aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390/kernel/kprobes.c
Commit message (Expand)AuthorAge
* Remove all inclusions of <linux/config.h>Dave Jones2006-10-04
* [PATCH] kretprobe spinlock deadlock patchbibo,mao2006-10-02
* [S390] add kprobes support.Michael Grundy2006-09-20
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108
/*
 * 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");