mfd: twl-core: regulator configuration for twl6030 V1V8, V2V1 SMPS
[linux-2.6.git] / drivers / leds / leds-locomo.c
1 /*
2  * linux/drivers/leds/leds-locomo.c
3  *
4  * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/module.h>
14 #include <linux/device.h>
15 #include <linux/leds.h>
16
17 #include <mach/hardware.h>
18 #include <asm/hardware/locomo.h>
19
20 static void locomoled_brightness_set(struct led_classdev *led_cdev,
21                                 enum led_brightness value, int offset)
22 {
23         struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
24         unsigned long flags;
25
26         local_irq_save(flags);
27         if (value)
28                 locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
29         else
30                 locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
31         local_irq_restore(flags);
32 }
33
34 static void locomoled_brightness_set0(struct led_classdev *led_cdev,
35                                 enum led_brightness value)
36 {
37         locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
38 }
39
40 static void locomoled_brightness_set1(struct led_classdev *led_cdev,
41                                 enum led_brightness value)
42 {
43         locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
44 }
45
46 static struct led_classdev locomo_led0 = {
47         .name                   = "locomo:amber:charge",
48         .default_trigger        = "main-battery-charging",
49         .brightness_set         = locomoled_brightness_set0,
50 };
51
52 static struct led_classdev locomo_led1 = {
53         .name                   = "locomo:green:mail",
54         .default_trigger        = "nand-disk",
55         .brightness_set         = locomoled_brightness_set1,
56 };
57
58 static int locomoled_probe(struct locomo_dev *ldev)
59 {
60         int ret;
61
62         ret = led_classdev_register(&ldev->dev, &locomo_led0);
63         if (ret < 0)
64                 return ret;
65
66         ret = led_classdev_register(&ldev->dev, &locomo_led1);
67         if (ret < 0)
68                 led_classdev_unregister(&locomo_led0);
69
70         return ret;
71 }
72
73 static int locomoled_remove(struct locomo_dev *dev)
74 {
75         led_classdev_unregister(&locomo_led0);
76         led_classdev_unregister(&locomo_led1);
77         return 0;
78 }
79
80 static struct locomo_driver locomoled_driver = {
81         .drv = {
82                 .name = "locomoled"
83         },
84         .devid  = LOCOMO_DEVID_LED,
85         .probe  = locomoled_probe,
86         .remove = locomoled_remove,
87 };
88
89 static int __init locomoled_init(void)
90 {
91         return locomo_driver_register(&locomoled_driver);
92 }
93 module_init(locomoled_init);
94
95 MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
96 MODULE_DESCRIPTION("Locomo LED driver");
97 MODULE_LICENSE("GPL");