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-rw-r--r--target/linux/omap24xx/patches-2.6.36/600-tsc2005.patch1031
1 files changed, 0 insertions, 1031 deletions
diff --git a/target/linux/omap24xx/patches-2.6.36/600-tsc2005.patch b/target/linux/omap24xx/patches-2.6.36/600-tsc2005.patch
deleted file mode 100644
index 6146eb9..0000000
--- a/target/linux/omap24xx/patches-2.6.36/600-tsc2005.patch
+++ /dev/null
@@ -1,1031 +0,0 @@
----
- drivers/input/touchscreen/Kconfig | 11
- drivers/input/touchscreen/Makefile | 1
- drivers/input/touchscreen/tsc2005.c | 958 ++++++++++++++++++++++++++++++++++++
- include/linux/spi/tsc2005.h | 30 +
- 4 files changed, 1000 insertions(+)
-
---- linux-2.6.36-rc4.orig/drivers/input/touchscreen/Kconfig
-+++ linux-2.6.36-rc4/drivers/input/touchscreen/Kconfig
-@@ -586,6 +586,17 @@ config TOUCHSCREEN_TOUCHIT213
- To compile this driver as a module, choose M here: the
- module will be called touchit213.
-
-+config TOUCHSCREEN_TSC2005
-+ tristate "TSC2005 based touchscreens"
-+ depends on SPI_MASTER
-+ help
-+ Say Y here if you have a TSC2005 based touchscreen.
-+
-+ If unsure, say N.
-+
-+ To compile this driver as a module, choose M here: the
-+ module will be called tsc2005.
-+
- config TOUCHSCREEN_TSC2007
- tristate "TSC2007 based touchscreens"
- depends on I2C
---- linux-2.6.36-rc4.orig/drivers/input/touchscreen/Makefile
-+++ linux-2.6.36-rc4/drivers/input/touchscreen/Makefile
-@@ -40,6 +40,7 @@ obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmp
- obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
- obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
- obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
-+obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o
- obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o
- obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
- obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o
---- /dev/null
-+++ linux-2.6.36-rc4/drivers/input/touchscreen/tsc2005.c
-@@ -0,0 +1,958 @@
-+/*
-+ * TSC2005 touchscreen driver
-+ *
-+ * Copyright (C) 2006-2008 Nokia Corporation
-+ *
-+ * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
-+ * based on TSC2301 driver by Klaus K. Pedersen <klaus.k.pedersen@nokia.com>
-+ *
-+ * 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/module.h>
-+#include <linux/input.h>
-+#include <linux/interrupt.h>
-+#include <linux/delay.h>
-+#include <linux/spi/spi.h>
-+
-+#include <linux/spi/tsc2005.h>
-+
-+/**
-+ * The touchscreen interface operates as follows:
-+ *
-+ * Initialize:
-+ * Request access to GPIO103 (DAV)
-+ * tsc2005_ts_irq_handler will trigger when DAV line goes down
-+ *
-+ * 1) Pen is pressed against touchscreeen
-+ * 2) TSC2005 performs AD conversion
-+ * 3) After the conversion is done TSC2005 drives DAV line down
-+ * 4) GPIO IRQ is received and tsc2005_ts_irq_handler is called
-+ * 5) tsc2005_ts_irq_handler queues up an spi transfer to fetch
-+ * the x, y, z1, z2 values
-+ * 6) tsc2005_ts_rx() reports coordinates to input layer and
-+ * sets up tsc2005_ts_timer() to be called after TSC2005_TS_SCAN_TIME
-+ * 7) When the penup_timer expires, there have not been DAV interrupts
-+ * during the last 20ms which means the pen has been lifted.
-+ */
-+
-+#define TSC2005_VDD_LOWER_27
-+
-+#ifdef TSC2005_VDD_LOWER_27
-+#define TSC2005_HZ (10000000)
-+#else
-+#define TSC2005_HZ (25000000)
-+#endif
-+
-+#define TSC2005_CMD (0x80)
-+#define TSC2005_REG (0x00)
-+
-+#define TSC2005_CMD_STOP (1)
-+#define TSC2005_CMD_10BIT (0 << 2)
-+#define TSC2005_CMD_12BIT (1 << 2)
-+
-+#define TSC2005_CMD_SCAN_XYZZ (0 << 3)
-+#define TSC2005_CMD_SCAN_XY (1 << 3)
-+#define TSC2005_CMD_SCAN_X (2 << 3)
-+#define TSC2005_CMD_SCAN_Y (3 << 3)
-+#define TSC2005_CMD_SCAN_ZZ (4 << 3)
-+#define TSC2005_CMD_AUX_SINGLE (5 << 3)
-+#define TSC2005_CMD_TEMP1 (6 << 3)
-+#define TSC2005_CMD_TEMP2 (7 << 3)
-+#define TSC2005_CMD_AUX_CONT (8 << 3)
-+#define TSC2005_CMD_TEST_X_CONN (9 << 3)
-+#define TSC2005_CMD_TEST_Y_CONN (10 << 3)
-+#define TSC2005_CMD_TEST_SHORT (11 << 3)
-+/* command 12 reserved, according to 2008-03 erratum */
-+#define TSC2005_CMD_DRIVE_XX (13 << 3)
-+#define TSC2005_CMD_DRIVE_YY (14 << 3)
-+#define TSC2005_CMD_DRIVE_YX (15 << 3)
-+
-+#define TSC2005_REG_X (0 << 3)
-+#define TSC2005_REG_Y (1 << 3)
-+#define TSC2005_REG_Z1 (2 << 3)
-+#define TSC2005_REG_Z2 (3 << 3)
-+#define TSC2005_REG_AUX (4 << 3)
-+#define TSC2005_REG_TEMP1 (5 << 3)
-+#define TSC2005_REG_TEMP2 (6 << 3)
-+#define TSC2005_REG_STATUS (7 << 3)
-+#define TSC2005_REG_AUX_HIGH (8 << 3)
-+#define TSC2005_REG_AUX_LOW (9 << 3)
-+#define TSC2005_REG_TEMP_HIGH (10 << 3)
-+#define TSC2005_REG_TEMP_LOW (11 << 3)
-+#define TSC2005_REG_CFR0 (12 << 3)
-+#define TSC2005_REG_CFR1 (13 << 3)
-+#define TSC2005_REG_CFR2 (14 << 3)
-+#define TSC2005_REG_FUNCTION (15 << 3)
-+
-+#define TSC2005_REG_PND0 (1 << 1)
-+#define TSC2005_REG_READ (0x01)
-+#define TSC2005_REG_WRITE (0x00)
-+
-+
-+#define TSC2005_CFR0_LONGSAMPLING (1)
-+#define TSC2005_CFR0_DETECTINWAIT (1 << 1)
-+#define TSC2005_CFR0_SENSETIME_32US (0)
-+#define TSC2005_CFR0_SENSETIME_96US (1 << 2)
-+#define TSC2005_CFR0_SENSETIME_544US (1 << 3)
-+#define TSC2005_CFR0_SENSETIME_2080US (1 << 4)
-+#define TSC2005_CFR0_SENSETIME_2656US (0x001C)
-+#define TSC2005_CFR0_PRECHARGE_20US (0x0000)
-+#define TSC2005_CFR0_PRECHARGE_84US (0x0020)
-+#define TSC2005_CFR0_PRECHARGE_276US (0x0040)
-+#define TSC2005_CFR0_PRECHARGE_1044US (0x0080)
-+#define TSC2005_CFR0_PRECHARGE_1364US (0x00E0)
-+#define TSC2005_CFR0_STABTIME_0US (0x0000)
-+#define TSC2005_CFR0_STABTIME_100US (0x0100)
-+#define TSC2005_CFR0_STABTIME_500US (0x0200)
-+#define TSC2005_CFR0_STABTIME_1MS (0x0300)
-+#define TSC2005_CFR0_STABTIME_5MS (0x0400)
-+#define TSC2005_CFR0_STABTIME_100MS (0x0700)
-+#define TSC2005_CFR0_CLOCK_4MHZ (0x0000)
-+#define TSC2005_CFR0_CLOCK_2MHZ (0x0800)
-+#define TSC2005_CFR0_CLOCK_1MHZ (0x1000)
-+#define TSC2005_CFR0_RESOLUTION12 (0x2000)
-+#define TSC2005_CFR0_STATUS (0x4000)
-+#define TSC2005_CFR0_PENMODE (0x8000)
-+
-+#define TSC2005_CFR0_INITVALUE (TSC2005_CFR0_STABTIME_1MS | \
-+ TSC2005_CFR0_CLOCK_1MHZ | \
-+ TSC2005_CFR0_RESOLUTION12 | \
-+ TSC2005_CFR0_PRECHARGE_276US | \
-+ TSC2005_CFR0_PENMODE)
-+
-+/* Bits common to both read and write of config register 0 */
-+#define TSC2005_CFR0_RW_MASK 0x3fff
-+
-+#define TSC2005_CFR1_BATCHDELAY_0MS (0x0000)
-+#define TSC2005_CFR1_BATCHDELAY_1MS (0x0001)
-+#define TSC2005_CFR1_BATCHDELAY_2MS (0x0002)
-+#define TSC2005_CFR1_BATCHDELAY_4MS (0x0003)
-+#define TSC2005_CFR1_BATCHDELAY_10MS (0x0004)
-+#define TSC2005_CFR1_BATCHDELAY_20MS (0x0005)
-+#define TSC2005_CFR1_BATCHDELAY_40MS (0x0006)
-+#define TSC2005_CFR1_BATCHDELAY_100MS (0x0007)
-+
-+#define TSC2005_CFR1_INITVALUE (TSC2005_CFR1_BATCHDELAY_4MS)
-+
-+#define TSC2005_CFR2_MAVE_TEMP (0x0001)
-+#define TSC2005_CFR2_MAVE_AUX (0x0002)
-+#define TSC2005_CFR2_MAVE_Z (0x0004)
-+#define TSC2005_CFR2_MAVE_Y (0x0008)
-+#define TSC2005_CFR2_MAVE_X (0x0010)
-+#define TSC2005_CFR2_AVG_1 (0x0000)
-+#define TSC2005_CFR2_AVG_3 (0x0400)
-+#define TSC2005_CFR2_AVG_7 (0x0800)
-+#define TSC2005_CFR2_MEDIUM_1 (0x0000)
-+#define TSC2005_CFR2_MEDIUM_3 (0x1000)
-+#define TSC2005_CFR2_MEDIUM_7 (0x2000)
-+#define TSC2005_CFR2_MEDIUM_15 (0x3000)
-+
-+#define TSC2005_CFR2_IRQ_MASK (0xC000)
-+#define TSC2005_CFR2_IRQ_DAV (0x4000)
-+#define TSC2005_CFR2_IRQ_PEN (0x8000)
-+#define TSC2005_CFR2_IRQ_PENDAV (0x0000)
-+
-+#define TSC2005_CFR2_INITVALUE (TSC2005_CFR2_IRQ_PENDAV | \
-+ TSC2005_CFR2_MAVE_X | \
-+ TSC2005_CFR2_MAVE_Y | \
-+ TSC2005_CFR2_MAVE_Z | \
-+ TSC2005_CFR2_MEDIUM_15 | \
-+ TSC2005_CFR2_AVG_7)
-+
-+#define MAX_12BIT ((1 << 12) - 1)
-+#define TS_SAMPLES 4
-+#define TSC2005_TS_PENUP_TIME 40
-+
-+static const u32 tsc2005_read_reg[] = {
-+ (TSC2005_REG | TSC2005_REG_X | TSC2005_REG_READ) << 16,
-+ (TSC2005_REG | TSC2005_REG_Y | TSC2005_REG_READ) << 16,
-+ (TSC2005_REG | TSC2005_REG_Z1 | TSC2005_REG_READ) << 16,
-+ (TSC2005_REG | TSC2005_REG_Z2 | TSC2005_REG_READ) << 16,
-+};
-+#define NUM_READ_REGS (sizeof(tsc2005_read_reg)/sizeof(tsc2005_read_reg[0]))
-+
-+struct tsc2005 {
-+ struct spi_device *spi;
-+
-+ struct input_dev *idev;
-+ char phys[32];
-+ struct timer_list penup_timer;
-+
-+ /* ESD recovery via a hardware reset if the tsc2005
-+ * doesn't respond after a configurable period (in ms) of
-+ * IRQ/SPI inactivity. If esd_timeout is 0, timer and work
-+ * fields are used.
-+ */
-+ u32 esd_timeout;
-+ struct timer_list esd_timer;
-+ struct work_struct esd_work;
-+
-+ spinlock_t lock;
-+ struct mutex mutex;
-+
-+ struct spi_message read_msg;
-+ struct spi_transfer read_xfer[NUM_READ_REGS];
-+ u32 data[NUM_READ_REGS];
-+
-+ /* previously reported x,y,p (if pen_down) */
-+ int out_x;
-+ int out_y;
-+ int out_p;
-+ /* fudge parameters - changes must exceed one of these. */
-+ int fudge_x;
-+ int fudge_y;
-+ int fudge_p;
-+ /* raw copy of previous x,y,z */
-+ int in_x;
-+ int in_y;
-+ int in_z1;
-+ int in_z2;
-+ /* average accumulators for each component */
-+ int sample_cnt;
-+ int avg_x;
-+ int avg_y;
-+ int avg_z1;
-+ int avg_z2;
-+ /* configuration */
-+ int x_plate_ohm;
-+ int hw_avg_max;
-+ int stab_time;
-+ int p_max;
-+ int touch_pressure;
-+ /* status */
-+ u8 sample_sent;
-+ u8 pen_down;
-+ u8 disabled;
-+ u8 disable_depth;
-+ u8 spi_pending;
-+
-+ void (*set_reset)(bool enable);
-+};
-+
-+static void tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
-+{
-+ u8 data = TSC2005_CMD | TSC2005_CMD_12BIT | cmd;
-+ struct spi_message msg;
-+ struct spi_transfer xfer = { 0 };
-+
-+ xfer.tx_buf = &data;
-+ xfer.rx_buf = NULL;
-+ xfer.len = 1;
-+ xfer.bits_per_word = 8;
-+
-+ spi_message_init(&msg);
-+ spi_message_add_tail(&xfer, &msg);
-+ spi_sync(ts->spi, &msg);
-+}
-+
-+static void tsc2005_write(struct tsc2005 *ts, u8 reg, u16 value)
-+{
-+ u32 tx;
-+ struct spi_message msg;
-+ struct spi_transfer xfer = { 0 };
-+
-+ tx = (TSC2005_REG | reg | TSC2005_REG_PND0 |
-+ TSC2005_REG_WRITE) << 16;
-+ tx |= value;
-+
-+ xfer.tx_buf = &tx;
-+ xfer.rx_buf = NULL;
-+ xfer.len = 4;
-+ xfer.bits_per_word = 24;
-+
-+ spi_message_init(&msg);
-+ spi_message_add_tail(&xfer, &msg);
-+ spi_sync(ts->spi, &msg);
-+}
-+
-+static void tsc2005_read(struct tsc2005 *ts, u8 reg, u16 *value)
-+{
-+ u32 tx;
-+ u32 rx = 0;
-+ struct spi_message msg;
-+ struct spi_transfer xfer = { 0 };
-+
-+ tx = (TSC2005_REG | reg | TSC2005_REG_READ) << 16;
-+
-+ xfer.tx_buf = &tx;
-+ xfer.rx_buf = &rx;
-+ xfer.len = 4;
-+ xfer.bits_per_word = 24;
-+
-+ spi_message_init(&msg);
-+ spi_message_add_tail(&xfer, &msg);
-+ spi_sync(ts->spi, &msg);
-+ *value = rx;
-+}
-+
-+static void tsc2005_ts_update_pen_state(struct tsc2005 *ts,
-+ int x, int y, int pressure)
-+{
-+ if (pressure) {
-+ input_report_abs(ts->idev, ABS_X, x);
-+ input_report_abs(ts->idev, ABS_Y, y);
-+ input_report_abs(ts->idev, ABS_PRESSURE, pressure);
-+ if (!ts->pen_down) {
-+ input_report_key(ts->idev, BTN_TOUCH, 1);
-+ ts->pen_down = 1;
-+ }
-+ } else {
-+ input_report_abs(ts->idev, ABS_PRESSURE, 0);
-+ if (ts->pen_down) {
-+ input_report_key(ts->idev, BTN_TOUCH, 0);
-+ ts->pen_down = 0;
-+ }
-+ }
-+
-+ input_sync(ts->idev);
-+}
-+
-+/*
-+ * This function is called by the SPI framework after the coordinates
-+ * have been read from TSC2005
-+ */
-+static void tsc2005_ts_rx(void *arg)
-+{
-+ struct tsc2005 *ts = arg;
-+ unsigned long flags;
-+ int inside_rect, pressure_limit;
-+ int x, y, z1, z2, pressure;
-+
-+ spin_lock_irqsave(&ts->lock, flags);
-+
-+ if (ts->disable_depth) {
-+ ts->spi_pending = 0;
-+ goto out;
-+ }
-+
-+ x = ts->data[0];
-+ y = ts->data[1];
-+ z1 = ts->data[2];
-+ z2 = ts->data[3];
-+
-+ /* validate pressure and position */
-+ if (x > MAX_12BIT || y > MAX_12BIT)
-+ goto out;
-+
-+ /* skip coords if the pressure-components are out of range */
-+ if (z1 < 100 || z2 > MAX_12BIT || z1 >= z2)
-+ goto out;
-+
-+ /* skip point if this is a pen down with the exact same values as
-+ * the value before pen-up - that implies SPI fed us stale data
-+ */
-+ if (!ts->pen_down &&
-+ ts->in_x == x &&
-+ ts->in_y == y &&
-+ ts->in_z1 == z1 &&
-+ ts->in_z2 == z2)
-+ goto out;
-+
-+ /* At this point we are happy we have a valid and useful reading.
-+ * Remember it for later comparisons. We may now begin downsampling
-+ */
-+ ts->in_x = x;
-+ ts->in_y = y;
-+ ts->in_z1 = z1;
-+ ts->in_z2 = z2;
-+
-+ /* don't run average on the "pen down" event */
-+ if (ts->sample_sent) {
-+ ts->avg_x += x;
-+ ts->avg_y += y;
-+ ts->avg_z1 += z1;
-+ ts->avg_z2 += z2;
-+
-+ if (++ts->sample_cnt < TS_SAMPLES)
-+ goto out;
-+
-+ x = ts->avg_x / TS_SAMPLES;
-+ y = ts->avg_y / TS_SAMPLES;
-+ z1 = ts->avg_z1 / TS_SAMPLES;
-+ z2 = ts->avg_z2 / TS_SAMPLES;
-+ }
-+
-+ ts->sample_cnt = 0;
-+ ts->avg_x = 0;
-+ ts->avg_y = 0;
-+ ts->avg_z1 = 0;
-+ ts->avg_z2 = 0;
-+
-+ pressure = x * (z2 - z1) / z1;
-+ pressure = pressure * ts->x_plate_ohm / 4096;
-+
-+ pressure_limit = ts->sample_sent ? ts->p_max : ts->touch_pressure;
-+ if (pressure > pressure_limit)
-+ goto out;
-+
-+ /* Discard the event if it still is within the previous rect -
-+ * unless the pressure is clearly harder, but then use previous
-+ * x,y position. If any coordinate deviates enough, fudging
-+ * of all three will still take place in the input layer.
-+ */
-+ inside_rect = (ts->sample_sent &&
-+ x > (int)ts->out_x - ts->fudge_x &&
-+ x < (int)ts->out_x + ts->fudge_x &&
-+ y > (int)ts->out_y - ts->fudge_y &&
-+ y < (int)ts->out_y + ts->fudge_y);
-+ if (inside_rect)
-+ x = ts->out_x, y = ts->out_y;
-+
-+ if (!inside_rect || pressure < (ts->out_p - ts->fudge_p)) {
-+ tsc2005_ts_update_pen_state(ts, x, y, pressure);
-+ ts->sample_sent = 1;
-+ ts->out_x = x;
-+ ts->out_y = y;
-+ ts->out_p = pressure;
-+ }
-+out:
-+ if (ts->spi_pending > 1) {
-+ /* One or more interrupts (sometimes several dozens)
-+ * occured while waiting for the SPI read - get
-+ * another read going.
-+ */
-+ ts->spi_pending = 1;
-+ if (spi_async(ts->spi, &ts->read_msg)) {
-+ dev_err(&ts->spi->dev, "ts: spi_async() failed");
-+ ts->spi_pending = 0;
-+ }
-+ } else
-+ ts->spi_pending = 0;
-+
-+ /* kick pen up timer - to make sure it expires again(!) */
-+ if (ts->sample_sent) {
-+ mod_timer(&ts->penup_timer,
-+ jiffies + msecs_to_jiffies(TSC2005_TS_PENUP_TIME));
-+ /* Also kick the watchdog, as we still think we're alive */
-+ if (ts->esd_timeout && ts->disable_depth == 0) {
-+ unsigned long wdj = msecs_to_jiffies(ts->esd_timeout);
-+ mod_timer(&ts->esd_timer, round_jiffies(jiffies+wdj));
-+ }
-+ }
-+ spin_unlock_irqrestore(&ts->lock, flags);
-+}
-+
-+/* This penup timer is very forgiving of delayed SPI reads. The
-+ * (ESD) watchdog will rescue us if spi_pending remains set, unless
-+ * we are enterring the disabled state. In that case we must just
-+ * handle the pen up, and let disabling complete.
-+ */
-+static void tsc2005_ts_penup_timer_handler(unsigned long data)
-+{
-+ struct tsc2005 *ts = (struct tsc2005 *)data;
-+ if ((!ts->spi_pending || ts->disable_depth) &&
-+ ts->sample_sent) {
-+ tsc2005_ts_update_pen_state(ts, 0, 0, 0);
-+ ts->sample_sent = 0;
-+ }
-+}
-+
-+/*
-+ * This interrupt is called when pen is down and coordinates are
-+ * available. That is indicated by a either:
-+ * a) a rising edge on PINTDAV or (PENDAV mode)
-+ * b) a falling edge on DAV line (DAV mode)
-+ * depending on the setting of the IRQ bits in the CFR2 setting above.
-+ */
-+static irqreturn_t tsc2005_ts_irq_handler(int irq, void *dev_id)
-+{
-+ struct tsc2005 *ts = dev_id;
-+ if (ts->disable_depth)
-+ goto out;
-+
-+ if (!ts->spi_pending) {
-+ if (spi_async(ts->spi, &ts->read_msg)) {
-+ dev_err(&ts->spi->dev, "ts: spi_async() failed");
-+ goto out;
-+ }
-+ }
-+ /* By shifting in 1s we can never wrap */
-+ ts->spi_pending = (ts->spi_pending<<1)+1;
-+
-+ /* Kick pen up timer only if it's not been started yet. Strictly,
-+ * it isn't even necessary to start it at all here, but doing so
-+ * keeps an equivalence between pen state and timer state.
-+ * The SPI read loop will keep pushing it into the future.
-+ * If it times out with an SPI pending, it's ignored anyway.
-+ */
-+ if (!timer_pending(&ts->penup_timer)) {
-+ unsigned long pu = msecs_to_jiffies(TSC2005_TS_PENUP_TIME);
-+ ts->penup_timer.expires = jiffies + pu;
-+ add_timer(&ts->penup_timer);
-+ }
-+out:
-+ return IRQ_HANDLED;
-+}
-+
-+static void tsc2005_ts_setup_spi_xfer(struct tsc2005 *ts)
-+{
-+ struct spi_message *m = &ts->read_msg;
-+ struct spi_transfer *x = &ts->read_xfer[0];
-+ int i;
-+
-+ spi_message_init(m);
-+
-+ for (i = 0; i < NUM_READ_REGS; i++, x++) {
-+ x->tx_buf = &tsc2005_read_reg[i];
-+ x->rx_buf = &ts->data[i];
-+ x->len = 4;
-+ x->bits_per_word = 24;
-+ x->cs_change = i < (NUM_READ_REGS - 1);
-+ spi_message_add_tail(x, m);
-+ }
-+
-+ m->complete = tsc2005_ts_rx;
-+ m->context = ts;
-+}
-+
-+static ssize_t tsc2005_ts_pen_down_show(struct device *dev,
-+ struct device_attribute *attr,
-+ char *buf)
-+{
-+ struct tsc2005 *ts = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%u\n", ts->pen_down);
-+}
-+
-+static DEVICE_ATTR(pen_down, S_IRUGO, tsc2005_ts_pen_down_show, NULL);
-+
-+static int tsc2005_configure(struct tsc2005 *ts, int flags)
-+{
-+ tsc2005_write(ts, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE);
-+ tsc2005_write(ts, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE);
-+ tsc2005_write(ts, TSC2005_REG_CFR2, TSC2005_CFR2_INITVALUE);
-+ tsc2005_cmd(ts, flags);
-+
-+ return 0;
-+}
-+
-+static void tsc2005_start_scan(struct tsc2005 *ts)
-+{
-+ tsc2005_configure(ts, TSC2005_CMD_SCAN_XYZZ);
-+}
-+
-+static void tsc2005_stop_scan(struct tsc2005 *ts)
-+{
-+ tsc2005_cmd(ts, TSC2005_CMD_STOP);
-+}
-+
-+/* Must be called with mutex held */
-+static void tsc2005_disable(struct tsc2005 *ts)
-+{
-+ if (ts->disable_depth++ != 0)
-+ return;
-+
-+ disable_irq(ts->spi->irq);
-+ if (ts->esd_timeout)
-+ del_timer(&ts->esd_timer);
-+
-+ /* wait until penup timer expire normally */
-+ do {
-+ msleep(4);
-+ } while (ts->sample_sent);
-+
-+ tsc2005_stop_scan(ts);
-+}
-+
-+static void tsc2005_enable(struct tsc2005 *ts)
-+{
-+ if (ts->disable_depth != 1)
-+ goto out;
-+
-+ if (ts->esd_timeout) {
-+ unsigned long wdj = msecs_to_jiffies(ts->esd_timeout);
-+ ts->esd_timer.expires = round_jiffies(jiffies+wdj);
-+ add_timer(&ts->esd_timer);
-+ }
-+ tsc2005_start_scan(ts);
-+ enable_irq(ts->spi->irq);
-+out:
-+ --ts->disable_depth;
-+}
-+
-+static ssize_t tsc2005_disable_show(struct device *dev,
-+ struct device_attribute *attr, char *buf)
-+{
-+ struct tsc2005 *ts = dev_get_drvdata(dev);
-+
-+ return sprintf(buf, "%u\n", ts->disabled);
-+}
-+
-+static ssize_t tsc2005_disable_store(struct device *dev,
-+ struct device_attribute *attr,
-+ const char *buf, size_t count)
-+{
-+ struct tsc2005 *ts = dev_get_drvdata(dev);
-+ unsigned long res;
-+ int i;
-+
-+ if (strict_strtoul(buf, 10, &res) < 0)
-+ return -EINVAL;
-+ i = res ? 1 : 0;
-+
-+ mutex_lock(&ts->mutex);
-+ if (i == ts->disabled)
-+ goto out;
-+ ts->disabled = i;
-+
-+ if (i)
-+ tsc2005_disable(ts);
-+ else
-+ tsc2005_enable(ts);
-+out:
-+ mutex_unlock(&ts->mutex);
-+ return count;
-+}
-+
-+static DEVICE_ATTR(disable_ts, 0664, tsc2005_disable_show,
-+ tsc2005_disable_store);
-+
-+static ssize_t tsc2005_ctrl_selftest_show(struct device *dev,
-+ struct device_attribute *attr,
-+ char *buf)
-+{
-+ u16 temp_high_orig, temp_high_test, temp_high;
-+ unsigned int result = 1;
-+ struct tsc2005 *ts = dev_get_drvdata(dev);
-+
-+ if (!ts->set_reset) {
-+ dev_warn(&ts->spi->dev,
-+ "unable to selftest: reset not configured\n");
-+ result = 0;
-+ goto out;
-+ }
-+
-+ mutex_lock(&ts->mutex);
-+ tsc2005_disable(ts);
-+
-+ /* Test ctrl communications via temp high / low registers */
-+ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high_orig);
-+
-+ temp_high_test = (temp_high_orig - 1) & 0x0FFF;
-+
-+ tsc2005_write(ts, TSC2005_REG_TEMP_HIGH, temp_high_test);
-+
-+ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high);
-+
-+ if (temp_high != temp_high_test) {
-+ result = 0;
-+ dev_warn(dev, "selftest failed: %d != %d\n",
-+ temp_high, temp_high_test);
-+ }
-+
-+ /* HW Reset */
-+ ts->set_reset(0);
-+ msleep(1); /* only 10us required */
-+ ts->set_reset(1);
-+
-+ tsc2005_enable(ts);
-+
-+ /* Test that reset really happened */
-+ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high);
-+
-+ if (temp_high != temp_high_orig) {
-+ result = 0;
-+ dev_warn(dev, "selftest failed after reset: "
-+ "%d != %d\n",
-+ temp_high, temp_high_orig);
-+ }
-+
-+ mutex_unlock(&ts->mutex);
-+
-+out:
-+ return sprintf(buf, "%u\n", result);
-+}
-+
-+static DEVICE_ATTR(ts_ctrl_selftest, S_IRUGO, tsc2005_ctrl_selftest_show, NULL);
-+
-+static void tsc2005_esd_timer_handler(unsigned long data)
-+{
-+ struct tsc2005 *ts = (struct tsc2005 *)data;
-+ if (!ts->disable_depth)
-+ schedule_work(&ts->esd_work);
-+}
-+
-+static void tsc2005_rst_handler(struct work_struct *work)
-+{
-+ u16 reg_val;
-+ struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work);
-+ unsigned long wdj;
-+
-+ mutex_lock(&ts->mutex);
-+
-+ /* If we are disabled, or the a touch has been detected,
-+ * then ignore this timeout. The enable will restart the
-+ * watchdog, as it restarts scanning
-+ */
-+ if (ts->disable_depth)
-+ goto out;
-+
-+ /* If we cannot read our known value from configuration register 0
-+ * then reset the controller as if from power-up and start
-+ * scanning again. Always re-arm the watchdog.
-+ */
-+ tsc2005_read(ts, TSC2005_REG_CFR0, &reg_val);
-+ if ((reg_val ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK) {
-+ dev_info(&ts->spi->dev, "TSC not responding, resetting.\n");
-+ /* If this timer kicked in, the penup timer, if ever active
-+ * at all, must have expired ages ago, so no need to del it.
-+ */
-+ ts->set_reset(0);
-+ if (ts->sample_sent) {
-+ tsc2005_ts_update_pen_state(ts, 0, 0, 0);
-+ ts->sample_sent = 0;
-+ }
-+ ts->spi_pending = 0;
-+ msleep(1); /* only 10us required */
-+ ts->set_reset(1);
-+ tsc2005_start_scan(ts);
-+ }
-+ wdj = msecs_to_jiffies(ts->esd_timeout);
-+ mod_timer(&ts->esd_timer, round_jiffies(jiffies+wdj));
-+
-+out:
-+ mutex_unlock(&ts->mutex);
-+}
-+
-+static int __devinit tsc2005_ts_init(struct tsc2005 *ts,
-+ struct tsc2005_platform_data *pdata)
-+{
-+ struct input_dev *idev;
-+ int r;
-+ int x_max, y_max;
-+
-+ init_timer(&ts->penup_timer);
-+ setup_timer(&ts->penup_timer, tsc2005_ts_penup_timer_handler,
-+ (unsigned long)ts);
-+
-+ spin_lock_init(&ts->lock);
-+ mutex_init(&ts->mutex);
-+
-+ ts->x_plate_ohm = pdata->ts_x_plate_ohm ? : 280;
-+ ts->hw_avg_max = pdata->ts_hw_avg;
-+ ts->stab_time = pdata->ts_stab_time;
-+ x_max = pdata->ts_x_max ? : 4096;
-+ ts->fudge_x = pdata->ts_x_fudge ? : 4;
-+ y_max = pdata->ts_y_max ? : 4096;
-+ ts->fudge_y = pdata->ts_y_fudge ? : 8;
-+ ts->p_max = pdata->ts_pressure_max ? : MAX_12BIT;
-+ ts->touch_pressure = pdata->ts_touch_pressure ? : ts->p_max;
-+ ts->fudge_p = pdata->ts_pressure_fudge ? : 2;
-+
-+ ts->set_reset = pdata->set_reset;
-+
-+ idev = input_allocate_device();
-+ if (idev == NULL) {
-+ r = -ENOMEM;
-+ goto err1;
-+ }
-+
-+ idev->name = "TSC2005 touchscreen";
-+ snprintf(ts->phys, sizeof(ts->phys), "%s/input-ts",
-+ dev_name(&ts->spi->dev));
-+ idev->phys = ts->phys;
-+
-+ idev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
-+ idev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
-+ idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
-+ ts->idev = idev;
-+
-+ tsc2005_ts_setup_spi_xfer(ts);
-+
-+ input_set_abs_params(idev, ABS_X, 0, x_max, ts->fudge_x, 0);
-+ input_set_abs_params(idev, ABS_Y, 0, y_max, ts->fudge_y, 0);
-+ input_set_abs_params(idev, ABS_PRESSURE, 0, ts->p_max, ts->fudge_p, 0);
-+
-+ tsc2005_start_scan(ts);
-+
-+ r = request_irq(ts->spi->irq, tsc2005_ts_irq_handler,
-+ (((TSC2005_CFR2_INITVALUE & TSC2005_CFR2_IRQ_MASK) ==
-+ TSC2005_CFR2_IRQ_PENDAV)
-+ ? IRQF_TRIGGER_RISING
-+ : IRQF_TRIGGER_FALLING) |
-+ IRQF_DISABLED, "tsc2005", ts);
-+ if (r < 0) {
-+ dev_err(&ts->spi->dev, "unable to get DAV IRQ");
-+ goto err2;
-+ }
-+
-+ set_irq_wake(ts->spi->irq, 1);
-+
-+ r = input_register_device(idev);
-+ if (r < 0) {
-+ dev_err(&ts->spi->dev, "can't register touchscreen device\n");
-+ goto err3;
-+ }
-+
-+ /* We can tolerate these failing */
-+ r = device_create_file(&ts->spi->dev, &dev_attr_ts_ctrl_selftest);
-+ if (r < 0)
-+ dev_warn(&ts->spi->dev, "can't create sysfs file for %s: %d\n",
-+ dev_attr_ts_ctrl_selftest.attr.name, r);
-+
-+ r = device_create_file(&ts->spi->dev, &dev_attr_pen_down);
-+ if (r < 0)
-+ dev_warn(&ts->spi->dev, "can't create sysfs file for %s: %d\n",
-+ dev_attr_pen_down.attr.name, r);
-+
-+ r = device_create_file(&ts->spi->dev, &dev_attr_disable_ts);
-+ if (r < 0)
-+ dev_warn(&ts->spi->dev, "can't create sysfs file for %s: %d\n",
-+ dev_attr_disable_ts.attr.name, r);
-+
-+ /* Finally, configure and start the optional EDD watchdog. */
-+ ts->esd_timeout = pdata->esd_timeout;
-+ if (ts->esd_timeout && ts->set_reset) {
-+ unsigned long wdj;
-+ setup_timer(&ts->esd_timer, tsc2005_esd_timer_handler,
-+ (unsigned long)ts);
-+ INIT_WORK(&ts->esd_work, tsc2005_rst_handler);
-+ wdj = msecs_to_jiffies(ts->esd_timeout);
-+ ts->esd_timer.expires = round_jiffies(jiffies+wdj);
-+ add_timer(&ts->esd_timer);
-+ }
-+
-+ return 0;
-+err3:
-+ free_irq(ts->spi->irq, ts);
-+err2:
-+ tsc2005_stop_scan(ts);
-+ input_free_device(idev);
-+err1:
-+ return r;
-+}
-+
-+static int __devinit tsc2005_probe(struct spi_device *spi)
-+{
-+ struct tsc2005 *ts;
-+ struct tsc2005_platform_data *pdata = spi->dev.platform_data;
-+ int r;
-+
-+ if (spi->irq < 0) {
-+ dev_dbg(&spi->dev, "no irq?\n");
-+ return -ENODEV;
-+ }
-+ if (!pdata) {
-+ dev_dbg(&spi->dev, "no platform data?\n");
-+ return -ENODEV;
-+ }
-+
-+ ts = kzalloc(sizeof(*ts), GFP_KERNEL);
-+ if (ts == NULL)
-+ return -ENOMEM;
-+
-+ dev_set_drvdata(&spi->dev, ts);
-+ ts->spi = spi;
-+ spi->dev.power.power_state = PMSG_ON;
-+
-+ spi->mode = SPI_MODE_0;
-+ spi->bits_per_word = 8;
-+ /* The max speed might've been defined by the board-specific
-+ * struct */
-+ if (!spi->max_speed_hz)
-+ spi->max_speed_hz = TSC2005_HZ;
-+
-+ spi_setup(spi);
-+
-+ r = tsc2005_ts_init(ts, pdata);
-+ if (r)
-+ goto err1;
-+
-+ return 0;
-+
-+err1:
-+ kfree(ts);
-+ return r;
-+}
-+
-+static int __devexit tsc2005_remove(struct spi_device *spi)
-+{
-+ struct tsc2005 *ts = dev_get_drvdata(&spi->dev);
-+
-+ mutex_lock(&ts->mutex);
-+ tsc2005_disable(ts);
-+ mutex_unlock(&ts->mutex);
-+
-+ device_remove_file(&ts->spi->dev, &dev_attr_disable_ts);
-+ device_remove_file(&ts->spi->dev, &dev_attr_pen_down);
-+ device_remove_file(&ts->spi->dev, &dev_attr_ts_ctrl_selftest);
-+
-+ free_irq(ts->spi->irq, ts);
-+ input_unregister_device(ts->idev);
-+
-+ if (ts->esd_timeout)
-+ del_timer(&ts->esd_timer);
-+ kfree(ts);
-+
-+ return 0;
-+}
-+
-+#ifdef CONFIG_PM
-+static int tsc2005_suspend(struct spi_device *spi, pm_message_t mesg)
-+{
-+ struct tsc2005 *ts = dev_get_drvdata(&spi->dev);
-+
-+ mutex_lock(&ts->mutex);
-+ tsc2005_disable(ts);
-+ mutex_unlock(&ts->mutex);
-+
-+ return 0;
-+}
-+
-+static int tsc2005_resume(struct spi_device *spi)
-+{
-+ struct tsc2005 *ts = dev_get_drvdata(&spi->dev);
-+
-+ mutex_lock(&ts->mutex);
-+ tsc2005_enable(ts);
-+ mutex_unlock(&ts->mutex);
-+
-+ return 0;
-+}
-+#endif
-+
-+static struct spi_driver tsc2005_driver = {
-+ .driver = {
-+ .name = "tsc2005",
-+ .owner = THIS_MODULE,
-+ },
-+#ifdef CONFIG_PM
-+ .suspend = tsc2005_suspend,
-+ .resume = tsc2005_resume,
-+#endif
-+ .probe = tsc2005_probe,
-+ .remove = __devexit_p(tsc2005_remove),
-+};
-+
-+static int __init tsc2005_init(void)
-+{
-+ printk(KERN_INFO "TSC2005 driver initializing\n");
-+
-+ return spi_register_driver(&tsc2005_driver);
-+}
-+module_init(tsc2005_init);
-+
-+static void __exit tsc2005_exit(void)
-+{
-+ spi_unregister_driver(&tsc2005_driver);
-+}
-+module_exit(tsc2005_exit);
-+
-+MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS("platform:tsc2005");
---- /dev/null
-+++ linux-2.6.36-rc4/include/linux/spi/tsc2005.h
-@@ -0,0 +1,30 @@
-+#ifndef _LINUX_SPI_TSC2005_H
-+#define _LINUX_SPI_TSC2005_H
-+
-+#include <linux/types.h>
-+
-+struct tsc2005_platform_data {
-+ u16 ts_x_plate_ohm;
-+ u32 ts_stab_time; /* voltage settling time */
-+ u8 ts_hw_avg; /* HW assiseted averaging. Can be
-+ 0, 4, 8, 16 samples per reading */
-+ u32 ts_touch_pressure; /* Pressure limit until we report a
-+ touch event. After that we switch
-+ to ts_max_pressure. */
-+ u32 ts_pressure_max;/* Samples with bigger pressure value will
-+ be ignored, since the corresponding X, Y
-+ values are unreliable */
-+ u32 ts_pressure_fudge;
-+ u32 ts_x_max;
-+ u32 ts_x_fudge;
-+ u32 ts_y_max;
-+ u32 ts_y_fudge;
-+
-+ u32 esd_timeout; /* msec of inactivity before we check */
-+
-+ unsigned ts_ignore_last:1;
-+
-+ void (*set_reset)(bool enable);
-+};
-+
-+#endif