/
leds-hp6xx.c
executable file
·108 lines (89 loc) · 2.44 KB
/
leds-hp6xx.c
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/*
* LED Triggers Core
* For the HP Jornada 620/660/680/690 handhelds
*
* Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
* this driver is based on leds-spitz.c by Richard Purdie.
*
* 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/hd64461.h>
#include <mach/hp6xx.h>
static void hp6xxled_green_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
u8 v8;
v8 = inb(PKDR);
if (value)
outb(v8 & (~PKDR_LED_GREEN), PKDR);
else
outb(v8 | PKDR_LED_GREEN, PKDR);
}
static void hp6xxled_red_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
u16 v16;
v16 = inw(HD64461_GPBDR);
if (value)
outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
else
outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
}
static struct led_classdev hp6xx_red_led = {
.name = "hp6xx:red",
.default_trigger = "hp6xx-charge",
.brightness_set = hp6xxled_red_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static struct led_classdev hp6xx_green_led = {
.name = "hp6xx:green",
.default_trigger = "ide-disk",
.brightness_set = hp6xxled_green_set,
.flags = LED_CORE_SUSPENDRESUME,
};
static int hp6xxled_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &hp6xx_red_led);
if (ret < 0)
return ret;
ret = led_classdev_register(&pdev->dev, &hp6xx_green_led);
if (ret < 0)
led_classdev_unregister(&hp6xx_red_led);
return ret;
}
static int hp6xxled_remove(struct platform_device *pdev)
{
led_classdev_unregister(&hp6xx_red_led);
led_classdev_unregister(&hp6xx_green_led);
return 0;
}
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:hp6xx-led");
static struct platform_driver hp6xxled_driver = {
.probe = hp6xxled_probe,
.remove = hp6xxled_remove,
.driver = {
.name = "hp6xx-led",
.owner = THIS_MODULE,
},
};
static int __init hp6xxled_init(void)
{
return platform_driver_register(&hp6xxled_driver);
}
static void __exit hp6xxled_exit(void)
{
platform_driver_unregister(&hp6xxled_driver);
}
module_init(hp6xxled_init);
module_exit(hp6xxled_exit);
MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
MODULE_LICENSE("GPL");