1// SPDX-License-Identifier: GPL-2.0-only
 2/* drivers/leds/leds-s3c24xx.c
 3 *
 4 * (c) 2006 Simtec Electronics
 5 *	http://armlinux.simtec.co.uk/
 6 *	Ben Dooks <ben@simtec.co.uk>
 7 *
 8 * S3C24XX - LEDs GPIO driver
 9*/
10
11#include <linux/kernel.h>
12#include <linux/platform_device.h>
13#include <linux/leds.h>
14#include <linux/gpio/consumer.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/platform_data/leds-s3c24xx.h>
18
19/* our context */
20
21struct s3c24xx_gpio_led {
22	struct led_classdev		 cdev;
23	struct s3c24xx_led_platdata	*pdata;
24	struct gpio_desc		*gpiod;
25};
26
27static inline struct s3c24xx_gpio_led *to_gpio(struct led_classdev *led_cdev)
28{
29	return container_of(led_cdev, struct s3c24xx_gpio_led, cdev);
30}
31
32static void s3c24xx_led_set(struct led_classdev *led_cdev,
33			    enum led_brightness value)
34{
35	struct s3c24xx_gpio_led *led = to_gpio(led_cdev);
36
37	gpiod_set_value(led->gpiod, !!value);
38}
39
40static int s3c24xx_led_probe(struct platform_device *dev)
41{
42	struct s3c24xx_led_platdata *pdata = dev_get_platdata(&dev->dev);
43	struct s3c24xx_gpio_led *led;
44	int ret;
45
46	led = devm_kzalloc(&dev->dev, sizeof(struct s3c24xx_gpio_led),
47			   GFP_KERNEL);
48	if (!led)
49		return -ENOMEM;
50
51	led->cdev.brightness_set = s3c24xx_led_set;
52	led->cdev.default_trigger = pdata->def_trigger;
53	led->cdev.name = pdata->name;
54	led->cdev.flags |= LED_CORE_SUSPENDRESUME;
55
56	led->pdata = pdata;
57
58	/* Default to off */
59	led->gpiod = devm_gpiod_get(&dev->dev, NULL, GPIOD_OUT_LOW);
60	if (IS_ERR(led->gpiod))
61		return PTR_ERR(led->gpiod);
62
63	/* register our new led device */
64	ret = devm_led_classdev_register(&dev->dev, &led->cdev);
65	if (ret < 0)
66		dev_err(&dev->dev, "led_classdev_register failed\n");
67
68	return ret;
69}
70
71static struct platform_driver s3c24xx_led_driver = {
72	.probe		= s3c24xx_led_probe,
73	.driver		= {
74		.name		= "s3c24xx_led",
75	},
76};
77
78module_platform_driver(s3c24xx_led_driver);
79
80MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
81MODULE_DESCRIPTION("S3C24XX LED driver");
82MODULE_LICENSE("GPL");
83MODULE_ALIAS("platform:s3c24xx_led");

 1// SPDX-License-Identifier: GPL-2.0-only
 2/* drivers/leds/leds-s3c24xx.c
 3 *
 4 * (c) 2006 Simtec Electronics
 5 *	http://armlinux.simtec.co.uk/
 6 *	Ben Dooks <ben@simtec.co.uk>
 7 *
 8 * S3C24XX - LEDs GPIO driver
 9*/
10
11#include <linux/kernel.h>
12#include <linux/platform_device.h>
13#include <linux/leds.h>
14#include <linux/gpio/consumer.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/platform_data/leds-s3c24xx.h>
18
19/* our context */
20
21struct s3c24xx_gpio_led {
22	struct led_classdev		 cdev;
23	struct s3c24xx_led_platdata	*pdata;
24	struct gpio_desc		*gpiod;
25};
26
27static inline struct s3c24xx_gpio_led *to_gpio(struct led_classdev *led_cdev)
28{
29	return container_of(led_cdev, struct s3c24xx_gpio_led, cdev);
30}
31
32static void s3c24xx_led_set(struct led_classdev *led_cdev,
33			    enum led_brightness value)
34{
35	struct s3c24xx_gpio_led *led = to_gpio(led_cdev);
36
37	gpiod_set_value(led->gpiod, !!value);
38}
39
40static int s3c24xx_led_probe(struct platform_device *dev)
41{
42	struct s3c24xx_led_platdata *pdata = dev_get_platdata(&dev->dev);
43	struct s3c24xx_gpio_led *led;
44	int ret;
45
46	led = devm_kzalloc(&dev->dev, sizeof(struct s3c24xx_gpio_led),
47			   GFP_KERNEL);
48	if (!led)
49		return -ENOMEM;
50
51	led->cdev.brightness_set = s3c24xx_led_set;
52	led->cdev.default_trigger = pdata->def_trigger;
53	led->cdev.name = pdata->name;
54	led->cdev.flags |= LED_CORE_SUSPENDRESUME;
55
56	led->pdata = pdata;
57
58	/* Default to off */
59	led->gpiod = devm_gpiod_get(&dev->dev, NULL, GPIOD_OUT_LOW);
60	if (IS_ERR(led->gpiod))
61		return PTR_ERR(led->gpiod);
62
63	/* register our new led device */
64	ret = devm_led_classdev_register(&dev->dev, &led->cdev);
65	if (ret < 0)
66		dev_err(&dev->dev, "led_classdev_register failed\n");
67
68	return ret;
69}
70
71static struct platform_driver s3c24xx_led_driver = {
72	.probe		= s3c24xx_led_probe,
73	.driver		= {
74		.name		= "s3c24xx_led",
75	},
76};
77
78module_platform_driver(s3c24xx_led_driver);
79
80MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
81MODULE_DESCRIPTION("S3C24XX LED driver");
82MODULE_LICENSE("GPL");
83MODULE_ALIAS("platform:s3c24xx_led");