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-rw-r--r--target/linux/adm5120-2.6/files/drivers/char/adm5120_gpio.c56
1 files changed, 25 insertions, 31 deletions
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 6fccfb029e..090c53a25a 100644
--- 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");