target/linux/rdc-2.6/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 #include <linux/delay.h>
  19
  20 #include <asm/io.h>
  21 #include <asm/gpio.h>
  22
  23 int gpio;
  24 module_param(gpio, int, 0444);
  25 MODULE_PARM_DESC(gpio, " GPIO line");
  26
  27 static void rdc321x_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
  28 {
  29         gpio_set_value(gpio, brightness ? 1 : 0);
  30 }
  31
  32 static struct led_classdev rdc321x_dmz_led = {
  33         .name = "rdc321x:dmz",
  34         .brightness_set = rdc321x_led_set,
  35 };
  36
  37 static int rdc321x_leds_probe(struct platform_device *pdev)
  38 {
  39         return led_classdev_register(&pdev->dev, &rdc321x_dmz_led);
  40 }
  41
  42 static int rdc321x_leds_remove(struct platform_device *pdev)
  43 {
  44         led_classdev_unregister(&rdc321x_dmz_led);
  45         return 0;
  46 }
  47
  48 static struct platform_driver rdc321x_leds_driver = {
  49         .probe = rdc321x_leds_probe,
  50         .remove = rdc321x_leds_remove,
  51         .driver = {
  52                 .name = "rdc321x-leds",
  53                 .owner = THIS_MODULE,
  54         }
  55 };
  56
  57 static int __init rdc321x_leds_init(void)
  58 {
  59         int ret;
  60
  61         ret = platform_driver_register(&rdc321x_leds_driver);
  62
  63         return ret;
  64 }
  65
  66 static void __exit rdc321x_leds_exit(void)
  67 {
  68         platform_driver_unregister(&rdc321x_leds_driver);
  69 }
  70
  71 module_init(rdc321x_leds_init);
  72 module_exit(rdc321x_leds_exit);
  73
  74 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
  75 MODULE_DESCRIPTION("RDC321x LED driver");
  76 MODULE_LICENSE("GPL");