[net-next-2.6.git] / drivers / leds / leds-clevo-mail.c


#include <linux/module.h>

#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/leds.h>

#include <linux/io.h>
#include <linux/dmi.h>

#include <linux/i8042.h>

#define CLEVO_MAIL_LED_OFF		0x0084
#define CLEVO_MAIL_LED_BLINK_1HZ	0x008A
#define CLEVO_MAIL_LED_BLINK_0_5HZ	0x0083

MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>");
MODULE_DESCRIPTION("Clevo mail LED driver");
MODULE_LICENSE("GPL");

static unsigned int __initdata nodetect;
module_param_named(nodetect, nodetect, bool, 0);
MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection");

static struct platform_device *pdev;

static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
{
	printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident);
	return 1;
}

/*
 * struct mail_led_whitelist - List of known good models
 *
 * Contains the known good models this driver is compatible with.
 * When adding a new model try to be as strict as possible. This
 * makes it possible to keep the false positives (the model is
 * detected as working, but in reality it is not) as low as
 * possible.
 */
static struct dmi_system_id __initdata mail_led_whitelist[] = {
	{
		.callback = clevo_mail_led_dmi_callback,
		.ident = "Clevo D410J",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "VIA"),
			DMI_MATCH(DMI_PRODUCT_NAME, "K8N800"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "VT8204B")
		}
	},
	{
		.callback = clevo_mail_led_dmi_callback,
		.ident = "Clevo M5x0N",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
			DMI_MATCH(DMI_PRODUCT_NAME, "M5x0N")
		}
	},
	{
		.callback = clevo_mail_led_dmi_callback,
		.ident = "Positivo Mobile",
		.matches = {
			DMI_MATCH(DMI_BOARD_VENDOR, "CLEVO Co. "),
			DMI_MATCH(DMI_BOARD_NAME, "M5X0V "),
			DMI_MATCH(DMI_PRODUCT_NAME, "Positivo Mobile"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "VT6198")
		}
	},
	{
		.callback = clevo_mail_led_dmi_callback,
		.ident = "Clevo D400P",
		.matches = {
			DMI_MATCH(DMI_BOARD_VENDOR, "Clevo"),
			DMI_MATCH(DMI_BOARD_NAME, "D400P"),
			DMI_MATCH(DMI_BOARD_VERSION, "Rev.A"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "0106")
		}
	},
	{
		.callback = clevo_mail_led_dmi_callback,
		.ident = "Clevo D410V",
		.matches = {
			DMI_MATCH(DMI_BOARD_VENDOR, "Clevo, Co."),
			DMI_MATCH(DMI_BOARD_NAME, "D400V/D470V"),
			DMI_MATCH(DMI_BOARD_VERSION, "SS78B"),
			DMI_MATCH(DMI_PRODUCT_VERSION, "Rev. A1")
		}
	},
	{ }
};

static void clevo_mail_led_set(struct led_classdev *led_cdev,
				enum led_brightness value)
{
	i8042_lock_chip();

	if (value == LED_OFF)
		i8042_command(NULL, CLEVO_MAIL_LED_OFF);
	else if (value <= LED_HALF)
		i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	else
		i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);

	i8042_unlock_chip();

}

static int clevo_mail_led_blink(struct led_classdev *led_cdev,
				unsigned long *delay_on,
				unsigned long *delay_off)
{
	int status = -EINVAL;

	i8042_lock_chip();

	if (*delay_on == 0 /* ms */ && *delay_off == 0 /* ms */) {
		/* Special case: the leds subsystem requested us to
		 * chose one user friendly blinking of the LED, and
		 * start it. Let's blink the led slowly (0.5Hz).
		 */
		*delay_on = 1000; /* ms */
		*delay_off = 1000; /* ms */
		i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
		status = 0;

	} else if (*delay_on == 500 /* ms */ && *delay_off == 500 /* ms */) {
		/* blink the led with 1Hz */
		i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
		status = 0;

	} else if (*delay_on == 1000 /* ms */ && *delay_off == 1000 /* ms */) {
		/* blink the led with 0.5Hz */
		i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
		status = 0;

	} else {
		printk(KERN_DEBUG KBUILD_MODNAME
		       ": clevo_mail_led_blink(..., %lu, %lu),"
		       " returning -EINVAL (unsupported)\n",
		       *delay_on, *delay_off);
	}

	i8042_unlock_chip();

	return status;
}

static struct led_classdev clevo_mail_led = {
	.name			= "clevo::mail",
	.brightness_set		= clevo_mail_led_set,
	.blink_set		= clevo_mail_led_blink,
	.flags			= LED_CORE_SUSPENDRESUME,
};

static int __devinit clevo_mail_led_probe(struct platform_device *pdev)
{
	return led_classdev_register(&pdev->dev, &clevo_mail_led);
}

static int clevo_mail_led_remove(struct platform_device *pdev)
{
	led_classdev_unregister(&clevo_mail_led);
	return 0;
}

static struct platform_driver clevo_mail_led_driver = {
	.probe		= clevo_mail_led_probe,
	.remove		= clevo_mail_led_remove,
	.driver		= {
		.name		= KBUILD_MODNAME,
		.owner		= THIS_MODULE,
	},
};

static int __init clevo_mail_led_init(void)
{
	int error = 0;
	int count = 0;

	/* Check with the help of DMI if we are running on supported hardware */
	if (!nodetect) {
		count = dmi_check_system(mail_led_whitelist);
	} else {
		count = 1;
		printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. "
		       "If the driver works on your hardware please "
		       "report model and the output of dmidecode in tracker "
		       "at http://sourceforge.net/projects/clevo-mailled/\n");
	}

	if (!count)
		return -ENODEV;

	pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);
	if (!IS_ERR(pdev)) {
		error = platform_driver_probe(&clevo_mail_led_driver,
					      clevo_mail_led_probe);
		if (error) {
			printk(KERN_ERR KBUILD_MODNAME
			       ": Can't probe platform driver\n");
			platform_device_unregister(pdev);
		}
	} else
		error = PTR_ERR(pdev);

	return error;
}

static void __exit clevo_mail_led_exit(void)
{
	platform_device_unregister(pdev);
	platform_driver_unregister(&clevo_mail_led_driver);

	clevo_mail_led_set(NULL, LED_OFF);
}

module_init(clevo_mail_led_init);
module_exit(clevo_mail_led_exit);
Commit	Line	Data
cec035de MN	1
	2	#include <linux/module.h>
	3
	4	#include <linux/platform_device.h>
	5	#include <linux/err.h>
	6	#include <linux/leds.h>
	7
	8	#include <linux/io.h>
	9	#include <linux/dmi.h>
	10
	11	#include <linux/i8042.h>
	12
	13	#define CLEVO_MAIL_LED_OFF 0x0084
	14	#define CLEVO_MAIL_LED_BLINK_1HZ 0x008A
	15	#define CLEVO_MAIL_LED_BLINK_0_5HZ 0x0083
	16
4d404fd5	17	MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>");
cec035de MN	18	MODULE_DESCRIPTION("Clevo mail LED driver");
	19	MODULE_LICENSE("GPL");
	20
	21	static unsigned int __initdata nodetect;
	22	module_param_named(nodetect, nodetect, bool, 0);
	23	MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection");
	24
	25	static struct platform_device *pdev;
	26
	27	static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
	28	{
	29	printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident);
	30	return 1;
	31	}
	32
	33	/*
	34	* struct mail_led_whitelist - List of known good models
	35	*
	36	* Contains the known good models this driver is compatible with.
	37	* When adding a new model try to be as strict as possible. This
	38	* makes it possible to keep the false positives (the model is
	39	* detected as working, but in reality it is not) as low as
	40	* possible.
	41	*/
	42	static struct dmi_system_id __initdata mail_led_whitelist[] = {
	43	{
	44	.callback = clevo_mail_led_dmi_callback,
	45	.ident = "Clevo D410J",
	46	.matches = {
	47	DMI_MATCH(DMI_SYS_VENDOR, "VIA"),
	48	DMI_MATCH(DMI_PRODUCT_NAME, "K8N800"),
	49	DMI_MATCH(DMI_PRODUCT_VERSION, "VT8204B")
	50	}
	51	},
	52	{
	53	.callback = clevo_mail_led_dmi_callback,
	54	.ident = "Clevo M5x0N",
	55	.matches = {
	56	DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
	57	DMI_MATCH(DMI_PRODUCT_NAME, "M5x0N")
	58	}
	59	},
	60	{
	61	.callback = clevo_mail_led_dmi_callback,
	62	.ident = "Positivo Mobile",
	63	.matches = {
	64	DMI_MATCH(DMI_BOARD_VENDOR, "CLEVO Co. "),
	65	DMI_MATCH(DMI_BOARD_NAME, "M5X0V "),
	66	DMI_MATCH(DMI_PRODUCT_NAME, "Positivo Mobile"),
	67	DMI_MATCH(DMI_PRODUCT_VERSION, "VT6198")
	68	}
	69	},
b3ba31f8 MN	70	{
	71	.callback = clevo_mail_led_dmi_callback,
	72	.ident = "Clevo D400P",
	73	.matches = {
	74	DMI_MATCH(DMI_BOARD_VENDOR, "Clevo"),
	75	DMI_MATCH(DMI_BOARD_NAME, "D400P"),
	76	DMI_MATCH(DMI_BOARD_VERSION, "Rev.A"),
	77	DMI_MATCH(DMI_PRODUCT_VERSION, "0106")
	78	}
	79	},
cec035de MN	80	{
	81	.callback = clevo_mail_led_dmi_callback,
	82	.ident = "Clevo D410V",
	83	.matches = {
	84	DMI_MATCH(DMI_BOARD_VENDOR, "Clevo, Co."),
	85	DMI_MATCH(DMI_BOARD_NAME, "D400V/D470V"),
	86	DMI_MATCH(DMI_BOARD_VERSION, "SS78B"),
	87	DMI_MATCH(DMI_PRODUCT_VERSION, "Rev. A1")
	88	}
	89	},
	90	{ }
	91	};
	92
	93	static void clevo_mail_led_set(struct led_classdev *led_cdev,
	94	enum led_brightness value)
	95	{
181d683d DT	96	i8042_lock_chip();
181d683d DT	97
cec035de MN	98	if (value == LED_OFF)
	99	i8042_command(NULL, CLEVO_MAIL_LED_OFF);
	100	else if (value <= LED_HALF)
	101	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	102	else
	103	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
	104
181d683d DT	105	i8042_unlock_chip();
181d683d DT	106
cec035de MN	107	}
cec035de MN	108
92e015cb	109	static int clevo_mail_led_blink(struct led_classdev *led_cdev,
4d404fd5 NM	110	unsigned long *delay_on,
4d404fd5 NM	111	unsigned long *delay_off)
92e015cb MN	112	{
	113	int status = -EINVAL;
	114
181d683d DT	115	i8042_lock_chip();
181d683d DT	116
92e015cb MN	117	if (delay_on == 0 / ms / && delay_off == 0 /* ms */) {
	118	/* Special case: the leds subsystem requested us to
	119	* chose one user friendly blinking of the LED, and
	120	* start it. Let's blink the led slowly (0.5Hz).
	121	*/
	122	delay_on = 1000; / ms */
	123	delay_off = 1000; / ms */
	124	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	125	status = 0;
	126
	127	} else if (delay_on == 500 / ms / && delay_off == 500 /* ms */) {
	128	/* blink the led with 1Hz */
	129	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
	130	status = 0;
	131
	132	} else if (delay_on == 1000 / ms / && delay_off == 1000 /* ms */) {
	133	/* blink the led with 0.5Hz */
	134	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	135	status = 0;
	136
	137	} else {
	138	printk(KERN_DEBUG KBUILD_MODNAME
	139	": clevo_mail_led_blink(..., %lu, %lu),"
	140	" returning -EINVAL (unsupported)\n",
	141	delay_on, delay_off);
	142	}
	143
181d683d DT	144	i8042_unlock_chip();
181d683d DT	145
92e015cb MN	146	return status;
	147	}
	148
cec035de	149	static struct led_classdev clevo_mail_led = {
6c152bee	150	.name = "clevo::mail",
cec035de	151	.brightness_set = clevo_mail_led_set,
92e015cb	152	.blink_set = clevo_mail_led_blink,
859cb7f2	153	.flags = LED_CORE_SUSPENDRESUME,
cec035de MN	154	};
cec035de MN	155
f16a5dba	156	static int __devinit clevo_mail_led_probe(struct platform_device *pdev)
cec035de MN	157	{
	158	return led_classdev_register(&pdev->dev, &clevo_mail_led);
	159	}
	160
	161	static int clevo_mail_led_remove(struct platform_device *pdev)
	162	{
	163	led_classdev_unregister(&clevo_mail_led);
	164	return 0;
	165	}
	166
cec035de MN	167	static struct platform_driver clevo_mail_led_driver = {
	168	.probe = clevo_mail_led_probe,
	169	.remove = clevo_mail_led_remove,
cec035de MN	170	.driver = {
cec035de MN	171	.name = KBUILD_MODNAME,
3c4ded97	172	.owner = THIS_MODULE,
cec035de MN	173	},
	174	};
	175
	176	static int __init clevo_mail_led_init(void)
	177	{
	178	int error = 0;
	179	int count = 0;
	180
	181	/* Check with the help of DMI if we are running on supported hardware */
	182	if (!nodetect) {
	183	count = dmi_check_system(mail_led_whitelist);
	184	} else {
	185	count = 1;
	186	printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. "
	187	"If the driver works on your hardware please "
	188	"report model and the output of dmidecode in tracker "
	189	"at http://sourceforge.net/projects/clevo-mailled/\n");
	190	}
	191
	192	if (!count)
	193	return -ENODEV;
	194
	195	pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);
	196	if (!IS_ERR(pdev)) {
	197	error = platform_driver_probe(&clevo_mail_led_driver,
	198	clevo_mail_led_probe);
	199	if (error) {
	200	printk(KERN_ERR KBUILD_MODNAME
	201	": Can't probe platform driver\n");
	202	platform_device_unregister(pdev);
	203	}
	204	} else
	205	error = PTR_ERR(pdev);
	206
	207	return error;
	208	}
	209
	210	static void __exit clevo_mail_led_exit(void)
	211	{
	212	platform_device_unregister(pdev);
	213	platform_driver_unregister(&clevo_mail_led_driver);
	214
	215	clevo_mail_led_set(NULL, LED_OFF);
	216	}
	217
	218	module_init(clevo_mail_led_init);
	219	module_exit(clevo_mail_led_exit);