[net-next-2.6.git] / drivers / leds / leds-ams-delta.c

/*
 * 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 <mach/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",
		.owner = THIS_MODULE,
	},
};

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");
MODULE_ALIAS("platform:ams-delta-led");
Commit	Line	Data
9becde79 JM	1	/*
	2	* LEDs driver for Amstrad Delta (E3)
	3	*
	4	* Copyright (C) 2006 Jonathan McDowell <noodles@earth.li>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
9becde79 JM	11	#include <linux/kernel.h>
	12	#include <linux/init.h>
	13	#include <linux/platform_device.h>
	14	#include <linux/leds.h>
a09e64fb	15	#include <mach/board-ams-delta.h>
9becde79 JM	16
	17	/*
	18	* Our context
	19	*/
	20	struct ams_delta_led {
	21	struct led_classdev cdev;
	22	u8 bitmask;
	23	};
	24
	25	static void ams_delta_led_set(struct led_classdev *led_cdev,
	26	enum led_brightness value)
	27	{
	28	struct ams_delta_led *led_dev =
	29	container_of(led_cdev, struct ams_delta_led, cdev);
	30
	31	if (value)
	32	ams_delta_latch1_write(led_dev->bitmask, led_dev->bitmask);
	33	else
	34	ams_delta_latch1_write(led_dev->bitmask, 0);
	35	}
	36
	37	static struct ams_delta_led ams_delta_leds[] = {
	38	{
	39	.cdev = {
6c152bee	40	.name = "ams-delta::camera",
9becde79 JM	41	.brightness_set = ams_delta_led_set,
	42	},
	43	.bitmask = AMS_DELTA_LATCH1_LED_CAMERA,
	44	},
	45	{
	46	.cdev = {
6c152bee	47	.name = "ams-delta::advert",
9becde79 JM	48	.brightness_set = ams_delta_led_set,
	49	},
	50	.bitmask = AMS_DELTA_LATCH1_LED_ADVERT,
	51	},
	52	{
	53	.cdev = {
6c152bee	54	.name = "ams-delta::email",
9becde79 JM	55	.brightness_set = ams_delta_led_set,
	56	},
	57	.bitmask = AMS_DELTA_LATCH1_LED_EMAIL,
	58	},
	59	{
	60	.cdev = {
6c152bee	61	.name = "ams-delta::handsfree",
9becde79 JM	62	.brightness_set = ams_delta_led_set,
	63	},
	64	.bitmask = AMS_DELTA_LATCH1_LED_HANDSFREE,
	65	},
	66	{
	67	.cdev = {
6c152bee	68	.name = "ams-delta::voicemail",
9becde79 JM	69	.brightness_set = ams_delta_led_set,
	70	},
	71	.bitmask = AMS_DELTA_LATCH1_LED_VOICEMAIL,
	72	},
	73	{
	74	.cdev = {
6c152bee	75	.name = "ams-delta::voice",
9becde79 JM	76	.brightness_set = ams_delta_led_set,
	77	},
	78	.bitmask = AMS_DELTA_LATCH1_LED_VOICE,
	79	},
	80	};
	81
	82	#ifdef CONFIG_PM
	83	static int ams_delta_led_suspend(struct platform_device *dev,
	84	pm_message_t state)
	85	{
	86	int i;
	87
	88	for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
	89	led_classdev_suspend(&ams_delta_leds[i].cdev);
	90
	91	return 0;
	92	}
	93
	94	static int ams_delta_led_resume(struct platform_device *dev)
	95	{
	96	int i;
	97
	98	for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++)
	99	led_classdev_resume(&ams_delta_leds[i].cdev);
	100
	101	return 0;
	102	}
	103	#else
	104	#define ams_delta_led_suspend NULL
	105	#define ams_delta_led_resume NULL
	106	#endif
	107
	108	static int ams_delta_led_probe(struct platform_device *pdev)
	109	{
	110	int i;
	111	int ret;
	112
	113	for (i = ret = 0; ret >= 0 && i < ARRAY_SIZE(ams_delta_leds); i++) {
	114	ret = led_classdev_register(&pdev->dev,
	115	&ams_delta_leds[i].cdev);
	116	}
	117
	118	if (ret < 0 && i > 1) {
	119	for (i = i - 2; i >= 0; i--)
	120	led_classdev_unregister(&ams_delta_leds[i].cdev);
	121	}
	122
	123	return ret;
	124	}
	125
	126	static int ams_delta_led_remove(struct platform_device *pdev)
	127	{
	128	int i;
	129
	130	for (i = ARRAY_SIZE(ams_delta_leds) - 1; i >= 0; i--)
	131	led_classdev_unregister(&ams_delta_leds[i].cdev);
	132
	133	return 0;
	134	}
	135
	136	static struct platform_driver ams_delta_led_driver = {
	137	.probe = ams_delta_led_probe,
	138	.remove = ams_delta_led_remove,
	139	.suspend = ams_delta_led_suspend,
140	.resume = ams_delta_led_resume,
141	.driver = {
142	.name = "ams-delta-led",
3c4ded97	143	.owner = THIS_MODULE,
9becde79 JM	144	},
	145	};
	146
	147	static int __init ams_delta_led_init(void)
	148	{
	149	return platform_driver_register(&ams_delta_led_driver);
	150	}
	151
	152	static void __exit ams_delta_led_exit(void)
	153	{
	154	return platform_driver_unregister(&ams_delta_led_driver);
	155	}
	156
	157	module_init(ams_delta_led_init);
	158	module_exit(ams_delta_led_exit);
	159
	160	MODULE_AUTHOR("Jonathan McDowell <noodles@earth.li>");
	161	MODULE_DESCRIPTION("Amstrad Delta LED driver");
	162	MODULE_LICENSE("GPL");
3c4ded97	163	MODULE_ALIAS("platform:ams-delta-led");