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/*
* LED driver for RDC3211 boards
*
* Copyright 2007 Florian Fainelli <florian@openwrt.org>
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <asm/io.h>
#define LED_VAL 0x8000384C // the data ofset of gpio 0~30
static struct platform_device *pdev;
static void rdc3211_led_set(struct led_classdev *led_cdev, enum led_brightness brightness)
{
unsigned long ul_ledstat = 0xffffffff;
unsigned long led_bit = 1 << (led_cdev->flags);
if (brightness)
ul_ledstat &= ~led_bit;
else
ul_ledstat|= led_bit;
outl(LED_VAL, 0xcf8);
outl(ul_ledstat, 0xcfc);
}
static struct led_classdev rdc3211_power_led = {
.name = "rdc3211:power",
.flags = 15,
.brightness_set = rdc3211_led_set,
};
static struct led_classdev rdc3211_dmz_led = {
.name = "rdc3211:dmz",
.flags = 16,
.brightness_set = rdc3211_led_set,
};
static int rdc3211_leds_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &rdc3211_power_led);
if (ret < 0)
return ret;
ret = led_classdev_register(&pdev->dev, &rdc3211_dmz_led);
if (ret < 0)
led_classdev_unregister(&rdc3211_power_led);
return ret;
}
static int rdc3211_leds_remove(struct platform_device *pdev)
{
led_classdev_unregister(&rdc3211_power_led);
led_classdev_unregister(&rdc3211_dmz_led);
return 0;
}
static struct platform_driver rdc3211_leds_driver = {
.probe = rdc3211_leds_probe,
.remove = rdc3211_leds_remove,
.driver = {
.name = "rdc3211-leds",
}
};
static int __init rdc3211_leds_init(void)
{
int ret;
ret = platform_driver_register(&rdc3211_leds_driver);
if (ret < 0)
goto out;
pdev = platform_device_register_simple("rdc3211-leds", -1, NULL, 0);
if (IS_ERR(pdev)) {
ret = PTR_ERR(pdev);
platform_driver_unregister(&rdc3211_leds_driver);
goto out;
}
out:
return ret;
}
static void __exit rdc3211_leds_exit(void)
{
platform_driver_unregister(&rdc3211_leds_driver);
}
module_init(rdc3211_leds_init);
module_exit(rdc3211_leds_exit);
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
MODULE_DESCRIPTION("RDC3211 LED driver");
MODULE_LICENSE("GPL");
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