[PATCH] LED: Improve Kconfig information
[linux-2.6.git] / drivers / leds / leds-spitz.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/config.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/leds.h>
19 #include <asm/hardware/scoop.h>
20 #include <asm/mach-types.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/arch/pxa-regs.h>
23 #include <asm/arch/spitz.h>
24
25 static void spitzled_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
26 {
27         if (value)
28                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
29         else
30                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_ORANGE);
31 }
32
33 static void spitzled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
34 {
35         if (value)
36                 set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
37         else
38                 reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_LED_GREEN);
39 }
40
41 static struct led_classdev spitz_amber_led = {
42         .name                   = "spitz:amber",
43         .default_trigger        = "sharpsl-charge",
44         .brightness_set         = spitzled_amber_set,
45 };
46
47 static struct led_classdev spitz_green_led = {
48         .name                   = "spitz:green",
49         .default_trigger        = "ide-disk",
50         .brightness_set         = spitzled_green_set,
51 };
52
53 #ifdef CONFIG_PM
54 static int spitzled_suspend(struct platform_device *dev, pm_message_t state)
55 {
56 #ifdef CONFIG_LEDS_TRIGGERS
57         if (spitz_amber_led.trigger && strcmp(spitz_amber_led.trigger->name, "sharpsl-charge"))
58 #endif
59                 led_classdev_suspend(&spitz_amber_led);
60         led_classdev_suspend(&spitz_green_led);
61         return 0;
62 }
63
64 static int spitzled_resume(struct platform_device *dev)
65 {
66         led_classdev_resume(&spitz_amber_led);
67         led_classdev_resume(&spitz_green_led);
68         return 0;
69 }
70 #endif
71
72 static int spitzled_probe(struct platform_device *pdev)
73 {
74         int ret;
75
76         if (machine_is_akita())
77                 spitz_green_led.default_trigger = "nand-disk";
78
79         ret = led_classdev_register(&pdev->dev, &spitz_amber_led);
80         if (ret < 0)
81                 return ret;
82
83         ret = led_classdev_register(&pdev->dev, &spitz_green_led);
84         if (ret < 0)
85                 led_classdev_unregister(&spitz_amber_led);
86
87         return ret;
88 }
89
90 static int spitzled_remove(struct platform_device *pdev)
91 {
92         led_classdev_unregister(&spitz_amber_led);
93         led_classdev_unregister(&spitz_green_led);
94
95         return 0;
96 }
97
98 static struct platform_driver spitzled_driver = {
99         .probe          = spitzled_probe,
100         .remove         = spitzled_remove,
101 #ifdef CONFIG_PM
102         .suspend        = spitzled_suspend,
103         .resume         = spitzled_resume,
104 #endif
105         .driver         = {
106                 .name           = "spitz-led",
107         },
108 };
109
110 static int __init spitzled_init(void)
111 {
112         return platform_driver_register(&spitzled_driver);
113 }
114
115 static void __exit spitzled_exit(void)
116 {
117         platform_driver_unregister(&spitzled_driver);
118 }
119
120 module_init(spitzled_init);
121 module_exit(spitzled_exit);
122
123 MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
124 MODULE_DESCRIPTION("Spitz LED driver");
125 MODULE_LICENSE("GPL");