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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"); |
98 |
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