Input: tsc2005 - separate SPI and core functions (6ac24381) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/input/touchscreen/Kconfig

+4 −0

Original line number	Diff line number	Diff line
		@@ -939,10 +939,14 @@ config TOUCHSCREEN_TSC_SERIO
		To compile this driver as a module, choose M here: the
		module will be called tsc40.

		config TOUCHSCREEN_TSC200X_CORE
		tristate

		config TOUCHSCREEN_TSC2005
		tristate "TSC2005 based touchscreens"
		depends on SPI_MASTER
		select REGMAP_SPI
		select TOUCHSCREEN_TSC200X_CORE
		help
		Say Y here if you have a TSC2005 based touchscreen.

drivers/input/touchscreen/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -69,6 +69,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
		obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
		obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
		obj-$(CONFIG_TOUCHSCREEN_TSC_SERIO) += tsc40.o
		obj-$(CONFIG_TOUCHSCREEN_TSC200X_CORE) += tsc200x-core.o
		obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o
		obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o
		obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o

drivers/input/touchscreen/tsc2005.c

+17 −695

Original line number	Diff line number	Diff line
		@@ -2,9 +2,10 @@
		* TSC2005 touchscreen driver
		*
		* Copyright (C) 2006-2010 Nokia Corporation
		* Copyright (C) 2015 QWERTY Embedded Design
		* Copyright (C) 2015 EMAC Inc.
		*
		* Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
		* based on TSC2301 driver by Klaus K. Pedersen <klaus.k.pedersen@nokia.com>
		* Based on original tsc2005.c by Lauri Leukkunen <lauri.leukkunen@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
		@@ -15,176 +16,15 @@
		* 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/input/touchscreen.h>
		#include <linux/interrupt.h>
		#include <linux/delay.h>
		#include <linux/pm.h>
		#include <linux/of.h>
		#include <linux/spi/spi.h>
		#include <linux/spi/tsc2005.h>
		#include <linux/regulator/consumer.h>
		#include <linux/regmap.h>
		#include <linux/gpio/consumer.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 0x01 /* R/W access */
		#define TSC2005_REG_PND0 0x02 /* Power Not Down Control */
		#define TSC2005_REG_X (0x0 << 3)
		#define TSC2005_REG_Y (0x1 << 3)
		#define TSC2005_REG_Z1 (0x2 << 3)
		#define TSC2005_REG_Z2 (0x3 << 3)
		#define TSC2005_REG_AUX (0x4 << 3)
		#define TSC2005_REG_TEMP1 (0x5 << 3)
		#define TSC2005_REG_TEMP2 (0x6 << 3)
		#define TSC2005_REG_STATUS (0x7 << 3)
		#define TSC2005_REG_AUX_HIGH (0x8 << 3)
		#define TSC2005_REG_AUX_LOW (0x9 << 3)
		#define TSC2005_REG_TEMP_HIGH (0xA << 3)
		#define TSC2005_REG_TEMP_LOW (0xB << 3)
		#define TSC2005_REG_CFR0 (0xC << 3)
		#define TSC2005_REG_CFR1 (0xD << 3)
		#define TSC2005_REG_CFR2 (0xE << 3)
		#define TSC2005_REG_CONV_FUNC (0xF << 3)

		/* 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_DEF_X_FUZZ 4
		#define TSC2005_DEF_Y_FUZZ 8
		#define TSC2005_DEF_P_FUZZ 2
		#define TSC2005_DEF_RESISTOR 280

		#define TSC2005_SPI_MAX_SPEED_HZ 10000000
		#define TSC2005_PENUP_TIME_MS 40

		static const struct regmap_range tsc2005_writable_ranges[] = {
		regmap_reg_range(TSC2005_REG_AUX_HIGH, TSC2005_REG_CFR2),
		};

		static const struct regmap_access_table tsc2005_writable_table = {
		.yes_ranges = tsc2005_writable_ranges,
		.n_yes_ranges = ARRAY_SIZE(tsc2005_writable_ranges),
		};

		static struct regmap_config tsc2005_regmap_config = {
		.reg_bits = 8,
		.val_bits = 16,
		.reg_stride = 0x08,
		.max_register = 0x78,
		.read_flag_mask = TSC2005_REG_READ,
		.write_flag_mask = TSC2005_REG_PND0,
		.wr_table = &tsc2005_writable_table,
		.use_single_rw = true,
		};

		struct tsc2005_data {
		u16 x;
		u16 y;
		u16 z1;
		u16 z2;
		} __packed;
		#define TSC2005_DATA_REGS 4

		struct tsc2005 {
		struct spi_device *spi;
		struct regmap *regmap;

		struct input_dev *idev;
		char phys[32];

		struct mutex mutex;

		/* raw copy of previous x,y,z */
		int in_x;
		int in_y;
		int in_z1;
		int in_z2;

		spinlock_t lock;
		struct timer_list penup_timer;

		unsigned int esd_timeout;
		struct delayed_work esd_work;
		unsigned long last_valid_interrupt;

		unsigned int x_plate_ohm;
		#include "tsc200x-core.h"

		bool opened;
		bool suspended;

		bool pen_down;

		struct regulator *vio;

		struct gpio_desc *reset_gpio;
		void (*set_reset)(bool enable);
		};

		static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
		static int tsc2005_cmd(struct device *dev, u8 cmd)
		{
		u8 tx = TSC2005_CMD \| TSC2005_CMD_12BIT \| cmd;
		struct spi_transfer xfer = {
		@@ -193,14 +33,15 @@ static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
		.bits_per_word = 8,
		};
		struct spi_message msg;
		struct spi_device *spi = to_spi_device(dev);
		int error;

		spi_message_init(&msg);
		spi_message_add_tail(&xfer, &msg);

		error = spi_sync(ts->spi, &msg);
		error = spi_sync(spi, &msg);
		if (error) {
		dev_err(&ts->spi->dev, "%s: failed, command: %x, error: %d\n",
		dev_err(dev, "%s: failed, command: %x, spi error: %d\n",
		__func__, cmd, error);
		return error;
		}
		@@ -208,382 +49,10 @@ static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
		return 0;
		}

		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);
		if (!ts->pen_down) {
		input_report_key(ts->idev, BTN_TOUCH, !!pressure);
		ts->pen_down = true;
		}
		} else {
		input_report_abs(ts->idev, ABS_PRESSURE, 0);
		if (ts->pen_down) {
		input_report_key(ts->idev, BTN_TOUCH, 0);
		ts->pen_down = false;
		}
		}
		input_sync(ts->idev);
		dev_dbg(&ts->spi->dev, "point(%4d,%4d), pressure (%4d)\n", x, y,
		pressure);
		}

		static irqreturn_t tsc2005_irq_thread(int irq, void *_ts)
		{
		struct tsc2005 *ts = _ts;
		unsigned long flags;
		unsigned int pressure;
		struct tsc2005_data tsdata;
		int error;

		/* read the coordinates */
		error = regmap_bulk_read(ts->regmap, TSC2005_REG_X, &tsdata,
		TSC2005_DATA_REGS);
		if (unlikely(error))
		goto out;

		/* validate position */
		if (unlikely(tsdata.x > MAX_12BIT \|\| tsdata.y > MAX_12BIT))
		goto out;

		/* Skip reading if the pressure components are out of range */
		if (unlikely(tsdata.z1 == 0 \|\| tsdata.z2 > MAX_12BIT))
		goto out;
		if (unlikely(tsdata.z1 >= tsdata.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 == tsdata.x && ts->in_y == tsdata.y &&
		ts->in_z1 == tsdata.z1 && ts->in_z2 == tsdata.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 = tsdata.x;
		ts->in_y = tsdata.y;
		ts->in_z1 = tsdata.z1;
		ts->in_z2 = tsdata.z2;

		/* Compute touch pressure resistance using equation #1 */
		pressure = tsdata.x * (tsdata.z2 - tsdata.z1) / tsdata.z1;
		pressure = pressure * ts->x_plate_ohm / 4096;
		if (unlikely(pressure > MAX_12BIT))
		goto out;

		spin_lock_irqsave(&ts->lock, flags);

		tsc2005_update_pen_state(ts, tsdata.x, tsdata.y, pressure);
		mod_timer(&ts->penup_timer,
		jiffies + msecs_to_jiffies(TSC2005_PENUP_TIME_MS));

		spin_unlock_irqrestore(&ts->lock, flags);

		ts->last_valid_interrupt = jiffies;
		out:
		return IRQ_HANDLED;
		}

		static void tsc2005_penup_timer(unsigned long data)
		{
		struct tsc2005 ts = (struct tsc2005 )data;
		unsigned long flags;

		spin_lock_irqsave(&ts->lock, flags);
		tsc2005_update_pen_state(ts, 0, 0, 0);
		spin_unlock_irqrestore(&ts->lock, flags);
		}

		static void tsc2005_start_scan(struct tsc2005 *ts)
		{
		regmap_write(ts->regmap, TSC2005_REG_CFR0, TSC2005_CFR0_INITVALUE);
		regmap_write(ts->regmap, TSC2005_REG_CFR1, TSC2005_CFR1_INITVALUE);
		regmap_write(ts->regmap, 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);
		}

		static void tsc2005_set_reset(struct tsc2005 *ts, bool enable)
		{
		if (ts->reset_gpio)
		gpiod_set_value_cansleep(ts->reset_gpio, enable);
		else if (ts->set_reset)
		ts->set_reset(enable);
		}

		/* must be called with ts->mutex held */
		static void __tsc2005_disable(struct tsc2005 *ts)
		{
		tsc2005_stop_scan(ts);

		disable_irq(ts->spi->irq);
		del_timer_sync(&ts->penup_timer);

		cancel_delayed_work_sync(&ts->esd_work);

		enable_irq(ts->spi->irq);
		}

		/* must be called with ts->mutex held */
		static void __tsc2005_enable(struct tsc2005 *ts)
		{
		tsc2005_start_scan(ts);

		if (ts->esd_timeout && (ts->set_reset \|\| ts->reset_gpio)) {
		ts->last_valid_interrupt = jiffies;
		schedule_delayed_work(&ts->esd_work,
		round_jiffies_relative(
		msecs_to_jiffies(ts->esd_timeout)));
		}

		}

		static ssize_t tsc2005_selftest_show(struct device *dev,
		struct device_attribute *attr,
		char *buf)
		{
		struct tsc2005 *ts = dev_get_drvdata(dev);
		unsigned int temp_high;
		unsigned int temp_high_orig;
		unsigned int temp_high_test;
		bool success = true;
		int error;

		mutex_lock(&ts->mutex);

		/*
		* Test TSC2005 communications via temp high register.
		*/
		__tsc2005_disable(ts);

		error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high_orig);
		if (error) {
		dev_warn(dev, "selftest failed: read error %d\n", error);
		success = false;
		goto out;
		}

		temp_high_test = (temp_high_orig - 1) & MAX_12BIT;

		error = regmap_write(ts->regmap, TSC2005_REG_TEMP_HIGH, temp_high_test);
		if (error) {
		dev_warn(dev, "selftest failed: write error %d\n", error);
		success = false;
		goto out;
		}

		error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high);
		if (error) {
		dev_warn(dev, "selftest failed: read error %d after write\n",
		error);
		success = false;
		goto out;
		}

		if (temp_high != temp_high_test) {
		dev_warn(dev, "selftest failed: %d != %d\n",
		temp_high, temp_high_test);
		success = false;
		}

		/* hardware reset */
		tsc2005_set_reset(ts, false);
		usleep_range(100, 500); /* only 10us required */
		tsc2005_set_reset(ts, true);

		if (!success)
		goto out;

		/* test that the reset really happened */
		error = regmap_read(ts->regmap, TSC2005_REG_TEMP_HIGH, &temp_high);
		if (error) {
		dev_warn(dev, "selftest failed: read error %d after reset\n",
		error);
		success = false;
		goto out;
		}

		if (temp_high != temp_high_orig) {
		dev_warn(dev, "selftest failed after reset: %d != %d\n",
		temp_high, temp_high_orig);
		success = false;
		}

		out:
		__tsc2005_enable(ts);
		mutex_unlock(&ts->mutex);

		return sprintf(buf, "%d\n", success);
		}

		static DEVICE_ATTR(selftest, S_IRUGO, tsc2005_selftest_show, NULL);

		static struct attribute *tsc2005_attrs[] = {
		&dev_attr_selftest.attr,
		NULL
		};

		static umode_t tsc2005_attr_is_visible(struct kobject *kobj,
		struct attribute *attr, int n)
		{
		struct device *dev = container_of(kobj, struct device, kobj);
		struct tsc2005 *ts = dev_get_drvdata(dev);
		umode_t mode = attr->mode;

		if (attr == &dev_attr_selftest.attr) {
		if (!ts->set_reset && !ts->reset_gpio)
		mode = 0;
		}

		return mode;
		}

		static const struct attribute_group tsc2005_attr_group = {
		.is_visible = tsc2005_attr_is_visible,
		.attrs = tsc2005_attrs,
		};

		static void tsc2005_esd_work(struct work_struct *work)
		{
		struct tsc2005 *ts = container_of(work, struct tsc2005, esd_work.work);
		int error;
		unsigned int r;

		if (!mutex_trylock(&ts->mutex)) {
		/*
		* If the mutex is taken, it means that disable or enable is in
		* progress. In that case just reschedule the work. If the work
		* is not needed, it will be canceled by disable.
		*/
		goto reschedule;
		}

		if (time_is_after_jiffies(ts->last_valid_interrupt +
		msecs_to_jiffies(ts->esd_timeout)))
		goto out;

		/* We should be able to read register without disabling interrupts. */
		error = regmap_read(ts->regmap, TSC2005_REG_CFR0, &r);
		if (!error &&
		!((r ^ TSC2005_CFR0_INITVALUE) & TSC2005_CFR0_RW_MASK)) {
		goto out;
		}

		/*
		* If we could not read our known value from configuration register 0
		* then we should reset the controller as if from power-up and start
		* scanning again.
		*/
		dev_info(&ts->spi->dev, "TSC2005 not responding - resetting\n");

		disable_irq(ts->spi->irq);
		del_timer_sync(&ts->penup_timer);

		tsc2005_update_pen_state(ts, 0, 0, 0);

		tsc2005_set_reset(ts, false);
		usleep_range(100, 500); /* only 10us required */
		tsc2005_set_reset(ts, true);

		enable_irq(ts->spi->irq);
		tsc2005_start_scan(ts);

		out:
		mutex_unlock(&ts->mutex);
		reschedule:
		/* re-arm the watchdog */
		schedule_delayed_work(&ts->esd_work,
		round_jiffies_relative(
		msecs_to_jiffies(ts->esd_timeout)));
		}

		static int tsc2005_open(struct input_dev *input)
		{
		struct tsc2005 *ts = input_get_drvdata(input);

		mutex_lock(&ts->mutex);

		if (!ts->suspended)
		__tsc2005_enable(ts);

		ts->opened = true;

		mutex_unlock(&ts->mutex);

		return 0;
		}

		static void tsc2005_close(struct input_dev *input)
		{
		struct tsc2005 *ts = input_get_drvdata(input);

		mutex_lock(&ts->mutex);

		if (!ts->suspended)
		__tsc2005_disable(ts);

		ts->opened = false;

		mutex_unlock(&ts->mutex);
		}

		static int tsc2005_probe(struct spi_device *spi)
		{
		const struct tsc2005_platform_data *pdata = dev_get_platdata(&spi->dev);
		struct device_node *np = spi->dev.of_node;

		struct tsc2005 *ts;
		struct input_dev *input_dev;
		unsigned int max_x = MAX_12BIT;
		unsigned int max_y = MAX_12BIT;
		unsigned int max_p = MAX_12BIT;
		unsigned int fudge_x = TSC2005_DEF_X_FUZZ;
		unsigned int fudge_y = TSC2005_DEF_Y_FUZZ;
		unsigned int fudge_p = TSC2005_DEF_P_FUZZ;
		unsigned int x_plate_ohm = TSC2005_DEF_RESISTOR;
		unsigned int esd_timeout;
		int error;

		if (!np && !pdata) {
		dev_err(&spi->dev, "no platform data\n");
		return -ENODEV;
		}

		if (spi->irq <= 0) {
		dev_err(&spi->dev, "no irq\n");
		return -ENODEV;
		}

		if (pdata) {
		fudge_x = pdata->ts_x_fudge;
		fudge_y = pdata->ts_y_fudge;
		fudge_p = pdata->ts_pressure_fudge;
		max_x = pdata->ts_x_max;
		max_y = pdata->ts_y_max;
		max_p = pdata->ts_pressure_max;
		x_plate_ohm = pdata->ts_x_plate_ohm;
		esd_timeout = pdata->esd_timeout_ms;
		} else {
		x_plate_ohm = TSC2005_DEF_RESISTOR;
		of_property_read_u32(np, "ti,x-plate-ohms", &x_plate_ohm);
		esd_timeout = 0;
		of_property_read_u32(np, "ti,esd-recovery-timeout-ms",
		&esd_timeout);
		}

		spi->mode = SPI_MODE_0;
		spi->bits_per_word = 8;
		if (!spi->max_speed_hz)
		@@ -593,175 +62,28 @@ static int tsc2005_probe(struct spi_device *spi)
		if (error)
		return error;

		ts = devm_kzalloc(&spi->dev, sizeof(*ts), GFP_KERNEL);
		if (!ts)
		return -ENOMEM;

		input_dev = devm_input_allocate_device(&spi->dev);
		if (!input_dev)
		return -ENOMEM;

		ts->spi = spi;
		ts->idev = input_dev;

		ts->regmap = devm_regmap_init_spi(spi, &tsc2005_regmap_config);
		if (IS_ERR(ts->regmap))
		return PTR_ERR(ts->regmap);

		ts->x_plate_ohm = x_plate_ohm;
		ts->esd_timeout = esd_timeout;

		ts->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset",
		GPIOD_OUT_HIGH);
		if (IS_ERR(ts->reset_gpio)) {
		error = PTR_ERR(ts->reset_gpio);
		dev_err(&spi->dev, "error acquiring reset gpio: %d\n", error);
		return error;
		}

		ts->vio = devm_regulator_get_optional(&spi->dev, "vio");
		if (IS_ERR(ts->vio)) {
		error = PTR_ERR(ts->vio);
		dev_err(&spi->dev, "vio regulator missing (%d)", error);
		return error;
		}

		if (!ts->reset_gpio && pdata)
		ts->set_reset = pdata->set_reset;

		mutex_init(&ts->mutex);

		spin_lock_init(&ts->lock);
		setup_timer(&ts->penup_timer, tsc2005_penup_timer, (unsigned long)ts);

		INIT_DELAYED_WORK(&ts->esd_work, tsc2005_esd_work);

		snprintf(ts->phys, sizeof(ts->phys),
		"%s/input-ts", dev_name(&spi->dev));

		input_dev->name = "TSC2005 touchscreen";
		input_dev->phys = ts->phys;
		input_dev->id.bustype = BUS_SPI;
		input_dev->dev.parent = &spi->dev;
		input_dev->evbit[0] = BIT(EV_ABS) \| BIT(EV_KEY);
		input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);

		input_set_abs_params(input_dev, ABS_X, 0, max_x, fudge_x, 0);
		input_set_abs_params(input_dev, ABS_Y, 0, max_y, fudge_y, 0);
		input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0);

		if (np)
		touchscreen_parse_properties(input_dev, false);

		input_dev->open = tsc2005_open;
		input_dev->close = tsc2005_close;

		input_set_drvdata(input_dev, ts);

		/* Ensure the touchscreen is off */
		tsc2005_stop_scan(ts);

		error = devm_request_threaded_irq(&spi->dev, spi->irq, NULL,
		tsc2005_irq_thread,
		IRQF_TRIGGER_RISING \| IRQF_ONESHOT,
		"tsc2005", ts);
		if (error) {
		dev_err(&spi->dev, "Failed to request irq, err: %d\n", error);
		return error;
		}

		/* enable regulator for DT */
		if (ts->vio) {
		error = regulator_enable(ts->vio);
		if (error)
		return error;
		}

		dev_set_drvdata(&spi->dev, ts);
		error = sysfs_create_group(&spi->dev.kobj, &tsc2005_attr_group);
		if (error) {
		dev_err(&spi->dev,
		"Failed to create sysfs attributes, err: %d\n", error);
		goto disable_regulator;
		}

		error = input_register_device(ts->idev);
		if (error) {
		dev_err(&spi->dev,
		"Failed to register input device, err: %d\n", error);
		goto err_remove_sysfs;
		}

		irq_set_irq_wake(spi->irq, 1);
		return 0;

		err_remove_sysfs:
		sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
		disable_regulator:
		if (ts->vio)
		regulator_disable(ts->vio);
		return error;
		return tsc200x_probe(&spi->dev, spi->irq, BUS_SPI,
		devm_regmap_init_spi(spi, &tsc200x_regmap_config),
		tsc2005_cmd);
		}

		static int tsc2005_remove(struct spi_device *spi)
		{
		struct tsc2005 *ts = dev_get_drvdata(&spi->dev);

		sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);

		if (ts->vio)
		regulator_disable(ts->vio);

		return 0;
		}

		static int __maybe_unused tsc2005_suspend(struct device *dev)
		{
		struct tsc2005 *ts = dev_get_drvdata(dev);

		mutex_lock(&ts->mutex);

		if (!ts->suspended && ts->opened)
		__tsc2005_disable(ts);

		ts->suspended = true;

		mutex_unlock(&ts->mutex);

		return 0;
		}

		static int __maybe_unused tsc2005_resume(struct device *dev)
		{
		struct tsc2005 *ts = dev_get_drvdata(dev);

		mutex_lock(&ts->mutex);

		if (ts->suspended && ts->opened)
		__tsc2005_enable(ts);

		ts->suspended = false;

		mutex_unlock(&ts->mutex);

		return 0;
		return tsc200x_remove(&spi->dev);
		}

		static SIMPLE_DEV_PM_OPS(tsc2005_pm_ops, tsc2005_suspend, tsc2005_resume);

		static struct spi_driver tsc2005_driver = {
		.driver = {
		.name = "tsc2005",
		.owner = THIS_MODULE,
		.pm = &tsc2005_pm_ops,
		.pm = &tsc200x_pm_ops,
		},
		.probe = tsc2005_probe,
		.remove = tsc2005_remove,
		};

		module_spi_driver(tsc2005_driver);

		MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
		MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>");
		MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
		MODULE_LICENSE("GPL");
		MODULE_ALIAS("spi:tsc2005");