Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
leds-rb532.c
Go to the documentation of this file.
1 /*
2  * LEDs driver for the "User LED" on Routerboard532
3  *
4  * Copyright (C) 2009 Phil Sutter <[email protected]>
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,
20 {
21  if (brightness)
23 
24  else
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 <[email protected]>");
65 MODULE_ALIAS("platform:rb532-led");