target/linux/rdc/files/drivers/leds/leds-rdc3211.c

   1 /*
   2  * LED driver for RDC3211 boards
   3  *
   4  * Copyright 2007 Florian Fainelli <florian@openwrt.org>
   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
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/leds.h>
  17 #include <linux/err.h>
  18
  19 #include <asm/gpio.h>
  20
  21 static void rdc321x_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
  22 {
  23         gpio_set_value(1, brightness ? 1 : 0);
  24 }
  25
  26 /* The DMZ led is at GPIO line 1 */
  27 static struct led_classdev rdc321x_dmz_led = {
  28         .name = "rdc321x:dmz",
  29         .brightness_set = rdc321x_led_set,
  30 };
  31
  32 static int rdc321x_leds_probe(struct platform_device *pdev)
  33 {
  34         return led_classdev_register(&pdev->dev, &rdc321x_dmz_led);
  35 }
  36
  37 static int rdc321x_leds_remove(struct platform_device *pdev)
  38 {
  39         led_classdev_unregister(&rdc321x_dmz_led);
  40         return 0;
  41 }
  42
  43 static struct platform_driver rdc321x_leds_driver = {
  44         .probe = rdc321x_leds_probe,
  45         .remove = rdc321x_leds_remove,
  46         .driver = {
  47                 .name = "rdc321x-leds",
  48                 .owner = THIS_MODULE,
  49         }
  50 };
  51
  52 static int __init rdc321x_leds_init(void)
  53 {
  54         int ret;
  55
  56         ret = platform_driver_register(&rdc321x_leds_driver);
  57
  58         return ret;
  59 }
  60
  61 static void __exit rdc321x_leds_exit(void)
  62 {
  63         platform_driver_unregister(&rdc321x_leds_driver);
  64 }
  65
  66 module_init(rdc321x_leds_init);
  67 module_exit(rdc321x_leds_exit);
  68
  69 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
  70 MODULE_DESCRIPTION("RDC321x LED driver");
  71 MODULE_LICENSE("GPL");