LED driver update

SVN-Revision: 7180

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");