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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-06-06 03:05:59 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-06-06 06:34:16 +0300 |
| commit | 83b41248ed04ac64a3aafc47be2b25bc1509e2f9 (patch) | |
| tree | ffe749ee1413a8ea1bcc98868ce45b66ed2d6663 /drivers/input/touchscreen | |
| parent | 4e5220cb8e4bb8f0368e7a123c48ceb6b2f4a56d (diff) | |
| download | linux-83b41248ed04ac64a3aafc47be2b25bc1509e2f9.tar.xz | |
Input: cy8ctmg110_ts - switch to using gpiod API
Instead of legacy gpio API let's use newer gpiod API. This also allows us
to get rid of platform data.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210603043726.3793876-7-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
| -rw-r--r-- | drivers/input/touchscreen/cy8ctmg110_ts.c | 45 |
1 files changed, 18 insertions, 27 deletions
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c index 33ccb31cad52..495ef156cf43 100644 --- a/drivers/input/touchscreen/cy8ctmg110_ts.c +++ b/drivers/input/touchscreen/cy8ctmg110_ts.c @@ -7,15 +7,13 @@ * Some cleanups by Alan Cox <alan@linux.intel.com> */ -#include <linux/module.h> -#include <linux/kernel.h> +#include <linux/i2c.h> #include <linux/input.h> -#include <linux/slab.h> #include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/i2c.h> -#include <linux/gpio.h> -#include <linux/input/cy8ctmg110_pdata.h> +#include <linux/gpio/consumer.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> #include <asm/byteorder.h> #define CY8CTMG110_DRIVER_NAME "cy8ctmg110" @@ -46,17 +44,18 @@ struct cy8ctmg110 { struct input_dev *input; char phys[32]; struct i2c_client *client; - int reset_pin; + struct gpio_desc *reset_gpio; }; /* * cy8ctmg110_power is the routine that is called when touch hardware - * will powered off or on. + * is being powered off or on. When powering on this routine de-asserts + * the RESET line, when powering off reset line is asserted. */ static void cy8ctmg110_power(struct cy8ctmg110 *ts, bool poweron) { - if (ts->reset_pin) - gpio_direction_output(ts->reset_pin, 1 - poweron); + if (ts->reset_gpio) + gpiod_set_value_cansleep(ts->reset_gpio, !poweron); } static int cy8ctmg110_write_regs(struct cy8ctmg110 *tsc, unsigned char reg, @@ -172,17 +171,10 @@ static void cy8ctmg110_shut_off(void *_ts) static int cy8ctmg110_probe(struct i2c_client *client, const struct i2c_device_id *id) { - const struct cy8ctmg110_pdata *pdata = dev_get_platdata(&client->dev); struct cy8ctmg110 *ts; struct input_dev *input_dev; int err; - /* No pdata no way forward */ - if (pdata == NULL) { - dev_err(&client->dev, "no pdata\n"); - return -ENODEV; - } - if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_WORD_DATA)) return -EIO; @@ -197,7 +189,6 @@ static int cy8ctmg110_probe(struct i2c_client *client, ts->client = client; ts->input = input_dev; - ts->reset_pin = pdata->reset_pin; snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&client->dev)); @@ -212,14 +203,14 @@ static int cy8ctmg110_probe(struct i2c_client *client, input_set_abs_params(input_dev, ABS_Y, CY8CTMG110_Y_MIN, CY8CTMG110_Y_MAX, 4, 0); - if (ts->reset_pin) { - err = devm_gpio_request(&client->dev, ts->reset_pin, NULL); - if (err) { - dev_err(&client->dev, - "Unable to request GPIO pin %d.\n", - ts->reset_pin); - return err; - } + /* Request and assert reset line */ + ts->reset_gpio = devm_gpiod_get_optional(&client->dev, NULL, + GPIOD_OUT_HIGH); + if (IS_ERR(ts->reset_gpio)) { + err = PTR_ERR(ts->reset_gpio); + dev_err(&client->dev, + "Unable to request reset GPIO: %d\n", err); + return err; } cy8ctmg110_power(ts, true); |