ARM: dts: add 'dr_mode' property to hsotg devices for exynos boards
[linux/fpc-iii.git] / drivers / leds / leds-wrap.c
blob1ba3defdd46023ff028969aa46b8a4cd0d42d6f3
1 /*
2 * LEDs driver for PCEngines WRAP
4 * Copyright (C) 2006 Kristian Kielhofner <kris@krisk.org>
6 * Based on leds-net48xx.c
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/leds.h>
17 #include <linux/err.h>
18 #include <linux/io.h>
19 #include <linux/scx200_gpio.h>
20 #include <linux/module.h>
22 #define DRVNAME "wrap-led"
23 #define WRAP_POWER_LED_GPIO 2
24 #define WRAP_ERROR_LED_GPIO 3
25 #define WRAP_EXTRA_LED_GPIO 18
27 static struct platform_device *pdev;
29 static void wrap_power_led_set(struct led_classdev *led_cdev,
30 enum led_brightness value)
32 if (value)
33 scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
34 else
35 scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
38 static void wrap_error_led_set(struct led_classdev *led_cdev,
39 enum led_brightness value)
41 if (value)
42 scx200_gpio_set_low(WRAP_ERROR_LED_GPIO);
43 else
44 scx200_gpio_set_high(WRAP_ERROR_LED_GPIO);
47 static void wrap_extra_led_set(struct led_classdev *led_cdev,
48 enum led_brightness value)
50 if (value)
51 scx200_gpio_set_low(WRAP_EXTRA_LED_GPIO);
52 else
53 scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
56 static struct led_classdev wrap_power_led = {
57 .name = "wrap::power",
58 .brightness_set = wrap_power_led_set,
59 .default_trigger = "default-on",
60 .flags = LED_CORE_SUSPENDRESUME,
63 static struct led_classdev wrap_error_led = {
64 .name = "wrap::error",
65 .brightness_set = wrap_error_led_set,
66 .flags = LED_CORE_SUSPENDRESUME,
69 static struct led_classdev wrap_extra_led = {
70 .name = "wrap::extra",
71 .brightness_set = wrap_extra_led_set,
72 .flags = LED_CORE_SUSPENDRESUME,
75 static int wrap_led_probe(struct platform_device *pdev)
77 int ret;
79 ret = led_classdev_register(&pdev->dev, &wrap_power_led);
80 if (ret < 0)
81 return ret;
83 ret = led_classdev_register(&pdev->dev, &wrap_error_led);
84 if (ret < 0)
85 goto err1;
87 ret = led_classdev_register(&pdev->dev, &wrap_extra_led);
88 if (ret < 0)
89 goto err2;
91 return ret;
93 err2:
94 led_classdev_unregister(&wrap_error_led);
95 err1:
96 led_classdev_unregister(&wrap_power_led);
98 return ret;
101 static int wrap_led_remove(struct platform_device *pdev)
103 led_classdev_unregister(&wrap_power_led);
104 led_classdev_unregister(&wrap_error_led);
105 led_classdev_unregister(&wrap_extra_led);
106 return 0;
109 static struct platform_driver wrap_led_driver = {
110 .probe = wrap_led_probe,
111 .remove = wrap_led_remove,
112 .driver = {
113 .name = DRVNAME,
117 static int __init wrap_led_init(void)
119 int ret;
121 if (!scx200_gpio_present()) {
122 ret = -ENODEV;
123 goto out;
126 ret = platform_driver_register(&wrap_led_driver);
127 if (ret < 0)
128 goto out;
130 pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
131 if (IS_ERR(pdev)) {
132 ret = PTR_ERR(pdev);
133 platform_driver_unregister(&wrap_led_driver);
134 goto out;
137 out:
138 return ret;
141 static void __exit wrap_led_exit(void)
143 platform_device_unregister(pdev);
144 platform_driver_unregister(&wrap_led_driver);
147 module_init(wrap_led_init);
148 module_exit(wrap_led_exit);
150 MODULE_AUTHOR("Kristian Kielhofner <kris@krisk.org>");
151 MODULE_DESCRIPTION("PCEngines WRAP LED driver");
152 MODULE_LICENSE("GPL");