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/*
* LEDs driver for Amstrad Delta (E3)
*
* Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
*
* 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/board-ams-delta.h>
/*
* Our context
*/
struct ams_delta_led {
struct led_classdev cdev;
u8 bitmask;
};
static void ams_delta_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
struct ams_delta_led *led_dev =
container_of(led_cdev, struct ams_delta_led, cdev);
if (value)
ams_delta_latch1_write(led_dev->bitmask, led_dev->bitmask);
else
ams_delta_latch1_write(led_dev->bitmask, 0);
}
static struct ams_delta_led ams_delta_leds[] = {
{
.cdev = {
.name = "ams-delta::camera",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_CAMERA,
},
{
.cdev = {
.name = "ams-delta::advert",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_ADVERT,
},
{
.cdev = {
.name = "ams-delta::email",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_EMAIL,
},
{
.cdev = {
.name = "ams-delta::handsfree",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_HANDSFREE,
},
{
.cdev = {
.name = "ams-delta::voicemail",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_VOICEMAIL,
},
{
.cdev = {
.name = "ams-delta::voice",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_VOICE,
},
};
#ifdef CONFIG_PM
static int ams_delta_led_suspend(struct platform_device *dev,
pm_message_t state)
{
int i;
for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
led_classdev_suspend(&ams_delta_leds[i].cdev);
return 0;
}
static int ams_delta_led_resume(struct platform_device *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
led_classdev_resume(&ams_delta_leds[i].cdev);
return 0;
}
#else
#define ams_delta_led_suspend NULL
#define ams_delta_led_resume NULL
#endif
static int ams_delta_led_probe(struct platform_device *pdev)
{
int i;
int ret;
for (i = ret = 0; ret >= 0 && i < ARRAY_SIZE(ams_delta_leds); i++) {
ret = led_classdev_register(&pdev->dev,
&ams_delta_leds[i].cdev);
}
if (ret < 0 && i > 1) {
for (i = i - 2; i >= 0; i--)
led_classdev_unregister(&ams_delta_leds[i].cdev);
}
return ret;
}
static int ams_delta_led_remove(struct platform_device *pdev)
{
int i;
for (i = ARRAY_SIZE(ams_delta_leds) - 1; i >= 0; i--)
led_classdev_unregister(&ams_delta_leds[i].cdev);
return 0;
}
static struct platform_driver ams_delta_led_driver = {
.probe = ams_delta_led_probe,
.remove = ams_delta_led_remove,
.suspend = ams_delta_led_suspend,
.resume = ams_delta_led_resume,
.driver = {
.name = "ams-delta-led",
},
};
static int __init ams_delta_led_init(void)
{
return platform_driver_register(&ams_delta_led_driver);
}
static void __exit ams_delta_led_exit(void)
{
return platform_driver_unregister(&ams_delta_led_driver);
}
module_init(ams_delta_led_init);
module_exit(ams_delta_led_exit);
MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
MODULE_DESCRIPTION("Amstrad Delta LED driver");
MODULE_LICENSE("GPL");
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