[mirror_ubuntu-zesty-kernel.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 bool __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 clevo_mail_led_dmi_table - 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 clevo_mail_led_dmi_table[] = {
	{
		.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")
		}
	},
	{ }
};
MODULE_DEVICE_TABLE(dmi, clevo_mail_led_dmi_table);

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(clevo_mail_led_dmi_table);
	} 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
90ab5ee9	21	static bool __initdata nodetect;
cec035de MN	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	/*
96f09791	34	* struct clevo_mail_led_dmi_table - List of known good models
cec035de MN	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	*/
96f09791	42	static struct dmi_system_id __initdata clevo_mail_led_dmi_table[] = {
cec035de MN	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	};
96f09791	92	MODULE_DEVICE_TABLE(dmi, clevo_mail_led_dmi_table);
cec035de MN	93
	94	static void clevo_mail_led_set(struct led_classdev *led_cdev,
	95	enum led_brightness value)
	96	{
181d683d DT	97	i8042_lock_chip();
181d683d DT	98
cec035de MN	99	if (value == LED_OFF)
	100	i8042_command(NULL, CLEVO_MAIL_LED_OFF);
	101	else if (value <= LED_HALF)
	102	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	103	else
	104	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
	105
181d683d DT	106	i8042_unlock_chip();
181d683d DT	107
cec035de MN	108	}
cec035de MN	109
92e015cb	110	static int clevo_mail_led_blink(struct led_classdev *led_cdev,
4d404fd5 NM	111	unsigned long *delay_on,
4d404fd5 NM	112	unsigned long *delay_off)
92e015cb MN	113	{
	114	int status = -EINVAL;
	115
181d683d DT	116	i8042_lock_chip();
181d683d DT	117
92e015cb MN	118	if (delay_on == 0 / ms / && delay_off == 0 /* ms */) {
	119	/* Special case: the leds subsystem requested us to
	120	* chose one user friendly blinking of the LED, and
	121	* start it. Let's blink the led slowly (0.5Hz).
	122	*/
	123	delay_on = 1000; / ms */
	124	delay_off = 1000; / ms */
	125	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	126	status = 0;
	127
	128	} else if (delay_on == 500 / ms / && delay_off == 500 /* ms */) {
	129	/* blink the led with 1Hz */
	130	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
	131	status = 0;
	132
	133	} else if (delay_on == 1000 / ms / && delay_off == 1000 /* ms */) {
	134	/* blink the led with 0.5Hz */
	135	i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
	136	status = 0;
	137
	138	} else {
	139	printk(KERN_DEBUG KBUILD_MODNAME
	140	": clevo_mail_led_blink(..., %lu, %lu),"
	141	" returning -EINVAL (unsupported)\n",
	142	delay_on, delay_off);
	143	}
	144
181d683d DT	145	i8042_unlock_chip();
181d683d DT	146
92e015cb MN	147	return status;
	148	}
	149
cec035de	150	static struct led_classdev clevo_mail_led = {
6c152bee	151	.name = "clevo::mail",
cec035de	152	.brightness_set = clevo_mail_led_set,
92e015cb	153	.blink_set = clevo_mail_led_blink,
859cb7f2	154	.flags = LED_CORE_SUSPENDRESUME,
cec035de MN	155	};
cec035de MN	156
f16a5dba	157	static int __devinit clevo_mail_led_probe(struct platform_device *pdev)
cec035de MN	158	{
	159	return led_classdev_register(&pdev->dev, &clevo_mail_led);
	160	}
	161
	162	static int clevo_mail_led_remove(struct platform_device *pdev)
	163	{
	164	led_classdev_unregister(&clevo_mail_led);
	165	return 0;
	166	}
	167
cec035de MN	168	static struct platform_driver clevo_mail_led_driver = {
	169	.probe = clevo_mail_led_probe,
	170	.remove = clevo_mail_led_remove,
cec035de MN	171	.driver = {
cec035de MN	172	.name = KBUILD_MODNAME,
3c4ded97	173	.owner = THIS_MODULE,
cec035de MN	174	},
	175	};
	176
	177	static int __init clevo_mail_led_init(void)
	178	{
	179	int error = 0;
	180	int count = 0;
	181
	182	/* Check with the help of DMI if we are running on supported hardware */
	183	if (!nodetect) {
96f09791	184	count = dmi_check_system(clevo_mail_led_dmi_table);
cec035de MN	185	} else {
	186	count = 1;
	187	printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. "
	188	"If the driver works on your hardware please "
	189	"report model and the output of dmidecode in tracker "
	190	"at http://sourceforge.net/projects/clevo-mailled/\n");
	191	}
	192
	193	if (!count)
	194	return -ENODEV;
	195
	196	pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);
	197	if (!IS_ERR(pdev)) {
	198	error = platform_driver_probe(&clevo_mail_led_driver,
	199	clevo_mail_led_probe);
	200	if (error) {
	201	printk(KERN_ERR KBUILD_MODNAME
	202	": Can't probe platform driver\n");
	203	platform_device_unregister(pdev);
	204	}
	205	} else
	206	error = PTR_ERR(pdev);
	207
	208	return error;
	209	}
	210
	211	static void __exit clevo_mail_led_exit(void)
	212	{
	213	platform_device_unregister(pdev);
	214	platform_driver_unregister(&clevo_mail_led_driver);
	215
	216	clevo_mail_led_set(NULL, LED_OFF);
	217	}
	218
	219	module_init(clevo_mail_led_init);
	220	module_exit(clevo_mail_led_exit);