[SCSI] libsas: execute transport link resets with libata-eh via host workqueue
[linux-2.6.git] / drivers / leds / leds-rb532.c
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
18 static 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
28 static enum led_brightness rb532_led_get(struct led_classdev *cdev)
29 {
30         return (get_latch_u5() & LO_ULED) ? LED_FULL : LED_OFF;
31 }
32
33 static 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
40 static int __devinit rb532_led_probe(struct platform_device *pdev)
41 {
42         return led_classdev_register(&pdev->dev, &rb532_uled);
43 }
44
45 static int __devexit rb532_led_remove(struct platform_device *pdev)
46 {
47         led_classdev_unregister(&rb532_uled);
48         return 0;
49 }
50
51 static 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
60 module_platform_driver(rb532_led_driver);
61
62 MODULE_LICENSE("GPL");
63 MODULE_DESCRIPTION("User LED support for Routerboard532");
64 MODULE_AUTHOR("Phil Sutter <n0-1@freewrt.org>");
65 MODULE_ALIAS("platform:rb532-led");