[PATCH 09/10] input: keyboard: adp5588-keys: add regulator support
From: Nuno Sá <nuno.sa@analog.com>
Date: 2022-07-08 09:34:21
Also in:
linux-gpio, linux-input
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
Support feeding VCC through a regulator. Signed-off-by: Nuno Sá <nuno.sa@analog.com> --- drivers/input/keyboard/adp5588-keys.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 57bc4e52ec21..b4414f5f3cfb 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c@@ -23,6 +23,7 @@ #include <linux/pinctrl/pinconf-generic.h> #include <linux/platform_device.h> #include <linux/pm.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/timekeeping.h>
@@ -698,12 +699,18 @@ static int adp5588_fw_parse(struct adp5588_kpad *kpad) return 0; } +static void adp5588_disable_regulator(void *reg) +{ + regulator_disable(reg); +} + static int adp5588_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct adp5588_kpad *kpad; struct input_dev *input; struct gpio_desc *gpio; + struct regulator *vcc; unsigned int revid; int ret; int error;
@@ -729,6 +736,19 @@ static int adp5588_probe(struct i2c_client *client, if (error) return error; + vcc = devm_regulator_get(&client->dev, "vcc"); + if (IS_ERR(vcc)) + return PTR_ERR(vcc); + + ret = regulator_enable(vcc); + if (ret) + return ret; + + ret = devm_add_action_or_reset(&client->dev, adp5588_disable_regulator, + vcc); + if (ret) + return ret; + gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(gpio)) return PTR_ERR(gpio);
--
2.37.0