satip-axe/kernel/drivers/leds/leds-mb628.c

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/*
* linux/drivers/leds/leds-mb628.c
*
* Copyright (C) 2008 STMicroelectronics Limited
* Author: Stuart Menefy <stuart.menefy@st.com>
*
* 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/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/leds.h>
#include <linux/io.h>
#include <mach/epld.h>
#include <mach/common.h>
static void mb628_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
u8 reg;
/* Locking required here */
reg = epld_read(EPLD_ENABLE);
if (brightness)
reg |= EPLD_ENABLE_HBEAT;
else
reg &= ~EPLD_ENABLE_HBEAT;
epld_write(reg, EPLD_ENABLE);
}
static struct led_classdev mb628_led = {
.name = "mb628-led",
.brightness_set = mb628_led_set,
.default_trigger = "heartbeat"
};
static int __init mb628_led_init(void)
{
return led_classdev_register(NULL, &mb628_led);
}
static void __exit mb628_led_exit(void)
{
led_classdev_unregister(&mb628_led);
}
module_init(mb628_led_init);
module_exit(mb628_led_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LED support for STMicroelectronics mb628");
MODULE_AUTHOR("Stuart Menefy <stuart.menefy@st.com>");