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authorImre Kaloz <kaloz@openwrt.org>2010-02-22 13:54:47 +0000
committerImre Kaloz <kaloz@openwrt.org>2010-02-22 13:54:47 +0000
commita5937732322604af25c819b05a105fc795774810 (patch)
treedf0505a1957c1f94690754e03f5b62da46f89ff5 /target/linux/ubicom32/files/drivers
parent7f1e72587d32c93ebf85525113b8e742c8dc8cc4 (diff)
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mtk-20170518-a5937732322604af25c819b05a105fc795774810.tar.gz
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move new files out from platform support patch
SVN-Revision: 19815
Diffstat (limited to 'target/linux/ubicom32/files/drivers')
-rw-r--r--target/linux/ubicom32/files/drivers/char/hw_random/ubicom32-rng.c105
-rw-r--r--target/linux/ubicom32/files/drivers/mmc/host/ubicom32sd.c773
-rw-r--r--target/linux/ubicom32/files/drivers/mtd/devices/nand-spi-er.c1017
-rw-r--r--target/linux/ubicom32/files/drivers/mtd/devices/ubi32-m25p80.c1066
-rw-r--r--target/linux/ubicom32/files/drivers/mtd/devices/ubi32-nand-spi-er.c1188
-rw-r--r--target/linux/ubicom32/files/drivers/net/ubi32-eth.c760
-rw-r--r--target/linux/ubicom32/files/drivers/net/ubi32-eth.h132
-rw-r--r--target/linux/ubicom32/files/drivers/serial/ubi32_mailbox.c928
-rw-r--r--target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c817
-rw-r--r--target/linux/ubicom32/files/drivers/serial/ubi32_uarttio.c1172
-rw-r--r--target/linux/ubicom32/files/drivers/spi/spi_ubicom32_gpio.c267
-rw-r--r--target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c288
-rw-r--r--target/linux/ubicom32/files/drivers/usb/musb/ubi32_usb.c156
-rw-r--r--target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c399
-rw-r--r--target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c372
-rw-r--r--target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h546
-rw-r--r--target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c194
-rw-r--r--target/linux/ubicom32/files/drivers/video/ubicom32fb.c779
-rw-r--r--target/linux/ubicom32/files/drivers/video/ubicom32plio80.c780
-rw-r--r--target/linux/ubicom32/files/drivers/video/ubicom32vfb.c603
-rw-r--r--target/linux/ubicom32/files/drivers/watchdog/ubi32_wdt.c630
21 files changed, 12972 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/drivers/char/hw_random/ubicom32-rng.c b/target/linux/ubicom32/files/drivers/char/hw_random/ubicom32-rng.c
new file mode 100644
index 0000000..e429589
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/char/hw_random/ubicom32-rng.c
@@ -0,0 +1,105 @@
+/*
+ * drivers/net/ubi32-eth.c
+ * Ubicom32 hardware random number generator driver.
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/hw_random.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/ip5000.h>
+
+#define MODULE_NAME "ubicom32_rng"
+
+static int ubicom32_rng_data_present(struct hwrng *rng, int wait)
+{
+ int data, i;
+
+ for (i = 0; i < 20; i++) {
+ data = *(int *)(TIMER_BASE + TIMER_TRN);
+ if (data || !wait)
+ break;
+ udelay(10);
+ }
+ return data;
+}
+
+static int ubicom32_rng_data_read(struct hwrng *rng, u32 *data)
+{
+ *data = *(int *)(TIMER_BASE + TIMER_TRN);
+ return 4;
+}
+
+static int ubicom32_rng_init(struct hwrng *rng)
+{
+ printk(KERN_INFO "ubicom32 rng init\n");
+ *(int *)(TIMER_BASE + TIMER_TRN_CFG) = TIMER_TRN_CFG_ENABLE_OSC;
+ return 0;
+}
+
+static void ubicom32_rng_cleanup(struct hwrng *rng)
+{
+ printk(KERN_INFO "ubicom32 rng cleanup\n");
+ *(int *)(TIMER_BASE + TIMER_TRN_CFG) = 0;
+}
+
+static struct hwrng ubicom32_rng = {
+ .name = MODULE_NAME,
+ .init = ubicom32_rng_init,
+ .cleanup = ubicom32_rng_cleanup,
+ .data_present = ubicom32_rng_data_present,
+ .data_read = ubicom32_rng_data_read,
+ .priv = 0,
+};
+
+static int __init mod_init(void)
+{
+ int err;
+
+ printk(KERN_INFO "ubicom32 rng started\n");
+ err = hwrng_register(&ubicom32_rng);
+ if (err) {
+ printk(KERN_ERR "ubicom32 rng register failed (%d)\n",
+ err);
+ }
+
+ return err;
+}
+
+static void __exit mod_exit(void)
+{
+ printk(KERN_INFO "ubicom32 rng stopped\n");
+ hwrng_unregister(&ubicom32_rng);
+}
+
+module_init(mod_init);
+module_exit(mod_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ubicom, Inc.");
+MODULE_DESCRIPTION("H/W rng driver for ubicom32 processor");
+MODULE_VERSION("1:1.0.a");
diff --git a/target/linux/ubicom32/files/drivers/mmc/host/ubicom32sd.c b/target/linux/ubicom32/files/drivers/mmc/host/ubicom32sd.c
new file mode 100644
index 0000000..107c92a
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/mmc/host/ubicom32sd.c
@@ -0,0 +1,773 @@
+/*
+ * drivers/mmc/host/ubicom32sd.c
+ * Ubicom32 Secure Digital Host Controller Interface driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/scatterlist.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/mmc/host.h>
+
+#include <asm/ubicom32sd.h>
+
+#define DRIVER_NAME "ubicom32sd"
+
+#define sd_printk(...)
+//#define sd_printk printk
+
+#define SDTIO_VP_VERSION 3
+
+#define SDTIO_MAX_SG_BLOCKS 16
+
+enum sdtio_commands {
+ SDTIO_COMMAND_NOP,
+ SDTIO_COMMAND_SETUP,
+ SDTIO_COMMAND_SETUP_SDIO,
+ SDTIO_COMMAND_EXECUTE,
+ SDTIO_COMMAND_RESET,
+};
+
+#define SDTIO_COMMAND_SHIFT 24
+#define SDTIO_COMMAND_FLAG_STOP_RSP_CRC (1 << 10)
+#define SDTIO_COMMAND_FLAG_STOP_RSP_136 (1 << 9)
+#define SDTIO_COMMAND_FLAG_STOP_RSP (1 << 8)
+#define SDTIO_COMMAND_FLAG_STOP_CMD (1 << 7)
+#define SDTIO_COMMAND_FLAG_DATA_STREAM (1 << 6)
+#define SDTIO_COMMAND_FLAG_DATA_RD (1 << 5)
+#define SDTIO_COMMAND_FLAG_DATA_WR (1 << 4)
+#define SDTIO_COMMAND_FLAG_CMD_RSP_CRC (1 << 3)
+#define SDTIO_COMMAND_FLAG_CMD_RSP_136 (1 << 2)
+#define SDTIO_COMMAND_FLAG_CMD_RSP (1 << 1)
+#define SDTIO_COMMAND_FLAG_CMD (1 << 0)
+
+/*
+ * SDTIO_COMMAND_SETUP_SDIO
+ */
+#define SDTIO_COMMAND_FLAG_SDIO_INT_EN (1 << 0)
+
+/*
+ * SDTIO_COMMAND_SETUP
+ * clock speed in arg
+ */
+#define SDTIO_COMMAND_FLAG_4BIT (1 << 3)
+#define SDTIO_COMMAND_FLAG_1BIT (1 << 2)
+#define SDTIO_COMMAND_FLAG_SET_CLOCK (1 << 1)
+#define SDTIO_COMMAND_FLAG_SET_WIDTH (1 << 0)
+
+#define SDTIO_COMMAND_FLAG_CMD_RSP_MASK (SDTIO_COMMAND_FLAG_CMD_RSP | SDTIO_COMMAND_FLAG_CMD_RSP_136)
+#define SDTIO_COMMAND_FLAG_STOP_RSP_MASK (SDTIO_COMMAND_FLAG_STOP_RSP | SDTIO_COMMAND_FLAG_STOP_RSP_136)
+#define SDTIO_COMMAND_FLAG_RSP_MASK (SDTIO_COMMAND_FLAG_CMD_RSP_MASK | SDTIO_COMMAND_FLAG_STOP_RSP_MASK)
+
+struct sdtio_vp_sg {
+ volatile void *addr;
+ volatile u32_t len;
+};
+
+#define SDTIO_VP_INT_STATUS_DONE (1 << 31)
+#define SDTIO_VP_INT_STATUS_SDIO_INT (1 << 10)
+#define SDTIO_VP_INT_STATUS_DATA_CRC_ERR (1 << 9)
+#define SDTIO_VP_INT_STATUS_DATA_PROG_ERR (1 << 8)
+#define SDTIO_VP_INT_STATUS_DATA_TIMEOUT (1 << 7)
+#define SDTIO_VP_INT_STATUS_STOP_RSP_CRC (1 << 6)
+#define SDTIO_VP_INT_STATUS_STOP_RSP_TIMEOUT (1 << 5)
+#define SDTIO_VP_INT_STATUS_CMD_RSP_CRC (1 << 4)
+#define SDTIO_VP_INT_STATUS_CMD_RSP_TIMEOUT (1 << 3)
+#define SDTIO_VP_INT_STATUS_CMD_TIMEOUT (1 << 2)
+#define SDTIO_VP_INT_STATUS_CARD1_INSERT (1 << 1)
+#define SDTIO_VP_INT_STATUS_CARD0_INSERT (1 << 0)
+
+struct sdtio_vp_regs {
+ u32_t version;
+ u32_t f_max;
+ u32_t f_min;
+
+ volatile u32_t int_status;
+
+ volatile u32_t command;
+ volatile u32_t arg;
+
+ volatile u32_t cmd_opcode;
+ volatile u32_t cmd_arg;
+ volatile u32_t cmd_rsp0;
+ volatile u32_t cmd_rsp1;
+ volatile u32_t cmd_rsp2;
+ volatile u32_t cmd_rsp3;
+
+ volatile u32_t stop_opcode;
+ volatile u32_t stop_arg;
+ volatile u32_t stop_rsp0;
+ volatile u32_t stop_rsp1;
+ volatile u32_t stop_rsp2;
+ volatile u32_t stop_rsp3;
+
+ volatile u32_t data_timeout_ns;
+ volatile u16_t data_blksz;
+ volatile u16_t data_blkct;
+ volatile u32_t data_bytes_transferred;
+ volatile u32_t sg_len;
+ struct sdtio_vp_sg sg[SDTIO_MAX_SG_BLOCKS];
+};
+
+struct ubicom32sd_data {
+ const struct ubicom32sd_platform_data *pdata;
+
+ struct mmc_host *mmc;
+
+ /*
+ * Lock used to protect the data structure
+ spinlock_t lock;
+ */
+ int int_en;
+ int int_pend;
+
+ /*
+ * Receive and transmit interrupts used for communicating
+ * with hardware
+ */
+ int irq_tx;
+ int irq_rx;
+
+ /*
+ * Current outstanding mmc request
+ */
+ struct mmc_request *mrq;
+
+ /*
+ * Hardware registers
+ */
+ struct sdtio_vp_regs *regs;
+};
+
+/*****************************************************************************\
+ * *
+ * Suspend/resume *
+ * *
+\*****************************************************************************/
+
+#if 0//def CONFIG_PM
+
+int ubicom32sd_suspend_host(struct ubicom32sd_host *host, pm_message_t state)
+{
+ int ret;
+
+ ret = mmc_suspend_host(host->mmc, state);
+ if (ret)
+ return ret;
+
+ free_irq(host->irq, host);
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(ubicom32sd_suspend_host);
+
+int ubicom32sd_resume_host(struct ubicom32sd_host *host)
+{
+ int ret;
+
+ if (host->flags & UBICOM32SD_USE_DMA) {
+ if (host->ops->enable_dma)
+ host->ops->enable_dma(host);
+ }
+
+ ret = request_irq(host->irq, ubicom32sd_irq, IRQF_SHARED,
+ mmc_hostname(host->mmc), host);
+ if (ret)
+ return ret;
+
+ ubicom32sd_init(host);
+ mmiowb();
+
+ ret = mmc_resume_host(host->mmc);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(ubicom32sd_resume_host);
+
+#endif /* CONFIG_PM */
+
+/*
+ * ubicom32sd_send_command_sync
+ */
+static void ubicom32sd_send_command_sync(struct ubicom32sd_data *ud, u32_t command, u32_t arg)
+{
+ ud->regs->command = command;
+ ud->regs->arg = arg;
+ ubicom32_set_interrupt(ud->irq_tx);
+ while (ud->regs->command) {
+ ndelay(100);
+ }
+}
+
+/*
+ * ubicom32sd_send_command
+ */
+static void ubicom32sd_send_command(struct ubicom32sd_data *ud, u32_t command, u32_t arg)
+{
+ ud->regs->command = command;
+ ud->regs->arg = arg;
+ ubicom32_set_interrupt(ud->irq_tx);
+}
+
+/*
+ * ubicom32sd_reset
+ */
+static void ubicom32sd_reset(struct ubicom32sd_data *ud)
+{
+ ubicom32sd_send_command_sync(ud, SDTIO_COMMAND_RESET << SDTIO_COMMAND_SHIFT, 0);
+ ud->regs->int_status = 0;
+}
+
+/*
+ * ubicom32sd_mmc_request
+ */
+static void ubicom32sd_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct ubicom32sd_data *ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+ u32_t command = SDTIO_COMMAND_EXECUTE << SDTIO_COMMAND_SHIFT;
+ int ret = 0;
+
+ WARN(ud->mrq != NULL, "ud->mrq still set to %p\n", ud->mrq);
+ //pr_debug("send cmd %08x arg %08x flags %08x\n", cmd->opcode, cmd->arg, cmd->flags);
+
+ if (mrq->cmd) {
+ struct mmc_command *cmd = mrq->cmd;
+
+ sd_printk("%s:\t\t\tsetup cmd %02d arg %08x flags %08x\n", mmc_hostname(mmc), cmd->opcode, cmd->arg, cmd->flags);
+
+ ud->regs->cmd_opcode = cmd->opcode;
+ ud->regs->cmd_arg = cmd->arg;
+
+ command |= SDTIO_COMMAND_FLAG_CMD;
+
+ if (cmd->flags & MMC_RSP_PRESENT) {
+ command |= SDTIO_COMMAND_FLAG_CMD_RSP;
+ }
+
+ if (cmd->flags & MMC_RSP_136) {
+ command |= SDTIO_COMMAND_FLAG_CMD_RSP_136;
+ }
+
+ if (cmd->flags & MMC_RSP_CRC) {
+ command |= SDTIO_COMMAND_FLAG_CMD_RSP_CRC;
+ }
+ }
+
+ if (mrq->data) {
+ struct mmc_data *data = mrq->data;
+ struct scatterlist *sg = data->sg;
+ int i;
+
+printk("%s:\t\t\tsetup data blksz %d num %d sglen=%d fl=%08x Tns=%u\n", mmc_hostname(mmc), data->blksz, data->blocks, data->sg_len, data->flags, data->timeout_ns);
+
+ sd_printk("%s:\t\t\tsetup data blksz %d num %d sglen=%d fl=%08x Tns=%u\n",
+ mmc_hostname(mmc), data->blksz, data->blocks, data->sg_len,
+ data->flags, data->timeout_ns);
+
+ if (data->sg_len > SDTIO_MAX_SG_BLOCKS) {
+ ret = -EINVAL;
+ data->error = -EINVAL;
+ goto fail;
+ }
+
+ ud->regs->data_timeout_ns = data->timeout_ns;
+ ud->regs->data_blksz = data->blksz;
+ ud->regs->data_blkct = data->blocks;
+ ud->regs->sg_len = data->sg_len;
+
+ /*
+ * Load all of our sg list into the driver sg buffer
+ */
+ for (i = 0; i < data->sg_len; i++) {
+ sd_printk("%s: sg %d = %p %d\n", mmc_hostname(mmc), i, sg_virt(sg), sg->length);
+ ud->regs->sg[i].addr = sg_virt(sg);
+ ud->regs->sg[i].len = sg->length;
+ if (((u32_t)ud->regs->sg[i].addr & 0x03) || (sg->length & 0x03)) {
+ sd_printk("%s: Need aligned buffers\n", mmc_hostname(mmc));
+ ret = -EINVAL;
+ data->error = -EINVAL;
+ goto fail;
+ }
+ sg++;
+ }
+ if (data->flags & MMC_DATA_READ) {
+ command |= SDTIO_COMMAND_FLAG_DATA_RD;
+ } else if (data->flags & MMC_DATA_WRITE) {
+ command |= SDTIO_COMMAND_FLAG_DATA_WR;
+ } else if (data->flags & MMC_DATA_STREAM) {
+ command |= SDTIO_COMMAND_FLAG_DATA_STREAM;
+ }
+ }
+
+ if (mrq->stop) {
+ struct mmc_command *stop = mrq->stop;
+ sd_printk("%s: \t\t\tsetup stop %02d arg %08x flags %08x\n", mmc_hostname(mmc), stop->opcode, stop->arg, stop->flags);
+
+ ud->regs->stop_opcode = stop->opcode;
+ ud->regs->stop_arg = stop->arg;
+
+ command |= SDTIO_COMMAND_FLAG_STOP_CMD;
+
+ if (stop->flags & MMC_RSP_PRESENT) {
+ command |= SDTIO_COMMAND_FLAG_STOP_RSP;
+ }
+
+ if (stop->flags & MMC_RSP_136) {
+ command |= SDTIO_COMMAND_FLAG_STOP_RSP_136;
+ }
+
+ if (stop->flags & MMC_RSP_CRC) {
+ command |= SDTIO_COMMAND_FLAG_STOP_RSP_CRC;
+ }
+ }
+
+ ud->mrq = mrq;
+
+ sd_printk("%s: Sending command %08x\n", mmc_hostname(mmc), command);
+
+ ubicom32sd_send_command(ud, command, 0);
+
+ return;
+fail:
+ sd_printk("%s: mmcreq ret = %d\n", mmc_hostname(mmc), ret);
+ mrq->cmd->error = ret;
+ mmc_request_done(mmc, mrq);
+}
+
+/*
+ * ubicom32sd_mmc_set_ios
+ */
+static void ubicom32sd_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct ubicom32sd_data *ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+ u32_t command = SDTIO_COMMAND_SETUP << SDTIO_COMMAND_SHIFT;
+ u32_t arg = 0;
+ sd_printk("%s: ios call bw:%u pm:%u clk:%u\n", mmc_hostname(mmc), 1 << ios->bus_width, ios->power_mode, ios->clock);
+
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_1:
+ command |= SDTIO_COMMAND_FLAG_SET_WIDTH | SDTIO_COMMAND_FLAG_1BIT;
+ break;
+
+ case MMC_BUS_WIDTH_4:
+ command |= SDTIO_COMMAND_FLAG_SET_WIDTH | SDTIO_COMMAND_FLAG_4BIT;
+ break;
+ }
+
+ if (ios->clock) {
+ arg = ios->clock;
+ command |= SDTIO_COMMAND_FLAG_SET_CLOCK;
+ }
+
+ switch (ios->power_mode) {
+
+ /*
+ * Turn off the SD bus (power + clock)
+ */
+ case MMC_POWER_OFF:
+ gpio_set_value(ud->pdata->cards[0].pin_pwr, !ud->pdata->cards[0].pwr_polarity);
+ command |= SDTIO_COMMAND_FLAG_SET_CLOCK;
+ break;
+
+ /*
+ * Turn on the power to the SD bus
+ */
+ case MMC_POWER_ON:
+ gpio_set_value(ud->pdata->cards[0].pin_pwr, ud->pdata->cards[0].pwr_polarity);
+ break;
+
+ /*
+ * Turn on the clock to the SD bus
+ */
+ case MMC_POWER_UP:
+ /*
+ * Done above
+ */
+ break;
+ }
+
+ ubicom32sd_send_command_sync(ud, command, arg);
+
+ /*
+ * Let the power settle down
+ */
+ udelay(500);
+}
+
+/*
+ * ubicom32sd_mmc_get_cd
+ */
+static int ubicom32sd_mmc_get_cd(struct mmc_host *mmc)
+{
+ struct ubicom32sd_data *ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+ sd_printk("%s: get cd %u %u\n", mmc_hostname(mmc), ud->pdata->cards[0].pin_cd, gpio_get_value(ud->pdata->cards[0].pin_cd));
+
+ return gpio_get_value(ud->pdata->cards[0].pin_cd) ?
+ ud->pdata->cards[0].cd_polarity :
+ !ud->pdata->cards[0].cd_polarity;
+}
+
+/*
+ * ubicom32sd_mmc_get_ro
+ */
+static int ubicom32sd_mmc_get_ro(struct mmc_host *mmc)
+{
+ struct ubicom32sd_data *ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+ sd_printk("%s: get ro %u %u\n", mmc_hostname(mmc), ud->pdata->cards[0].pin_wp, gpio_get_value(ud->pdata->cards[0].pin_wp));
+
+ return gpio_get_value(ud->pdata->cards[0].pin_wp) ?
+ ud->pdata->cards[0].wp_polarity :
+ !ud->pdata->cards[0].wp_polarity;
+}
+
+/*
+ * ubicom32sd_mmc_enable_sdio_irq
+ */
+static void ubicom32sd_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+ struct ubicom32sd_data *ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+
+ ud->int_en = enable;
+ if (enable && ud->int_pend) {
+ ud->int_pend = 0;
+ mmc_signal_sdio_irq(mmc);
+ }
+}
+
+/*
+ * ubicom32sd_interrupt
+ */
+static irqreturn_t ubicom32sd_interrupt(int irq, void *dev)
+{
+ struct mmc_host *mmc = (struct mmc_host *)dev;
+ struct mmc_request *mrq;
+ struct ubicom32sd_data *ud;
+ u32_t int_status;
+
+ if (!mmc) {
+ return IRQ_HANDLED;
+ }
+
+ ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+ if (!ud) {
+ return IRQ_HANDLED;
+ }
+
+ int_status = ud->regs->int_status;
+ ud->regs->int_status &= ~int_status;
+
+ if (int_status & SDTIO_VP_INT_STATUS_SDIO_INT) {
+ if (ud->int_en) {
+ ud->int_pend = 0;
+ mmc_signal_sdio_irq(mmc);
+ } else {
+ ud->int_pend++;
+ }
+ }
+
+ if (!(int_status & SDTIO_VP_INT_STATUS_DONE)) {
+ return IRQ_HANDLED;
+ }
+
+ mrq = ud->mrq;
+ if (!mrq) {
+ sd_printk("%s: Spurious interrupt", mmc_hostname(mmc));
+ return IRQ_HANDLED;
+ }
+ ud->mrq = NULL;
+
+ /*
+ * SDTIO_VP_INT_DONE
+ */
+ if (mrq->cmd->flags & MMC_RSP_PRESENT) {
+ struct mmc_command *cmd = mrq->cmd;
+ cmd->error = 0;
+
+ if ((cmd->flags & MMC_RSP_CRC) && (int_status & SDTIO_VP_INT_STATUS_CMD_RSP_CRC)) {
+ cmd->error = -EILSEQ;
+ } else if (int_status & SDTIO_VP_INT_STATUS_CMD_RSP_TIMEOUT) {
+ cmd->error = -ETIMEDOUT;
+ goto done;
+ } else if (cmd->flags & MMC_RSP_136) {
+ cmd->resp[0] = ud->regs->cmd_rsp0;
+ cmd->resp[1] = ud->regs->cmd_rsp1;
+ cmd->resp[2] = ud->regs->cmd_rsp2;
+ cmd->resp[3] = ud->regs->cmd_rsp3;
+ } else {
+ cmd->resp[0] = ud->regs->cmd_rsp0;
+ }
+ sd_printk("%s:\t\t\tResponse %08x %08x %08x %08x err=%d\n", mmc_hostname(mmc), cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3], cmd->error);
+ }
+
+ if (mrq->data) {
+ struct mmc_data *data = mrq->data;
+
+ if (int_status & SDTIO_VP_INT_STATUS_DATA_TIMEOUT) {
+ data->error = -ETIMEDOUT;
+ sd_printk("%s:\t\t\tData Timeout\n", mmc_hostname(mmc));
+ goto done;
+ } else if (int_status & SDTIO_VP_INT_STATUS_DATA_CRC_ERR) {
+ data->error = -EILSEQ;
+ sd_printk("%s:\t\t\tData CRC\n", mmc_hostname(mmc));
+ goto done;
+ } else if (int_status & SDTIO_VP_INT_STATUS_DATA_PROG_ERR) {
+ data->error = -EILSEQ;
+ sd_printk("%s:\t\t\tData Program Error\n", mmc_hostname(mmc));
+ goto done;
+ } else {
+ data->error = 0;
+ data->bytes_xfered = ud->regs->data_bytes_transferred;
+ }
+ }
+
+ if (mrq->stop && (mrq->stop->flags & MMC_RSP_PRESENT)) {
+ struct mmc_command *stop = mrq->stop;
+ stop->error = 0;
+
+ if ((stop->flags & MMC_RSP_CRC) && (int_status & SDTIO_VP_INT_STATUS_STOP_RSP_CRC)) {
+ stop->error = -EILSEQ;
+ } else if (int_status & SDTIO_VP_INT_STATUS_STOP_RSP_TIMEOUT) {
+ stop->error = -ETIMEDOUT;
+ goto done;
+ } else if (stop->flags & MMC_RSP_136) {
+ stop->resp[0] = ud->regs->stop_rsp0;
+ stop->resp[1] = ud->regs->stop_rsp1;
+ stop->resp[2] = ud->regs->stop_rsp2;
+ stop->resp[3] = ud->regs->stop_rsp3;
+ } else {
+ stop->resp[0] = ud->regs->stop_rsp0;
+ }
+ sd_printk("%s:\t\t\tStop Response %08x %08x %08x %08x err=%d\n", mmc_hostname(mmc), stop->resp[0], stop->resp[1], stop->resp[2], stop->resp[3], stop->error);
+ }
+
+done:
+ mmc_request_done(mmc, mrq);
+
+ return IRQ_HANDLED;
+}
+
+static struct mmc_host_ops ubicom32sd_ops = {
+ .request = ubicom32sd_mmc_request,
+ .set_ios = ubicom32sd_mmc_set_ios,
+ .get_ro = ubicom32sd_mmc_get_ro,
+ .get_cd = ubicom32sd_mmc_get_cd,
+ .enable_sdio_irq = ubicom32sd_mmc_enable_sdio_irq,
+};
+
+/*
+ * ubicom32sd_probe
+ */
+static int __devinit ubicom32sd_probe(struct platform_device *pdev)
+{
+ struct ubicom32sd_platform_data *pdata = (struct ubicom32sd_platform_data *)pdev->dev.platform_data;
+ struct mmc_host *mmc;
+ struct ubicom32sd_data *ud;
+ struct resource *res_regs;
+ struct resource *res_irq_tx;
+ struct resource *res_irq_rx;
+ int ret;
+
+ /*
+ * Get our resources, regs is the hardware driver base address
+ * and the tx and rx irqs are used to communicate with the
+ * hardware driver.
+ */
+ res_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ res_irq_tx = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ res_irq_rx = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+ if (!res_regs || !res_irq_tx || !res_irq_rx) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /*
+ * Reserve any gpios we need
+ */
+ ret = gpio_request(pdata->cards[0].pin_wp, "sd-wp");
+ if (ret) {
+ goto fail;
+ }
+ gpio_direction_input(pdata->cards[0].pin_wp);
+
+ ret = gpio_request(pdata->cards[0].pin_cd, "sd-cd");
+ if (ret) {
+ goto fail_cd;
+ }
+ gpio_direction_input(pdata->cards[0].pin_cd);
+
+ /*
+ * HACK: for the dual port controller on port F, we don't support the second port right now
+ */
+ if (pdata->ncards > 1) {
+ ret = gpio_request(pdata->cards[1].pin_pwr, "sd-pwr");
+ gpio_direction_output(pdata->cards[1].pin_pwr, !pdata->cards[1].pwr_polarity);
+ gpio_direction_output(pdata->cards[1].pin_pwr, pdata->cards[1].pwr_polarity);
+ }
+
+ ret = gpio_request(pdata->cards[0].pin_pwr, "sd-pwr");
+ if (ret) {
+ goto fail_pwr;
+ }
+ gpio_direction_output(pdata->cards[0].pin_pwr, !pdata->cards[0].pwr_polarity);
+
+ /*
+ * Allocate the MMC driver, it includes memory for our data.
+ */
+ mmc = mmc_alloc_host(sizeof(struct ubicom32sd_data), &pdev->dev);
+ if (!mmc) {
+ ret = -ENOMEM;
+ goto fail_mmc;
+ }
+ ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+ ud->mmc = mmc;
+ ud->pdata = pdata;
+ ud->regs = (struct sdtio_vp_regs *)res_regs->start;
+ ud->irq_tx = res_irq_tx->start;
+ ud->irq_rx = res_irq_rx->start;
+ platform_set_drvdata(pdev, mmc);
+
+ ret = request_irq(ud->irq_rx, ubicom32sd_interrupt, IRQF_DISABLED, mmc_hostname(mmc), mmc);
+ if (ret) {
+ goto fail_mmc;
+ }
+
+ /*
+ * Fill in the mmc structure
+ */
+ mmc->ops = &ubicom32sd_ops;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_NEEDS_POLL | MMC_CAP_SDIO_IRQ |
+ MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
+
+ mmc->f_min = ud->regs->f_min;
+ mmc->f_max = ud->regs->f_max;
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+ /*
+ * Setup some restrictions on transfers
+ *
+ * We allow up to SDTIO_MAX_SG_BLOCKS of data to DMA into, there are
+ * not really any "max_seg_size", "max_req_size", or "max_blk_count"
+ * restrictions (must be less than U32_MAX though), pick
+ * something large?!...
+ *
+ * The hardware can do up to 4095 bytes per block, since the spec
+ * only requires 2048, we'll set it to that and not worry about
+ * potential weird blk lengths.
+ */
+ mmc->max_hw_segs = SDTIO_MAX_SG_BLOCKS;
+ mmc->max_phys_segs = SDTIO_MAX_SG_BLOCKS;
+ mmc->max_seg_size = 1024 * 1024;
+ mmc->max_req_size = 1024 * 1024;
+ mmc->max_blk_count = 1024;
+
+ mmc->max_blk_size = 2048;
+
+ ubicom32sd_reset(ud);
+
+ /*
+ * enable interrupts
+ */
+ ud->int_en = 0;
+ ubicom32sd_send_command_sync(ud, SDTIO_COMMAND_SETUP_SDIO << SDTIO_COMMAND_SHIFT | SDTIO_COMMAND_FLAG_SDIO_INT_EN, 0);
+
+ mmc_add_host(mmc);
+
+ printk(KERN_INFO "%s at %p, irq %d/%d\n", mmc_hostname(mmc),
+ ud->regs, ud->irq_tx, ud->irq_rx);
+ return 0;
+
+fail_mmc:
+ gpio_free(pdata->cards[0].pin_pwr);
+fail_pwr:
+ gpio_free(pdata->cards[0].pin_cd);
+fail_cd:
+ gpio_free(pdata->cards[0].pin_wp);
+fail:
+ return ret;
+}
+
+/*
+ * ubicom32sd_remove
+ */
+static int __devexit ubicom32sd_remove(struct platform_device *pdev)
+{
+ struct mmc_host *mmc = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (mmc) {
+ struct ubicom32sd_data *ud = (struct ubicom32sd_data *)mmc_priv(mmc);
+
+ gpio_free(ud->pdata->cards[0].pin_pwr);
+ gpio_free(ud->pdata->cards[0].pin_cd);
+ gpio_free(ud->pdata->cards[0].pin_wp);
+
+ mmc_remove_host(mmc);
+ mmc_free_host(mmc);
+ }
+
+ /*
+ * Note that our data is allocated as part of the mmc structure
+ * so we don't need to free it.
+ */
+ return 0;
+}
+
+static struct platform_driver ubicom32sd_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ubicom32sd_probe,
+ .remove = __devexit_p(ubicom32sd_remove),
+#if 0
+ .suspend = ubicom32sd_suspend,
+ .resume = ubicom32sd_resume,
+#endif
+};
+
+/*
+ * ubicom32sd_init
+ */
+static int __init ubicom32sd_init(void)
+{
+ return platform_driver_register(&ubicom32sd_driver);
+}
+module_init(ubicom32sd_init);
+
+/*
+ * ubicom32sd_exit
+ */
+static void __exit ubicom32sd_exit(void)
+{
+ platform_driver_unregister(&ubicom32sd_driver);
+}
+module_exit(ubicom32sd_exit);
+
+MODULE_AUTHOR("Patrick Tjin");
+MODULE_DESCRIPTION("Ubicom32 Secure Digital Host Controller Interface driver");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/ubicom32/files/drivers/mtd/devices/nand-spi-er.c b/target/linux/ubicom32/files/drivers/mtd/devices/nand-spi-er.c
new file mode 100644
index 0000000..73938c8
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/mtd/devices/nand-spi-er.c
@@ -0,0 +1,1017 @@
+/*
+ * Micron SPI-ER NAND Flash Memory
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+*/
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#define NAND_SPI_ER_BLOCK_FROM_ROW(row) (row >> 6)
+
+#define NAND_SPI_ER_STATUS_P_FAIL (1 << 3)
+#define NAND_SPI_ER_STATUS_E_FAIL (1 << 2)
+#define NAND_SPI_ER_STATUS_OIP (1 << 0)
+
+#define NAND_SPI_ER_LAST_ROW_INVALID 0xFFFFFFFF
+#define NAND_SPI_ER_BAD_BLOCK_MARK_OFFSET 0x08
+
+struct nand_spi_er_device {
+ const char *name;
+
+ uint8_t id0;
+ uint8_t id1;
+
+ unsigned int blocks;
+ unsigned int pages_per_block;
+ unsigned int page_size;
+ unsigned int write_size;
+ unsigned int erase_size;
+};
+
+struct nand_spi_er {
+ char name[24];
+
+ const struct nand_spi_er_device *device;
+
+ struct mutex lock;
+ struct spi_device *spi;
+
+ struct mtd_info mtd;
+
+ unsigned int last_row; /* the last row we fetched */
+
+ /*
+ * Bad block table (MUST be last in strcuture)
+ */
+ unsigned long nbb;
+ unsigned long bbt[0];
+};
+
+const struct nand_spi_er_device nand_spi_er_devices[] = {
+ {
+ name: "MT29F1G01ZDC",
+ id0: 0x2C,
+ id1: 0x12,
+ blocks: 1024,
+ pages_per_block: 64,
+ page_size: 2048,
+ write_size: 512,
+ erase_size: 64 * 2048,
+ },
+ {
+ name: "MT29F1G01ZDC",
+ id0: 0x2C,
+ id1: 0x13,
+ blocks: 1024,
+ pages_per_block: 64,
+ page_size: 2048,
+ write_size: 512,
+ erase_size: 64 * 2048,
+ },
+};
+
+static int read_only = 0;
+module_param(read_only, int, 0);
+MODULE_PARM_DESC(read_only, "Leave device locked");
+
+/*
+ * nand_spi_er_get_feature
+ * Get Feature register
+ */
+static int nand_spi_er_get_feature(struct nand_spi_er *chip, int reg, uint8_t *data)
+{
+ uint8_t txbuf[2];
+ uint8_t rxbuf[1];
+ int res;
+
+ txbuf[0] = 0x0F;
+ txbuf[1] = reg;
+ res = spi_write_then_read(chip->spi, txbuf, 2, rxbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed get feature res=%d\n", chip->name, res);
+ return res;
+ }
+ *data = rxbuf[0];
+ return 0;
+}
+
+/*
+ * nand_spi_er_busywait
+ * Wait until the chip is not busy
+ */
+static int nand_spi_er_busywait(struct nand_spi_er *chip, uint8_t *data)
+{
+ int i;
+
+ for (i = 0; i < 100; i++) {
+ int res = nand_spi_er_get_feature(chip, 0xC0, data);
+ if (res) {
+ return res;
+ }
+ if (!(*data & NAND_SPI_ER_STATUS_OIP)) {
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * nand_spi_er_erase
+ * Erase a block, parameters must be block aligned
+ */
+static int nand_spi_er_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+ struct nand_spi_er *chip = mtd->priv;
+ struct spi_device *spi = chip->spi;
+ uint8_t txbuf[4];
+ int res;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: erase addr:%x len:%x\n", chip->name, instr->addr, instr->len);
+
+ if ((instr->addr + instr->len) > mtd->size) {
+ return -EINVAL;
+ }
+
+ if (instr->addr & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: erase address is not aligned %x\n", chip->name, instr->addr);
+ return -EINVAL;
+ }
+
+ if (instr->len & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: erase len is not aligned %x\n", chip->name, instr->len);
+ return -EINVAL;
+ }
+
+ mutex_lock(&chip->lock);
+ chip->last_row = NAND_SPI_ER_LAST_ROW_INVALID;
+
+ while (instr->len) {
+ uint32_t block = instr->addr >> 17;
+ uint32_t row = block << 6;
+ uint8_t stat;
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: block erase row:%x block:%x addr:%x rem:%x\n", chip->name, row, block, instr->addr, instr->len);
+
+ /*
+ * Write enable
+ */
+ txbuf[0] = 0x06;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write enable res=%d\n", chip->name, res);
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+
+ /*
+ * Test for bad block
+ */
+ if (test_bit(block, chip->bbt)) {
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ res = -EBADMSG;
+ goto done;
+ }
+
+ /*
+ * Block erase
+ */
+ txbuf[0] = 0xD8;
+ txbuf[1] = 0x00;
+ txbuf[2] = row >> 8;
+ txbuf[3] = row & 0xFF;
+ res = spi_write(spi, txbuf, 4);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed block erase res=%d\n", chip->name, res);
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ goto done;
+ }
+
+ /*
+ * Wait
+ */
+ res = nand_spi_er_busywait(chip, &stat);
+ if (res || (stat & NAND_SPI_ER_STATUS_OIP)) {
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive res=%d stat=%02x\n", chip->name, res, stat);
+ if (res) {
+ goto done;
+ }
+
+ /*
+ * Chip is stuck?
+ */
+ res = -EIO;
+ goto done;
+ }
+
+ /*
+ * Check the status register
+ */
+ if (stat & NAND_SPI_ER_STATUS_E_FAIL) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: E_FAIL signalled (%02x)\n", chip->name, stat);
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ goto done;
+ }
+
+ /*
+ * Next
+ */
+ block++;
+ instr->len -= chip->device->erase_size;
+ instr->addr += chip->device->erase_size;
+ }
+
+ instr->state = MTD_ERASE_DONE;
+
+ mutex_unlock(&chip->lock);
+ return 0;
+
+done:
+ /*
+ * Write disable
+ */
+ txbuf[0] = 0x04;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write disable res=%d\n", chip->name, res);
+ }
+
+ mutex_unlock(&chip->lock);
+
+ mtd_erase_callback(instr);
+ return 0;
+}
+
+/*
+ * nand_spi_er_read
+ *
+ * return -EUCLEAN: ecc error recovered
+ * return -EBADMSG: ecc error not recovered
+*/
+static int nand_spi_er_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf)
+{
+ struct nand_spi_er *chip = mtd->priv;
+ struct spi_device *spi = chip->spi;
+
+ uint32_t row;
+ uint32_t column;
+ int retval = 0;
+
+ *retlen = 0;
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: read block from %llx len %d into %p\n", chip->name, from, len, buf);
+
+ /*
+ * Zero length reads, nothing to do
+ */
+ if (len == 0) {
+ return 0;
+ }
+
+ /*
+ * Reject reads which go over the end of the flash
+ */
+ if ((from + len) > mtd->size) {
+ return -EINVAL;
+ }
+
+ /*
+ * Get the row and column address to start at
+ */
+ row = from >> 11;
+ column = from & 0x7FF;
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: row=%x %d column=%x %d last_row=%x %d\n", chip->name, row, row, column, column, chip->last_row, chip->last_row);
+
+ /*
+ * Read the data from the chip
+ */
+ mutex_lock(&chip->lock);
+ while (len) {
+ uint8_t stat;
+ uint8_t txbuf[4];
+ struct spi_message message;
+ struct spi_transfer x[2];
+ int res;
+ size_t toread;
+
+ /*
+ * Figure out how much to read
+ *
+ * If we are reading from the middle of a page then the most we
+ * can read is to the end of the page
+ */
+ toread = len;
+ if (toread > (chip->device->page_size - column)) {
+ toread = chip->device->page_size - column;
+ }
+
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: buf=%p toread=%x row=%x column=%x last_row=%x\n", chip->name, buf, toread, row, column, chip->last_row);
+
+ if (chip->last_row != row) {
+ /*
+ * Check if the block is bad
+ */
+ if (test_bit(NAND_SPI_ER_BLOCK_FROM_ROW(row), chip->bbt)) {
+ mutex_unlock(&chip->lock);
+ return -EBADMSG;
+ }
+
+ /*
+ * Load the appropriate page
+ */
+ txbuf[0] = 0x13;
+ txbuf[1] = 0x00;
+ txbuf[2] = row >> 8;
+ txbuf[3] = row & 0xFF;
+ res = spi_write(spi, txbuf, 4);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed page load res=%d\n", chip->name, res);
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+
+ /*
+ * Wait
+ */
+ res = nand_spi_er_busywait(chip, &stat);
+ if (res || (stat & NAND_SPI_ER_STATUS_OIP)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive res=%d stat=%02x\n", chip->name, res, stat);
+ if (res) {
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+
+ /*
+ * Chip is stuck?
+ */
+ mutex_unlock(&chip->lock);
+ return -EIO;
+ }
+
+ /*
+ * Check the ECC bits
+ */
+ stat >>= 4;
+ if (stat == 1) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: ECC recovered, row=%x\n", chip->name, row);
+ retval = -EUCLEAN;
+ }
+ if (stat == 2) {
+ DEBUG(MTD_DEBUG_LEVEL0, "%s: failed ECC, row=%x\n", chip->name, row);
+ chip->last_row = NAND_SPI_ER_LAST_ROW_INVALID;
+ mutex_unlock(&chip->lock);
+ return -EBADMSG;
+ }
+
+ }
+
+ chip->last_row = row;
+
+ /*
+ * Read out the data
+ */
+ spi_message_init(&message);
+ memset(x, 0, sizeof(x));
+
+ txbuf[0] = 0x03;
+ txbuf[1] = column >> 8;
+ txbuf[2] = column & 0xFF;
+ txbuf[3] = 0;
+ x[0].tx_buf = txbuf;
+ x[0].len = 4;
+ spi_message_add_tail(&x[0], &message);
+
+ x[1].rx_buf = buf;
+ x[1].len = toread;
+ spi_message_add_tail(&x[1], &message);
+
+ res = spi_sync(spi, &message);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed data read res=%d\n", chip->name, res);
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+ buf += toread;
+ len -= toread;
+ *retlen += toread;
+
+ /*
+ * For the next page, increment the row and always start at column 0
+ */
+ column = 0;
+ row++;
+ }
+
+ mutex_unlock(&chip->lock);
+ return retval;
+}
+
+/*
+ * nand_spi_er_write
+ */
+#define NOT_ALIGNED(x) ((x & (device->write_size - 1)) != 0)
+static int nand_spi_er_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf)
+{
+ struct nand_spi_er *chip = mtd->priv;
+ struct spi_device *spi = chip->spi;
+ const struct nand_spi_er_device *device = chip->device;
+ uint32_t row;
+ uint32_t col;
+ uint8_t txbuf[4];
+ int res;
+ size_t towrite;
+
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: write block to %llx len %d from %p\n", chip->name, to, len, buf);
+
+ *retlen = 0;
+
+ /*
+ * nothing to write
+ */
+ if (!len) {
+ return 0;
+ }
+
+ /*
+ * Reject writes which go over the end of the flash
+ */
+ if ((to + len) > mtd->size) {
+ return -EINVAL;
+ }
+
+ /*
+ * Check to see if everything is page aligned
+ */
+ if (NOT_ALIGNED(to) || NOT_ALIGNED(len)) {
+ printk(KERN_NOTICE "nand_spi_er_write: Attempt to write non page aligned data\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&chip->lock);
+ chip->last_row = NAND_SPI_ER_LAST_ROW_INVALID;
+
+ /*
+ * If the first write is a partial write then write at most the number of
+ * bytes to get us page aligned and then the remainder will be
+ * page aligned. The last bit may be a partial page as well.
+ */
+ col = to & (device->page_size - 1);
+ towrite = device->page_size - col;
+ if (towrite > len) {
+ towrite = len;
+ }
+
+ /*
+ * Write the data
+ */
+ row = to >> 11;
+ while (len) {
+ struct spi_message message;
+ struct spi_transfer x[2];
+ uint8_t stat;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: write %p to row:%x col:%x len:%x rem:%x\n", chip->name, buf, row, col, towrite, len);
+
+ /*
+ * Write enable
+ */
+ txbuf[0] = 0x06;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write enable res=%d\n", chip->name, res);
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+
+ /*
+ * Write the data into the cache
+ */
+ spi_message_init(&message);
+ memset(x, 0, sizeof(x));
+ txbuf[0] = 0x02;
+ txbuf[1] = col >> 8;
+ txbuf[2] = col & 0xFF;
+ x[0].tx_buf = txbuf;
+ x[0].len = 3;
+ spi_message_add_tail(&x[0], &message);
+ x[1].tx_buf = buf;
+ x[1].len = towrite;
+ spi_message_add_tail(&x[1], &message);
+ res = spi_sync(spi, &message);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed cache write res=%d\n", chip->name, res);
+ goto done;
+ }
+
+ /*
+ * Program execute
+ */
+ txbuf[0] = 0x10;
+ txbuf[1] = 0x00;
+ txbuf[2] = row >> 8;
+ txbuf[3] = row & 0xFF;
+ res = spi_write(spi, txbuf, 4);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed prog execute res=%d\n", chip->name, res);
+ goto done;
+ }
+
+ /*
+ * Wait
+ */
+ res = nand_spi_er_busywait(chip, &stat);
+ if (res || (stat & NAND_SPI_ER_STATUS_OIP)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive res=%d stat=%02x\n", chip->name, res, stat);
+ if (res) {
+ goto done;
+ }
+
+ /*
+ * Chip is stuck?
+ */
+ res = -EIO;
+ goto done;
+ }
+
+ if (stat & (1 << 3)) {
+ res = -EBADMSG;
+ goto done;
+ }
+
+ row++;
+ buf += towrite;
+ len -= towrite;
+ *retlen += towrite;
+
+ /*
+ * At this point, we are always page aligned so start at column 0.
+ * Note we may not have a full page to write at the end, hence the
+ * check if towrite > len.
+ */
+ col = 0;
+ towrite = device->page_size;
+ if (towrite > len) {
+ towrite = len;
+ }
+ }
+
+ mutex_unlock(&chip->lock);
+ return res;
+
+done:
+ /*
+ * Write disable
+ */
+ txbuf[0] = 0x04;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write disable res=%d\n", chip->name, res);
+ }
+
+ mutex_unlock(&chip->lock);
+
+ return res;
+}
+
+/*
+ * nand_spi_er_isbad
+ */
+static int nand_spi_er_isbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct nand_spi_er *chip = mtd->priv;
+ uint32_t block;
+
+ if (ofs & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: address not aligned %llx\n", chip->name, ofs);
+ return -EINVAL;
+ }
+
+ block = ofs >> 17;
+
+ return test_bit(block, chip->bbt);
+}
+
+/*
+ * nand_spi_er_markbad
+ */
+static int nand_spi_er_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct nand_spi_er *chip = mtd->priv;
+ struct spi_device *spi = chip->spi;
+ uint32_t block;
+ uint32_t row;
+ uint8_t txbuf[7];
+ int res;
+ uint8_t stat;
+
+ if (ofs & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: address not aligned %llx\n", chip->name, ofs);
+ return -EINVAL;
+ }
+
+ block = ofs >> 17;
+
+ /*
+ * If it's already marked bad, no need to mark it
+ */
+ if (test_bit(block, chip->bbt)) {
+ return 0;
+ }
+
+ /*
+ * Mark it in our cache
+ */
+ __set_bit(block, chip->bbt);
+
+ /*
+ * Write the user bad block mark. If it fails, then we really
+ * can't do anything about it.
+ */
+ mutex_lock(&chip->lock);
+ chip->last_row = NAND_SPI_ER_LAST_ROW_INVALID;
+
+ /*
+ * Write enable
+ */
+ txbuf[0] = 0x06;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write enable res=%d\n", chip->name, res);
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+
+ /*
+ * Write the mark
+ */
+ txbuf[0] = 0x84;
+ txbuf[1] = 0x08;
+ txbuf[2] = NAND_SPI_ER_BAD_BLOCK_MARK_OFFSET;
+ txbuf[3] = 0xde;
+ txbuf[4] = 0xad;
+ txbuf[5] = 0xbe;
+ txbuf[6] = 0xef;
+ res = spi_write(spi, txbuf, 7);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write mark res=%d\n", chip->name, res);
+ goto done;
+ }
+
+ /*
+ * Program execute
+ */
+ row = ofs >> 11;
+ txbuf[0] = 0x10;
+ txbuf[1] = 0x00;
+ txbuf[2] = row >> 8;
+ txbuf[3] = row & 0xFF;
+ res = spi_write(spi, txbuf, 4);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed program execute res=%d\n", chip->name, res);
+ goto done;
+ }
+
+ /*
+ * Wait
+ */
+ res = nand_spi_er_busywait(chip, &stat);
+ if (res || (stat & NAND_SPI_ER_STATUS_OIP)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive res=%d stat=%02x\n", chip->name, res, stat);
+ if (res) {
+ goto done;
+ }
+
+ /*
+ * Chip is stuck?
+ */
+ res = -EIO;
+ goto done;
+ }
+
+ if (stat & (1 << 3)) {
+ res = -EBADMSG;
+ }
+
+done:
+ /*
+ * Write disable
+ */
+ txbuf[0] = 0x04;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed write disable res=%d\n", chip->name, res);
+ }
+
+ mutex_unlock(&chip->lock);
+
+ return res;
+}
+
+/*
+ * nand_spi_er_read_bbt
+ */
+static int nand_spi_er_read_bbt(struct nand_spi_er *chip)
+{
+ int j;
+ for (j = 0; j < chip->device->blocks; j++) {
+ uint8_t txbuf[4];
+ uint8_t rxbuf[16];
+ uint32_t bbmark;
+ int res;
+ unsigned short row = j << 6;
+ uint8_t stat;
+
+ /*
+ * Read Page
+ */
+ txbuf[0] = 0x13;
+ txbuf[1] = 0x00;
+ txbuf[2] = row >> 8;
+ txbuf[3] = row & 0xFF;
+ res = spi_write(chip->spi, txbuf, 4);
+ if (res) {
+ return res;
+ }
+
+ /*
+ * Wait
+ */
+ res = nand_spi_er_busywait(chip, &stat);
+ if (res || (stat & NAND_SPI_ER_STATUS_OIP)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive res=%d stat=%02x\n", chip->name, res, stat);
+ if (res) {
+ return res;
+ }
+
+ /*
+ * Chip is stuck?
+ */
+ return -EIO;
+ }
+
+ /*
+ * Check factory bad block mark
+ */
+ txbuf[0] = 0x03;
+ txbuf[1] = 0x08;
+ txbuf[2] = 0x00;
+ txbuf[3] = 0x00;
+ res = spi_write_then_read(chip->spi, txbuf, 4, rxbuf, 16);
+ if (res) {
+ return res;
+ }
+ if (rxbuf[0] != 0xFF) {
+ chip->nbb++;
+ __set_bit(j, chip->bbt);
+ continue;
+ }
+
+ memcpy(&bbmark, &rxbuf[8], 4);
+ if (bbmark == 0xdeadbeef) {
+ chip->nbb++;
+ __set_bit(j, chip->bbt);
+ }
+ }
+
+#if defined(CONFIG_MTD_DEBUG) && (MTD_DEBUG_LEVEL3 <= CONFIG_MTD_DEBUG_VERBOSE)
+ printk("%s: Bad Block Table:", chip->name);
+ for (j = 0; j < chip->device->blocks; j++) {
+ if ((j % 64) == 0) {
+ printk("\n%s: block %03x: ", chip->name, j);
+ }
+ printk("%c", test_bit(j, chip->bbt) ? 'X' : '.');
+ }
+ printk("\n%s: Bad Block Numbers: ", chip->name);
+ for (j = 0; j < chip->device->blocks; j++) {
+ if (test_bit(j, chip->bbt)) {
+ printk("%x ", j);
+ }
+ }
+ printk("\n");
+#endif
+
+ return 0;
+}
+
+#ifndef MODULE
+/*
+ * Called at boot time:
+ *
+ * nand_spi_er=read_only
+ * if read_only specified then do not unlock device
+ */
+static int __init nand_spi_er_setup(char *str)
+{
+ if (str && (strncasecmp(str, "read_only", 9) == 0)) {
+ read_only = 1;
+ }
+ return 0;
+}
+
+__setup("nand_spi_er=", nand_spi_er_setup);
+#endif
+
+/*
+ * nand_spi_er_probe
+ * Detect and initialize nand_spi_er device.
+ */
+static int __devinit nand_spi_er_probe(struct spi_device *spi)
+{
+ uint8_t txbuf[3];
+ uint8_t rxbuf[2];
+ int i;
+ int res;
+ size_t bbt_bytes;
+ struct nand_spi_er *chip;
+ const struct nand_spi_er_device *device;
+
+ res = spi_setup(spi);
+ if (res) {
+ return res;
+ }
+
+ /*
+ * Reset
+ */
+ for (i = 0; i < 2; i++) {
+ txbuf[0] = 0xFF;
+ res = spi_write(spi, txbuf, 1);
+ if (res) {
+ return res;
+ }
+ udelay(250);
+ }
+ udelay(1000);
+
+ /*
+ * Read ID
+ */
+ txbuf[0] = 0x9F;
+ txbuf[1] = 0x00;
+ res = spi_write_then_read(spi, txbuf, 2, rxbuf, 2);
+ if (res) {
+ return res;
+ }
+
+ device = nand_spi_er_devices;
+ for (i = 0; i < ARRAY_SIZE(nand_spi_er_devices); i++) {
+ if ((device->id0 == rxbuf[0]) && (device->id1 == rxbuf[1])) {
+ break;
+ }
+ device++;
+ }
+ if (i == ARRAY_SIZE(nand_spi_er_devices)) {
+ return -ENODEV;
+ }
+
+ /*
+ * Initialize our chip structure
+ */
+ bbt_bytes = DIV_ROUND_UP(device->blocks, BITS_PER_BYTE);
+ chip = kzalloc(sizeof(struct nand_spi_er) + bbt_bytes, GFP_KERNEL);
+ if (!chip) {
+ return -ENOMEM;
+ }
+ snprintf(chip->name, sizeof(chip->name), "%s.%d.%d", device->name, spi->master->bus_num, spi->chip_select);
+
+ chip->spi = spi;
+ chip->device = device;
+ chip->last_row = NAND_SPI_ER_LAST_ROW_INVALID;
+
+ mutex_init(&chip->lock);
+
+ chip->mtd.type = MTD_NANDFLASH;
+ chip->mtd.flags = MTD_WRITEABLE;
+
+ /*
+ * #blocks * block size * n blocks
+ */
+ chip->mtd.size = device->blocks * device->pages_per_block * device->page_size;
+ chip->mtd.erasesize = device->erase_size;
+
+ /*
+ * 1 page, optionally we can support partial write (512)
+ */
+ chip->mtd.writesize = device->write_size;
+ chip->mtd.name = device->name;
+ chip->mtd.erase = nand_spi_er_erase;
+ chip->mtd.read = nand_spi_er_read;
+ chip->mtd.write = nand_spi_er_write;
+ chip->mtd.block_isbad = nand_spi_er_isbad;
+ chip->mtd.block_markbad = nand_spi_er_markbad;
+ chip->mtd.priv = chip;
+
+ /*
+ * Cache the bad block table
+ */
+ res = nand_spi_er_read_bbt(chip);
+ if (res) {
+ kfree(chip);
+ return res;
+ }
+
+ /*
+ * Un/lock the chip
+ */
+ txbuf[0] = 0x1F;
+ txbuf[1] = 0xA0;
+ if (read_only) {
+ txbuf[2] = 0x38;
+ } else {
+ txbuf[2] = 0x00;
+ }
+ res = spi_write(spi, txbuf, 3);
+ if (res) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: failed lock operation res=%d\n", chip->name, res);
+ mutex_unlock(&chip->lock);
+ return res;
+ }
+
+ spi_set_drvdata(spi, chip);
+
+ printk(KERN_INFO "%s: added device %s size: %u KBytes %u bad blocks %s\n", spi->dev.bus_id, chip->mtd.name, DIV_ROUND_UP(chip->mtd.size, 1024), chip->nbb, read_only ? "[read only]" : "");
+ return add_mtd_device(&chip->mtd);
+}
+
+/*
+ * nand_spi_er_remove
+ */
+static int __devexit nand_spi_er_remove(struct spi_device *spi)
+{
+ struct nand_spi_er *chip = spi_get_drvdata(spi);
+ int status = 0;
+
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", spi->dev.bus_id);
+ status = del_mtd_device(&chip->mtd);
+ if (status == 0)
+ kfree(chip);
+ return status;
+}
+
+static struct spi_driver nand_spi_er_driver = {
+ .driver = {
+ .name = "nand-spi-er",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = nand_spi_er_probe,
+ .remove = __devexit_p(nand_spi_er_remove),
+
+ /* FIXME: investigate suspend and resume... */
+};
+
+/*
+ * nand_spi_er_init
+ */
+static int __init nand_spi_er_init(void)
+{
+ return spi_register_driver(&nand_spi_er_driver);
+}
+module_init(nand_spi_er_init);
+
+/*
+ * nand_spi_er_exit
+ */
+static void __exit nand_spi_er_exit(void)
+{
+ spi_unregister_driver(&nand_spi_er_driver);
+}
+module_exit(nand_spi_er_exit);
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Patrick Tjin");
+MODULE_DESCRIPTION("MTD nand_spi_er driver");
diff --git a/target/linux/ubicom32/files/drivers/mtd/devices/ubi32-m25p80.c b/target/linux/ubicom32/files/drivers/mtd/devices/ubi32-m25p80.c
new file mode 100644
index 0000000..405491c
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/mtd/devices/ubi32-m25p80.c
@@ -0,0 +1,1066 @@
+/*
+ * drivers/mtd/devices/ubi32-m25p80.c
+ * NOR flash driver, Ubicom processor internal SPI flash interface.
+ *
+ * This code instantiates the serial flash that contains the
+ * original bootcode. The serial flash start at address 0x60000000
+ * in both Ubicom32V3 and Ubicom32V4 ISAs.
+ *
+ * This piece of flash is made to appear as a Memory Technology
+ * Device (MTD) with this driver to allow Read/Write/Erase operations.
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/flash.h>
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+
+#include <asm/ip5000.h>
+#include <asm/devtree.h>
+
+#define UBICOM32_FLASH_BASE 0x60000000
+#define UBICOM32_FLASH_MAX_SIZE 0x01000000
+#define UBICOM32_FLASH_START 0x00000000
+#define UBICOM32_KERNEL_OFFSET 0x00010000 /* The kernel starts after Ubicom
+ * .protect section. */
+
+static struct mtd_partition ubicom32_flash_partitions[] = {
+ {
+ .name = "Bootloader", /* Protected Section
+ * Partition */
+ .size = 0x10000,
+ .offset = UBICOM32_FLASH_START,
+// .mask_flags = MTD_WRITEABLE /* Mark Read-only */
+ },
+ {
+ .name = "Kernel", /* Kernel Partition. */
+ .size = 0, /* this will be set up during
+ * probe stage. At that time we
+ * will know end of linux image
+ * in flash. */
+ .offset = MTDPART_OFS_APPEND, /* Starts right after Protected
+ * section. */
+// .mask_flags = MTD_WRITEABLE /* Mark Read-only */
+ },
+ {
+ .name = "Rest", /* Rest of the flash. */
+ .size = 0x200000, /* Use up what remains in the
+ * flash. */
+ .offset = MTDPART_OFS_NXTBLK, /* Starts right after Protected
+ * section. */
+ }
+};
+
+static struct flash_platform_data ubicom32_flash_data = {
+ .name = "ubicom32_boot_flash",
+ .parts = ubicom32_flash_partitions,
+ .nr_parts = ARRAY_SIZE(ubicom32_flash_partitions),
+};
+
+static struct resource ubicom32_flash_resource[] = {
+ {
+ .start = UBICOM32_FLASH_BASE,
+ .end = UBICOM32_FLASH_BASE +
+ UBICOM32_FLASH_MAX_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device ubicom32_flash_device = {
+ .name = "ubicom32flashdriver",
+ .id = 0, /* Bus number */
+ .num_resources = ARRAY_SIZE(ubicom32_flash_resource),
+ .resource = ubicom32_flash_resource,
+ .dev = {
+ .platform_data = &ubicom32_flash_data,
+ },
+};
+
+static struct platform_device *ubicom32_flash_devices[] = {
+ &ubicom32_flash_device,
+};
+
+static int __init ubicom32_flash_init(void)
+{
+ printk(KERN_INFO "%s(): registering device resources\n",
+ __FUNCTION__);
+ platform_add_devices(ubicom32_flash_devices,
+ ARRAY_SIZE(ubicom32_flash_devices));
+ return 0;
+}
+
+arch_initcall(ubicom32_flash_init);
+
+/*
+ * MTD SPI driver for ST M25Pxx (and similar) serial flash chips through
+ * Ubicom32 SPI controller.
+ *
+ * Author: Mike Lavender, mike@steroidmicros.com
+ *
+ * Copyright (c) 2005, Intec Automation Inc.
+ *
+ * Some parts are based on lart.c by Abraham Van Der Merwe
+ *
+ * Cleaned up and generalized based on mtd_dataflash.c
+ *
+ * This code is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#define FLASH_PAGESIZE 256
+
+/* Flash opcodes. */
+#define OPCODE_WREN 0x06 /* Write enable */
+#define OPCODE_RDSR 0x05 /* Read status register */
+#define OPCODE_READ 0x03 /* Read data bytes (low frequency) */
+#define OPCODE_FAST_READ 0x0b /* Read data bytes (high frequency) */
+#define OPCODE_PP 0x02 /* Page program (up to 256 bytes) */
+#define OPCODE_BE_4K 0x20 /* Erase 4KiB block */
+#define OPCODE_BE_32K 0x52 /* Erase 32KiB block */
+#define OPCODE_SE 0xd8 /* Sector erase (usually 64KiB) */
+#define OPCODE_RDID 0x9f /* Read JEDEC ID */
+
+/* Status Register bits. */
+#define SR_WIP 1 /* Write in progress */
+#define SR_WEL 2 /* Write enable latch */
+/* meaning of other SR_* bits may differ between vendors */
+#define SR_BP0 4 /* Block protect 0 */
+#define SR_BP1 8 /* Block protect 1 */
+#define SR_BP2 0x10 /* Block protect 2 */
+#define SR_SRWD 0x80 /* SR write protect */
+
+/* Define max times to check status register before we give up. */
+#define MAX_READY_WAIT_COUNT 100000
+
+
+#ifdef CONFIG_MTD_PARTITIONS
+#define mtd_has_partitions() (1)
+#else
+#define mtd_has_partitions() (0)
+#endif
+
+/*
+ * Ubicom32 FLASH Command Set
+ */
+#define FLASH_FC_INST_CMD 0x00 /* for SPI command only transaction */
+#define FLASH_FC_INST_WR 0x01 /* for SPI write transaction */
+#define FLASH_FC_INST_RD 0x02 /* for SPI read transaction */
+
+#define ALIGN_DOWN(v, a) ((v) & ~((a) - 1))
+#define ALIGN_UP(v, a) (((v) + ((a) - 1)) & ~((a) - 1))
+
+#define FLASH_COMMAND_KICK_OFF(io) \
+ asm volatile( \
+ " bset "D(IO_INT_CLR)"(%0), #0, #%%bit("D(IO_XFL_INT_DONE)") \n\t" \
+ " jmpt.t .+4 \n\t" \
+ " bset "D(IO_INT_SET)"(%0), #0, #%%bit("D(IO_XFL_INT_START)") \n\t" \
+ : \
+ : "a" (io) \
+ : "memory", "cc" \
+ );
+
+#define FLASH_COMMAND_WAIT_FOR_COMPLETION(io) \
+ asm volatile( \
+ " btst "D(IO_INT_STATUS)"(%0), #%%bit("D(IO_XFL_INT_DONE)") \n\t" \
+ " jmpeq.f .-4 \n\t" \
+ : \
+ : "a" (io) \
+ : "memory", "cc" \
+ );
+
+#define FLASH_COMMAND_EXEC(io) \
+ FLASH_COMMAND_KICK_OFF(io) \
+ FLASH_COMMAND_WAIT_FOR_COMPLETION(io)
+
+
+#define OSC1_FREQ 12000000
+#define TEN_MICRO_SECONDS (OSC1_FREQ * 10 / 1000000)
+
+/*
+ * We will have to eventually replace this null definition with the real thing.
+ */
+#define WATCHDOG_RESET()
+
+#define EXTFLASH_WRITE_FIFO_SIZE 32
+#define EXTFLASH_WRITE_BLOCK_SIZE EXTFLASH_WRITE_FIFO_SIZE /* limit the size to
+ * FIFO capacity, so
+ * the thread can be
+ * suspended. */
+
+#define JFFS2_FILESYSTEM_SIZE 0x100000
+
+/****************************************************************************/
+
+struct m25p {
+ struct platform_device *plt_dev;
+ struct mutex lock;
+ struct mtd_info mtd;
+ unsigned partitioned:1;
+ u8 erase_opcode;
+ u8 command[4];
+};
+
+static inline struct m25p *mtd_to_m25p(struct mtd_info *mtd)
+{
+ return container_of(mtd, struct m25p, mtd);
+}
+
+/****************************************************************************/
+
+/*
+ * Internal helper functions
+ */
+
+/*
+ * Read the status register, returning its value in the location
+ * Return the status register value.
+ * Returns negative if error occurred.
+ */
+static int read_sr(struct m25p *flash)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)RA;
+
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) |
+ IO_XFL_CTL1_FC_DATA(1);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_RDSR);
+ FLASH_COMMAND_EXEC(io);
+
+ return io->status1 & 0xff;
+}
+
+/*
+ * mem_flash_io_read_u32()
+ */
+static u32 mem_flash_io_read_u32(u32 addr)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)RA;
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) |
+ IO_XFL_CTL1_FC_DATA(4) | IO_XFL_CTL1_FC_DUMMY(1) |
+ IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_FAST_READ) |
+ IO_XFL_CTL2_FC_ADDR(addr);
+ FLASH_COMMAND_EXEC(io);
+ return io->status1;
+}
+
+/*
+ * mem_flash_read_u8()
+ */
+static u8 mem_flash_read_u8(u32 addr)
+{
+ u32 tmp_addr = ALIGN_DOWN(addr, 4);
+ u32 tmp_data = mem_flash_io_read_u32(tmp_addr);
+ u8 *ptr = (u8 *)&tmp_data;
+ return ptr[addr & 0x3];
+}
+
+/*
+ * mem_flash_read()
+ * No need to lock as read is implemented with ireads (same as normal flash
+ * execution).
+ */
+static void mem_flash_read(u32 addr, void *dst, size_t length)
+{
+ /*
+ * Range check
+ */
+ /*
+ * Fix source alignment.
+ */
+ while (addr & 0x03) {
+ if (length == 0) {
+ return;
+ }
+ *((u8 *)dst) = mem_flash_read_u8(addr++);
+ dst++;
+ length--;
+ }
+
+ while (length >= 4) {
+ u32 tmp_data = mem_flash_io_read_u32(addr);
+ addr += 4;
+ length -= 4;
+
+ /*
+ * Send the data to the destination.
+ */
+ memcpy((void *)dst, (void *)&tmp_data, 4);
+ dst += 4;
+ }
+
+ while (length--) {
+ *((u8 *)dst) = mem_flash_read_u8(addr++);
+ dst++;
+ }
+}
+
+/*
+ * mem_flash_wait_until_complete()
+ */
+static void mem_flash_wait_until_complete(void)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)RA;
+
+ do {
+ /*
+ * Put a delay here to deal with flash programming problem.
+ */
+ u32 mptval = UBICOM32_IO_TIMER->mptval + TEN_MICRO_SECONDS;
+ while (UBICOM32_IO_TIMER->mptval < mptval)
+ ;
+
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) |
+ IO_XFL_CTL1_FC_DATA(1);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_RDSR);
+ FLASH_COMMAND_EXEC(io);
+ } while (io->status1 & SR_WIP);
+}
+
+/*
+ * mem_flash_write_next()
+ */
+static size_t mem_flash_write_next(u32 addr, u8 *buf, size_t length)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)RA;
+ u32 data_start = addr;
+ u32 data_end = addr + length;
+ size_t count;
+ u32 i, j;
+
+ /*
+ * Top limit address.
+ */
+ u32 block_start = ALIGN_DOWN(data_start, 4);
+ u32 block_end = block_start + EXTFLASH_WRITE_BLOCK_SIZE;
+
+ union {
+ u8 byte[EXTFLASH_WRITE_BLOCK_SIZE];
+ u32 word[EXTFLASH_WRITE_BLOCK_SIZE / 4];
+ } write_buf;
+
+ u32 *flash_addr = (u32 *)block_start;
+
+ /*
+ * The write block must be limited by FLASH internal buffer.
+ */
+ u32 block_end_align = ALIGN_DOWN(block_end, 256);
+ bool write_needed;
+
+ block_end = (block_end_align > block_start)
+ ? block_end_align : block_end;
+ data_end = (data_end <= block_end) ? data_end : block_end;
+ block_end = ALIGN_UP(data_end, 4);
+ count = data_end - data_start;
+
+ /*
+ * Transfer data to a buffer.
+ */
+ for (i = 0; i < (block_end - block_start) / 4; i++) {
+ /*
+ * The FLASH read can hold D-cache for a long time.
+ * Use I/O operation to read FLASH to avoid starving other
+ * threads, especially HRT. (Do this for application only)
+ */
+ write_buf.word[i] = mem_flash_io_read_u32(
+ (u32)(&flash_addr[i]));
+ }
+
+ write_needed = false;
+ for (i = 0, j = (data_start - block_start);
+ i < (data_end - data_start); i++, j++) {
+ write_needed = write_needed || (write_buf.byte[j] != buf[i]);
+ write_buf.byte[j] &= buf[i];
+ }
+
+
+ /*
+ * If the data in FLASH is identical to what to be written. Then skip
+ * it.
+ */
+ if (write_needed) {
+ /*
+ * Write to flash.
+ */
+ void *tmp __attribute__((unused));
+ s32 extra_words;
+
+ asm volatile(
+ " move.4 %0, %2 \n\t"
+ " bset "D(IO_INT_SET)"(%1), #0, #%%bit("D(IO_PORTX_INT_FIFO_TX_RESET)") \n\t"
+ " pipe_flush 0 \n\t"
+ " .rept "D(EXTFLASH_WRITE_FIFO_SIZE / 4)" \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%1), (%0)4++ \n\t"
+ " .endr \n\t"
+ : "=&a" (tmp)
+ : "a" (io), "r" (&write_buf.word[0])
+ : "memory", "cc"
+ );
+
+ /* Lock FLASH for write access. */
+ io->ctl0 |= IO_XFL_CTL0_MCB_LOCK;
+
+ /* Command: WREN */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_WREN);
+ FLASH_COMMAND_EXEC(io);
+
+ /* Command: BYTE PROGRAM */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_WR) |
+ IO_XFL_CTL1_FC_DATA(block_end - block_start) |
+ IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_PP) |
+ IO_XFL_CTL2_FC_ADDR(block_start);
+ FLASH_COMMAND_KICK_OFF(io);
+
+ extra_words = (s32)(block_end - block_start -
+ EXTFLASH_WRITE_FIFO_SIZE) / 4;
+ if (extra_words > 0) {
+ asm volatile(
+ " move.4 %0, %3 \n\t"
+ "1: cmpi "D(IO_FIFO_LEVEL)"(%1), #4 \n\t"
+ " jmpgt.s.t 1b \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%1), (%0)4++ \n\t"
+ " add.4 %2, #-1, %2 \n\t"
+ " jmpgt.t 1b \n\t"
+ : "=&a" (tmp)
+ : "a" (io), "d" (extra_words),
+ "r" (&write_buf.word[EXTFLASH_WRITE_FIFO_SIZE / 4])
+ : "memory", "cc"
+ );
+ }
+ FLASH_COMMAND_WAIT_FOR_COMPLETION(io);
+
+ mem_flash_wait_until_complete();
+
+
+ /* Unlock FLASH for cache access. */
+ io->ctl0 &= ~IO_XFL_CTL0_MCB_LOCK;
+ }
+
+ /*
+ * Complete.
+ */
+ return count;
+}
+
+/*
+ * mem_flash_write()
+ */
+static void mem_flash_write(u32 addr, const void *src, size_t length)
+{
+ /*
+ * Write data
+ */
+ u8_t *ptr = (u8_t *)src;
+ while (length) {
+ size_t count = mem_flash_write_next(addr, ptr, length);
+ addr += count;
+ ptr += count;
+ length -= count;
+ }
+}
+
+/*
+ * Service routine to read status register until ready, or timeout occurs.
+ * Returns non-zero if error.
+ */
+static int wait_till_ready(struct m25p *flash)
+{
+ int count;
+ int sr;
+
+ /* one chip guarantees max 5 msec wait here after page writes,
+ * but potentially three seconds (!) after page erase.
+ */
+ for (count = 0; count < MAX_READY_WAIT_COUNT; count++) {
+ u32 mptval;
+ sr = read_sr(flash);
+ if (sr < 0)
+ break;
+ else if (!(sr & SR_WIP))
+ return 0;
+
+ /*
+ * Put a 10us delay here to deal with flash programming problem.
+ */
+ mptval = UBICOM32_IO_TIMER->mptval + TEN_MICRO_SECONDS;
+ while ((s32)(mptval - UBICOM32_IO_TIMER->mptval) > 0) {
+ WATCHDOG_RESET();
+ }
+ /* REVISIT sometimes sleeping would be best */
+ }
+
+ return 1;
+}
+
+/*
+ * mem_flash_erase_page()
+ */
+static void mem_flash_erase_page(u32 addr)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)RA;
+
+ /* Lock FLASH for write access. */
+ io->ctl0 |= IO_XFL_CTL0_MCB_LOCK;
+
+ /* Command: WREN */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_WREN);
+ FLASH_COMMAND_EXEC(io);
+
+ /* Command: ERASE */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD) |
+ IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_SE) |
+ IO_XFL_CTL2_FC_ADDR(addr);
+ FLASH_COMMAND_EXEC(io);
+
+ mem_flash_wait_until_complete();
+
+ /* Unlock FLASH for cache access. */
+ io->ctl0 &= ~IO_XFL_CTL0_MCB_LOCK;
+}
+
+/*
+ * mem_flash_erase()
+ */
+static u32 mem_flash_erase(u32 addr, u32 length)
+{
+ /*
+ * Calculate the endaddress to be the first address of the page
+ * just beyond this erase section of pages.
+ */
+ u32 endaddr = addr + length;
+
+ /*
+ * Erase.
+ */
+ while (addr < endaddr) {
+ u32 test_addr = addr;
+ mem_flash_erase_page(addr);
+
+ /*
+ * Test how much was erased as actual flash page at this address
+ * may be smaller than the expected page size.
+ */
+ while (test_addr < endaddr) {
+ /*
+ * The FLASH read can hold D-cache for a long time. Use
+ * I/O operation to read FLASH to avoid starving other
+ * threads, especially HRT. (Do this for application
+ * only)
+ */
+ if (mem_flash_io_read_u32(test_addr) != 0xFFFFFFFF) {
+ break;
+ }
+ test_addr += 4;
+ }
+ if (test_addr == addr) {
+ printk("erase failed at address 0x%x, skipping",
+ test_addr);
+ test_addr += 4;
+ return 1;
+ }
+ addr = test_addr;
+ }
+ return 0;
+}
+
+
+/****************************************************************************/
+
+/*
+ * MTD implementation
+ */
+
+/*
+ * Erase an address range on the flash chip. The address range may extend
+ * one or more erase sectors. Return an error is there is a problem erasing.
+ */
+static int ubicom32_flash_driver_erase(struct mtd_info *mtd,
+ struct erase_info *instr)
+{
+ struct m25p *flash = mtd_to_m25p(mtd);
+ u32 addr, len;
+
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %lld\n",
+ dev_name(&flash->plt_dev->dev), __FUNCTION__, "at",
+ (u32)instr->addr, instr->len);
+
+ /* sanity checks */
+ if (instr->addr + instr->len > flash->mtd.size)
+ return -EINVAL;
+ if ((instr->addr % mtd->erasesize) != 0
+ || (instr->len % mtd->erasesize) != 0) {
+ return -EINVAL;
+ }
+
+ addr = instr->addr + UBICOM32_FLASH_BASE;
+ len = instr->len;
+
+ mutex_lock(&flash->lock);
+
+ /* REVISIT in some cases we could speed up erasing large regions
+ * by using OPCODE_SE instead of OPCODE_BE_4K
+ */
+
+ /* now erase those sectors */
+ if (mem_flash_erase(addr, len)) {
+ instr->state = MTD_ERASE_FAILED;
+ mutex_unlock(&flash->lock);
+ return -EIO;
+ }
+
+ mutex_unlock(&flash->lock);
+ instr->state = MTD_ERASE_DONE;
+ mtd_erase_callback(instr);
+ return 0;
+}
+
+/*
+ * Read an address range from the flash chip. The address range
+ * may be any size provided it is within the physical boundaries.
+ */
+static int ubicom32_flash_driver_read(struct mtd_info *mtd, loff_t from,
+ size_t len, size_t *retlen, u_char *buf)
+{
+ struct m25p *flash = mtd_to_m25p(mtd);
+ u32 base_addr = UBICOM32_FLASH_BASE + from;
+
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
+ dev_name(&flash->plt_dev->dev), __FUNCTION__, "from",
+ (u32)from, len);
+
+ /* sanity checks */
+ if (!len)
+ return 0;
+
+ if (from + len > flash->mtd.size)
+ return -EINVAL;
+
+ /* Byte count starts at zero. */
+ if (retlen)
+ *retlen = 0;
+
+ mutex_lock(&flash->lock);
+
+ /* Wait till previous write/erase is done. */
+ if (wait_till_ready(flash)) {
+ /* REVISIT status return?? */
+ mutex_unlock(&flash->lock);
+ return 1;
+ }
+
+ mem_flash_read(base_addr, (void *)buf, len);
+
+ if (retlen)
+ *retlen = len;
+
+ mutex_unlock(&flash->lock);
+
+ return 0;
+}
+
+/*
+ * Write an address range to the flash chip. Data must be written in
+ * FLASH_PAGESIZE chunks. The address range may be any size provided
+ * it is within the physical boundaries.
+ */
+static int ubicom32_flash_driver_write(struct mtd_info *mtd, loff_t to,
+ size_t len, size_t *retlen,
+ const u_char *buf)
+{
+ struct m25p *flash = mtd_to_m25p(mtd);
+ u32 base_addr = UBICOM32_FLASH_BASE + to;
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
+ dev_name(&flash->plt_dev->dev), __FUNCTION__, "to",
+ (u32)to, len);
+
+ if (retlen)
+ *retlen = 0;
+
+ /* sanity checks */
+ if (!len)
+ return 0;
+
+ if (to + len > flash->mtd.size)
+ return -EINVAL;
+
+ mutex_lock(&flash->lock);
+
+ mem_flash_write(base_addr, (void *) buf, len);
+
+ /* Wait until finished previous write command. */
+ if (wait_till_ready(flash)) {
+ mutex_unlock(&flash->lock);
+ return 1;
+ }
+
+ if (retlen)
+ *retlen = len;
+
+ mutex_unlock(&flash->lock);
+ return 0;
+}
+
+
+/****************************************************************************/
+
+/*
+ * SPI device driver setup and teardown
+ */
+
+struct flash_info {
+ char *name;
+
+ /* JEDEC id zero means "no ID" (most older chips); otherwise it has
+ * a high byte of zero plus three data bytes: the manufacturer id,
+ * then a two byte device id.
+ */
+ u32 jedec_id;
+
+ /* The size listed here is what works with OPCODE_SE, which isn't
+ * necessarily called a "sector" by the vendor.
+ */
+ unsigned sector_size;
+ u16 n_sectors;
+
+ u16 flags;
+#define SECT_4K 0x01 /* OPCODE_BE_4K works uniformly */
+};
+
+
+/* NOTE: double check command sets and memory organization when you add
+ * more flash chips. This current list focusses on newer chips, which
+ * have been converging on command sets which including JEDEC ID.
+ */
+static struct flash_info __devinitdata m25p_data[] = {
+
+ /* Atmel -- some are (confusingly) marketed as "DataFlash" */
+ { "at25fs010", 0x1f6601, 32 * 1024, 4, SECT_4K, },
+ { "at25fs040", 0x1f6604, 64 * 1024, 8, SECT_4K, },
+
+ { "at25df041a", 0x1f4401, 64 * 1024, 8, SECT_4K, },
+
+ { "at26f004", 0x1f0400, 64 * 1024, 8, SECT_4K, },
+ { "at26df081a", 0x1f4501, 64 * 1024, 16, SECT_4K, },
+ { "at26df161a", 0x1f4601, 64 * 1024, 32, SECT_4K, },
+ { "at26df321", 0x1f4701, 64 * 1024, 64, SECT_4K, },
+
+ /* Spansion -- single (large) sector size only, at least
+ * for the chips listed here (without boot sectors).
+ */
+ { "s25sl004a", 0x010212, 64 * 1024, 8, },
+ { "s25sl008a", 0x010213, 64 * 1024, 16, },
+ { "s25sl016a", 0x010214, 64 * 1024, 32, },
+ { "s25sl032a", 0x010215, 64 * 1024, 64, },
+ { "s25sl064a", 0x010216, 64 * 1024, 128, },
+
+ /* SST -- large erase sizes are "overlays", "sectors" are 4K */
+ { "sst25vf040b", 0xbf258d, 64 * 1024, 8, SECT_4K, },
+ { "sst25vf080b", 0xbf258e, 64 * 1024, 16, SECT_4K, },
+ { "sst25vf016b", 0xbf2541, 64 * 1024, 32, SECT_4K, },
+ { "sst25vf032b", 0xbf254a, 64 * 1024, 64, SECT_4K, },
+
+ /* ST Microelectronics -- newer production may have feature updates */
+ { "m25p05", 0x202010, 32 * 1024, 2, },
+ { "m25p10", 0x202011, 32 * 1024, 4, },
+ { "m25p20", 0x202012, 64 * 1024, 4, },
+ { "m25p40", 0x202013, 64 * 1024, 8, },
+ { "m25p80", 0, 64 * 1024, 16, },
+ { "m25p16", 0x202015, 64 * 1024, 32, },
+ { "m25p32", 0x202016, 64 * 1024, 64, },
+ { "m25p64", 0x202017, 64 * 1024, 128, },
+ { "m25p128", 0x202018, 256 * 1024, 64, },
+
+ { "m45pe80", 0x204014, 64 * 1024, 16, },
+ { "m45pe16", 0x204015, 64 * 1024, 32, },
+
+ { "m25pe80", 0x208014, 64 * 1024, 16, },
+ { "m25pe16", 0x208015, 64 * 1024, 32, SECT_4K, },
+
+ /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
+ { "w25x10", 0xef3011, 64 * 1024, 2, SECT_4K, },
+ { "w25x20", 0xef3012, 64 * 1024, 4, SECT_4K, },
+ { "w25x40", 0xef3013, 64 * 1024, 8, SECT_4K, },
+ { "w25x80", 0xef3014, 64 * 1024, 16, SECT_4K, },
+ { "w25x16", 0xef3015, 64 * 1024, 32, SECT_4K, },
+ { "w25x32", 0xef3016, 64 * 1024, 64, SECT_4K, },
+ { "w25x64", 0xef3017, 64 * 1024, 128, SECT_4K, },
+
+ /* Macronix -- mx25lxxx */
+ { "mx25l32", 0xc22016, 64 * 1024, 64, },
+ { "mx25l64", 0xc22017, 64 * 1024, 128, },
+ { "mx25l128", 0xc22018, 64 * 1024, 256, },
+
+};
+
+struct flash_info *__devinit jedec_probe(struct platform_device *spi)
+{
+ int tmp;
+ u32 jedec;
+ struct flash_info *info;
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)RA;
+
+ /*
+ * Setup and run RDID command on the flash.
+ */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) |
+ IO_XFL_CTL1_FC_DATA(3);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(OPCODE_RDID);
+ FLASH_COMMAND_EXEC(io);
+
+ jedec = io->status1 & 0x00ffffff;
+
+ for (tmp = 0, info = m25p_data;
+ tmp < ARRAY_SIZE(m25p_data);
+ tmp++, info++) {
+ if (info->jedec_id == jedec)
+ return info;
+ }
+ dev_err(&spi->dev, "unrecognized JEDEC id %06x\n", jedec);
+ return NULL;
+}
+
+
+/*
+ * board specific setup should have ensured the SPI clock used here
+ * matches what the READ command supports, at least until this driver
+ * understands FAST_READ (for clocks over 25 MHz).
+ */
+static int __devinit ubicom32_flash_probe(struct platform_device *spi)
+{
+ struct flash_platform_data *data;
+ struct m25p *flash;
+ struct flash_info *info;
+ unsigned i;
+
+ /* Platform data helps sort out which chip type we have, as
+ * well as how this board partitions it. If we don't have
+ * a chip ID, try the JEDEC id commands; they'll work for most
+ * newer chips, even if we don't recognize the particular chip.
+ */
+ data = spi->dev.platform_data;
+ if (data && data->type) {
+ for (i = 0, info = m25p_data;
+ i < ARRAY_SIZE(m25p_data);
+ i++, info++) {
+ if (strcmp(data->type, info->name) == 0)
+ break;
+ }
+
+ /* unrecognized chip? */
+ if (i == ARRAY_SIZE(m25p_data)) {
+ DEBUG(MTD_DEBUG_LEVEL0, "%s: unrecognized id %s\n",
+ dev_name(&spi->dev), data->type);
+ info = NULL;
+
+ /* recognized; is that chip really what's there? */
+ } else if (info->jedec_id) {
+ struct flash_info *chip = jedec_probe(spi);
+
+ if (!chip || chip != info) {
+ dev_warn(&spi->dev, "found %s, expected %s\n",
+ chip ? chip->name : "UNKNOWN",
+ info->name);
+ info = NULL;
+ }
+ }
+ } else
+ info = jedec_probe(spi);
+
+ if (!info)
+ return -ENODEV;
+
+ flash = kzalloc(sizeof *flash, GFP_KERNEL);
+ if (!flash)
+ return -ENOMEM;
+
+ flash->plt_dev = spi;
+ mutex_init(&flash->lock);
+ dev_set_drvdata(&spi->dev, flash);
+
+ if (data && data->name)
+ flash->mtd.name = data->name;
+ else
+ flash->mtd.name = dev_name(&spi->dev);
+
+ flash->mtd.type = MTD_NORFLASH;
+ flash->mtd.writesize = 1;
+ flash->mtd.flags = MTD_CAP_NORFLASH;
+ flash->mtd.size = info->sector_size * info->n_sectors;
+ flash->mtd.erase = ubicom32_flash_driver_erase;
+ flash->mtd.read = ubicom32_flash_driver_read;
+ flash->mtd.write = ubicom32_flash_driver_write;
+
+ /* prefer "small sector" erase if possible */
+ /*
+ * The Ubicom erase code does not use the opcode for smaller sectors,
+ * so disable that functionality and keep erasesize == sector_size
+ * so that the test in ubicom32_flash_driver_erase works properly.
+ *
+ * This was: `if (info->flags & SECT_4K) {' instead of `if (0) {'
+ */
+ if (0) {
+ flash->erase_opcode = OPCODE_BE_4K;
+ flash->mtd.erasesize = 4096;
+ } else {
+ flash->erase_opcode = OPCODE_SE;
+ flash->mtd.erasesize = info->sector_size;
+ }
+
+ dev_info(&spi->dev, "%s (%lld Kbytes)\n", info->name,
+ flash->mtd.size / 1024);
+
+ DEBUG(MTD_DEBUG_LEVEL2,
+ "mtd .name = %s, .size = 0x%.8llx (%lluMiB) "
+ ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n",
+ flash->mtd.name,
+ flash->mtd.size, flash->mtd.size / (1024*1024),
+ flash->mtd.erasesize, flash->mtd.erasesize / 1024,
+ flash->mtd.numeraseregions);
+
+ if (flash->mtd.numeraseregions)
+ for (i = 0; i < flash->mtd.numeraseregions; i++)
+ DEBUG(MTD_DEBUG_LEVEL2,
+ "mtd.eraseregions[%d] = { .offset = 0x%.8llx, "
+ ".erasesize = 0x%.8x (%uKiB), "
+ ".numblocks = %d }\n",
+ i, flash->mtd.eraseregions[i].offset,
+ flash->mtd.eraseregions[i].erasesize,
+ flash->mtd.eraseregions[i].erasesize / 1024,
+ flash->mtd.eraseregions[i].numblocks);
+
+
+ /* partitions should match sector boundaries; and it may be good to
+ * use readonly partitions for writeprotected sectors (BP2..BP0).
+ */
+ if (mtd_has_partitions()) {
+ struct mtd_partition *parts = NULL;
+ int nr_parts = 0;
+
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+ static const char *part_probes[] = { "cmdlinepart", NULL, };
+
+ nr_parts = parse_mtd_partitions(&flash->mtd,
+ part_probes, &parts, 0);
+#endif
+
+ if (nr_parts <= 0 && data && data->parts) {
+ parts = data->parts;
+ nr_parts = data->nr_parts;
+ if (nr_parts >= 2) {
+ /*
+ * Set last partition size to be 1M.
+ */
+ parts[1].size = flash->mtd.size -
+ parts[0].size - JFFS2_FILESYSTEM_SIZE;
+ parts[2].size = JFFS2_FILESYSTEM_SIZE;
+ }
+ }
+
+ if (nr_parts > 0) {
+ for (i = 0; i < nr_parts; i++) {
+ DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
+ "{.name = %s, .offset = 0x%.8llx, "
+ ".size = 0x%.8llx (%lluKiB) }\n",
+ i, parts[i].name,
+ parts[i].offset,
+ parts[i].size,
+ parts[i].size / 1024);
+ }
+ flash->partitioned = 1;
+ return add_mtd_partitions(&flash->mtd, parts, nr_parts);
+ }
+ } else if (data->nr_parts)
+ dev_warn(&spi->dev, "ignoring %d default partitions on %s\n",
+ data->nr_parts, data->name);
+
+ return add_mtd_device(&flash->mtd) == 1 ? -ENODEV : 0;
+}
+
+
+static int __devexit ubicom32_flash_remove(struct spi_device *spi)
+{
+ struct m25p *flash = dev_get_drvdata(&spi->dev);
+ int status;
+
+ /* Clean up MTD stuff. */
+ if (mtd_has_partitions() && flash->partitioned)
+ status = del_mtd_partitions(&flash->mtd);
+ else
+ status = del_mtd_device(&flash->mtd);
+ if (status == 0)
+ kfree(flash);
+ return 0;
+}
+
+static struct platform_driver ubicom32_flash_driver = {
+ .driver = {
+ .name = "ubicom32flashdriver",
+ .bus = &platform_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = ubicom32_flash_probe,
+ .remove = NULL,
+};
+
+static int ubicom32_flash_driver_init(void)
+{
+ return platform_driver_register(&ubicom32_flash_driver);
+}
+
+
+static void ubicom32_flash_driver_exit(void)
+{
+ platform_driver_unregister(&ubicom32_flash_driver);
+}
+
+
+module_init(ubicom32_flash_driver_init);
+module_exit(ubicom32_flash_driver_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mike Lavender");
+MODULE_DESCRIPTION("Ubicom32 MTD SPI driver for ST M25Pxx flash chips");
diff --git a/target/linux/ubicom32/files/drivers/mtd/devices/ubi32-nand-spi-er.c b/target/linux/ubicom32/files/drivers/mtd/devices/ubi32-nand-spi-er.c
new file mode 100644
index 0000000..897bed7
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/mtd/devices/ubi32-nand-spi-er.c
@@ -0,0 +1,1188 @@
+/*
+ * Micron SPI-ER NAND Flash Memory
+ * This code uses the built in Ubicom flash controller
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+*/
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#define DRIVER_NAME "ubi32-nand-spi-er"
+#define UBI32_NAND_SPI_ER_BLOCK_FROM_ROW(row) (row >> 6)
+
+#define UBI32_NAND_SPI_ER_STATUS_P_FAIL (1 << 3)
+#define UBI32_NAND_SPI_ER_STATUS_E_FAIL (1 << 2)
+#define UBI32_NAND_SPI_ER_STATUS_OIP (1 << 0)
+
+#define UBI32_NAND_SPI_ER_LAST_ROW_INVALID 0xFFFFFFFF
+#define UBI32_NAND_SPI_ER_BAD_BLOCK_MARK_OFFSET 0x08
+
+struct ubi32_nand_spi_er_device {
+ const char *name;
+
+ uint16_t id;
+
+ unsigned int blocks;
+ unsigned int pages_per_block;
+ unsigned int page_size;
+ unsigned int write_size;
+ unsigned int erase_size;
+};
+
+struct ubi32_nand_spi_er {
+ char name[24];
+
+ const struct ubi32_nand_spi_er_device *device;
+
+ struct mutex lock;
+ struct platform_device *pdev;
+
+ struct mtd_info mtd;
+
+ unsigned int last_row; /* the last row we fetched */
+
+ /*
+ * Bad block table (MUST be last in strcuture)
+ */
+ unsigned long nbb;
+ unsigned long bbt[0];
+};
+
+/*
+ * Chip supports a write_size of 512, but we cannot do partial
+ * page with command 0x84.
+ *
+ * We need to use command 0x84 because we cannot fill the FIFO fast
+ * enough to transfer the whole 512 bytes at a time. (maybe through
+ * OCM?)
+ */
+const struct ubi32_nand_spi_er_device ubi32_nand_spi_er_devices[] = {
+ {
+ name: "MT29F1G01ZDC",
+ id: 0x2C12,
+ blocks: 1024,
+ pages_per_block: 64,
+ page_size: 2048,
+ write_size: 2048,
+ erase_size: 64 * 2048,
+ },
+ {
+ name: "MT29F1G01ZDC",
+ id: 0x2C13,
+ blocks: 1024,
+ pages_per_block: 64,
+ page_size: 2048,
+ write_size: 2048,
+ erase_size: 64 * 2048,
+ },
+};
+
+static int read_only = 0;
+module_param(read_only, int, 0);
+MODULE_PARM_DESC(read_only, "Leave device locked");
+
+/*
+ * Ubicom32 FLASH Command Set
+ */
+#define FLASH_PORT RA
+
+#define FLASH_FC_INST_CMD 0x00 /* for SPI command only transaction */
+#define FLASH_FC_INST_WR 0x01 /* for SPI write transaction */
+#define FLASH_FC_INST_RD 0x02 /* for SPI read transaction */
+
+#define FLASH_COMMAND_KICK_OFF(io) \
+ asm volatile( \
+ " bset "D(IO_INT_CLR)"(%0), #0, #%%bit("D(IO_XFL_INT_DONE)") \n\t" \
+ " jmpt.t .+4 \n\t" \
+ " bset "D(IO_INT_SET)"(%0), #0, #%%bit("D(IO_XFL_INT_START)") \n\t" \
+ : \
+ : "a" (io) \
+ : "cc" \
+ );
+
+#define FLASH_COMMAND_WAIT_FOR_COMPLETION(io) \
+ asm volatile( \
+ " btst "D(IO_INT_STATUS)"(%0), #%%bit("D(IO_XFL_INT_DONE)") \n\t" \
+ " jmpeq.f .-4 \n\t" \
+ : \
+ : "a" (io) \
+ : "cc" \
+ );
+
+#define FLASH_COMMAND_EXEC(io) \
+ FLASH_COMMAND_KICK_OFF(io) \
+ FLASH_COMMAND_WAIT_FOR_COMPLETION(io)
+
+/*
+ * ubi32_nand_spi_er_get_feature
+ * Get Feature register
+ */
+static uint8_t ubi32_nand_spi_er_get_feature(uint32_t reg)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ /*
+ * Note that this will produce the sequence:
+ * SI [0F][REG][00][00]
+ * SO ---------[SR][SR][SR]
+ * Since the flash controller can only output 24 bits of address, this is
+ * ok for this command since the data will just repeat as long as the CS
+ * is asserted and the clock is running.
+ */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) | IO_XFL_CTL1_FC_DATA(1) |
+ IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x0F) | IO_XFL_CTL2_FC_ADDR(reg << 16);
+ FLASH_COMMAND_EXEC(io);
+
+ return io->status1 & 0xFF;
+}
+
+/*
+ * ubi32_nand_spi_er_write_buf
+ * writes a buffer to the bus
+ *
+ * Writes 511 + 1 bytes to the bus, we have to stuff one data byte into the address.
+ */
+static void ubi32_nand_spi_er_write_buf(const uint8_t *buf, uint32_t col)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+ uint32_t tmp;
+
+ asm volatile (
+ " bset "D(IO_INT_SET)"(%[port]), #0, #%%bit("D(IO_PORTX_INT_FIFO_TX_RESET)") \n\t"
+ " pipe_flush 0 \n\t"
+ :
+ : [port] "a" (FLASH_PORT)
+ : "cc"
+ );
+
+ /*
+ * Write the data into the cache
+ */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+#ifdef SUPPORT_512_FIFO
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_WR) | IO_XFL_CTL1_FC_DATA(511) |
+#endif
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_WR) | IO_XFL_CTL1_FC_DATA(31) |
+ IO_XFL_CTL1_FC_ADDR;
+
+ /*
+ * Construct the address with the first byte of data
+ */
+ tmp = (col << 8) | *buf++;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x84) | IO_XFL_CTL2_FC_ADDR(tmp);
+
+ asm volatile (
+
+ /*
+ * Move 32 bytes
+ *
+ * The first word needs to be [11][22][33][33] to work around a flash
+ * controller bug.
+ */
+ " move.2 %[tmp], (%[data])2++ \n\t"
+ " shmrg.1 %[tmp], (%[data]), %[tmp] \n\t"
+ " shmrg.1 %[tmp], (%[data])1++, %[tmp] \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), %[tmp] \n\t"
+
+ /*
+ * We're aligned again!
+ */
+ " .rept 7 \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), (%[data])4++ \n\t"
+ " .endr \n\t"
+
+ /*
+ * Kick off the flash command
+ */
+ " bset "D(IO_INT_CLR)"(%[port]), #0, #%%bit("D(IO_XFL_INT_DONE)") \n\t"
+ " jmpt.t .+4 \n\t"
+ " bset "D(IO_INT_SET)"(%[port]), #0, #%%bit("D(IO_XFL_INT_START)") \n\t"
+
+#ifdef SUPPORT_512_FIFO
+ /*
+ * Fill the remaining 120 words as space becomes available
+ */
+ "1: \n\t"
+ " cmpi "D(IO_FIFO_LEVEL)"(%[port]), #4 \n\t"
+ " jmpgt.s.t 1b \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), (%[data])4++ \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), (%[data])4++ \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), (%[data])4++ \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), (%[data])4++ \n\t"
+ " add.4 %[cnt], #-4, %[cnt] \n\t"
+ " jmpgt.t 1b \n\t"
+#endif
+ /*
+ * Wait for the transaction to finish
+ */
+ " btst "D(IO_INT_STATUS)"(%[port]), #%%bit("D(IO_XFL_INT_DONE)") \n\t"
+ " jmpeq.f .-4 \n\t"
+
+ : [tmp] "=&d" (tmp),
+ [data] "+&a" (buf)
+ : [column] "d" (col),
+ [port] "a" (FLASH_PORT),
+ [cnt] "d" (120) // see above comment
+ : "cc"
+ );
+}
+
+/*
+ * ubi32_nand_spi_er_send_rd_addr
+ * perform FC_RD: CMD + address
+ */
+static void ubi32_nand_spi_er_send_rd_addr(uint8_t command, uint32_t address)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) | IO_XFL_CTL1_FC_DATA(4) |
+ IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(command) | IO_XFL_CTL2_FC_ADDR(address);
+ FLASH_COMMAND_EXEC(io);
+}
+
+/*
+ * ubi32_nand_spi_er_send_cmd_addr
+ * perform FC_(xxx): CMD + address
+ */
+static void ubi32_nand_spi_er_send_cmd_addr(uint8_t command, uint32_t address)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD) | IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(command) | IO_XFL_CTL2_FC_ADDR(address);
+ FLASH_COMMAND_EXEC(io);
+}
+
+/*
+ * ubi32_nand_spi_er_write_disable
+ * clear the write enable bit
+ */
+static void ubi32_nand_spi_er_write_disable(void)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x04);
+ FLASH_COMMAND_EXEC(io);
+}
+
+/*
+ * ubi32_nand_spi_er_write_enable
+ * set the write enable bit
+ */
+static void ubi32_nand_spi_er_write_enable(void)
+{
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x06);
+ FLASH_COMMAND_EXEC(io);
+}
+
+/*
+ * ubi32_nand_spi_er_busywait
+ * Wait until the chip is not busy
+ */
+static uint8_t ubi32_nand_spi_er_busywait(void)
+{
+ int i;
+ uint8_t data;
+
+ /*
+ * tRD is 100us, so don't delay too long, however, tERS is
+ * 10ms so you'd better loop enough.
+ */
+ for (i = 0; i < 200; i++) {
+ data = ubi32_nand_spi_er_get_feature(0xC0);
+ if (!(data & UBI32_NAND_SPI_ER_STATUS_OIP)) {
+ break;
+ }
+
+ udelay(50);
+ }
+
+ return data;
+}
+
+/*
+ * ubi32_nand_spi_er_erase
+ * Erase a block, parameters must be block aligned
+ */
+static int ubi32_nand_spi_er_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+ struct ubi32_nand_spi_er *chip = mtd->priv;
+ int res;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: erase addr:%x len:%x\n", chip->name, instr->addr, instr->len);
+
+ if ((instr->addr + instr->len) > mtd->size) {
+ return -EINVAL;
+ }
+
+ if (instr->addr & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: erase address is not aligned %x\n", chip->name, instr->addr);
+ return -EINVAL;
+ }
+
+ if (instr->len & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: erase len is not aligned %x\n", chip->name, instr->len);
+ return -EINVAL;
+ }
+
+ mutex_lock(&chip->lock);
+ chip->last_row = UBI32_NAND_SPI_ER_LAST_ROW_INVALID;
+
+ while (instr->len) {
+ uint32_t block = instr->addr >> 17;
+ uint32_t row = block << 6;
+ uint8_t stat;
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: block erase row:%x block:%x addr:%x rem:%x\n", chip->name, row, block, instr->addr, instr->len);
+
+ /*
+ * Test for bad block
+ */
+ if (test_bit(block, chip->bbt)) {
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ res = -EBADMSG;
+ goto done;
+ }
+
+ ubi32_nand_spi_er_write_enable();
+
+ /*
+ * Block erase
+ */
+ ubi32_nand_spi_er_send_cmd_addr(0xD8, row);
+
+ /*
+ * Wait
+ */
+ stat = ubi32_nand_spi_er_busywait();
+ if (stat & UBI32_NAND_SPI_ER_STATUS_OIP) {
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive stat=%02x\n", chip->name, stat);
+
+ /*
+ * Chip is stuck?
+ */
+ res = -EIO;
+ goto done;
+ }
+
+ /*
+ * Check the status register
+ */
+ if (stat & UBI32_NAND_SPI_ER_STATUS_E_FAIL) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: E_FAIL signalled (%02x)\n", chip->name, stat);
+ instr->fail_addr = block << 17;
+ instr->state = MTD_ERASE_FAILED;
+ goto done;
+ }
+
+ /*
+ * Next
+ */
+ block++;
+ instr->len -= chip->device->erase_size;
+ instr->addr += chip->device->erase_size;
+ }
+
+ instr->state = MTD_ERASE_DONE;
+
+ mutex_unlock(&chip->lock);
+ return 0;
+
+done:
+ ubi32_nand_spi_er_write_disable();
+
+ mutex_unlock(&chip->lock);
+
+ mtd_erase_callback(instr);
+ return 0;
+}
+
+/*
+ * ubi32_nand_spi_er_read
+ *
+ * return -EUCLEAN: ecc error recovered
+ * return -EBADMSG: ecc error not recovered
+*/
+static int ubi32_nand_spi_er_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf)
+{
+ struct ubi32_nand_spi_er *chip = mtd->priv;
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ uint32_t row;
+ uint32_t column;
+ int retval = 0;
+ uint32_t *pbuf = (uint32_t *)buf;
+
+ *retlen = 0;
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: read block from %llx len %d into %p\n", chip->name, from, len, buf);
+
+ /*
+ * buf should be aligned
+ */
+ if ((uint32_t)buf & 0x03) {
+ return -EINVAL;
+ }
+
+ /*
+ * Zero length reads, nothing to do
+ */
+ if (len == 0) {
+ return 0;
+ }
+
+ /*
+ * Reject reads which go over the end of the flash
+ */
+ if ((from + len) > mtd->size) {
+ return -EINVAL;
+ }
+
+ /*
+ * Get the row and column address to start at
+ */
+ row = from >> 11;
+ column = from & 0x7FF;
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: row=%x %d column=%x %d last_row=%x %d\n", chip->name, row, row, column, column, chip->last_row, chip->last_row);
+
+ /*
+ * Read the data from the chip
+ */
+ mutex_lock(&chip->lock);
+ while (len) {
+ uint8_t stat;
+ size_t toread;
+ int i;
+ int tmp;
+
+ /*
+ * Figure out how much to read
+ *
+ * If we are reading from the middle of a page then the most we
+ * can read is to the end of the page
+ */
+ toread = len;
+ if (toread > (chip->device->page_size - column)) {
+ toread = chip->device->page_size - column;
+ }
+
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: buf=%p toread=%x row=%x column=%x last_row=%x\n", chip->name, pbuf, toread, row, column, chip->last_row);
+
+ if (chip->last_row != row) {
+ /*
+ * Check if the block is bad
+ */
+ if (test_bit(UBI32_NAND_SPI_ER_BLOCK_FROM_ROW(row), chip->bbt)) {
+ mutex_unlock(&chip->lock);
+ return -EBADMSG;
+ }
+
+ /*
+ * Load the appropriate page
+ */
+ ubi32_nand_spi_er_send_cmd_addr(0x13, row);
+
+ /*
+ * Wait
+ */
+ stat = ubi32_nand_spi_er_busywait();
+ if (stat & UBI32_NAND_SPI_ER_STATUS_OIP) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive stat=%02x\n", chip->name, stat);
+
+ /*
+ * Chip is stuck?
+ */
+ mutex_unlock(&chip->lock);
+ return -EIO;
+ }
+
+ /*
+ * Check the ECC bits
+ */
+ stat >>= 4;
+ if (stat == 1) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: ECC recovered, row=%x\n", chip->name, row);
+ retval = -EUCLEAN;
+ }
+ if (stat == 2) {
+ DEBUG(MTD_DEBUG_LEVEL0, "%s: failed ECC, row=%x\n", chip->name, row);
+ chip->last_row = UBI32_NAND_SPI_ER_LAST_ROW_INVALID;
+ mutex_unlock(&chip->lock);
+ return -EBADMSG;
+ }
+
+ }
+
+ chip->last_row = row;
+
+ /*
+ * Read out the data:
+ * We can always read a little too much since there is the
+ * OOB after byte addr 2047. The most we'll overread is 3 bytes.
+ */
+ if (((uint32_t)pbuf & 0x03) == 0) {
+ /*
+ * Aligned read
+ */
+ tmp = toread & (~0x03);
+ for (i = 0; i < tmp; i += 4) {
+ ubi32_nand_spi_er_send_rd_addr(0x03, column << 8);
+ *pbuf++ = io->status1;
+ column += 4;
+ }
+ } else {
+ /*
+ * Unaligned read
+ */
+ tmp = toread & (~0x03);
+ for (i = 0; i < tmp; i += 4) {
+ ubi32_nand_spi_er_send_rd_addr(0x03, column << 8);
+ memcpy(pbuf, &io->status1, 4);
+ column += 4;
+ }
+ }
+
+ /*
+ * Fill in any single bytes
+ */
+ tmp = toread & 0x03;
+ if (tmp) {
+ uint8_t *bbuf = pbuf;
+ uint32_t val;
+ ubi32_nand_spi_er_send_rd_addr(0x03, column << 8);
+ val = io->status1;
+ for (i = 0; i < tmp; i++) {
+ *bbuf++ = val >> 24;
+ val <<= 8;
+ }
+ }
+
+ len -= toread;
+ *retlen += toread;
+
+ /*
+ * For the next page, increment the row and always start at column 0
+ */
+ column = 0;
+ row++;
+ }
+
+ mutex_unlock(&chip->lock);
+ return retval;
+}
+
+/*
+ * ubi32_nand_spi_er_write
+ */
+#define WRITE_NOT_ALIGNED(x) ((x & (device->write_size - 1)) != 0)
+static int ubi32_nand_spi_er_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf)
+{
+ struct ubi32_nand_spi_er *chip = mtd->priv;
+ const struct ubi32_nand_spi_er_device *device = chip->device;
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+ uint32_t row;
+ uint32_t col;
+ int res = 0;
+ size_t towrite;
+
+ DEBUG(MTD_DEBUG_LEVEL2, "%s: write block to %llx len %d from %p\n", chip->name, to, len, buf);
+
+ *retlen = 0;
+
+ /*
+ * nothing to write
+ */
+ if (!len) {
+ return 0;
+ }
+
+ /*
+ * Reject writes which go over the end of the flash
+ */
+ if ((to + len) > mtd->size) {
+ return -EINVAL;
+ }
+
+ /*
+ * buf should be aligned to 16 bits
+ */
+ if ((uint32_t)buf & 0x01) {
+ return -EINVAL;
+ }
+
+ /*
+ * Check to see if everything is page aligned
+ */
+ if (WRITE_NOT_ALIGNED(to) || WRITE_NOT_ALIGNED(len)) {
+ printk(KERN_NOTICE "ubi32_nand_spi_er_write: Attempt to write non page aligned data\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&chip->lock);
+
+ io->ctl0 |= IO_XFL_CTL0_MCB_LOCK;
+
+ chip->last_row = UBI32_NAND_SPI_ER_LAST_ROW_INVALID;
+
+ /*
+ * If the first write is a partial write then write at most the number of
+ * bytes to get us page aligned and then the remainder will be
+ * page aligned. The last bit may be a partial page as well.
+ */
+ col = to & (device->page_size - 1);
+ towrite = device->page_size - col;
+ if (towrite > len) {
+ towrite = len;
+ }
+
+ /*
+ * Write the data
+ */
+ row = to >> 11;
+ while (len) {
+ uint8_t stat;
+ uint32_t my_towrite;
+
+ DEBUG(MTD_DEBUG_LEVEL3, "%s: write %p to row:%x col:%x len:%x rem:%x\n", chip->name, buf, row, col, towrite, len);
+
+ ubi32_nand_spi_er_write_enable();
+
+ /*
+ * Move the data into the cache
+ */
+ my_towrite = towrite;
+ while (my_towrite) {
+ uint32_t len = my_towrite;
+ if (len > 32) {
+ len = 32;
+ }
+
+ ubi32_nand_spi_er_write_buf(buf, col);
+ buf += len;
+ col += len;
+ my_towrite -= len;
+ }
+
+ /*
+ * Program execute
+ */
+ ubi32_nand_spi_er_send_cmd_addr(0x10, row);
+
+ /*
+ * Wait
+ */
+ stat = ubi32_nand_spi_er_busywait();
+ if (stat & UBI32_NAND_SPI_ER_STATUS_OIP) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive stat=%02x\n", chip->name, stat);
+
+ /*
+ * Chip is stuck?
+ */
+ res = -EIO;
+ goto done;
+ }
+
+ if (stat & (1 << 3)) {
+ res = -EBADMSG;
+ goto done;
+ }
+
+ row++;
+ len -= towrite;
+ *retlen += towrite;
+
+ /*
+ * At this point, we are always page aligned so start at column 0.
+ * Note we may not have a full page to write at the end, hence the
+ * check if towrite > len.
+ */
+ col = 0;
+ towrite = device->page_size;
+ if (towrite > len) {
+ towrite = len;
+ }
+ }
+
+ io->ctl0 &= ~IO_XFL_CTL0_MCB_LOCK;
+
+ mutex_unlock(&chip->lock);
+ return res;
+
+done:
+ ubi32_nand_spi_er_write_disable();
+
+ io->ctl0 &= ~IO_XFL_CTL0_MCB_LOCK;
+
+ mutex_unlock(&chip->lock);
+
+ return res;
+}
+
+/*
+ * ubi32_nand_spi_er_isbad
+ */
+static int ubi32_nand_spi_er_isbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct ubi32_nand_spi_er *chip = mtd->priv;
+ uint32_t block;
+
+ if (ofs & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: address not aligned %llx\n", chip->name, ofs);
+ return -EINVAL;
+ }
+
+ block = ofs >> 17;
+
+ return test_bit(block, chip->bbt);
+}
+
+/*
+ * ubi32_nand_spi_er_markbad
+ */
+static int ubi32_nand_spi_er_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct ubi32_nand_spi_er *chip = mtd->priv;
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+ uint32_t block;
+ uint32_t row;
+ int res = 0;
+ uint8_t stat;
+
+ if (ofs & (chip->device->erase_size - 1)) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: address not aligned %llx\n", chip->name, ofs);
+ return -EINVAL;
+ }
+
+ block = ofs >> 17;
+
+ /*
+ * If it's already marked bad, no need to mark it
+ */
+ if (test_bit(block, chip->bbt)) {
+ return 0;
+ }
+
+ /*
+ * Mark it in our cache
+ */
+ __set_bit(block, chip->bbt);
+
+ /*
+ * Write the user bad block mark. If it fails, then we really
+ * can't do anything about it.
+ */
+ mutex_lock(&chip->lock);
+ chip->last_row = UBI32_NAND_SPI_ER_LAST_ROW_INVALID;
+
+ ubi32_nand_spi_er_write_enable();
+
+ /*
+ * Write the mark
+ */
+ io->ctl0 |= IO_XFL_CTL0_MCB_LOCK;
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_WR) | IO_XFL_CTL1_FC_DATA(6);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x84);
+
+ asm volatile (
+ " bset "D(IO_INT_SET)"(%[port]), #0, #%%bit("D(IO_PORTX_INT_FIFO_TX_RESET)") \n\t"
+ " pipe_flush 0 \n\t"
+
+ /*
+ * Move the data into the FIFO
+ */
+ " move.4 "D(IO_TX_FIFO)"(%[port]), %[word1] \n\t"
+ " move.4 "D(IO_TX_FIFO)"(%[port]), %[word2] \n\t"
+
+ /*
+ * Kick off the flash command
+ */
+ " bset "D(IO_INT_CLR)"(%[port]), #0, #%%bit("D(IO_XFL_INT_DONE)") \n\t"
+ " jmpt.t .+4 \n\t"
+ " bset "D(IO_INT_SET)"(%[port]), #0, #%%bit("D(IO_XFL_INT_START)") \n\t"
+
+ /*
+ * Wait for the transaction to finish
+ */
+ " btst "D(IO_INT_STATUS)"(%[port]), #%%bit("D(IO_XFL_INT_DONE)") \n\t"
+ " jmpeq.f .-4 \n\t"
+
+ :
+ : [word1] "d" (0x0800dead | (UBI32_NAND_SPI_ER_BAD_BLOCK_MARK_OFFSET << 16)),
+ [word2] "d" (0xbeef0000),
+ [port] "a" (FLASH_PORT)
+ : "cc"
+ );
+
+ io->ctl0 &= ~IO_XFL_CTL0_MCB_LOCK;
+
+ /*
+ * Program execute
+ */
+ row = block << 6;
+ ubi32_nand_spi_er_send_cmd_addr(0x10, row);
+
+ /*
+ * Wait
+ */
+ stat = ubi32_nand_spi_er_busywait();
+ if (stat & UBI32_NAND_SPI_ER_STATUS_OIP) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive stat=%02x\n", chip->name, stat);
+
+ /*
+ * Chip is stuck?
+ */
+ res = -EIO;
+ goto done;
+ }
+
+ if (stat & (1 << 3)) {
+ res = -EBADMSG;
+ }
+
+done:
+ ubi32_nand_spi_er_write_disable();
+
+ mutex_unlock(&chip->lock);
+
+ return res;
+}
+
+/*
+ * ubi32_nand_spi_er_read_bbt
+ */
+static int ubi32_nand_spi_er_read_bbt(struct ubi32_nand_spi_er *chip)
+{
+ int j;
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ for (j = 0; j < chip->device->blocks; j++) {
+ unsigned short row = j << 6;
+ uint8_t stat;
+
+ /*
+ * Read Page
+ */
+ ubi32_nand_spi_er_send_cmd_addr(0x13, row);
+
+ /*
+ * Wait
+ */
+ stat = ubi32_nand_spi_er_busywait();
+ if (stat & UBI32_NAND_SPI_ER_STATUS_OIP) {
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: chip is busy or nonresponsive stat=%02x\n", chip->name, stat);
+
+ /*
+ * Chip is stuck?
+ */
+ return -EIO;
+ }
+
+ /*
+ * Check factory bad block mark
+ */
+ ubi32_nand_spi_er_send_rd_addr(0x03, 0x080000);
+
+ if ((io->status1 >> 24) != 0xFF) {
+ chip->nbb++;
+ __set_bit(j, chip->bbt);
+ continue;
+ }
+
+ ubi32_nand_spi_er_send_rd_addr(0x03, 0x080000 | (UBI32_NAND_SPI_ER_BAD_BLOCK_MARK_OFFSET << 8));
+ if (io->status1 == 0xdeadbeef) {
+ chip->nbb++;
+ __set_bit(j, chip->bbt);
+ }
+ }
+
+#if defined(CONFIG_MTD_DEBUG) && (MTD_DEBUG_LEVEL3 <= CONFIG_MTD_DEBUG_VERBOSE)
+ printk("%s: Bad Block Table:", chip->name);
+ for (j = 0; j < chip->device->blocks; j++) {
+ if ((j % 64) == 0) {
+ printk("\n%s: block %03x: ", chip->name, j);
+ }
+ printk("%c", test_bit(j, chip->bbt) ? 'X' : '.');
+ }
+ printk("\n%s: Bad Block Numbers: ", chip->name);
+ for (j = 0; j < chip->device->blocks; j++) {
+ if (test_bit(j, chip->bbt)) {
+ printk("%x ", j);
+ }
+ }
+ printk("\n");
+#endif
+
+ return 0;
+}
+
+#ifndef MODULE
+/*
+ * Called at boot time:
+ *
+ * ubi32_nand_spi_er=read_only
+ * if read_only specified then do not unlock device
+ */
+static int __init ubi32_nand_spi_er_setup(char *str)
+{
+ if (str && (strncasecmp(str, "read_only", 9) == 0)) {
+ read_only = 1;
+ }
+ return 0;
+}
+
+__setup("ubi32_nand_spi_er=", ubi32_nand_spi_er_setup);
+#endif
+
+/*
+ * ubi32_nand_spi_er_probe
+ * Detect and initialize ubi32_nand_spi_er device.
+ */
+static int __devinit ubi32_nand_spi_er_probe(struct platform_device *pdev)
+{
+ uint32_t i;
+ uint32_t id;
+ int res;
+ size_t bbt_bytes;
+ struct ubi32_nand_spi_er *chip;
+ const struct ubi32_nand_spi_er_device *device;
+ struct ubicom32_io_port *io = (struct ubicom32_io_port *)FLASH_PORT;
+
+ /*
+ * Reset
+ */
+ for (i = 0; i < 2; i++) {
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_CMD);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0xFF);
+ FLASH_COMMAND_EXEC(io);
+ udelay(250);
+ }
+ udelay(1000);
+
+ /*
+ * Read out ID
+ */
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_RD) | IO_XFL_CTL1_FC_DATA(2) |
+ IO_XFL_CTL1_FC_ADDR;
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x9F);
+ FLASH_COMMAND_EXEC(io);
+
+ id = io->status1 >> 16;
+ device = ubi32_nand_spi_er_devices;
+ for (i = 0; i < ARRAY_SIZE(ubi32_nand_spi_er_devices); i++) {
+ if (device->id == id) {
+ break;
+ }
+ device++;
+ }
+ if (i == ARRAY_SIZE(ubi32_nand_spi_er_devices)) {
+ return -ENODEV;
+ }
+
+ /*
+ * Initialize our chip structure
+ */
+ bbt_bytes = DIV_ROUND_UP(device->blocks, BITS_PER_BYTE);
+ chip = kzalloc(sizeof(struct ubi32_nand_spi_er) + bbt_bytes, GFP_KERNEL);
+ if (!chip) {
+ return -ENOMEM;
+ }
+ snprintf(chip->name, sizeof(chip->name), "%s", device->name);
+
+ chip->device = device;
+ chip->last_row = UBI32_NAND_SPI_ER_LAST_ROW_INVALID;
+
+ mutex_init(&chip->lock);
+
+ chip->mtd.type = MTD_NANDFLASH;
+ chip->mtd.flags = MTD_WRITEABLE;
+
+ /*
+ * #blocks * block size * n blocks
+ */
+ chip->mtd.size = device->blocks * device->pages_per_block * device->page_size;
+ chip->mtd.erasesize = device->erase_size;
+
+ /*
+ * 1 page, optionally we can support partial write (512)
+ */
+ chip->mtd.writesize = device->write_size;
+ chip->mtd.name = device->name;
+ chip->mtd.erase = ubi32_nand_spi_er_erase;
+ chip->mtd.read = ubi32_nand_spi_er_read;
+ chip->mtd.write = ubi32_nand_spi_er_write;
+ chip->mtd.block_isbad = ubi32_nand_spi_er_isbad;
+ chip->mtd.block_markbad = ubi32_nand_spi_er_markbad;
+ chip->mtd.priv = chip;
+
+ /*
+ * Cache the bad block table
+ */
+ res = ubi32_nand_spi_er_read_bbt(chip);
+ if (res) {
+ kfree(chip);
+ return res;
+ }
+
+ /*
+ * Un/lock the chip
+ */
+ io->ctl0 |= IO_XFL_CTL0_MCB_LOCK;
+ io->ctl1 &= ~IO_XFL_CTL1_MASK;
+ io->ctl1 |= IO_XFL_CTL1_FC_INST(FLASH_FC_INST_WR) | IO_XFL_CTL1_FC_DATA(2);
+ io->ctl2 = IO_XFL_CTL2_FC_CMD(0x1F);
+
+ if (read_only) {
+ i = 0xa0380000;
+ } else {
+ i = 0xa0000000;
+ }
+ asm volatile (
+ " bset "D(IO_INT_SET)"(%[port]), #0, #%%bit("D(IO_PORTX_INT_FIFO_TX_RESET)") \n\t"
+ " pipe_flush 0 \n\t"
+
+ /*
+ * Move the data into the FIFO
+ */
+ " move.4 "D(IO_TX_FIFO)"(%[port]), %[word1] \n\t"
+
+ /*
+ * Kick off the flash command
+ */
+ " bset "D(IO_INT_CLR)"(%[port]), #0, #%%bit("D(IO_XFL_INT_DONE)") \n\t"
+ " jmpt.t .+4 \n\t"
+ " bset "D(IO_INT_SET)"(%[port]), #0, #%%bit("D(IO_XFL_INT_START)") \n\t"
+
+ /*
+ * Wait for the transaction to finish
+ */
+ " btst "D(IO_INT_STATUS)"(%[port]), #%%bit("D(IO_XFL_INT_DONE)") \n\t"
+ " jmpeq.f .-4 \n\t"
+
+ :
+ : [word1] "d" (i),
+ [port] "a" (FLASH_PORT)
+ : "cc"
+ );
+ io->ctl0 &= ~IO_XFL_CTL0_MCB_LOCK;
+
+ dev_set_drvdata(&pdev->dev, chip);
+
+ printk(KERN_INFO "%s: added device size: %u KBytes %lu bad blocks %s\n", chip->mtd.name, DIV_ROUND_UP(chip->mtd.size, 1024), chip->nbb, read_only ? "[read only]" : "");
+ return add_mtd_device(&chip->mtd);
+}
+
+/*
+ * ubi32_nand_spi_er_remove
+ */
+static int __devexit ubi32_nand_spi_er_remove(struct platform_device *pdev)
+{
+ struct ubi32_nand_spi_er *chip = dev_get_drvdata(&pdev->dev);
+ int status;
+
+ DEBUG(MTD_DEBUG_LEVEL1, "%s: remove\n", chip->name);
+
+ status = del_mtd_device(&chip->mtd);
+ if (status == 0) {
+ kfree(chip);
+ }
+
+ dev_set_drvdata(&pdev->dev, NULL);
+ return status;
+}
+
+static struct platform_device *ubi32_nand_spi_er_device;
+
+static struct platform_driver ubi32_nand_spi_er_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = ubi32_nand_spi_er_probe,
+ .remove = ubi32_nand_spi_er_remove,
+};
+
+/*
+ * ubi32_nand_spi_er_init
+ */
+static int __init ubi32_nand_spi_er_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&ubi32_nand_spi_er_driver);
+
+ if (ret) {
+ return ret;
+ }
+
+ ubi32_nand_spi_er_device = platform_device_alloc(DRIVER_NAME, 0);
+ if (!ubi32_nand_spi_er_device) {
+ return -ENOMEM;
+ }
+
+ ret = platform_device_add(ubi32_nand_spi_er_device);
+ if (ret) {
+ platform_device_put(ubi32_nand_spi_er_device);
+ platform_driver_unregister(&ubi32_nand_spi_er_driver);
+ }
+
+ return ret;
+}
+module_init(ubi32_nand_spi_er_init);
+
+/*
+ * ubi32_nand_spi_er_exit
+ */
+static void __exit ubi32_nand_spi_er_exit(void)
+{
+ platform_device_unregister(ubi32_nand_spi_er_device);
+ platform_driver_unregister(&ubi32_nand_spi_er_driver);
+}
+module_exit(ubi32_nand_spi_er_exit);
+
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Patrick Tjin");
+MODULE_DESCRIPTION("MTD ubi32_nand_spi_er driver for ubicom32 SPI flash controller.");
diff --git a/target/linux/ubicom32/files/drivers/net/ubi32-eth.c b/target/linux/ubicom32/files/drivers/net/ubi32-eth.c
new file mode 100644
index 0000000..e6c7392
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/net/ubi32-eth.c
@@ -0,0 +1,760 @@
+/*
+ * drivers/net/ubi32-eth.c
+ * Ubicom32 ethernet TIO interface driver.
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+/*
+ * ubi32_eth.c
+ * Ethernet driver for Ip5k/Ip7K
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+
+#include <linux/in.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/mii.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/skbuff.h>
+#include <asm/checksum.h>
+#include <asm/ip5000.h>
+#include <asm/devtree.h>
+#include <asm/system.h>
+
+#define UBICOM32_USE_NAPI /* define this to use NAPI instead of tasklet */
+//#define UBICOM32_USE_POLLING /* define this to use polling instead of interrupt */
+#include "ubi32-eth.h"
+
+/*
+ * TODO:
+ * mac address from flash
+ * multicast filter
+ * ethtool support
+ * sysfs support
+ * skb->nrfrag support
+ * ioctl
+ * monitor phy status
+ */
+
+extern int ubi32_ocm_skbuf_max, ubi32_ocm_skbuf, ubi32_ddr_skbuf;
+static const char *eth_if_name[UBI32_ETH_NUM_OF_DEVICES] =
+ {"eth_lan", "eth_wan"};
+static struct net_device *ubi32_eth_devices[UBI32_ETH_NUM_OF_DEVICES] =
+ {NULL, NULL};
+static u8_t mac_addr[UBI32_ETH_NUM_OF_DEVICES][ETH_ALEN] = {
+ {0x00, 0x03, 0x64, 'l', 'a', 'n'},
+ {0x00, 0x03, 0x64, 'w', 'a', 'n'}};
+
+#if (defined(CONFIG_ZONE_DMA) && defined(CONFIG_UBICOM32_OCM_FOR_SKB))
+static inline struct sk_buff *ubi32_alloc_skb_ocm(struct net_device *dev, unsigned int length)
+{
+ return __dev_alloc_skb(length, GFP_ATOMIC | __GFP_NOWARN | __GFP_NORETRY | GFP_DMA);
+}
+#endif
+
+static inline struct sk_buff *ubi32_alloc_skb(struct net_device *dev, unsigned int length)
+{
+ return __dev_alloc_skb(length, GFP_ATOMIC | __GFP_NOWARN);
+}
+
+static void ubi32_eth_vp_rxtx_enable(struct net_device *dev)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ priv->regs->command = UBI32_ETH_VP_CMD_RX_ENABLE | UBI32_ETH_VP_CMD_TX_ENABLE;
+ priv->regs->int_mask = (UBI32_ETH_VP_INT_RX | UBI32_ETH_VP_INT_TX);
+ ubicom32_set_interrupt(priv->vp_int_bit);
+}
+
+static void ubi32_eth_vp_rxtx_stop(struct net_device *dev)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ priv->regs->command = 0;
+ priv->regs->int_mask = 0;
+ ubicom32_set_interrupt(priv->vp_int_bit);
+
+ /* Wait for graceful shutdown */
+ while (priv->regs->status & (UBI32_ETH_VP_STATUS_RX_STATE | UBI32_ETH_VP_STATUS_TX_STATE));
+}
+
+/*
+ * ubi32_eth_tx_done()
+ */
+static int ubi32_eth_tx_done(struct net_device *dev)
+{
+ struct ubi32_eth_private *priv;
+ struct sk_buff *skb;
+ volatile void *pdata;
+ struct ubi32_eth_dma_desc *desc;
+ u32_t count = 0;
+
+ priv = netdev_priv(dev);
+
+ priv->regs->int_status &= ~UBI32_ETH_VP_INT_TX;
+ while (priv->tx_tail != priv->regs->tx_out) {
+ pdata = priv->regs->tx_dma_ring[priv->tx_tail];
+ BUG_ON(pdata == NULL);
+
+ skb = container_of((void *)pdata, struct sk_buff, cb);
+ desc = (struct ubi32_eth_dma_desc *)pdata;
+ if (unlikely(!(desc->status & UBI32_ETH_VP_TX_OK))) {
+ dev->stats.tx_errors++;
+ } else {
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+ }
+ dev_kfree_skb_any(skb);
+ priv->regs->tx_dma_ring[priv->tx_tail] = NULL;
+ priv->tx_tail = (priv->tx_tail + 1) & TX_DMA_RING_MASK;
+ count++;
+ }
+
+ if (unlikely(priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL)) {
+ spin_lock(&priv->lock);
+ if (priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL) {
+ priv->regs->status &= ~UBI32_ETH_VP_STATUS_TX_Q_FULL;
+ netif_wake_queue(dev);
+ }
+ spin_unlock(&priv->lock);
+ }
+ return count;
+}
+
+/*
+ * ubi32_eth_receive()
+ * To avoid locking overhead, this is called only
+ * by tasklet when not using NAPI, or
+ * by NAPI poll when using NAPI.
+ * return number of frames processed
+ */
+static int ubi32_eth_receive(struct net_device *dev, int quota)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ unsigned short rx_in = priv->regs->rx_in;
+ struct sk_buff *skb;
+ struct ubi32_eth_dma_desc *desc = NULL;
+ volatile void *pdata;
+
+ int extra_reserve_adj;
+ int extra_alloc = UBI32_ETH_RESERVE_SPACE + UBI32_ETH_TRASHED_MEMORY;
+ int replenish_cnt, count = 0;
+ int replenish_max = RX_DMA_MAX_QUEUE_SIZE;
+#if (defined(CONFIG_ZONE_DMA) && defined(CONFIG_UBICOM32_OCM_FOR_SKB))
+ if (likely(dev == ubi32_eth_devices[0]))
+ replenish_max = min(ubi32_ocm_skbuf_max, RX_DMA_MAX_QUEUE_SIZE);;
+#endif
+
+ if (unlikely(rx_in == priv->regs->rx_out))
+ priv->vp_stats.rx_q_full_cnt++;
+
+ priv->regs->int_status &= ~UBI32_ETH_VP_INT_RX;
+ while (priv->rx_tail != priv->regs->rx_out) {
+ if (unlikely(count == quota)) {
+ /* There is still frame pending to be processed */
+ priv->vp_stats.rx_throttle++;
+ break;
+ }
+
+ pdata = priv->regs->rx_dma_ring[priv->rx_tail];
+ BUG_ON(pdata == NULL);
+
+ desc = (struct ubi32_eth_dma_desc *)pdata;
+ skb = container_of((void *)pdata, struct sk_buff, cb);
+ count++;
+ priv->regs->rx_dma_ring[priv->rx_tail] = NULL;
+ priv->rx_tail = ((priv->rx_tail + 1) & RX_DMA_RING_MASK);
+
+ /*
+ * Check only RX_OK bit here.
+ * The rest of status word is used as timestamp
+ */
+ if (unlikely(!(desc->status & UBI32_ETH_VP_RX_OK))) {
+ dev->stats.rx_errors++;
+ dev_kfree_skb_any(skb);
+ continue;
+ }
+
+ skb_put(skb, desc->data_len);
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+ skb->ip_summed = CHECKSUM_NONE;
+ dev->stats.rx_bytes += skb->len;
+ dev->stats.rx_packets++;
+#ifndef UBICOM32_USE_NAPI
+ netif_rx(skb);
+#else
+ netif_receive_skb(skb);
+#endif
+ }
+
+ /* fill in more descripor for VP*/
+ replenish_cnt = replenish_max -
+ ((RX_DMA_RING_SIZE + rx_in - priv->rx_tail) & RX_DMA_RING_MASK);
+ if (replenish_cnt > 0) {
+#if (defined(CONFIG_ZONE_DMA) && defined(CONFIG_UBICOM32_OCM_FOR_SKB))
+ /*
+ * black magic for perforamnce:
+ * Try to allocate skb from OCM only for first Ethernet I/F.
+ * Also limit number of RX buffers to 21 due to limited OCM.
+ */
+ if (likely(dev == ubi32_eth_devices[0])) {
+ do {
+ skb = ubi32_alloc_skb_ocm(dev, RX_BUF_SIZE + extra_alloc);
+ if (!skb) {
+ break;
+ }
+ /* set up dma descriptor */
+ ubi32_ocm_skbuf++;
+ desc = (struct ubi32_eth_dma_desc *)skb->cb;
+ extra_reserve_adj =
+ ((u32)skb->data + UBI32_ETH_RESERVE_SPACE + ETH_HLEN) &
+ (CACHE_LINE_SIZE - 1);
+ skb_reserve(skb, UBI32_ETH_RESERVE_SPACE - extra_reserve_adj);
+ desc->data_pointer = skb->data;
+ desc->buffer_len = RX_BUF_SIZE + UBI32_ETH_TRASHED_MEMORY;
+ desc->data_len = 0;
+ desc->status = 0;
+ priv->regs->rx_dma_ring[rx_in] = desc;
+ rx_in = (rx_in + 1) & RX_DMA_RING_MASK;
+ } while (--replenish_cnt > 0);
+ }
+#endif
+
+ while (replenish_cnt-- > 0) {
+ skb = ubi32_alloc_skb(dev, RX_BUF_SIZE + extra_alloc);
+ if (!skb) {
+ priv->vp_stats.rx_alloc_err++;
+ break;
+ }
+ /* set up dma descriptor */
+ ubi32_ddr_skbuf++;
+ desc = (struct ubi32_eth_dma_desc *)skb->cb;
+ extra_reserve_adj =
+ ((u32)skb->data + UBI32_ETH_RESERVE_SPACE + ETH_HLEN) &
+ (CACHE_LINE_SIZE - 1);
+ skb_reserve(skb, UBI32_ETH_RESERVE_SPACE - extra_reserve_adj);
+ desc->data_pointer = skb->data;
+ desc->buffer_len = RX_BUF_SIZE + UBI32_ETH_TRASHED_MEMORY;
+ desc->data_len = 0;
+ desc->status = 0;
+ priv->regs->rx_dma_ring[rx_in] = desc;
+ rx_in = (rx_in + 1) & RX_DMA_RING_MASK;
+ }
+
+ wmb();
+ priv->regs->rx_in = rx_in;
+ ubicom32_set_interrupt(priv->vp_int_bit);
+ }
+
+ if (likely(count > 0)) {
+ dev->last_rx = jiffies;
+ }
+ return count;
+}
+
+#ifdef UBICOM32_USE_NAPI
+static int ubi32_eth_napi_poll(struct napi_struct *napi, int budget)
+{
+ struct ubi32_eth_private *priv = container_of(napi, struct ubi32_eth_private, napi);
+ struct net_device *dev = priv->dev;
+ u32_t count;
+
+ if (priv->tx_tail != priv->regs->tx_out) {
+ ubi32_eth_tx_done(dev);
+ }
+
+ count = ubi32_eth_receive(dev, budget);
+
+ if (count < budget) {
+ napi_complete(napi);
+ priv->regs->int_mask |= (UBI32_ETH_VP_INT_RX | UBI32_ETH_VP_INT_TX);
+ if ((priv->rx_tail != priv->regs->rx_out) || (priv->tx_tail != priv->regs->tx_out)) {
+ if (napi_reschedule(napi)) {
+ priv->regs->int_mask = 0;
+ }
+ }
+ }
+ return count;
+}
+
+#else
+static void ubi32_eth_do_tasklet(unsigned long arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+
+ if (priv->tx_tail != priv->regs->tx_out) {
+ ubi32_eth_tx_done(dev);
+ }
+
+ /* always call receive to process new RX frame as well as replenish RX buffers */
+ ubi32_eth_receive(dev, UBI32_RX_BOUND);
+
+ priv->regs->int_mask |= (UBI32_ETH_VP_INT_RX | UBI32_ETH_VP_INT_TX);
+ if ((priv->rx_tail != priv->regs->rx_out) || (priv->tx_tail != priv->regs->tx_out)) {
+ priv->regs->int_mask = 0;
+ tasklet_schedule(&priv->tsk);
+ }
+}
+#endif
+
+#if defined(UBICOM32_USE_POLLING)
+static struct timer_list eth_poll_timer;
+
+static void ubi32_eth_poll(unsigned long arg)
+{
+ struct net_device *dev;
+ struct ubi32_eth_private *priv;
+ int i;
+
+ for (i = 0; i < UBI32_ETH_NUM_OF_DEVICES; i++) {
+ dev = ubi32_eth_devices[i];
+ if (dev && (dev->flags & IFF_UP)) {
+ priv = netdev_priv(dev);
+#ifdef UBICOM32_USE_NAPI
+ napi_schedule(&priv->napi);
+#else
+ tasklet_schedule(&priv->tsk);
+#endif
+ }
+ }
+
+ eth_poll_timer.expires = jiffies + 2;
+ add_timer(&eth_poll_timer);
+}
+
+#else
+static irqreturn_t ubi32_eth_interrupt(int irq, void *dev_id)
+{
+ struct ubi32_eth_private *priv;
+
+ struct net_device *dev = (struct net_device *)dev_id;
+ BUG_ON(irq != dev->irq);
+
+ priv = netdev_priv(dev);
+ if (unlikely(!(priv->regs->int_status & priv->regs->int_mask))) {
+ return IRQ_NONE;
+ }
+
+ /*
+ * Disable port interrupt
+ */
+#ifdef UBICOM32_USE_NAPI
+ if (napi_schedule_prep(&priv->napi)) {
+ priv->regs->int_mask = 0;
+ __napi_schedule(&priv->napi);
+ }
+#else
+ priv->regs->int_mask = 0;
+ tasklet_schedule(&priv->tsk);
+#endif
+ return IRQ_HANDLED;
+}
+#endif
+
+/*
+ * ubi32_eth_open
+ */
+static int ubi32_eth_open(struct net_device *dev)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ int err;
+
+ printk(KERN_INFO "eth open %s\n",dev->name);
+#ifndef UBICOM32_USE_POLLING
+ /* request_region() */
+ err = request_irq(dev->irq, ubi32_eth_interrupt, IRQF_DISABLED, dev->name, dev);
+ if (err) {
+ printk(KERN_WARNING "fail to request_irq %d\n",err);
+ return -ENODEV;
+ }
+#endif
+#ifdef UBICOM32_USE_NAPI
+ napi_enable(&priv->napi);
+#else
+ tasklet_init(&priv->tsk, ubi32_eth_do_tasklet, (unsigned long)dev);
+#endif
+
+ /* call receive to supply RX buffers */
+ ubi32_eth_receive(dev, RX_DMA_MAX_QUEUE_SIZE);
+
+ /* check phy status and call netif_carrier_on */
+ ubi32_eth_vp_rxtx_enable(dev);
+ netif_start_queue(dev);
+ return 0;
+}
+
+static int ubi32_eth_close(struct net_device *dev)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ volatile void *pdata;
+ struct sk_buff *skb;
+
+#ifndef UBICOM32_USE_POLLING
+ free_irq(dev->irq, dev);
+#endif
+ netif_stop_queue(dev); /* can't transmit any more */
+#ifdef UBICOM32_USE_NAPI
+ napi_disable(&priv->napi);
+#else
+ tasklet_kill(&priv->tsk);
+#endif
+ ubi32_eth_vp_rxtx_stop(dev);
+
+ /*
+ * RX clean up
+ */
+ while (priv->rx_tail != priv->regs->rx_in) {
+ pdata = priv->regs->rx_dma_ring[priv->rx_tail];
+ skb = container_of((void *)pdata, struct sk_buff, cb);
+ priv->regs->rx_dma_ring[priv->rx_tail] = NULL;
+ dev_kfree_skb_any(skb);
+ priv->rx_tail = ((priv->rx_tail + 1) & RX_DMA_RING_MASK);
+ }
+ priv->regs->rx_in = 0;
+ priv->regs->rx_out = priv->regs->rx_in;
+ priv->rx_tail = priv->regs->rx_in;
+
+ /*
+ * TX clean up
+ */
+ BUG_ON(priv->regs->tx_out != priv->regs->tx_in);
+ ubi32_eth_tx_done(dev);
+ BUG_ON(priv->tx_tail != priv->regs->tx_in);
+ priv->regs->tx_in = 0;
+ priv->regs->tx_out = priv->regs->tx_in;
+ priv->tx_tail = priv->regs->tx_in;
+
+ return 0;
+}
+
+/*
+ * ubi32_eth_set_config
+ */
+static int ubi32_eth_set_config(struct net_device *dev, struct ifmap *map)
+{
+ /* if must to down to config it */
+ printk(KERN_INFO "set_config %x\n", dev->flags);
+ if (dev->flags & IFF_UP)
+ return -EBUSY;
+
+ /* I/O and IRQ can not be changed */
+ if (map->base_addr != dev->base_addr) {
+ printk(KERN_WARNING "%s: Can't change I/O address\n", dev->name);
+ return -EOPNOTSUPP;
+ }
+
+#ifndef UBICOM32_USE_POLLING
+ if (map->irq != dev->irq) {
+ printk(KERN_WARNING "%s: Can't change IRQ\n", dev->name);
+ return -EOPNOTSUPP;
+ }
+#endif
+
+ /* ignore other fields */
+ return 0;
+}
+
+static int ubi32_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ struct ubi32_eth_dma_desc *desc = NULL;
+ unsigned short space, tx_in;
+
+ tx_in = priv->regs->tx_in;
+
+ dev->trans_start = jiffies; /* save the timestamp */
+ space = TX_DMA_RING_MASK - ((TX_DMA_RING_SIZE + tx_in - priv->tx_tail) & TX_DMA_RING_MASK);
+
+ if (unlikely(space == 0)) {
+ if (!(priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL)) {
+ spin_lock(&priv->lock);
+ if (!(priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL)) {
+ priv->regs->status |= UBI32_ETH_VP_STATUS_TX_Q_FULL;
+ priv->vp_stats.tx_q_full_cnt++;
+ netif_stop_queue(dev);
+ }
+ spin_unlock(&priv->lock);
+ }
+
+ /* give both HW and this driver an extra trigger */
+ priv->regs->int_mask |= UBI32_ETH_VP_INT_TX;
+#ifndef UBICOM32_USE_POLLING
+ ubicom32_set_interrupt(dev->irq);
+#endif
+ ubicom32_set_interrupt(priv->vp_int_bit);
+
+ return NETDEV_TX_BUSY;
+ }
+
+ /*still have room */
+ desc = (struct ubi32_eth_dma_desc *)skb->cb;
+ desc->data_pointer = skb->data;
+ desc->data_len = skb->len;
+ priv->regs->tx_dma_ring[tx_in] = desc;
+ tx_in = ((tx_in + 1) & TX_DMA_RING_MASK);
+ wmb();
+ priv->regs->tx_in = tx_in;
+ /* kick the HRT */
+ ubicom32_set_interrupt(priv->vp_int_bit);
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * Deal with a transmit timeout.
+ */
+static void ubi32_eth_tx_timeout (struct net_device *dev)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ dev->stats.tx_errors++;
+ priv->regs->int_mask |= UBI32_ETH_VP_INT_TX;
+#ifndef UBICOM32_USE_POLLING
+ ubicom32_set_interrupt(dev->irq);
+#endif
+ ubicom32_set_interrupt(priv->vp_int_bit);
+}
+
+static int ubi32_eth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ struct mii_ioctl_data *data = if_mii(rq);
+
+ printk(KERN_INFO "ioctl %s, %d\n", dev->name, cmd);
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ data->phy_id = 0;
+ break;
+
+ case SIOCGMIIREG:
+ if ((data->reg_num & 0x1F) == MII_BMCR) {
+ /* Make up MII control register value from what we know */
+ data->val_out = 0x0000
+ | ((priv->regs->status & UBI32_ETH_VP_STATUS_DUPLEX)
+ ? BMCR_FULLDPLX : 0)
+ | ((priv->regs->status & UBI32_ETH_VP_STATUS_SPEED100)
+ ? BMCR_SPEED100 : 0)
+ | ((priv->regs->status & UBI32_ETH_VP_STATUS_SPEED1000)
+ ? BMCR_SPEED1000 : 0);
+ } else if ((data->reg_num & 0x1F) == MII_BMSR) {
+ /* Make up MII status register value from what we know */
+ data->val_out =
+ (BMSR_100FULL|BMSR_100HALF|BMSR_10FULL|BMSR_10HALF)
+ | ((priv->regs->status & UBI32_ETH_VP_STATUS_LINK)
+ ? BMSR_LSTATUS : 0);
+ } else {
+ return -EIO;
+ }
+ break;
+
+ case SIOCSMIIREG:
+ return -EOPNOTSUPP;
+ break;
+
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+/*
+ * Return statistics to the caller
+ */
+static struct net_device_stats *ubi32_eth_get_stats(struct net_device *dev)
+{
+ return &dev->stats;
+}
+
+
+static int ubi32_eth_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct ubi32_eth_private *priv = netdev_priv(dev);
+ unsigned long flags;
+
+ if ((new_mtu < 68) || (new_mtu > 1500))
+ return -EINVAL;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ dev->mtu = new_mtu;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ printk(KERN_INFO "set mtu to %d", new_mtu);
+ return 0;
+}
+
+/*
+ * ubi32_eth_cleanup: unload the module
+ */
+void ubi32_eth_cleanup(void)
+{
+ struct ubi32_eth_private *priv;
+ struct net_device *dev;
+ int i;
+
+ for (i = 0; i < UBI32_ETH_NUM_OF_DEVICES; i++) {
+ dev = ubi32_eth_devices[i];
+ if (dev) {
+ priv = netdev_priv(dev);
+ kfree(priv->regs->tx_dma_ring);
+ unregister_netdev(dev);
+ free_netdev(dev);
+ ubi32_eth_devices[i] = NULL;
+ }
+ }
+}
+
+int ubi32_eth_init_module(void)
+{
+ struct ethtionode *eth_node;
+ struct net_device *dev;
+ struct ubi32_eth_private *priv;
+ int i, err;
+
+ /*
+ * Device allocation.
+ */
+ err = 0;
+ for (i = 0; i < UBI32_ETH_NUM_OF_DEVICES; i++) {
+ /*
+ * See if the eth_vp is in the device tree.
+ */
+ eth_node = (struct ethtionode *)devtree_find_node(eth_if_name[i]);
+ if (!eth_node) {
+ printk(KERN_INFO "%s does not exist\n", eth_if_name[i]);
+ continue;
+ }
+
+ eth_node->tx_dma_ring = (struct ubi32_eth_dma_desc **)kmalloc(
+ sizeof(struct ubi32_eth_dma_desc *) *
+ (TX_DMA_RING_SIZE + RX_DMA_RING_SIZE),
+ GFP_ATOMIC | __GFP_NOWARN | __GFP_NORETRY | GFP_DMA);
+
+ if (eth_node->tx_dma_ring == NULL) {
+ eth_node->tx_dma_ring = (struct ubi32_eth_dma_desc **)kmalloc(
+ sizeof(struct ubi32_eth_dma_desc *) *
+ (TX_DMA_RING_SIZE + RX_DMA_RING_SIZE), GFP_KERNEL);
+ printk(KERN_INFO "fail to allocate from OCM\n");
+ }
+
+ if (!eth_node->tx_dma_ring) {
+ err = -ENOMEM;
+ break;
+ }
+ eth_node->rx_dma_ring = eth_node->tx_dma_ring + TX_DMA_RING_SIZE;
+ eth_node->tx_sz = TX_DMA_RING_SIZE - 1;
+ eth_node->rx_sz = RX_DMA_RING_SIZE - 1;
+
+ dev = alloc_etherdev(sizeof(struct ubi32_eth_private));
+ if (!dev) {
+ kfree(eth_node->tx_dma_ring);
+ err = -ENOMEM;
+ break;
+ }
+ priv = netdev_priv(dev);
+ priv->dev = dev;
+
+ /*
+ * This just fill in some default Ubicom MAC address
+ */
+ memcpy(dev->dev_addr, mac_addr[i], ETH_ALEN);
+ memset(dev->broadcast, 0xff, ETH_ALEN);
+
+ priv->regs = eth_node;
+ priv->regs->command = 0;
+ priv->regs->int_mask = 0;
+ priv->regs->int_status = 0;
+ priv->regs->tx_out = 0;
+ priv->regs->rx_out = 0;
+ priv->regs->tx_in = 0;
+ priv->regs->rx_in = 0;
+ priv->rx_tail = 0;
+ priv->tx_tail = 0;
+
+ priv->vp_int_bit = eth_node->dn.sendirq;
+ dev->irq = eth_node->dn.recvirq;
+
+ spin_lock_init(&priv->lock);
+
+ dev->open = ubi32_eth_open;
+ dev->stop = ubi32_eth_close;
+ dev->hard_start_xmit = ubi32_eth_start_xmit;
+ dev->tx_timeout = ubi32_eth_tx_timeout;
+ dev->watchdog_timeo = UBI32_ETH_VP_TX_TIMEOUT;
+
+ dev->set_config = ubi32_eth_set_config;
+ dev->do_ioctl = ubi32_eth_ioctl;
+ dev->get_stats = ubi32_eth_get_stats;
+ dev->change_mtu = ubi32_eth_change_mtu;
+#ifdef UBICOM32_USE_NAPI
+ netif_napi_add(dev, &priv->napi, ubi32_eth_napi_poll, UBI32_ETH_NAPI_WEIGHT);
+#endif
+ err = register_netdev(dev);
+ if (err) {
+ printk(KERN_WARNING "Failed to register netdev %s\n", eth_if_name[i]);
+ //release_region();
+ free_netdev(dev);
+ kfree(eth_node->tx_dma_ring);
+ break;
+ }
+
+ ubi32_eth_devices[i] = dev;
+ printk(KERN_INFO "%s vp_base:0x%p, tio_int:%d irq:%d feature:0x%lx\n",
+ dev->name, priv->regs, eth_node->dn.sendirq, dev->irq, dev->features);
+ }
+
+ if (err) {
+ ubi32_eth_cleanup();
+ return err;
+ }
+
+ if (!ubi32_eth_devices[0] && !ubi32_eth_devices[1]) {
+ return -ENODEV;
+ }
+
+#if defined(UBICOM32_USE_POLLING)
+ init_timer(&eth_poll_timer);
+ eth_poll_timer.function = ubi32_eth_poll;
+ eth_poll_timer.data = (unsigned long)0;
+ eth_poll_timer.expires = jiffies + 2;
+ add_timer(&eth_poll_timer);
+#endif
+
+ return 0;
+}
+
+module_init(ubi32_eth_init_module);
+module_exit(ubi32_eth_cleanup);
+
+MODULE_AUTHOR("Kan Yan, Greg Ren");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/ubicom32/files/drivers/net/ubi32-eth.h b/target/linux/ubicom32/files/drivers/net/ubi32-eth.h
new file mode 100644
index 0000000..c255001
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/net/ubi32-eth.h
@@ -0,0 +1,132 @@
+/*
+ * drivers/net/ubi32-eth.h
+ * Ubicom32 ethernet TIO interface driver definitions.
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#ifndef _UBI32_ETH_H
+#define _UBI32_ETH_H
+
+#include <asm/devtree.h>
+
+#define UBI32_ETH_NUM_OF_DEVICES 2
+
+/*
+ * Number of bytes trashed beyond the packet data.
+ */
+#define UBI32_ETH_TRASHED_MEMORY (CACHE_LINE_SIZE + ETH_HLEN - 1)
+
+/*
+ * Linux already reserves NET_SKB_PAD bytes of headroom in each sk_buff.
+ * We want to be able to reserve at least one cache line to align Ethernet
+ * and IP header to cache line.
+ * Note that the TIO expects a CACHE_LINE_SIZE - ETH_HLEN aligned Ethernet
+ * header, while satisfies NET_IP_ALIGN (= 2) automatically.
+ * (NET_SKB_PAD is 16, NET_IP_ALIGN is 2, CACHE_LINE_SIZE is 32).
+ * You can add more space by making UBI32_ETH_RESERVE_EXTRA != 0.
+ */
+#define UBI32_ETH_RESERVE_EXTRA (1 * CACHE_LINE_SIZE)
+#define UBI32_ETH_RESERVE_SPACE (UBI32_ETH_RESERVE_EXTRA + CACHE_LINE_SIZE)
+
+struct ubi32_eth_dma_desc {
+ volatile void *data_pointer; /* pointer to the buffer */
+ volatile u16 buffer_len; /* the buffer size */
+ volatile u16 data_len; /* actual frame length */
+ volatile u32 status; /* bit0: status to be update by VP; bit[31:1] time stamp */
+};
+
+#define TX_DMA_RING_SIZE (1<<8)
+#define TX_DMA_RING_MASK (TX_DMA_RING_SIZE - 1)
+#define RX_DMA_RING_SIZE (1<<8)
+#define RX_DMA_RING_MASK (RX_DMA_RING_SIZE - 1)
+
+#define RX_DMA_MAX_QUEUE_SIZE (RX_DMA_RING_SIZE - 1) /* no more than (RX_DMA_RING_SIZE - 1) */
+#define RX_MAX_PKT_SIZE (ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN)
+#define RX_MIN_PKT_SIZE ETH_ZLEN
+#define RX_BUF_SIZE (RX_MAX_PKT_SIZE + VLAN_HLEN) /* allow double VLAN tag */
+
+#define UBI32_ETH_VP_TX_TIMEOUT (10*HZ)
+
+struct ubi32_eth_vp_stats {
+ u32 rx_alloc_err;
+ u32 tx_q_full_cnt;
+ u32 rx_q_full_cnt;
+ u32 rx_throttle;
+};
+
+struct ubi32_eth_private {
+ struct net_device *dev;
+ struct ubi32_eth_vp_stats vp_stats;
+ spinlock_t lock;
+#ifdef UBICOM32_USE_NAPI
+ struct napi_struct napi;
+#else
+ struct tasklet_struct tsk;
+#endif
+ struct ethtionode *regs;
+ u16 rx_tail;
+ u16 tx_tail;
+ u32 vp_int_bit;
+};
+
+struct ethtionode {
+ struct devtree_node dn;
+ volatile u16 command;
+ volatile u16 status;
+ volatile u16 int_mask; /* interrupt mask */
+ volatile u16 int_status; /* interrupt mask */
+ volatile u16 tx_in; /* owned by driver */
+ volatile u16 tx_out; /* owned by vp */
+ volatile u16 rx_in; /* owned by driver */
+ volatile u16 rx_out; /* owned by vp */
+ u16 tx_sz; /* owned by driver */
+ u16 rx_sz; /* owned by driver */
+ struct ubi32_eth_dma_desc **tx_dma_ring;
+ struct ubi32_eth_dma_desc **rx_dma_ring;
+};
+
+#define UBI32_ETH_VP_STATUS_LINK (1<<0)
+#define UBI32_ETH_VP_STATUS_SPEED100 (0x1<<1)
+#define UBI32_ETH_VP_STATUS_SPEED1000 (0x1<<2)
+#define UBI32_ETH_VP_STATUS_DUPLEX (0x1<<3)
+#define UBI32_ETH_VP_STATUS_FLOW_CTRL (0x1<<4)
+
+#define UBI32_ETH_VP_STATUS_RX_STATE (0x1<<5)
+#define UBI32_ETH_VP_STATUS_TX_STATE (0x1<<6)
+
+#define UBI32_ETH_VP_STATUS_TX_Q_FULL (1<<8)
+
+#define UBI32_ETH_VP_INT_RX (1<<0)
+#define UBI32_ETH_VP_INT_TX (1<<1)
+
+#define UBI32_ETH_VP_CMD_RX_ENABLE (1<<0)
+#define UBI32_ETH_VP_CMD_TX_ENABLE (1<<1)
+
+#define UBI32_ETH_VP_RX_OK (1<<0)
+#define UBI32_ETH_VP_TX_OK (1<<1)
+
+#define UBI32_TX_BOUND TX_DMA_RING_SIZE
+#define UBI32_RX_BOUND 64
+#define UBI32_ETH_NAPI_WEIGHT 64 /* for GigE */
+#endif
diff --git a/target/linux/ubicom32/files/drivers/serial/ubi32_mailbox.c b/target/linux/ubicom32/files/drivers/serial/ubi32_mailbox.c
new file mode 100644
index 0000000..fc0d6d2
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/serial/ubi32_mailbox.c
@@ -0,0 +1,928 @@
+/*
+ * drivers/serial/ubi32_mailbox.c
+ * Ubicom32 On-Chip Mailbox Driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/platform_device.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_core.h>
+
+#include <asm/ip5000.h>
+
+#define SERIAL_UBICOM_BAUDRATE 115200
+#define SERIAL_UBICOM_DATA_BIT 8 /* Fixed parameter - do not change */
+#define SERIAL_UBICOM_PAR_BIT 0 /* Fixed parameter - do not change */
+#define SERIAL_UBICOM_STOP_BIT 1 /* Fixed parameter - do not change */
+
+/* UART name and device definitions */
+#define UBI32_MAILBOX_NAME "ttyUM" // XXX
+#define UBI32_MAILBOX_MAJOR 207 // XXX
+#define UBI32_MAILBOX_MINOR 64
+
+#define PORT_UBI32_MAILBOX 1235
+#define NR_PORTS 1
+
+#define get_sclk() 0
+
+struct ubi32_mailbox_port {
+ struct uart_port port;
+ /*
+ * NOTE (rkeller):
+ * the uart port is wrapped in another structure in case we need to hold more state than
+ * what we can hold in the uart_port.
+ * Not sure if we need this, I took over the concept from the blackfin driver.
+ */
+} ubi32_mailbox_ports[NR_PORTS];
+
+struct ubi32_mailbox_resource {
+ int uart_base_addr;
+ int uart_irq;
+} ubi32_mailbox_resource[NR_PORTS] = {
+ /*
+ * uart_base_addr has to be non-NULL because it is put in the uart_port membase.
+ * If membase if null the kernel skips the configuration and our port_type never gets set.
+ */
+ {ISD_MAILBOX_BASE, ISD_MAILBOX_INT}
+};
+
+static volatile struct ubicom32_isd_mailbox {
+ volatile u32_t in;
+ volatile u32_t out;
+ volatile u32_t status;
+} *ubi32_mailbox = (struct ubicom32_isd_mailbox *)ISD_MAILBOX_BASE;
+
+static void ubi32_mailbox_tx_chars(struct ubi32_mailbox_port *uart);
+
+static void ubi32_mailbox_mctrl_check(struct ubi32_mailbox_port *uart);
+
+#define TRUE 1
+#define FALSE 0
+
+static int mailbox_console_flg = TRUE;
+static int num_timeouts = 0;
+
+/*
+ * dummy functions and defined to be able to compile the Blackfin code
+ */
+#define UART_GET_LSR(port) (1)
+#define UART_PUT_LSR(port, bits)
+#define UART_CLEAR_LSR(port) (1)
+#define TEMT 1
+#define TFI 1
+#define BI 1
+#define PE 1
+#define OE 1
+#define FE 1
+#define THRE 1
+#define DR 1
+#define UART_GET_LCR(port) (1)
+#define UART_PUT_LCR(port, bits)
+#define SB 1
+#define STB 1
+#define PEN 1
+#define EPS 1
+#define STP 1
+#define WLS(n) 0
+#define UART_GET_IER(port) (1)
+#define UART_SET_IER(port, bits)
+#define UART_CLEAR_IER(port, bits)
+#define ETBEI 0
+#define ERBFI 0
+#define UART_GET_CHAR(port) ubi32_mailbox_get_char()
+#define UART_PUT_CHAR(port, ch) ubi32_mailbox_put_char(ch)
+#define SSYNC()
+#define UART_GET_DLL(port) 0
+#define UART_PUT_DLL(port, ch)
+#define UART_GET_DLH(port) 0
+#define UART_PUT_DLH(port, ch)
+#define UART_GET_GCTL(port) (0)
+#define UART_PUT_GCTL(port, ch)
+#define UCEN 1
+
+/*
+ * ubi32_mailbox_get_char_avail()
+ */
+static int ubi32_mailbox_get_char_avail(void)
+{
+ return !(ubi32_mailbox->status & ISD_MAILBOX_STATUS_IN_EMPTY);
+}
+
+/*
+ * ubi32_mailbox_get_char()
+ */
+static u32_t ubi32_mailbox_get_char(void)
+{
+ if (mailbox_console_flg == TRUE) {
+ /*
+ * Mailbox console is connected.
+ */
+ while (ubi32_mailbox->status & ISD_MAILBOX_STATUS_IN_EMPTY);
+ return ubi32_mailbox->in & 0xff;
+ }
+
+ /*
+ * Mailbox console was not connected.
+ */
+ if (ubi32_mailbox->status & ISD_MAILBOX_STATUS_IN_EMPTY) {
+ return 0xff;
+ }
+
+ /*
+ * Mailbox console is connecting.
+ */
+ mailbox_console_flg = TRUE;
+ num_timeouts = 0;
+ return ubi32_mailbox->in & 0xff;
+}
+
+#define MAILBOX_MAX_ATTEMPTS 1000000
+#define MAILBOX_MAX_TIMEOUTS 5
+/*
+ * ubi32_mailbox_put_char()
+ */
+static void ubi32_mailbox_put_char(u32_t v)
+{
+ /*
+ * Wait to be able to output.
+ */
+ u32_t num_attempts = 0;
+
+ if(mailbox_console_flg == TRUE) {
+ while(num_attempts++ < MAILBOX_MAX_ATTEMPTS) {
+ if(ubi32_mailbox->status & ISD_MAILBOX_STATUS_OUT_EMPTY) {
+ break;
+ }
+ }
+
+ /*
+ * If timed out more than 5 times on send, mailbox console is disconnected now.
+ */
+ if (num_attempts > MAILBOX_MAX_ATTEMPTS) {
+ if (num_timeouts++ > MAILBOX_MAX_TIMEOUTS) {
+ mailbox_console_flg = FALSE;
+ }
+ }
+ }
+
+ asm volatile(
+ "pipe_flush 0 \n\t"
+ "pipe_flush 0 \n\t"
+ "pipe_flush 0 \n\t"
+ "pipe_flush 0 \n\t"
+ "pipe_flush 0 \n\t"
+ "pipe_flush 0 \n\t"
+ "pipe_flush 0 \n\t"
+ );
+
+ ubi32_mailbox->out = v & 0xff;
+}
+
+static void ubi32_mailbox_hw_init(struct ubi32_mailbox_port *uart)
+{
+// NOTE: It does not do any good to do these here because we are running on the linux hardware thread,
+// and these have to be called on the ldsr thread.
+// ubicom32_clear_interrupt(ISD_MAILBOX_INT);
+// ubicom32_enable_interrupt(ISD_MAILBOX_INT);
+}
+
+/*
+ * interrupts are disabled on entry
+ */
+static void ubi32_mailbox_stop_tx(struct uart_port *port)
+{
+// struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+// struct circ_buf *xmit = &uart->port.info->xmit;
+
+ while (!(UART_GET_LSR(uart) & TEMT))
+ cpu_relax();
+
+ /* Clear TFI bit */
+ UART_PUT_LSR(uart, TFI);
+ UART_CLEAR_IER(uart, ETBEI);
+}
+
+/*
+ * port is locked and interrupts are disabled
+ */
+static void ubi32_mailbox_start_tx(struct uart_port *port)
+{
+ struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+
+ UART_SET_IER(uart, ETBEI);
+
+ ubi32_mailbox_tx_chars(uart);
+}
+
+/*
+ * Interrupts are enabled
+ */
+static void ubi32_mailbox_stop_rx(struct uart_port *port)
+{
+// struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+ UART_CLEAR_IER(uart, ERBFI);
+}
+
+/*
+ * Set the modem control timer to fire immediately.
+ */
+static void ubi32_mailbox_enable_ms(struct uart_port *port)
+{
+}
+
+static void ubi32_mailbox_rx_chars(struct ubi32_mailbox_port *uart)
+{
+ struct uart_info *info = uart->port.info;
+ struct tty_struct *tty = info->port.tty;
+ unsigned int status, ch, flg;
+
+ status = 0; // XXX? UART_GET_LSR(uart);
+ UART_CLEAR_LSR(uart);
+
+ ch = UART_GET_CHAR(uart);
+
+ if(ch == 0xff)
+ return;
+
+ uart->port.icount.rx++;
+
+ if (status & BI) {
+ uart->port.icount.brk++;
+ if (uart_handle_break(&uart->port))
+ goto ignore_char;
+ status &= ~(PE | FE);
+ }
+ if (status & PE)
+ uart->port.icount.parity++;
+ if (status & OE)
+ uart->port.icount.overrun++;
+ if (status & FE)
+ uart->port.icount.frame++;
+
+ status &= uart->port.read_status_mask;
+
+ if (status & BI)
+ flg = TTY_BREAK;
+ else if (status & PE)
+ flg = TTY_PARITY;
+ else if (status & FE)
+ flg = TTY_FRAME;
+ else
+ flg = TTY_NORMAL;
+
+ if (uart_handle_sysrq_char(&uart->port, ch))
+ goto ignore_char;
+
+ uart_insert_char(&uart->port, status, OE, ch, flg);
+
+ ignore_char:
+ tty_flip_buffer_push(tty);
+}
+
+static void ubi32_mailbox_tx_chars(struct ubi32_mailbox_port *uart)
+{
+ struct circ_buf *xmit = &uart->port.info->xmit;
+
+ if (uart->port.x_char) {
+ UART_PUT_CHAR(uart, uart->port.x_char);
+ uart->port.icount.tx++;
+ uart->port.x_char = 0;
+ }
+ /*
+ * Check the modem control lines before
+ * transmitting anything.
+ */
+ ubi32_mailbox_mctrl_check(uart);
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
+ ubi32_mailbox_stop_tx(&uart->port);
+ return;
+ }
+
+ while ((UART_GET_LSR(uart) & THRE) && xmit->tail != xmit->head) {
+ UART_PUT_CHAR(uart, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ uart->port.icount.tx++;
+ SSYNC();
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(&uart->port);
+
+ if (uart_circ_empty(xmit))
+ ubi32_mailbox_stop_tx(&uart->port);
+}
+
+static irqreturn_t ubi32_mailbox_isr(int irq, void *dev_id)
+{
+ struct ubi32_mailbox_port *uart = dev_id;
+
+ spin_lock(&uart->port.lock);
+
+ //XXX?while (UART_GET_LSR(uart) & DR)
+
+ /*
+ * RX process
+ */
+ while (ubi32_mailbox_get_char_avail()) {
+ ubi32_mailbox_rx_chars(uart);
+ }
+
+#if 0
+ /*
+ * TX process
+ */
+ if (this_uart.tx_in == this_uart.tx_out) {
+ UBICOM32_IO_PORT(SERIAL_UBICOM_PORT)->int_mask &= ~IO_PORTX_INT_SERDES_TXBE;
+ } else if (UBICOM32_IO_PORT(SERIAL_UBICOM_PORT)->int_status & IO_PORTX_INT_SERDES_TXBE) {
+ uart_ubicom32_send(this_uart.tx_buf[this_uart.tx_out & (SERIAL_UBICOM_BUF_SIZE - 1)]);
+ this_uart.tx_out++;
+ UBICOM32_IO_PORT(SERIAL_UBICOM_PORT)->int_mask |= IO_PORTX_INT_SERDES_TXBE;
+ }
+#endif
+
+ spin_unlock(&uart->port.lock);
+
+ return IRQ_HANDLED;
+}
+#if 0
+static irqreturn_t ubi32_mailbox_tx_int(int irq, void *dev_id)
+{
+ struct ubi32_mailbox_port *uart = dev_id;
+
+ spin_lock(&uart->port.lock);
+ if (UART_GET_LSR(uart) & THRE)
+ ubi32_mailbox_tx_chars(uart);
+ spin_unlock(&uart->port.lock);
+
+ return IRQ_HANDLED;
+}
+#endif
+
+/*
+ * Return TIOCSER_TEMT when transmitter is not busy.
+ */
+static unsigned int ubi32_mailbox_tx_empty(struct uart_port *port)
+{
+// struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+ unsigned short lsr;
+
+ lsr = UART_GET_LSR(uart);
+ if (lsr & TEMT)
+ return TIOCSER_TEMT;
+ else
+ return 0;
+}
+
+static unsigned int ubi32_mailbox_get_mctrl(struct uart_port *port)
+{
+ return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+}
+
+static void ubi32_mailbox_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+}
+
+/*
+ * Handle any change of modem status signal since we were last called.
+ */
+static void ubi32_mailbox_mctrl_check(struct ubi32_mailbox_port *uart)
+{
+}
+
+/*
+ * Interrupts are always disabled.
+ */
+static void ubi32_mailbox_break_ctl(struct uart_port *port, int break_state)
+{
+// struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+ u16 lcr = UART_GET_LCR(uart);
+ if (break_state)
+ lcr |= SB;
+ else
+ lcr &= ~SB;
+ UART_PUT_LCR(uart, lcr);
+ SSYNC();
+}
+
+static int ubi32_mailbox_startup(struct uart_port *port)
+{
+ struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+
+ if (request_irq(uart->port.irq, ubi32_mailbox_isr, IRQF_DISABLED,
+ "UBI32_MAILBOX", uart)) {
+ printk(KERN_NOTICE "Unable to attach Ubicom32 SERDES interrupt\n");
+ return -EBUSY;
+ }
+
+ UART_SET_IER(uart, ERBFI);
+ return 0;
+}
+
+static void ubi32_mailbox_shutdown(struct uart_port *port)
+{
+ struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+
+ free_irq(uart->port.irq, uart);
+}
+
+static void
+ubi32_mailbox_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
+{
+ struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+ unsigned long flags;
+ unsigned int baud, quot;
+ unsigned short val, ier, lsr, lcr = 0;
+
+ switch (termios->c_cflag & CSIZE) {
+ case CS8:
+ lcr = WLS(8);
+ break;
+ case CS7:
+ lcr = WLS(7);
+ break;
+ case CS6:
+ lcr = WLS(6);
+ break;
+ case CS5:
+ lcr = WLS(5);
+ break;
+ default:
+ printk(KERN_ERR "%s: word lengh not supported\n",
+ __FUNCTION__);
+ }
+
+ if (termios->c_cflag & CSTOPB)
+ lcr |= STB;
+ if (termios->c_cflag & PARENB)
+ lcr |= PEN;
+ if (!(termios->c_cflag & PARODD))
+ lcr |= EPS;
+ if (termios->c_cflag & CMSPAR)
+ lcr |= STP;
+
+ port->read_status_mask = OE;
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |= (FE | PE);
+ if (termios->c_iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= BI;
+
+ /*
+ * Characters to ignore
+ */
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= FE | PE;
+ if (termios->c_iflag & IGNBRK) {
+ port->ignore_status_mask |= BI;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= OE;
+ }
+
+ baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
+ quot = uart_get_divisor(port, baud);
+ spin_lock_irqsave(&uart->port.lock, flags);
+
+ do {
+ lsr = UART_GET_LSR(uart);
+ } while (!(lsr & TEMT));
+
+ /* Disable UART */
+ ier = UART_GET_IER(uart);
+ UART_CLEAR_IER(uart, 0xF);
+
+ UART_PUT_DLL(uart, quot & 0xFF);
+ SSYNC();
+ UART_PUT_DLH(uart, (quot >> 8) & 0xFF);
+ SSYNC();
+
+ UART_PUT_LCR(uart, lcr);
+
+ /* Enable UART */
+ UART_SET_IER(uart, ier);
+
+ val = UART_GET_GCTL(uart);
+ val |= UCEN;
+ UART_PUT_GCTL(uart, val);
+
+ spin_unlock_irqrestore(&uart->port.lock, flags);
+}
+
+static const char *ubi32_mailbox_type(struct uart_port *port)
+{
+ struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+
+ return uart->port.type == PORT_UBI32_MAILBOX ? "UBI32_MAILBOX" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'.
+ */
+static void ubi32_mailbox_release_port(struct uart_port *port)
+{
+}
+
+/*
+ * Request the memory region(s) being used by 'port'.
+ */
+static int ubi32_mailbox_request_port(struct uart_port *port)
+{
+ return 0;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void ubi32_mailbox_config_port(struct uart_port *port, int flags)
+{
+ struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+
+ if (flags & UART_CONFIG_TYPE && ubi32_mailbox_request_port(&uart->port) == 0)
+ uart->port.type = PORT_UBI32_MAILBOX;
+}
+
+/*
+ * Verify the new serial_struct (for TIOCSSERIAL).
+ * The only change we allow are to the flags and type, and
+ * even then only between PORT_UBI32_MAILBOX and PORT_UNKNOWN
+ */
+static int
+ubi32_mailbox_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ return 0;
+}
+
+static struct uart_ops ubi32_mailbox_pops = {
+ .tx_empty = ubi32_mailbox_tx_empty,
+ .set_mctrl = ubi32_mailbox_set_mctrl,
+ .get_mctrl = ubi32_mailbox_get_mctrl,
+ .stop_tx = ubi32_mailbox_stop_tx,
+ .start_tx = ubi32_mailbox_start_tx,
+ .stop_rx = ubi32_mailbox_stop_rx,
+ .enable_ms = ubi32_mailbox_enable_ms,
+ .break_ctl = ubi32_mailbox_break_ctl,
+ .startup = ubi32_mailbox_startup,
+ .shutdown = ubi32_mailbox_shutdown,
+ .set_termios = ubi32_mailbox_set_termios,
+ .type = ubi32_mailbox_type,
+ .release_port = ubi32_mailbox_release_port,
+ .request_port = ubi32_mailbox_request_port,
+ .config_port = ubi32_mailbox_config_port,
+ .verify_port = ubi32_mailbox_verify_port,
+};
+
+static void __init ubi32_mailbox_init_ports(void)
+{
+ static int first = 1;
+ int i;
+
+ if (!first)
+ return;
+ first = 0;
+
+ for (i = 0; i < NR_PORTS; i++) {
+ ubi32_mailbox_ports[i].port.uartclk = get_sclk();
+ ubi32_mailbox_ports[i].port.ops = &ubi32_mailbox_pops;
+ ubi32_mailbox_ports[i].port.line = i;
+ ubi32_mailbox_ports[i].port.iotype = UPIO_MEM;
+ ubi32_mailbox_ports[i].port.membase =
+ (void __iomem *)ubi32_mailbox_resource[i].uart_base_addr;
+ ubi32_mailbox_ports[i].port.mapbase =
+ ubi32_mailbox_resource[i].uart_base_addr;
+ ubi32_mailbox_ports[i].port.irq =
+ ubi32_mailbox_resource[i].uart_irq;
+ ubi32_mailbox_ports[i].port.flags = UPF_BOOT_AUTOCONF;
+ spin_lock_init(&ubi32_mailbox_ports[i].port.lock);
+
+ ubi32_mailbox_hw_init(&ubi32_mailbox_ports[i]);
+ }
+
+}
+
+#ifdef CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE
+/*
+ * If the port was already initialised (eg, by a boot loader),
+ * try to determine the current setup.
+ */
+static void __init
+ubi32_mailbox_console_get_options(struct ubi32_mailbox_port *uart, int *baud,
+ int *parity, int *bits)
+{
+ unsigned short status;
+
+ status = UART_GET_IER(uart) & (ERBFI | ETBEI);
+ if (status == (ERBFI | ETBEI)) {
+ /* ok, the port was enabled */
+ unsigned short lcr;
+ unsigned short dlh, dll;
+
+ lcr = UART_GET_LCR(uart);
+
+ *parity = 'n';
+ if (lcr & PEN) {
+ if (lcr & EPS)
+ *parity = 'e';
+ else
+ *parity = 'o';
+ }
+ switch (lcr & 0x03) {
+ case 0: *bits = 5; break;
+ case 1: *bits = 6; break;
+ case 2: *bits = 7; break;
+ case 3: *bits = 8; break;
+ }
+
+ dll = UART_GET_DLL(uart);
+ dlh = UART_GET_DLH(uart);
+
+ *baud = get_sclk() / (16*(dll | dlh << 8));
+ }
+ pr_debug("%s:baud = %d, parity = %c, bits= %d\n", __FUNCTION__, *baud, *parity, *bits);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
+static struct uart_driver ubi32_mailbox_reg;
+
+static int __init
+ubi32_mailbox_console_setup(struct console *co, char *options)
+{
+ struct ubi32_mailbox_port *uart;
+# ifdef CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE
+ int baud = SERIAL_UBICOM_BAUDRATE;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+# endif
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index == -1 || co->index >= NR_PORTS)
+ co->index = 0;
+ uart = &ubi32_mailbox_ports[co->index];
+
+# ifdef CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ ubi32_mailbox_console_get_options(uart, &baud, &parity, &bits);
+
+ //JB return uart_set_options(&uart->port, co, baud, parity, bits, flow);
+ return 0;
+# else
+ return 0;
+# endif
+}
+#endif /* defined (CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE) ||
+ defined (CONFIG_EARLY_PRINTK) */
+
+#ifdef CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE
+static void ubi32_mailbox_console_putchar(struct uart_port *port, int ch)
+{
+// struct ubi32_mailbox_port *uart = (struct ubi32_mailbox_port *)port;
+ while (!(UART_GET_LSR(uart) & THRE))
+ barrier();
+ UART_PUT_CHAR(uart, ch);
+ SSYNC();
+}
+
+/*
+ * Interrupts are disabled on entering
+ */
+static void
+ubi32_mailbox_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct ubi32_mailbox_port *uart = &ubi32_mailbox_ports[co->index];
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&uart->port.lock, flags);
+ uart_console_write(&uart->port, s, count, ubi32_mailbox_console_putchar);
+ spin_unlock_irqrestore(&uart->port.lock, flags);
+
+}
+
+static struct console ubi32_mailbox_console = {
+ .name = UBI32_MAILBOX_NAME,
+ .write = ubi32_mailbox_console_write,
+ .device = uart_console_device,
+ .setup = ubi32_mailbox_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &ubi32_mailbox_reg,
+};
+
+static int __init ubi32_mailbox_console_init(void)
+{
+ ubi32_mailbox_init_ports();
+ register_console(&ubi32_mailbox_console);
+ return 0;
+}
+console_initcall(ubi32_mailbox_console_init);
+
+#define UBI32_MAILBOX_CONSOLE &ubi32_mailbox_console
+#else
+#define UBI32_MAILBOX_CONSOLE NULL
+#endif /* CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE */
+
+
+#ifdef CONFIG_EARLY_PRINTK
+static __init void ubi32_mailbox_early_putc(struct uart_port *port, int ch)
+{
+ UART_PUT_CHAR(uart, ch);
+}
+
+static __init void ubi32_mailbox_early_write(struct console *con, const char *s,
+ unsigned int n)
+{
+ struct ubi32_mailbox_port *uart = &ubi32_mailbox_ports[con->index];
+ unsigned int i;
+
+ for (i = 0; i < n; i++, s++) {
+ if (*s == '\n')
+ ubi32_mailbox_early_putc(&uart->port, '\r');
+ ubi32_mailbox_early_putc(&uart->port, *s);
+ }
+}
+
+static struct __init console ubi32_mailbox_early_console = {
+ .name = "early_UM",
+ .write = ubi32_mailbox_early_write,
+ .device = uart_console_device,
+ .flags = CON_PRINTBUFFER,
+ .setup = ubi32_mailbox_console_setup,
+ .index = -1,
+ .data = &ubi32_mailbox_reg,
+};
+
+/*
+ * XXX Unused in our driver. Need to find out what the termios initialization is good/needed for.
+ */
+struct console __init *ubi32_mailbox_early_init(unsigned int port,
+ unsigned int cflag)
+{
+ struct ubi32_mailbox_port *uart;
+ struct ktermios t;
+
+ if (port == -1 || port >= NR_PORTS)
+ port = 0;
+ ubi32_mailbox_init_ports();
+ ubi32_mailbox_early_console.index = port;
+ uart = &ubi32_mailbox_ports[port];
+ t.c_cflag = cflag;
+ t.c_iflag = 0;
+ t.c_oflag = 0;
+ t.c_lflag = ICANON;
+ t.c_line = port;
+ ubi32_mailbox_set_termios(&uart->port, &t, &t);
+ return &ubi32_mailbox_early_console;
+}
+
+#endif /* CONFIG_SERIAL_UBI32_MAILBOX_CONSOLE */
+
+static struct uart_driver ubi32_mailbox_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = "ubi32_mailbox",
+ .dev_name = UBI32_MAILBOX_NAME,
+ .major = UBI32_MAILBOX_MAJOR,
+ .minor = UBI32_MAILBOX_MINOR,
+ .nr = NR_PORTS,
+ .cons = UBI32_MAILBOX_CONSOLE,
+};
+
+static int ubi32_mailbox_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct ubi32_mailbox_port *uart = platform_get_drvdata(dev);
+
+ if (uart)
+ uart_suspend_port(&ubi32_mailbox_reg, &uart->port);
+
+ return 0;
+}
+
+static int ubi32_mailbox_resume(struct platform_device *dev)
+{
+ struct ubi32_mailbox_port *uart = platform_get_drvdata(dev);
+
+ if (uart)
+ uart_resume_port(&ubi32_mailbox_reg, &uart->port);
+
+ return 0;
+}
+
+static int ubi32_mailbox_probe(struct platform_device *dev)
+{
+ struct resource *res = dev->resource;
+ int i;
+
+ for (i = 0; i < dev->num_resources; i++, res++)
+ if (res->flags & IORESOURCE_MEM)
+ break;
+
+ if (i < dev->num_resources) {
+ for (i = 0; i < NR_PORTS; i++, res++) {
+ if (ubi32_mailbox_ports[i].port.mapbase != res->start)
+ continue;
+ ubi32_mailbox_ports[i].port.dev = &dev->dev;
+ uart_add_one_port(&ubi32_mailbox_reg, &ubi32_mailbox_ports[i].port);
+ platform_set_drvdata(dev, &ubi32_mailbox_ports[i]);
+ }
+ }
+
+ return 0;
+}
+
+static int ubi32_mailbox_remove(struct platform_device *pdev)
+{
+ struct ubi32_mailbox_port *uart = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (uart)
+ uart_remove_one_port(&ubi32_mailbox_reg, &uart->port);
+
+ return 0;
+}
+
+static struct platform_driver ubi32_mailbox_driver = {
+ .probe = ubi32_mailbox_probe,
+ .remove = ubi32_mailbox_remove,
+ .suspend = ubi32_mailbox_suspend,
+ .resume = ubi32_mailbox_resume,
+ .driver = {
+ .name = "ubi32-mbox",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ubi32_mailbox_init(void)
+{
+ int ret;
+
+ pr_info("Serial: Ubicom32 mailbox serial driver.\n");
+
+ mailbox_console_flg = TRUE;
+ num_timeouts = 0;
+ ubi32_mailbox_init_ports();
+
+ ret = uart_register_driver(&ubi32_mailbox_reg);
+ if (ret == 0) {
+ ret = platform_driver_register(&ubi32_mailbox_driver);
+ if (ret) {
+ pr_debug("uart register failed\n");
+ uart_unregister_driver(&ubi32_mailbox_reg);
+ }
+ }
+
+ /*
+ * XXX HACK: currently probe does not get called, but the port needs to be added to work.
+ */
+ uart_add_one_port(&ubi32_mailbox_reg, &ubi32_mailbox_ports[0].port);
+ return ret;
+}
+
+static void __exit ubi32_mailbox_exit(void)
+{
+ platform_driver_unregister(&ubi32_mailbox_driver);
+ uart_unregister_driver(&ubi32_mailbox_reg);
+}
+
+module_init(ubi32_mailbox_init);
+module_exit(ubi32_mailbox_exit);
+
+MODULE_ALIAS_CHARDEV_MAJOR(UBI32_MAILBOX_MAJOR);
+MODULE_ALIAS("platform:ubi32_mailbox");
diff --git a/target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c b/target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c
new file mode 100644
index 0000000..79037da
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/serial/ubi32_serdes.c
@@ -0,0 +1,817 @@
+/*
+ * drivers/serial/ubi32_serdes.c
+ * Ubicom32 On-Chip Serial Driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/platform_device.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_core.h>
+
+#include <asm/ip5000.h>
+#include <asm/ubicom32suart.h>
+
+
+#define SERIAL_UBICOM_PIN_RXD (1 << 0)
+#define SERIAL_UBICOM_PIN_TXD (1 << 6)
+#define SERIAL_UBICOM_CTL0 0x8b300000
+#define SERIAL_UBICOM_CTL1 0x00000009
+
+#define SERIAL_UBICOM_DATA_BIT 8 /* Fixed parameter - do not change */
+#define SERIAL_UBICOM_PAR_BIT 0 /* Fixed parameter - do not change */
+#define SERIAL_UBICOM_STOP_BIT 1 /* Fixed parameter - do not change */
+
+/* UART name and device definitions */
+#define UBI32_SERDES_NAME "ttyUS" // XXX
+#define UBI32_SERDES_MAJOR 206 // XXX
+#define UBI32_SERDES_MINOR 64 // XXX
+
+#define PORT_UBI32_SERDES 1234
+#define NR_PORTS 1
+
+struct uart_port ubi32_serdes_ports[NR_PORTS];
+
+struct ubi32_serdes_resource {
+ void *uart_base_addr;
+ int uart_irq;
+ int uart_clock;
+} ubi32_serdes_resource[NR_PORTS] = {
+ /*
+ * Get params from kernel command line (required for early printk)
+ * or from platform resources.
+ */
+ {0, 0, 0}
+};
+
+/*
+ * Can get overridden by 'serdes=' kernel command line.
+ */
+static int ubi32_serdes_default_baud_rate = 115200;
+
+
+#define IO_PORT(port) ((struct ubicom32_io_port *)port->membase)
+#define IO_PORT_INT_STATUS(port) (IO_PORT(port)->int_status)
+#define IO_PORT_INT_MASK(port) (IO_PORT(port)->int_mask)
+#define IO_PORT_INT_CLR(port) (IO_PORT(port)->int_clr)
+
+
+/*
+ * ubi32_serdes_get_char()
+ */
+static u8_t ubi32_serdes_get_char(struct ubicom32_io_port *io_port)
+{
+ /*
+ * Read from hardware (forced 32-bit atomic read).
+ */
+ u32_t data = 0;
+
+ if ( io_port ) {
+ io_port->int_clr = IO_PORTX_INT_SERDES_RXBF;
+ asm volatile (
+ "move.4 %0, %1 \n\t"
+ : "=r" (data)
+ : "m" (*(u32_t *)&(io_port->rx_fifo))
+ );
+ }
+
+ return (u8_t)(data & 0x000000ff);
+}
+
+/*
+ * ubi32_serdes_put_char()
+ */
+static void ubi32_serdes_put_char(struct ubicom32_io_port *io_port, u8_t c)
+{
+ u32_t data = 0x0000fe00 | (c << 1);
+
+ if ( io_port ) {
+ /*
+ * Fixed data format:
+ * [LSB]1 start bit - 8 data bits - no parity - 1 stop bit[MSB]
+ */
+ io_port->int_clr = IO_PORTX_INT_SERDES_TXBE;
+ io_port->ctl2 = data;
+ io_port->int_set = IO_PORTX_INT_SERDES_TXBUF_VALID;
+ }
+}
+
+static void ubi32_serdes_hw_init(struct uart_port *port, int baud)
+{
+ struct ubicom32_io_port *io_port = IO_PORT(port);
+
+ if ( io_port ) {
+ /*
+ * Put port functions 1-4 into reset state.
+ * Function 0 (GPIO) does not need or have a reset bit.
+ *
+ * Select SERDES function for restart below.
+ */
+ io_port->function =
+ IO_FUNC_FUNCTION_RESET(1) | IO_FUNC_FUNCTION_RESET(2) |
+ IO_FUNC_FUNCTION_RESET(3) | IO_FUNC_FUNCTION_RESET(4) |
+ IO_PORTX_FUNC_SERDES;
+
+ /*
+ * Configure SERDES baudrate
+ */
+ if ( baud == 0 ) {
+ baud = ubi32_serdes_default_baud_rate;
+ }
+
+ io_port->ctl0 =
+ SERIAL_UBICOM_CTL0 |
+ ((port->uartclk / (16 * baud)) - 1);
+
+ io_port->ctl1 =
+ SERIAL_UBICOM_CTL1;
+
+ /*
+ * don't interrupt until startup and start_tx
+ */
+ io_port->int_mask = 0;
+
+ /*
+ * Set TXD pin output, RXD input and prevent GPIO
+ * override on the TXD & RXD pins
+ */
+ io_port->gpio_ctl &= ~SERIAL_UBICOM_PIN_RXD;
+ io_port->gpio_ctl |= SERIAL_UBICOM_PIN_TXD;
+ io_port->gpio_mask &= ~(SERIAL_UBICOM_PIN_RXD | SERIAL_UBICOM_PIN_TXD);
+
+ /*
+ * Restart (un-reset) the port's SERDES function.
+ */
+ io_port->function &= ~(IO_FUNC_FUNCTION_RESET(IO_PORTX_FUNC_SERDES));
+ }
+}
+
+#define ULITE_STATUS_RXVALID IO_PORTX_INT_SERDES_RXBF
+#define ULITE_STATUS_OVERRUN 0
+#define ULITE_STATUS_FRAME 0
+#define ULITE_STATUS_PARITY 0
+#define ULITE_STATUS_TXEMPTY IO_PORTX_INT_SERDES_TXBE
+#define ULITE_STATUS_TXFULL 0
+
+static int ubi32_serdes_receive(struct uart_port *port, int stat)
+{
+ struct tty_struct *tty = port->info->port.tty;
+ unsigned char ch = 0;
+ char flag = TTY_NORMAL;
+
+ if ((stat & (ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN
+ | ULITE_STATUS_FRAME)) == 0)
+ return 0;
+
+ /* stats */
+ if (stat & ULITE_STATUS_RXVALID) {
+ port->icount.rx++;
+ ch = ubi32_serdes_get_char((struct ubicom32_io_port *)port->membase);
+
+ if (stat & ULITE_STATUS_PARITY)
+ port->icount.parity++;
+ }
+
+ if (stat & ULITE_STATUS_OVERRUN)
+ port->icount.overrun++;
+
+ if (stat & ULITE_STATUS_FRAME)
+ port->icount.frame++;
+
+
+ /* drop byte with parity error if IGNPAR specificed */
+ if (stat & port->ignore_status_mask & ULITE_STATUS_PARITY)
+ stat &= ~ULITE_STATUS_RXVALID;
+
+ stat &= port->read_status_mask;
+
+ if (stat & ULITE_STATUS_PARITY)
+ flag = TTY_PARITY;
+
+ stat &= ~port->ignore_status_mask;
+
+ if (stat & ULITE_STATUS_RXVALID)
+ tty_insert_flip_char(tty, ch, flag);
+
+ if (stat & ULITE_STATUS_FRAME)
+ tty_insert_flip_char(tty, 0, TTY_FRAME);
+
+ if (stat & ULITE_STATUS_OVERRUN)
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
+ return 1;
+}
+
+/*
+ * interrupts are disabled on entry
+ */
+static void ubi32_serdes_stop_tx(struct uart_port *port)
+{
+ IO_PORT_INT_MASK(port) = IO_PORT_INT_MASK(port) & ~IO_PORTX_INT_SERDES_TXBE;
+}
+
+static int ubi32_serdes_transmit(struct uart_port *port, int stat)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+
+ if (!(stat & IO_PORTX_INT_SERDES_TXBE))
+ return 0;
+
+ if (port->x_char) {
+ ubi32_serdes_put_char(IO_PORT(port), port->x_char);
+ port->x_char = 0;
+ port->icount.tx++;
+ return 1;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ ubi32_serdes_stop_tx(port);
+ return 0;
+ }
+
+ ubi32_serdes_put_char(IO_PORT(port), xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1);
+ port->icount.tx++;
+
+ /* wake up */
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+
+ if (uart_circ_empty(xmit))
+ ubi32_serdes_stop_tx(port);
+
+ return 1;
+}
+
+/*
+ * port is locked and interrupts are disabled
+ */
+static void ubi32_serdes_start_tx(struct uart_port *port)
+{
+ IO_PORT_INT_MASK(port) = IO_PORT_INT_MASK(port) | IO_PORTX_INT_SERDES_TXBE;
+ ubi32_serdes_transmit(port, IO_PORT_INT_STATUS(port));
+}
+
+/*
+ * Interrupts are enabled
+ */
+static void ubi32_serdes_stop_rx(struct uart_port *port)
+{
+ /* don't forward any more data (like !CREAD) */
+ port->ignore_status_mask = IO_PORTX_INT_SERDES_RXBF;
+}
+
+/*
+ * Set the modem control timer to fire immediately.
+ */
+static void ubi32_serdes_enable_ms(struct uart_port *port)
+{
+ /* N/A */
+}
+
+static irqreturn_t ubi32_serdes_isr(int irq, void *dev_id)
+{
+ struct uart_port *port = dev_id;
+ int busy;
+
+ spin_lock(&port->lock);
+
+ do {
+ int stat = IO_PORT_INT_STATUS(port);
+ busy = ubi32_serdes_receive(port, stat);
+ busy |= ubi32_serdes_transmit(port, stat);
+ } while (busy);
+
+ tty_flip_buffer_push(port->info->port.tty);
+
+ spin_unlock(&port->lock);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * Return TIOCSER_TEMT when transmitter is not busy.
+ */
+static unsigned int ubi32_serdes_tx_empty(struct uart_port *port)
+{
+ unsigned long flags;
+ unsigned int ret;
+
+ spin_lock_irqsave(&port->lock, flags);
+ ret = IO_PORT_INT_STATUS(port);
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ return ret & ULITE_STATUS_TXEMPTY ? TIOCSER_TEMT : 0;
+}
+
+static unsigned int ubi32_serdes_get_mctrl(struct uart_port *port)
+{
+ return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+}
+
+static void ubi32_serdes_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ /* N/A */
+}
+
+/*
+ * Interrupts are always disabled.
+ */
+static void ubi32_serdes_break_ctl(struct uart_port *port, int break_state)
+{
+ /* N/A */
+}
+
+static int ubi32_serdes_startup(struct uart_port *port)
+{
+ if (request_irq(port->irq, ubi32_serdes_isr, IRQF_DISABLED,
+ "UBI32_SERDES", port)) {
+ printk(KERN_NOTICE "Unable to attach port interrupt\n");
+ return -EBUSY;
+ }
+
+ IO_PORT_INT_CLR(port) = IO_PORTX_INT_SERDES_RXBF;
+ IO_PORT_INT_MASK(port) = IO_PORTX_INT_SERDES_RXBF;
+ return 0;
+}
+
+static void ubi32_serdes_shutdown(struct uart_port *port)
+{
+ struct ubi32_serdes_port *uart = (struct ubi32_serdes_port *)port;
+
+ IO_PORT_INT_MASK(port) = 0;
+ free_irq(port->irq, uart);
+}
+
+static void
+ubi32_serdes_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
+{
+ unsigned long flags;
+ unsigned int baud;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ port->read_status_mask = ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN
+ | ULITE_STATUS_TXFULL;
+
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |=
+ ULITE_STATUS_PARITY | ULITE_STATUS_FRAME;
+
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= ULITE_STATUS_PARITY
+ | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN;
+
+ /* ignore all characters if CREAD is not set */
+ if ((termios->c_cflag & CREAD) == 0)
+ port->ignore_status_mask |=
+ ULITE_STATUS_RXVALID | ULITE_STATUS_PARITY
+ | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN;
+
+ /* update timeout */
+ baud = uart_get_baud_rate(port, termios, old, 0, 460800);
+ uart_update_timeout(port, termios->c_cflag, baud);
+
+ IO_PORT(port)->ctl0 = SERIAL_UBICOM_CTL0 |
+ ((port->uartclk / (16 * baud)) - 1);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static const char *ubi32_serdes_type(struct uart_port *port)
+{
+ return port->type == PORT_UBI32_SERDES ? "UBI32_SERDES" : NULL;
+}
+
+/*
+ * Release the memory region(s) being used by 'port'.
+ */
+static void ubi32_serdes_release_port(struct uart_port *port)
+{
+}
+
+/*
+ * Request the memory region(s) being used by 'port'.
+ */
+static int ubi32_serdes_request_port(struct uart_port *port)
+{
+ return 0;
+}
+
+/*
+ * Configure/autoconfigure the port.
+ */
+static void ubi32_serdes_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE &&
+ ubi32_serdes_request_port(port) == 0)
+ port->type = PORT_UBI32_SERDES;
+}
+
+/*
+ * Verify the new serial_struct (for TIOCSSERIAL).
+ * The only change we allow are to the flags and type, and
+ * even then only between PORT_UBI32_SERDES and PORT_UNKNOWN
+ */
+static int
+ubi32_serdes_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ return 0;
+}
+
+static struct uart_ops ubi32_serdes_pops = {
+ .tx_empty = ubi32_serdes_tx_empty,
+ .set_mctrl = ubi32_serdes_set_mctrl,
+ .get_mctrl = ubi32_serdes_get_mctrl,
+ .stop_tx = ubi32_serdes_stop_tx,
+ .start_tx = ubi32_serdes_start_tx,
+ .stop_rx = ubi32_serdes_stop_rx,
+ .enable_ms = ubi32_serdes_enable_ms,
+ .break_ctl = ubi32_serdes_break_ctl,
+ .startup = ubi32_serdes_startup,
+ .shutdown = ubi32_serdes_shutdown,
+ .set_termios = ubi32_serdes_set_termios,
+ .type = ubi32_serdes_type,
+ .release_port = ubi32_serdes_release_port,
+ .request_port = ubi32_serdes_request_port,
+ .config_port = ubi32_serdes_config_port,
+ .verify_port = ubi32_serdes_verify_port,
+};
+
+static void __init ubi32_serdes_init_ports(void)
+{
+ int i;
+
+ for (i = 0; i < NR_PORTS; i++) {
+ ubi32_serdes_ports[i].uartclk = ubi32_serdes_resource[i].uart_clock;
+ ubi32_serdes_ports[i].ops = &ubi32_serdes_pops;
+ ubi32_serdes_ports[i].line = i;
+ ubi32_serdes_ports[i].iotype = UPIO_MEM;
+ ubi32_serdes_ports[i].membase =
+ (void __iomem *)ubi32_serdes_resource[i].uart_base_addr;
+ ubi32_serdes_ports[i].mapbase =
+ (resource_size_t)ubi32_serdes_resource[i].uart_base_addr;
+ ubi32_serdes_ports[i].irq =
+ ubi32_serdes_resource[i].uart_irq;
+ ubi32_serdes_ports[i].flags = UPF_BOOT_AUTOCONF;
+
+ ubi32_serdes_hw_init(&ubi32_serdes_ports[i], 0);
+ }
+
+}
+
+#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE
+/*
+ * If the port was already initialised (eg, by a boot loader),
+ * try to determine the current setup.
+ */
+static void __init
+ubi32_serdes_console_get_options(struct uart_port *port, int *baud)
+{
+ u32 round_to = 1200;
+ u32 real_baud;
+
+ /*
+ * We might get called before platform init and with no
+ * kernel command line options, so port might be NULL.
+ */
+ *baud = ubi32_serdes_default_baud_rate;;
+ if ( IO_PORT(port) == 0 )
+ return;
+
+ real_baud = port->uartclk
+ / (16 * ((IO_PORT(port)->ctl0 & ~SERIAL_UBICOM_CTL0) + 1));
+
+ *baud = ((real_baud + round_to - 1) / round_to) * round_to;
+
+ pr_debug("%s:baud = %d, real_baud = %d\n", __FUNCTION__, *baud, real_baud);
+}
+#endif
+
+#if defined(CONFIG_SERIAL_UBI32_SERDES_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
+static struct uart_driver ubi32_serdes_reg;
+
+static int __init
+ubi32_serdes_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE
+ int baud = ubi32_serdes_default_baud_rate;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+#endif
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index == -1 || co->index >= NR_PORTS)
+ co->index = 0;
+ port = &ubi32_serdes_ports[co->index];
+
+#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE
+ if (options) {
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ ubi32_serdes_hw_init(port, baud);
+ }
+ else
+ ubi32_serdes_console_get_options(port, &baud);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+#else
+ return 0;
+#endif
+}
+#endif /* defined (CONFIG_SERIAL_UBI32_SERDES_CONSOLE) ||
+ defined (CONFIG_EARLY_PRINTK) */
+
+#ifdef CONFIG_SERIAL_UBI32_SERDES_CONSOLE
+static void
+ubi32_serdes_console_putchar(struct uart_port *port, int ch)
+{
+ if ( IO_PORT(port) ) {
+ while (!(IO_PORT_INT_STATUS(port) & IO_PORTX_INT_SERDES_TXBE))
+ barrier();
+ ubi32_serdes_put_char(IO_PORT(port), ch);
+ }
+}
+
+/*
+ * Interrupts are disabled on entering
+ */
+static void
+ubi32_serdes_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct uart_port *port = &ubi32_serdes_ports[co->index];
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&port->lock, flags);
+ uart_console_write(port, s, count, ubi32_serdes_console_putchar);
+ spin_unlock_irqrestore(&port->lock, flags);
+
+}
+
+static struct console ubi32_serdes_console = {
+ .name = UBI32_SERDES_NAME,
+ .write = ubi32_serdes_console_write,
+ .device = uart_console_device,
+ .setup = ubi32_serdes_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &ubi32_serdes_reg,
+};
+
+static int __init ubi32_serdes_console_init(void)
+{
+ ubi32_serdes_init_ports();
+ register_console(&ubi32_serdes_console);
+ return 0;
+}
+console_initcall(ubi32_serdes_console_init);
+
+#define UBI32_SERDES_CONSOLE &ubi32_serdes_console
+#else
+#define UBI32_SERDES_CONSOLE NULL
+#endif /* CONFIG_SERIAL_UBI32_SERDES_CONSOLE */
+
+
+#ifdef CONFIG_EARLY_PRINTK
+static __init void ubi32_serdes_early_putc(struct uart_port *port, int ch)
+{
+ unsigned timeout = 0xffff;
+
+ while ((!(IO_PORT_INT_STATUS(port) & IO_PORTX_INT_SERDES_TXBE)) && --timeout)
+ cpu_relax();
+ ubi32_serdes_put_char(IO_PORT(port), ch);
+}
+
+static __init void ubi32_serdes_early_write(struct console *con, const char *s,
+ unsigned int n)
+{
+ struct uart_port *port = &ubi32_serdes_ports[con->index];
+ unsigned int i;
+
+ for (i = 0; i < n; i++, s++) {
+ if (*s == '\n')
+ ubi32_serdes_early_putc(port, '\r');
+ ubi32_serdes_early_putc(port, *s);
+ }
+}
+
+static struct __init console ubi32_serdes_early_console = {
+ .name = "early_US",
+ .write = ubi32_serdes_early_write,
+ .device = uart_console_device,
+ .flags = CON_PRINTBUFFER,
+ .setup = ubi32_serdes_console_setup,
+ .index = -1,
+ .data = &ubi32_serdes_reg,
+};
+
+/*
+ * XXX Unused in our driver. Need to find out what the termios initialization is good/needed for.
+ */
+struct console __init *ubi32_serdes_early_init(unsigned int port_index,
+ unsigned int cflag)
+{
+ struct uart_port *uart;
+ struct ktermios t;
+
+ if (port_index == -1 || port_index >= NR_PORTS)
+ port_index = 0;
+ ubi32_serdes_init_ports();
+ ubi32_serdes_early_console.index = port_index;
+ uart = &ubi32_serdes_ports[port_index];
+ t.c_cflag = cflag;
+ t.c_iflag = 0;
+ t.c_oflag = 0;
+ t.c_lflag = ICANON;
+ t.c_line = port_index;
+ ubi32_serdes_set_termios(uart, &t, &t);
+ return &ubi32_serdes_early_console;
+}
+
+#endif /* CONFIG_SERIAL_UBI32_SERDES_CONSOLE */
+
+static struct uart_driver ubi32_serdes_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = "ubi32_serdes",
+ .dev_name = UBI32_SERDES_NAME,
+ .major = UBI32_SERDES_MAJOR,
+ .minor = UBI32_SERDES_MINOR,
+ .nr = NR_PORTS,
+ .cons = UBI32_SERDES_CONSOLE,
+};
+
+static int ubi32_serdes_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct uart_port *port = platform_get_drvdata(dev);
+
+ if (port)
+ uart_suspend_port(&ubi32_serdes_reg, port);
+
+ return 0;
+}
+
+static int ubi32_serdes_resume(struct platform_device *dev)
+{
+ struct uart_port *port = platform_get_drvdata(dev);
+
+ if (port)
+ uart_resume_port(&ubi32_serdes_reg, port);
+
+ return 0;
+}
+
+static int ubi32_serdes_probe(struct platform_device *dev)
+{
+ struct resource *res = dev->resource;
+ int i;
+
+ for (i = 0; i < dev->num_resources; i++, res++) {
+ if (res->flags & IORESOURCE_MEM) {
+ ubi32_serdes_resource[0].uart_base_addr = (void *) res->start;
+ }
+ else if (res->flags & IORESOURCE_IRQ) {
+ ubi32_serdes_resource[0].uart_irq = res->start;
+ }
+ else if (res->flags & UBICOM32_SUART_IORESOURCE_CLOCK) {
+ ubi32_serdes_resource[0].uart_clock = res->start;
+ }
+ }
+
+ ubi32_serdes_init_ports();
+
+ return 0;
+}
+
+static int ubi32_serdes_remove(struct platform_device *pdev)
+{
+ struct uart_port *port = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (port)
+ uart_remove_one_port(&ubi32_serdes_reg, port);
+
+ return 0;
+}
+
+static struct platform_driver ubi32_serdes_driver = {
+ .remove = ubi32_serdes_remove,
+ .suspend = ubi32_serdes_suspend,
+ .resume = ubi32_serdes_resume,
+ .driver = {
+ .name = "ubicom32suart",
+ .owner = THIS_MODULE,
+ },
+};
+
+
+#ifndef MODULE
+/*
+ * Called at boot time.
+ *
+ * You can specify IO base, IRQ, and clock for the serdes serial port
+ * using kernel command line "serdes=0xiobase,irq,clock". Values
+ * specified will be overwritten by platform device data, if present.
+ */
+static int __init ubi32_serdes_setup(char *str)
+{
+#define N_PARMS (4+1)
+ int ints[N_PARMS];
+ int i;
+
+ str = get_options(str, ARRAY_SIZE(ints), ints);
+
+ for (i = 0; i < N_PARMS; i++) {
+ if (i < ints[0]) {
+ if (i == 0) {
+ ubi32_serdes_resource[0].uart_base_addr = (void *) ints[i+1];
+ }
+ else if (i == 1) {
+ ubi32_serdes_resource[0].uart_irq = ints[i+1];
+ }
+ else if (i == 2) {
+ ubi32_serdes_resource[0].uart_clock = ints[i+1];
+ }
+ else if (i == 3) {
+ ubi32_serdes_default_baud_rate = ints[i+1];
+ }
+ }
+ }
+ return 1;
+}
+
+__setup("serdes=", ubi32_serdes_setup);
+#endif
+
+static int __init ubi32_serdes_init(void)
+{
+ int ret;
+
+ pr_info("Serial: Ubicom32 serdes uart serial driver\n");
+
+ ret = platform_driver_probe(&ubi32_serdes_driver, ubi32_serdes_probe);
+ if (ret != 0) {
+ printk(KERN_INFO "serdes platform_driver_probe() failed: %d\n", ret);
+ return ret;
+ }
+
+ ubi32_serdes_init_ports();
+
+ ret = uart_register_driver(&ubi32_serdes_reg);
+ if ( ret == 0 ) {
+ ret = uart_add_one_port(&ubi32_serdes_reg, &ubi32_serdes_ports[0]);
+ if ( ret != 0 ) {
+ uart_unregister_driver(&ubi32_serdes_reg);
+ }
+ }
+
+ return ret;
+}
+
+static void __exit ubi32_serdes_exit(void)
+{
+ platform_driver_unregister(&ubi32_serdes_driver);
+ uart_unregister_driver(&ubi32_serdes_reg);
+}
+
+module_init(ubi32_serdes_init);
+module_exit(ubi32_serdes_exit);
+
+MODULE_AUTHOR("Rainer Keller <rkeller@ubicom.com>");
+MODULE_DESCRIPTION("Ubicom generic serial port driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CHARDEV_MAJOR(UBI32_SERDES_MAJOR);
+MODULE_ALIAS("platform:ubi32_serdes");
diff --git a/target/linux/ubicom32/files/drivers/serial/ubi32_uarttio.c b/target/linux/ubicom32/files/drivers/serial/ubi32_uarttio.c
new file mode 100644
index 0000000..7aa3742
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/serial/ubi32_uarttio.c
@@ -0,0 +1,1172 @@
+/*
+ * drivers/serial/ubi32_uarttio.c
+ * Ubicom32 Serial Virtual Peripherial Driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/platform_device.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_core.h>
+
+#include <asm/ip5000.h>
+#include <asm/gpio.h>
+#include <asm/thread.h>
+#include <asm/uart_tio.h>
+
+#define DRIVER_NAME "ubi32_uarttio"
+
+/*
+ * For storing the module parameters.
+ */
+#define UBI32_UARTTIO_MAX_PARAM_LEN 80
+static char utio_ports_param[UBI32_UARTTIO_MAX_PARAM_LEN];
+
+/*
+ * UART name and device definitions
+ */
+#define UBI32_UARTTIO_NAME "ttyUV" // XXX
+#define UBI32_UARTTIO_MAJOR 206 // XXX
+#define UBI32_UARTTIO_MINOR 64 // XXX
+
+/*
+ * The following structures are allocated statically because the
+ * memory allocation subsystem is not initialized this early on
+ */
+
+/*
+ * Per port structure
+ */
+struct ubi32_uarttio_port {
+ struct uarttio_uart *uart;
+ unsigned int tx_pin;
+ unsigned int rx_pin;
+
+ struct uart_port port;
+
+ u8_t added;
+
+ /*
+ * If this value is set, the port has had its direction set already
+ */
+ u8_t port_init;
+};
+static struct ubi32_uarttio_port uarttio_ports[CONFIG_SERIAL_UBI32_UARTTIO_NR_UARTS];
+
+/*
+ * Number of ports currently initialized
+ */
+static int uarttio_nports;
+
+/*
+ * Per device structure
+ */
+struct ubi32_uarttio_instance {
+ struct uarttio_regs *regs;
+ struct ubi32_uarttio_port *ports;
+
+ u8_t irq_requested;
+ u8_t driver_registered;
+ u8_t irq;
+};
+static struct ubi32_uarttio_instance uarttio_inst;
+
+#ifdef CONFIG_SERIAL_UBI32_UARTTIO_CONSOLE
+static struct console ubi32_uarttio_console;
+#define UBI32_UARTTIO_CONSOLE &ubi32_uarttio_console
+#else
+#define UBI32_UARTTIO_CONSOLE NULL
+#endif
+
+static struct uart_driver ubi32_uarttio_uart_driver = {
+ .owner = THIS_MODULE,
+ .driver_name = DRIVER_NAME,
+ .dev_name = UBI32_UARTTIO_NAME,
+ .major = UBI32_UARTTIO_MAJOR,
+ .minor = UBI32_UARTTIO_MINOR,
+ .cons = UBI32_UARTTIO_CONSOLE,
+};
+
+#ifdef UBI32_UARTTIO_UNUSED
+/*
+ * ubi32_uarttio_get_send_space
+ */
+static int ubi32_uarttio_get_send_space(struct uarttio_uart *uart)
+{
+ int count = uart->tx_fifo_head - uart->tx_fifo_tail;
+ if (count < 0) {
+ count += uart->tx_fifo_size;
+ }
+ return uart->tx_fifo_size - count;
+}
+#endif
+
+/*
+ * ubi32_uarttio_get_recv_ready
+ */
+static int ubi32_uarttio_get_recv_ready(struct uarttio_uart *uart)
+{
+ int count = uart->rx_fifo_head - uart->rx_fifo_tail;
+ if (count < 0) {
+ count += uart->rx_fifo_size;
+ }
+ return count;
+}
+
+/*
+ * ubi32_uarttio_get_char()
+ */
+static u8_t ubi32_uarttio_get_char(struct uarttio_uart *uart)
+{
+ /*
+ * Retrieve byte
+ */
+ u32_t tail = uart->rx_fifo_tail;
+ u8_t data = uart->rx_fifo[tail];
+
+ if (++tail == uart->rx_fifo_size) {
+ tail = 0;
+ }
+ uart->rx_fifo_tail = tail;
+
+ return data;
+}
+
+/*
+ * ubi32_uarttio_put_char()
+ */
+static int ubi32_uarttio_put_char(struct uarttio_uart *uart, u8_t c)
+{
+ u32_t head = uart->tx_fifo_head;
+ u32_t prev = head;
+
+ /*
+ * Wrap
+ */
+ if (++head == uart->tx_fifo_size) {
+ head = 0;
+ }
+
+ /*
+ * If there isn't any space, return EBUSY
+ */
+ if (head == uart->tx_fifo_tail) {
+ return -EBUSY;
+ }
+
+ /*
+ * Put the character in the queue
+ */
+ uart->tx_fifo[prev] = c;
+ uart->tx_fifo_head = head;
+
+ return 0;
+}
+
+/*
+ * ubi32_uarttio_set_baud
+ */
+static int ubi32_uarttio_set_baud(struct ubi32_uarttio_port *uup, unsigned int baud)
+{
+ if (uup->uart->current_baud_rate == baud) {
+ return 0;
+ }
+
+ uup->uart->baud_rate = baud;
+ uup->uart->flags |= UARTTIO_UART_FLAG_SET_RATE;
+ while (uup->uart->flags & UARTTIO_UART_FLAG_SET_RATE) {
+ cpu_relax();
+ }
+
+ if (uup->uart->current_baud_rate != baud) {
+ /*
+ * Failed to set baud rate
+ */
+ printk(KERN_WARNING "Invalid baud rate %u, running at %u\n", baud, uup->uart->current_baud_rate);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * ubi32_uarttio_handle_receive
+ */
+static void ubi32_uarttio_handle_receive(struct ubi32_uarttio_port *uup, int stat)
+{
+ struct uarttio_uart *uart = uup->uart;
+ struct uart_port *port = &uup->port;
+ struct tty_struct *tty = port->info->port.tty;
+ unsigned char ch = 0;
+ char flag = TTY_NORMAL;
+ int count;
+
+ if ((stat & (UARTTIO_UART_INT_RX | UARTTIO_UART_INT_RXFRAME | UARTTIO_UART_INT_RXOVF)) == 0) {
+ return;
+ }
+
+ if (stat & UARTTIO_UART_INT_RX) {
+ count = ubi32_uarttio_get_recv_ready(uart);
+ port->icount.rx += count;
+ }
+
+ if (stat & UARTTIO_UART_INT_RXOVF) {
+ port->icount.overrun++;
+ }
+
+ if (stat & UARTTIO_UART_INT_RXFRAME) {
+ port->icount.frame++;
+ }
+
+ stat &= ~port->ignore_status_mask;
+
+ if (stat & UARTTIO_UART_INT_RX) {
+ int i;
+ for (i = 0; i < count; i++) {
+ ch = ubi32_uarttio_get_char(uart);
+ tty_insert_flip_char(tty, ch, flag);
+ }
+ }
+
+ if (stat & UARTTIO_UART_INT_RXFRAME) {
+ tty_insert_flip_char(tty, 0, TTY_FRAME);
+ }
+
+ if (stat & UARTTIO_UART_INT_RXOVF) {
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ }
+}
+
+/*
+ * ubi32_uarttio_stop_tx
+ * interrupts are disabled on entry
+ */
+static void ubi32_uarttio_stop_tx(struct uart_port *port)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+
+ uup->uart->int_mask &= ~UARTTIO_UART_INT_TXBE;
+}
+
+/*
+ * ubi32_uarttio_handle_transmit
+ */
+static void ubi32_uarttio_handle_transmit(struct ubi32_uarttio_port *uup, int stat)
+{
+ struct uarttio_uart *uart = uup->uart;
+ struct uart_port *port = &uup->port;
+ struct circ_buf *xmit = &port->info->xmit;
+
+ if (!(stat & UARTTIO_UART_INT_TXBE)) {
+ return;
+ }
+
+ if (port->x_char) {
+ if (ubi32_uarttio_put_char(uart, port->x_char)) {
+ return;
+ }
+ port->x_char = 0;
+ port->icount.tx++;
+ return;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ ubi32_uarttio_stop_tx(port);
+ return;
+ }
+
+ /*
+ * Send as many characters as we can
+ */
+ while (ubi32_uarttio_put_char(uart, xmit->buf[xmit->tail]) == 0) {
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit)) {
+ break;
+ }
+ }
+
+ /* wake up */
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) {
+ uart_write_wakeup(port);
+ }
+
+ if (uart_circ_empty(xmit)) {
+ ubi32_uarttio_stop_tx(port);
+ }
+}
+
+/*
+ * ubi32_uarttio_start_tx
+ * port is locked and interrupts are disabled
+ */
+static void ubi32_uarttio_start_tx(struct uart_port *port)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+ struct uarttio_uart *uart = uup->uart;
+
+ uart->int_mask |= UARTTIO_UART_INT_TXBE;
+}
+
+/*
+ * ubi32_uarttio_stop_rx
+ * Interrupts are enabled
+ */
+static void ubi32_uarttio_stop_rx(struct uart_port *port)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+ struct uarttio_uart *uart = uup->uart;
+
+ /*
+ * don't forward any more data (like !CREAD)
+ */
+ uart->int_mask &= ~UARTTIO_UART_INT_RX;
+ port->ignore_status_mask = UARTTIO_UART_INT_RX;
+}
+
+/*
+ * ubi32_uarttio_enable_ms
+ * Set the modem control timer to fire immediately.
+ */
+static void ubi32_uarttio_enable_ms(struct uart_port *port)
+{
+ /* N/A */
+}
+
+/*
+ * ubi32_uarttio_isr
+ */
+static irqreturn_t ubi32_uarttio_isr(int irq, void *appdata)
+{
+ struct ubi32_uarttio_port *uup = uarttio_ports;
+ int i;
+
+ /*
+ * Service all of the ports
+ */
+ for (i = 0; i < uarttio_nports; i++) {
+ unsigned int flags;
+
+ if (!(uup->uart->flags & UARTTIO_UART_FLAG_ENABLED)) {
+ uup++;
+ continue;
+ }
+
+ spin_lock(&uup->port.lock);
+
+ flags = uup->uart->int_flags;
+
+ uup->uart->int_flags = 0;
+
+ ubi32_uarttio_handle_receive(uup, flags);
+ ubi32_uarttio_handle_transmit(uup, flags);
+
+ tty_flip_buffer_push(uup->port.info->port.tty);
+
+ spin_unlock(&uup->port.lock);
+
+ uup++;
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * ubi32_uarttio_tx_empty
+ * Return TIOCSER_TEMT when transmitter is not busy.
+ */
+static unsigned int ubi32_uarttio_tx_empty(struct uart_port *port)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+
+ if (uup->uart->tx_fifo_head == uup->uart->tx_fifo_tail) {
+ return TIOCSER_TEMT;
+ }
+
+ return 0;
+}
+
+/*
+ * ubi32_uarttio_get_mctrl
+ */
+static unsigned int ubi32_uarttio_get_mctrl(struct uart_port *port)
+{
+ return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+}
+
+/*
+ * ubi32_uarttio_set_mctrl
+ */
+static void ubi32_uarttio_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ /* N/A */
+}
+
+/*
+ * ubi32_uarttio_break_ctl
+ */
+static void ubi32_uarttio_break_ctl(struct uart_port *port, int break_state)
+{
+ /* N/A */
+}
+
+/*
+ * ubi32_uarttio_startup
+ */
+static int ubi32_uarttio_startup(struct uart_port *port)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+ struct uarttio_uart *uart = uup->uart;
+
+ uart->flags |= UARTTIO_UART_FLAG_ENABLED;
+
+ uart->int_mask |= UARTTIO_UART_INT_TXBE | UARTTIO_UART_INT_RX;
+
+ return 0;
+}
+
+/*
+ * ubi32_uarttio_shutdown
+ */
+static void ubi32_uarttio_shutdown(struct uart_port *port)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+ struct uarttio_uart *uart = uup->uart;
+
+ uart->int_mask = 0;
+ uart->flags &= ~UARTTIO_UART_FLAG_ENABLED;
+}
+
+/*
+ * ubi32_uarttio_set_termios
+ */
+static void ubi32_uarttio_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermios *old)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+ unsigned long flags;
+ unsigned int baud;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+#if 0
+ port->read_status_mask = UBI32_UARTTIO_RX | UBI32_UARTTIO_RXOVF | UBI32_UARTTIO_TXOVF;
+
+ if (termios->c_iflag & INPCK) {
+ port->read_status_mask |= UBI32_UARTTIO_RXFRAME;
+ }
+#endif
+
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR) {
+ port->ignore_status_mask |= UARTTIO_UART_INT_RXFRAME |
+ UARTTIO_UART_INT_RXOVF;
+ }
+
+ /*
+ * ignore all characters if CREAD is not set
+ */
+ if ((termios->c_cflag & CREAD) == 0) {
+ port->ignore_status_mask |= UARTTIO_UART_INT_RX |
+ UARTTIO_UART_INT_RXFRAME |
+ UARTTIO_UART_INT_RXOVF;
+ }
+
+ /* update timeout */
+ baud = uart_get_baud_rate(port, termios, old, 0, 460800);
+ uart_update_timeout(port, termios->c_cflag, baud);
+
+ ubi32_uarttio_set_baud(uup, baud);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+/*
+ * ubi32_uarttio_type
+ */
+static const char *ubi32_uarttio_type(struct uart_port *port)
+{
+ return (port->type == PORT_UBI32_UARTTIO) ? "UBI32_UARTTIO" : NULL;
+}
+
+/*
+ * ubi32_uarttio_release_port
+ * Release the memory region(s) being used by 'port'.
+ */
+static void ubi32_uarttio_release_port(struct uart_port *port)
+{
+}
+
+/*
+ * ubi32_uarttio_request_port
+ * Request the memory region(s) being used by 'port'.
+ */
+static int ubi32_uarttio_request_port(struct uart_port *port)
+{
+ return 0;
+}
+
+/*
+ * ubi32_uarttio_config_port
+ * Configure/autoconfigure the port.
+ */
+static void ubi32_uarttio_config_port(struct uart_port *port, int flags)
+{
+ if ((flags & UART_CONFIG_TYPE) && (ubi32_uarttio_request_port(port) == 0)) {
+ port->type = PORT_UBI32_UARTTIO;
+ }
+}
+
+/*
+ * ubi32_uarttio_verify_port
+ * Verify the new serial_struct (for TIOCSSERIAL).
+ *
+ * The only change we allow are to the flags and type, and
+ * even then only between PORT_UBI32_UARTTIO and PORT_UNKNOWN
+ */
+static int ubi32_uarttio_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ return 0;
+}
+
+static struct uart_ops ubi32_uarttio_pops = {
+ .tx_empty = ubi32_uarttio_tx_empty,
+ .set_mctrl = ubi32_uarttio_set_mctrl,
+ .get_mctrl = ubi32_uarttio_get_mctrl,
+ .stop_tx = ubi32_uarttio_stop_tx,
+ .start_tx = ubi32_uarttio_start_tx,
+ .stop_rx = ubi32_uarttio_stop_rx,
+ .enable_ms = ubi32_uarttio_enable_ms,
+ .break_ctl = ubi32_uarttio_break_ctl,
+ .startup = ubi32_uarttio_startup,
+ .shutdown = ubi32_uarttio_shutdown,
+ .set_termios = ubi32_uarttio_set_termios,
+ .type = ubi32_uarttio_type,
+ .release_port = ubi32_uarttio_release_port,
+ .request_port = ubi32_uarttio_request_port,
+ .config_port = ubi32_uarttio_config_port,
+ .verify_port = ubi32_uarttio_verify_port,
+};
+
+/*
+ * ubi32_uarttio_add_ports
+ */
+static int __init ubi32_uarttio_add_ports(void)
+{
+ int res = 0;
+ struct ubi32_uarttio_port *uup = uarttio_ports;
+ int i = 0;
+
+ for (i = 0; i < uarttio_nports; i++) {
+ /*
+ * Setup the GPIOs
+ */
+ res = gpio_request(uup->tx_pin, "ubi32_uarttio_tx");
+ if (res) {
+ printk(KERN_WARNING "Failed to request GPIO %d\n", uup->tx_pin);
+ res = -EBUSY;
+ goto next;
+ }
+
+ res = gpio_request(uup->rx_pin, "ubi32_uarttio_rx");
+ if (res) {
+ gpio_free(uup->tx_pin);
+ printk(KERN_WARNING "Failed to request GPIO %d\n", uup->rx_pin);
+ res = -EBUSY;
+ goto next;
+ }
+
+ res = uart_add_one_port(&ubi32_uarttio_uart_driver, &uup->port);
+ if (res) {
+ gpio_free(uup->rx_pin);
+ gpio_free(uup->tx_pin);
+ res = -ENODEV;
+ printk(KERN_WARNING "Failed to add port %d,%d\n", uup->tx_pin, uup->rx_pin);
+ goto next;
+ }
+ uup->added = 1;
+
+ /*
+ * Set the direction of the ports now, after we're sure that everything is ok
+ */
+ if (!uup->port_init) {
+ gpio_direction_output(uup->tx_pin, 1);
+ gpio_direction_input(uup->rx_pin);
+ }
+
+next:
+ uup++;
+ }
+ return res;
+}
+
+/*
+ * ubi32_uarttio_cleanup
+ */
+static void ubi32_uarttio_cleanup(void)
+{
+ struct ubi32_uarttio_port *uup;
+ int i;
+
+ /*
+ * Stop the hardware thread
+ */
+ if (uarttio_inst.regs) {
+ thread_disable(uarttio_inst.regs->thread);
+ }
+ if (uarttio_inst.irq_requested) {
+ free_irq(uarttio_inst.irq, NULL);
+ }
+
+ /*
+ * Get rid of the ports
+ */
+ uup = uarttio_inst.ports;
+ for (i = 0; i < uarttio_nports; i++) {
+ gpio_free(uup->tx_pin);
+ gpio_free(uup->rx_pin);
+ if (uup->added) {
+ uart_remove_one_port(&ubi32_uarttio_uart_driver, &uup->port);
+ }
+ uup++;
+ }
+
+ if (uarttio_inst.driver_registered) {
+ uart_unregister_driver(&ubi32_uarttio_uart_driver);
+ }
+}
+
+/*
+ * ubi32_uarttio_setup_port
+ * Setup a port in the TIO registers
+ */
+static int ubi32_uarttio_setup_port(int index,
+ struct uarttio_uart *uart,
+ unsigned int baud, unsigned int tx_pin,
+ unsigned int rx_pin)
+{
+ struct ubi32_uarttio_port *uup = &uarttio_ports[index];
+ void *tx_port = ubi_gpio_get_port(tx_pin);
+ void *rx_port = ubi_gpio_get_port(rx_pin);
+
+ /*
+ * Verify the ports are on chip
+ */
+ if (!tx_port || !rx_port) {
+ printk(KERN_WARNING "Invalid port(s) specified: %u or %u\n", tx_pin, rx_pin);
+ return -EINVAL;
+ }
+
+ uup->tx_pin = tx_pin;
+ uup->rx_pin = rx_pin;
+ uup->uart = uart;
+
+ /*
+ * Setup the port structure
+ */
+ uup->port.ops = &ubi32_uarttio_pops;
+ uup->port.line = index;
+ uup->port.iotype = UPIO_MEM;
+ uup->port.flags = UPF_BOOT_AUTOCONF;
+ uup->port.fifosize = uup->uart->tx_fifo_size;
+ uup->port.private_data = uup;
+
+ /*
+ * We share this IRQ across all ports
+ */
+ uup->port.irq = uarttio_inst.irq;
+
+ /*
+ * We really don't have a mem/map base but without these variables
+ * set, the serial_core won't startup.
+ */
+ uup->port.membase = (void __iomem *)uup;
+ uup->port.mapbase = (resource_size_t)uup;
+ spin_lock_init(&uup->port.lock);
+
+ /*
+ * Set up the hardware
+ */
+ uart->flags = UARTTIO_UART_FLAG_SET_RATE | UARTTIO_UART_FLAG_RESET;
+
+ uart->tx_port = (unsigned int)tx_port;
+ uart->tx_pin = gpio_pin_index(tx_pin);
+ uart->tx_bits = 8;
+ uart->tx_stop_bits = 1;
+
+ uart->rx_port = (unsigned int)rx_port;
+ uart->rx_pin = gpio_pin_index(rx_pin);
+ uart->rx_bits = 8;
+ uart->rx_stop_bits = 1;
+
+ uart->baud_rate = baud;
+
+ return 0;
+}
+
+enum ubi32_uarttio_parse_states {
+ UBI32_UARTTIO_PARSE_STATE_BAUD,
+ UBI32_UARTTIO_PARSE_STATE_TX_PIN,
+ UBI32_UARTTIO_PARSE_STATE_RX_PIN,
+ UBI32_UARTTIO_PARSE_STATE_HS,
+ UBI32_UARTTIO_PARSE_STATE_CTS_PIN,
+ UBI32_UARTTIO_PARSE_STATE_RTS_PIN,
+};
+
+/*
+ * ubi32_uarttio_parse_param
+ */
+static int ubi32_uarttio_parse_param(char *str)
+{
+ int res;
+ int i;
+ int baud = 0;
+ int tx_pin = 0;
+ int rx_pin = 0;
+ int hs = 0;
+ int cts_pin = 0;
+ int rts_pin = 0;
+ int nfound = 0;
+ enum ubi32_uarttio_parse_states state = UBI32_UARTTIO_PARSE_STATE_BAUD;
+ struct uarttio_uart *uart = uarttio_inst.regs->uarts;
+
+ /*
+ * Run though the options and generate the proper structures
+ */
+ res = get_option(&str, &i);
+ while ((res == 2) || (res == 1)) {
+ switch (state) {
+ case UBI32_UARTTIO_PARSE_STATE_BAUD:
+ /*
+ * If we are here and nfound > 0 then create the port
+ * based on the previous input
+ */
+ if (nfound) {
+ /*
+ * Create the port
+ */
+ if (ubi32_uarttio_setup_port(nfound - 1, uart, baud, tx_pin, rx_pin)) {
+ /*
+ * Port was invalid
+ */
+ goto fail;
+ } else {
+ printk(KERN_INFO "Serial port %d: tx=%d:rx=%d @ %d\n", nfound, tx_pin, rx_pin, baud);
+ uart++;
+ }
+ }
+
+ /*
+ * Reset the variables and go to the next state
+ */
+ hs = 0;
+ baud = i;
+ state = UBI32_UARTTIO_PARSE_STATE_TX_PIN;
+ break;
+
+ case UBI32_UARTTIO_PARSE_STATE_TX_PIN:
+ tx_pin = i;
+ state = UBI32_UARTTIO_PARSE_STATE_RX_PIN;
+ break;
+
+ case UBI32_UARTTIO_PARSE_STATE_RX_PIN:
+ rx_pin = i;
+ state = UBI32_UARTTIO_PARSE_STATE_HS;
+ break;
+
+ case UBI32_UARTTIO_PARSE_STATE_HS:
+ hs = i;
+ if (hs) {
+ state = UBI32_UARTTIO_PARSE_STATE_CTS_PIN;
+ break;
+ }
+
+ if (nfound == uarttio_inst.regs->max_uarts) {
+ printk(KERN_WARNING "Maximum number of serial ports reached\n");
+ goto done;
+ }
+ nfound++;
+ state = UBI32_UARTTIO_PARSE_STATE_BAUD;
+ break;
+
+ case UBI32_UARTTIO_PARSE_STATE_CTS_PIN:
+ cts_pin = i;
+ state = UBI32_UARTTIO_PARSE_STATE_RTS_PIN;
+ break;
+
+ case UBI32_UARTTIO_PARSE_STATE_RTS_PIN:
+ rts_pin = i;
+
+ if (nfound == uarttio_inst.regs->max_uarts) {
+ printk(KERN_WARNING "Maximum number of serial ports reached\n");
+ goto done;
+ }
+ nfound++;
+ state = UBI32_UARTTIO_PARSE_STATE_BAUD;
+ break;
+ }
+ res = get_option(&str, &i);
+ }
+
+ if ((res > 2) || state != UBI32_UARTTIO_PARSE_STATE_BAUD) {
+ printk(KERN_WARNING "Parameter syntax error.\n");
+ res = -EINVAL;
+ goto fail;
+ }
+
+ /*
+ * Create the final port
+ */
+ if (ubi32_uarttio_setup_port(nfound - 1, uart, baud, tx_pin, rx_pin)) {
+ goto fail;
+ }
+ printk(KERN_INFO "Serial port %d: tx=%d:rx=%d @ %d\n", nfound, tx_pin, rx_pin, baud);
+
+done:
+ uarttio_nports = nfound;
+
+ return nfound ? 0 : -ENODEV;
+
+fail:
+ /*
+ * Reset the ports
+ */
+ uart = uarttio_inst.regs->uarts;
+ for (i = 0; i < uarttio_inst.regs->max_uarts; i++) {
+ uart->flags = 0;
+ uart++;
+ }
+
+ return res;
+}
+
+/*
+ * ubi32_uarttio_probe
+ */
+static int ubi32_uarttio_probe(void)
+{
+ int ret;
+ struct uarttio_node *uart_node;
+ char *str = utio_ports_param;
+ static int probed;
+ static int probe_result;
+
+ /*
+ * We only want to be probed once, we could be probed twice
+ * for example if we are used as a console
+ */
+ if (probed) {
+ return probe_result;
+ }
+ probed = 1;
+
+ /*
+ * Extract the TIO name from the setup string
+ */
+ while (*str) {
+ if (*str == ',') {
+ *str++ = 0;
+ break;
+ }
+ str++;
+ }
+
+ if (!*str) {
+ probe_result = -EINVAL;
+ return -EINVAL;
+ }
+
+ uart_node = (struct uarttio_node *)devtree_find_node(utio_ports_param);
+ if (!uart_node) {
+ probe_result = -ENODEV;
+ return -ENODEV;
+ }
+
+ uarttio_inst.irq = uart_node->dn.recvirq;
+ uarttio_inst.regs = uart_node->regs;
+
+ /*
+ * Parse module parameters.
+ */
+ ret = ubi32_uarttio_parse_param(str);
+ if (ret != 0) {
+ ubi32_uarttio_cleanup();
+ probe_result = ret;
+ return ret;
+ }
+
+ ubi32_uarttio_uart_driver.nr = uarttio_nports;
+
+ return 0;
+}
+
+#if defined(CONFIG_SERIAL_UBI32_UARTTIO_CONSOLE)
+/*
+ * ubi32_uarttio_console_setup
+ */
+static int __init ubi32_uarttio_console_setup(struct console *co, char *options)
+{
+ int baud;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+ struct ubi32_uarttio_port *uup;
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if (co->index == -1 || co->index >= uarttio_nports) {
+ co->index = 0;
+ }
+ uup = &uarttio_ports[co->index];
+ baud = uup->uart->baud_rate;
+ uup->uart->flags |= UARTTIO_UART_FLAG_ENABLED;
+
+ /*
+ * Setup the GPIOs
+ * We have to use the direct interface because the gpio
+ * subsystem is not available at this point.
+ */
+ uup->port_init = 1;
+ UBICOM32_GPIO_SET_PIN_HIGH(uup->tx_pin);
+ UBICOM32_GPIO_SET_PIN_OUTPUT(uup->tx_pin);
+ UBICOM32_GPIO_SET_PIN_INPUT(uup->rx_pin);
+
+ /*
+ * Start the thread
+ */
+ thread_enable(uarttio_inst.regs->thread);
+
+ /*
+ * Process options
+ */
+ if (options) {
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ if (ubi32_uarttio_set_baud(uup, baud)) {
+ baud = uup->uart->current_baud_rate;
+ }
+ }
+
+ return uart_set_options(&uup->port, co, baud, 'n', 8, 'n');
+}
+
+/*
+ * ubi32_uarttio_console_putchar
+ */
+static void ubi32_uarttio_console_putchar(struct uart_port *port, int ch)
+{
+ struct ubi32_uarttio_port *uup = port->private_data;
+
+ while (ubi32_uarttio_put_char(uup->uart, ch)) {
+ cpu_relax();
+ }
+}
+
+/*
+ * ubi32_uarttio_console_write
+ * Interrupts are disabled on entering
+ */
+static void ubi32_uarttio_console_write(struct console *co, const char *s, unsigned int count)
+{
+ struct uart_port *port = &(uarttio_ports[co->index].port);
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&port->lock, flags);
+ uart_console_write(port, s, count, ubi32_uarttio_console_putchar);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static struct console ubi32_uarttio_console = {
+ .name = UBI32_UARTTIO_NAME,
+ .write = ubi32_uarttio_console_write,
+ .device = uart_console_device,
+ .setup = ubi32_uarttio_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &ubi32_uarttio_uart_driver,
+};
+
+static int __init ubi32_uarttio_console_init(void)
+{
+ int res;
+
+ res = ubi32_uarttio_probe();
+ if (res) {
+ return res;
+ }
+
+ register_console(&ubi32_uarttio_console);
+ return 0;
+}
+console_initcall(ubi32_uarttio_console_init);
+#endif /* CONFIG_SERIAL_UBI32_UARTTIO_CONSOLE */
+
+/*
+ * ubi32_serial_suspend
+ */
+static int ubi32_uarttio_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ int i;
+ for (i = 0; i < uarttio_nports; i++) {
+ uart_suspend_port(&ubi32_uarttio_uart_driver, &uarttio_ports[i].port);
+ }
+
+ return 0;
+}
+
+/*
+ * ubi32_serial_resume
+ */
+static int ubi32_uarttio_resume(struct platform_device *pdev)
+{
+ int i;
+ for (i = 0; i < uarttio_nports; i++) {
+ uart_resume_port(&ubi32_uarttio_uart_driver, &uarttio_ports[i].port);
+ }
+
+ return 0;
+}
+
+/*
+ * ubi32_uarttio_remove
+ */
+static int __devexit ubi32_uarttio_remove(struct platform_device *pdev)
+{
+ ubi32_uarttio_cleanup();
+
+ uart_unregister_driver(&ubi32_uarttio_uart_driver);
+
+ return 0;
+}
+
+static struct platform_driver ubi32_uarttio_platform_driver = {
+ .remove = __devexit_p(ubi32_uarttio_remove),
+ .suspend = ubi32_uarttio_suspend,
+ .resume = ubi32_uarttio_resume,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+#ifndef MODULE
+/*
+ * Called at boot time.
+ *
+ * uarttio=TIONAME,(baud,tx_pin,rx_pin,handshake[,cts_pin,rts_pin],...)
+ * TIONAME is the name of the devtree node which describes the UARTTIO
+ * pin is the index of the pin, i.e. PA4 is 5 [(port * 32) + pin]
+ * handshake = 1 to enable handshaking, provide cts_pin, rts_pin (UNSUPPORTED)
+ * handshake = 0 to disable handshaking, do not provide cts_pin, rts_pin
+ * Ex: uarttio=UARTTIO,57600,7,6,0,9600,8,9,0
+ */
+static int __init ubi32_uarttio_setup(char *str)
+{
+ strncpy(utio_ports_param, str, UBI32_UARTTIO_MAX_PARAM_LEN);
+ utio_ports_param[UBI32_UARTTIO_MAX_PARAM_LEN - 1] = 0;
+ return 1;
+}
+__setup("uarttio=", ubi32_uarttio_setup);
+#endif
+
+/*
+ * ubi32_uarttio_init
+ */
+static int __init ubi32_uarttio_init(void)
+{
+ int ret;
+ int i;
+
+ ret = ubi32_uarttio_probe();
+ if (ret) {
+ return ret;
+ }
+
+ /*
+ * Request the IRQ (do it here since many ports share the same IRQ)
+ */
+ ret = request_irq(uarttio_inst.irq, ubi32_uarttio_isr, IRQF_DISABLED, DRIVER_NAME, NULL);
+ if (ret != 0) {
+ printk(KERN_WARNING "Could not request IRQ %d\n", uarttio_inst.irq);
+ goto fail;
+ }
+ uarttio_inst.irq_requested = 1;
+
+ /*
+ * Register the UART driver and add the ports
+ */
+ ret = uart_register_driver(&ubi32_uarttio_uart_driver);
+ if (ret != 0) {
+ goto fail;
+ }
+ uarttio_inst.driver_registered = 1;
+
+ ret = ubi32_uarttio_add_ports();
+ if (ret != 0) {
+ ubi32_uarttio_cleanup();
+ return ret;
+ }
+
+ /*
+ * Start the thread
+ */
+ thread_enable(uarttio_inst.regs->thread);
+
+ for (i = 0; i < uarttio_nports; i++) {
+ pr_info("Serial: Ubicom32 uarttio #%d: tx:%d rx:%d baud:%d\n",
+ i, uarttio_ports[i].tx_pin, uarttio_ports[i].rx_pin,
+ uarttio_ports[i].uart->current_baud_rate);
+ }
+ pr_info("Serial: Ubicom32 uarttio started on thread:%d irq:%d\n", uarttio_inst.regs->thread, uarttio_inst.irq);
+
+ return ret;
+
+fail:
+ ubi32_uarttio_cleanup();
+ return ret;
+}
+module_init(ubi32_uarttio_init);
+
+/*
+ * ubi32_uarttio_exit
+ */
+static void __exit ubi32_uarttio_exit(void)
+{
+ platform_driver_unregister(&ubi32_uarttio_platform_driver);
+}
+module_exit(ubi32_uarttio_exit);
+
+module_param_string(ports, utio_ports_param, sizeof(utio_ports_param), 0444);
+MODULE_PARM_DESC(ports, "Sets the ports to allocate: ports=TIONAME,(baud,txpin,rxpin,handshake[,ctspin,rtspin],...)\n"
+ " TIONAME is the name of the devtree node which describes the UARTTIO\n"
+ " pin is the index of the pin, i.e. PA4 is 5 [(port * 32) + pin]\n"
+ " handshake = 1 to enable handshaking, provide ctspin, rtspin (UNSUPPORTED)\n"
+ " handshake = 0 to disable handshaking, do not provide ctspin, rtspin\n"
+ " Ex: ports=UARTTIO,57600,7,6,0,9600,8,9,0\n");
+MODULE_AUTHOR("Patrick Tjin <pat.tjin@ubicom.com>");
+MODULE_DESCRIPTION("Ubicom serial virtual peripherial driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CHARDEV_MAJOR(UBI32_UARTTIO_MAJOR);
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/target/linux/ubicom32/files/drivers/spi/spi_ubicom32_gpio.c b/target/linux/ubicom32/files/drivers/spi/spi_ubicom32_gpio.c
new file mode 100644
index 0000000..c41018a
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/spi/spi_ubicom32_gpio.c
@@ -0,0 +1,267 @@
+/*
+ * drivers/spi_spi_ubicom32_gpio.c
+ * Ubicom32 GPIO based SPI driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+
+#include <linux/spi/spi.h>
+#include <linux/spi/spi_bitbang.h>
+
+#include <linux/gpio.h>
+
+#include <asm/ubicom32-spi-gpio.h>
+
+#define DRIVER_NAME "ubicom32-spi-gpio"
+
+struct ubicom32_spi_gpio {
+ struct spi_bitbang bitbang;
+
+ struct ubicom32_spi_gpio_platform_data *pdata;
+
+ struct platform_device *dev;
+};
+
+/*
+ * The following 4 functions are used by EXPAND_BITBANG_TXRX to bitbang the data out.
+ */
+static inline void setsck(struct spi_device *dev, int on)
+{
+ struct ubicom32_spi_gpio *usg = (struct ubicom32_spi_gpio *)spi_master_get_devdata(dev->master);
+ gpio_set_value(usg->pdata->pin_clk, on ? 1 : 0);
+}
+
+static inline void setmosi(struct spi_device *dev, int on)
+{
+ struct ubicom32_spi_gpio *usg = (struct ubicom32_spi_gpio *)spi_master_get_devdata(dev->master);
+ gpio_set_value(usg->pdata->pin_mosi, on ? 1 : 0);
+}
+
+static inline u32 getmiso(struct spi_device *dev)
+{
+ struct ubicom32_spi_gpio *usg = (struct ubicom32_spi_gpio *)spi_master_get_devdata(dev->master);
+ return gpio_get_value(usg->pdata->pin_miso) ? 1 : 0;
+}
+
+#define spidelay(x) ndelay(x)
+
+#define EXPAND_BITBANG_TXRX
+#include <linux/spi/spi_bitbang.h>
+
+/*
+ * ubicom32_spi_gpio_txrx_mode0
+ */
+static u32 ubicom32_spi_gpio_txrx_mode0(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+}
+
+/*
+ * ubicom32_spi_gpio_txrx_mode1
+ */
+static u32 ubicom32_spi_gpio_txrx_mode1(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
+}
+
+/*
+ * ubicom32_spi_gpio_txrx_mode2
+ */
+static u32 ubicom32_spi_gpio_txrx_mode2(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
+}
+
+/*
+ * ubicom32_spi_gpio_txrx_mode3
+ */
+static u32 ubicom32_spi_gpio_txrx_mode3(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits)
+{
+ return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
+}
+
+/*
+ * ubicom32_spi_gpio_chipselect
+ */
+static void ubicom32_spi_gpio_chipselect(struct spi_device *dev, int value)
+{
+ struct ubicom32_spi_gpio_controller_data *cd = (struct ubicom32_spi_gpio_controller_data *)dev->controller_data;
+ unsigned int cs_polarity = dev->mode & SPI_CS_HIGH ? 1 : 0;
+
+ if (value == BITBANG_CS_ACTIVE) {
+ gpio_set_value(cd->pin_cs, cs_polarity);
+ return;
+ }
+ gpio_set_value(cd->pin_cs, !cs_polarity);
+}
+
+/*
+ * ubicom32_spi_gpio_probe
+ */
+static int ubicom32_spi_gpio_probe(struct platform_device *dev)
+{
+ struct ubicom32_spi_gpio_platform_data *pdata;
+ struct spi_master *master;
+ struct ubicom32_spi_gpio *usg;
+ int ret;
+
+ master = spi_alloc_master(&dev->dev, sizeof(struct ubicom32_spi_gpio));
+ if (master == NULL) {
+ dev_err(&dev->dev, "failed to allocate spi master\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ usg = (struct ubicom32_spi_gpio *)spi_master_get_devdata(master);
+
+ platform_set_drvdata(dev, usg);
+
+ /*
+ * Copy in the platform data
+ */
+ pdata = dev->dev.platform_data;
+ usg->pdata = dev->dev.platform_data;
+
+ /*
+ * Request the GPIO lines
+ */
+ ret = gpio_request(pdata->pin_mosi, "spi-mosi");
+ if (ret) {
+ dev_err(&dev->dev, "Failed to allocate spi-mosi GPIO\n");
+ goto err;
+ }
+
+ ret = gpio_request(pdata->pin_miso, "spi-miso");
+ if (ret) {
+ dev_err(&dev->dev, "Failed to allocate spi-miso GPIO\n");
+ goto err_nomiso;
+ }
+
+ ret = gpio_request(pdata->pin_clk, "spi-clk");
+ if (ret) {
+ dev_err(&dev->dev, "Failed to allocate spi-clk GPIO\n");
+ goto err_noclk;
+ }
+
+ /*
+ * Setup spi-bitbang adaptor
+ */
+ usg->bitbang.flags |= SPI_CS_HIGH;
+ usg->bitbang.master = spi_master_get(master);
+ usg->bitbang.master->bus_num = pdata->bus_num;
+ usg->bitbang.master->num_chipselect = pdata->num_chipselect;
+ usg->bitbang.chipselect = ubicom32_spi_gpio_chipselect;
+
+ usg->bitbang.txrx_word[SPI_MODE_0] = ubicom32_spi_gpio_txrx_mode0;
+ usg->bitbang.txrx_word[SPI_MODE_1] = ubicom32_spi_gpio_txrx_mode1;
+ usg->bitbang.txrx_word[SPI_MODE_2] = ubicom32_spi_gpio_txrx_mode2;
+ usg->bitbang.txrx_word[SPI_MODE_3] = ubicom32_spi_gpio_txrx_mode3;
+
+ /*
+ * Setup the GPIO pins
+ */
+ gpio_direction_output(pdata->pin_clk, pdata->clk_default);
+ gpio_direction_output(pdata->pin_mosi, 0);
+ gpio_direction_input(pdata->pin_miso);
+
+ /*
+ * Ready to go
+ */
+ ret = spi_bitbang_start(&usg->bitbang);
+ if (ret) {
+ goto err_no_bitbang;
+ }
+
+ return 0;
+
+err_no_bitbang:
+ spi_master_put(usg->bitbang.master);
+
+ gpio_free(pdata->pin_clk);
+
+err_noclk:
+ gpio_free(pdata->pin_miso);
+
+err_nomiso:
+ gpio_free(pdata->pin_mosi);
+
+err:
+ return ret;
+}
+
+/*
+ * ubicom32_spi_gpio_remove
+ */
+static int ubicom32_spi_gpio_remove(struct platform_device *dev)
+{
+ struct ubicom32_spi_gpio *sp = platform_get_drvdata(dev);
+
+ spi_bitbang_stop(&sp->bitbang);
+ spi_master_put(sp->bitbang.master);
+
+ return 0;
+}
+
+/*
+ * Work with hotplug and coldplug
+ */
+MODULE_ALIAS("platform:ubicom32_spi_gpio");
+
+static struct platform_driver ubicom32_spi_gpio_drv = {
+ .probe = ubicom32_spi_gpio_probe,
+ .remove = ubicom32_spi_gpio_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+/*
+ * ubicom32_spi_gpio_init
+ */
+static int __init ubicom32_spi_gpio_init(void)
+{
+ return platform_driver_register(&ubicom32_spi_gpio_drv);
+}
+
+/*
+ * ubicom32_spi_gpio_exit
+ */
+static void __exit ubicom32_spi_gpio_exit(void)
+{
+ platform_driver_unregister(&ubicom32_spi_gpio_drv);
+}
+
+module_init(ubicom32_spi_gpio_init);
+module_exit(ubicom32_spi_gpio_exit);
+
+MODULE_DESCRIPTION("Ubicom32 SPI-GPIO Driver");
+MODULE_AUTHOR("Pat Tjin, <@ubicom.com>");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c b/target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c
new file mode 100644
index 0000000..654ac4c
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/uio/uio_ubicom32ring.c
@@ -0,0 +1,288 @@
+/*
+ * drivers/uio/uio_ubicom32ring.c
+ *
+ * Userspace I/O platform driver for Ubicom32 ring buffers
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * Based on uio_ubicom32ring.c by Magnus Damm
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/uio_driver.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+#include <linux/interrupt.h>
+#include <linux/stringify.h>
+
+#include <asm/ip5000.h>
+#include <asm/ubicom32ring.h>
+
+#define DRIVER_NAME "uio_ubicom32ring"
+
+struct uio_ubicom32ring_data {
+ struct uio_info *uioinfo;
+
+ struct uio_ubicom32ring_regs *regs;
+
+ /*
+ * IRQ used to kick the ring buffer
+ */
+ int irq_tx;
+ int irq_rx;
+
+ spinlock_t lock;
+
+ unsigned long flags;
+
+ char name[0];
+};
+
+static irqreturn_t uio_ubicom32ring_handler(int irq, struct uio_info *dev_info)
+{
+ struct uio_ubicom32ring_data *priv = dev_info->priv;
+
+ /* Just disable the interrupt in the interrupt controller, and
+ * remember the state so we can allow user space to enable it later.
+ */
+
+ if (!test_and_set_bit(0, &priv->flags))
+ disable_irq_nosync(irq);
+
+ return IRQ_HANDLED;
+}
+
+static int uio_ubicom32ring_irqcontrol(struct uio_info *dev_info, s32 irq_on)
+{
+ struct uio_ubicom32ring_data *priv = dev_info->priv;
+ unsigned long flags;
+
+ /* Allow user space to enable and disable the interrupt
+ * in the interrupt controller, but keep track of the
+ * state to prevent per-irq depth damage.
+ *
+ * Serialize this operation to support multiple tasks.
+ */
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (irq_on & 2) {
+ /*
+ * Kick the ring buffer (if we can)
+ */
+ if (priv->irq_tx != 0xFF) {
+ ubicom32_set_interrupt(priv->irq_tx);
+ }
+ }
+
+ if (priv->irq_rx != 0xFF) {
+ if (irq_on & 1) {
+ if (test_and_clear_bit(0, &priv->flags))
+ enable_irq(dev_info->irq);
+ } else {
+ if (!test_and_set_bit(0, &priv->flags))
+ disable_irq(dev_info->irq);
+ }
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static int uio_ubicom32ring_probe(struct platform_device *pdev)
+{
+ struct uio_info *uioinfo;
+ struct uio_mem *uiomem;
+ struct uio_ubicom32ring_data *priv;
+ struct uio_ubicom32ring_regs *regs;
+ struct resource *mem_resource;
+ struct resource *irqtx_resource;
+ struct resource *irqrx_resource;
+ int ret = -EINVAL;
+ int i;
+
+ uioinfo = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
+ if (!uioinfo) {
+ dev_err(&pdev->dev, "unable to kmalloc\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Allocate private data with some string space after
+ */
+ i = sizeof(DRIVER_NAME) + 1;
+ i += pdev->dev.platform_data ? strlen(pdev->dev.platform_data) : 0;
+ priv = kzalloc(sizeof(struct uio_ubicom32ring_data) + i, GFP_KERNEL);
+ if (!priv) {
+ dev_err(&pdev->dev, "unable to kmalloc\n");
+ kfree(uioinfo);
+ return -ENOMEM;
+ }
+
+ strcpy(priv->name, DRIVER_NAME ":");
+ if (pdev->dev.platform_data) {
+ strcat(priv->name, pdev->dev.platform_data);
+ }
+ uioinfo->priv = priv;
+ uioinfo->name = priv->name;
+ uioinfo->version = "0.1";
+
+ priv->uioinfo = uioinfo;
+ spin_lock_init(&priv->lock);
+ priv->flags = 0; /* interrupt is enabled to begin with */
+
+ /*
+ * Get our resources, the IRQ_TX and IRQ_RX are optional.
+ */
+ priv->irq_tx = 0xFF;
+ irqtx_resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (irqtx_resource) {
+ priv->irq_tx = irqtx_resource->start;
+ }
+
+ uioinfo->irq = -1;
+ priv->irq_rx = 0xFF;
+ irqrx_resource = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+ if (irqrx_resource) {
+ priv->irq_rx = irqrx_resource->start;
+ uioinfo->irq = priv->irq_rx;
+ uioinfo->handler = uio_ubicom32ring_handler;
+ }
+
+ mem_resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_resource || !mem_resource->start) {
+ dev_err(&pdev->dev, "No valid memory resource found\n");
+ ret = -ENODEV;
+ goto fail;
+ }
+ regs = (struct uio_ubicom32ring_regs *)mem_resource->start;
+ priv->regs = regs;
+
+ if (regs->version != UIO_UBICOM32RING_REG_VERSION) {
+ dev_err(&pdev->dev, "version %d not supported\n", regs->version);
+ ret = -ENODEV;
+ goto fail;
+ }
+
+ /*
+ * First range is the shared register space, if we have any
+ */
+ uiomem = &uioinfo->mem[0];
+ if (regs->regs_size) {
+ uiomem->memtype = UIO_MEM_PHYS;
+ uiomem->addr = (u32_t)regs->regs;
+ uiomem->size = regs->regs_size;
+ ++uiomem;
+ dev_info(&pdev->dev, "regs:%p (%u) / rings: %d found\n", regs->regs, regs->regs_size, regs->num_rings);
+ } else {
+ dev_info(&pdev->dev, "rings: %d found\n", regs->num_rings);
+ }
+
+ /*
+ * The rest of the range correspond to the rings
+ */
+ for (i = 0; i < regs->num_rings; i++) {
+ dev_info(&pdev->dev, "\t%d: entries:%d ring:%p\n",
+ i, regs->rings[i]->entries, &(regs->rings[i]->ring));
+ if (uiomem >= &uioinfo->mem[MAX_UIO_MAPS]) {
+ dev_warn(&pdev->dev, "device has more than "
+ __stringify(MAX_UIO_MAPS)
+ " I/O memory resources.\n");
+ break;
+ }
+
+ uiomem->memtype = UIO_MEM_PHYS;
+ uiomem->addr = (u32_t)&(regs->rings[i]->head);
+ uiomem->size = (regs->rings[i]->entries * sizeof(u32_t)) +
+ sizeof(struct uio_ubicom32ring_desc);
+ ++uiomem;
+ }
+
+ while (uiomem < &uioinfo->mem[MAX_UIO_MAPS]) {
+ uiomem->size = 0;
+ ++uiomem;
+ }
+
+ /* This driver requires no hardware specific kernel code to handle
+ * interrupts. Instead, the interrupt handler simply disables the
+ * interrupt in the interrupt controller. User space is responsible
+ * for performing hardware specific acknowledge and re-enabling of
+ * the interrupt in the interrupt controller.
+ *
+ * Interrupt sharing is not supported.
+ */
+ uioinfo->irq_flags = IRQF_DISABLED;
+ uioinfo->irqcontrol = uio_ubicom32ring_irqcontrol;
+
+ ret = uio_register_device(&pdev->dev, priv->uioinfo);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to register uio device\n");
+ goto fail;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ dev_info(&pdev->dev, "'%s' using irq: rx %d tx %d, regs %p\n",
+ priv->name, priv->irq_rx, priv->irq_tx, priv->regs);
+
+ return 0;
+
+fail:
+ kfree(uioinfo);
+ kfree(priv);
+ return ret;
+}
+
+static int uio_ubicom32ring_remove(struct platform_device *pdev)
+{
+ struct uio_ubicom32ring_data *priv = platform_get_drvdata(pdev);
+
+ uio_unregister_device(priv->uioinfo);
+ kfree(priv->uioinfo);
+ kfree(priv);
+ return 0;
+}
+
+static struct platform_driver uio_ubicom32ring = {
+ .probe = uio_ubicom32ring_probe,
+ .remove = uio_ubicom32ring_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init uio_ubicom32ring_init(void)
+{
+ return platform_driver_register(&uio_ubicom32ring);
+}
+
+static void __exit uio_ubicom32ring_exit(void)
+{
+ platform_driver_unregister(&uio_ubicom32ring);
+}
+
+module_init(uio_ubicom32ring_init);
+module_exit(uio_ubicom32ring_exit);
+
+MODULE_AUTHOR("Patrick Tjin");
+MODULE_DESCRIPTION("Userspace I/O driver for Ubicom32 ring buffers");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff --git a/target/linux/ubicom32/files/drivers/usb/musb/ubi32_usb.c b/target/linux/ubicom32/files/drivers/usb/musb/ubi32_usb.c
new file mode 100644
index 0000000..d89e004
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/usb/musb/ubi32_usb.c
@@ -0,0 +1,156 @@
+/*
+ * drivers/usb/musb/ubi32_usb.c
+ * Ubicom32 usb controller driver.
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ * Copyright (C) 2005-2006 by Texas Instruments
+ *
+ * Derived from the Texas Instruments Inventra Controller Driver for Linux.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <asm/io.h>
+#include <asm/ip5000.h>
+#include "musb_core.h"
+
+void musb_platform_enable(struct musb *musb)
+{
+}
+void musb_platform_disable(struct musb *musb)
+{
+}
+
+int musb_platform_set_mode(struct musb *musb, u8 musb_mode) {
+ return 0;
+}
+
+static void ip5k_usb_hcd_vbus_power(struct musb *musb, int is_on, int sleeping)
+{
+}
+
+static void ip5k_usb_hcd_set_vbus(struct musb *musb, int is_on)
+{
+ u8 devctl;
+ /* HDRC controls CPEN, but beware current surges during device
+ * connect. They can trigger transient overcurrent conditions
+ * that must be ignored.
+ */
+
+ devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+
+ if (is_on) {
+ musb->is_active = 1;
+ musb->xceiv.default_a = 1;
+ musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
+ devctl |= MUSB_DEVCTL_SESSION;
+
+ MUSB_HST_MODE(musb);
+ } else {
+ musb->is_active = 0;
+
+ /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
+ * jumping right to B_IDLE...
+ */
+
+ musb->xceiv.default_a = 0;
+ musb->xceiv.state = OTG_STATE_B_IDLE;
+ devctl &= ~MUSB_DEVCTL_SESSION;
+
+ MUSB_DEV_MODE(musb);
+ }
+ musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
+
+ DBG(1, "VBUS %s, devctl %02x "
+ /* otg %3x conf %08x prcm %08x */ "\n",
+ otg_state_string(musb),
+ musb_readb(musb->mregs, MUSB_DEVCTL));
+}
+static int ip5k_usb_hcd_set_power(struct otg_transceiver *x, unsigned mA)
+{
+ return 0;
+}
+
+static int musb_platform_resume(struct musb *musb);
+
+int __init musb_platform_init(struct musb *musb)
+{
+
+#ifdef CONFIG_UBICOM32_V4
+ u32_t chip_id;
+ asm volatile (
+ "move.4 %0, CHIP_ID \n\t"
+ : "=r" (chip_id)
+ );
+ if (chip_id == 0x30001) {
+ *((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 30);
+ udelay(1);
+ *((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 31);
+ } else {
+ *((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 17);
+ udelay(1);
+ *((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 14);
+ }
+#endif
+
+ *((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_CFG)) |= ((1 << 14) | (1 <<15));
+
+ /* The i-clk is AUTO gated. Hence there is no need
+ * to disable it until the driver is shutdown */
+
+ clk_enable(musb->clock);
+ musb_platform_resume(musb);
+
+ ip5k_usb_hcd_vbus_power(musb, musb->board_mode == MUSB_HOST, 1);
+
+ if (is_host_enabled(musb))
+ musb->board_set_vbus = ip5k_usb_hcd_set_vbus;
+ if (is_peripheral_enabled(musb))
+ musb->xceiv.set_power = ip5k_usb_hcd_set_power;
+
+ return 0;
+}
+
+
+int musb_platform_suspend(struct musb *musb)
+{
+ return 0;
+}
+int musb_platform_resume(struct musb *musb)
+{
+ return 0;
+}
+
+int musb_platform_exit(struct musb *musb)
+{
+ ip5k_usb_hcd_vbus_power(musb, 0 /*off*/, 1);
+ musb_platform_suspend(musb);
+ return 0;
+}
diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c
new file mode 100644
index 0000000..99538c3
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32bl.c
@@ -0,0 +1,399 @@
+/*
+ * drivers/video/backlight/ubicom32bl.c
+ * Backlight driver for the Ubicom32 platform
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/backlight.h>
+#include <linux/fb.h>
+
+#include <asm/ubicom32bl.h>
+#include <asm/ip5000.h>
+
+#define DRIVER_NAME "ubicom32bl"
+#define UBICOM32BL_MAX_BRIGHTNESS 255
+
+struct ubicom32bl_data {
+ /*
+ * Pointer to the platform data structure. Keep this around since we need values
+ * from it to set the backlight intensity.
+ */
+ const struct ubicom32bl_platform_data *pdata;
+
+ /*
+ * Backlight device, we have to save this for use when we remove ourselves.
+ */
+ struct backlight_device *bldev;
+
+ /*
+ * Current intensity, used for get_intensity.
+ */
+ int cur_intensity;
+
+ /*
+ * Init function for PWM
+ */
+ int (*init_fn)(struct ubicom32bl_data *);
+
+ /*
+ * Set intensity function depending on the backlight type
+ */
+ int (*set_intensity_fn)(struct ubicom32bl_data *, int);
+};
+
+/*
+ * ubicom32bl_set_intensity_gpio
+ */
+static int ubicom32bl_set_intensity_gpio(struct ubicom32bl_data *ud, int intensity)
+{
+ ud->cur_intensity = intensity ? 255 : 0;
+
+ if (intensity) {
+ // set gpio
+ return 0;
+ }
+
+ // clear gpio
+ return 0;
+}
+
+/*
+ * ubicom32bl_set_intensity_hw
+ */
+static int ubicom32bl_set_intensity_hw(struct ubicom32bl_data *ud, int intensity)
+{
+ u16_t period = ud->pdata->pwm_period;
+ u16_t duty;
+
+ /*
+ * Calculate the new duty cycle
+ */
+ duty = (period * intensity) / (UBICOM32BL_MAX_BRIGHTNESS + 1);
+
+ /*
+ * Set the new duty cycle
+ */
+ switch (ud->pdata->pwm_channel) {
+ case 0:
+ /*
+ * Channel 0 is in the lower half of PORT C ctl0 and ctl1
+ */
+ UBICOM32_IO_PORT(RC)->ctl1 = (ud->pdata->pwm_period << 16) | duty;
+ break;
+
+ case 1:
+ /*
+ * Channel 1 is in the upper half of PORT C ctl0 and ctl2
+ */
+ UBICOM32_IO_PORT(RC)->ctl2 = (ud->pdata->pwm_period << 16) | duty;
+ break;
+
+ case 2:
+ /*
+ * Channel 2 is in PORT H ctl0 and ctl1
+ */
+ UBICOM32_IO_PORT(RH)->ctl1 = (ud->pdata->pwm_period << 16) | duty;
+ break;
+ }
+
+ ud->cur_intensity = intensity;
+
+ return 0;
+}
+
+/*
+ * ubicom32bl_set_intensity
+ */
+static int ubicom32bl_set_intensity(struct backlight_device *bd)
+{
+ struct ubicom32bl_data *ud = (struct ubicom32bl_data *)bl_get_data(bd);
+ int intensity = bd->props.brightness;
+
+ /*
+ * If we're blanked the the intensity doesn't matter.
+ */
+ if ((bd->props.power != FB_BLANK_UNBLANK) || (bd->props.fb_blank != FB_BLANK_UNBLANK)) {
+ intensity = 0;
+ }
+
+ /*
+ * Check for inverted backlight.
+ */
+ if (ud->pdata->invert) {
+ intensity = UBICOM32BL_MAX_BRIGHTNESS - intensity;
+ }
+
+ if (ud->set_intensity_fn) {
+ return ud->set_intensity_fn(ud, intensity);
+ }
+
+ return -ENXIO;
+}
+
+/*
+ * ubicom32bl_get_intensity
+ * Return the current intensity of the backlight.
+ */
+static int ubicom32bl_get_intensity(struct backlight_device *bd)
+{
+ struct ubicom32bl_data *ud = (struct ubicom32bl_data *)bl_get_data(bd);
+
+ return ud->cur_intensity;
+}
+
+/*
+ * ubicom32bl_init_hw_pwm
+ * Set the appropriate PWM registers
+ */
+static int ubicom32bl_init_hw_pwm(struct ubicom32bl_data *ud)
+{
+ /*
+ * bit 13: enable
+ */
+ u16_t pwm_cfg = (1 << 13) | (ud->pdata->pwm_prescale << 8) ;
+
+ switch (ud->pdata->pwm_channel) {
+ case 0:
+ /*
+ * Channel 0 is in the lower half of PORT C ctl0 and ctl1 (PA5)
+ */
+ UBICOM32_IO_PORT(RC)->ctl0 &= ~0xFFFF;
+ UBICOM32_IO_PORT(RC)->ctl0 |= pwm_cfg;
+ UBICOM32_IO_PORT(RC)->ctl1 = ud->pdata->pwm_period << 16;
+
+ /*
+ * If the port function is not set, set it to GPIO/PWM
+ */
+ if (!UBICOM32_IO_PORT(RA)->function) {
+ UBICOM32_IO_PORT(RA)->function = 3;
+ }
+ break;
+
+ case 1:
+ /*
+ * Channel 1 is in the upper half of PORT C ctl0 and ctl2 (PE4)
+ */
+ UBICOM32_IO_PORT(RC)->ctl0 &= ~0xFFFF0000;
+ UBICOM32_IO_PORT(RC)->ctl0 |= (pwm_cfg << 16);
+ UBICOM32_IO_PORT(RC)->ctl2 = ud->pdata->pwm_period << 16;
+
+ /*
+ * If the port function is not set, set it to GPIO/ExtIOInt
+ */
+ if (!UBICOM32_IO_PORT(RE)->function) {
+ UBICOM32_IO_PORT(RE)->function = 3;
+ }
+ break;
+
+ case 2:
+ /*
+ * Channel 2 is in PORT H ctl0 and ctl1 (PD0)
+ */
+ UBICOM32_IO_PORT(RH)->ctl0 &= ~0xFFFF0000;
+ UBICOM32_IO_PORT(RH)->ctl0 = pwm_cfg;
+ UBICOM32_IO_PORT(RH)->ctl1 = ud->pdata->pwm_period << 16;
+
+ /*
+ * If the port function is not set, set it to GPIO
+ */
+ if (!UBICOM32_IO_PORT(RD)->function) {
+ UBICOM32_IO_PORT(RD)->function = 3;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+/*
+ * ubicom32bl_init_gpio
+ * Allocate the appropriate GPIO
+ */
+static int ubicom32bl_init_gpio(struct ubicom32bl_data *ud)
+{
+ return 0;
+}
+
+static struct backlight_ops ubicom32bl_ops = {
+ .get_brightness = ubicom32bl_get_intensity,
+ .update_status = ubicom32bl_set_intensity,
+};
+
+/*
+ * ubicom32bl_probe
+ */
+static int ubicom32bl_probe(struct platform_device *pdev)
+{
+ const struct ubicom32bl_platform_data *pdata = pdev->dev.platform_data;
+ struct ubicom32bl_data *ud;
+ struct backlight_device *bldev;
+ int retval;
+
+ /*
+ * Check to see if we have any platform data, if we don't then the backlight is not
+ * configured on this device.
+ */
+ if (!pdata) {
+ return -ENODEV;
+ }
+
+ /*
+ * Allocate our private data
+ */
+ ud = kzalloc(sizeof(struct ubicom32bl_data), GFP_KERNEL);
+ if (!ud) {
+ return -ENOMEM;
+ }
+
+ ud->pdata = pdata;
+
+ /*
+ * Check to see that the platform data is valid for this driver
+ */
+ switch (pdata->type) {
+ case UBICOM32BL_TYPE_PWM:
+ {
+ /*
+ * Make sure we have a PWM peripheral
+ */
+ u32_t chipid;
+ asm volatile (
+ "move.4 %0, CHIP_ID \n\t"
+ : "=r" (chipid)
+ );
+ if (chipid != 0x00030001) {
+ retval = -ENODEV;
+ goto fail;
+ }
+
+ if (pdata->pwm_channel > 3) {
+ retval = -ENODEV;
+ goto fail;
+ }
+ if (pdata->pwm_prescale > 16) {
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ ud->init_fn = ubicom32bl_init_hw_pwm;
+ ud->set_intensity_fn = ubicom32bl_set_intensity_hw;
+ break;
+ }
+
+ case UBICOM32BL_TYPE_PWM_HRT:
+ // For now, PWM HRT devices are treated as binary lights.
+
+ case UBICOM32BL_TYPE_BINARY:
+ ud->init_fn = ubicom32bl_init_gpio;
+ ud->set_intensity_fn = ubicom32bl_set_intensity_gpio;
+ break;
+ }
+
+ /*
+ * Register our backlight device
+ */
+ bldev = backlight_device_register(DRIVER_NAME, &pdev->dev, ud, &ubicom32bl_ops);
+ if (IS_ERR(bldev)) {
+ retval = PTR_ERR(bldev);
+ goto fail;
+ }
+
+ ud->bldev = bldev;
+ ud->cur_intensity = pdata->default_intensity;
+ platform_set_drvdata(pdev, ud);
+
+ /*
+ * Start up the backlight at the prescribed default intensity
+ */
+ bldev->props.power = FB_BLANK_UNBLANK;
+ bldev->props.max_brightness = UBICOM32BL_MAX_BRIGHTNESS;
+ bldev->props.brightness = pdata->default_intensity;
+
+ if (ud->init_fn) {
+ if (ud->init_fn(ud) != 0) {
+ retval = -ENODEV;
+ backlight_device_unregister(ud->bldev);
+ goto fail;
+ }
+ }
+ ubicom32bl_set_intensity(bldev);
+
+ printk(KERN_INFO DRIVER_NAME ": Backlight driver started\n");
+
+ return 0;
+
+fail:
+ platform_set_drvdata(pdev, NULL);
+ kfree(ud);
+ return retval;
+}
+
+/*
+ * ubicom32bl_remove
+ */
+static int __exit ubicom32bl_remove(struct platform_device *pdev)
+{
+ struct ubicom32bl_data *ud = platform_get_drvdata(pdev);
+
+ backlight_device_unregister(ud->bldev);
+ platform_set_drvdata(pdev, NULL);
+ kfree(ud);
+
+ return 0;
+}
+
+static struct platform_driver ubicom32bl_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+
+ .remove = __exit_p(ubicom32bl_remove),
+};
+
+/*
+ * ubicom32bl_init
+ */
+static int __init ubicom32bl_init(void)
+{
+ return platform_driver_probe(&ubicom32bl_driver, ubicom32bl_probe);
+}
+module_init(ubicom32bl_init);
+
+/*
+ * ubicom32bl_exit
+ */
+static void __exit ubicom32bl_exit(void)
+{
+ platform_driver_unregister(&ubicom32bl_driver);
+}
+module_exit(ubicom32bl_exit);
+
+MODULE_AUTHOR("Patrick Tjin <@ubicom.com>");
+MODULE_DESCRIPTION("Ubicom32 backlight driver");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c
new file mode 100644
index 0000000..e4f8c71
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.c
@@ -0,0 +1,372 @@
+/*
+ * drivers/video/ubicom32lcd.c
+ * LCD initilization code
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+#include <asm/ip5000.h>
+#include <asm/gpio.h>
+#include <asm/ubicom32lcd.h>
+
+#include "ubicom32lcd.h"
+
+#define DRIVER_NAME "ubicom32lcd"
+
+struct ubicom32lcd_data {
+ const struct ubicom32lcd_panel *panel;
+
+ int pin_cs;
+ int pin_rd;
+ int pin_rs;
+ int pin_wr;
+ int pin_reset;
+ struct ubicom32_io_port *port_data;
+ int data_shift;
+};
+
+/*
+ * ubicom32lcd_write
+ * Performs a write cycle on the bus (assumes CS asserted, RD & WR set)
+ */
+static void ubicom32lcd_write(struct ubicom32lcd_data *ud, int command, u16 data)
+{
+ if (command) {
+ UBICOM32_GPIO_SET_PIN_LOW(ud->pin_rs);
+ } else {
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs);
+ }
+
+ asm volatile (
+ "or.4 4(%[port]), 4(%[port]), %[mask] \n\t"
+ "not.4 %[mask], %[mask] \n\t"
+ "and.4 8(%[port]), 8(%[port]), %[mask] \n\t"
+ "or.4 8(%[port]), 8(%[port]), %[cmd] \n\t"
+ :
+ : [port] "a" (ud->port_data),
+ [mask] "d" (0xFFFF << ud->data_shift),
+ [cmd] "d" (data << ud->data_shift)
+ : "cc"
+ );
+
+ UBICOM32_GPIO_SET_PIN_LOW(ud->pin_wr);
+
+ //ndelay(50);
+ udelay(1);
+
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_wr);
+
+ udelay(1);
+ //ndelay(50);
+}
+
+/*
+ * ubicom32lcd_read_data
+ * Performs a read cycle on the bus (assumes CS asserted, RD & WR set)
+ */
+static u16 ubicom32lcd_read_data(struct ubicom32lcd_data *ud)
+{
+ u32_t data;
+
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs);
+
+ asm volatile (
+ "and.4 4(%[port]), 4(%[port]), %[mask]\n\t"
+ :
+ : [port] "a" (ud->port_data),
+ [mask] "d" (~(0xFFFF << ud->data_shift))
+ : "cc"
+ );
+
+ UBICOM32_GPIO_SET_PIN_LOW(ud->pin_rd);
+
+ ndelay(300);
+
+ asm volatile (
+ "lsr.4 %[data], 12(%[port]), %[shamt] \n\t"
+ "and.4 %[data], %[data], %[mask] \n\t"
+ : [data] "=d" (data)
+ : [port] "a" (ud->port_data),
+ [mask] "d" (0xFFFF),
+ [shamt] "d" (ud->data_shift)
+ : "cc"
+ );
+
+ ndelay(200);
+
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rd);
+
+ ndelay(500);
+
+ return data;
+}
+
+/*
+ * ubicom32lcd_execute
+ * Executes a script for performing operations on the LCD (assumes CS set)
+ */
+static void ubicom32lcd_execute(struct ubicom32lcd_data *ud, const struct ubicom32lcd_step *script)
+{
+ while (1) {
+ switch (script->op) {
+ case LCD_STEP_CMD:
+ ubicom32lcd_write(ud, 1, script->cmd);
+ break;
+
+ case LCD_STEP_DATA:
+ ubicom32lcd_write(ud, 0, script->data);
+ break;
+
+ case LCD_STEP_CMD_DATA:
+ ubicom32lcd_write(ud, 1, script->cmd);
+ ubicom32lcd_write(ud, 0, script->data);
+ break;
+
+ case LCD_STEP_SLEEP:
+ udelay(script->data);
+ break;
+
+ case LCD_STEP_DONE:
+ return;
+ }
+ script++;
+ }
+}
+
+/*
+ * ubicom32lcd_goto
+ * Places the gram pointer at a specific X, Y address
+ */
+static void ubicom32lcd_goto(struct ubicom32lcd_data *ud, int x, int y)
+{
+ ubicom32lcd_write(ud, 1, ud->panel->horz_reg);
+ ubicom32lcd_write(ud, 0, x);
+ ubicom32lcd_write(ud, 1, ud->panel->vert_reg);
+ ubicom32lcd_write(ud, 0, y);
+ ubicom32lcd_write(ud, 1, ud->panel->gram_reg);
+}
+
+/*
+ * ubicom32lcd_panel_init
+ * Initializes the lcd panel.
+ */
+static int ubicom32lcd_panel_init(struct ubicom32lcd_data *ud)
+{
+ u16 id;
+
+ UBICOM32_GPIO_SET_PIN_LOW(ud->pin_reset);
+ UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_reset);
+ UBICOM32_GPIO_ENABLE(ud->pin_reset);
+
+ asm volatile (
+ "or.4 0x50(%[port]), 0x50(%[port]), %[mask] \n\t"
+ "not.4 %[mask], %[mask] \n\t"
+ "and.4 0x04(%[port]), 0x04(%[port]), %[mask] \n\t"
+ :
+ : [port] "a" (ud->port_data),
+ [mask] "d" (0xFFFF << ud->data_shift)
+ : "cc"
+ );
+
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs);
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rd);
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_wr);
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_cs);
+
+ UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_rs);
+ UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_rd);
+ UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_wr);
+ UBICOM32_GPIO_SET_PIN_OUTPUT(ud->pin_cs);
+
+ UBICOM32_GPIO_ENABLE(ud->pin_rs);
+ UBICOM32_GPIO_ENABLE(ud->pin_rd);
+ UBICOM32_GPIO_ENABLE(ud->pin_wr);
+ UBICOM32_GPIO_ENABLE(ud->pin_cs);
+
+ udelay(20);
+
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_reset);
+
+ udelay(20);
+
+ UBICOM32_GPIO_SET_PIN_LOW(ud->pin_cs);
+
+ id = ubicom32lcd_read_data(ud);
+
+ /*
+ * We will try to figure out what kind of panel we have if we were not told.
+ */
+ if (!ud->panel) {
+ const struct ubicom32lcd_panel **p = ubicom32lcd_panels;
+ while (*p) {
+ if ((*p)->id && ((*p)->id == id)) {
+ break;
+ }
+ p++;
+ }
+ if (!*p) {
+ printk(KERN_WARNING DRIVER_NAME ":Could not find compatible panel, id=%x\n", id);
+ return -ENODEV;
+ }
+ ud->panel = *p;
+ }
+
+ /*
+ * Make sure panel ID matches if we were supplied a panel type
+ */
+ if (ud->panel->id && (ud->panel->id != id)) {
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_cs);
+
+ return -ENODEV;
+ }
+
+ ubicom32lcd_execute(ud, ud->panel->init_seq);
+
+ ubicom32lcd_goto(ud, 0, 0);
+
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_cs);
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rd);
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_wr);
+ UBICOM32_GPIO_SET_PIN_HIGH(ud->pin_rs);
+
+ printk(KERN_INFO DRIVER_NAME ": Initialized panel %s\n", ud->panel->desc);
+
+ return 0;
+}
+
+/*
+ * ubicom32lcd_probe
+ */
+static int ubicom32lcd_probe(struct platform_device *pdev)
+{
+ const struct ubicom32lcd_platform_data *pdata = pdev->dev.platform_data;
+ struct ubicom32lcd_data *ud;
+ int retval;
+
+ /*
+ * Allocate our private data
+ */
+ ud = kzalloc(sizeof(struct ubicom32lcd_data), GFP_KERNEL);
+ if (!ud) {
+ return -ENOMEM;
+ }
+
+ if (pdata) {
+ ud->pin_cs = pdata->pin_cs;
+ ud->pin_rd = pdata->pin_rd;
+ ud->pin_wr = pdata->pin_wr;
+ ud->pin_rs = pdata->pin_rs;
+ ud->pin_reset = pdata->pin_reset;
+ ud->port_data = pdata->port_data;
+ ud->data_shift = pdata->data_shift;
+ } else {
+ /*
+ * Defaults
+ */
+ ud->pin_cs = GPIO_RD_4;
+ ud->pin_rd = GPIO_RD_5;
+ ud->pin_rs = GPIO_RD_3;
+ ud->pin_wr = GPIO_RD_2;
+ ud->pin_reset = GPIO_RD_7;
+ ud->port_data = (struct ubicom32_io_port *)RI;
+ ud->data_shift = 0;
+ }
+
+ /*
+ * Initialize the display
+ */
+ retval = ubicom32lcd_panel_init(ud);
+ if (retval) {
+ kfree(ud);
+ return retval;
+ }
+
+ printk(KERN_INFO DRIVER_NAME ": LCD initialized\n");
+
+ return 0;
+}
+
+/*
+ * ubicom32lcd_remove
+ */
+static int __exit ubicom32lcd_remove(struct platform_device *pdev)
+{
+ struct ubicom32lcd_data *ud = platform_get_drvdata(pdev);
+
+ kfree(ud);
+
+ return 0;
+}
+
+static struct platform_driver ubicom32lcd_driver = {
+ .probe = ubicom32lcd_probe,
+ .remove = ubicom32lcd_remove,
+
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+
+ .remove = __exit_p(ubicom32lcd_remove),
+};
+
+static struct platform_device *ubicom32lcd_device;
+
+/*
+ * ubicom32lcd_init
+ */
+static int __init ubicom32lcd_init(void)
+{
+ int res;
+
+ res = platform_driver_register(&ubicom32lcd_driver);
+ if (res == 0) {
+ ubicom32lcd_device = platform_device_alloc(DRIVER_NAME, 0);
+ if (ubicom32lcd_device) {
+ res = platform_device_add(ubicom32lcd_device);
+ } else {
+ res = -ENOMEM;
+ }
+ if (res) {
+ platform_device_put(ubicom32lcd_device);
+ platform_driver_unregister(&ubicom32lcd_driver);
+ }
+ }
+ return res;
+}
+module_init(ubicom32lcd_init);
+
+/*
+ * ubicom32lcd_exit
+ */
+static void __exit ubicom32lcd_exit(void)
+{
+ platform_device_unregister(ubicom32lcd_device);
+ platform_driver_unregister(&ubicom32lcd_driver);
+}
+module_exit(ubicom32lcd_exit);
+
+MODULE_AUTHOR("Patrick Tjin <@ubicom.com>");
+MODULE_DESCRIPTION("Ubicom32 LCD driver");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h
new file mode 100644
index 0000000..07650ba
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcd.h
@@ -0,0 +1,546 @@
+/*
+ * ubicom32lcd.h
+ * Ubicom32 lcd panel drivers
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * This Ubicom32 library is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This Ubicom32 library is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _UBICOM32LCD_H_
+#define _UBICOM32LCD_H_
+
+enum ubicom32lcd_op {
+ /*
+ * Sleep for (data) ms
+ */
+ LCD_STEP_SLEEP,
+
+ /*
+ * Execute write of command
+ */
+ LCD_STEP_CMD,
+
+ /*
+ * Execute write of data
+ */
+ LCD_STEP_DATA,
+
+ /*
+ * Execute write of command/data
+ */
+ LCD_STEP_CMD_DATA,
+
+ /*
+ * Script done
+ */
+ LCD_STEP_DONE,
+};
+
+struct ubicom32lcd_step {
+ enum ubicom32lcd_op op;
+ u16 cmd;
+ u16 data;
+};
+
+struct ubicom32lcd_panel {
+ const struct ubicom32lcd_step *init_seq;
+ const char *desc;
+
+ u32 xres;
+ u32 yres;
+ u32 stride;
+ u32 flags;
+
+ u16 id;
+ u16 horz_reg;
+ u16 vert_reg;
+ u16 gram_reg;
+};
+
+#ifdef CONFIG_LCD_UBICOM32_CFAF240320KTTS
+static const struct ubicom32lcd_step cfaf240320ktts_init_0[] = {
+ {LCD_STEP_CMD_DATA, 0x0001, 0x0000,}, // Driver Output Control Register (R01h) Page 14, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0002, 0x0700,}, // LCD Driving Waveform Control (R02h) Page 15, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0003, 0x50A0,}, // Entry Mode (R03h) 0 degrees
+ {LCD_STEP_CMD_DATA, 0x0004, 0x0000,}, // Scaling Control register (R04h) Page 16, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0008, 0x0207,}, // Display Control 2 (R08h) Page 17, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0009, 0x0000,}, // Display Control 3 (R09h) Page 18, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000A, 0x0000,}, // Frame Cycle Control (R0Ah) Page 19, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000C, 0x0000,}, // External Display Interface Control 1 (R0Ch) Page 20, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000D, 0x0000,}, // Frame Maker Position (R0Dh) Page 21, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000F, 0x0000,}, // External Display Interface Control 2 (R0Fh) Page 21, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0010, 0x0000,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0012, 0x0000,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0013, 0x0000,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet
+ {LCD_STEP_SLEEP, 0, 200},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0101,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0010, 0x12B0,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0012, 0x01BB,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0013, 0x1300,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0029, 0x0010,}, // NVM read data 2 (R29h) Page 30, SPFD5408B Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0030, 0x000A,}, // Gamma Control 1 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0031, 0x1326,}, // Gamma Control 2 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0032, 0x0A29,}, // Gamma Control 3 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0033, 0x290A,}, // Gamma Control 4 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0034, 0x2613,}, // Gamma Control 5 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0035, 0x0A0A,}, // Gamma Control 6 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0036, 0x1E03,}, // Gamma Control 7 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0037, 0x031E,}, // Gamma Control 8 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0038, 0x0706,}, // Gamma Control 9 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0039, 0x0303,}, // Gamma Control 10 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003A, 0x0E04,}, // Gamma Control 11 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003B, 0x0E01,}, // Gamma Control 12 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003C, 0x010E,}, // Gamma Control 13 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003D, 0x040E,}, // Gamma Control 14 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003E, 0x0303,}, // Gamma Control 15 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003F, 0x0607,}, // Gamma Control 16 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0050, 0x0000,}, // Window Horizontal RAM Address Start (R50h) Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0051, 0x00EF,}, // Window Horizontal RAM Address End (R51h) Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0052, 0x0000,}, // Window Vertical RAM Address Start (R52h) Page 33, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0053, 0x013F,}, // Window Vertical RAM Address End (R53h) Page 33, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0060, 0x2700,}, // Driver Output Control (R60h) Page 33, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0061, 0x0001,}, // Driver Output Control (R61h) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x006A, 0x0000,}, // Vertical Scroll Control (R6Ah) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0080, 0x0000,}, // Display Position - Partial Display 1 (R80h) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0081, 0x0000,}, // RAM Address Start - Partial Display 1 (R81h) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0082, 0x0000,}, // RAM Address End - Partial Display 1 (R82h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0083, 0x0000,}, // Display Position - Partial Display 2 (R83h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0084, 0x0000,}, // RAM Address Start - Partial Display 2 (R84h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0085, 0x0000,}, // RAM Address End - Partial Display 2 (R85h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0090, 0x0010,}, // Panel Interface Control 1 (R90h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0092, 0x0000,}, // Panel Interface Control 2 (R92h) Page 37, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0093, 0x0103,}, // Panel Interface control 3 (R93h) Page 38, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0095, 0x0210,}, // Panel Interface control 4 (R95h) Page 38, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0097, 0x0000,}, // Panel Interface Control 5 (R97h) Page 40, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0098, 0x0000,}, // Panel Interface Control 6 (R98h) Page 41, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0173,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet
+ {LCD_STEP_DONE, 0, 0},
+};
+
+const struct ubicom32lcd_panel cfaf240320ktts_0 = {
+ .desc = "CFAF240320KTTS",
+ .init_seq = cfaf240320ktts_init_0,
+ .horz_reg = 0x20,
+ .vert_reg = 0x21,
+ .gram_reg = 0x22,
+ .xres = 240,
+ .yres = 320,
+ .stride = 240,
+ .id = 0x5408,
+};
+#endif
+
+#ifdef CONFIG_LCD_UBICOM32_CFAF240320KTTS_180
+static const struct ubicom32lcd_step cfaf240320ktts_init_180[] = {
+ {LCD_STEP_CMD_DATA, 0x0001, 0x0000,}, // Driver Output Control Register (R01h) Page 14, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0002, 0x0700,}, // LCD Driving Waveform Control (R02h) Page 15, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0003, 0x5000,}, // Entry Mode (R03h) 180 degrees
+ {LCD_STEP_CMD_DATA, 0x0004, 0x0000,}, // Scaling Control register (R04h) Page 16, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0008, 0x0207,}, // Display Control 2 (R08h) Page 17, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0009, 0x0000,}, // Display Control 3 (R09h) Page 18, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000A, 0x0000,}, // Frame Cycle Control (R0Ah) Page 19, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000C, 0x0000,}, // External Display Interface Control 1 (R0Ch) Page 20, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000D, 0x0000,}, // Frame Maker Position (R0Dh) Page 21, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x000F, 0x0000,}, // External Display Interface Control 2 (R0Fh) Page 21, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0010, 0x0000,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0012, 0x0000,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0013, 0x0000,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet
+ {LCD_STEP_SLEEP, 0, 200},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0101,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0010, 0x12B0,}, // Power Control 1 (R10h) Page 22, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0011, 0x0007,}, // Power Control 2 (R11h) Page 23, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0012, 0x01BB,}, // Power Control 3 (R12h) Page 24, SPFD5408B Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0013, 0x1300,}, // Power Control 4 (R13h) Page 25, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0029, 0x0010,}, // NVM read data 2 (R29h) Page 30, SPFD5408B Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0030, 0x000A,}, // Gamma Control 1 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0031, 0x1326,}, // Gamma Control 2 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0032, 0x0A29,}, // Gamma Control 3 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0033, 0x290A,}, // Gamma Control 4 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0034, 0x2613,}, // Gamma Control 5 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0035, 0x0A0A,}, // Gamma Control 6 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0036, 0x1E03,}, // Gamma Control 7 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0037, 0x031E,}, // Gamma Control 8 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0038, 0x0706,}, // Gamma Control 9 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0039, 0x0303,}, // Gamma Control 10 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003A, 0x0E04,}, // Gamma Control 11 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003B, 0x0E01,}, // Gamma Control 12 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003C, 0x010E,}, // Gamma Control 13 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003D, 0x040E,}, // Gamma Control 14 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003E, 0x0303,}, // Gamma Control 15 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x003F, 0x0607,}, // Gamma Control 16 Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0050, 0x0000,}, // Window Horizontal RAM Address Start (R50h) Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0051, 0x00EF,}, // Window Horizontal RAM Address End (R51h) Page 32, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0052, 0x0000,}, // Window Vertical RAM Address Start (R52h) Page 33, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0053, 0x013F,}, // Window Vertical RAM Address End (R53h) Page 33, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0060, 0x2700,}, // Driver Output Control (R60h) Page 33, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0061, 0x0001,}, // Driver Output Control (R61h) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x006A, 0x0000,}, // Vertical Scroll Control (R6Ah) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0080, 0x0000,}, // Display Position - Partial Display 1 (R80h) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0081, 0x0000,}, // RAM Address Start - Partial Display 1 (R81h) Page 35, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0082, 0x0000,}, // RAM Address End - Partial Display 1 (R82h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0083, 0x0000,}, // Display Position - Partial Display 2 (R83h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0084, 0x0000,}, // RAM Address Start - Partial Display 2 (R84h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0085, 0x0000,}, // RAM Address End - Partial Display 2 (R85h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0090, 0x0010,}, // Panel Interface Control 1 (R90h) Page 36, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0092, 0x0000,}, // Panel Interface Control 2 (R92h) Page 37, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0093, 0x0103,}, // Panel Interface control 3 (R93h) Page 38, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0095, 0x0210,}, // Panel Interface control 4 (R95h) Page 38, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0097, 0x0000,}, // Panel Interface Control 5 (R97h) Page 40, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0098, 0x0000,}, // Panel Interface Control 6 (R98h) Page 41, SPFD5408B Datasheet
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0173,}, // Display Control (R07h) Page 16, SPFD5408B Datasheet
+ {LCD_STEP_DONE, 0, 0},
+};
+
+const struct ubicom32lcd_panel cfaf240320ktts_180 = {
+ .desc = "CFAF240320KTTS 180",
+ .init_seq = cfaf240320ktts_init_180,
+ .horz_reg = 0x20,
+ .vert_reg = 0x21,
+ .gram_reg = 0x22,
+ .xres = 240,
+ .yres = 320,
+ .stride = 240,
+ .id = 0x5408,
+};
+#endif
+
+#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_P
+static const struct ubicom32lcd_step tft2n0369ep_init[] = {
+ {LCD_STEP_CMD_DATA, 0x0028, 0x0006},
+ {LCD_STEP_CMD_DATA, 0x0000, 0x0001},
+ {LCD_STEP_SLEEP, 0, 15},
+ {LCD_STEP_CMD_DATA, 0x002B, 0x9532},
+ {LCD_STEP_CMD_DATA, 0x0003, 0xAAAC},
+ {LCD_STEP_CMD_DATA, 0x000C, 0x0002},
+ {LCD_STEP_CMD_DATA, 0x000D, 0x000A},
+ {LCD_STEP_CMD_DATA, 0x000E, 0x2C00},
+ {LCD_STEP_CMD_DATA, 0x001E, 0x00AA},
+ {LCD_STEP_CMD_DATA, 0x0025, 0x8000},
+ {LCD_STEP_SLEEP, 0, 15},
+ {LCD_STEP_CMD_DATA, 0x0001, 0x2B3F},
+ {LCD_STEP_CMD_DATA, 0x0002, 0x0600},
+ {LCD_STEP_CMD_DATA, 0x0010, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0011, 0x6030},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0005, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0006, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0016, 0xEF1C},
+ {LCD_STEP_CMD_DATA, 0x0017, 0x0003},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0233},
+ {LCD_STEP_CMD_DATA, 0x000B, 0x5312},
+ {LCD_STEP_CMD_DATA, 0x000F, 0x0000},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0041, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0042, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0048, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0049, 0x013F},
+ {LCD_STEP_CMD_DATA, 0x0044, 0xEF00},
+ {LCD_STEP_CMD_DATA, 0x0045, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0046, 0x013F},
+ {LCD_STEP_CMD_DATA, 0x004A, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x004B, 0x0000},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0030, 0x0707},
+ {LCD_STEP_CMD_DATA, 0x0031, 0x0704},
+ {LCD_STEP_CMD_DATA, 0x0032, 0x0204},
+ {LCD_STEP_CMD_DATA, 0x0033, 0x0201},
+ {LCD_STEP_CMD_DATA, 0x0034, 0x0203},
+ {LCD_STEP_CMD_DATA, 0x0035, 0x0204},
+ {LCD_STEP_CMD_DATA, 0x0036, 0x0204},
+ {LCD_STEP_CMD_DATA, 0x0037, 0x0502},
+ {LCD_STEP_CMD_DATA, 0x003A, 0x0302},
+ {LCD_STEP_CMD_DATA, 0x003B, 0x0500},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0044, 239 << 8 | 0},
+ {LCD_STEP_CMD_DATA, 0x0045, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0046, 319},
+ {LCD_STEP_DONE, 0, 0},
+};
+
+const struct ubicom32lcd_panel tft2n0369ep = {
+ .desc = "TFT2N0369E-Portrait",
+ .init_seq = tft2n0369ep_init,
+ .horz_reg = 0x4e,
+ .vert_reg = 0x4f,
+ .gram_reg = 0x22,
+ .xres = 240,
+ .yres = 320,
+ .stride = 240,
+ .id = 0x8989,
+};
+#endif
+
+#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_L
+static const struct ubicom32lcd_step tft2n0369e_init[] = {
+ {LCD_STEP_CMD_DATA, 0x0028, 0x0006},
+ {LCD_STEP_CMD_DATA, 0x0000, 0x0001},
+ {LCD_STEP_SLEEP, 0, 15},
+ {LCD_STEP_CMD_DATA, 0x002B, 0x9532},
+ {LCD_STEP_CMD_DATA, 0x0003, 0xAAAC},
+ {LCD_STEP_CMD_DATA, 0x000C, 0x0002},
+ {LCD_STEP_CMD_DATA, 0x000D, 0x000A},
+ {LCD_STEP_CMD_DATA, 0x000E, 0x2C00},
+ {LCD_STEP_CMD_DATA, 0x001E, 0x00AA},
+ {LCD_STEP_CMD_DATA, 0x0025, 0x8000},
+ {LCD_STEP_SLEEP, 0, 15},
+ {LCD_STEP_CMD_DATA, 0x0001, 0x2B3F},
+ {LCD_STEP_CMD_DATA, 0x0002, 0x0600},
+ {LCD_STEP_CMD_DATA, 0x0010, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0011, 0x60A8},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0005, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0006, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0016, 0xEF1C},
+ {LCD_STEP_CMD_DATA, 0x0017, 0x0003},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0233},
+ {LCD_STEP_CMD_DATA, 0x000B, 0x5312},
+ {LCD_STEP_CMD_DATA, 0x000F, 0x0000},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0041, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0042, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0048, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0049, 0x013F},
+ {LCD_STEP_CMD_DATA, 0x0044, 0xEF00},
+ {LCD_STEP_CMD_DATA, 0x0045, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0046, 0x013F},
+ {LCD_STEP_CMD_DATA, 0x004A, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x004B, 0x0000},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0030, 0x0707},
+ {LCD_STEP_CMD_DATA, 0x0031, 0x0704},
+ {LCD_STEP_CMD_DATA, 0x0032, 0x0204},
+ {LCD_STEP_CMD_DATA, 0x0033, 0x0201},
+ {LCD_STEP_CMD_DATA, 0x0034, 0x0203},
+ {LCD_STEP_CMD_DATA, 0x0035, 0x0204},
+ {LCD_STEP_CMD_DATA, 0x0036, 0x0204},
+ {LCD_STEP_CMD_DATA, 0x0037, 0x0502},
+ {LCD_STEP_CMD_DATA, 0x003A, 0x0302},
+ {LCD_STEP_CMD_DATA, 0x003B, 0x0500},
+ {LCD_STEP_SLEEP, 0, 20},
+ {LCD_STEP_CMD_DATA, 0x0044, 239 << 8 | 0},
+ {LCD_STEP_CMD_DATA, 0x0045, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0046, 319},
+ {LCD_STEP_DONE, 0, 0},
+};
+
+const struct ubicom32lcd_panel tft2n0369e = {
+ .desc = "TFT2N0369E-Landscape",
+ .init_seq = tft2n0369e_init,
+ .horz_reg = 0x4e,
+ .vert_reg = 0x4f,
+ .gram_reg = 0x22,
+ .xres = 320,
+ .yres = 240,
+ .stride = 320,
+ .id = 0x8989,
+};
+#endif
+
+#ifdef CONFIG_LCD_UBICOM32_CFAF240400D
+static const struct ubicom32lcd_step cfaf240400d_init[] = {
+ {LCD_STEP_CMD_DATA, 0x0606, 0x0000}, // Pin Control (R606h) // Page 41 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0001}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0110, 0x0001}, // Power Control 6(R110h) // Page 30 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0100, 0x17B0}, // Power Control 1 (R100h) // Page 26 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0101, 0x0147}, // Power Control 2 (R101h) // Page 27 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0102, 0x019D}, // Power Control 3 (R102h) // Page 28 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0103, 0x3600}, // Power Control 4 (R103h) // Page 29 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0281, 0x0010}, // NVM read data 2 (R281h) // Page 34 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0102, 0x01BD}, // Power Control 3 (R102h) // Page 28 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+
+ //--------------- Power control 1~6 ---------------//
+ {LCD_STEP_CMD_DATA, 0x0100, 0x16B0}, // Power Control 1 (R100h) // Page 26 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0101, 0x0147}, // Power Control 2 (R101h) // Page 27 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0102, 0x01BD}, // Power Control 3 (R102h) // Page 28 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0103, 0x2d00}, // Power Control 4 (R103h) // Page 29 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0107, 0x0000}, // Power Control 5 (R107h) // Page 30 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0110, 0x0001}, // Power Control 6(R110h) // Page 30 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0280, 0x0000}, // NVM read data 1 (R280h) // Page 33 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0281, 0x0006}, // NVM read data 2 (R281h) // Page 34 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0282, 0x0000}, // NVM read data 3 (R282h) // Page 34 of SPFD5420A Datasheet
+
+ //------- Gamma 2.2 control (R300h to R30Fh) ------//
+ {LCD_STEP_CMD_DATA, 0x0300, 0x0101},
+ {LCD_STEP_CMD_DATA, 0x0301, 0x0b27},
+ {LCD_STEP_CMD_DATA, 0x0302, 0x132a},
+ {LCD_STEP_CMD_DATA, 0x0303, 0x2a13},
+ {LCD_STEP_CMD_DATA, 0x0304, 0x270b},
+ {LCD_STEP_CMD_DATA, 0x0305, 0x0101},
+ {LCD_STEP_CMD_DATA, 0x0306, 0x1205},
+ {LCD_STEP_CMD_DATA, 0x0307, 0x0512},
+ {LCD_STEP_CMD_DATA, 0x0308, 0x0005},
+ {LCD_STEP_CMD_DATA, 0x0309, 0x0003},
+ {LCD_STEP_CMD_DATA, 0x030A, 0x0f04},
+ {LCD_STEP_CMD_DATA, 0x030B, 0x0f00},
+ {LCD_STEP_CMD_DATA, 0x030C, 0x000f},
+ {LCD_STEP_CMD_DATA, 0x030D, 0x040f},
+ {LCD_STEP_CMD_DATA, 0x030E, 0x0300},
+ {LCD_STEP_CMD_DATA, 0x030F, 0x0500},
+
+ {LCD_STEP_CMD_DATA, 0x0400, 0x3500}, // Base Image Number of Line (R400h) // Page 36 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0401, 0x0001}, // Base Image Display Control (R401h) // Page 39 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0404, 0x0000}, // Based Image Vertical Scroll Control (R404h) // Page 40 of SPFD5420A Datasheet
+
+ //--------------- Normal set ---------------//
+ {LCD_STEP_CMD_DATA, 0x0000, 0x0000}, // ID Read Register (R000h) // Page 13 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0001, 0x0100}, // Driver Output Control Register (R001h) // Page 14 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0002, 0x0100}, // LCD Driving Waveform Control (R002h) // Page 14 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0003, 0x1030}, // Entry Mode (R003h) // Page 15 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0006, 0x0000}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0008, 0x0808}, // Display Control 2 (R008h) // Page 17 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0009, 0x0001}, // Display Control 3 (R009h) // Page 18 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x000B, 0x0010}, // Low Power Control (R00Bh) // Page 19 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x000C, 0x0000}, // External Display Interface Control 1 (R00Ch) // Page 19 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x000F, 0x0000}, // External Display Interface Control 2 (R00Fh) // Page 20 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0001}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet
+
+ //--------------- Panel interface control 1~6 ---------------//
+ {LCD_STEP_CMD_DATA, 0x0010, 0x0012}, // Panel Interface Control 1 (R010h) // Page 20 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0011, 0x0202}, // Panel Interface Control 2 (R011h) // Page 21 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0012, 0x0300}, // Panel Interface control 3 (R012h) // Page 22 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0020, 0x021E}, // Panel Interface control 4 (R020h) // Page 22 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0021, 0x0202}, // Panel Interface Control 5 (021Rh) // Page 24 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0022, 0x0100}, // Panel Interface Control 6 (R022h) // Page 25 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0090, 0x8000}, // Frame Marker Control (R090h) // Page 25 of SPFD5420A Datasheet
+
+ //--------------- Partial display ---------------//
+ {LCD_STEP_CMD_DATA, 0x0210, 0x0000}, // Window Horizontal RAM Address Start (R210h) // Page 35 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0211, 0x00EF}, // Window Horziontal RAM Address End (R211h) // Page 35 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0212, 0x0000}, // Window Vertical RAM Address Start (R212h) // Page 35 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0213, 0x018F}, // Window Vertical RAM Address End (R213h) // Page 35 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0500, 0x0000}, // Display Position - Partial Display 1 (R500h) // Page 40 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0501, 0x0000}, // RAM Address Start - Partial Display 1 (R501h)// Page 40 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0502, 0x0000}, // RAM Address End - Partail Display 1 (R502h) // Page 40 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0503, 0x0000}, // Display Position - Partial Display 2 (R503h) // Page 40 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0504, 0x0000}, // RAM Address Start . Partial Display 2 (R504h)// Page 41 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0505, 0x0000}, // RAM Address End . Partial Display 2 (R505h) // Page 41 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0606, 0x0000}, // Pin Control (R606h) // Page 41 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x06F0, 0x0000}, // NVM Access Control (R6F0h) // Page 41 of SPFD5420A Datasheet
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0173}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 50},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0171}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet
+ {LCD_STEP_SLEEP, 0, 10},
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0173}, // Display Control 1 (R007h) // Page 16 of SPFD5420A Datasheet
+ {LCD_STEP_DONE, 0, 0},
+};
+
+const struct ubicom32lcd_panel cfaf240400d = {
+ .desc = "CFAF240400D",
+ .init_seq = cfaf240400d_init,
+ .horz_reg = 0x0200,
+ .vert_reg = 0x0201,
+ .gram_reg = 0x0202,
+ .xres = 240,
+ .yres = 400,
+ .stride = 240,
+ .id = 0x5420,
+};
+#endif
+
+#ifdef CONFIG_LCD_UBICOM32_CFAF240400F
+static const struct ubicom32lcd_step cfaf320240f_init[] = {
+ {LCD_STEP_CMD_DATA, 0x0028, 0x0006}, // VCOM OTP Page 55-56 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0000, 0x0001}, // start Oscillator Page 36 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0010, 0x0000}, // Sleep mode Page 49 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0001, 0x32EF}, // Driver Output Control Page 36-39 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0002, 0x0600}, // LCD Driving Waveform Control Page 40-42 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0003, 0x6A38}, // Power Control 1 Page 43-44 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0011, 0x6870}, // Entry Mode Page 50-52 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0X000F, 0x0000}, // Gate Scan Position Page 49 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0X000B, 0x5308}, // Frame Cycle Control Page 45 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x000C, 0x0003}, // Power Control 2 Page 47 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x000D, 0x000A}, // Power Control 3 Page 48 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x000E, 0x2E00}, // Power Control 4 Page 48 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x001E, 0x00BE}, // Power Control 5 Page 53 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0025, 0x8000}, // Frame Frequency Control Page 53 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0026, 0x7800}, // Analog setting Page 54 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x004E, 0x0000}, // Ram Address Set Page 58 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x004F, 0x0000}, // Ram Address Set Page 58 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0012, 0x08D9}, // Sleep mode Page 49 of SSD2119 datasheet
+
+ // Gamma Control (R30h to R3Bh) -- Page 56 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0030, 0x0000},
+ {LCD_STEP_CMD_DATA, 0x0031, 0x0104},
+ {LCD_STEP_CMD_DATA, 0x0032, 0x0100},
+ {LCD_STEP_CMD_DATA, 0x0033, 0x0305},
+ {LCD_STEP_CMD_DATA, 0x0034, 0x0505},
+ {LCD_STEP_CMD_DATA, 0x0035, 0x0305},
+ {LCD_STEP_CMD_DATA, 0x0036, 0x0707},
+ {LCD_STEP_CMD_DATA, 0x0037, 0x0300},
+ {LCD_STEP_CMD_DATA, 0x003A, 0x1200},
+ {LCD_STEP_CMD_DATA, 0x003B, 0x0800},
+
+ {LCD_STEP_CMD_DATA, 0x0007, 0x0033}, // Display Control Page 45 of SSD2119 datasheet
+
+ {LCD_STEP_CMD_DATA, 0x0044, 0xEF00}, // Vertical RAM address position Page 57 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0045, 0x0000}, // Horizontal RAM address position Page 57 of SSD2119 datasheet
+ {LCD_STEP_CMD_DATA, 0x0046, 0x013F}, // Horizontal RAM address position Page 57 of SSD2119 datasheet
+
+ {LCD_STEP_SLEEP, 0, 150},
+
+ {LCD_STEP_DONE, 0, 0},
+};
+
+const struct ubicom32lcd_panel cfaf320240f = {
+ .desc = "CFAF320240F",
+ .init_seq = cfaf320240f_init,
+ .horz_reg = 0x4e,
+ .vert_reg = 0x4f,
+ .gram_reg = 0x22,
+ .xres = 320,
+ .yres = 240,
+ .stride = 320,
+ .id = 0x9919,
+};
+#endif
+
+const struct ubicom32lcd_panel *ubicom32lcd_panels[] = {
+#ifdef CONFIG_LCD_UBICOM32_CFAF240400KTTS_180
+ &cfaf240320ktts_180,
+#endif
+#ifdef CONFIG_LCD_UBICOM32_CFAF240400KTTS
+ &cfaf240320ktts_0,
+#endif
+#ifdef CONFIG_LCD_UBICOM32_CFAF240400D
+ &cfaf240400d,
+#endif
+#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_P
+ &tft2n0369ep,
+#endif
+#ifdef CONFIG_LCD_UBICOM32_TFT2N0369E_L
+ &tft2n0369e,
+#endif
+#ifdef CONFIG_LCD_UBICOM32_CFAF240400F
+ &cfaf320240f,
+#endif
+ NULL,
+};
+
+#endif
diff --git a/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c
new file mode 100644
index 0000000..6aeed43
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/backlight/ubicom32lcdpower.c
@@ -0,0 +1,194 @@
+/*
+ * drivers/video/backlight/ubicom32lcdpowerpower.c
+ * LCD power driver for the Ubicom32 platform
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/lcd.h>
+#include <linux/fb.h>
+#include <linux/gpio.h>
+
+#include <asm/ubicom32lcdpower.h>
+#include <asm/ip5000.h>
+
+#define DRIVER_NAME "ubicom32lcdpower"
+
+struct ubicom32lcdpower_data {
+ /*
+ * Pointer to the platform data structure. Keep this around since we need values
+ * from it to set the backlight intensity.
+ */
+ const struct ubicom32lcdpower_platform_data *pdata;
+
+ /*
+ * LCD device, we have to save this for use when we remove ourselves.
+ */
+ struct lcd_device *lcddev;
+};
+
+/*
+ * ubicom32lcdpower_set_power
+ */
+static int ubicom32lcdpower_set_power(struct lcd_device *ld, int power)
+{
+ struct ubicom32lcdpower_data *ud = (struct ubicom32lcdpower_data *)lcd_get_data(ld);
+ if (power == FB_BLANK_UNBLANK) {
+ gpio_direction_output(ud->pdata->vgh_gpio, ud->pdata->vgh_polarity);
+ return 0;
+ }
+
+ gpio_direction_output(ud->pdata->vgh_gpio, !ud->pdata->vgh_polarity);
+ return 0;
+}
+
+/*
+ * ubicom32lcdpower_get_power
+ */
+static int ubicom32lcdpower_get_power(struct lcd_device *ld)
+{
+ struct ubicom32lcdpower_data *ud = (struct ubicom32lcdpower_data *)lcd_get_data(ld);
+ int vgh = gpio_get_value(ud->pdata->vgh_gpio);
+ if ((vgh && ud->pdata->vgh_polarity) || (!vgh && !ud->pdata->vgh_polarity)) {
+ return 1;
+ }
+
+ return 0;
+}
+
+static struct lcd_ops ubicom32lcdpower_ops = {
+ .get_power = ubicom32lcdpower_get_power,
+ .set_power = ubicom32lcdpower_set_power,
+};
+
+/*
+ * ubicom32lcdpower_probe
+ */
+static int ubicom32lcdpower_probe(struct platform_device *pdev)
+{
+ const struct ubicom32lcdpower_platform_data *pdata = pdev->dev.platform_data;
+ struct ubicom32lcdpower_data *ud;
+ struct lcd_device *lcddev;
+ int retval;
+
+ /*
+ * Check to see if we have any platform data, if we don't have a LCD to control
+ */
+ if (!pdata) {
+ return -ENODEV;
+ }
+
+ /*
+ * Allocate our private data
+ */
+ ud = kzalloc(sizeof(struct ubicom32lcdpower_data), GFP_KERNEL);
+ if (!ud) {
+ return -ENOMEM;
+ }
+
+ ud->pdata = pdata;
+
+ /*
+ * Request our GPIOs
+ */
+ retval = gpio_request(pdata->vgh_gpio, "vgh");
+ if (retval) {
+ dev_err(&pdev->dev, "Failed to allocate vgh GPIO\n");
+ goto fail_gpio;
+ }
+
+ /*
+ * Register our lcd device
+ */
+ lcddev = lcd_device_register(DRIVER_NAME, &pdev->dev, ud, &ubicom32lcdpower_ops);
+ if (IS_ERR(lcddev)) {
+ retval = PTR_ERR(lcddev);
+ goto fail;
+ }
+
+ ud->lcddev = lcddev;
+ platform_set_drvdata(pdev, ud);
+
+ ubicom32lcdpower_set_power(lcddev, FB_BLANK_UNBLANK);
+
+ printk(KERN_INFO DRIVER_NAME ": LCD driver started\n");
+
+ return 0;
+
+fail:
+ gpio_free(pdata->vgh_gpio);
+
+fail_gpio:
+ platform_set_drvdata(pdev, NULL);
+ kfree(ud);
+ return retval;
+}
+
+/*
+ * ubicom32lcdpower_remove
+ */
+static int __exit ubicom32lcdpower_remove(struct platform_device *pdev)
+{
+ struct ubicom32lcdpower_data *ud = platform_get_drvdata(pdev);
+
+ lcd_device_unregister(ud->lcddev);
+ platform_set_drvdata(pdev, NULL);
+ kfree(ud);
+
+ return 0;
+}
+
+static struct platform_driver ubicom32lcdpower_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+
+ .remove = __exit_p(ubicom32lcdpower_remove),
+};
+
+/*
+ * ubicom32lcdpower_init
+ */
+static int __init ubicom32lcdpower_init(void)
+{
+ return platform_driver_probe(&ubicom32lcdpower_driver, ubicom32lcdpower_probe);
+}
+module_init(ubicom32lcdpower_init);
+
+/*
+ * ubicom32lcdpower_exit
+ */
+static void __exit ubicom32lcdpower_exit(void)
+{
+ platform_driver_unregister(&ubicom32lcdpower_driver);
+}
+module_exit(ubicom32lcdpower_exit);
+
+MODULE_AUTHOR("Patrick Tjin <@ubicom.com>");
+MODULE_DESCRIPTION("Ubicom32 lcd power driver");
+MODULE_LICENSE("GPL");
diff --git a/target/linux/ubicom32/files/drivers/video/ubicom32fb.c b/target/linux/ubicom32/files/drivers/video/ubicom32fb.c
new file mode 100644
index 0000000..4193560
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/ubicom32fb.c
@@ -0,0 +1,779 @@
+/*
+ * drivers/video/ubicom32fb.c
+ * Ubicom32 frame buffer driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+
+/*
+ * This driver was based on skeletonfb.c, Skeleton for a frame buffer device by
+ * Geert Uytterhoeven.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/uaccess.h>
+#include <linux/interrupt.h>
+
+#include <asm/io.h>
+#include <asm/ip5000.h>
+#include <asm/vdc_tio.h>
+#include <asm/ubicom32fb.h>
+
+#define DRIVER_NAME "ubicom32fb"
+#define DRIVER_DESCRIPTION "Ubicom32 frame buffer driver"
+
+#define PALETTE_ENTRIES_NO 16
+
+/*
+ * Option variables
+ *
+ * vram_size: VRAM size in kilobytes, subject to alignment
+ */
+static int vram_size = 0;
+module_param(vram_size, int, 0);
+MODULE_PARM_DESC(vram, "VRAM size, in kilobytes to allocate, should be at least the size of one screen, subject to alignment");
+static int init_value = 0;
+module_param(init_value, int, 0);
+MODULE_PARM_DESC(init, "Initial value of the framebuffer (16-bit number).");
+
+/*
+ * fb_fix_screeninfo defines the non-changeable properties of the VDC, depending on what mode it is in.
+ */
+static struct fb_fix_screeninfo ubicom32fb_fix = {
+ .id = "Ubicom32",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .accel = FB_ACCEL_UBICOM32,
+};
+
+/*
+ * Filled in at probe time when we find out what the hardware supports
+ */
+static struct fb_var_screeninfo ubicom32fb_var;
+
+/*
+ * Private data structure
+ */
+struct ubicom32fb_drvdata {
+ struct fb_info *fbinfo;
+ bool cmap_alloc;
+
+ /*
+ * The address of the framebuffer in memory
+ */
+ void *fb;
+ void *fb_aligned;
+
+ /*
+ * Total size of vram including alignment allowance
+ */
+ u32 total_vram_size;
+
+ /*
+ * Interrupt to set when changing registers
+ */
+ u32 vp_int;
+
+ /*
+ * Optional: Interrupt used by TIO to signal us
+ */
+ u32 rx_int;
+
+ /*
+ * Base address of the regs for VDC_TIO
+ */
+ volatile struct vdc_tio_vp_regs *regs;
+
+ /*
+ * non-zero if we are in yuv mode
+ */
+ u8_t is_yuv;
+
+ /*
+ * Fake palette of 16 colors
+ */
+ u32 pseudo_palette[PALETTE_ENTRIES_NO];
+
+ /*
+ * Wait queue and lock used to block when we need to wait
+ * for something to happen.
+ */
+ wait_queue_head_t waitq;
+ struct mutex lock;
+
+};
+
+/*
+ * ubicom32fb_set_next_frame
+ * Sets the next frame buffer to display
+ *
+ * if sync is TRUE then this function will block until the hardware
+ * acknowledges the change
+ */
+static inline void ubicom32fb_set_next_frame(struct ubicom32fb_drvdata *ud, void *fb, u8_t sync)
+{
+ ud->regs->next_frame_flags = ud->is_yuv ? VDCTIO_NEXT_FRAME_FLAG_YUV : 0;
+ ud->regs->next_frame = (void *)((u32_t)fb | 1);
+
+ /*
+ * If we have interrupts, then we can wait on it
+ */
+ if (ud->rx_int != -1) {
+ DEFINE_WAIT(wait);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ud->lock, flags);
+ prepare_to_wait(&ud->waitq, &wait, TASK_INTERRUPTIBLE);
+ spin_unlock_irqrestore(&ud->lock, flags);
+ schedule();
+ finish_wait(&ud->waitq, &wait);
+ return;
+ }
+
+ /*
+ * No interrupt, we will just spin here
+ */
+ while (sync && ((u32_t)ud->regs->next_frame & 1));
+}
+
+/*
+ * ubicom32fb_send_command
+ * Sends a command/data pair to the VDC
+ */
+static inline void ubicom32fb_send_command(struct ubicom32fb_drvdata *ud, u16 command, u8_t block)
+{
+ ud->regs->command = command;
+ ubicom32_set_interrupt(ud->vp_int);
+ while (block && ud->regs->command);
+}
+
+/*
+ * ubicom32fb_ioctl
+ * Handles any ioctls sent to us
+ */
+static int ubicom32fb_ioctl(struct fb_info *fbi, unsigned int cmd,
+ unsigned long arg)
+{
+ struct ubicom32fb_drvdata *ud = (struct ubicom32fb_drvdata *)fbi->par;
+ void __user *argp = (void __user *)arg;
+ int retval = -EFAULT;
+
+ switch (cmd) {
+ case UBICOM32FB_IOCTL_SET_NEXT_FRAME_SYNC:
+ // check alignment, return -EINVAL if necessary
+ ubicom32fb_set_next_frame(ud, argp, 1);
+ retval = 0;
+ break;
+
+ case UBICOM32FB_IOCTL_SET_NEXT_FRAME:
+ // check alignment, return -EINVAL if necessary
+ ubicom32fb_set_next_frame(ud, argp, 0);
+ retval = 0;
+ break;
+
+ case UBICOM32FB_IOCTL_SET_MODE:
+ if (!(ud->regs->caps & VDCTIO_CAPS_SUPPORTS_SCALING)) {
+ break;
+ } else {
+ struct ubicom32fb_mode mode;
+ volatile struct vdc_tio_vp_regs *regs = ud->regs;
+ u32_t flags = 0;
+
+ if (copy_from_user(&mode, argp, sizeof(mode))) {
+ break;
+ }
+
+ regs->x_in = mode.width;
+ regs->y_in = mode.height;
+ regs->x_out = regs->xres;
+ regs->y_out = regs->yres;
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_YUV_SCAN_ORDER) {
+ flags |= VDCTIO_SCALE_FLAG_YUV_SCAN_ORDER;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_YUV_BLOCK_ORDER) {
+ flags |= VDCTIO_SCALE_FLAG_YUV_BLOCK_ORDER;
+ }
+ ud->is_yuv = mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_YUV;
+ if (ud->is_yuv) {
+ flags |= VDCTIO_SCALE_FLAG_YUV;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_VRANGE_16_255) {
+ flags |= VDCTIO_SCALE_FLAG_VRANGE_16_255;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_VRANGE_0_255) {
+ flags |= VDCTIO_SCALE_FLAG_VRANGE_0_255;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_VSUB) {
+ flags |= VDCTIO_SCALE_FLAG_VSUB;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_HSUB_2_1) {
+ flags |= VDCTIO_SCALE_FLAG_HSUB_2_1;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_HSUB_1_1) {
+ flags |= VDCTIO_SCALE_FLAG_HSUB_1_1;
+ }
+ if (mode.flags & UBICOM32FB_IOCTL_SET_MODE_FLAG_SCALE_ENABLE) {
+ flags |= VDCTIO_SCALE_FLAG_ENABLE;
+ }
+ if (mode.next_frame) {
+ flags |= VDCTIO_SCALE_FLAG_SET_FRAME_BUFFER;
+ regs->next_frame = mode.next_frame;
+ }
+
+ regs->scale_flags = flags;
+ ubicom32fb_send_command(ud, VDCTIO_COMMAND_SET_SCALE_MODE, 1);
+ retval = 0;
+ break;
+ }
+
+ default:
+ retval = -ENOIOCTLCMD;
+ break;
+ }
+
+ return retval;
+}
+
+/*
+ * ubicom32fb_interrupt
+ * Called by the OS when the TIO has set the rx_int
+ */
+static irqreturn_t ubicom32fb_interrupt(int vec, void *appdata)
+{
+ struct ubicom32fb_drvdata *ud = (struct ubicom32fb_drvdata *)appdata;
+
+ spin_lock(&ud->lock);
+ if (waitqueue_active(&ud->waitq)) {
+ wake_up(&ud->waitq);
+ }
+ spin_unlock(&ud->lock);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * ubicom32fb_pan_display
+ * Pans the display to a given location. Supports only y direction panning.
+ */
+static int ubicom32fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
+{
+ struct ubicom32fb_drvdata *ud = (struct ubicom32fb_drvdata *)fbi->par;
+ void *new_addr;
+
+ /*
+ * Get the last y line that would be displayed. Since we don't support YWRAP,
+ * it must be less than our virtual y size.
+ */
+ u32 lasty = var->yoffset + var->yres;
+ if (lasty > fbi->var.yres_virtual) {
+ /*
+ * We would fall off the end of our frame buffer if we panned here.
+ */
+ return -EINVAL;
+ }
+
+ if (var->xoffset) {
+ /*
+ * We don't support panning in the x direction
+ */
+ return -EINVAL;
+ }
+
+ /*
+ * Everything looks sane, go ahead and pan
+ *
+ * We have to calculate a new address for the VDC to look at
+ */
+ new_addr = ud->fb_aligned + (var->yoffset * fbi->fix.line_length);
+
+ /*
+ * Send down the command. The buffer will switch at the next vertical blank
+ */
+ ubicom32fb_set_next_frame(ud, (void *)new_addr, 0);
+
+ return 0;
+}
+
+/*
+ * ubicom32fb_setcolreg
+ * Sets a color in our virtual palette
+ */
+static int ubicom32fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi)
+{
+ u32 *palette = fbi->pseudo_palette;
+
+ if (regno >= PALETTE_ENTRIES_NO) {
+ return -EINVAL;
+ }
+
+ /*
+ * We only use 8 bits from each color
+ */
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ /*
+ * Convert any grayscale values
+ */
+ if (fbi->var.grayscale) {
+ u16 gray = red + green + blue;
+ gray += (gray >> 2) + (gray >> 3) - (gray >> 7);
+ gray >>= 2;
+ if (gray > 255) {
+ gray = 255;
+ }
+ red = gray;
+ blue = gray;
+ green = gray;
+ }
+
+ palette[regno] = (red << fbi->var.red.offset) | (green << fbi->var.green.offset) |
+ (blue << fbi->var.blue.offset);
+
+ return 0;
+}
+
+/*
+ * ubicom32fb_mmap
+ */
+static int ubicom32fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct ubicom32fb_drvdata *drvdata = (struct ubicom32fb_drvdata *)info->par;
+
+ vma->vm_start = (unsigned long)(drvdata->fb_aligned);
+
+ vma->vm_end = vma->vm_start + info->fix.smem_len;
+
+ /* For those who don't understand how mmap works, go read
+ * Documentation/nommu-mmap.txt.
+ * For those that do, you will know that the VM_MAYSHARE flag
+ * must be set in the vma->vm_flags structure on noMMU
+ * Other flags can be set, and are documented in
+ * include/linux/mm.h
+ */
+
+ vma->vm_flags |= VM_MAYSHARE | VM_SHARED;
+
+ return 0;
+}
+
+/*
+ * ubicom32fb_blank
+ */
+static int ubicom32fb_blank(int blank_mode, struct fb_info *fbi)
+{
+ return 0;
+#if 0
+ struct ubicom32fb_drvdata *drvdata = to_ubicom32fb_drvdata(fbi);
+
+ switch (blank_mode) {
+ case FB_BLANK_UNBLANK:
+ /* turn on panel */
+ ubicom32fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default);
+ break;
+
+ case FB_BLANK_NORMAL:
+ case FB_BLANK_VSYNC_SUSPEND:
+ case FB_BLANK_HSYNC_SUSPEND:
+ case FB_BLANK_POWERDOWN:
+ /* turn off panel */
+ ubicom32fb_out_be32(drvdata, REG_CTRL, 0);
+ default:
+ break;
+
+ }
+ return 0; /* success */
+#endif
+}
+
+static struct fb_ops ubicom32fb_ops =
+{
+ .owner = THIS_MODULE,
+ .fb_pan_display = ubicom32fb_pan_display,
+ .fb_setcolreg = ubicom32fb_setcolreg,
+ .fb_blank = ubicom32fb_blank,
+ .fb_mmap = ubicom32fb_mmap,
+ .fb_ioctl = ubicom32fb_ioctl,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+/*
+ * ubicom32fb_release
+ */
+static int ubicom32fb_release(struct device *dev)
+{
+ struct ubicom32fb_drvdata *ud = dev_get_drvdata(dev);
+
+#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
+ //ubicom32fb_blank(VESA_POWERDOWN, &drvdata->info);
+#endif
+
+ unregister_framebuffer(ud->fbinfo);
+
+ if (ud->cmap_alloc) {
+ fb_dealloc_cmap(&ud->fbinfo->cmap);
+ }
+
+ if (ud->fb) {
+ kfree(ud->fb);
+ }
+
+ if (ud->rx_int != -1) {
+ free_irq(ud->rx_int, ud);
+ }
+
+ /*
+ * Turn off the display
+ */
+ //ubicom32fb_out_be32(drvdata, REG_CTRL, 0);
+ //iounmap(drvdata->regs);
+
+ framebuffer_release(ud->fbinfo);
+ dev_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+/*
+ * ubicom32fb_platform_probe
+ */
+static int __init ubicom32fb_platform_probe(struct platform_device *pdev)
+{
+ struct ubicom32fb_drvdata *ud;
+ struct resource *irq_resource_rx;
+ struct resource *irq_resource_tx;
+ struct resource *mem_resource;
+ struct fb_info *fbinfo;
+ int rc;
+ size_t fbsize;
+ struct device *dev = &pdev->dev;
+ int offset;
+ struct vdc_tio_vp_regs *regs;
+
+ /*
+ * Get our resources
+ */
+ irq_resource_tx = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq_resource_tx) {
+ dev_err(dev, "No tx IRQ resource assigned\n");
+ return -ENODEV;
+ }
+
+ irq_resource_rx = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+ if (!irq_resource_rx) {
+ dev_err(dev, "No rx IRQ resource assigned\n");
+ return -ENODEV;
+ }
+
+ mem_resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_resource || !mem_resource->start) {
+ dev_err(dev, "No mem resource assigned\n");
+ return -ENODEV;
+ }
+ regs = (struct vdc_tio_vp_regs *)mem_resource->start;
+ if (regs->version != VDCTIO_VP_VERSION) {
+ dev_err(dev, "VDCTIO is not compatible with this driver tio:%x drv:%x\n",
+ regs->version, VDCTIO_VP_VERSION);
+ return -ENODEV;
+ }
+
+ /*
+ * This is the minimum VRAM size
+ */
+ fbsize = regs->xres * regs->yres * (regs->bpp / 8);
+ if (!vram_size) {
+ vram_size = (fbsize + 1023) / 1024;
+ } else {
+ if (fbsize > (vram_size * 1024)) {
+ dev_err(dev, "Not enough VRAM for display, need >= %u bytes\n", fbsize);
+ return -ENOMEM; // should be ebadparam?
+ }
+ }
+
+ /*
+ * Allocate the framebuffer instance + our private data
+ */
+ fbinfo = framebuffer_alloc(sizeof(struct ubicom32fb_drvdata), &pdev->dev);
+ if (!fbinfo) {
+ dev_err(dev, "Not enough memory to allocate instance.\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Fill in our private data.
+ */
+ ud = (struct ubicom32fb_drvdata *)fbinfo->par;
+ ud->fbinfo = fbinfo;
+ ud->regs = (struct vdc_tio_vp_regs *)(mem_resource->start);
+ dev_set_drvdata(dev, ud);
+
+ ud->vp_int = irq_resource_tx->start;
+
+ /*
+ * If we were provided an rx_irq then we need to init the appropriate
+ * queues, locks, and functions.
+ */
+ ud->rx_int = -1;
+ if (irq_resource_rx->start != DEVTREE_IRQ_NONE) {
+ init_waitqueue_head(&ud->waitq);
+ mutex_init(&ud->lock);
+ if (request_irq(ud->rx_int, ubicom32fb_interrupt, IRQF_SHARED, "ubicom32fb_rx", ud)) {
+ dev_err(dev, "Couldn't request rx IRQ\n");
+ rc = -ENOMEM;
+ goto fail;
+ }
+ ud->rx_int = irq_resource_rx->start;
+ }
+
+ /*
+ * Allocate and align the requested amount of VRAM
+ */
+ ud->total_vram_size = (vram_size * 1024) + regs->fb_align;
+ ud->fb = kmalloc(ud->total_vram_size, GFP_KERNEL);
+ if (ud->fb == NULL) {
+ dev_err(dev, "Couldn't allocate VRAM\n");
+ rc = -ENOMEM;
+ goto fail;
+ }
+
+ offset = (u32_t)ud->fb & (regs->fb_align - 1);
+ if (!offset) {
+ ud->fb_aligned = ud->fb;
+ } else {
+ offset = regs->fb_align - offset;
+ ud->fb_aligned = ud->fb + offset;
+ }
+
+ /*
+ * Clear the entire frame buffer
+ */
+ if (!init_value) {
+ memset(ud->fb_aligned, 0, vram_size * 1024);
+ } else {
+ unsigned short *p = ud->fb_aligned;
+ int i;
+ for (i = 0; i < ((vram_size * 1024) / sizeof(u16_t)); i++) {
+ *p++ = init_value;
+ }
+ }
+
+ /*
+ * Fill in the fb_var_screeninfo structure
+ */
+ memset(&ubicom32fb_var, 0, sizeof(ubicom32fb_var));
+ ubicom32fb_var.bits_per_pixel = regs->bpp;
+ ubicom32fb_var.red.offset = regs->rshift;
+ ubicom32fb_var.green.offset = regs->gshift;
+ ubicom32fb_var.blue.offset = regs->bshift;
+ ubicom32fb_var.red.length = regs->rbits;
+ ubicom32fb_var.green.length = regs->gbits;
+ ubicom32fb_var.blue.length = regs->bbits;
+ ubicom32fb_var.activate = FB_ACTIVATE_NOW;
+
+#if 0
+ /*
+ * Turn on the display
+ */
+ ud->reg_ctrl_default = REG_CTRL_ENABLE;
+ if (regs->rotate_screen)
+ ud->reg_ctrl_default |= REG_CTRL_ROTATE;
+ ubicom32fb_out_be32(ud, REG_CTRL, ud->reg_ctrl_default);
+#endif
+
+ /*
+ * Fill in the fb_info structure
+ */
+ ud->fbinfo->device = dev;
+ ud->fbinfo->screen_base = (void *)ud->fb_aligned;
+ ud->fbinfo->fbops = &ubicom32fb_ops;
+ ud->fbinfo->fix = ubicom32fb_fix;
+ ud->fbinfo->fix.smem_start = (u32)ud->fb_aligned;
+ ud->fbinfo->fix.smem_len = vram_size * 1024;
+ ud->fbinfo->fix.line_length = regs->xres * (regs->bpp / 8);
+ ud->fbinfo->fix.mmio_start = (u32)regs;
+ ud->fbinfo->fix.mmio_len = sizeof(struct vdc_tio_vp_regs);
+
+ /*
+ * We support panning in the y direction only
+ */
+ ud->fbinfo->fix.xpanstep = 0;
+ ud->fbinfo->fix.ypanstep = 1;
+
+ ud->fbinfo->pseudo_palette = ud->pseudo_palette;
+ ud->fbinfo->flags = FBINFO_DEFAULT;
+ ud->fbinfo->var = ubicom32fb_var;
+ ud->fbinfo->var.xres = regs->xres;
+ ud->fbinfo->var.yres = regs->yres;
+
+ /*
+ * We cannot pan in the X direction, so xres_virtual is regs->xres
+ * We can pan in the Y direction, so yres_virtual is vram_size / ud->fbinfo->fix.line_length
+ */
+ ud->fbinfo->var.xres_virtual = regs->xres;
+ ud->fbinfo->var.yres_virtual = (vram_size * 1024) / ud->fbinfo->fix.line_length;
+
+ //ud->fbinfo->var.height = regs->height_mm;
+ //ud->fbinfo->var.width = regs->width_mm;
+
+ /*
+ * Allocate a color map
+ */
+ rc = fb_alloc_cmap(&ud->fbinfo->cmap, PALETTE_ENTRIES_NO, 0);
+ if (rc) {
+ dev_err(dev, "Fail to allocate colormap (%d entries)\n",
+ PALETTE_ENTRIES_NO);
+ goto fail;
+ }
+ ud->cmap_alloc = true;
+
+ /*
+ * Register new frame buffer
+ */
+ rc = register_framebuffer(ud->fbinfo);
+ if (rc) {
+ dev_err(dev, "Could not register frame buffer\n");
+ goto fail;
+ }
+
+ /*
+ * Start up the VDC
+ */
+ ud->regs->next_frame = ud->fb;
+ ubicom32fb_send_command(ud, VDCTIO_COMMAND_START, 0);
+
+ /*
+ * Tell the log we are here
+ */
+ dev_info(dev, "fbaddr=%p align=%p, size=%uKB screen(%ux%u) virt(%ux%u), regs=%p irqtx=%u irqrx=%u\n",
+ ud->fb, ud->fb_aligned, vram_size, ud->fbinfo->var.xres, ud->fbinfo->var.yres,
+ ud->fbinfo->var.xres_virtual, ud->fbinfo->var.yres_virtual, ud->regs,
+ irq_resource_tx->start, irq_resource_rx->start);
+
+ /*
+ * Success
+ */
+ return 0;
+
+fail:
+ ubicom32fb_release(dev);
+ return rc;
+}
+
+/*
+ * ubicom32fb_platform_remove
+ */
+static int ubicom32fb_platform_remove(struct platform_device *pdev)
+{
+ dev_info(&(pdev->dev), "Ubicom32 FB Driver Remove\n");
+ return ubicom32fb_release(&pdev->dev);
+}
+
+static struct platform_driver ubicom32fb_platform_driver = {
+ .probe = ubicom32fb_platform_probe,
+ .remove = ubicom32fb_platform_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+#ifndef MODULE
+/*
+ * ubicom32fb_setup
+ * Process kernel boot options
+ */
+static int __init ubicom32fb_setup(char *options)
+{
+ char *this_opt;
+
+ if (!options || !*options) {
+ return 0;
+ }
+
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!*this_opt) {
+ continue;
+ }
+
+ if (!strncmp(this_opt, "init_value=", 10)) {
+ init_value = simple_strtoul(this_opt + 11, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "vram_size=", 10)) {
+ vram_size = simple_strtoul(this_opt + 10, NULL, 0);
+ continue;
+ }
+ }
+ return 0;
+}
+#endif /* MODULE */
+
+/*
+ * ubicom32fb_init
+ */
+static int __devinit ubicom32fb_init(void)
+{
+#ifndef MODULE
+ /*
+ * Get kernel boot options (in 'video=ubicom32fb:<options>')
+ */
+ char *option = NULL;
+
+ if (fb_get_options(DRIVER_NAME, &option)) {
+ return -ENODEV;
+ }
+ ubicom32fb_setup(option);
+#endif /* MODULE */
+
+ return platform_driver_register(&ubicom32fb_platform_driver);
+}
+module_init(ubicom32fb_init);
+
+/*
+ * ubicom32fb_exit
+ */
+static void __exit ubicom32fb_exit(void)
+{
+ platform_driver_unregister(&ubicom32fb_platform_driver);
+}
+module_exit(ubicom32fb_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Patrick Tjin <@ubicom.com>");
+MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
diff --git a/target/linux/ubicom32/files/drivers/video/ubicom32plio80.c b/target/linux/ubicom32/files/drivers/video/ubicom32plio80.c
new file mode 100644
index 0000000..2e13fd7
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/ubicom32plio80.c
@@ -0,0 +1,780 @@
+/*
+ * drivers/video/ubicom32plio80.c
+ * Ubicom32 80 bus PLIO buffer driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * This driver was based on skeletonfb.c, Skeleton for a frame buffer device by
+ * Geert Uytterhoeven.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/uaccess.h>
+#include <asm/plio.h>
+
+#define DRIVER_NAME "ubicom32plio80"
+#define DRIVER_DESCRIPTION "Ubicom32 80 bus PLIO frame buffer driver"
+
+#define PALETTE_ENTRIES_NO 16
+
+/*
+ * Option variables
+ *
+ * vram_size: VRAM size in kilobytes, subject to alignment
+ */
+static int vram_size = 0;
+module_param(vram_size, int, 0);
+MODULE_PARM_DESC(vram_size, "VRAM size, in kilobytes to allocate, should be at least the size of one screen, subject to alignment");
+
+static int xres = 240;
+module_param(xres, int, 0);
+MODULE_PARM_DESC(xres, "x (horizontal) resolution");
+
+static int yres = 320;
+module_param(yres, int, 0);
+MODULE_PARM_DESC(yres, "y (vertical) resolution");
+
+static int bgr = 0;
+module_param(bgr, int, 0);
+MODULE_PARM_DESC(bgr, "display is BGR (Blue is MSB)");
+
+#define BITS_PER_PIXEL 16
+
+/*
+ * Buffer alignment, must not be 0
+ */
+#define UBICOM32PLIO80_ALIGNMENT 4
+
+/*
+ * PLIO FSM
+ * 16-bit data bus on port I
+ * CS on EXTCTL[6]
+ * WR on EXTCTL[4]
+ */
+static const plio_fctl_t plio_fctl = {
+ .fctl0 = {
+ .ptif_port_mode = PLIO_PORT_MODE_DI,
+ .ptif_portd_cfg = 0,
+ .ptif_porti_cfg = 3,
+ .edif_ds = 6,
+ .edif_cmp_mode = 1,
+ .ecif_extclk_ena = 0, // enable clock output on PD7 table 2.65/p111 says extctl[0]?
+ .icif_clk_src_sel = PLIO_CLK_IO,
+ },
+ .fctl2 = {
+ .icif_eclk_div = 10,
+ .icif_iclk_div = 10,
+ },
+
+ };
+
+ static const plio_config_t plio_config = {
+ .pfsm = {
+ /*
+ * Table 12.63
+ */
+ .grpsel[0] = {1,1,1,1,1,1,1,1,1,1},
+
+ /*
+ * Table 12.66 Counter load value
+ */
+ .cs_lut[0] = {0,0,0,0,0,0,0,0},
+
+ /*
+ * Table 2.75 PLIO PFSM Configuration Registers
+ */
+ // 3 2 1 0
+ .extctl_o_lut[0] = {0x3f, 0x2f, 0x3f, 0x3f},
+ // 7 6 5 4
+ .extctl_o_lut[1] = {0x3f, 0x3f, 0x3f, 0x2f},
+ },
+ .edif = {
+ .odr_oe = 0xffff,
+ },
+ .ecif = {
+ .output_ena = (1 << 6) | (1 << 4),
+ },
+};
+
+static const u32_t ubicom32plio80_plio_fsm[] = {
+ // 0-F
+ 0x00070007, 0x00070007,
+ 0x00070007, 0x00070007,
+ 0x00070007, 0x00070007,
+ 0x00070007, 0x00070007,
+
+ 0x16260806, 0x16260806,
+ 0x16260806, 0x16260806,
+ 0x16260806, 0x16260806,
+ 0x16260806, 0x16260806,
+
+ // 10 - 1f
+ 0x22061806, 0x22061806,
+ 0x22061806, 0x22061806,
+ 0x22061806, 0x22061806,
+ 0x22061806, 0x22061806,
+
+ 0x22061806, 0x22061806,
+ 0x22061806, 0x22061806,
+ 0x22061806, 0x22061806,
+ 0x22061806, 0x22061806,
+
+ // 20 - 2f
+ 0x00070806, 0x00070806,
+ 0x00070806, 0x00070806,
+ 0x00070806, 0x00070806,
+ 0x00070806, 0x00070806,
+
+ 0x00070806, 0x00070806,
+ 0x00070806, 0x00070806,
+ 0x00070806, 0x00070806,
+ 0x00070806, 0x00070806,
+};
+
+/*
+ * fb_fix_screeninfo defines the non-changeable properties of the VDC, depending on what mode it is in.
+ */
+static struct fb_fix_screeninfo ubicom32plio80_fix = {
+ .id = "Ubicom32",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .accel = FB_ACCEL_UBICOM32_PLIO80,
+};
+
+/*
+ * Filled in at probe time when we find out what the hardware supports
+ */
+static struct fb_var_screeninfo ubicom32plio80_var;
+
+/*
+ * Private data structure
+ */
+struct ubicom32plio80_drvdata {
+ struct fb_info *fbinfo;
+ bool cmap_alloc;
+
+ /*
+ * The address of the framebuffer in memory
+ */
+ void *fb;
+ void *fb_aligned;
+
+ /*
+ * Total size of vram including alignment allowance
+ */
+ u32 total_vram_size;
+
+ /*
+ * Fake palette of 16 colors
+ */
+ u32 pseudo_palette[PALETTE_ENTRIES_NO];
+
+ int irq_req;
+
+ /*
+ * Current pointer and bytes left to transfer with the PLIO
+ */
+ void *xfer_ptr;
+ u32 bytes_to_xfer;
+ u32 busy;
+};
+
+static struct platform_device *ubicom32plio80_platform_device;
+
+/*
+ * ubicom32plio80_isr
+ */
+static int ubicom32plio80_isr(int irq, void *appdata)
+{
+ struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)appdata;
+
+ if (!ud->bytes_to_xfer) {
+ ubicom32_disable_interrupt(TX_FIFO_INT(PLIO_PORT));
+ PLIO_NBR->intmask.txfifo_wm = 0;
+ ud->busy = 0;
+ return IRQ_HANDLED;
+ }
+
+ asm volatile (
+ ".rept 8 \n\t"
+ "move.4 (%[fifo]), (%[data])4++ \n\t"
+ ".endr \n\t"
+ : [data] "+a" (ud->xfer_ptr)
+ : [fifo] "a" (&PLIO_NBR->tx_lo)
+ );
+
+ ud->bytes_to_xfer -= 32;
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * ubicom32plio80_update
+ */
+static void ubicom32plio80_update(struct ubicom32plio80_drvdata *ud, u32 *fb)
+{
+ struct ubicom32_io_port *ri = (struct ubicom32_io_port *)RI;
+ struct ubicom32_io_port *rd = (struct ubicom32_io_port *)RD;
+
+ ud->xfer_ptr = fb;
+ ud->bytes_to_xfer = (xres * yres * 2) - 64;
+ ud->busy = 1;
+
+ ri->gpio_mask = 0;
+ rd->gpio_mask &= ~((1 << 4) | (1 << 2));
+
+ *(u32 *)(&PLIO_NBR->intclr) = ~0;
+ PLIO_NBR->intmask.txfifo_wm = 1;
+ PLIO_NBR->fifo_wm.tx = 8;
+ ubicom32_enable_interrupt(TX_FIFO_INT(PLIO_PORT));
+
+ asm volatile (
+ ".rept 16 \n\t"
+ "move.4 (%[fifo]), (%[data])4++ \n\t"
+ ".endr \n\t"
+ : [data] "+a" (ud->xfer_ptr)
+ : [fifo] "a" (&PLIO_NBR->tx_lo)
+ );
+}
+
+/*
+ * ubicom32plio80_pan_display
+ * Pans the display to a given location. Supports only y direction panning.
+ */
+static int ubicom32plio80_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
+{
+ struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)fbi->par;
+ void *new_addr;
+
+ /*
+ * Get the last y line that would be displayed. Since we don't support YWRAP,
+ * it must be less than our virtual y size.
+ */
+ u32 lasty = var->yoffset + var->yres;
+ if (lasty > fbi->var.yres_virtual) {
+ /*
+ * We would fall off the end of our frame buffer if we panned here.
+ */
+ return -EINVAL;
+ }
+
+ if (var->xoffset) {
+ /*
+ * We don't support panning in the x direction
+ */
+ return -EINVAL;
+ }
+
+ /*
+ * Everything looks sane, go ahead and pan
+ *
+ * We have to calculate a new address for the VDC to look at
+ */
+ new_addr = ud->fb_aligned + (var->yoffset * fbi->fix.line_length);
+
+ return 0;
+}
+
+/*
+ * ubicom32plio80_setcolreg
+ * Sets a color in our virtual palette
+ */
+static int ubicom32plio80_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi)
+{
+ u32 *palette = fbi->pseudo_palette;
+
+ if (regno >= PALETTE_ENTRIES_NO) {
+ return -EINVAL;
+ }
+
+ /*
+ * We only use 8 bits from each color
+ */
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ /*
+ * Convert any grayscale values
+ */
+ if (fbi->var.grayscale) {
+ u16 gray = red + green + blue;
+ gray += (gray >> 2) + (gray >> 3) - (gray >> 7);
+ gray >>= 2;
+ if (gray > 255) {
+ gray = 255;
+ }
+ red = gray;
+ blue = gray;
+ green = gray;
+ }
+
+ palette[regno] = (red << fbi->var.red.offset) | (green << fbi->var.green.offset) |
+ (blue << fbi->var.blue.offset);
+
+ return 0;
+}
+
+/*
+ * ubicom32plio80_mmap
+ */
+static int ubicom32plio80_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)info->par;
+
+ vma->vm_start = (unsigned long)(ud->fb_aligned);
+
+ vma->vm_end = vma->vm_start + info->fix.smem_len;
+
+ /* For those who don't understand how mmap works, go read
+ * Documentation/nommu-mmap.txt.
+ * For those that do, you will know that the VM_MAYSHARE flag
+ * must be set in the vma->vm_flags structure on noMMU
+ * Other flags can be set, and are documented in
+ * include/linux/mm.h
+ */
+
+ vma->vm_flags |= VM_MAYSHARE | VM_SHARED;
+
+ return 0;
+}
+
+/*
+ * ubicom32plio80_check_var
+ * Check the var, tweak it but don't change operational parameters.
+ */
+static int ubicom32plio80_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct ubicom32plio80_drvdata *ud = (struct ubicom32plio80_drvdata *)info->par;
+ u32 line_size = var->xres * (BITS_PER_PIXEL / 8);
+
+ /*
+ * See if we can handle this bpp
+ */
+ if (var->bits_per_pixel > BITS_PER_PIXEL) {
+ return -EINVAL;
+ }
+ var->bits_per_pixel = BITS_PER_PIXEL;
+
+ /*
+ * See if we have enough memory to handle this resolution
+ */
+ if ((line_size * var->yres * BITS_PER_PIXEL / 8) > ud->total_vram_size) {
+ return -EINVAL;
+ }
+
+ var->xres_virtual = var->xres;
+ var->yres_virtual = ud->total_vram_size / line_size;
+
+ var->red.length = 5;
+ var->green.length = 6;
+ var->green.offset = 5;
+ var->blue.length = 5;
+ var->transp.offset = var->transp.length = 0;
+
+ if (bgr) {
+ var->red.offset = 0;
+ var->blue.offset = 11;
+ } else {
+ var->red.offset = 11;
+ var->blue.offset = 0;
+ }
+
+ var->nonstd = 0;
+ var->height = -1;
+ var->width = -1;
+ var->vmode = FB_VMODE_NONINTERLACED;
+ var->sync = 0;
+
+ return 0;
+}
+
+/*
+ * ubicom32plio80_set_par
+ * Set the video mode according to info->var
+ */
+static int ubicom32plio80_set_par(struct fb_info *info)
+{
+ /*
+ * Anything changed?
+ */
+ if ((xres == info->var.xres) && (yres == info->var.yres)) {
+ return 0;
+ }
+
+ /*
+ * Implement changes
+ */
+ xres = info->var.xres;
+ yres = info->var.yres;
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ info->fix.xpanstep = 0;
+ info->fix.ypanstep = 1;
+ info->fix.line_length = xres * (BITS_PER_PIXEL / 8);
+
+ return 0;
+}
+
+/*
+ * ubicom32plio80_ops
+ * List of supported operations
+ */
+static struct fb_ops ubicom32plio80_ops =
+{
+ .owner = THIS_MODULE,
+ .fb_pan_display = ubicom32plio80_pan_display,
+ .fb_setcolreg = ubicom32plio80_setcolreg,
+ .fb_mmap = ubicom32plio80_mmap,
+ .fb_check_var = ubicom32plio80_check_var,
+ .fb_set_par = ubicom32plio80_set_par,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+/*
+ * ubicom32plio80_release
+ */
+static int ubicom32plio80_release(struct device *dev)
+{
+ struct ubicom32plio80_drvdata *ud = dev_get_drvdata(dev);
+
+ unregister_framebuffer(ud->fbinfo);
+
+ if (ud->irq_req) {
+ free_irq(TX_FIFO_INT(PLIO_PORT), ud);
+ }
+ if (ud->cmap_alloc) {
+ fb_dealloc_cmap(&ud->fbinfo->cmap);
+ }
+
+ if (ud->fb) {
+ kfree(ud->fb);
+ }
+
+ framebuffer_release(ud->fbinfo);
+ dev_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+/*
+ * ubicom32plio80_platform_probe
+ */
+static int __init ubicom32plio80_platform_probe(struct platform_device *pdev)
+{
+ struct ubicom32plio80_drvdata *ud;
+ struct fb_info *fbinfo;
+ int rc;
+ size_t fbsize;
+ struct device *dev = &pdev->dev;
+ int offset;
+
+ /*
+ * This is the minimum VRAM size
+ */
+ fbsize = xres * yres * 2;
+ if (!vram_size) {
+ vram_size = (fbsize + 1023) / 1024;
+ } else {
+ if (fbsize > (vram_size * 1024)) {
+ dev_err(dev, "Not enough VRAM for display, need >= %u bytes\n", fbsize);
+ return -ENOMEM; // should be ebadparam?
+ }
+ }
+
+ /*
+ * Allocate the framebuffer instance + our private data
+ */
+ fbinfo = framebuffer_alloc(sizeof(struct ubicom32plio80_drvdata), &pdev->dev);
+ if (!fbinfo) {
+ dev_err(dev, "Not enough memory to allocate instance.\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Fill in our private data.
+ */
+ ud = (struct ubicom32plio80_drvdata *)fbinfo->par;
+ ud->fbinfo = fbinfo;
+ dev_set_drvdata(dev, ud);
+
+ /*
+ * Allocate and align the requested amount of VRAM
+ */
+ ud->total_vram_size = (vram_size * 1024) + UBICOM32PLIO80_ALIGNMENT;
+ ud->fb = kmalloc(ud->total_vram_size, GFP_KERNEL);
+ if (ud->fb == NULL) {
+ dev_err(dev, "Couldn't allocate VRAM\n");
+ rc = -ENOMEM;
+ goto fail;
+ }
+
+ offset = (u32_t)ud->fb & (UBICOM32PLIO80_ALIGNMENT - 1);
+ if (!offset) {
+ ud->fb_aligned = ud->fb;
+ } else {
+ offset = UBICOM32PLIO80_ALIGNMENT - offset;
+ ud->fb_aligned = ud->fb + offset;
+ }
+
+ /*
+ * Clear the entire frame buffer
+ */
+ memset(ud->fb_aligned, 0, vram_size * 1024);
+
+ /*
+ * Fill in the fb_var_screeninfo structure
+ */
+ memset(&ubicom32plio80_var, 0, sizeof(ubicom32plio80_var));
+ ubicom32plio80_var.bits_per_pixel = BITS_PER_PIXEL;
+ ubicom32plio80_var.red.length = 5;
+ ubicom32plio80_var.green.length = 6;
+ ubicom32plio80_var.green.offset = 5;
+ ubicom32plio80_var.blue.length = 5;
+ ubicom32plio80_var.activate = FB_ACTIVATE_NOW;
+
+ if (bgr) {
+ ubicom32plio80_var.red.offset = 0;
+ ubicom32plio80_var.blue.offset = 11;
+ } else {
+ ubicom32plio80_var.red.offset = 11;
+ ubicom32plio80_var.blue.offset = 0;
+ }
+
+ /*
+ * Fill in the fb_info structure
+ */
+ ud->fbinfo->device = dev;
+ ud->fbinfo->screen_base = (void *)ud->fb_aligned;
+ ud->fbinfo->fbops = &ubicom32plio80_ops;
+ ud->fbinfo->fix = ubicom32plio80_fix;
+ ud->fbinfo->fix.smem_start = (u32)ud->fb_aligned;
+ ud->fbinfo->fix.smem_len = vram_size * 1024;
+ ud->fbinfo->fix.line_length = xres * 2;
+ ud->fbinfo->fix.mmio_start = (u32)ud;
+ ud->fbinfo->fix.mmio_len = sizeof(struct ubicom32plio80_drvdata);
+
+ /*
+ * We support panning in the y direction only
+ */
+ ud->fbinfo->fix.xpanstep = 0;
+ ud->fbinfo->fix.ypanstep = 1;
+
+ ud->fbinfo->pseudo_palette = ud->pseudo_palette;
+ ud->fbinfo->flags = FBINFO_DEFAULT;
+ ud->fbinfo->var = ubicom32plio80_var;
+ ud->fbinfo->var.xres = xres;
+ ud->fbinfo->var.yres = yres;
+
+ /*
+ * We cannot pan in the X direction, so xres_virtual is xres
+ * We can pan in the Y direction, so yres_virtual is vram_size / ud->fbinfo->fix.line_length
+ */
+ ud->fbinfo->var.xres_virtual = xres;
+ ud->fbinfo->var.yres_virtual = (vram_size * 1024) / ud->fbinfo->fix.line_length;
+
+ /*
+ * Allocate a color map
+ */
+ rc = fb_alloc_cmap(&ud->fbinfo->cmap, PALETTE_ENTRIES_NO, 0);
+ if (rc) {
+ dev_err(dev, "Fail to allocate colormap (%d entries)\n",
+ PALETTE_ENTRIES_NO);
+ goto fail;
+ }
+ ud->cmap_alloc = true;
+
+ /*
+ * Register new frame buffer
+ */
+ rc = register_framebuffer(ud->fbinfo);
+ if (rc) {
+ dev_err(dev, "Could not register frame buffer\n");
+ goto fail;
+ }
+
+ /*
+ * request the PLIO IRQ
+ */
+ rc = request_irq(TX_FIFO_INT(PLIO_PORT), ubicom32plio80_isr, IRQF_DISABLED, "ubicom32plio80", ud);
+ if (rc) {
+ dev_err(dev, "Could not request IRQ\n");
+ goto fail;
+ }
+ ud->irq_req = 1;
+
+ /*
+ * Clear any garbage out of the TX FIFOs (idif_txfifo_flush)
+ *
+ * cast through ubicom32_io_port to make sure the compiler does a word write
+ */
+ ((struct ubicom32_io_port *)PLIO_NBR)->int_set = (1 << 18);
+
+ /*
+ * Start up the state machine
+ */
+ plio_init(&plio_fctl, &plio_config, (plio_sram_t *)ubicom32plio80_plio_fsm, sizeof(ubicom32plio80_plio_fsm));
+ PLIO_NBR->fctl0.pfsm_cmd = 0;
+
+ ubicom32plio80_update(ud, ud->fb_aligned);
+
+ /*
+ * Tell the log we are here
+ */
+ dev_info(dev, "fbaddr=%p align=%p, size=%uKB screen(%ux%u) virt(%ux%u)\n",
+ ud->fb, ud->fb_aligned, vram_size, ud->fbinfo->var.xres, ud->fbinfo->var.yres,
+ ud->fbinfo->var.xres_virtual, ud->fbinfo->var.yres_virtual);
+
+ /*
+ * Success
+ */
+ return 0;
+
+fail:
+ ubicom32plio80_release(dev);
+ return rc;
+}
+
+/*
+ * ubicom32plio80_platform_remove
+ */
+static int ubicom32plio80_platform_remove(struct platform_device *pdev)
+{
+ dev_info(&(pdev->dev), "Ubicom32 FB Driver Remove\n");
+ return ubicom32plio80_release(&pdev->dev);
+}
+
+static struct platform_driver ubicom32plio80_platform_driver = {
+ .probe = ubicom32plio80_platform_probe,
+ .remove = ubicom32plio80_platform_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+#ifndef MODULE
+/*
+ * ubicom32plio80_setup
+ * Process kernel boot options
+ */
+static int __init ubicom32plio80_setup(char *options)
+{
+ char *this_opt;
+
+ if (!options || !*options) {
+ return 0;
+ }
+
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!*this_opt) {
+ continue;
+ }
+
+ if (!strncmp(this_opt, "vram_size=", 10)) {
+ vram_size = simple_strtoul(this_opt + 10, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "bgr=", 4)) {
+ bgr = simple_strtoul(this_opt + 4, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "xres=", 5)) {
+ xres = simple_strtoul(this_opt + 5, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "yres=", 5)) {
+ yres = simple_strtoul(this_opt + 5, NULL, 0);
+ continue;
+ }
+ }
+ return 0;
+}
+#endif /* MODULE */
+
+/*
+ * ubicom32plio80_init
+ */
+static int __devinit ubicom32plio80_init(void)
+{
+ int ret;
+
+#ifndef MODULE
+ /*
+ * Get kernel boot options (in 'video=ubicom32plio80:<options>')
+ */
+ char *option = NULL;
+
+ if (fb_get_options(DRIVER_NAME, &option)) {
+ return -ENODEV;
+ }
+ ubicom32plio80_setup(option);
+#endif /* MODULE */
+
+ ret = platform_driver_register(&ubicom32plio80_platform_driver);
+
+ if (!ret) {
+ ubicom32plio80_platform_device = platform_device_alloc(DRIVER_NAME, 0);
+
+ if (ubicom32plio80_platform_device)
+ ret = platform_device_add(ubicom32plio80_platform_device);
+ else
+ ret = -ENOMEM;
+
+ if (ret) {
+ platform_device_put(ubicom32plio80_platform_device);
+ platform_driver_unregister(&ubicom32plio80_platform_driver);
+ }
+ }
+
+ return ret;
+}
+module_init(ubicom32plio80_init);
+
+/*
+ * ubicom32plio80_exit
+ */
+static void __exit ubicom32plio80_exit(void)
+{
+ platform_device_unregister(ubicom32plio80_platform_device);
+ platform_driver_unregister(&ubicom32plio80_platform_driver);
+}
+module_exit(ubicom32plio80_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Patrick Tjin <@ubicom.com>");
+MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
diff --git a/target/linux/ubicom32/files/drivers/video/ubicom32vfb.c b/target/linux/ubicom32/files/drivers/video/ubicom32vfb.c
new file mode 100644
index 0000000..8478273
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/video/ubicom32vfb.c
@@ -0,0 +1,603 @@
+/*
+ * drivers/video/ubicom32vfb.c
+ * Ubicom32 virtual frame buffer driver
+ *
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * This driver was based on skeletonfb.c, Skeleton for a frame buffer device by
+ * Geert Uytterhoeven.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/uaccess.h>
+
+#define DRIVER_NAME "ubicom32vfb"
+#define DRIVER_DESCRIPTION "Ubicom32 virtual frame buffer driver"
+
+#define PALETTE_ENTRIES_NO 16
+
+/*
+ * Option variables
+ *
+ * vram_size: VRAM size in kilobytes, subject to alignment
+ */
+static int vram_size = 0;
+module_param(vram_size, int, 0);
+MODULE_PARM_DESC(vram_size, "VRAM size, in kilobytes to allocate, should be at least the size of one screen, subject to alignment");
+
+static int xres = 320;
+module_param(xres, int, 0);
+MODULE_PARM_DESC(xres, "x (horizontal) resolution");
+
+static int yres = 240;
+module_param(yres, int, 0);
+MODULE_PARM_DESC(yres, "y (vertical) resolution");
+
+static int bgr = 0;
+module_param(bgr, int, 0);
+MODULE_PARM_DESC(bgr, "display is BGR (Blue is MSB)");
+
+#define BITS_PER_PIXEL 16
+
+/*
+ * Buffer alignment, must not be 0
+ */
+#define UBICOM32VFB_ALIGNMENT 4
+
+/*
+ * fb_fix_screeninfo defines the non-changeable properties of the VDC, depending on what mode it is in.
+ */
+static struct fb_fix_screeninfo ubicom32vfb_fix = {
+ .id = "Ubicom32",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .accel = FB_ACCEL_UBICOM32_VFB,
+};
+
+/*
+ * Filled in at probe time when we find out what the hardware supports
+ */
+static struct fb_var_screeninfo ubicom32vfb_var;
+
+/*
+ * Private data structure
+ */
+struct ubicom32vfb_drvdata {
+ struct fb_info *fbinfo;
+ bool cmap_alloc;
+
+ /*
+ * The address of the framebuffer in memory
+ */
+ void *fb;
+ void *fb_aligned;
+
+ /*
+ * Total size of vram including alignment allowance
+ */
+ u32 total_vram_size;
+
+ /*
+ * Fake palette of 16 colors
+ */
+ u32 pseudo_palette[PALETTE_ENTRIES_NO];
+};
+
+static struct platform_device *ubicom32vfb_platform_device;
+
+/*
+ * ubicom32vfb_pan_display
+ * Pans the display to a given location. Supports only y direction panning.
+ */
+static int ubicom32vfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
+{
+ struct ubicom32vfb_drvdata *ud = (struct ubicom32vfb_drvdata *)fbi->par;
+ void *new_addr;
+
+ /*
+ * Get the last y line that would be displayed. Since we don't support YWRAP,
+ * it must be less than our virtual y size.
+ */
+ u32 lasty = var->yoffset + var->yres;
+ if (lasty > fbi->var.yres_virtual) {
+ /*
+ * We would fall off the end of our frame buffer if we panned here.
+ */
+ return -EINVAL;
+ }
+
+ if (var->xoffset) {
+ /*
+ * We don't support panning in the x direction
+ */
+ return -EINVAL;
+ }
+
+ /*
+ * Everything looks sane, go ahead and pan
+ *
+ * We have to calculate a new address for the VDC to look at
+ */
+ new_addr = ud->fb_aligned + (var->yoffset * fbi->fix.line_length);
+
+ return 0;
+}
+
+/*
+ * ubicom32vfb_setcolreg
+ * Sets a color in our virtual palette
+ */
+static int ubicom32vfb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi)
+{
+ u32 *palette = fbi->pseudo_palette;
+
+ if (regno >= PALETTE_ENTRIES_NO) {
+ return -EINVAL;
+ }
+
+ /*
+ * We only use 8 bits from each color
+ */
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ /*
+ * Convert any grayscale values
+ */
+ if (fbi->var.grayscale) {
+ u16 gray = red + green + blue;
+ gray += (gray >> 2) + (gray >> 3) - (gray >> 7);
+ gray >>= 2;
+ if (gray > 255) {
+ gray = 255;
+ }
+ red = gray;
+ blue = gray;
+ green = gray;
+ }
+
+ palette[regno] = (red << fbi->var.red.offset) | (green << fbi->var.green.offset) |
+ (blue << fbi->var.blue.offset);
+
+ return 0;
+}
+
+/*
+ * ubicom32vfb_mmap
+ */
+static int ubicom32vfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct ubicom32vfb_drvdata *ud = (struct ubicom32vfb_drvdata *)info->par;
+
+ vma->vm_start = (unsigned long)(ud->fb_aligned);
+
+ vma->vm_end = vma->vm_start + info->fix.smem_len;
+
+ /* For those who don't understand how mmap works, go read
+ * Documentation/nommu-mmap.txt.
+ * For those that do, you will know that the VM_MAYSHARE flag
+ * must be set in the vma->vm_flags structure on noMMU
+ * Other flags can be set, and are documented in
+ * include/linux/mm.h
+ */
+
+ vma->vm_flags |= VM_MAYSHARE | VM_SHARED;
+
+ return 0;
+}
+
+/*
+ * ubicom32vfb_check_var
+ * Check the var, tweak it but don't change operational parameters.
+ */
+static int ubicom32vfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct ubicom32vfb_drvdata *ud = (struct ubicom32vfb_drvdata *)info->par;
+ u32 line_size = var->xres * (BITS_PER_PIXEL / 8);
+
+ /*
+ * See if we can handle this bpp
+ */
+ if (var->bits_per_pixel > BITS_PER_PIXEL) {
+ return -EINVAL;
+ }
+ var->bits_per_pixel = BITS_PER_PIXEL;
+
+ /*
+ * See if we have enough memory to handle this resolution
+ */
+ if ((line_size * var->yres * BITS_PER_PIXEL / 8) > ud->total_vram_size) {
+ return -EINVAL;
+ }
+
+ var->xres_virtual = var->xres;
+ var->yres_virtual = ud->total_vram_size / line_size;
+
+ var->red.length = 5;
+ var->green.length = 6;
+ var->green.offset = 5;
+ var->blue.length = 5;
+ var->transp.offset = var->transp.length = 0;
+
+ if (bgr) {
+ var->red.offset = 0;
+ var->blue.offset = 11;
+ } else {
+ var->red.offset = 11;
+ var->blue.offset = 0;
+ }
+
+ var->nonstd = 0;
+ var->height = -1;
+ var->width = -1;
+ var->vmode = FB_VMODE_NONINTERLACED;
+ var->sync = 0;
+
+ return 0;
+}
+
+/*
+ * ubicom32vfb_set_par
+ * Set the video mode according to info->var
+ */
+static int ubicom32vfb_set_par(struct fb_info *info)
+{
+ /*
+ * Anything changed?
+ */
+ if ((xres == info->var.xres) && (yres == info->var.yres)) {
+ return 0;
+ }
+
+ /*
+ * Implement changes
+ */
+ xres = info->var.xres;
+ yres = info->var.yres;
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ info->fix.xpanstep = 0;
+ info->fix.ypanstep = 1;
+ info->fix.line_length = xres * (BITS_PER_PIXEL / 8);
+
+ return 0;
+}
+
+/*
+ * ubicom32vfb_ops
+ * List of supported operations
+ */
+static struct fb_ops ubicom32vfb_ops =
+{
+ .owner = THIS_MODULE,
+ .fb_pan_display = ubicom32vfb_pan_display,
+ .fb_setcolreg = ubicom32vfb_setcolreg,
+ .fb_mmap = ubicom32vfb_mmap,
+ .fb_check_var = ubicom32vfb_check_var,
+ .fb_set_par = ubicom32vfb_set_par,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+/*
+ * ubicom32vfb_release
+ */
+static int ubicom32vfb_release(struct device *dev)
+{
+ struct ubicom32vfb_drvdata *ud = dev_get_drvdata(dev);
+
+ unregister_framebuffer(ud->fbinfo);
+
+ if (ud->cmap_alloc) {
+ fb_dealloc_cmap(&ud->fbinfo->cmap);
+ }
+
+ if (ud->fb) {
+ kfree(ud->fb);
+ }
+
+ framebuffer_release(ud->fbinfo);
+ dev_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+/*
+ * ubicom32vfb_platform_probe
+ */
+static int __init ubicom32vfb_platform_probe(struct platform_device *pdev)
+{
+ struct ubicom32vfb_drvdata *ud;
+ struct fb_info *fbinfo;
+ int rc;
+ size_t fbsize;
+ struct device *dev = &pdev->dev;
+ int offset;
+
+ /*
+ * This is the minimum VRAM size
+ */
+ fbsize = xres * yres * 2;
+ if (!vram_size) {
+ vram_size = (fbsize + 1023) / 1024;
+ } else {
+ if (fbsize > (vram_size * 1024)) {
+ dev_err(dev, "Not enough VRAM for display, need >= %u bytes\n", fbsize);
+ return -ENOMEM; // should be ebadparam?
+ }
+ }
+
+ /*
+ * Allocate the framebuffer instance + our private data
+ */
+ fbinfo = framebuffer_alloc(sizeof(struct ubicom32vfb_drvdata), &pdev->dev);
+ if (!fbinfo) {
+ dev_err(dev, "Not enough memory to allocate instance.\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Fill in our private data.
+ */
+ ud = (struct ubicom32vfb_drvdata *)fbinfo->par;
+ ud->fbinfo = fbinfo;
+ dev_set_drvdata(dev, ud);
+
+ /*
+ * Allocate and align the requested amount of VRAM
+ */
+ ud->total_vram_size = (vram_size * 1024) + UBICOM32VFB_ALIGNMENT;
+ ud->fb = kmalloc(ud->total_vram_size, GFP_KERNEL);
+ if (ud->fb == NULL) {
+ dev_err(dev, "Couldn't allocate VRAM\n");
+ rc = -ENOMEM;
+ goto fail;
+ }
+
+ offset = (u32_t)ud->fb & (UBICOM32VFB_ALIGNMENT - 1);
+ if (!offset) {
+ ud->fb_aligned = ud->fb;
+ } else {
+ offset = UBICOM32VFB_ALIGNMENT - offset;
+ ud->fb_aligned = ud->fb + offset;
+ }
+
+ /*
+ * Clear the entire frame buffer
+ */
+ memset(ud->fb_aligned, 0, vram_size * 1024);
+
+ /*
+ * Fill in the fb_var_screeninfo structure
+ */
+ memset(&ubicom32vfb_var, 0, sizeof(ubicom32vfb_var));
+ ubicom32vfb_var.bits_per_pixel = BITS_PER_PIXEL;
+ ubicom32vfb_var.red.length = 5;
+ ubicom32vfb_var.green.length = 6;
+ ubicom32vfb_var.green.offset = 5;
+ ubicom32vfb_var.blue.length = 5;
+ ubicom32vfb_var.activate = FB_ACTIVATE_NOW;
+
+ if (bgr) {
+ ubicom32vfb_var.red.offset = 0;
+ ubicom32vfb_var.blue.offset = 11;
+ } else {
+ ubicom32vfb_var.red.offset = 11;
+ ubicom32vfb_var.blue.offset = 0;
+ }
+
+ /*
+ * Fill in the fb_info structure
+ */
+ ud->fbinfo->device = dev;
+ ud->fbinfo->screen_base = (void *)ud->fb_aligned;
+ ud->fbinfo->fbops = &ubicom32vfb_ops;
+ ud->fbinfo->fix = ubicom32vfb_fix;
+ ud->fbinfo->fix.smem_start = (u32)ud->fb_aligned;
+ ud->fbinfo->fix.smem_len = vram_size * 1024;
+ ud->fbinfo->fix.line_length = xres * 2;
+ ud->fbinfo->fix.mmio_start = (u32)ud;
+ ud->fbinfo->fix.mmio_len = sizeof(struct ubicom32vfb_drvdata);
+
+ /*
+ * We support panning in the y direction only
+ */
+ ud->fbinfo->fix.xpanstep = 0;
+ ud->fbinfo->fix.ypanstep = 1;
+
+ ud->fbinfo->pseudo_palette = ud->pseudo_palette;
+ ud->fbinfo->flags = FBINFO_DEFAULT;
+ ud->fbinfo->var = ubicom32vfb_var;
+ ud->fbinfo->var.xres = xres;
+ ud->fbinfo->var.yres = yres;
+
+ /*
+ * We cannot pan in the X direction, so xres_virtual is xres
+ * We can pan in the Y direction, so yres_virtual is vram_size / ud->fbinfo->fix.line_length
+ */
+ ud->fbinfo->var.xres_virtual = xres;
+ ud->fbinfo->var.yres_virtual = (vram_size * 1024) / ud->fbinfo->fix.line_length;
+
+ /*
+ * Allocate a color map
+ */
+ rc = fb_alloc_cmap(&ud->fbinfo->cmap, PALETTE_ENTRIES_NO, 0);
+ if (rc) {
+ dev_err(dev, "Fail to allocate colormap (%d entries)\n",
+ PALETTE_ENTRIES_NO);
+ goto fail;
+ }
+ ud->cmap_alloc = true;
+
+ /*
+ * Register new frame buffer
+ */
+ rc = register_framebuffer(ud->fbinfo);
+ if (rc) {
+ dev_err(dev, "Could not register frame buffer\n");
+ goto fail;
+ }
+
+ /*
+ * Tell the log we are here
+ */
+ dev_info(dev, "fbaddr=%p align=%p, size=%uKB screen(%ux%u) virt(%ux%u)\n",
+ ud->fb, ud->fb_aligned, vram_size, ud->fbinfo->var.xres, ud->fbinfo->var.yres,
+ ud->fbinfo->var.xres_virtual, ud->fbinfo->var.yres_virtual);
+
+ /*
+ * Success
+ */
+ return 0;
+
+fail:
+ ubicom32vfb_release(dev);
+ return rc;
+}
+
+/*
+ * ubicom32vfb_platform_remove
+ */
+static int ubicom32vfb_platform_remove(struct platform_device *pdev)
+{
+ dev_info(&(pdev->dev), "Ubicom32 FB Driver Remove\n");
+ return ubicom32vfb_release(&pdev->dev);
+}
+
+static struct platform_driver ubicom32vfb_platform_driver = {
+ .probe = ubicom32vfb_platform_probe,
+ .remove = ubicom32vfb_platform_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+#ifndef MODULE
+/*
+ * ubicom32vfb_setup
+ * Process kernel boot options
+ */
+static int __init ubicom32vfb_setup(char *options)
+{
+ char *this_opt;
+
+ if (!options || !*options) {
+ return 0;
+ }
+
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!*this_opt) {
+ continue;
+ }
+
+ if (!strncmp(this_opt, "vram_size=", 10)) {
+ vram_size = simple_strtoul(this_opt + 10, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "bgr=", 4)) {
+ bgr = simple_strtoul(this_opt + 4, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "xres=", 5)) {
+ xres = simple_strtoul(this_opt + 5, NULL, 0);
+ continue;
+ }
+
+ if (!strncmp(this_opt, "yres=", 5)) {
+ yres = simple_strtoul(this_opt + 5, NULL, 0);
+ continue;
+ }
+ }
+ return 0;
+}
+#endif /* MODULE */
+
+/*
+ * ubicom32vfb_init
+ */
+static int __devinit ubicom32vfb_init(void)
+{
+ int ret;
+
+#ifndef MODULE
+ /*
+ * Get kernel boot options (in 'video=ubicom32vfb:<options>')
+ */
+ char *option = NULL;
+
+ if (fb_get_options(DRIVER_NAME, &option)) {
+ return -ENODEV;
+ }
+ ubicom32vfb_setup(option);
+#endif /* MODULE */
+
+ ret = platform_driver_register(&ubicom32vfb_platform_driver);
+
+#ifdef CONFIG_FB_UBICOM32_VIRTUAL_NOAUTO
+ return ret;
+#else
+ if (!ret) {
+ ubicom32vfb_platform_device = platform_device_alloc(DRIVER_NAME, 0);
+
+ if (ubicom32vfb_platform_device)
+ ret = platform_device_add(ubicom32vfb_platform_device);
+ else
+ ret = -ENOMEM;
+
+ if (ret) {
+ platform_device_put(ubicom32vfb_platform_device);
+ platform_driver_unregister(&ubicom32vfb_platform_driver);
+ }
+ }
+
+ return ret;
+#endif
+}
+module_init(ubicom32vfb_init);
+
+/*
+ * ubicom32vfb_exit
+ */
+static void __exit ubicom32vfb_exit(void)
+{
+ platform_device_unregister(ubicom32vfb_platform_device);
+ platform_driver_unregister(&ubicom32vfb_platform_driver);
+}
+module_exit(ubicom32vfb_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Patrick Tjin <@ubicom.com>");
+MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
diff --git a/target/linux/ubicom32/files/drivers/watchdog/ubi32_wdt.c b/target/linux/ubicom32/files/drivers/watchdog/ubi32_wdt.c
new file mode 100644
index 0000000..2c5b921
--- /dev/null
+++ b/target/linux/ubicom32/files/drivers/watchdog/ubi32_wdt.c
@@ -0,0 +1,630 @@
+/*
+ * drivers/watchdog/ubi32_wdt.c
+ * Ubicom32 Watchdog Driver
+ *
+ * Originally based on softdog.c
+ * Copyright 2006-2007 Analog Devices Inc.
+ * Copyright 2006-2007 Michele d'Amico
+ * Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>
+ * (C) Copyright 2009, Ubicom, Inc.
+ *
+ * This file is part of the Ubicom32 Linux Kernel Port.
+ *
+ * The Ubicom32 Linux Kernel Port is free software: you can redistribute
+ * it and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * The Ubicom32 Linux Kernel Port is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the Ubicom32 Linux Kernel Port. If not,
+ * see <http://www.gnu.org/licenses/>.
+ *
+ * Ubicom32 implementation derived from (with many thanks):
+ * arch/m68knommu
+ * arch/blackfin
+ * arch/parisc
+ */
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/timer.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/fs.h>
+#include <linux/notifier.h>
+#include <linux/reboot.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/uaccess.h>
+#include <asm/ip5000.h>
+
+#define WATCHDOG_NAME "ubi32-wdt"
+#define PFX WATCHDOG_NAME ": "
+
+#define OSC1_FREQ 12000000
+#define WATCHDOG_SEC_TO_CYC(x) (OSC1_FREQ * (x))
+#define WATCHDOG_MAX_SEC (0xffffffff / OSC1_FREQ)
+
+#define MIN_PROCESSOR_ADDRESS 0x03000000
+
+static DEFINE_SPINLOCK(ubi32_wdt_spinlock);
+
+#define WATCHDOG_TIMEOUT 20
+
+#if defined(CONFIG_WATCHDOG_NOWAYOUT)
+#define WATCHDOG_NOWAYOUT 1
+#else
+#define WATCHDOG_NOWAYOUT 0
+#endif
+
+static unsigned int timeout = WATCHDOG_TIMEOUT;
+static int nowayout = WATCHDOG_NOWAYOUT;
+static struct watchdog_info ubi32_wdt_info;
+static unsigned long open_check;
+static char expect_close;
+
+#if !defined(CONFIG_SMP)
+#define UBI32_WDT_LOCK(lock, flags) local_irq_save(flags)
+#define UBI32_WDT_UNLOCK(lock, flags) local_irq_restore(flags)
+#define UBI32_WDT_LOCK_CHECK()
+#else
+#define UBI32_WDT_LOCK(lock, flags) spin_lock_irqsave((lock), (flags));
+#define UBI32_WDT_UNLOCK(lock, flags) spin_unlock_irqrestore((lock), (flags));
+#define UBI32_WDT_LOCK_CHECK() BUG_ON(!spin_is_locked(&ubi32_wdt_spinlock));
+#endif
+
+/*
+ * ubi32_wdt_remaining()
+ * Return the approximate number of seconds remaining
+ */
+static int ubi32_wdt_remaining(void)
+{
+ int compare;
+ int curr;
+
+ UBI32_WDT_LOCK_CHECK();
+
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, TIMER_TKEYVAL);
+ compare = ubicom32_read_reg(&UBICOM32_IO_TIMER->wdcom);
+ curr = ubicom32_read_reg(&UBICOM32_IO_TIMER->mptval);
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, 0);
+ return (compare - curr) / OSC1_FREQ;
+
+}
+
+/*
+ * ubi32_wdt_keepalive()
+ * Keep the Userspace Watchdog Alive
+ *
+ * The Userspace watchdog got a KeepAlive: schedule the next timeout.
+ */
+static int ubi32_wdt_keepalive(void)
+{
+ UBI32_WDT_LOCK_CHECK();
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, TIMER_TKEYVAL);
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->wdcom,
+ ubicom32_read_reg(&UBICOM32_IO_TIMER->mptval)
+ + WATCHDOG_SEC_TO_CYC(timeout));
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, 0);
+ return 0;
+}
+
+/*
+ * ubi32_wdt_stop()
+ * Stop the on-chip Watchdog
+ */
+static int ubi32_wdt_stop(void)
+{
+ UBI32_WDT_LOCK_CHECK();
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, TIMER_TKEYVAL);
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->wdcfg, TIMER_WATCHDOG_DISABLE);
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, 0);
+ return 0;
+}
+
+/*
+ * ubi32_wdt_start()
+ * Start the on-chip Watchdog
+ */
+static int ubi32_wdt_start(void)
+{
+ UBI32_WDT_LOCK_CHECK();
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, TIMER_TKEYVAL);
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->wdcom,
+ ubicom32_read_reg(&UBICOM32_IO_TIMER->mptval)
+ + WATCHDOG_SEC_TO_CYC(timeout));
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->wdcfg, ~TIMER_WATCHDOG_DISABLE);
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, 0);
+ return 0;
+}
+
+/*
+ * ubi32_wdt_running()
+ * Return true if the watchdog is configured
+ */
+static int ubi32_wdt_running(void)
+{
+ int enabled;
+
+ UBI32_WDT_LOCK_CHECK();
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, TIMER_TKEYVAL);
+ enabled = ubicom32_read_reg(&UBICOM32_IO_TIMER->wdcfg) == ~TIMER_WATCHDOG_DISABLE;
+ ubicom32_write_reg(&UBICOM32_IO_TIMER->tkey, 0);
+ return enabled;
+}
+
+/*
+ * ubi32_wdt_set_timeout()
+ * Set the Userspace Watchdog timeout
+ *
+ * - @t: new timeout value (in seconds)
+ */
+static int ubi32_wdt_set_timeout(unsigned long t)
+{
+ UBI32_WDT_LOCK_CHECK();
+
+ if (t > WATCHDOG_MAX_SEC) {
+ printk(KERN_WARNING PFX "request to large: %ld [1-%d] sec)\n", t, WATCHDOG_MAX_SEC);
+ return -EINVAL;
+ }
+
+ /*
+ * If we are running, then reset the time value so
+ * that the new value has an immediate effect.
+ */
+ timeout = t;
+ if (ubi32_wdt_running()) {
+ ubi32_wdt_keepalive();
+ }
+ return 0;
+}
+
+/*
+ * ubi32_wdt_open()
+ * Open the Device
+ */
+static int ubi32_wdt_open(struct inode *inode, struct file *file)
+{
+ unsigned long flags;
+
+ if (test_and_set_bit(0, &open_check))
+ return -EBUSY;
+
+ if (nowayout)
+ __module_get(THIS_MODULE);
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_start();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+
+ return nonseekable_open(inode, file);
+}
+
+/*
+ * ubi32_wdt_close()
+ * Close the Device
+ */
+static int ubi32_wdt_release(struct inode *inode, struct file *file)
+{
+ unsigned long flags;
+
+ /*
+ * If we don't expect a close, then the watchdog continues
+ * even though the device is closed. The caller will have
+ * a full timeout value to reopen the device and continue
+ * stroking it.
+ */
+ if (expect_close != 42) {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_keepalive();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ } else {
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_stop();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ }
+
+ expect_close = 0;
+ clear_bit(0, &open_check);
+ return 0;
+}
+
+/*
+ * ubi32_wdt_write()
+ * Write to Device
+ *
+ * If the user writes nothing, nothing happens.
+ * If the user writes a V, then we expect a close and allow a release.
+ * If the user writes anything else, it is ignored.
+ */
+static ssize_t ubi32_wdt_write(struct file *file, const char __user *data,
+ size_t len, loff_t *ppos)
+{
+ size_t i;
+ unsigned long flags;
+
+ /*
+ * Every write resets the expect_close. The last write
+ * must be a V to allow shutdown on close.
+ */
+ expect_close = 0;
+
+ /*
+ * Empty writes still ping.
+ */
+ if (!len) {
+ goto ping;
+ }
+
+ /*
+ * If nowayout is set, it does not matter if the caller
+ * is trying to send the magic 'V' we will not allow a
+ * close to stop us.
+ */
+ if (nowayout) {
+ goto ping;
+ }
+
+ /*
+ * See if the program wrote a 'V' and if so disable
+ * the watchdog on release.
+ */
+ for (i = 0; i < len; i++) {
+ char c;
+ if (get_user(c, data + i)) {
+ return -EFAULT;
+ }
+
+ if (c == 'V') {
+ expect_close = 42;
+ }
+ }
+
+ping:
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_keepalive();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ return len;
+}
+
+/*
+ * ubi32_wdt_ioctl()
+ * Query the watchdog device.
+ *
+ * Query basic information from the device or ping it, as outlined by the
+ * watchdog API.
+ */
+static long ubi32_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ int __user *p = argp;
+
+ switch (cmd) {
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &ubi32_wdt_info, sizeof(ubi32_wdt_info))) {
+ return -EFAULT;
+ }
+ return 0;
+
+ case WDIOC_GETSTATUS: {
+ unsigned long flags;
+ int running;
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ running = ubi32_wdt_running();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ return running;
+ }
+
+ case WDIOC_GETBOOTSTATUS:
+ return ubicom32_get_reset_reason();
+
+ case WDIOC_SETOPTIONS: {
+ unsigned long flags;
+ int options, ret = -EINVAL;
+
+ /*
+ * The sample application does not pass a pointer
+ * but directly passes a value of 1 or 2; however
+ * all of the implementations (and thus probably
+ * the real applications) pass a pointer to a value.
+ *
+ * It should be noted that WDIOC_SETOPTIONS is defined as
+ * _IOR(WATCHDOG_IOCTL_BASE, 4, int), which means
+ * that it should be an int and NOT a pointer.
+ *
+ * TODO: Examine this code for future chips.
+ * TODO: Report the sample code defect.
+ */
+ if ((int)p < MIN_PROCESSOR_ADDRESS) {
+ options = (int)p;
+ } else {
+ if (get_user(options, p))
+ return -EFAULT;
+ }
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ if (options & WDIOS_DISABLECARD) {
+ ubi32_wdt_stop();
+ ret = 0;
+ }
+ if (options & WDIOS_ENABLECARD) {
+ ubi32_wdt_start();
+ ret = 0;
+ }
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ return ret;
+ }
+
+ case WDIOC_KEEPALIVE: {
+ unsigned long flags;
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_keepalive();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ return 0;
+ }
+
+ case WDIOC_SETTIMEOUT: {
+ int new_timeout;
+ unsigned long flags;
+ int ret = 0;
+
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ret = ubi32_wdt_set_timeout(new_timeout);
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ return ret;
+
+ }
+
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
+
+ case WDIOC_GETTIMELEFT: {
+ unsigned long flags;
+ int remaining = 0;
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ remaining = ubi32_wdt_remaining();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ return put_user(remaining, p);
+ }
+
+ default:
+ return -ENOTTY;
+ }
+}
+
+/*
+ * ubi32_wdt_notify_sys()
+ * Notification callback function for system events.
+ *
+ * Turn off the watchdog during a SYS_DOWN or SYS_HALT.
+ */
+static int ubi32_wdt_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
+{
+ if (code == SYS_DOWN || code == SYS_HALT) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_stop();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ }
+
+ return NOTIFY_DONE;
+}
+
+#ifdef CONFIG_PM
+static int state_before_suspend;
+
+/*
+ * ubi32_wdt_suspend()
+ * suspend the watchdog
+ *
+ * Remember if the watchdog was running and stop it.
+ */
+static int ubi32_wdt_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ state_before_suspend = ubi32_wdt_running();
+ ubi32_wdt_stop();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+
+ return 0;
+}
+
+/*
+ * ubi32_wdt_resume()
+ * Resume the watchdog
+ *
+ * If the watchdog was running, turn it back on.
+ */
+static int ubi32_wdt_resume(struct platform_device *pdev)
+{
+ if (state_before_suspend) {
+ unsigned long flags;
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ubi32_wdt_set_timeout(timeout);
+ ubi32_wdt_start();
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ }
+
+ return 0;
+}
+#else
+# define ubi32_wdt_suspend NULL
+# define ubi32_wdt_resume NULL
+#endif
+
+static const struct file_operations ubi32_wdt_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = ubi32_wdt_write,
+ .unlocked_ioctl = ubi32_wdt_ioctl,
+ .open = ubi32_wdt_open,
+ .release = ubi32_wdt_release,
+};
+
+static struct miscdevice ubi32_wdt_miscdev = {
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &ubi32_wdt_fops,
+};
+
+static struct watchdog_info ubi32_wdt_info = {
+ .identity = "Ubicom32 Watchdog",
+ .options = WDIOF_SETTIMEOUT |
+ WDIOF_KEEPALIVEPING |
+ WDIOF_MAGICCLOSE,
+};
+
+static struct notifier_block ubi32_wdt_notifier = {
+ .notifier_call = ubi32_wdt_notify_sys,
+};
+
+/*
+ * ubi32_wdt_probe()
+ * Probe/register the watchdog module
+ *
+ * Registers the misc device and notifier handler. Actual device
+ * initialization is handled by ubi32_wdt_open().
+ */
+static int __devinit ubi32_wdt_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = register_reboot_notifier(&ubi32_wdt_notifier);
+ if (ret) {
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
+ return ret;
+ }
+
+ ret = misc_register(&ubi32_wdt_miscdev);
+ if (ret) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
+ unregister_reboot_notifier(&ubi32_wdt_notifier);
+ return ret;
+ }
+
+ printk(KERN_INFO PFX "initialized: timeout=%d sec (nowayout=%d)\n",
+ timeout, nowayout);
+
+ return 0;
+}
+
+/*
+ * ubi32_wdt_remove()
+ * Uninstall the module
+ *
+ * Unregisters the misc device and notifier handler. Actual device
+ * deinitialization is handled by ubi32_wdt_close().
+ */
+static int __devexit ubi32_wdt_remove(struct platform_device *pdev)
+{
+ misc_deregister(&ubi32_wdt_miscdev);
+ unregister_reboot_notifier(&ubi32_wdt_notifier);
+ return 0;
+}
+
+static struct platform_device *ubi32_wdt_device;
+
+static struct platform_driver ubi32_wdt_driver = {
+ .probe = ubi32_wdt_probe,
+ .remove = __devexit_p(ubi32_wdt_remove),
+ .suspend = ubi32_wdt_suspend,
+ .resume = ubi32_wdt_resume,
+ .driver = {
+ .name = WATCHDOG_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+/*
+ * ubi32_wdt_init()
+ * Initialize the watchdog.
+ *
+ * Checks the module params and registers the platform device & driver.
+ * Real work is in the platform probe function.
+ */
+static int __init ubi32_wdt_init(void)
+{
+ unsigned long flags;
+ int ret;
+
+ /*
+ * Check that the timeout value is within range
+ */
+ spin_lock_irqsave(&ubi32_wdt_spinlock, flags);
+ ret = ubi32_wdt_set_timeout(timeout);
+ spin_unlock_irqrestore(&ubi32_wdt_spinlock, flags);
+ if (ret) {
+ return ret;
+ }
+
+ /*
+ * Since this is an on-chip device and needs no board-specific
+ * resources, we'll handle all the platform device stuff here.
+ */
+ ret = platform_driver_register(&ubi32_wdt_driver);
+ if (ret) {
+ printk(KERN_ERR PFX "unable to register driver\n");
+ return ret;
+ }
+
+ ubi32_wdt_device = platform_device_register_simple(WATCHDOG_NAME, -1, NULL, 0);
+ if (IS_ERR(ubi32_wdt_device)) {
+ printk(KERN_ERR PFX "unable to register device\n");
+ platform_driver_unregister(&ubi32_wdt_driver);
+ return PTR_ERR(ubi32_wdt_device);
+ }
+
+ return 0;
+}
+
+/*
+ * ubi32_wdt_exit()
+ * Deinitialize module
+ *
+ * Back out the platform device & driver steps. Real work is in the
+ * platform remove function.
+ */
+static void __exit ubi32_wdt_exit(void)
+{
+ platform_device_unregister(ubi32_wdt_device);
+ platform_driver_unregister(&ubi32_wdt_driver);
+}
+
+module_init(ubi32_wdt_init);
+module_exit(ubi32_wdt_exit);
+
+MODULE_AUTHOR("Sol Kavy<sol@ubicom.com>");
+MODULE_DESCRIPTION("Ubicom32 Watchdog Device Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+
+module_param(timeout, uint, 0);
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default="
+ __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");