[deliverable/linux.git] / drivers / platform / x86 / 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
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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 <linux/atomic.h>
#include <linux/acpi.h>
#include <linux/i8042.h>
#include <linux/serio.h>
#include "../../misc/lis3lv02d/lis3lv02d.h"

#define DRIVER_NAME     "hp_accel"
#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 ------------------------------------ */

/* e0 25, e0 26, e0 27, e0 28 are scan codes that the accelerometer with acpi id
 * HPQ6000 sends through the keyboard bus */
#define ACCEL_1 0x25
#define ACCEL_2 0x26
#define ACCEL_3 0x27
#define ACCEL_4 0x28

/* For automatic insertion of the module */
static const struct acpi_device_id lis3lv02d_device_ids[] = {
	{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
	{"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
	{"HPQ6007", 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.
 */
static 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.
 */
static 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);
	if (ACPI_FAILURE(status))
		return -EINVAL;
	*ret = lret;
	return 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.
 */
static 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 = *((union axis_conversion *)dmi->driver_data);
	pr_info("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. */
#define DEFINE_CONV(name, x, y, z)			      \
	static union axis_conversion lis3lv02d_axis_##name = \
		{ .as_array = { x, y, z } }
DEFINE_CONV(normal, 1, 2, 3);
DEFINE_CONV(y_inverted, 1, -2, 3);
DEFINE_CONV(x_inverted, -1, 2, 3);
DEFINE_CONV(x_inverted_usd, -1, 2, -3);
DEFINE_CONV(z_inverted, 1, 2, -3);
DEFINE_CONV(xy_swap, 2, 1, 3);
DEFINE_CONV(xy_rotated_left, -2, 1, 3);
DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3);
DEFINE_CONV(xy_swap_inverted, -2, -1, 3);
DEFINE_CONV(xy_rotated_right, 2, -1, 3);
DEFINE_CONV(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 const 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("NC2710", "HP Compaq 2710", xy_swap),
	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("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
	AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
	AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
	AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
	AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
	AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
	AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
	AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
	AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_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),
	AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
	AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
	AXIS_DMI_MATCH("HPB440G3", "HP ProBook 440 G3", x_inverted_usd),
	AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
	AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
	AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
	AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
	AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
	AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
	AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
	AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
	AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
	AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
	AXIS_DMI_MATCH("HPZBook15", "HP ZBook 15", x_inverted),
	{ NULL, }
/* Laptop models without axis info (yet):
 * "NC6910" "HP Compaq 6910"
 * "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 bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
				  struct serio *port)
{
	static bool extended;

	if (str & I8042_STR_AUXDATA)
		return false;

	if (data == 0xe0) {
		extended = true;
		return true;
	} else if (unlikely(extended)) {
		extended = false;

		switch (data) {
		case ACCEL_1:
		case ACCEL_2:
		case ACCEL_3:
		case ACCEL_4:
			return true;
		default:
			serio_interrupt(port, 0xe0, 0);
			return false;
		}
	}

	return false;
}

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 (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
		pr_info("Using custom axes %d,%d,%d\n",
			lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
	} else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
		pr_info("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;

	/* filter to remove HPQ6000 accelerometer data
	 * from keyboard bus stream */
	if (strstr(dev_name(&device->dev), "HPQ6000"))
		i8042_install_filter(hp_accel_i8042_filter);

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

	return ret;
}

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

	i8042_remove_filter(hp_accel_i8042_filter);
	lis3lv02d_joystick_disable(&lis3_dev);
	lis3lv02d_poweroff(&lis3_dev);

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

	return lis3lv02d_remove_fs(&lis3_dev);
}


#ifdef CONFIG_PM_SLEEP
static int lis3lv02d_suspend(struct device *dev)
{
	/* make sure the device is off when we suspend */
	lis3lv02d_poweroff(&lis3_dev);
	return 0;
}

static int lis3lv02d_resume(struct device *dev)
{
	lis3lv02d_poweron(&lis3_dev);
	return 0;
}

static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
#define HP_ACCEL_PM (&hp_accel_pm)
#else
#define HP_ACCEL_PM 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,
	},
	.drv.pm = HP_ACCEL_PM,
};
module_acpi_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");
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
53ab0e68 JP	23	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
53ab0e68 JP	24
cfce41a6 EP	25	#include <linux/kernel.h>
	26	#include <linux/init.h>
	27	#include <linux/dmi.h>
	28	#include <linux/module.h>
	29	#include <linux/types.h>
	30	#include <linux/platform_device.h>
	31	#include <linux/interrupt.h>
cfce41a6 EP	32	#include <linux/delay.h>
	33	#include <linux/wait.h>
	34	#include <linux/poll.h>
	35	#include <linux/freezer.h>
cfce41a6	36	#include <linux/uaccess.h>
9e0c7978	37	#include <linux/leds.h>
efcfed9b	38	#include <linux/atomic.h>
8b48463f	39	#include <linux/acpi.h>
a4c724d0 GS	40	#include <linux/i8042.h>
a4c724d0 GS	41	#include <linux/serio.h>
ff606677	42	#include "../../misc/lis3lv02d/lis3lv02d.h"
cfce41a6	43
96b4b9bf	44	#define DRIVER_NAME "hp_accel"
cfce41a6 EP	45	#define ACPI_MDPS_CLASS "accelerometer"
cfce41a6 EP	46
9e1c9d86 PM	47	/* Delayed LEDs infrastructure ------------------------------------ */
	48
	49	/* Special LED class that can defer work */
	50	struct delayed_led_classdev {
	51	struct led_classdev led_classdev;
	52	struct work_struct work;
	53	enum led_brightness new_brightness;
	54
	55	unsigned int led; /* For driver */
	56	void (set_brightness)(struct delayed_led_classdev data, enum led_brightness value);
	57	};
	58
	59	static inline void delayed_set_status_worker(struct work_struct *work)
	60	{
	61	struct delayed_led_classdev *data =
	62	container_of(work, struct delayed_led_classdev, work);
	63
	64	data->set_brightness(data, data->new_brightness);
	65	}
	66
	67	static inline void delayed_sysfs_set(struct led_classdev *led_cdev,
	68	enum led_brightness brightness)
	69	{
	70	struct delayed_led_classdev *data = container_of(led_cdev,
	71	struct delayed_led_classdev, led_classdev);
	72	data->new_brightness = brightness;
	73	schedule_work(&data->work);
	74	}
	75
	76	/* HP-specific accelerometer driver ------------------------------------ */
cfce41a6	77
a4c724d0 GS	78	/* e0 25, e0 26, e0 27, e0 28 are scan codes that the accelerometer with acpi id
	79	* HPQ6000 sends through the keyboard bus */
	80	#define ACCEL_1 0x25
	81	#define ACCEL_2 0x26
	82	#define ACCEL_3 0x27
	83	#define ACCEL_4 0x28
	84
cfce41a6	85	/* For automatic insertion of the module */
8a1a970a	86	static const struct acpi_device_id lis3lv02d_device_ids[] = {
cfce41a6	87	{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
24570d22	88	{"HPQ6000", 0}, /* HP Mobile Data Protection System PNP */
b0ad4ff3	89	{"HPQ6007", 0}, /* HP Mobile Data Protection System PNP */
cfce41a6 EP	90	{"", 0},
	91	};
	92	MODULE_DEVICE_TABLE(acpi, lis3lv02d_device_ids);
	93
	94
	95	/**
	96	* lis3lv02d_acpi_init - ACPI _INI method: initialize the device.
a38da2ed	97	* @lis3: pointer to the device struct
cfce41a6	98	*
a38da2ed	99	* Returns 0 on success.
cfce41a6	100	*/
04b73387	101	static int lis3lv02d_acpi_init(struct lis3lv02d *lis3)
cfce41a6	102	{
a38da2ed DM	103	struct acpi_device *dev = lis3->bus_priv;
	104	if (acpi_evaluate_object(dev->handle, METHOD_NAME__INI,
	105	NULL, NULL) != AE_OK)
	106	return -EINVAL;
	107
	108	return 0;
cfce41a6 EP	109	}
	110
	111	/**
	112	* lis3lv02d_acpi_read - ACPI ALRD method: read a register
a38da2ed	113	* @lis3: pointer to the device struct
cfce41a6 EP	114	* @reg: the register to read
	115	* @ret: result of the operation
	116	*
a38da2ed	117	* Returns 0 on success.
cfce41a6	118	*/
04b73387	119	static int lis3lv02d_acpi_read(struct lis3lv02d lis3, int reg, u8 ret)
cfce41a6	120	{
a38da2ed	121	struct acpi_device *dev = lis3->bus_priv;
cfce41a6 EP	122	union acpi_object arg0 = { ACPI_TYPE_INTEGER };
	123	struct acpi_object_list args = { 1, &arg0 };
	124	unsigned long long lret;
	125	acpi_status status;
	126
	127	arg0.integer.value = reg;
	128
a38da2ed	129	status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
ff22b480 DC	130	if (ACPI_FAILURE(status))
ff22b480 DC	131	return -EINVAL;
cfce41a6	132	*ret = lret;
ff22b480	133	return 0;
cfce41a6 EP	134	}
	135
	136	/**
	137	* lis3lv02d_acpi_write - ACPI ALWR method: write to a register
a38da2ed	138	* @lis3: pointer to the device struct
cfce41a6 EP	139	* @reg: the register to write to
	140	* @val: the value to write
	141	*
a38da2ed	142	* Returns 0 on success.
cfce41a6	143	*/
04b73387	144	static int lis3lv02d_acpi_write(struct lis3lv02d *lis3, int reg, u8 val)
cfce41a6	145	{
a38da2ed	146	struct acpi_device *dev = lis3->bus_priv;
cfce41a6 EP	147	unsigned long long ret; /* Not used when writting */
	148	union acpi_object in_obj[2];
	149	struct acpi_object_list args = { 2, in_obj };
	150
	151	in_obj[0].type = ACPI_TYPE_INTEGER;
	152	in_obj[0].integer.value = reg;
	153	in_obj[1].type = ACPI_TYPE_INTEGER;
	154	in_obj[1].integer.value = val;
	155
a38da2ed DM	156	if (acpi_evaluate_integer(dev->handle, "ALWR", &args, &ret) != AE_OK)
	157	return -EINVAL;
	158
	159	return 0;
cfce41a6 EP	160	}
	161
	162	static int lis3lv02d_dmi_matched(const struct dmi_system_id *dmi)
	163	{
2ee32144	164	lis3_dev.ac = ((union axis_conversion )dmi->driver_data);
53ab0e68	165	pr_info("hardware type %s found\n", dmi->ident);
cfce41a6 EP	166
	167	return 1;
	168	}
	169
	170	/* Represents, for each axis seen by userspace, the corresponding hw axis (+1).
	171	* If the value is negative, the opposite of the hw value is used. */
2ee32144 TI	172	#define DEFINE_CONV(name, x, y, z) \
	173	static union axis_conversion lis3lv02d_axis_##name = \
	174	{ .as_array = { x, y, z } }
	175	DEFINE_CONV(normal, 1, 2, 3);
	176	DEFINE_CONV(y_inverted, 1, -2, 3);
	177	DEFINE_CONV(x_inverted, -1, 2, 3);
330a1065	178	DEFINE_CONV(x_inverted_usd, -1, 2, -3);
2ee32144 TI	179	DEFINE_CONV(z_inverted, 1, 2, -3);
	180	DEFINE_CONV(xy_swap, 2, 1, 3);
	181	DEFINE_CONV(xy_rotated_left, -2, 1, 3);
	182	DEFINE_CONV(xy_rotated_left_usd, -2, 1, -3);
	183	DEFINE_CONV(xy_swap_inverted, -2, -1, 3);
	184	DEFINE_CONV(xy_rotated_right, 2, -1, 3);
	185	DEFINE_CONV(xy_swap_yz_inverted, 2, -1, -3);
cfce41a6 EP	186
	187	#define AXIS_DMI_MATCH(_ident, _name, _axis) { \
	188	.ident = _ident, \
	189	.callback = lis3lv02d_dmi_matched, \
	190	.matches = { \
	191	DMI_MATCH(DMI_PRODUCT_NAME, _name) \
	192	}, \
	193	.driver_data = &lis3lv02d_axis_##_axis \
	194	}
9ccf3b5e GB	195
	196	#define AXIS_DMI_MATCH2(_ident, _class1, _name1, \
	197	_class2, _name2, \
	198	_axis) { \
	199	.ident = _ident, \
	200	.callback = lis3lv02d_dmi_matched, \
	201	.matches = { \
	202	DMI_MATCH(DMI_##_class1, _name1), \
	203	DMI_MATCH(DMI_##_class2, _name2), \
	204	}, \
	205	.driver_data = &lis3lv02d_axis_##_axis \
	206	}
8a1a970a	207	static const struct dmi_system_id lis3lv02d_dmi_ids[] = {
cfce41a6 EP	208	/* product names are truncated to match all kinds of a same model */
	209	AXIS_DMI_MATCH("NC64x0", "HP Compaq nc64", x_inverted),
	210	AXIS_DMI_MATCH("NC84x0", "HP Compaq nc84", z_inverted),
	211	AXIS_DMI_MATCH("NX9420", "HP Compaq nx9420", x_inverted),
	212	AXIS_DMI_MATCH("NW9440", "HP Compaq nw9440", x_inverted),
	213	AXIS_DMI_MATCH("NC2510", "HP Compaq 2510", y_inverted),
0093716e	214	AXIS_DMI_MATCH("NC2710", "HP Compaq 2710", xy_swap),
cfce41a6 EP	215	AXIS_DMI_MATCH("NC8510", "HP Compaq 8510", xy_swap_inverted),
cfce41a6 EP	216	AXIS_DMI_MATCH("HP2133", "HP 2133", xy_rotated_left),
9d7639d3	217	AXIS_DMI_MATCH("HP2140", "HP 2140", xy_swap_inverted),
80eda5fb	218	AXIS_DMI_MATCH("NC653x", "HP Compaq 653", xy_rotated_left_usd),
a03018ff PH	219	AXIS_DMI_MATCH("NC6730b", "HP Compaq 6730b", xy_rotated_left_usd),
a03018ff PH	220	AXIS_DMI_MATCH("NC6730s", "HP Compaq 6730s", xy_swap),
6bfef2b3	221	AXIS_DMI_MATCH("NC651xx", "HP Compaq 651", xy_rotated_right),
0093716e EP	222	AXIS_DMI_MATCH("NC6710x", "HP Compaq 6710", xy_swap_yz_inverted),
	223	AXIS_DMI_MATCH("NC6715x", "HP Compaq 6715", y_inverted),
	224	AXIS_DMI_MATCH("NC693xx", "HP EliteBook 693", xy_rotated_right),
af19611c	225	AXIS_DMI_MATCH("NC693xx", "HP EliteBook 853", xy_swap),
cdeaf622	226	AXIS_DMI_MATCH("NC854xx", "HP EliteBook 854", y_inverted),
a17b81be	227	AXIS_DMI_MATCH("NC273xx", "HP EliteBook 273", y_inverted),
9ccf3b5e GB	228	/* Intel-based HP Pavilion dv5 */
	229	AXIS_DMI_MATCH2("HPDV5_I",
	230	PRODUCT_NAME, "HP Pavilion dv5",
	231	BOARD_NAME, "3603",
	232	x_inverted),
	233	/* AMD-based HP Pavilion dv5 */
	234	AXIS_DMI_MATCH2("HPDV5_A",
	235	PRODUCT_NAME, "HP Pavilion dv5",
	236	BOARD_NAME, "3600",
	237	y_inverted),
9d7639d3	238	AXIS_DMI_MATCH("DV7", "HP Pavilion dv7", x_inverted),
12a324b6	239	AXIS_DMI_MATCH("HP8710", "HP Compaq 8710", y_inverted),
2545f038	240	AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),
9bd14a83	241	AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),
330a1065	242	AXIS_DMI_MATCH("HPB440G3", "HP ProBook 440 G3", x_inverted_usd),
9bd14a83 TI	243	AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),
	244	AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),
	245	AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),
4e70598c	246	AXIS_DMI_MATCH("HPB532x", "HP ProBook 532", y_inverted),
d0b6a971	247	AXIS_DMI_MATCH("HPB655x", "HP ProBook 655", xy_swap_inverted),
37394050	248	AXIS_DMI_MATCH("Mini510x", "HP Mini 510", xy_rotated_left_usd),
85003c38 TI	249	AXIS_DMI_MATCH("HPB63xx", "HP ProBook 63", xy_swap),
	250	AXIS_DMI_MATCH("HPB64xx", "HP ProBook 64", xy_swap),
	251	AXIS_DMI_MATCH("HPB64xx", "HP EliteBook 84", xy_swap),
	252	AXIS_DMI_MATCH("HPB65xx", "HP ProBook 65", x_inverted),
6583659e	253	AXIS_DMI_MATCH("HPZBook15", "HP ZBook 15", x_inverted),
cfce41a6 EP	254	{ NULL, }
cfce41a6 EP	255	/* Laptop models without axis info (yet):
cfce41a6	256	* "NC6910" "HP Compaq 6910"
cfce41a6 EP	257	* "NC2400" "HP Compaq nc2400"
	258	* "NX74x0" "HP Compaq nx74"
	259	* "NX6325" "HP Compaq nx6325"
	260	* "NC4400" "HP Compaq nc4400"
	261	*/
	262	};
	263
9e1c9d86	264	static void hpled_set(struct delayed_led_classdev *led_cdev, enum led_brightness value)
9e0c7978	265	{
a38da2ed	266	struct acpi_device *dev = lis3_dev.bus_priv;
9e0c7978 EP	267	unsigned long long ret; /* Not used when writing */
	268	union acpi_object in_obj[1];
	269	struct acpi_object_list args = { 1, in_obj };
	270
	271	in_obj[0].type = ACPI_TYPE_INTEGER;
9e1c9d86	272	in_obj[0].integer.value = !!value;
9e0c7978	273
a38da2ed	274	acpi_evaluate_integer(dev->handle, "ALED", &args, &ret);
9e0c7978 EP	275	}
9e0c7978 EP	276
9e1c9d86 PM	277	static struct delayed_led_classdev hpled_led = {
	278	.led_classdev = {
	279	.name = "hp::hddprotect",
	280	.default_trigger = "none",
	281	.brightness_set = delayed_sysfs_set,
	282	.flags = LED_CORE_SUSPENDRESUME,
	283	},
	284	.set_brightness = hpled_set,
9e0c7978	285	};
cfce41a6	286
ef2cfc79 PM	287	static acpi_status
	288	lis3lv02d_get_resource(struct acpi_resource resource, void context)
	289	{
	290	if (resource->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
	291	struct acpi_resource_extended_irq *irq;
	292	u32 *device_irq = context;
	293
	294	irq = &resource->data.extended_irq;
	295	*device_irq = irq->interrupts[0];
	296	}
	297
	298	return AE_OK;
	299	}
	300
	301	static void lis3lv02d_enum_resources(struct acpi_device *device)
	302	{
	303	acpi_status status;
	304
	305	status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
be84cfc5	306	lis3lv02d_get_resource, &lis3_dev.irq);
ef2cfc79 PM	307	if (ACPI_FAILURE(status))
	308	printk(KERN_DEBUG DRIVER_NAME ": Error getting resources\n");
	309	}
	310
a4c724d0 GS	311	static bool hp_accel_i8042_filter(unsigned char data, unsigned char str,
	312	struct serio *port)
	313	{
	314	static bool extended;
	315
	316	if (str & I8042_STR_AUXDATA)
	317	return false;
	318
	319	if (data == 0xe0) {
	320	extended = true;
	321	return true;
	322	} else if (unlikely(extended)) {
	323	extended = false;
	324
	325	switch (data) {
	326	case ACCEL_1:
	327	case ACCEL_2:
	328	case ACCEL_3:
	329	case ACCEL_4:
	330	return true;
	331	default:
	332	serio_interrupt(port, 0xe0, 0);
	333	return false;
	334	}
	335	}
	336
	337	return false;
	338	}
	339
cfce41a6 EP	340	static int lis3lv02d_add(struct acpi_device *device)
cfce41a6 EP	341	{
9e0c7978	342	int ret;
cfce41a6 EP	343
	344	if (!device)
	345	return -EINVAL;
	346
a38da2ed	347	lis3_dev.bus_priv = device;
be84cfc5 PM	348	lis3_dev.init = lis3lv02d_acpi_init;
	349	lis3_dev.read = lis3lv02d_acpi_read;
	350	lis3_dev.write = lis3lv02d_acpi_write;
cfce41a6 EP	351	strcpy(acpi_device_name(device), DRIVER_NAME);
cfce41a6 EP	352	strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
be84cfc5	353	device->driver_data = &lis3_dev;
cfce41a6	354
a38da2ed DM	355	/* obtain IRQ number of our device from ACPI */
a38da2ed DM	356	lis3lv02d_enum_resources(device);
cfce41a6 EP	357
cfce41a6 EP	358	/* If possible use a "standard" axes order */
2ee32144	359	if (lis3_dev.ac.x && lis3_dev.ac.y && lis3_dev.ac.z) {
53ab0e68 JP	360	pr_info("Using custom axes %d,%d,%d\n",
53ab0e68 JP	361	lis3_dev.ac.x, lis3_dev.ac.y, lis3_dev.ac.z);
2ee32144	362	} else if (dmi_check_system(lis3lv02d_dmi_ids) == 0) {
53ab0e68	363	pr_info("laptop model unknown, using default axes configuration\n");
be84cfc5	364	lis3_dev.ac = lis3lv02d_axis_normal;
cfce41a6 EP	365	}
cfce41a6 EP	366
a38da2ed DM	367	/* call the core layer do its init */
a38da2ed DM	368	ret = lis3lv02d_init_device(&lis3_dev);
9e0c7978 EP	369	if (ret)
	370	return ret;
	371
a4c724d0 GS	372	/* filter to remove HPQ6000 accelerometer data
	373	* from keyboard bus stream */
	374	if (strstr(dev_name(&device->dev), "HPQ6000"))
	375	i8042_install_filter(hp_accel_i8042_filter);
	376
a38da2ed DM	377	INIT_WORK(&hpled_led.work, delayed_set_status_worker);
a38da2ed DM	378	ret = led_classdev_register(NULL, &hpled_led.led_classdev);
9e0c7978	379	if (ret) {
e1e5687d	380	lis3lv02d_joystick_disable(&lis3_dev);
a38da2ed	381	lis3lv02d_poweroff(&lis3_dev);
9e1c9d86	382	flush_work(&hpled_led.work);
9e0c7978 EP	383	return ret;
	384	}
	385
	386	return ret;
cfce41a6 EP	387	}
cfce41a6 EP	388
51fac838	389	static int lis3lv02d_remove(struct acpi_device *device)
cfce41a6 EP	390	{
	391	if (!device)
	392	return -EINVAL;
	393
a4c724d0	394	i8042_remove_filter(hp_accel_i8042_filter);
e1e5687d	395	lis3lv02d_joystick_disable(&lis3_dev);
a38da2ed	396	lis3lv02d_poweroff(&lis3_dev);
cfce41a6	397
9e1c9d86	398	led_classdev_unregister(&hpled_led.led_classdev);
06efbeb4	399	flush_work(&hpled_led.work);
9e0c7978	400
a002ee89	401	return lis3lv02d_remove_fs(&lis3_dev);
cfce41a6 EP	402	}
	403
	404
3567a4e2	405	#ifdef CONFIG_PM_SLEEP
4ce05b42	406	static int lis3lv02d_suspend(struct device *dev)
cfce41a6 EP	407	{
cfce41a6 EP	408	/* make sure the device is off when we suspend */
a38da2ed	409	lis3lv02d_poweroff(&lis3_dev);
cfce41a6 EP	410	return 0;
	411	}
	412
4ce05b42	413	static int lis3lv02d_resume(struct device *dev)
cfce41a6	414	{
77838199 SK	415	lis3lv02d_poweron(&lis3_dev);
77838199 SK	416	return 0;
cfce41a6	417	}
4ce05b42 RW	418
	419	static SIMPLE_DEV_PM_OPS(hp_accel_pm, lis3lv02d_suspend, lis3lv02d_resume);
	420	#define HP_ACCEL_PM (&hp_accel_pm)
cfce41a6	421	#else
4ce05b42	422	#define HP_ACCEL_PM NULL
cfce41a6 EP	423	#endif
	424
	425	/* For the HP MDPS aka 3D Driveguard */
	426	static struct acpi_driver lis3lv02d_driver = {
	427	.name = DRIVER_NAME,
	428	.class = ACPI_MDPS_CLASS,
	429	.ids = lis3lv02d_device_ids,
	430	.ops = {
	431	.add = lis3lv02d_add,
	432	.remove = lis3lv02d_remove,
4ce05b42 RW	433	},
4ce05b42 RW	434	.drv.pm = HP_ACCEL_PM,
cfce41a6	435	};
46f6471c	436	module_acpi_driver(lis3lv02d_driver);
cfce41a6	437
9e0c7978	438	MODULE_DESCRIPTION("Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.");
cfce41a6 EP	439	MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
cfce41a6 EP	440	MODULE_LICENSE("GPL");