1/*
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 rb532_led_probe(struct platform_device *pdev)
41{
42	return led_classdev_register(&pdev->dev, &rb532_uled);
43}
44
45static int 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 = rb532_led_remove,
54	.driver = {
55		.name = "rb532-led",
56	},
57};
58
59module_platform_driver(rb532_led_driver);
60
61MODULE_LICENSE("GPL");
62MODULE_DESCRIPTION("User LED support for Routerboard532");
63MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
64MODULE_ALIAS("platform:rb532-led");
65