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/*
* drivers/leds/leds-cm-x270.c
*
* Copyright 2007 CompuLab Ltd.
* Author: Mike Rapoport <mike@compulab.co.il>
*
* Based on leds-corgi.c
* Author: Richard Purdie <rpurdie@openedhand.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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pxa-regs.h>
#define GPIO_RED_LED (93)
#define GPIO_GREEN_LED (94)
static void cmx270_red_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
else
GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
}
static void cmx270_green_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
else
GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
}
static struct led_classdev cmx270_red_led = {
.name = "cm-x270:red",
.default_trigger = "nand-disk",
.brightness_set = cmx270_red_set,
};
static struct led_classdev cmx270_green_led = {
.name = "cm-x270:green",
.default_trigger = "heartbeat",
.brightness_set = cmx270_green_set,
};
#ifdef CONFIG_PM
static int cmx270led_suspend(struct platform_device *dev, pm_message_t state)
{
led_classdev_suspend(&cmx270_red_led);
led_classdev_suspend(&cmx270_green_led);
return 0;
}
static int cmx270led_resume(struct platform_device *dev)
{
led_classdev_resume(&cmx270_red_led);
led_classdev_resume(&cmx270_green_led);
return 0;
}
#endif
static int cmx270led_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &cmx270_red_led);
if (ret < 0)
return ret;
ret = led_classdev_register(&pdev->dev, &cmx270_green_led);
if (ret < 0)
led_classdev_unregister(&cmx270_red_led);
return ret;
}
static int cmx270led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&cmx270_red_led);
led_classdev_unregister(&cmx270_green_led);
return 0;
}
static struct platform_driver cmx270led_driver = {
.probe = cmx270led_probe,
.remove = cmx270led_remove,
#ifdef CONFIG_PM
.suspend = cmx270led_suspend,
.resume = cmx270led_resume,
#endif
.driver = {
.name = "cm-x270-led",
},
};
static int __init cmx270led_init(void)
{
return platform_driver_register(&cmx270led_driver);
}
static void __exit cmx270led_exit(void)
{
platform_driver_unregister(&cmx270led_driver);
}
module_init(cmx270led_init);
module_exit(cmx270led_exit);
MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
MODULE_DESCRIPTION("CM-x270 LED driver");
MODULE_LICENSE("GPL");
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