[PATCH v4 08/10] input: keyboard: adp5588-keys: add optional reset gpio
From: Nuno Sá <nuno.sa@analog.com>
Date: 2022-08-29 13:18:17
Also in:
linux-gpio, linux-input, lkml
Subsystem:
adp5588 qwerty keypad and io expander driver (adp5588/adp5587), input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Michael Hennerich, Dmitry Torokhov, Linus Torvalds
Optionally reset the device during probe. Signed-off-by: Nuno Sá <nuno.sa@analog.com> Reviewed-by: Linus Walleij <redacted> Reviewed-by: Andy Shevchenko <redacted> --- drivers/input/keyboard/adp5588-keys.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 3a234ec37fd4..b2bb7c6702e1 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c@@ -11,6 +11,7 @@ #include <linux/bits.h> #include <linux/delay.h> #include <linux/errno.h> +#include <linux/gpio/consumer.h> #include <linux/gpio/driver.h> #include <linux/i2c.h> #include <linux/input.h>
@@ -715,6 +716,7 @@ static int adp5588_probe(struct i2c_client *client, { struct adp5588_kpad *kpad; struct input_dev *input; + struct gpio_desc *gpio; unsigned int revid; int ret; int error;
@@ -740,6 +742,16 @@ static int adp5588_probe(struct i2c_client *client, if (error) return error; + gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + + if (gpio) { + fsleep(30); + gpiod_set_value_cansleep(gpio, 0); + fsleep(60); + } + ret = adp5588_read(client, DEV_ID); if (ret < 0) return ret;
--
2.37.2