bc2dcd89f63545478fb28093ed3ae739cc931b03
[linux-2.6.git] / drivers / leds / leds-corgi.c
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 <mach/corgi.h>
19 #include <mach/hardware.h>
20 #include <mach/pxa-regs.h>
21 #include <asm/hardware/scoop.h>
22
23 static void corgiled_amber_set(struct led_classdev *led_cdev,
24                                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
32 static void corgiled_green_set(struct led_classdev *led_cdev,
33                                enum led_brightness value)
34 {
35         if (value)
36                 set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
37         else
38                 reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
39 }
40
41 static struct led_classdev corgi_amber_led = {
42         .name                   = "corgi:amber:charge",
43         .default_trigger        = "sharpsl-charge",
44         .brightness_set         = corgiled_amber_set,
45 };
46
47 static struct led_classdev corgi_green_led = {
48         .name                   = "corgi:green:mail",
49         .default_trigger        = "nand-disk",
50         .brightness_set         = corgiled_green_set,
51 };
52
53 #ifdef CONFIG_PM
54 static int corgiled_suspend(struct platform_device *dev, pm_message_t state)
55 {
56 #ifdef CONFIG_LEDS_TRIGGERS
57         if (corgi_amber_led.trigger &&
58             strcmp(corgi_amber_led.trigger->name, "sharpsl-charge"))
59 #endif
60                 led_classdev_suspend(&corgi_amber_led);
61         led_classdev_suspend(&corgi_green_led);
62         return 0;
63 }
64
65 static int corgiled_resume(struct platform_device *dev)
66 {
67         led_classdev_resume(&corgi_amber_led);
68         led_classdev_resume(&corgi_green_led);
69         return 0;
70 }
71 #endif
72
73 static int corgiled_probe(struct platform_device *pdev)
74 {
75         int ret;
76
77         ret = led_classdev_register(&pdev->dev, &corgi_amber_led);
78         if (ret < 0)
79                 return ret;
80
81         ret = led_classdev_register(&pdev->dev, &corgi_green_led);
82         if (ret < 0)
83                 led_classdev_unregister(&corgi_amber_led);
84
85         return ret;
86 }
87
88 static int corgiled_remove(struct platform_device *pdev)
89 {
90         led_classdev_unregister(&corgi_amber_led);
91         led_classdev_unregister(&corgi_green_led);
92         return 0;
93 }
94
95 static struct platform_driver corgiled_driver = {
96         .probe          = corgiled_probe,
97         .remove         = corgiled_remove,
98 #ifdef CONFIG_PM
99         .suspend        = corgiled_suspend,
100         .resume         = corgiled_resume,
101 #endif
102         .driver         = {
103                 .name           = "corgi-led",
104                 .owner          = THIS_MODULE,
105         },
106 };
107
108 static int __init corgiled_init(void)
109 {
110         return platform_driver_register(&corgiled_driver);
111 }
112
113 static void __exit corgiled_exit(void)
114 {
115         platform_driver_unregister(&corgiled_driver);
116 }
117
118 module_init(corgiled_init);
119 module_exit(corgiled_exit);
120
121 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
122 MODULE_DESCRIPTION("Corgi LED driver");
123 MODULE_LICENSE("GPL");
124 MODULE_ALIAS("platform:corgi-led");