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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.patch804
1 files changed, 0 insertions, 804 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
deleted file mode 100644
index 41de3db5c..000000000
--- a/meta-moblin/packages/linux/linux-moblin-2.6.33.2/linux-2.6.35-input-touchscreen-introduce-tsc2005-driver.patch
+++ /dev/null
@@ -1,804 +0,0 @@
-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
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-05 17:11:33 +0000