Typical use to enable/disable is a power switch, so replace these
callbacks to the regulator API. This will allow using devices,
which depends on the regulator, from devicetree.
Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
---
.../devicetree/bindings/input/gpio-keys-polled.txt | 1 +
drivers/input/keyboard/gpio_keys.c | 16 ++++++++++------
drivers/input/keyboard/gpio_keys_polled.c | 16 ++++++++++------
include/linux/gpio_keys.h | 2 --
4 files changed, 21 insertions(+), 14 deletions(-)
diff --git a/Documentation/devicetree/bindings/input/gpio-keys-polled.txt b/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
index 313abef..a210963 100644
--- a/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
+++ b/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
@@ -7,6 +7,7 @@ Required properties:
Optional properties:
- autorepeat: Boolean, Enable auto repeat feature of Linux input
subsystem.
+ - vcc-supply: The regulator to drive the GPIOs.
Each button (key) is represented as a sub-node of "gpio-keys-polled":
Subnode properties:
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 50c2746..659c426 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -30,6 +30,7 @@
#include <linux/of_platform.h>
#include <linux/of_gpio.h>
#include <linux/spinlock.h>
+#include <linux/regulator/consumer.h>
struct gpio_button_data {
const struct gpio_keys_button *button;
@@ -48,6 +49,7 @@ struct gpio_keys_drvdata {
struct input_dev *input;
struct mutex disable_lock;
struct gpio_button_data data[0];
+ struct regulator *regulator;
};
/*
@@ -528,11 +530,10 @@ static void gpio_keys_report_state(struct gpio_keys_drvdata *ddata)
static int gpio_keys_open(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
- const struct gpio_keys_platform_data *pdata = ddata->pdata;
int error;
- if (pdata->enable) {
- error = pdata->enable(input->dev.parent);
+ if (!IS_ERR(ddata->regulator)) {
+ error = regulator_enable(ddata->regulator);
if (error)
return error;
}
@@ -546,10 +547,9 @@ static int gpio_keys_open(struct input_dev *input)
static void gpio_keys_close(struct input_dev *input)
{
struct gpio_keys_drvdata *ddata = input_get_drvdata(input);
- const struct gpio_keys_platform_data *pdata = ddata->pdata;
- if (pdata->disable)
- pdata->disable(input->dev.parent);
+ if (!IS_ERR(ddata->regulator))
+ regulator_disable(ddata->regulator);
}
/*
@@ -683,6 +683,10 @@ static int gpio_keys_probe(struct platform_device *pdev)
return -ENOMEM;
}
+ ddata->regulator = devm_regulator_get(&pdev->dev, "vcc");
+ if (PTR_ERR(ddata->regulator) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
ddata->pdata = pdata;
ddata->input = input;
mutex_init(&ddata->disable_lock);
diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 0dce49d..955a59d 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -28,6 +28,7 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_gpio.h>
+#include <linux/regulator/consumer.h>
#define DRV_NAME "gpio-keys-polled"
@@ -43,6 +44,7 @@ struct gpio_keys_polled_dev {
struct device *dev;
const struct gpio_keys_platform_data *pdata;
struct gpio_keys_button_data data[0];
+ struct regulator *regulator;
};
static void gpio_keys_polled_check_state(struct input_dev *input,
@@ -88,19 +90,17 @@ static void gpio_keys_polled_poll(struct input_polled_dev *dev)
static void gpio_keys_polled_open(struct input_polled_dev *dev)
{
struct gpio_keys_polled_dev *bdev = dev->private;
- const struct gpio_keys_platform_data *pdata = bdev->pdata;
- if (pdata->enable)
- pdata->enable(bdev->dev);
+ if (!IS_ERR(bdev->regulator))
+ WARN_ON(regulator_enable(bdev->regulator));
}
static void gpio_keys_polled_close(struct input_polled_dev *dev)
{
struct gpio_keys_polled_dev *bdev = dev->private;
- const struct gpio_keys_platform_data *pdata = bdev->pdata;
- if (pdata->disable)
- pdata->disable(bdev->dev);
+ if (!IS_ERR(bdev->regulator))
+ regulator_disable(bdev->regulator);
}
#ifdef CONFIG_OF
@@ -227,6 +227,10 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
return -ENOMEM;
}
+ bdev->regulator = devm_regulator_get(&pdev->dev, "vcc");
+ if (PTR_ERR(bdev->regulator) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
poll_dev = input_allocate_polled_device();
if (!poll_dev) {
dev_err(dev, "no memory for polled device\n");
diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h
index a7e977f..05d3bf8 100644
--- a/include/linux/gpio_keys.h
+++ b/include/linux/gpio_keys.h
@@ -23,8 +23,6 @@ struct gpio_keys_platform_data {
unsigned int poll_interval; /* polling interval in msecs -
for polling driver only */
unsigned int rep:1; /* enable input subsystem auto repeat */
- int (*enable)(struct device *dev);
- void (*disable)(struct device *dev);
const char *name; /* input device name */
};
--
1.8.1.5
--
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