diff options
Diffstat (limited to 'meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.35-input-touchscreen-introduce-tsc2005-driver.patch')
| -rw-r--r-- | meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.35-input-touchscreen-introduce-tsc2005-driver.patch | 804 |
1 files changed, 804 insertions, 0 deletions
diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.35-input-touchscreen-introduce-tsc2005-driver.patch b/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.35-input-touchscreen-introduce-tsc2005-driver.patch new file mode 100644 index 0000000000..41de3db5c8 --- /dev/null +++ b/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.35-input-touchscreen-introduce-tsc2005-driver.patch @@ -0,0 +1,804 @@ +From c0960b696fbccc83925134aec007801073bcac54 Mon Sep 17 00:00:00 2001 +From: Lauri Leukkunen <lauri.leukkunen@nokia.com> +Date: Fri, 12 Mar 2010 16:54:33 +0000 +Subject: [PATCH 7/10] input: touchscreen: introduce tsc2005 driver + +Patch-mainline: 2.6.35? +Discussions: http://www.mail-archive.com/linux-omap@vger.kernel.org/msg26748.html + +Introduce a driver for the Texas Instruments TSC2005 touchscreen +controller (http://focus.ti.com/docs/prod/folders/print/tsc2005.html). + +The patch is based on a driver by Lauri Leukkunen, with modifications +by David Brownell, Phil Carmody, Imre Deak, Hiroshi DOYU, Ari Kauppi, +Tony Lindgren, Jarkko Nikula, Eero Nurkkala and Roman Tereshonkov. + +Signed-off-by: Lauri Leukkunen <lauri.leukkunen@nokia.com> +[aaro.koskinen@nokia.com: patch description, rebasing & cleanup] +Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> +Cc: David Brownell <dbrownell@users.sourceforge.net> +Cc: Phil Carmody <ext-phil.2.carmody@nokia.com> +Cc: Imre Deak <imre.deak@nokia.com> +Cc: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> +Cc: Ari Kauppi <Ext-Ari.Kauppi@nokia.com> +Cc: Tony Lindgren <tony@atomide.com> +Cc: Jarkko Nikula <jhnikula@gmail.com> +Cc: Eero Nurkkala <ext-eero.nurkkala@nokia.com> +Cc: Roman Tereshonkov <roman.tereshonkov@nokia.com> +--- + drivers/input/touchscreen/Kconfig | 11 + + drivers/input/touchscreen/Makefile | 1 + + drivers/input/touchscreen/tsc2005.c | 678 +++++++++++++++++++++++++++++++++++ + include/linux/spi/tsc2005.h | 41 +++ + 4 files changed, 731 insertions(+), 0 deletions(-) + create mode 100644 drivers/input/touchscreen/tsc2005.c + create mode 100644 include/linux/spi/tsc2005.h + +diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig +index dfafc76..72c1797 100644 +--- a/drivers/input/touchscreen/Kconfig ++++ b/drivers/input/touchscreen/Kconfig +@@ -548,6 +548,17 @@ 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 +diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile +index d61a3b4..61fa8b5 100644 +--- a/drivers/input/touchscreen/Makefile ++++ b/drivers/input/touchscreen/Makefile +@@ -33,6 +33,7 @@ obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o + obj-$(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 +diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c +new file mode 100644 +index 0000000..27ee361 +--- /dev/null ++++ b/drivers/input/touchscreen/tsc2005.c +@@ -0,0 +1,678 @@ ++/* ++ * TSC2005 touchscreen driver ++ * ++ * Copyright (C) 2006-2010 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: ++ * ++ * 1) Pen is pressed against the touchscreen. ++ * 2) TSC2005 performs AD conversion. ++ * 3) After the conversion is done TSC2005 drives DAV line down. ++ * 4) GPIO IRQ is received and tsc2005_irq_thread() is scheduled. ++ * 5) tsc2005_irq_thread() queues up an spi transfer to fetch the x, y, z1, z2 ++ * values. ++ * 6) tsc2005_irq_thread() reports coordinates to input layer and sets up ++ * tsc2005_penup_timer() to be called after TSC2005_PENUP_TIME_MS (40ms). ++ * 7) When the penup timer expires, there have not been touch or DAV interrupts ++ * during the last 40ms which means the pen has been lifted. ++ * ++ * ESD recovery via a hardware reset is done if the TSC2005 doesn't respond ++ * after a configurable period (in ms) of activity. If esd_timeout is 0, the ++ * watchdog is disabled. ++ */ ++ ++/* control byte 1 */ ++#define TSC2005_CMD 0x80 ++#define TSC2005_CMD_NORMAL 0x00 ++#define TSC2005_CMD_STOP 0x01 ++#define TSC2005_CMD_12BIT 0x04 ++ ++/* control byte 0 */ ++#define TSC2005_REG_READ 0x0001 ++#define TSC2005_REG_PND0 0x0002 ++#define TSC2005_REG_X 0x0000 ++#define TSC2005_REG_Y 0x0008 ++#define TSC2005_REG_Z1 0x0010 ++#define TSC2005_REG_Z2 0x0018 ++#define TSC2005_REG_TEMP_HIGH 0x0050 ++#define TSC2005_REG_CFR0 0x0060 ++#define TSC2005_REG_CFR1 0x0068 ++#define TSC2005_REG_CFR2 0x0070 ++ ++/* configuration register 0 */ ++#define TSC2005_CFR0_PRECHARGE_276US 0x0040 ++#define TSC2005_CFR0_STABTIME_1MS 0x0300 ++#define TSC2005_CFR0_CLOCK_1MHZ 0x1000 ++#define TSC2005_CFR0_RESOLUTION12 0x2000 ++#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 configuration register 0 */ ++#define TSC2005_CFR0_RW_MASK 0x3fff ++ ++/* configuration register 1 */ ++#define TSC2005_CFR1_BATCHDELAY_4MS 0x0003 ++#define TSC2005_CFR1_INITVALUE TSC2005_CFR1_BATCHDELAY_4MS ++ ++/* configuration register 2 */ ++#define TSC2005_CFR2_MAVE_Z 0x0004 ++#define TSC2005_CFR2_MAVE_Y 0x0008 ++#define TSC2005_CFR2_MAVE_X 0x0010 ++#define TSC2005_CFR2_AVG_7 0x0800 ++#define TSC2005_CFR2_MEDIUM_15 0x3000 ++#define TSC2005_CFR2_INITVALUE (TSC2005_CFR2_MAVE_X | \ ++ TSC2005_CFR2_MAVE_Y | \ ++ TSC2005_CFR2_MAVE_Z | \ ++ TSC2005_CFR2_MEDIUM_15 | \ ++ TSC2005_CFR2_AVG_7) ++ ++#define MAX_12BIT 0xfff ++#define TSC2005_SPI_MAX_SPEED_HZ 10000000 ++#define TSC2005_PENUP_TIME_MS 40 ++ ++struct tsc2005_spi_rd { ++ struct spi_transfer spi_xfer; ++ u32 spi_tx; ++ u32 spi_rx; ++}; ++ ++struct tsc2005 { ++ struct spi_device *spi; ++ ++ struct spi_message spi_read_msg; ++ struct tsc2005_spi_rd spi_x; ++ struct tsc2005_spi_rd spi_y; ++ struct tsc2005_spi_rd spi_z1; ++ struct tsc2005_spi_rd spi_z2; ++ ++ struct input_dev *idev; ++ char phys[32]; ++ ++ struct mutex mutex; ++ ++ struct timer_list penup_timer; ++ struct work_struct penup_work; ++ ++ unsigned int esd_timeout; ++ struct timer_list esd_timer; ++ struct work_struct esd_work; ++ ++ unsigned int x_plate_ohm; ++ ++ bool disabled; ++ unsigned int disable_depth; ++ ++ void (*set_reset)(bool enable); ++}; ++ ++static void tsc2005_cmd(struct tsc2005 *ts, u8 cmd) ++{ ++ u8 tx; ++ struct spi_message msg; ++ struct spi_transfer xfer = { 0 }; ++ ++ tx = TSC2005_CMD | TSC2005_CMD_12BIT | cmd; ++ ++ xfer.tx_buf = &tx; ++ 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 = (reg | TSC2005_REG_PND0) << 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_setup_read(struct tsc2005_spi_rd *rd, u8 reg, bool last) ++{ ++ rd->spi_tx = (reg | TSC2005_REG_READ) << 16; ++ rd->spi_xfer.tx_buf = &rd->spi_tx; ++ rd->spi_xfer.rx_buf = &rd->spi_rx; ++ rd->spi_xfer.len = 4; ++ rd->spi_xfer.bits_per_word = 24; ++ rd->spi_xfer.cs_change = !last; ++} ++ ++static void tsc2005_read(struct tsc2005 *ts, u8 reg, u16 *value) ++{ ++ struct spi_message msg; ++ struct tsc2005_spi_rd spi_rd = { { 0 }, 0, 0 }; ++ ++ tsc2005_setup_read(&spi_rd, reg, 1); ++ ++ spi_message_init(&msg); ++ spi_message_add_tail(&spi_rd.spi_xfer, &msg); ++ spi_sync(ts->spi, &msg); ++ *value = spi_rd.spi_rx; ++} ++ ++static void tsc2005_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); ++ input_report_key(ts->idev, BTN_TOUCH, !!pressure); ++ input_sync(ts->idev); ++ dev_dbg(&ts->spi->dev, "point(%4d,%4d), pressure (%4d)\n", x, y, ++ pressure); ++} ++ ++static irqreturn_t tsc2005_irq_handler(int irq, void *dev_id) ++{ ++ struct tsc2005 *ts = dev_id; ++ ++ /* update the penup timer only if it's pending */ ++ mod_timer_pending(&ts->penup_timer, ++ jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS)); ++ ++ return IRQ_WAKE_THREAD; ++} ++ ++static irqreturn_t tsc2005_irq_thread(int irq, void *_ts) ++{ ++ struct tsc2005 *ts = _ts; ++ unsigned int pressure; ++ u32 x; ++ u32 y; ++ u32 z1; ++ u32 z2; ++ ++ mutex_lock(&ts->mutex); ++ ++ if (unlikely(ts->disable_depth)) ++ goto out; ++ ++ /* read the coordinates */ ++ spi_sync(ts->spi, &ts->spi_read_msg); ++ x = ts->spi_x.spi_rx; ++ y = ts->spi_y.spi_rx; ++ z1 = ts->spi_z1.spi_rx; ++ z2 = ts->spi_z2.spi_rx; ++ ++ /* validate position */ ++ if (unlikely(x > MAX_12BIT || y > MAX_12BIT)) ++ goto out; ++ ++ /* skip coords if the pressure components are out of range */ ++ if (unlikely(z1 == 0 || z2 > MAX_12BIT || z1 >= z2)) ++ goto out; ++ ++ /* compute touch pressure resistance using equation #1 */ ++ pressure = x * (z2 - z1) / z1; ++ pressure = pressure * ts->x_plate_ohm / 4096; ++ if (unlikely(pressure > MAX_12BIT)) ++ goto out; ++ ++ tsc2005_update_pen_state(ts, x, y, pressure); ++ ++ /* set the penup timer */ ++ mod_timer(&ts->penup_timer, ++ jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS)); ++ ++ if (!ts->esd_timeout) ++ goto out; ++ ++ /* update the watchdog timer */ ++ mod_timer(&ts->esd_timer, ++ round_jiffies(jiffies + msecs_to_jiffies(ts->esd_timeout))); ++ ++out: ++ mutex_unlock(&ts->mutex); ++ return IRQ_HANDLED; ++} ++ ++static void tsc2005_penup_timer(unsigned long data) ++{ ++ struct tsc2005 *ts = (struct tsc2005 *)data; ++ ++ schedule_work(&ts->penup_work); ++} ++ ++static void tsc2005_penup_work(struct work_struct *work) ++{ ++ struct tsc2005 *ts = container_of(work, struct tsc2005, penup_work); ++ ++ mutex_lock(&ts->mutex); ++ tsc2005_update_pen_state(ts, 0, 0, 0); ++ mutex_unlock(&ts->mutex); ++} ++ ++static void tsc2005_start_scan(struct tsc2005 *ts) ++{ ++ 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, TSC2005_CMD_NORMAL); ++} ++ ++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_sync(&ts->esd_timer); ++ del_timer_sync(&ts->penup_timer); ++ tsc2005_stop_scan(ts); ++} ++ ++/* must be called with mutex held */ ++static void tsc2005_enable(struct tsc2005 *ts) ++{ ++ if (--ts->disable_depth != 0) ++ return; ++ tsc2005_start_scan(ts); ++ enable_irq(ts->spi->irq); ++ if (!ts->esd_timeout) ++ return; ++ mod_timer(&ts->esd_timer, ++ round_jiffies(jiffies + msecs_to_jiffies(ts->esd_timeout))); ++} ++ ++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, 0664, tsc2005_disable_show, tsc2005_disable_store); ++ ++static ssize_t tsc2005_selftest_show(struct device *dev, ++ struct device_attribute *attr, ++ char *buf) ++{ ++ struct tsc2005 *ts = dev_get_drvdata(dev); ++ u16 temp_high; ++ u16 temp_high_orig; ++ u16 temp_high_test; ++ unsigned int result; ++ ++ if (!ts->set_reset) { ++ dev_warn(&ts->spi->dev, ++ "unable to selftest: no reset function\n"); ++ result = 0; ++ goto out; ++ } ++ ++ mutex_lock(&ts->mutex); ++ ++ /* ++ * Test TSC2005 communications via temp high register. ++ */ ++ tsc2005_disable(ts); ++ result = 1; ++ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high_orig); ++ temp_high_test = (temp_high_orig - 1) & MAX_12BIT; ++ 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) { ++ dev_warn(dev, "selftest failed: %d != %d\n", ++ temp_high, temp_high_test); ++ result = 0; ++ } ++ ++ /* hardware reset */ ++ ts->set_reset(0); ++ msleep(1); /* only 10us required */ ++ ts->set_reset(1); ++ tsc2005_enable(ts); ++ ++ /* test that the reset really happened */ ++ tsc2005_read(ts, TSC2005_REG_TEMP_HIGH, &temp_high); ++ if (temp_high != temp_high_orig) { ++ dev_warn(dev, "selftest failed after reset: %d != %d\n", ++ temp_high, temp_high_orig); ++ result = 0; ++ } ++ ++ mutex_unlock(&ts->mutex); ++ ++out: ++ return sprintf(buf, "%u\n", result); ++} ++static DEVICE_ATTR(selftest, S_IRUGO, tsc2005_selftest_show, NULL); ++ ++static void tsc2005_esd_timer(unsigned long data) ++{ ++ struct tsc2005 *ts = (struct tsc2005 *)data; ++ ++ schedule_work(&ts->esd_work); ++} ++ ++static void tsc2005_esd_work(struct work_struct *work) ++{ ++ struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work); ++ u16 r; ++ ++ mutex_lock(&ts->mutex); ++ ++ 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. ++ */ ++ tsc2005_read(ts, TSC2005_REG_CFR0, &r); ++ if ((r ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK) { ++ dev_info(&ts->spi->dev, "TSC2005 not responding - resetting\n"); ++ ts->set_reset(0); ++ msleep(1); /* only 10us required */ ++ ts->set_reset(1); ++ tsc2005_start_scan(ts); ++ } ++ ++ /* re-arm the watchdog */ ++ mod_timer(&ts->esd_timer, ++ round_jiffies(jiffies + msecs_to_jiffies(ts->esd_timeout))); ++ ++out: ++ mutex_unlock(&ts->mutex); ++} ++ ++static void __devinit tsc2005_setup_spi_xfer(struct tsc2005 *ts) ++{ ++ tsc2005_setup_read(&ts->spi_x, TSC2005_REG_X, 0); ++ tsc2005_setup_read(&ts->spi_y, TSC2005_REG_Y, 0); ++ tsc2005_setup_read(&ts->spi_z1, TSC2005_REG_Z1, 0); ++ tsc2005_setup_read(&ts->spi_z2, TSC2005_REG_Z2, 1); ++ ++ spi_message_init(&ts->spi_read_msg); ++ spi_message_add_tail(&ts->spi_x.spi_xfer, &ts->spi_read_msg); ++ spi_message_add_tail(&ts->spi_y.spi_xfer, &ts->spi_read_msg); ++ spi_message_add_tail(&ts->spi_z1.spi_xfer, &ts->spi_read_msg); ++ spi_message_add_tail(&ts->spi_z2.spi_xfer, &ts->spi_read_msg); ++} ++ ++static struct attribute *tsc2005_attrs[] = { ++ &dev_attr_disable.attr, ++ &dev_attr_selftest.attr, ++ NULL ++}; ++ ++static struct attribute_group tsc2005_attr_group = { ++ .attrs = tsc2005_attrs, ++}; ++ ++static int __devinit tsc2005_setup(struct tsc2005 *ts, ++ struct tsc2005_platform_data *pdata) ++{ ++ int r; ++ int fudge_x; ++ int fudge_y; ++ int fudge_p; ++ int p_max; ++ int x_max; ++ int y_max; ++ ++ mutex_init(&ts->mutex); ++ ++ tsc2005_setup_spi_xfer(ts); ++ ++ init_timer(&ts->penup_timer); ++ setup_timer(&ts->penup_timer, tsc2005_penup_timer, (unsigned long)ts); ++ INIT_WORK(&ts->penup_work, tsc2005_penup_work); ++ ++ fudge_x = pdata->ts_x_fudge ? : 0; ++ fudge_y = pdata->ts_y_fudge ? : 0; ++ fudge_p = pdata->ts_pressure_fudge ? : 0; ++ x_max = pdata->ts_x_max ? : MAX_12BIT; ++ y_max = pdata->ts_y_max ? : MAX_12BIT; ++ p_max = pdata->ts_pressure_max ? : MAX_12BIT; ++ ts->x_plate_ohm = pdata->ts_x_plate_ohm ? : 0; ++ ts->esd_timeout = pdata->esd_timeout_ms; ++ ts->set_reset = pdata->set_reset; ++ ++ ts->idev = input_allocate_device(); ++ if (ts->idev == NULL) ++ return -ENOMEM; ++ ts->idev->name = "TSC2005 touchscreen"; ++ snprintf(ts->phys, sizeof(ts->phys), "%s/input-ts", ++ dev_name(&ts->spi->dev)); ++ ts->idev->phys = ts->phys; ++ ts->idev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY); ++ ts->idev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE); ++ ts->idev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); ++ ++ input_set_abs_params(ts->idev, ABS_X, 0, x_max, fudge_x, 0); ++ input_set_abs_params(ts->idev, ABS_Y, 0, y_max, fudge_y, 0); ++ input_set_abs_params(ts->idev, ABS_PRESSURE, 0, p_max, fudge_p, 0); ++ ++ r = request_threaded_irq(ts->spi->irq, tsc2005_irq_handler, ++ tsc2005_irq_thread, IRQF_TRIGGER_RISING, ++ "tsc2005", ts); ++ if (r) { ++ dev_err(&ts->spi->dev, "request_threaded_irq(): %d\n", r); ++ goto err1; ++ } ++ set_irq_wake(ts->spi->irq, 1); ++ ++ r = input_register_device(ts->idev); ++ if (r) { ++ dev_err(&ts->spi->dev, "input_register_device(): %d\n", r); ++ goto err2; ++ } ++ ++ r = sysfs_create_group(&ts->spi->dev.kobj, &tsc2005_attr_group); ++ if (r) ++ dev_warn(&ts->spi->dev, "sysfs entry creation failed: %d\n", r); ++ ++ tsc2005_start_scan(ts); ++ ++ if (!ts->esd_timeout || !ts->set_reset) ++ goto done; ++ ++ /* start the optional ESD watchdog */ ++ setup_timer(&ts->esd_timer, tsc2005_esd_timer, (unsigned long)ts); ++ INIT_WORK(&ts->esd_work, tsc2005_esd_work); ++ mod_timer(&ts->esd_timer, ++ round_jiffies(jiffies + msecs_to_jiffies(ts->esd_timeout))); ++ ++done: ++ return 0; ++ ++err2: ++ free_irq(ts->spi->irq, ts); ++ ++err1: ++ input_free_device(ts->idev); ++ return r; ++} ++ ++static int __devinit tsc2005_probe(struct spi_device *spi) ++{ ++ struct tsc2005_platform_data *pdata = spi->dev.platform_data; ++ struct tsc2005 *ts; ++ 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; ++ if (!spi->max_speed_hz) ++ spi->max_speed_hz = TSC2005_SPI_MAX_SPEED_HZ; ++ spi_setup(spi); ++ ++ r = tsc2005_setup(ts, pdata); ++ if (r) ++ 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); ++ ++ if (ts->esd_timeout) ++ del_timer_sync(&ts->esd_timer); ++ del_timer_sync(&ts->penup_timer); ++ ++ flush_work(&ts->esd_work); ++ flush_work(&ts->penup_work); ++ ++ sysfs_remove_group(&ts->spi->dev.kobj, &tsc2005_attr_group); ++ free_irq(ts->spi->irq, ts); ++ input_unregister_device(ts->idev); ++ 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"); +diff --git a/include/linux/spi/tsc2005.h b/include/linux/spi/tsc2005.h +new file mode 100644 +index 0000000..d9b0c84 +--- /dev/null ++++ b/include/linux/spi/tsc2005.h +@@ -0,0 +1,41 @@ ++/* ++ * This file is part of TSC2005 touchscreen driver ++ * ++ * Copyright (C) 2009-2010 Nokia Corporation ++ * ++ * Contact: Aaro Koskinen <aaro.koskinen@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 ++ * ++ */ ++ ++#ifndef _LINUX_SPI_TSC2005_H ++#define _LINUX_SPI_TSC2005_H ++ ++#include <linux/types.h> ++ ++struct tsc2005_platform_data { ++ int ts_pressure_max; ++ int ts_pressure_fudge; ++ int ts_x_max; ++ int ts_x_fudge; ++ int ts_y_max; ++ int ts_y_fudge; ++ int ts_x_plate_ohm; ++ unsigned int esd_timeout_ms; ++ void (*set_reset)(bool enable); ++}; ++ ++#endif +-- +1.6.0.4 + |