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-rwxr-xr-xtarget/linux/s3c24xx/patches-2.6.26/1008-gta01-jbt6k74.patch.patch748
1 files changed, 0 insertions, 748 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/1008-gta01-jbt6k74.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1008-gta01-jbt6k74.patch.patch
deleted file mode 100755
index f5ea55e..0000000
--- a/target/linux/s3c24xx/patches-2.6.26/1008-gta01-jbt6k74.patch.patch
+++ /dev/null
@@ -1,748 +0,0 @@
-From 5b0814282e6878f7f2f07b98cc8b0128e7ea423d Mon Sep 17 00:00:00 2001
-From: mokopatches <mokopatches@openmoko.org>
-Date: Wed, 16 Jul 2008 14:44:48 +0100
-Subject: [PATCH] gta01-jbt6k74.patch
- This driver adds support for the SPI-based control interface of the LCM (LCD
- Panel) found on the FIC GTA01 hardware.
-
-The specific panel in this hardware is a TPO TD028TTEC1, but the driver should
-be able to drive any other diplay based on the JBT6K74-AS controller ASIC.
-
-Signed-off-by: Harald Welte <laforge@openmoko.org>
----
- arch/arm/mach-s3c2410/Kconfig | 1 +
- drivers/video/display/Kconfig | 11 +
- drivers/video/display/Makefile | 1 +
- drivers/video/display/jbt6k74.c | 678 +++++++++++++++++++++++++++++++++++++++
- 4 files changed, 691 insertions(+), 0 deletions(-)
- create mode 100644 drivers/video/display/jbt6k74.c
-
-diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
-index 7e3a1a2..58519e6 100644
---- a/arch/arm/mach-s3c2410/Kconfig
-+++ b/arch/arm/mach-s3c2410/Kconfig
-@@ -114,6 +114,7 @@ config MACH_VR1000
- config MACH_QT2410
- bool "QT2410"
- select CPU_S3C2410
-+ select DISPLAY_JBT6K74
- help
- Say Y here if you are using the Armzone QT2410
-
-diff --git a/drivers/video/display/Kconfig b/drivers/video/display/Kconfig
-index f99af93..f0da483 100644
---- a/drivers/video/display/Kconfig
-+++ b/drivers/video/display/Kconfig
-@@ -21,4 +21,15 @@ config DISPLAY_SUPPORT
- comment "Display hardware drivers"
- depends on DISPLAY_SUPPORT
-
-+config DISPLAY_JBT6K74
-+ tristate "TPO JBT6K74-AS TFT display ASIC control interface"
-+ depends on SPI_MASTER && SYSFS
-+ help
-+ SPI driver for the control interface of TFT panels containing
-+ the TPO JBT6K74-AS controller ASIC, such as the TPO TD028TTEC1
-+ TFT diplay module used in the FIC/OpenMoko Neo1973 GSM phones.
-+
-+ The control interface is required for display operation, as it
-+ controls power management, display timing and gamma calibration.
-+
- endmenu
-diff --git a/drivers/video/display/Makefile b/drivers/video/display/Makefile
-index c0ea832..011b69d 100644
---- a/drivers/video/display/Makefile
-+++ b/drivers/video/display/Makefile
-@@ -3,4 +3,5 @@
- display-objs := display-sysfs.o
-
- obj-$(CONFIG_DISPLAY_SUPPORT) += display.o
-+obj-$(CONFIG_DISPLAY_JBT6K74) += jbt6k74.o
-
-diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
-new file mode 100644
-index 0000000..d021d7e
---- /dev/null
-+++ b/drivers/video/display/jbt6k74.c
-@@ -0,0 +1,678 @@
-+/* Linux kernel driver for the tpo JBT6K74-AS LCM ASIC
-+ *
-+ * Copyright (C) 2006-2007 by OpenMoko, Inc.
-+ * Author: Harald Welte <laforge@openmoko.org>,
-+ * Stefan Schmidt <stefan@openmoko.org>
-+ * All rights reserved.
-+ *
-+ * This program 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 program 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 this program; if not, write to the Free Software
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-+ * MA 02111-1307 USA
-+ *
-+ */
-+#include <linux/kernel.h>
-+#include <linux/types.h>
-+#include <linux/module.h>
-+#include <linux/device.h>
-+#include <linux/platform_device.h>
-+#include <linux/delay.h>
-+
-+#include <linux/spi/spi.h>
-+
-+enum jbt_register {
-+ JBT_REG_SLEEP_IN = 0x10,
-+ JBT_REG_SLEEP_OUT = 0x11,
-+
-+ JBT_REG_DISPLAY_OFF = 0x28,
-+ JBT_REG_DISPLAY_ON = 0x29,
-+
-+ JBT_REG_RGB_FORMAT = 0x3a,
-+ JBT_REG_QUAD_RATE = 0x3b,
-+
-+ JBT_REG_POWER_ON_OFF = 0xb0,
-+ JBT_REG_BOOSTER_OP = 0xb1,
-+ JBT_REG_BOOSTER_MODE = 0xb2,
-+ JBT_REG_BOOSTER_FREQ = 0xb3,
-+ JBT_REG_OPAMP_SYSCLK = 0xb4,
-+ JBT_REG_VSC_VOLTAGE = 0xb5,
-+ JBT_REG_VCOM_VOLTAGE = 0xb6,
-+ JBT_REG_EXT_DISPL = 0xb7,
-+ JBT_REG_OUTPUT_CONTROL = 0xb8,
-+ JBT_REG_DCCLK_DCEV = 0xb9,
-+ JBT_REG_DISPLAY_MODE1 = 0xba,
-+ JBT_REG_DISPLAY_MODE2 = 0xbb,
-+ JBT_REG_DISPLAY_MODE = 0xbc,
-+ JBT_REG_ASW_SLEW = 0xbd,
-+ JBT_REG_DUMMY_DISPLAY = 0xbe,
-+ JBT_REG_DRIVE_SYSTEM = 0xbf,
-+
-+ JBT_REG_SLEEP_OUT_FR_A = 0xc0,
-+ JBT_REG_SLEEP_OUT_FR_B = 0xc1,
-+ JBT_REG_SLEEP_OUT_FR_C = 0xc2,
-+ JBT_REG_SLEEP_IN_LCCNT_D = 0xc3,
-+ JBT_REG_SLEEP_IN_LCCNT_E = 0xc4,
-+ JBT_REG_SLEEP_IN_LCCNT_F = 0xc5,
-+ JBT_REG_SLEEP_IN_LCCNT_G = 0xc6,
-+
-+ JBT_REG_GAMMA1_FINE_1 = 0xc7,
-+ JBT_REG_GAMMA1_FINE_2 = 0xc8,
-+ JBT_REG_GAMMA1_INCLINATION = 0xc9,
-+ JBT_REG_GAMMA1_BLUE_OFFSET = 0xca,
-+
-+ /* VGA */
-+ JBT_REG_BLANK_CONTROL = 0xcf,
-+ JBT_REG_BLANK_TH_TV = 0xd0,
-+ JBT_REG_CKV_ON_OFF = 0xd1,
-+ JBT_REG_CKV_1_2 = 0xd2,
-+ JBT_REG_OEV_TIMING = 0xd3,
-+ JBT_REG_ASW_TIMING_1 = 0xd4,
-+ JBT_REG_ASW_TIMING_2 = 0xd5,
-+
-+ /* QVGA */
-+ JBT_REG_BLANK_CONTROL_QVGA = 0xd6,
-+ JBT_REG_BLANK_TH_TV_QVGA = 0xd7,
-+ JBT_REG_CKV_ON_OFF_QVGA = 0xd8,
-+ JBT_REG_CKV_1_2_QVGA = 0xd9,
-+ JBT_REG_OEV_TIMING_QVGA = 0xde,
-+ JBT_REG_ASW_TIMING_1_QVGA = 0xdf,
-+ JBT_REG_ASW_TIMING_2_QVGA = 0xe0,
-+
-+
-+ JBT_REG_HCLOCK_VGA = 0xec,
-+ JBT_REG_HCLOCK_QVGA = 0xed,
-+
-+};
-+
-+enum jbt_state {
-+ JBT_STATE_DEEP_STANDBY,
-+ JBT_STATE_SLEEP,
-+ JBT_STATE_NORMAL,
-+ JBT_STATE_QVGA_NORMAL,
-+};
-+
-+static const char *jbt_state_names[] = {
-+ [JBT_STATE_DEEP_STANDBY] = "deep-standby",
-+ [JBT_STATE_SLEEP] = "sleep",
-+ [JBT_STATE_NORMAL] = "normal",
-+ [JBT_STATE_QVGA_NORMAL] = "qvga-normal",
-+};
-+
-+struct jbt_info {
-+ enum jbt_state state, last_state;
-+ struct spi_device *spi_dev;
-+ struct mutex lock; /* protects tx_buf and reg_cache */
-+ u16 tx_buf[8];
-+ u16 reg_cache[0xEE];
-+};
-+
-+#define JBT_COMMAND 0x000
-+#define JBT_DATA 0x100
-+
-+static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
-+{
-+ int rc;
-+
-+ mutex_lock(&jbt->lock);
-+
-+ jbt->tx_buf[0] = JBT_COMMAND | reg;
-+ rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf,
-+ 1*sizeof(u16));
-+ if (rc == 0)
-+ jbt->reg_cache[reg] = 0;
-+
-+ mutex_unlock(&jbt->lock);
-+
-+ return rc;
-+}
-+
-+
-+static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data)
-+{
-+ int rc;
-+
-+ mutex_lock(&jbt->lock);
-+
-+ jbt->tx_buf[0] = JBT_COMMAND | reg;
-+ jbt->tx_buf[1] = JBT_DATA | data;
-+ rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf,
-+ 2*sizeof(u16));
-+ if (rc == 0)
-+ jbt->reg_cache[reg] = data;
-+
-+ mutex_unlock(&jbt->lock);
-+
-+ return rc;
-+}
-+
-+static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data)
-+{
-+ int rc;
-+
-+ mutex_lock(&jbt->lock);
-+
-+ jbt->tx_buf[0] = JBT_COMMAND | reg;
-+ jbt->tx_buf[1] = JBT_DATA | (data >> 8);
-+ jbt->tx_buf[2] = JBT_DATA | (data & 0xff);
-+
-+ rc = spi_write(jbt->spi_dev, (u8 *)jbt->tx_buf,
-+ 3*sizeof(u16));
-+ if (rc == 0)
-+ jbt->reg_cache[reg] = data;
-+
-+ mutex_unlock(&jbt->lock);
-+
-+ return rc;
-+}
-+
-+static int jbt_init_regs(struct jbt_info *jbt, int qvga)
-+{
-+ int rc;
-+
-+ dev_dbg(&jbt->spi_dev->dev, "entering %cVGA mode\n", qvga ? 'Q' : ' ');
-+
-+ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE1, 0x01);
-+ rc |= jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE2, 0x00);
-+ rc |= jbt_reg_write(jbt, JBT_REG_RGB_FORMAT, 0x60);
-+ rc |= jbt_reg_write(jbt, JBT_REG_DRIVE_SYSTEM, 0x10);
-+ rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_OP, 0x56);
-+ rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_MODE, 0x33);
-+ rc |= jbt_reg_write(jbt, JBT_REG_BOOSTER_FREQ, 0x11);
-+ rc |= jbt_reg_write(jbt, JBT_REG_OPAMP_SYSCLK, 0x02);
-+ rc |= jbt_reg_write(jbt, JBT_REG_VSC_VOLTAGE, 0x2b);
-+ rc |= jbt_reg_write(jbt, JBT_REG_VCOM_VOLTAGE, 0x40);
-+ rc |= jbt_reg_write(jbt, JBT_REG_EXT_DISPL, 0x03);
-+ rc |= jbt_reg_write(jbt, JBT_REG_DCCLK_DCEV, 0x04);
-+ /*
-+ * default of 0x02 in JBT_REG_ASW_SLEW responsible for 72Hz requirement
-+ * to avoid red / blue flicker
-+ */
-+ rc |= jbt_reg_write(jbt, JBT_REG_ASW_SLEW, 0x04);
-+ rc |= jbt_reg_write(jbt, JBT_REG_DUMMY_DISPLAY, 0x00);
-+
-+ rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_A, 0x11);
-+ rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_B, 0x11);
-+ rc |= jbt_reg_write(jbt, JBT_REG_SLEEP_OUT_FR_C, 0x11);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_D, 0x2040);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_E, 0x60c0);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_F, 0x1020);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_SLEEP_IN_LCCNT_G, 0x60c0);
-+
-+ rc |= jbt_reg_write16(jbt, JBT_REG_GAMMA1_FINE_1, 0x5533);
-+ rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_FINE_2, 0x00);
-+ rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_INCLINATION, 0x00);
-+ rc |= jbt_reg_write(jbt, JBT_REG_GAMMA1_BLUE_OFFSET, 0x00);
-+
-+ if (!qvga) {
-+ rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_VGA, 0x1f0);
-+ rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL, 0x02);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV, 0x0804);
-+
-+ rc |= jbt_reg_write(jbt, JBT_REG_CKV_ON_OFF, 0x01);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_CKV_1_2, 0x0000);
-+
-+ rc |= jbt_reg_write16(jbt, JBT_REG_OEV_TIMING, 0x0d0e);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_ASW_TIMING_1, 0x11a4);
-+ rc |= jbt_reg_write(jbt, JBT_REG_ASW_TIMING_2, 0x0e);
-+ } else {
-+ rc |= jbt_reg_write16(jbt, JBT_REG_HCLOCK_QVGA, 0x00ff);
-+ rc |= jbt_reg_write(jbt, JBT_REG_BLANK_CONTROL_QVGA, 0x02);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_BLANK_TH_TV_QVGA, 0x0804);
-+
-+ rc |= jbt_reg_write(jbt, JBT_REG_CKV_ON_OFF_QVGA, 0x01);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_CKV_1_2_QVGA, 0x0008);
-+
-+ rc |= jbt_reg_write16(jbt, JBT_REG_OEV_TIMING_QVGA, 0x050a);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_ASW_TIMING_1_QVGA, 0x0a19);
-+ rc |= jbt_reg_write(jbt, JBT_REG_ASW_TIMING_2_QVGA, 0x0a);
-+ }
-+
-+ return rc ? -EIO : 0;
-+}
-+
-+static int standby_to_sleep(struct jbt_info *jbt)
-+{
-+ int rc;
-+
-+ /* three times command zero */
-+ rc = jbt_reg_write_nodata(jbt, 0x00);
-+ mdelay(1);
-+ rc |= jbt_reg_write_nodata(jbt, 0x00);
-+ mdelay(1);
-+ rc |= jbt_reg_write_nodata(jbt, 0x00);
-+ mdelay(1);
-+
-+ /* deep standby out */
-+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x17);
-+
-+ return rc ? -EIO : 0;
-+}
-+
-+static int sleep_to_normal(struct jbt_info *jbt)
-+{
-+ int rc;
-+
-+ /* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */
-+ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x80);
-+
-+ /* Quad mode off */
-+ rc |= jbt_reg_write(jbt, JBT_REG_QUAD_RATE, 0x00);
-+
-+ /* AVDD on, XVDD on */
-+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x16);
-+
-+ /* Output control */
-+ rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0xfff9);
-+
-+ /* Sleep mode off */
-+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_OUT);
-+
-+ /* initialize register set */
-+ rc |= jbt_init_regs(jbt, 0);
-+
-+ return rc ? -EIO : 0;
-+}
-+
-+static int sleep_to_qvga_normal(struct jbt_info *jbt)
-+{
-+ int rc;
-+
-+ /* RGB I/F on, RAM wirte off, QVGA through, SIGCON enable */
-+ rc = jbt_reg_write(jbt, JBT_REG_DISPLAY_MODE, 0x81);
-+
-+ /* Quad mode on */
-+ rc |= jbt_reg_write(jbt, JBT_REG_QUAD_RATE, 0x22);
-+
-+ /* AVDD on, XVDD on */
-+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x16);
-+
-+ /* Output control */
-+ rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0xfff9);
-+
-+ /* Sleep mode off */
-+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_OUT);
-+
-+ /* initialize register set for qvga*/
-+ rc |= jbt_init_regs(jbt, 1);
-+
-+ return rc ? -EIO : 0;
-+}
-+
-+static int normal_to_sleep(struct jbt_info *jbt)
-+{
-+ int rc;
-+
-+ rc = jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF);
-+ rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0x8002);
-+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_IN);
-+
-+ return rc ? -EIO : 0;
-+}
-+
-+static int sleep_to_standby(struct jbt_info *jbt)
-+{
-+ return jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x00);
-+}
-+
-+/* frontend function */
-+int jbt6k74_enter_state(struct jbt_info *jbt, enum jbt_state new_state)
-+{
-+ int rc = -EINVAL;
-+
-+ dev_dbg(&jbt->spi_dev->dev, "entering (old_state=%u, "
-+ "new_state=%u)\n", jbt->state, new_state);
-+
-+ switch (jbt->state) {
-+ case JBT_STATE_DEEP_STANDBY:
-+ switch (new_state) {
-+ case JBT_STATE_DEEP_STANDBY:
-+ rc = 0;
-+ break;
-+ case JBT_STATE_SLEEP:
-+ rc = standby_to_sleep(jbt);
-+ break;
-+ case JBT_STATE_NORMAL:
-+ /* first transition into sleep */
-+ rc = standby_to_sleep(jbt);
-+ /* then transition into normal */
-+ rc |= sleep_to_normal(jbt);
-+ break;
-+ case JBT_STATE_QVGA_NORMAL:
-+ /* first transition into sleep */
-+ rc = standby_to_sleep(jbt);
-+ /* then transition into normal */
-+ rc |= sleep_to_qvga_normal(jbt);
-+ break;
-+ }
-+ break;
-+ case JBT_STATE_SLEEP:
-+ switch (new_state) {
-+ case JBT_STATE_SLEEP:
-+ rc = 0;
-+ break;
-+ case JBT_STATE_DEEP_STANDBY:
-+ rc = sleep_to_standby(jbt);
-+ break;
-+ case JBT_STATE_NORMAL:
-+ rc = sleep_to_normal(jbt);
-+ break;
-+ case JBT_STATE_QVGA_NORMAL:
-+ rc = sleep_to_qvga_normal(jbt);
-+ break;
-+ }
-+ break;
-+ case JBT_STATE_NORMAL:
-+ switch (new_state) {
-+ case JBT_STATE_NORMAL:
-+ rc = 0;
-+ break;
-+ case JBT_STATE_DEEP_STANDBY:
-+ /* first transition into sleep */
-+ rc = normal_to_sleep(jbt);
-+ /* then transition into deep standby */
-+ rc |= sleep_to_standby(jbt);
-+ break;
-+ case JBT_STATE_SLEEP:
-+ rc = normal_to_sleep(jbt);
-+ break;
-+ case JBT_STATE_QVGA_NORMAL:
-+ /* first transition into sleep */
-+ rc = normal_to_sleep(jbt);
-+ /* second transition into deep standby */
-+ rc |= sleep_to_standby(jbt);
-+ /* third transition into sleep */
-+ rc |= standby_to_sleep(jbt);
-+ /* fourth transition into normal */
-+ rc |= sleep_to_qvga_normal(jbt);
-+ break;
-+ }
-+ break;
-+ case JBT_STATE_QVGA_NORMAL:
-+ switch (new_state) {
-+ case JBT_STATE_QVGA_NORMAL:
-+ rc = 0;
-+ break;
-+ case JBT_STATE_DEEP_STANDBY:
-+ /* first transition into sleep */
-+ rc = normal_to_sleep(jbt);
-+ /* then transition into deep standby */
-+ rc |= sleep_to_standby(jbt);
-+ break;
-+ case JBT_STATE_SLEEP:
-+ rc = normal_to_sleep(jbt);
-+ break;
-+ case JBT_STATE_NORMAL:
-+ /* first transition into sleep */
-+ rc = normal_to_sleep(jbt);
-+ /* second transition into deep standby */
-+ rc |= sleep_to_standby(jbt);
-+ /* third transition into sleep */
-+ rc |= standby_to_sleep(jbt);
-+ /* fourth transition into normal */
-+ rc |= sleep_to_normal(jbt);
-+ break;
-+ }
-+ break;
-+ }
-+ if (rc == 0)
-+ jbt->state = new_state;
-+
-+ return rc;
-+}
-+EXPORT_SYMBOL_GPL(jbt6k74_enter_state);
-+
-+int jbt6k74_display_onoff(struct jbt_info *jbt, int on)
-+{
-+ if (on)
-+ return jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_ON);
-+ else
-+ return jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF);
-+}
-+EXPORT_SYMBOL_GPL(jbt6k74_display_onoff);
-+
-+static ssize_t state_read(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(dev);
-+
-+ if (jbt->state >= ARRAY_SIZE(jbt_state_names))
-+ return -EIO;
-+
-+ return sprintf(buf, "%s\n", jbt_state_names[jbt->state]);
-+}
-+
-+static ssize_t state_write(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(dev);
-+ int i, rc;
-+
-+ for (i = 0; i < ARRAY_SIZE(jbt_state_names); i++) {
-+ if (!strncmp(buf, jbt_state_names[i],
-+ strlen(jbt_state_names[i]))) {
-+ rc = jbt6k74_enter_state(jbt, i);
-+ if (rc)
-+ return rc;
-+ switch (i) {
-+ case JBT_STATE_NORMAL:
-+ case JBT_STATE_QVGA_NORMAL:
-+ /* Enable display again after deep-standby */
-+ rc = jbt6k74_display_onoff(jbt, 1);
-+ if (rc)
-+ return rc;
-+ break;
-+ default:
-+ break;
-+ }
-+ return count;
-+ }
-+ }
-+
-+ return -EINVAL;
-+}
-+
-+static DEVICE_ATTR(state, 0644, state_read, state_write);
-+
-+static int reg_by_string(const char *name)
-+{
-+ if (!strcmp(name, "gamma_fine1"))
-+ return JBT_REG_GAMMA1_FINE_1;
-+ else if (!strcmp(name, "gamma_fine2"))
-+ return JBT_REG_GAMMA1_FINE_2;
-+ else if (!strcmp(name, "gamma_inclination"))
-+ return JBT_REG_GAMMA1_INCLINATION;
-+ else
-+ return JBT_REG_GAMMA1_BLUE_OFFSET;
-+}
-+
-+static ssize_t gamma_read(struct device *dev, struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(dev);
-+ int reg = reg_by_string(attr->attr.name);
-+ u16 val;
-+
-+ mutex_lock(&jbt->lock);
-+ val = jbt->reg_cache[reg];
-+ mutex_unlock(&jbt->lock);
-+
-+ return sprintf(buf, "0x%04x\n", val);
-+}
-+
-+static ssize_t gamma_write(struct device *dev, struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(dev);
-+ int reg = reg_by_string(attr->attr.name);
-+ unsigned long val = simple_strtoul(buf, NULL, 10);
-+
-+ jbt_reg_write(jbt, reg, val & 0xff);
-+
-+ return count;
-+}
-+
-+static DEVICE_ATTR(gamma_fine1, 0644, gamma_read, gamma_write);
-+static DEVICE_ATTR(gamma_fine2, 0644, gamma_read, gamma_write);
-+static DEVICE_ATTR(gamma_inclination, 0644, gamma_read, gamma_write);
-+static DEVICE_ATTR(gamma_blue_offset, 0644, gamma_read, gamma_write);
-+
-+static struct attribute *jbt_sysfs_entries[] = {
-+ &dev_attr_state.attr,
-+ &dev_attr_gamma_fine1.attr,
-+ &dev_attr_gamma_fine2.attr,
-+ &dev_attr_gamma_inclination.attr,
-+ &dev_attr_gamma_blue_offset.attr,
-+ NULL,
-+};
-+
-+static struct attribute_group jbt_attr_group = {
-+ .name = NULL,
-+ .attrs = jbt_sysfs_entries,
-+};
-+
-+/* linux device model infrastructure */
-+
-+static int __devinit jbt_probe(struct spi_device *spi)
-+{
-+ int rc;
-+ struct jbt_info *jbt;
-+
-+ /* the controller doesn't have a MISO pin; we can't do detection */
-+
-+ spi->mode = SPI_CPOL | SPI_CPHA;
-+ spi->bits_per_word = 9;
-+
-+ rc = spi_setup(spi);
-+ if (rc < 0) {
-+ dev_err(&spi->dev,
-+ "error during spi_setup of jbt6k74 driver\n");
-+ return rc;
-+ }
-+
-+ jbt = kzalloc(sizeof(*jbt), GFP_KERNEL);
-+ if (!jbt)
-+ return -ENOMEM;
-+
-+ jbt->spi_dev = spi;
-+ jbt->state = JBT_STATE_DEEP_STANDBY;
-+ mutex_init(&jbt->lock);
-+
-+ dev_set_drvdata(&spi->dev, jbt);
-+
-+ rc = jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
-+ if (rc < 0) {
-+ dev_err(&spi->dev, "cannot enter NORMAL state\n");
-+ goto err_free_drvdata;
-+ }
-+
-+ rc = jbt6k74_display_onoff(jbt, 1);
-+ if (rc < 0) {
-+ dev_err(&spi->dev, "cannot switch display on\n");
-+ goto err_standby;
-+ }
-+
-+ rc = sysfs_create_group(&spi->dev.kobj, &jbt_attr_group);
-+ if (rc < 0) {
-+ dev_err(&spi->dev, "cannot create sysfs group\n");
-+ goto err_off;
-+ }
-+
-+ return 0;
-+
-+err_off:
-+ jbt6k74_display_onoff(jbt, 0);
-+err_standby:
-+ jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
-+err_free_drvdata:
-+ dev_set_drvdata(&spi->dev, NULL);
-+ kfree(jbt);
-+
-+ return rc;
-+}
-+
-+static int __devexit jbt_remove(struct spi_device *spi)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
-+
-+ /* We don't want to switch off the display in case the user
-+ * accidentially onloads the module (whose use count normally is 0) */
-+
-+ sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group);
-+ dev_set_drvdata(&spi->dev, NULL);
-+ kfree(jbt);
-+
-+ return 0;
-+}
-+
-+#ifdef CONFIG_PM
-+static int jbt_suspend(struct spi_device *spi, pm_message_t state)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
-+
-+ /* Save mode for resume */
-+ jbt->last_state = jbt->state;
-+ jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
-+
-+ return 0;
-+}
-+
-+static int jbt_resume(struct spi_device *spi)
-+{
-+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
-+
-+ jbt6k74_enter_state(jbt, jbt->last_state);
-+
-+ switch (jbt->last_state) {
-+ case JBT_STATE_NORMAL:
-+ case JBT_STATE_QVGA_NORMAL:
-+ jbt6k74_display_onoff(jbt, 1);
-+ break;
-+ default:
-+ break;
-+ }
-+
-+ return 0;
-+}
-+#else
-+#define jbt_suspend NULL
-+#define jbt_resume NULL
-+#endif
-+
-+static struct spi_driver jbt6k74_driver = {
-+ .driver = {
-+ .name = "jbt6k74",
-+ .owner = THIS_MODULE,
-+ },
-+
-+ .probe = jbt_probe,
-+ .remove = __devexit_p(jbt_remove),
-+ .suspend = jbt_suspend,
-+ .resume = jbt_resume,
-+};
-+
-+static int __init jbt_init(void)
-+{
-+ return spi_register_driver(&jbt6k74_driver);
-+}
-+
-+static void __exit jbt_exit(void)
-+{
-+ spi_unregister_driver(&jbt6k74_driver);
-+}
-+
-+MODULE_DESCRIPTION("SPI driver for tpo JBT6K74-AS LCM control interface");
-+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
-+MODULE_LICENSE("GPL");
-+
-+module_init(jbt_init);
-+module_exit(jbt_exit);
---
-1.5.6.3
-
generated by cgit v1.1 at 2024-11-19 02:25:49 +0000