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path: root/drivers/input/touchscreen/auo-pixcir-ts.c
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Diffstat (limited to 'drivers/input/touchscreen/auo-pixcir-ts.c')
-rw-r--r--drivers/input/touchscreen/auo-pixcir-ts.c205
1 files changed, 74 insertions, 131 deletions
diff --git a/drivers/input/touchscreen/auo-pixcir-ts.c b/drivers/input/touchscreen/auo-pixcir-ts.c
index d3f9f6b0f9b7..363a4a1f1560 100644
--- a/drivers/input/touchscreen/auo-pixcir-ts.c
+++ b/drivers/input/touchscreen/auo-pixcir-ts.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for AUO in-cell touchscreens
*
@@ -7,19 +8,9 @@
*
* 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/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
@@ -29,10 +20,9 @@
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
-#include <linux/input/auo-pixcir-ts.h>
+#include <linux/gpio/consumer.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
+#include <linux/property.h>
/*
* Coordinate calculation:
@@ -79,6 +69,16 @@
#define AUO_PIXCIR_INT_RELEASE (1 << 4)
#define AUO_PIXCIR_INT_ENABLE (1 << 3)
#define AUO_PIXCIR_INT_POL_HIGH (1 << 2)
+
+/*
+ * Interrupt modes:
+ * periodical: interrupt is asserted periodically
+ * compare coordinates: interrupt is asserted when coordinates change
+ * indicate touch: interrupt is asserted during touch
+ */
+#define AUO_PIXCIR_INT_PERIODICAL 0x00
+#define AUO_PIXCIR_INT_COMP_COORD 0x01
+#define AUO_PIXCIR_INT_TOUCH_IND 0x02
#define AUO_PIXCIR_INT_MODE_MASK 0x03
/*
@@ -113,10 +113,14 @@
struct auo_pixcir_ts {
struct i2c_client *client;
struct input_dev *input;
- const struct auo_pixcir_ts_platdata *pdata;
+ struct gpio_desc *gpio_int;
+ struct gpio_desc *gpio_rst;
char phys[32];
- /* special handling for touch_indicate interupt mode */
+ unsigned int x_max;
+ unsigned int y_max;
+
+ /* special handling for touch_indicate interrupt mode */
bool touch_ind_mode;
wait_queue_head_t wait;
@@ -135,7 +139,6 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
struct auo_point_t *point)
{
struct i2c_client *client = ts->client;
- const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
uint8_t raw_coord[8];
uint8_t raw_area[4];
int i, ret;
@@ -162,8 +165,8 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
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) {
+ if (point[i].coord_x > ts->x_max ||
+ point[i].coord_y > ts->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;
@@ -181,7 +184,6 @@ static int auo_pixcir_collect_data(struct auo_pixcir_ts *ts,
static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
{
struct auo_pixcir_ts *ts = dev_id;
- const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
struct auo_point_t point[AUO_PIXCIR_REPORT_POINTS];
int i;
int ret;
@@ -192,7 +194,7 @@ static irqreturn_t auo_pixcir_interrupt(int irq, void *dev_id)
/* check for up event in touch touch_ind_mode */
if (ts->touch_ind_mode) {
- if (gpio_get_value(pdata->gpio_int) == 0) {
+ if (gpiod_get_value_cansleep(ts->gpio_int) == 0) {
input_mt_sync(ts->input);
input_report_key(ts->input, BTN_TOUCH, 0);
input_sync(ts->input);
@@ -288,11 +290,9 @@ static int auo_pixcir_power_mode(struct auo_pixcir_ts *ts, int mode)
return 0;
}
-static int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
- int int_setting)
+static int auo_pixcir_int_config(struct auo_pixcir_ts *ts, int int_setting)
{
struct i2c_client *client = ts->client;
- const struct auo_pixcir_ts_platdata *pdata = ts->pdata;
int ret;
ret = i2c_smbus_read_byte_data(client, AUO_PIXCIR_REG_INT_SETTING);
@@ -314,7 +314,7 @@ static int auo_pixcir_int_config(struct auo_pixcir_ts *ts,
return ret;
}
- ts->touch_ind_mode = pdata->int_setting == AUO_PIXCIR_INT_TOUCH_IND;
+ ts->touch_ind_mode = int_setting == AUO_PIXCIR_INT_TOUCH_IND;
return 0;
}
@@ -399,13 +399,8 @@ static int auo_pixcir_stop(struct auo_pixcir_ts *ts)
static int auo_pixcir_input_open(struct input_dev *dev)
{
struct auo_pixcir_ts *ts = input_get_drvdata(dev);
- int ret;
-
- ret = auo_pixcir_start(ts);
- if (ret)
- return ret;
- return 0;
+ return auo_pixcir_start(ts);
}
static void auo_pixcir_input_close(struct input_dev *dev)
@@ -413,11 +408,8 @@ static void auo_pixcir_input_close(struct input_dev *dev)
struct auo_pixcir_ts *ts = input_get_drvdata(dev);
auo_pixcir_stop(ts);
-
- return;
}
-#ifdef CONFIG_PM_SLEEP
static int auo_pixcir_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
@@ -432,7 +424,7 @@ static int auo_pixcir_suspend(struct device *dev)
*/
if (device_may_wakeup(&client->dev)) {
/* need to start device if not open, to be wakeup source */
- if (!input->users) {
+ if (!input_device_enabled(input)) {
ret = auo_pixcir_start(ts);
if (ret)
goto unlock;
@@ -440,7 +432,7 @@ static int auo_pixcir_suspend(struct device *dev)
enable_irq_wake(client->irq);
ret = auo_pixcir_power_mode(ts, AUO_PIXCIR_POWER_SLEEP);
- } else if (input->users) {
+ } else if (input_device_enabled(input)) {
ret = auo_pixcir_stop(ts);
}
@@ -463,14 +455,14 @@ static int auo_pixcir_resume(struct device *dev)
disable_irq_wake(client->irq);
/* need to stop device if it was not open on suspend */
- if (!input->users) {
+ if (!input_device_enabled(input)) {
ret = auo_pixcir_stop(ts);
if (ret)
goto unlock;
}
/* device wakes automatically from SLEEP */
- } else if (input->users) {
+ } else if (input_device_enabled(input)) {
ret = auo_pixcir_start(ts);
}
@@ -479,85 +471,25 @@ unlock:
return ret;
}
-#endif
-
-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
+static DEFINE_SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
+ auo_pixcir_suspend, auo_pixcir_resume);
static void auo_pixcir_reset(void *data)
{
struct auo_pixcir_ts *ts = data;
- gpio_set_value(ts->pdata->gpio_rst, 0);
+ gpiod_set_value_cansleep(ts->gpio_rst, 1);
}
-static int auo_pixcir_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int auo_pixcir_probe(struct i2c_client *client)
{
- const struct auo_pixcir_ts_platdata *pdata;
struct auo_pixcir_ts *ts;
struct input_dev *input_dev;
int version;
int error;
- pdata = dev_get_platdata(&client->dev);
- if (!pdata) {
- pdata = auo_pixcir_parse_dt(&client->dev);
- if (IS_ERR(pdata))
- return PTR_ERR(pdata);
- }
-
- ts = devm_kzalloc(&client->dev,
- sizeof(struct auo_pixcir_ts), GFP_KERNEL);
+ ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
if (!ts)
return -ENOMEM;
@@ -567,7 +499,6 @@ static int auo_pixcir_probe(struct i2c_client *client,
return -ENOMEM;
}
- ts->pdata = pdata;
ts->client = client;
ts->input = input_dev;
ts->touch_ind_mode = 0;
@@ -577,6 +508,16 @@ static int auo_pixcir_probe(struct i2c_client *client,
snprintf(ts->phys, sizeof(ts->phys),
"%s/input0", dev_name(&client->dev));
+ if (device_property_read_u32(&client->dev, "x-size", &ts->x_max)) {
+ dev_err(&client->dev, "failed to get x-size property\n");
+ return -EINVAL;
+ }
+
+ if (device_property_read_u32(&client->dev, "y-size", &ts->y_max)) {
+ dev_err(&client->dev, "failed to get y-size property\n");
+ return -EINVAL;
+ }
+
input_dev->name = "AUO-Pixcir touchscreen";
input_dev->phys = ts->phys;
input_dev->id.bustype = BUS_I2C;
@@ -590,42 +531,44 @@ static int auo_pixcir_probe(struct i2c_client *client,
__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);
+ input_set_abs_params(input_dev, ABS_X, 0, ts->x_max, 0, 0);
+ input_set_abs_params(input_dev, ABS_Y, 0, ts->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_POSITION_X, 0, ts->x_max, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_POSITION_Y, 0, ts->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);
- error = devm_gpio_request_one(&client->dev, pdata->gpio_int,
- GPIOF_DIR_IN, "auo_pixcir_ts_int");
+ ts->gpio_int = devm_gpiod_get_index(&client->dev, NULL, 0, GPIOD_IN);
+ error = PTR_ERR_OR_ZERO(ts->gpio_int);
if (error) {
- dev_err(&client->dev, "request of gpio %d failed, %d\n",
- pdata->gpio_int, error);
+ dev_err(&client->dev,
+ "request of int gpio failed: %d\n", error);
return error;
}
- error = devm_gpio_request_one(&client->dev, pdata->gpio_rst,
- GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
- "auo_pixcir_ts_rst");
+ gpiod_set_consumer_name(ts->gpio_int, "auo_pixcir_ts_int");
+
+ /* Take the chip out of reset */
+ ts->gpio_rst = devm_gpiod_get_index(&client->dev, NULL, 1,
+ GPIOD_OUT_LOW);
+ error = PTR_ERR_OR_ZERO(ts->gpio_rst);
if (error) {
- dev_err(&client->dev, "request of gpio %d failed, %d\n",
- pdata->gpio_rst, error);
+ dev_err(&client->dev,
+ "request of reset gpio failed: %d\n", error);
return error;
}
- error = devm_add_action(&client->dev, auo_pixcir_reset, ts);
+ gpiod_set_consumer_name(ts->gpio_rst, "auo_pixcir_ts_rst");
+
+ error = devm_add_action_or_reset(&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;
@@ -641,13 +584,14 @@ static int auo_pixcir_probe(struct i2c_client *client,
dev_info(&client->dev, "firmware version 0x%X\n", version);
- error = auo_pixcir_int_config(ts, pdata->int_setting);
+ /* default to asserting the interrupt when the screen is touched */
+ error = auo_pixcir_int_config(ts, AUO_PIXCIR_INT_TOUCH_IND);
if (error)
return error;
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, auo_pixcir_interrupt,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ IRQF_ONESHOT,
input_dev->name, ts);
if (error) {
dev_err(&client->dev, "irq %d requested failed, %d\n",
@@ -673,13 +617,13 @@ static int auo_pixcir_probe(struct i2c_client *client,
}
static const struct i2c_device_id auo_pixcir_idtable[] = {
- { "auo_pixcir_ts", 0 },
+ { "auo_pixcir_ts" },
{ }
};
MODULE_DEVICE_TABLE(i2c, auo_pixcir_idtable);
#ifdef CONFIG_OF
-static struct of_device_id auo_pixcir_ts_dt_idtable[] = {
+static const struct of_device_id auo_pixcir_ts_dt_idtable[] = {
{ .compatible = "auo,auo_pixcir_ts" },
{},
};
@@ -688,9 +632,8 @@ MODULE_DEVICE_TABLE(of, auo_pixcir_ts_dt_idtable);
static struct i2c_driver auo_pixcir_driver = {
.driver = {
- .owner = THIS_MODULE,
.name = "auo_pixcir_ts",
- .pm = &auo_pixcir_pm_ops,
+ .pm = pm_sleep_ptr(&auo_pixcir_pm_ops),
.of_match_table = of_match_ptr(auo_pixcir_ts_dt_idtable),
},
.probe = auo_pixcir_probe,
generated by cgit (git 2.34.1) at 2025-12-26 21:57:39 +0000