blob: c3525f37f73d6895c5abfd619af06c7164cf119f [file] [log] [blame]
Phil Sutterac67e232009-01-22 19:35:48 +01001/*
2 * LEDs driver for the "User LED" on Routerboard532
3 *
4 * Copyright (C) 2009 Phil Sutter <n0-1@freewrt.org>
5 *
6 * Based on leds-cobalt-qube.c by Florian Fainelly and
7 * rb-diag.c (my own standalone driver for both LED and
8 * button of Routerboard532).
9 */
10
11#include <linux/leds.h>
12#include <linux/module.h>
13#include <linux/platform_device.h>
14
15#include <asm/mach-rc32434/gpio.h>
16#include <asm/mach-rc32434/rb.h>
17
18static void rb532_led_set(struct led_classdev *cdev,
19 enum led_brightness brightness)
20{
21 if (brightness)
22 set_latch_u5(LO_ULED, 0);
23
24 else
25 set_latch_u5(0, LO_ULED);
26}
27
28static enum led_brightness rb532_led_get(struct led_classdev *cdev)
29{
30 return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF;
31}
32
33static struct led_classdev rb532_uled = {
34 .name = "uled",
35 .brightness_set = rb532_led_set,
36 .brightness_get = rb532_led_get,
37 .default_trigger = "nand-disk",
38};
39
40static int __devinit rb532_led_probe(struct platform_device *pdev)
41{
42 return led_classdev_register(&pdev->dev, &rb532_uled);
43}
44
45static int __devexit rb532_led_remove(struct platform_device *pdev)
46{
47 led_classdev_unregister(&rb532_uled);
48 return 0;
49}
50
51static struct platform_driver rb532_led_driver = {
52 .probe = rb532_led_probe,
53 .remove = __devexit_p(rb532_led_remove),
54 .driver = {
55 .name = "rb532-led",
56 .owner = THIS_MODULE,
57 },
58};
59
60static int __init rb532_led_init(void)
61{
62 return platform_driver_register(&rb532_led_driver);
63}
64
65static void __exit rb532_led_exit(void)
66{
67 platform_driver_unregister(&rb532_led_driver);
68}
69
70module_init(rb532_led_init);
71module_exit(rb532_led_exit);
72
73MODULE_ALIAS("platform:rb532-led");
74
75MODULE_LICENSE("GPL");
76MODULE_DESCRIPTION("User LED support for Routerboard532");
77MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");