1/*
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
14#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");
121