LED driver update

[openwrt/svn-archive/archive.git] / target / linux / adm5120-2.6 / files / drivers / char / adm5120_gpio.c

diff --git a/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c b/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c
index 6fccfb029e4e01a6fa3cd50a788bab029be14ad8..090c53a25aa38164fb315c5aae9e6f87b2c4ff54 100644 (file)
--- a/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c
+++ b/target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c
@@ -2,57 +2,51 @@
  *     ADM5120 LED (GPIO) driver
  *
  *     Copyright (C) Jeroen Vreeken (pe1rxq@amsat.org), 2005
+ *     Copyright (C) OpenWrt.org, Florian Fainelli <florian@openwrt.org>, 2007
+ *
+ *     This program is free software; you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License version 2 as
+ *     published by the Free Software Foundation.
  */
 
-#include <linux/autoconf.h>
-#include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/miscdevice.h>
-#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
 
-#define LED_MINOR 151
 #define GPIO_IO        ((unsigned long *)0xb20000b8)
 
-static ssize_t adm5120_led_write(struct file *file, const char __user *data,
-       size_t len, loff_t *ppos)
+static void adm5120_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
 {
-       unsigned char val;
-
-       if (!len || get_user(val, data))
-               return -EFAULT;
-       *GPIO_IO=(*GPIO_IO & 0x00ffffff) | (val<<24);
-       return 1;
+       if (brightness)
+               *GPIO_IO=(*GPIO_IO & 0x00ffffff) | (brightness << 24);
+       else
+               *GPIO_IO=(*GPIO_IO & 0x00ffffff) | (0 << 24);
 }
 
-static struct file_operations adm5120_led_fops = {
-       .owner  = THIS_MODULE,
-       .write  = adm5120_led_write,
-};
-
-static struct miscdevice adm5120_led_device = {
-       LED_MINOR,
-       "led",
-       &adm5120_led_fops,
+static struct led_classdev adm5120_gpio_led = {
+       .name           = "adm5120:led",
+       .brightness_set = adm5120_led_set,
 };
 
 static int __init adm5120_led_init(void)
 {
-       printk(KERN_INFO "ADM5120 LED & GPIO driver\n");
-       if (misc_register(&adm5120_led_device)) {
-               printk(KERN_WARNING "Couldn't register device %d\n", LED_MINOR);
-               return -EBUSY;
-       }
-       return 0;
+       int ret = led_classdev_register(NULL, &adm5120_gpio_led);
+
+       if (ret < 0)
+               printk(KERN_WARNING "adm5120: unable to register LED device\n");
+
+       return ret;
 }
 
 static void __exit adm5120_led_exit(void)
 {
-       misc_deregister(&adm5120_led_device);
+       led_classdev_unregister(&adm5120_gpio_led);
 }
 
 module_init(adm5120_led_init);
 module_exit(adm5120_led_exit);
 
-MODULE_DESCRIPTION("ADM5120 LED and GPIO driver");
-MODULE_AUTHOR("Jeroen Vreeken");
+MODULE_DESCRIPTION("ADM5120 LED driver");
+MODULE_AUTHOR("Jeroen Vreeken, OpenWrt.org");
 MODULE_LICENSE("GPL");