Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq
[linux-2.6] / drivers / leds / leds-tosa.c
1 /*
2  * LED Triggers Core
3  *
4  * Copyright 2005 Dirk Opfer
5  *
6  * Author: Dirk Opfer <Dirk@Opfer-Online.de>
7  *      based on spitz.c
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  *
13  */
14
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/tosa.h>
24
25 static void tosaled_amber_set(struct led_classdev *led_cdev,
26                                 enum led_brightness value)
27 {
28         if (value)
29                 set_scoop_gpio(&tosascoop_jc_device.dev,
30                                 TOSA_SCOOP_JC_CHRG_ERR_LED);
31         else
32                 reset_scoop_gpio(&tosascoop_jc_device.dev,
33                                 TOSA_SCOOP_JC_CHRG_ERR_LED);
34 }
35
36 static void tosaled_green_set(struct led_classdev *led_cdev,
37                                 enum led_brightness value)
38 {
39         if (value)
40                 set_scoop_gpio(&tosascoop_jc_device.dev,
41                                 TOSA_SCOOP_JC_NOTE_LED);
42         else
43                 reset_scoop_gpio(&tosascoop_jc_device.dev,
44                                 TOSA_SCOOP_JC_NOTE_LED);
45 }
46
47 static struct led_classdev tosa_amber_led = {
48         .name                   = "tosa:amber",
49         .default_trigger        = "sharpsl-charge",
50         .brightness_set         = tosaled_amber_set,
51 };
52
53 static struct led_classdev tosa_green_led = {
54         .name                   = "tosa:green",
55         .default_trigger        = "nand-disk",
56         .brightness_set         = tosaled_green_set,
57 };
58
59 #ifdef CONFIG_PM
60 static int tosaled_suspend(struct platform_device *dev, pm_message_t state)
61 {
62 #ifdef CONFIG_LEDS_TRIGGERS
63         if (tosa_amber_led.trigger && strcmp(tosa_amber_led.trigger->name,
64                                                 "sharpsl-charge"))
65 #endif
66                 led_classdev_suspend(&tosa_amber_led);
67         led_classdev_suspend(&tosa_green_led);
68         return 0;
69 }
70
71 static int tosaled_resume(struct platform_device *dev)
72 {
73         led_classdev_resume(&tosa_amber_led);
74         led_classdev_resume(&tosa_green_led);
75         return 0;
76 }
77 #else
78 #define tosaled_suspend NULL
79 #define tosaled_resume NULL
80 #endif
81
82 static int tosaled_probe(struct platform_device *pdev)
83 {
84         int ret;
85
86         ret = led_classdev_register(&pdev->dev, &tosa_amber_led);
87         if (ret < 0)
88                 return ret;
89
90         ret = led_classdev_register(&pdev->dev, &tosa_green_led);
91         if (ret < 0)
92                 led_classdev_unregister(&tosa_amber_led);
93
94         return ret;
95 }
96
97 static int tosaled_remove(struct platform_device *pdev)
98 {
99         led_classdev_unregister(&tosa_amber_led);
100         led_classdev_unregister(&tosa_green_led);
101
102         return 0;
103 }
104
105 static struct platform_driver tosaled_driver = {
106         .probe          = tosaled_probe,
107         .remove         = tosaled_remove,
108         .suspend        = tosaled_suspend,
109         .resume         = tosaled_resume,
110         .driver         = {
111                 .name           = "tosa-led",
112         },
113 };
114
115 static int __init tosaled_init(void)
116 {
117         return platform_driver_register(&tosaled_driver);
118 }
119
120 static void __exit tosaled_exit(void)
121 {
122         platform_driver_unregister(&tosaled_driver);
123 }
124
125 module_init(tosaled_init);
126 module_exit(tosaled_exit);
127
128 MODULE_AUTHOR("Dirk Opfer <Dirk@Opfer-Online.de>");
129 MODULE_DESCRIPTION("Tosa LED driver");
130 MODULE_LICENSE("GPL");