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Subject[PATCH 1/4] Input: tsc2005 - Separate SPI and core functions
Date
This patch separates the SPI functionality from core functionality
that overlaps with the tsc2004.

Prepares kernel for new tsc2004 driver without much redundant code.

Signed-off-by: Michael Welling <mwelling@ieee.org>
---
drivers/input/touchscreen/Kconfig | 4 +
drivers/input/touchscreen/Makefile | 1 +
drivers/input/touchscreen/tsc2005.c | 709 +--------------------
.../touchscreen/{tsc2005.c => tsc200x-core.c} | 226 ++-----
drivers/input/touchscreen/tsc200x-core.h | 78 +++
5 files changed, 162 insertions(+), 856 deletions(-)
copy drivers/input/touchscreen/{tsc2005.c => tsc200x-core.c} (72%)
create mode 100644 drivers/input/touchscreen/tsc200x-core.h

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 80cc698..6a5878b 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -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.

diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 17435c7..03179f2 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -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
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
index 0f65d02..fc879cf 100644
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -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
@@ -15,192 +16,34 @@
* 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;
+#include "tsc200x-core.h"

- unsigned int esd_timeout;
- struct delayed_work esd_work;
- unsigned long last_valid_interrupt;
-
- unsigned int x_plate_ohm;
-
- 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 = {
- .tx_buf = &tx,
- .len = 1,
- .bits_per_word = 8,
+ .tx_buf = &tx,
+ .len = 1,
+ .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 +51,10 @@ 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)
@@ -593,167 +64,21 @@ 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,
@@ -761,7 +86,7 @@ static struct spi_driver tsc2005_driver = {

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");
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc200x-core.c
similarity index 72%
copy from drivers/input/touchscreen/tsc2005.c
copy to drivers/input/touchscreen/tsc200x-core.c
index 0f65d02..528ad39 100644
--- a/drivers/input/touchscreen/tsc2005.c
+++ b/drivers/input/touchscreen/tsc200x-core.c
@@ -1,7 +1,9 @@
/*
- * TSC2005 touchscreen driver
+ * TSC2004/TSC2005 touchscreen driver core
*
* 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>
@@ -15,11 +17,6 @@
* 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>
@@ -30,11 +27,11 @@
#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>
+#include "tsc200x-core.h"

/*
* The touchscreen interface operates as follows:
@@ -43,7 +40,7 @@
* 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
+ * 5) tsc2005_irq_thread() queues up a 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).
@@ -55,72 +52,6 @@
* 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),
};
@@ -130,7 +61,7 @@ static const struct regmap_access_table tsc2005_writable_table = {
.n_yes_ranges = ARRAY_SIZE(tsc2005_writable_ranges),
};

-static struct regmap_config tsc2005_regmap_config = {
+const struct regmap_config tsc200x_regmap_config = {
.reg_bits = 8,
.val_bits = 16,
.reg_stride = 0x08,
@@ -150,8 +81,9 @@ struct tsc2005_data {
#define TSC2005_DATA_REGS 4

struct tsc2005 {
- struct spi_device *spi;
+ struct device *dev;
struct regmap *regmap;
+ __u16 bustype;

struct input_dev *idev;
char phys[32];
@@ -182,32 +114,10 @@ struct tsc2005 {

struct gpio_desc *reset_gpio;
void (*set_reset)(bool enable);
+ int (*tsc200x_cmd)(struct device *dev, u8 cmd);
+ int irq;
};

-static int tsc2005_cmd(struct tsc2005 *ts, u8 cmd)
-{
- u8 tx = TSC2005_CMD | TSC2005_CMD_12BIT | cmd;
- struct spi_transfer xfer = {
- .tx_buf = &tx,
- .len = 1,
- .bits_per_word = 8,
- };
- struct spi_message msg;
- int error;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
-
- error = spi_sync(ts->spi, &msg);
- if (error) {
- dev_err(&ts->spi->dev, "%s: failed, command: %x, error: %d\n",
- __func__, cmd, error);
- return error;
- }
-
- return 0;
-}
-
static void tsc2005_update_pen_state(struct tsc2005 *ts,
int x, int y, int pressure)
{
@@ -227,7 +137,7 @@ static void tsc2005_update_pen_state(struct tsc2005 *ts,
}
}
input_sync(ts->idev);
- dev_dbg(&ts->spi->dev, "point(%4d,%4d), pressure (%4d)\n", x, y,
+ dev_dbg(ts->dev, "point(%4d,%4d), pressure (%4d)\n", x, y,
pressure);
}

@@ -308,12 +218,12 @@ 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);
+ ts->tsc200x_cmd(ts->dev, TSC2005_CMD_NORMAL);
}

static void tsc2005_stop_scan(struct tsc2005 *ts)
{
- tsc2005_cmd(ts, TSC2005_CMD_STOP);
+ ts->tsc200x_cmd(ts->dev, TSC2005_CMD_STOP);
}

static void tsc2005_set_reset(struct tsc2005 *ts, bool enable)
@@ -329,12 +239,12 @@ static void __tsc2005_disable(struct tsc2005 *ts)
{
tsc2005_stop_scan(ts);

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

cancel_delayed_work_sync(&ts->esd_work);

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

/* must be called with ts->mutex held */
@@ -487,9 +397,9 @@ static void tsc2005_esd_work(struct work_struct *work)
* 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");
+ dev_info(ts->dev, "TSC2005 not responding - resetting\n");

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

tsc2005_update_pen_state(ts, 0, 0, 0);
@@ -498,7 +408,7 @@ static void tsc2005_esd_work(struct work_struct *work)
usleep_range(100, 500); /* only 10us required */
tsc2005_set_reset(ts, true);

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

out:
@@ -540,10 +450,12 @@ static void tsc2005_close(struct input_dev *input)
mutex_unlock(&ts->mutex);
}

-static int tsc2005_probe(struct spi_device *spi)
+int tsc200x_probe(struct device *dev, int irq, __u16 bustype,
+ struct regmap *regmap,
+ int (*tsc200x_cmd)(struct device *dev, u8 cmd))
{
- const struct tsc2005_platform_data *pdata = dev_get_platdata(&spi->dev);
- struct device_node *np = spi->dev.of_node;
+ const struct tsc2005_platform_data *pdata = dev_get_platdata(dev);
+ struct device_node *np = dev->of_node;

struct tsc2005 *ts;
struct input_dev *input_dev;
@@ -558,12 +470,20 @@ static int tsc2005_probe(struct spi_device *spi)
int error;

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

- if (spi->irq <= 0) {
- dev_err(&spi->dev, "no irq\n");
+ if (irq <= 0) {
+ dev_err(dev, "no irq\n");
+ return -ENODEV;
+ }
+
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ if (!tsc200x_cmd) {
+ dev_err(dev, "no cmd function\n");
return -ENODEV;
}

@@ -584,45 +504,33 @@ static int tsc2005_probe(struct spi_device *spi)
&esd_timeout);
}

- spi->mode = SPI_MODE_0;
- spi->bits_per_word = 8;
- if (!spi->max_speed_hz)
- spi->max_speed_hz = TSC2005_SPI_MAX_SPEED_HZ;
-
- error = spi_setup(spi);
- if (error)
- return error;
-
- ts = devm_kzalloc(&spi->dev, sizeof(*ts), GFP_KERNEL);
+ ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL);
if (!ts)
return -ENOMEM;

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

- ts->spi = spi;
+ ts->irq = irq;
+ ts->dev = dev;
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->regmap = regmap;
+ ts->tsc200x_cmd = tsc200x_cmd;
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);
+ ts->reset_gpio = devm_gpiod_get_optional(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);
+ dev_err(dev, "error acquiring reset gpio: %d\n", error);
return error;
}

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

@@ -637,12 +545,12 @@ static int tsc2005_probe(struct spi_device *spi)
INIT_DELAYED_WORK(&ts->esd_work, tsc2005_esd_work);

snprintf(ts->phys, sizeof(ts->phys),
- "%s/input-ts", dev_name(&spi->dev));
+ "%s/input-ts", dev_name(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->id.bustype = bustype;
+ input_dev->dev.parent = dev;
input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY);
input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);

@@ -661,12 +569,12 @@ static int tsc2005_probe(struct spi_device *spi)
/* Ensure the touchscreen is off */
tsc2005_stop_scan(ts);

- error = devm_request_threaded_irq(&spi->dev, spi->irq, NULL,
+ error = devm_request_threaded_irq(dev, 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);
+ dev_err(dev, "Failed to request irq, err: %d\n", error);
return error;
}

@@ -677,43 +585,45 @@ static int tsc2005_probe(struct spi_device *spi)
return error;
}

- dev_set_drvdata(&spi->dev, ts);
- error = sysfs_create_group(&spi->dev.kobj, &tsc2005_attr_group);
+ dev_set_drvdata(dev, ts);
+ error = sysfs_create_group(&dev->kobj, &tsc2005_attr_group);
if (error) {
- dev_err(&spi->dev,
+ dev_err(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,
+ dev_err(dev,
"Failed to register input device, err: %d\n", error);
goto err_remove_sysfs;
}

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

err_remove_sysfs:
- sysfs_remove_group(&spi->dev.kobj, &tsc2005_attr_group);
+ sysfs_remove_group(&dev->kobj, &tsc2005_attr_group);
disable_regulator:
if (ts->vio)
regulator_disable(ts->vio);
return error;
}
+EXPORT_SYMBOL_GPL(tsc200x_probe);

-static int tsc2005_remove(struct spi_device *spi)
+int tsc200x_remove(struct device *dev)
{
- struct tsc2005 *ts = dev_get_drvdata(&spi->dev);
+ struct tsc2005 *ts = dev_get_drvdata(dev);

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

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

return 0;
}
+EXPORT_SYMBOL_GPL(tsc200x_remove);

static int __maybe_unused tsc2005_suspend(struct device *dev)
{
@@ -747,21 +657,9 @@ static int __maybe_unused tsc2005_resume(struct device *dev)
return 0;
}

-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,
- },
- .probe = tsc2005_probe,
- .remove = tsc2005_remove,
-};
-
-module_spi_driver(tsc2005_driver);
+SIMPLE_DEV_PM_OPS(tsc200x_pm_ops, tsc2005_suspend, tsc2005_resume);
+EXPORT_SYMBOL_GPL(tsc200x_pm_ops);

MODULE_AUTHOR("Lauri Leukkunen <lauri.leukkunen@nokia.com>");
MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
MODULE_LICENSE("GPL");
-MODULE_ALIAS("spi:tsc2005");
diff --git a/drivers/input/touchscreen/tsc200x-core.h b/drivers/input/touchscreen/tsc200x-core.h
new file mode 100644
index 0000000..3169078
--- /dev/null
+++ b/drivers/input/touchscreen/tsc200x-core.h
@@ -0,0 +1,78 @@
+#ifndef _TSC200X_CORE_H
+#define _TSC200X_CORE_H
+
+/* 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
+
+extern const struct regmap_config tsc200x_regmap_config;
+extern const struct dev_pm_ops tsc200x_pm_ops;
+
+int tsc200x_probe(struct device *dev, int irq, __u16 bustype,
+ struct regmap *regmap,
+ int (*tsc200x_cmd)(struct device *dev, u8 cmd));
+int tsc200x_remove(struct device *dev);
+
+#endif
--
2.1.4


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