2011-12-27 22:21:17 -07:00
|
|
|
/*
|
|
|
|
* Driver for AUO in-cell touchscreens
|
|
|
|
*
|
|
|
|
* Copyright (c) 2011 Heiko Stuebner <heiko@sntech.de>
|
|
|
|
*
|
|
|
|
* loosely based on auo_touch.c from Dell Streak vendor-kernel
|
|
|
|
*
|
|
|
|
* Copyright (c) 2008 QUALCOMM Incorporated.
|
|
|
|
* Copyright (c) 2008 QUALCOMM USA, INC.
|
|
|
|
*
|
|
|
|
*
|
|
|
|
* This software is licensed under the terms of the GNU General Public
|
|
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
|
|
* may be copied, distributed, and modified under those terms.
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/input.h>
|
|
|
|
#include <linux/jiffies.h>
|
|
|
|
#include <linux/i2c.h>
|
|
|
|
#include <linux/mutex.h>
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/gpio.h>
|
|
|
|
#include <linux/input/auo-pixcir-ts.h>
|
2013-02-23 13:08:55 -07:00
|
|
|
#include <linux/of.h>
|
|
|
|
#include <linux/of_gpio.h>
|
2011-12-27 22:21:17 -07:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Coordinate calculation:
|
|
|
|
* X1 = X1_LSB + X1_MSB*256
|
|
|
|
* Y1 = Y1_LSB + Y1_MSB*256
|
|
|
|
* X2 = X2_LSB + X2_MSB*256
|
|
|
|
* Y2 = Y2_LSB + Y2_MSB*256
|
|
|
|
*/
|
|
|
|
#define AUO_PIXCIR_REG_X1_LSB 0x00
|
|
|
|
#define AUO_PIXCIR_REG_X1_MSB 0x01
|
|
|
|
#define AUO_PIXCIR_REG_Y1_LSB 0x02
|
|
|
|
#define AUO_PIXCIR_REG_Y1_MSB 0x03
|
|
|
|
#define AUO_PIXCIR_REG_X2_LSB 0x04
|
|
|
|
#define AUO_PIXCIR_REG_X2_MSB 0x05
|
|
|
|
#define AUO_PIXCIR_REG_Y2_LSB 0x06
|
|
|
|
#define AUO_PIXCIR_REG_Y2_MSB 0x07
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_REG_STRENGTH 0x0d
|
|
|
|
#define AUO_PIXCIR_REG_STRENGTH_X1_LSB 0x0e
|
|
|
|
#define AUO_PIXCIR_REG_STRENGTH_X1_MSB 0x0f
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_REG_RAW_DATA_X 0x2b
|
|
|
|
#define AUO_PIXCIR_REG_RAW_DATA_Y 0x4f
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_REG_X_SENSITIVITY 0x6f
|
|
|
|
#define AUO_PIXCIR_REG_Y_SENSITIVITY 0x70
|
|
|
|
#define AUO_PIXCIR_REG_INT_SETTING 0x71
|
|
|
|
#define AUO_PIXCIR_REG_INT_WIDTH 0x72
|
|
|
|
#define AUO_PIXCIR_REG_POWER_MODE 0x73
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_REG_VERSION 0x77
|
|
|
|
#define AUO_PIXCIR_REG_CALIBRATE 0x78
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_REG_TOUCHAREA_X1 0x1e
|
|
|
|
#define AUO_PIXCIR_REG_TOUCHAREA_Y1 0x1f
|
|
|
|
#define AUO_PIXCIR_REG_TOUCHAREA_X2 0x20
|
|
|
|
#define AUO_PIXCIR_REG_TOUCHAREA_Y2 0x21
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_REG_EEPROM_CALIB_X 0x42
|
|
|
|
#define AUO_PIXCIR_REG_EEPROM_CALIB_Y 0xad
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_INT_TPNUM_MASK 0xe0
|
|
|
|
#define AUO_PIXCIR_INT_TPNUM_SHIFT 5
|
|
|
|
#define AUO_PIXCIR_INT_RELEASE (1 << 4)
|
|
|
|
#define AUO_PIXCIR_INT_ENABLE (1 << 3)
|
|
|
|
#define AUO_PIXCIR_INT_POL_HIGH (1 << 2)
|
|
|
|
#define AUO_PIXCIR_INT_MODE_MASK 0x03
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Power modes:
|
|
|
|
* active: scan speed 60Hz
|
|
|
|
* sleep: scan speed 10Hz can be auto-activated, wakeup on 1st touch
|
|
|
|
* deep sleep: scan speed 1Hz can only be entered or left manually.
|
|
|
|
*/
|
|
|
|
#define AUO_PIXCIR_POWER_ACTIVE 0x00
|
|
|
|
#define AUO_PIXCIR_POWER_SLEEP 0x01
|
|
|
|
#define AUO_PIXCIR_POWER_DEEP_SLEEP 0x02
|
|
|
|
#define AUO_PIXCIR_POWER_MASK 0x03
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_POWER_ALLOW_SLEEP (1 << 2)
|
|
|
|
#define AUO_PIXCIR_POWER_IDLE_TIME(ms) ((ms & 0xf) << 4)
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_CALIBRATE 0x03
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_EEPROM_CALIB_X_LEN 62
|
|
|
|
#define AUO_PIXCIR_EEPROM_CALIB_Y_LEN 36
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_RAW_DATA_X_LEN 18
|
|
|
|
#define AUO_PIXCIR_RAW_DATA_Y_LEN 11
|
|
|
|
|
|
|
|
#define AUO_PIXCIR_STRENGTH_ENABLE (1 << 0)
|
|
|
|
|
|
|
|
/* Touchscreen absolute values */
|
|
|
|
#define AUO_PIXCIR_REPORT_POINTS 2
|
|
|
|
#define AUO_PIXCIR_MAX_AREA 0xff
|
|
|
|
#define AUO_PIXCIR_PENUP_TIMEOUT_MS 10
|
|
|
|
|
|
|
|
struct auo_pixcir_ts {
|
|
|
|
struct i2c_client *client;
|
|
|
|
struct input_dev *input;
|
2013-02-23 13:06:48 -07:00
|
|
|
const struct auo_pixcir_ts_platdata *pdata;
|
2011-12-27 22:21:17 -07:00
|
|
|
char phys[32];
|
|
|
|
|
|
|
|
/* special handling for touch_indicate interupt mode */
|
|
|
|
bool touch_ind_mode;
|
|
|
|
|
|
|
|
wait_queue_head_t wait;
|
|
|
|
bool stopped;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct auo_point_t {
|
|
|
|
int coord_x;
|
|
|
|
int coord_y;
|
|
|
|
int area_major;
|
|
|
|
int area_minor;
|
|
|
|
int orientation;
|
|
|
|
};
|
|
|
|
|
|
|
|
static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
|
|
|
|
struct auo_point_t *point)
|
|
|
|
{
|
|
|
|
struct i2c_client *client = ts->client;
|
2013-02-23 13:06:48 -07:00
|
|
|
const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
|
2011-12-27 22:21:17 -07:00
|
|
|
uint8_t raw_coord[8];
|
|
|
|
uint8_t raw_area[4];
|
|
|
|
int i, ret;
|
|
|
|
|
|
|
|
/* touch coordinates */
|
|
|
|
ret = i2c_smbus_read_i2c_block_data(client, AUO_PIXCIR_REG_X1_LSB,
|
|
|
|
8, raw_coord);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "failed to read coordinate, %d\n", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* touch area */
|
|
|
|
ret = i2c_smbus_read_i2c_block_data(client, AUO_PIXCIR_REG_TOUCHAREA_X1,
|
|
|
|
4, raw_area);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "could not read touch area, %d\n", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) {
|
|
|
|
point[i].coord_x =
|
|
|
|
raw_coord[4 * i + 1] << 8 | raw_coord[4 * i];
|
|
|
|
point[i].coord_y =
|
|
|
|
raw_coord[4 * i + 3] << 8 | raw_coord[4 * i + 2];
|
|
|
|
|
|
|
|
if (point[i].coord_x > pdata->x_max ||
|
|
|
|
point[i].coord_y > pdata->y_max) {
|
|
|
|
dev_warn(&client->dev, "coordinates (%d,%d) invalid\n",
|
|
|
|
point[i].coord_x, point[i].coord_y);
|
|
|
|
point[i].coord_x = point[i].coord_y = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* determine touch major, minor and orientation */
|
|
|
|
point[i].area_major = max(raw_area[2 * i], raw_area[2 * i + 1]);
|
|
|
|
point[i].area_minor = min(raw_area[2 * i], raw_area[2 * i + 1]);
|
|
|
|
point[i].orientation = raw_area[2 * i] > raw_area[2 * i + 1];
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
|
|
|
|
{
|
|
|
|
struct auo_pixcir_ts *ts = dev_id;
|
2013-02-23 13:06:48 -07:00
|
|
|
const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
|
2011-12-27 22:21:17 -07:00
|
|
|
struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS];
|
|
|
|
int i;
|
|
|
|
int ret;
|
|
|
|
int fingers = 0;
|
|
|
|
int abs = -1;
|
|
|
|
|
|
|
|
while (!ts->stopped) {
|
|
|
|
|
|
|
|
/* check for up event in touch touch_ind_mode */
|
|
|
|
if (ts->touch_ind_mode) {
|
|
|
|
if (gpio_get_value(pdata->gpio_int) == 0) {
|
|
|
|
input_mt_sync(ts->input);
|
|
|
|
input_report_key(ts->input, BTN_TOUCH, 0);
|
|
|
|
input_sync(ts->input);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = auo_pixcir_collect_data(ts, point);
|
|
|
|
if (ret < 0) {
|
|
|
|
/* we want to loop only in touch_ind_mode */
|
|
|
|
if (!ts->touch_ind_mode)
|
|
|
|
break;
|
|
|
|
|
|
|
|
wait_event_timeout(ts->wait, ts->stopped,
|
|
|
|
msecs_to_jiffies(AUO_PIXCIR_PENUP_TIMEOUT_MS));
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < AUO_PIXCIR_REPORT_POINTS; i++) {
|
|
|
|
if (point[i].coord_x > 0 || point[i].coord_y > 0) {
|
|
|
|
input_report_abs(ts->input, ABS_MT_POSITION_X,
|
|
|
|
point[i].coord_x);
|
|
|
|
input_report_abs(ts->input, ABS_MT_POSITION_Y,
|
|
|
|
point[i].coord_y);
|
|
|
|
input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR,
|
|
|
|
point[i].area_major);
|
|
|
|
input_report_abs(ts->input, ABS_MT_TOUCH_MINOR,
|
|
|
|
point[i].area_minor);
|
|
|
|
input_report_abs(ts->input, ABS_MT_ORIENTATION,
|
|
|
|
point[i].orientation);
|
|
|
|
input_mt_sync(ts->input);
|
|
|
|
|
|
|
|
/* use first finger as source for singletouch */
|
|
|
|
if (fingers == 0)
|
|
|
|
abs = i;
|
|
|
|
|
|
|
|
/* number of touch points could also be queried
|
|
|
|
* via i2c but would require an additional call
|
|
|
|
*/
|
|
|
|
fingers++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
input_report_key(ts->input, BTN_TOUCH, fingers > 0);
|
|
|
|
|
|
|
|
if (abs > -1) {
|
|
|
|
input_report_abs(ts->input, ABS_X, point[abs].coord_x);
|
|
|
|
input_report_abs(ts->input, ABS_Y, point[abs].coord_y);
|
|
|
|
}
|
|
|
|
|
|
|
|
input_sync(ts->input);
|
|
|
|
|
|
|
|
/* we want to loop only in touch_ind_mode */
|
|
|
|
if (!ts->touch_ind_mode)
|
|
|
|
break;
|
|
|
|
|
|
|
|
wait_event_timeout(ts->wait, ts->stopped,
|
|
|
|
msecs_to_jiffies(AUO_PIXCIR_PENUP_TIMEOUT_MS));
|
|
|
|
}
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set the power mode of the device.
|
|
|
|
* Valid modes are
|
|
|
|
* - AUO_PIXCIR_POWER_ACTIVE
|
|
|
|
* - AUO_PIXCIR_POWER_SLEEP - automatically left on first touch
|
|
|
|
* - AUO_PIXCIR_POWER_DEEP_SLEEP
|
|
|
|
*/
|
|
|
|
static int auo_pixcir_power_mode(struct auo_pixcir_ts *ts, int mode)
|
|
|
|
{
|
|
|
|
struct i2c_client *client = ts->client;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_POWER_MODE);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "unable to read reg %Xh, %d\n",
|
|
|
|
AUO_PIXCIR_REG_POWER_MODE, ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret &= ~AUO_PIXCIR_POWER_MASK;
|
|
|
|
ret |= mode;
|
|
|
|
|
|
|
|
ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_POWER_MODE, ret);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&client->dev, "unable to write reg %Xh, %d\n",
|
|
|
|
AUO_PIXCIR_REG_POWER_MODE, ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-11-23 22:38:25 -07:00
|
|
|
static int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
|
2011-12-27 22:21:17 -07:00
|
|
|
int int_setting)
|
|
|
|
{
|
|
|
|
struct i2c_client *client = ts->client;
|
2013-02-23 13:06:48 -07:00
|
|
|
const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
|
2011-12-27 22:21:17 -07:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "unable to read reg %Xh, %d\n",
|
|
|
|
AUO_PIXCIR_REG_INT_SETTING, ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret &= ~AUO_PIXCIR_INT_MODE_MASK;
|
|
|
|
ret |= int_setting;
|
|
|
|
ret |= AUO_PIXCIR_INT_POL_HIGH; /* always use high for interrupts */
|
|
|
|
|
|
|
|
ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_INT_SETTING,
|
|
|
|
ret);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "unable to write reg %Xh, %d\n",
|
|
|
|
AUO_PIXCIR_REG_INT_SETTING, ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ts->touch_ind_mode = pdata->int_setting == AUO_PIXCIR_INT_TOUCH_IND;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* control the generation of interrupts on the device side */
|
|
|
|
static int auo_pixcir_int_toggle(struct auo_pixcir_ts *ts, bool enable)
|
|
|
|
{
|
|
|
|
struct i2c_client *client = ts->client;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "unable to read reg %Xh, %d\n",
|
|
|
|
AUO_PIXCIR_REG_INT_SETTING, ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (enable)
|
|
|
|
ret |= AUO_PIXCIR_INT_ENABLE;
|
|
|
|
else
|
|
|
|
ret &= ~AUO_PIXCIR_INT_ENABLE;
|
|
|
|
|
|
|
|
ret = i2c_smbus_write_byte_data(client, AUO_PIXCIR_REG_INT_SETTING,
|
|
|
|
ret);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "unable to write reg %Xh, %d\n",
|
|
|
|
AUO_PIXCIR_REG_INT_SETTING, ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int auo_pixcir_start(struct auo_pixcir_ts *ts)
|
|
|
|
{
|
|
|
|
struct i2c_client *client = ts->client;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_ACTIVE);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "could not set power mode, %d\n",
|
|
|
|
ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ts->stopped = false;
|
|
|
|
mb();
|
|
|
|
enable_irq(client->irq);
|
|
|
|
|
|
|
|
ret = auo_pixcir_int_toggle(ts, 1);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "could not enable interrupt, %d\n",
|
|
|
|
ret);
|
|
|
|
disable_irq(client->irq);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int auo_pixcir_stop(struct auo_pixcir_ts *ts)
|
|
|
|
{
|
|
|
|
struct i2c_client *client = ts->client;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = auo_pixcir_int_toggle(ts, 0);
|
|
|
|
if (ret < 0) {
|
|
|
|
dev_err(&client->dev, "could not disable interrupt, %d\n",
|
|
|
|
ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* disable receiving of interrupts */
|
|
|
|
disable_irq(client->irq);
|
|
|
|
ts->stopped = true;
|
|
|
|
mb();
|
|
|
|
wake_up(&ts->wait);
|
|
|
|
|
|
|
|
return auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_DEEP_SLEEP);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int auo_pixcir_input_open(struct input_dev *dev)
|
|
|
|
{
|
|
|
|
struct auo_pixcir_ts *ts = input_get_drvdata(dev);
|
|
|
|
|
2015-10-02 12:18:59 -06:00
|
|
|
return auo_pixcir_start(ts);
|
2011-12-27 22:21:17 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
static void auo_pixcir_input_close(struct input_dev *dev)
|
|
|
|
{
|
|
|
|
struct auo_pixcir_ts *ts = input_get_drvdata(dev);
|
|
|
|
|
|
|
|
auo_pixcir_stop(ts);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2014-11-02 01:04:14 -06:00
|
|
|
static int __maybe_unused auo_pixcir_suspend(struct device *dev)
|
2011-12-27 22:21:17 -07:00
|
|
|
{
|
|
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
|
|
struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
|
|
|
|
struct input_dev *input = ts->input;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
mutex_lock(&input->mutex);
|
|
|
|
|
|
|
|
/* when configured as wakeup source, device should always wake system
|
|
|
|
* therefore start device if necessary
|
|
|
|
*/
|
|
|
|
if (device_may_wakeup(&client->dev)) {
|
|
|
|
/* need to start device if not open, to be wakeup source */
|
|
|
|
if (!input->users) {
|
|
|
|
ret = auo_pixcir_start(ts);
|
|
|
|
if (ret)
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
enable_irq_wake(client->irq);
|
|
|
|
ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_SLEEP);
|
|
|
|
} else if (input->users) {
|
|
|
|
ret = auo_pixcir_stop(ts);
|
|
|
|
}
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
mutex_unlock(&input->mutex);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2014-11-02 01:04:14 -06:00
|
|
|
static int __maybe_unused auo_pixcir_resume(struct device *dev)
|
2011-12-27 22:21:17 -07:00
|
|
|
{
|
|
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
|
|
struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
|
|
|
|
struct input_dev *input = ts->input;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
mutex_lock(&input->mutex);
|
|
|
|
|
|
|
|
if (device_may_wakeup(&client->dev)) {
|
|
|
|
disable_irq_wake(client->irq);
|
|
|
|
|
|
|
|
/* need to stop device if it was not open on suspend */
|
|
|
|
if (!input->users) {
|
|
|
|
ret = auo_pixcir_stop(ts);
|
|
|
|
if (ret)
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* device wakes automatically from SLEEP */
|
|
|
|
} else if (input->users) {
|
|
|
|
ret = auo_pixcir_start(ts);
|
|
|
|
}
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
mutex_unlock(&input->mutex);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2013-02-23 13:08:55 -07:00
|
|
|
static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
|
|
|
|
auo_pixcir_suspend, auo_pixcir_resume);
|
|
|
|
|
|
|
|
#ifdef CONFIG_OF
|
|
|
|
static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
|
|
|
|
{
|
|
|
|
struct auo_pixcir_ts_platdata *pdata;
|
|
|
|
struct device_node *np = dev->of_node;
|
|
|
|
|
|
|
|
if (!np)
|
|
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
|
|
|
|
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
|
|
|
|
if (!pdata) {
|
|
|
|
dev_err(dev, "failed to allocate platform data\n");
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
pdata->gpio_int = of_get_gpio(np, 0);
|
|
|
|
if (!gpio_is_valid(pdata->gpio_int)) {
|
|
|
|
dev_err(dev, "failed to get interrupt gpio\n");
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
pdata->gpio_rst = of_get_gpio(np, 1);
|
|
|
|
if (!gpio_is_valid(pdata->gpio_rst)) {
|
|
|
|
dev_err(dev, "failed to get reset gpio\n");
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (of_property_read_u32(np, "x-size", &pdata->x_max)) {
|
|
|
|
dev_err(dev, "failed to get x-size property\n");
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (of_property_read_u32(np, "y-size", &pdata->y_max)) {
|
|
|
|
dev_err(dev, "failed to get y-size property\n");
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* default to asserting the interrupt when the screen is touched */
|
|
|
|
pdata->int_setting = AUO_PIXCIR_INT_TOUCH_IND;
|
|
|
|
|
|
|
|
return pdata;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
static struct auo_pixcir_ts_platdata *auo_pixcir_parse_dt(struct device *dev)
|
|
|
|
{
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
}
|
|
|
|
#endif
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
static void auo_pixcir_reset(void *data)
|
|
|
|
{
|
|
|
|
struct auo_pixcir_ts *ts = data;
|
|
|
|
|
|
|
|
gpio_set_value(ts->pdata->gpio_rst, 0);
|
|
|
|
}
|
|
|
|
|
2012-11-23 22:38:25 -07:00
|
|
|
static int auo_pixcir_probe(struct i2c_client *client,
|
2013-02-23 13:18:14 -07:00
|
|
|
const struct i2c_device_id *id)
|
2011-12-27 22:21:17 -07:00
|
|
|
{
|
2013-02-23 13:08:55 -07:00
|
|
|
const struct auo_pixcir_ts_platdata *pdata;
|
2011-12-27 22:21:17 -07:00
|
|
|
struct auo_pixcir_ts *ts;
|
|
|
|
struct input_dev *input_dev;
|
2013-02-23 13:18:14 -07:00
|
|
|
int version;
|
|
|
|
int error;
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:08:55 -07:00
|
|
|
pdata = dev_get_platdata(&client->dev);
|
|
|
|
if (!pdata) {
|
|
|
|
pdata = auo_pixcir_parse_dt(&client->dev);
|
|
|
|
if (IS_ERR(pdata))
|
|
|
|
return PTR_ERR(pdata);
|
|
|
|
}
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
ts = devm_kzalloc(&client->dev,
|
|
|
|
sizeof(struct auo_pixcir_ts), GFP_KERNEL);
|
2011-12-27 22:21:17 -07:00
|
|
|
if (!ts)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
input_dev = devm_input_allocate_device(&client->dev);
|
|
|
|
if (!input_dev) {
|
|
|
|
dev_err(&client->dev, "could not allocate input device\n");
|
|
|
|
return -ENOMEM;
|
2013-02-23 13:06:44 -07:00
|
|
|
}
|
|
|
|
|
2013-02-23 13:06:48 -07:00
|
|
|
ts->pdata = pdata;
|
2011-12-27 22:21:17 -07:00
|
|
|
ts->client = client;
|
2013-02-23 13:18:14 -07:00
|
|
|
ts->input = input_dev;
|
2011-12-27 22:21:17 -07:00
|
|
|
ts->touch_ind_mode = 0;
|
2013-02-23 13:18:14 -07:00
|
|
|
ts->stopped = true;
|
2011-12-27 22:21:17 -07:00
|
|
|
init_waitqueue_head(&ts->wait);
|
|
|
|
|
|
|
|
snprintf(ts->phys, sizeof(ts->phys),
|
|
|
|
"%s/input0", dev_name(&client->dev));
|
|
|
|
|
|
|
|
input_dev->name = "AUO-Pixcir touchscreen";
|
|
|
|
input_dev->phys = ts->phys;
|
|
|
|
input_dev->id.bustype = BUS_I2C;
|
|
|
|
|
|
|
|
input_dev->open = auo_pixcir_input_open;
|
|
|
|
input_dev->close = auo_pixcir_input_close;
|
|
|
|
|
|
|
|
__set_bit(EV_ABS, input_dev->evbit);
|
|
|
|
__set_bit(EV_KEY, input_dev->evbit);
|
|
|
|
|
|
|
|
__set_bit(BTN_TOUCH, input_dev->keybit);
|
|
|
|
|
|
|
|
/* For single touch */
|
|
|
|
input_set_abs_params(input_dev, ABS_X, 0, pdata->x_max, 0, 0);
|
|
|
|
input_set_abs_params(input_dev, ABS_Y, 0, pdata->y_max, 0, 0);
|
|
|
|
|
|
|
|
/* For multi touch */
|
|
|
|
input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0,
|
|
|
|
pdata->x_max, 0, 0);
|
|
|
|
input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0,
|
|
|
|
pdata->y_max, 0, 0);
|
|
|
|
input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0,
|
|
|
|
AUO_PIXCIR_MAX_AREA, 0, 0);
|
|
|
|
input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, 0,
|
|
|
|
AUO_PIXCIR_MAX_AREA, 0, 0);
|
|
|
|
input_set_abs_params(input_dev, ABS_MT_ORIENTATION, 0, 1, 0, 0);
|
|
|
|
|
|
|
|
input_set_drvdata(ts->input, ts);
|
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
error = devm_gpio_request_one(&client->dev, pdata->gpio_int,
|
|
|
|
GPIOF_DIR_IN, "auo_pixcir_ts_int");
|
|
|
|
if (error) {
|
|
|
|
dev_err(&client->dev, "request of gpio %d failed, %d\n",
|
|
|
|
pdata->gpio_int, error);
|
|
|
|
return error;
|
2011-12-27 22:21:17 -07:00
|
|
|
}
|
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
error = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
|
|
|
|
GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
|
|
|
|
"auo_pixcir_ts_rst");
|
|
|
|
if (error) {
|
|
|
|
dev_err(&client->dev, "request of gpio %d failed, %d\n",
|
|
|
|
pdata->gpio_rst, error);
|
|
|
|
return error;
|
2011-12-27 22:21:17 -07:00
|
|
|
}
|
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
error = devm_add_action(&client->dev, auo_pixcir_reset, ts);
|
|
|
|
if (error) {
|
|
|
|
auo_pixcir_reset(ts);
|
|
|
|
dev_err(&client->dev, "failed to register reset action, %d\n",
|
|
|
|
error);
|
|
|
|
return error;
|
|
|
|
}
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
msleep(200);
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
version = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_VERSION);
|
|
|
|
if (version < 0) {
|
|
|
|
error = version;
|
|
|
|
return error;
|
|
|
|
}
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
dev_info(&client->dev, "firmware version 0x%X\n", version);
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
error = auo_pixcir_int_config(ts, pdata->int_setting);
|
|
|
|
if (error)
|
|
|
|
return error;
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
error = devm_request_threaded_irq(&client->dev, client->irq,
|
|
|
|
NULL, auo_pixcir_interrupt,
|
|
|
|
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
|
|
|
|
input_dev->name, ts);
|
|
|
|
if (error) {
|
|
|
|
dev_err(&client->dev, "irq %d requested failed, %d\n",
|
|
|
|
client->irq, error);
|
|
|
|
return error;
|
|
|
|
}
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
/* stop device and put it into deep sleep until it is opened */
|
|
|
|
error = auo_pixcir_stop(ts);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
error = input_register_device(input_dev);
|
|
|
|
if (error) {
|
|
|
|
dev_err(&client->dev, "could not register input device, %d\n",
|
|
|
|
error);
|
|
|
|
return error;
|
|
|
|
}
|
2011-12-27 22:21:17 -07:00
|
|
|
|
2013-02-23 13:18:14 -07:00
|
|
|
i2c_set_clientdata(client, ts);
|
2011-12-27 22:21:17 -07:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct i2c_device_id auo_pixcir_idtable[] = {
|
|
|
|
{ "auo_pixcir_ts", 0 },
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable);
|
|
|
|
|
2013-02-23 13:08:55 -07:00
|
|
|
#ifdef CONFIG_OF
|
2014-05-07 14:05:15 -06:00
|
|
|
static const struct of_device_id auo_pixcir_ts_dt_idtable[] = {
|
2013-02-23 13:08:55 -07:00
|
|
|
{ .compatible = "auo,auo_pixcir_ts" },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
|
|
|
|
#endif
|
|
|
|
|
2011-12-27 22:21:17 -07:00
|
|
|
static struct i2c_driver auo_pixcir_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "auo_pixcir_ts",
|
|
|
|
.pm = &auo_pixcir_pm_ops,
|
2013-02-23 13:08:55 -07:00
|
|
|
.of_match_table = of_match_ptr(auo_pixcir_ts_dt_idtable),
|
2011-12-27 22:21:17 -07:00
|
|
|
},
|
|
|
|
.probe = auo_pixcir_probe,
|
|
|
|
.id_table = auo_pixcir_idtable,
|
|
|
|
};
|
|
|
|
|
2012-03-17 00:05:44 -06:00
|
|
|
module_i2c_driver(auo_pixcir_driver);
|
2011-12-27 22:21:17 -07:00
|
|
|
|
|
|
|
MODULE_DESCRIPTION("AUO-PIXCIR touchscreen driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
|