mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 05:02:12 +00:00
2d26684a4a
The driver includes machine header for GPIO registers but actually does not use them. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Pavel Machek <pavel@ucw.cz>
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* drivers/leds/leds-s3c24xx.c
|
|
*
|
|
* (c) 2006 Simtec Electronics
|
|
* http://armlinux.simtec.co.uk/
|
|
* Ben Dooks <ben@simtec.co.uk>
|
|
*
|
|
* S3C24XX - LEDs GPIO driver
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_data/leds-s3c24xx.h>
|
|
|
|
/* our context */
|
|
|
|
struct s3c24xx_gpio_led {
|
|
struct led_classdev cdev;
|
|
struct s3c24xx_led_platdata *pdata;
|
|
struct gpio_desc *gpiod;
|
|
};
|
|
|
|
static inline struct s3c24xx_gpio_led *to_gpio(struct led_classdev *led_cdev)
|
|
{
|
|
return container_of(led_cdev, struct s3c24xx_gpio_led, cdev);
|
|
}
|
|
|
|
static void s3c24xx_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
struct s3c24xx_gpio_led *led = to_gpio(led_cdev);
|
|
|
|
gpiod_set_value(led->gpiod, !!value);
|
|
}
|
|
|
|
static int s3c24xx_led_probe(struct platform_device *dev)
|
|
{
|
|
struct s3c24xx_led_platdata *pdata = dev_get_platdata(&dev->dev);
|
|
struct s3c24xx_gpio_led *led;
|
|
int ret;
|
|
|
|
led = devm_kzalloc(&dev->dev, sizeof(struct s3c24xx_gpio_led),
|
|
GFP_KERNEL);
|
|
if (!led)
|
|
return -ENOMEM;
|
|
|
|
led->cdev.brightness_set = s3c24xx_led_set;
|
|
led->cdev.default_trigger = pdata->def_trigger;
|
|
led->cdev.name = pdata->name;
|
|
led->cdev.flags |= LED_CORE_SUSPENDRESUME;
|
|
|
|
led->pdata = pdata;
|
|
|
|
/* Default to off */
|
|
led->gpiod = devm_gpiod_get(&dev->dev, NULL, GPIOD_OUT_LOW);
|
|
if (IS_ERR(led->gpiod))
|
|
return PTR_ERR(led->gpiod);
|
|
|
|
/* register our new led device */
|
|
ret = devm_led_classdev_register(&dev->dev, &led->cdev);
|
|
if (ret < 0)
|
|
dev_err(&dev->dev, "led_classdev_register failed\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct platform_driver s3c24xx_led_driver = {
|
|
.probe = s3c24xx_led_probe,
|
|
.driver = {
|
|
.name = "s3c24xx_led",
|
|
},
|
|
};
|
|
|
|
module_platform_driver(s3c24xx_led_driver);
|
|
|
|
MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
|
|
MODULE_DESCRIPTION("S3C24XX LED driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:s3c24xx_led");
|