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Richard Purdie31791082006-03-31 02:31:09 -08001/*
2 * LED Triggers Core
3 *
4 * Copyright 2005-2006 Openedhand Ltd.
5 *
6 * Author: Richard Purdie <rpurdie@openedhand.com>
7 *
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.
11 *
12 */
13
Richard Purdie31791082006-03-31 02:31:09 -080014#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/platform_device.h>
17#include <linux/leds.h>
18#include <asm/mach-types.h>
19#include <asm/arch/corgi.h>
20#include <asm/arch/hardware.h>
21#include <asm/arch/pxa-regs.h>
22#include <asm/hardware/scoop.h>
23
24static void corgiled_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
25{
26 if (value)
27 GPSR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
28 else
29 GPCR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
30}
31
32static void corgiled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
33{
34 if (value)
35 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
36 else
37 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
38}
39
40static struct led_classdev corgi_amber_led = {
41 .name = "corgi:amber",
42 .default_trigger = "sharpsl-charge",
43 .brightness_set = corgiled_amber_set,
44};
45
46static struct led_classdev corgi_green_led = {
47 .name = "corgi:green",
48 .default_trigger = "nand-disk",
49 .brightness_set = corgiled_green_set,
50};
51
52#ifdef CONFIG_PM
53static int corgiled_suspend(struct platform_device *dev, pm_message_t state)
54{
55#ifdef CONFIG_LEDS_TRIGGERS
56 if (corgi_amber_led.trigger && strcmp(corgi_amber_led.trigger->name, "sharpsl-charge"))
57#endif
58 led_classdev_suspend(&corgi_amber_led);
59 led_classdev_suspend(&corgi_green_led);
60 return 0;
61}
62
63static int corgiled_resume(struct platform_device *dev)
64{
65 led_classdev_resume(&corgi_amber_led);
66 led_classdev_resume(&corgi_green_led);
67 return 0;
68}
69#endif
70
71static int corgiled_probe(struct platform_device *pdev)
72{
73 int ret;
74
75 ret = led_classdev_register(&pdev->dev, &corgi_amber_led);
76 if (ret < 0)
77 return ret;
78
79 ret = led_classdev_register(&pdev->dev, &corgi_green_led);
80 if (ret < 0)
81 led_classdev_unregister(&corgi_amber_led);
82
83 return ret;
84}
85
86static int corgiled_remove(struct platform_device *pdev)
87{
88 led_classdev_unregister(&corgi_amber_led);
89 led_classdev_unregister(&corgi_green_led);
90 return 0;
91}
92
93static struct platform_driver corgiled_driver = {
94 .probe = corgiled_probe,
95 .remove = corgiled_remove,
96#ifdef CONFIG_PM
97 .suspend = corgiled_suspend,
98 .resume = corgiled_resume,
99#endif
100 .driver = {
101 .name = "corgi-led",
102 },
103};
104
105static int __init corgiled_init(void)
106{
107 return platform_driver_register(&corgiled_driver);
108}
109
110static void __exit corgiled_exit(void)
111{
112 platform_driver_unregister(&corgiled_driver);
113}
114
115module_init(corgiled_init);
116module_exit(corgiled_exit);
117
118MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
119MODULE_DESCRIPTION("Corgi LED driver");
120MODULE_LICENSE("GPL");