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Input: egalax_ts - switch to using gpiod API 

This updates the driver to gpiod API, and removes yet another use of
of_get_named_gpio().

Link: https://lore.kernel.org/r/20220920042608.1865560-3-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2022-09-19 21:26:07 -07:00
parent 413a009fff
commit d19e719da9
1 changed files with 17 additions and 25 deletions
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42
drivers/input/touchscreen/egalax_ts.c
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@ -14,17 +14,17 @@
- auto idle mode support
*/
#include <linux/err.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/bitops.h>
#include <linux/input/mt.h>
#include <linux/of_gpio.h>
/*
* Mouse Mode: some panel may configure the controller to mouse mode,
@ -119,32 +119,26 @@ static irqreturn_t egalax_ts_interrupt(int irq, void *dev_id)
/* wake up controller by an falling edge of interrupt gpio. */
static int egalax_wake_up_device(struct i2c_client *client)
{
struct device_node *np = client->dev.of_node;
int gpio;
struct gpio_desc *gpio;
int ret;
if (!np)
return -ENODEV;
gpio = of_get_named_gpio(np, "wakeup-gpios", 0);
if (!gpio_is_valid(gpio))
return -ENODEV;
ret = gpio_request(gpio, "egalax_irq");
if (ret < 0) {
dev_err(&client->dev,
"request gpio failed, cannot wake up controller: %d\n",
ret);
/* wake up controller via an falling edge on IRQ gpio. */
gpio = gpiod_get(&client->dev, "wakeup", GPIOD_OUT_HIGH);
ret = PTR_ERR_OR_ZERO(gpio);
if (ret) {
if (ret != -EPROBE_DEFER)
dev_err(&client->dev,
"failed to request wakeup gpio, cannot wake up controller: %d\n",
ret);
return ret;
}
/* wake up controller via an falling edge on IRQ gpio. */
gpio_direction_output(gpio, 0);
gpio_set_value(gpio, 1);
/* release the line */
gpiod_set_value_cansleep(gpio, 0);
/* controller should be waken up, return irq. */
gpio_direction_input(gpio);
gpio_free(gpio);
/* controller should be woken up, return irq. */
gpiod_direction_input(gpio);
gpiod_put(gpio);
return 0;
}
@ -185,10 +179,8 @@ static int egalax_ts_probe(struct i2c_client *client,
/* controller may be in sleep, wake it up. */
error = egalax_wake_up_device(client);
if (error) {
dev_err(&client->dev, "Failed to wake up the controller\n");
if (error)
return error;
}
error = egalax_firmware_version(client);
if (error < 0) {