[deliverable/linux.git] / drivers / hwmon / hp_accel.c

/*
 *  hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS
 *
 *  Copyright (C) 2007-2008 Yan Burman
 *  Copyright (C) 2008 Eric Piel
 *  Copyright (C) 2008-2009 Pavel Machek
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/wait.h>
#include <linux/poll.h>
#include <linux/freezer.h>
#include <linux/uaccess.h>
#include <linux/leds.h>
#include <acpi/acpi_drivers.h>
#include <asm/atomic.h>
#include "lis3lv02d.h"

#define DRIVER_NAME     "lis3lv02d"
#define ACPI_MDPS_CLASS "accelerometer"

/* Delayed LEDs infrastructure ------------------------------------ */

/* Special LED class that can defer work */
struct delayed_led_classdev {
	struct led_classdev led_classdev;
	struct work_struct work;
	enum led_brightness new_brightness;

	unsigned int led;		/* For driver */
	void (*set_brightness)(struct delayed_led_classdev *data, enum led_brightness value);
};

static inline void delayed_set_status_worker(struct work_struct *work)
{
	struct delayed_led_classdev *data =
			container_of(work, struct delayed_led_classdev, work);

	data->set_brightness(data, data->new_brightness);
}

static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
			      enum led_brightness brightness)
{
	struct delayed_led_classdev *data = container_of(led_cdev,
			     struct delayed_led_classdev, led_classdev);
	data->new_brightness = brightness;
	schedule_work(&data->work);
}

/* HP-specific accelerometer driver ------------------------------------ */

/* For automatic insertion of the module */
static struct acpi_device_id lis3lv02d_device_ids[] = {
	{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
	{"", 0},
};
MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);


/**
 * lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
 * @lis3: pointer to the device struct
 *
 * Returns 0 on success.
 */
int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
{
	struct acpi_device *dev = lis3->bus_priv;
	if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
				 NULL, NULL) != AE_OK)
		return -EINVAL;

	return 0;
}

/**
 * lis3lv02d_acpi_read - ACPI ALRD method: read a register
 * @lis3: pointer to the device struct
 * @reg:    the register to read
 * @ret:    result of the operation
 *
 * Returns 0 on success.
 */
int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
{
	struct acpi_device *dev = lis3->bus_priv;
	union acpi_object arg0 = { ACPI_TYPE_INTEGER };
	struct acpi_object_list args = { 1, &arg0 };
	unsigned long long lret;
	acpi_status status;

	arg0.integer.value = reg;

	status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
	*ret = lret;
	return (status != AE_OK) ? -EINVAL : 0;
}

/**
 * lis3lv02d_acpi_write - ACPI ALWR method: write to a register
 * @lis3: pointer to the device struct
 * @reg:    the register to write to
 * @val:    the value to write
 *
 * Returns 0 on success.
 */
int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
{
	struct acpi_device *dev = lis3->bus_priv;
	unsigned long long ret; /* Not used when writting */
	union acpi_object in_obj[2];
	struct acpi_object_list args = { 2, in_obj };

	in_obj[0].type          = ACPI_TYPE_INTEGER;
	in_obj[0].integer.value = reg;
	in_obj[1].type          = ACPI_TYPE_INTEGER;
	in_obj[1].integer.value = val;

	if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
		return -EINVAL;

	return 0;
}

static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
{
	lis3_dev.ac = *((struct axis_conversion *)dmi->driver_data);
	printk(KERN_INFO DRIVER_NAME ": hardware type %s found.\n", dmi->ident);

	return 1;
}

/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
 * If the value is negative, the opposite of the hw value is used. */
static struct axis_conversion lis3lv02d_axis_normal = {1, 2, 3};
static struct axis_conversion lis3lv02d_axis_y_inverted = {1, -2, 3};
static struct axis_conversion lis3lv02d_axis_x_inverted = {-1, 2, 3};
static struct axis_conversion lis3lv02d_axis_z_inverted = {1, 2, -3};
static struct axis_conversion lis3lv02d_axis_xy_rotated_left = {-2, 1, 3};
static struct axis_conversion lis3lv02d_axis_xy_rotated_left_usd = {-2, 1, -3};
static struct axis_conversion lis3lv02d_axis_xy_swap_inverted = {-2, -1, 3};
static struct axis_conversion lis3lv02d_axis_xy_rotated_right = {2, -1, 3};
static struct axis_conversion lis3lv02d_axis_xy_swap_yz_inverted = {2, -1, -3};

#define AXIS_DMI_MATCH(_ident, _name, _axis) {		\
	.ident = _ident,				\
	.callback = lis3lv02d_dmi_matched,		\
	.matches = {					\
		DMI_MATCH(DMI_PRODUCT_NAME, _name)	\
	},						\
	.driver_data = &lis3lv02d_axis_##_axis		\
}

#define AXIS_DMI_MATCH2(_ident, _class1, _name1,	\
				_class2, _name2,	\
				_axis) {		\
	.ident = _ident,				\
	.callback = lis3lv02d_dmi_matched,		\
	.matches = {					\
		DMI_MATCH(DMI_##_class1, _name1),	\
		DMI_MATCH(DMI_##_class2, _name2),	\
	},						\
	.driver_data = &lis3lv02d_axis_##_axis		\
}
static struct dmi_system_id lis3lv02d_dmi_ids[] = {
	/* product names are truncated to match all kinds of a same model */
	AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
	AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
	AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
	AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
	AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
	AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
	AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
	AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
	AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
	AXIS_DMI_MATCH("NC673x", "HP Compaq 673", xy_rotated_left_usd),
	AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
	AXIS_DMI_MATCH("NC671xx", "HP Compaq 671", xy_swap_yz_inverted),
	/* Intel-based HP Pavilion dv5 */
	AXIS_DMI_MATCH2("HPDV5_I",
			PRODUCT_NAME, "HP Pavilion dv5",
			BOARD_NAME, "3603",
			x_inverted),
	/* AMD-based HP Pavilion dv5 */
	AXIS_DMI_MATCH2("HPDV5_A",
			PRODUCT_NAME, "HP Pavilion dv5",
			BOARD_NAME, "3600",
			y_inverted),
	AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
	AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
	{ NULL, }
/* Laptop models without axis info (yet):
 * "NC6910" "HP Compaq 6910"
 * HP Compaq 8710x Notebook PC / Mobile Workstation
 * "NC2400" "HP Compaq nc2400"
 * "NX74x0" "HP Compaq nx74"
 * "NX6325" "HP Compaq nx6325"
 * "NC4400" "HP Compaq nc4400"
 */
};

static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
{
	struct acpi_device *dev = lis3_dev.bus_priv;
	unsigned long long ret; /* Not used when writing */
	union acpi_object in_obj[1];
	struct acpi_object_list args = { 1, in_obj };

	in_obj[0].type          = ACPI_TYPE_INTEGER;
	in_obj[0].integer.value = !!value;

	acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
}

static struct delayed_led_classdev hpled_led = {
	.led_classdev = {
		.name			= "hp::hddprotect",
		.default_trigger	= "none",
		.brightness_set		= delayed_sysfs_set,
		.flags                  = LED_CORE_SUSPENDRESUME,
	},
	.set_brightness = hpled_set,
};

static acpi_status
lis3lv02d_get_resource(struct acpi_resource *resource, void *context)
{
	if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
		struct acpi_resource_extended_irq *irq;
		u32 *device_irq = context;

		irq = &resource->data.extended_irq;
		*device_irq = irq->interrupts[0];
	}

	return AE_OK;
}

static void lis3lv02d_enum_resources(struct acpi_device *device)
{
	acpi_status status;

	status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
					lis3lv02d_get_resource, &lis3_dev.irq);
	if (ACPI_FAILURE(status))
		printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
}

static int lis3lv02d_add(struct acpi_device *device)
{
	int ret;

	if (!device)
		return -EINVAL;

	lis3_dev.bus_priv = device;
	lis3_dev.init = lis3lv02d_acpi_init;
	lis3_dev.read = lis3lv02d_acpi_read;
	lis3_dev.write = lis3lv02d_acpi_write;
	strcpy(acpi_device_name(device), DRIVER_NAME);
	strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
	device->driver_data = &lis3_dev;

	/* obtain IRQ number of our device from ACPI */
	lis3lv02d_enum_resources(device);

	/* If possible use a "standard" axes order */
	if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
		printk(KERN_INFO DRIVER_NAME ": laptop model unknown, "
				 "using default axes configuration\n");
		lis3_dev.ac = lis3lv02d_axis_normal;
	}

	/* call the core layer do its init */
	ret = lis3lv02d_init_device(&lis3_dev);
	if (ret)
		return ret;

	INIT_WORK(&hpled_led.work, delayed_set_status_worker);
	ret = led_classdev_register(NULL, &hpled_led.led_classdev);
	if (ret) {
		lis3lv02d_joystick_disable();
		lis3lv02d_poweroff(&lis3_dev);
		flush_work(&hpled_led.work);
		return ret;
	}

	return ret;
}

static int lis3lv02d_remove(struct acpi_device *device, int type)
{
	if (!device)
		return -EINVAL;

	lis3lv02d_joystick_disable();
	lis3lv02d_poweroff(&lis3_dev);

	flush_work(&hpled_led.work);
	led_classdev_unregister(&hpled_led.led_classdev);

	return lis3lv02d_remove_fs(&lis3_dev);
}


#ifdef CONFIG_PM
static int lis3lv02d_suspend(struct acpi_device *device, pm_message_t state)
{
	/* make sure the device is off when we suspend */
	lis3lv02d_poweroff(&lis3_dev);
	return 0;
}

static int lis3lv02d_resume(struct acpi_device *device)
{
	lis3lv02d_poweron(&lis3_dev);
	return 0;
}
#else
#define lis3lv02d_suspend NULL
#define lis3lv02d_resume NULL
#endif

/* For the HP MDPS aka 3D Driveguard */
static struct acpi_driver lis3lv02d_driver = {
	.name  = DRIVER_NAME,
	.class = ACPI_MDPS_CLASS,
	.ids   = lis3lv02d_device_ids,
	.ops = {
		.add     = lis3lv02d_add,
		.remove  = lis3lv02d_remove,
		.suspend = lis3lv02d_suspend,
		.resume  = lis3lv02d_resume,
	}
};

static int __init lis3lv02d_init_module(void)
{
	int ret;

	if (acpi_disabled)
		return -ENODEV;

	ret = acpi_bus_register_driver(&lis3lv02d_driver);
	if (ret < 0)
		return ret;

	printk(KERN_INFO DRIVER_NAME " driver loaded.\n");

	return 0;
}

static void __exit lis3lv02d_exit_module(void)
{
	acpi_bus_unregister_driver(&lis3lv02d_driver);
}

MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
MODULE_LICENSE("GPL");

module_init(lis3lv02d_init_module);
module_exit(lis3lv02d_exit_module);
Commit	Line	Data
cfce41a6 EP	1	/*
	2	* hp_accel.c - Interface between LIS3LV02DL driver and HP ACPI BIOS
	3	*
	4	* Copyright (C) 2007-2008 Yan Burman
	5	* Copyright (C) 2008 Eric Piel
9e1c9d86	6	* Copyright (C) 2008-2009 Pavel Machek
cfce41a6 EP	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22
	23	#include <linux/kernel.h>
	24	#include <linux/init.h>
	25	#include <linux/dmi.h>
	26	#include <linux/module.h>
	27	#include <linux/types.h>
	28	#include <linux/platform_device.h>
	29	#include <linux/interrupt.h>
cfce41a6 EP	30	#include <linux/delay.h>
	31	#include <linux/wait.h>
	32	#include <linux/poll.h>
	33	#include <linux/freezer.h>
cfce41a6	34	#include <linux/uaccess.h>
9e0c7978	35	#include <linux/leds.h>
cfce41a6 EP	36	#include <acpi/acpi_drivers.h>
	37	#include <asm/atomic.h>
	38	#include "lis3lv02d.h"
	39
	40	#define DRIVER_NAME "lis3lv02d"
	41	#define ACPI_MDPS_CLASS "accelerometer"
	42
9e1c9d86 PM	43	/* Delayed LEDs infrastructure ------------------------------------ */
	44
	45	/* Special LED class that can defer work */
	46	struct delayed_led_classdev {
	47	struct led_classdev led_classdev;
	48	struct work_struct work;
	49	enum led_brightness new_brightness;
	50
	51	unsigned int led; /* For driver */
	52	void (set_brightness)(struct delayed_led_classdev data, enum led_brightness value);
	53	};
	54
	55	static inline void delayed_set_status_worker(struct work_struct *work)
	56	{
	57	struct delayed_led_classdev *data =
	58	container_of(work, struct delayed_led_classdev, work);
	59
	60	data->set_brightness(data, data->new_brightness);
	61	}
	62
	63	static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
	64	enum led_brightness brightness)
	65	{
	66	struct delayed_led_classdev *data = container_of(led_cdev,
	67	struct delayed_led_classdev, led_classdev);
	68	data->new_brightness = brightness;
	69	schedule_work(&data->work);
	70	}
	71
	72	/* HP-specific accelerometer driver ------------------------------------ */
cfce41a6 EP	73
	74	/* For automatic insertion of the module */
	75	static struct acpi_device_id lis3lv02d_device_ids[] = {
	76	{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
	77	{"", 0},
	78	};
	79	MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
	80
	81
	82	/**
	83	* lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
a38da2ed	84	* @lis3: pointer to the device struct
cfce41a6	85	*
a38da2ed	86	* Returns 0 on success.
cfce41a6	87	*/
a38da2ed	88	int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
cfce41a6	89	{
a38da2ed DM	90	struct acpi_device *dev = lis3->bus_priv;
	91	if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
	92	NULL, NULL) != AE_OK)
	93	return -EINVAL;
	94
	95	return 0;
cfce41a6 EP	96	}
	97
	98	/**
	99	* lis3lv02d_acpi_read - ACPI ALRD method: read a register
a38da2ed	100	* @lis3: pointer to the device struct
cfce41a6 EP	101	* @reg: the register to read
	102	* @ret: result of the operation
	103	*
a38da2ed	104	* Returns 0 on success.
cfce41a6	105	*/
a38da2ed	106	int lis3lv02d_acpi_read(struct lis3lv02d lis3, int reg, u8 ret)
cfce41a6	107	{
a38da2ed	108	struct acpi_device *dev = lis3->bus_priv;
cfce41a6 EP	109	union acpi_object arg0 = { ACPI_TYPE_INTEGER };
	110	struct acpi_object_list args = { 1, &arg0 };
	111	unsigned long long lret;
	112	acpi_status status;
	113
	114	arg0.integer.value = reg;
	115
a38da2ed	116	status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
cfce41a6	117	*ret = lret;
a38da2ed	118	return (status != AE_OK) ? -EINVAL : 0;
cfce41a6 EP	119	}
	120
	121	/**
	122	* lis3lv02d_acpi_write - ACPI ALWR method: write to a register
a38da2ed	123	* @lis3: pointer to the device struct
cfce41a6 EP	124	* @reg: the register to write to
	125	* @val: the value to write
	126	*
a38da2ed	127	* Returns 0 on success.
cfce41a6	128	*/
a38da2ed	129	int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
cfce41a6	130	{
a38da2ed	131	struct acpi_device *dev = lis3->bus_priv;
cfce41a6 EP	132	unsigned long long ret; /* Not used when writting */
	133	union acpi_object in_obj[2];
	134	struct acpi_object_list args = { 2, in_obj };
	135
	136	in_obj[0].type = ACPI_TYPE_INTEGER;
	137	in_obj[0].integer.value = reg;
	138	in_obj[1].type = ACPI_TYPE_INTEGER;
	139	in_obj[1].integer.value = val;
	140
a38da2ed DM	141	if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
	142	return -EINVAL;
	143
	144	return 0;
cfce41a6 EP	145	}
	146
	147	static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
	148	{
be84cfc5	149	lis3_dev.ac = ((struct axis_conversion )dmi->driver_data);
cfce41a6 EP	150	printk(KERN_INFO DRIVER_NAME ": hardware type %s found.\n", dmi->ident);
	151
	152	return 1;
	153	}
	154
	155	/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
	156	* If the value is negative, the opposite of the hw value is used. */
	157	static struct axis_conversion lis3lv02d_axis_normal = {1, 2, 3};
	158	static struct axis_conversion lis3lv02d_axis_y_inverted = {1, -2, 3};
	159	static struct axis_conversion lis3lv02d_axis_x_inverted = {-1, 2, 3};
	160	static struct axis_conversion lis3lv02d_axis_z_inverted = {1, 2, -3};
	161	static struct axis_conversion lis3lv02d_axis_xy_rotated_left = {-2, 1, 3};
80eda5fb	162	static struct axis_conversion lis3lv02d_axis_xy_rotated_left_usd = {-2, 1, -3};
cfce41a6	163	static struct axis_conversion lis3lv02d_axis_xy_swap_inverted = {-2, -1, 3};
6bfef2b3	164	static struct axis_conversion lis3lv02d_axis_xy_rotated_right = {2, -1, 3};
87357d27	165	static struct axis_conversion lis3lv02d_axis_xy_swap_yz_inverted = {2, -1, -3};
cfce41a6 EP	166
	167	#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
	168	.ident = _ident, \
	169	.callback = lis3lv02d_dmi_matched, \
	170	.matches = { \
	171	DMI_MATCH(DMI_PRODUCT_NAME, _name) \
	172	}, \
	173	.driver_data = &lis3lv02d_axis_##_axis \
	174	}
9ccf3b5e GB	175
	176	#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
	177	_class2, _name2, \
	178	_axis) { \
	179	.ident = _ident, \
	180	.callback = lis3lv02d_dmi_matched, \
	181	.matches = { \
	182	DMI_MATCH(DMI_##_class1, _name1), \
	183	DMI_MATCH(DMI_##_class2, _name2), \
	184	}, \
	185	.driver_data = &lis3lv02d_axis_##_axis \
	186	}
cfce41a6 EP	187	static struct dmi_system_id lis3lv02d_dmi_ids[] = {
	188	/* product names are truncated to match all kinds of a same model */
	189	AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
	190	AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
	191	AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
	192	AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
	193	AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
	194	AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
	195	AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
9d7639d3	196	AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
80eda5fb	197	AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
c77a022d	198	AXIS_DMI_MATCH("NC673x", "HP Compaq 673", xy_rotated_left_usd),
6bfef2b3	199	AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
87357d27	200	AXIS_DMI_MATCH("NC671xx", "HP Compaq 671", xy_swap_yz_inverted),
9ccf3b5e GB	201	/* Intel-based HP Pavilion dv5 */
	202	AXIS_DMI_MATCH2("HPDV5_I",
	203	PRODUCT_NAME, "HP Pavilion dv5",
	204	BOARD_NAME, "3603",
	205	x_inverted),
	206	/* AMD-based HP Pavilion dv5 */
	207	AXIS_DMI_MATCH2("HPDV5_A",
	208	PRODUCT_NAME, "HP Pavilion dv5",
	209	BOARD_NAME, "3600",
	210	y_inverted),
9d7639d3	211	AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
12a324b6	212	AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
cfce41a6 EP	213	{ NULL, }
cfce41a6 EP	214	/* Laptop models without axis info (yet):
cfce41a6 EP	215	* "NC6910" "HP Compaq 6910"
	216	* HP Compaq 8710x Notebook PC / Mobile Workstation
	217	* "NC2400" "HP Compaq nc2400"
	218	* "NX74x0" "HP Compaq nx74"
	219	* "NX6325" "HP Compaq nx6325"
	220	* "NC4400" "HP Compaq nc4400"
	221	*/
	222	};
	223
9e1c9d86	224	static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
9e0c7978	225	{
a38da2ed	226	struct acpi_device *dev = lis3_dev.bus_priv;
9e0c7978 EP	227	unsigned long long ret; /* Not used when writing */
	228	union acpi_object in_obj[1];
	229	struct acpi_object_list args = { 1, in_obj };
	230
	231	in_obj[0].type = ACPI_TYPE_INTEGER;
9e1c9d86	232	in_obj[0].integer.value = !!value;
9e0c7978	233
a38da2ed	234	acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
9e0c7978 EP	235	}
9e0c7978 EP	236
9e1c9d86 PM	237	static struct delayed_led_classdev hpled_led = {
	238	.led_classdev = {
	239	.name = "hp::hddprotect",
	240	.default_trigger = "none",
	241	.brightness_set = delayed_sysfs_set,
	242	.flags = LED_CORE_SUSPENDRESUME,
	243	},
	244	.set_brightness = hpled_set,
9e0c7978	245	};
cfce41a6	246
ef2cfc79 PM	247	static acpi_status
	248	lis3lv02d_get_resource(struct acpi_resource resource, void context)
	249	{
	250	if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
	251	struct acpi_resource_extended_irq *irq;
	252	u32 *device_irq = context;
	253
	254	irq = &resource->data.extended_irq;
	255	*device_irq = irq->interrupts[0];
	256	}
	257
	258	return AE_OK;
	259	}
	260
	261	static void lis3lv02d_enum_resources(struct acpi_device *device)
	262	{
	263	acpi_status status;
	264
	265	status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
be84cfc5	266	lis3lv02d_get_resource, &lis3_dev.irq);
ef2cfc79 PM	267	if (ACPI_FAILURE(status))
	268	printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
	269	}
	270
cfce41a6 EP	271	static int lis3lv02d_add(struct acpi_device *device)
cfce41a6 EP	272	{
9e0c7978	273	int ret;
cfce41a6 EP	274
	275	if (!device)
	276	return -EINVAL;
	277
a38da2ed	278	lis3_dev.bus_priv = device;
be84cfc5 PM	279	lis3_dev.init = lis3lv02d_acpi_init;
	280	lis3_dev.read = lis3lv02d_acpi_read;
	281	lis3_dev.write = lis3lv02d_acpi_write;
cfce41a6 EP	282	strcpy(acpi_device_name(device), DRIVER_NAME);
cfce41a6 EP	283	strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
be84cfc5	284	device->driver_data = &lis3_dev;
cfce41a6	285
a38da2ed DM	286	/* obtain IRQ number of our device from ACPI */
a38da2ed DM	287	lis3lv02d_enum_resources(device);
cfce41a6 EP	288
	289	/* If possible use a "standard" axes order */
	290	if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
	291	printk(KERN_INFO DRIVER_NAME ": laptop model unknown, "
	292	"using default axes configuration\n");
be84cfc5	293	lis3_dev.ac = lis3lv02d_axis_normal;
cfce41a6 EP	294	}
cfce41a6 EP	295
a38da2ed DM	296	/* call the core layer do its init */
a38da2ed DM	297	ret = lis3lv02d_init_device(&lis3_dev);
9e0c7978 EP	298	if (ret)
	299	return ret;
	300
a38da2ed DM	301	INIT_WORK(&hpled_led.work, delayed_set_status_worker);
a38da2ed DM	302	ret = led_classdev_register(NULL, &hpled_led.led_classdev);
9e0c7978	303	if (ret) {
a38da2ed DM	304	lis3lv02d_joystick_disable();
a38da2ed DM	305	lis3lv02d_poweroff(&lis3_dev);
9e1c9d86	306	flush_work(&hpled_led.work);
9e0c7978 EP	307	return ret;
	308	}
	309
	310	return ret;
cfce41a6 EP	311	}
	312
	313	static int lis3lv02d_remove(struct acpi_device *device, int type)
	314	{
	315	if (!device)
	316	return -EINVAL;
	317
	318	lis3lv02d_joystick_disable();
a38da2ed	319	lis3lv02d_poweroff(&lis3_dev);
cfce41a6	320
9e1c9d86 PM	321	flush_work(&hpled_led.work);
9e1c9d86 PM	322	led_classdev_unregister(&hpled_led.led_classdev);
9e0c7978	323
a002ee89	324	return lis3lv02d_remove_fs(&lis3_dev);
cfce41a6 EP	325	}
	326
	327
	328	#ifdef CONFIG_PM
	329	static int lis3lv02d_suspend(struct acpi_device *device, pm_message_t state)
	330	{
	331	/* make sure the device is off when we suspend */
a38da2ed	332	lis3lv02d_poweroff(&lis3_dev);
cfce41a6 EP	333	return 0;
	334	}
	335
	336	static int lis3lv02d_resume(struct acpi_device *device)
	337	{
a002ee89	338	lis3lv02d_poweron(&lis3_dev);
cfce41a6 EP	339	return 0;
	340	}
	341	#else
	342	#define lis3lv02d_suspend NULL
	343	#define lis3lv02d_resume NULL
	344	#endif
	345
	346	/* For the HP MDPS aka 3D Driveguard */
	347	static struct acpi_driver lis3lv02d_driver = {
	348	.name = DRIVER_NAME,
	349	.class = ACPI_MDPS_CLASS,
	350	.ids = lis3lv02d_device_ids,
	351	.ops = {
	352	.add = lis3lv02d_add,
	353	.remove = lis3lv02d_remove,
	354	.suspend = lis3lv02d_suspend,
	355	.resume = lis3lv02d_resume,
	356	}
	357	};
	358
	359	static int __init lis3lv02d_init_module(void)
	360	{
	361	int ret;
	362
	363	if (acpi_disabled)
	364	return -ENODEV;
	365
	366	ret = acpi_bus_register_driver(&lis3lv02d_driver);
	367	if (ret < 0)
	368	return ret;
	369
	370	printk(KERN_INFO DRIVER_NAME " driver loaded.\n");
	371
	372	return 0;
	373	}
	374
	375	static void __exit lis3lv02d_exit_module(void)
	376	{
	377	acpi_bus_unregister_driver(&lis3lv02d_driver);
	378	}
	379
9e0c7978	380	MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
cfce41a6 EP	381	MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
	382	MODULE_LICENSE("GPL");
	383
	384	module_init(lis3lv02d_init_module);
	385	module_exit(lis3lv02d_exit_module);
	386