[deliverable/linux.git] / drivers / platform / x86 / hp-wmi.c

/*
 * HP WMI hotkeys
 *
 * Copyright (C) 2008 Red Hat <mjg@redhat.com>
 *
 * Portions based on wistron_btns.c:
 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
 *
 *  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/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/input.h>
#include <acpi/acpi_drivers.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/rfkill.h>
#include <linux/string.h>

MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
MODULE_LICENSE("GPL");

MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");

#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"

#define HPWMI_DISPLAY_QUERY 0x1
#define HPWMI_HDDTEMP_QUERY 0x2
#define HPWMI_ALS_QUERY 0x3
#define HPWMI_DOCK_QUERY 0x4
#define HPWMI_WIRELESS_QUERY 0x5
#define HPWMI_HOTKEY_QUERY 0xc

static int __init hp_wmi_bios_setup(struct platform_device *device);
static int __exit hp_wmi_bios_remove(struct platform_device *device);
static int hp_wmi_resume_handler(struct platform_device *device);

struct bios_args {
	u32 signature;
	u32 command;
	u32 commandtype;
	u32 datasize;
	u32 data;
};

struct bios_return {
	u32 sigpass;
	u32 return_code;
	u32 value;
};

struct key_entry {
	char type;		/* See KE_* below */
	u16 code;
	u16 keycode;
};

enum { KE_KEY, KE_SW, KE_END };

static struct key_entry hp_wmi_keymap[] = {
	{KE_SW, 0x01, SW_DOCK},
	{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
	{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
	{KE_KEY, 0x20e6, KEY_PROG1},
	{KE_KEY, 0x2142, KEY_MEDIA},
	{KE_KEY, 0x213b, KEY_INFO},
	{KE_KEY, 0x231b, KEY_HELP},
	{KE_END, 0}
};

static struct input_dev *hp_wmi_input_dev;
static struct platform_device *hp_wmi_platform_dev;

static struct rfkill *wifi_rfkill;
static struct rfkill *bluetooth_rfkill;
static struct rfkill *wwan_rfkill;

static struct platform_driver hp_wmi_driver = {
	.driver = {
		   .name = "hp-wmi",
		   .owner = THIS_MODULE,
	},
	.probe = hp_wmi_bios_setup,
	.remove = hp_wmi_bios_remove,
	.resume = hp_wmi_resume_handler,
};

static int hp_wmi_perform_query(int query, int write, int value)
{
	struct bios_return bios_return;
	acpi_status status;
	union acpi_object *obj;
	struct bios_args args = {
		.signature = 0x55434553,
		.command = write ? 0x2 : 0x1,
		.commandtype = query,
		.datasize = write ? 0x4 : 0,
		.data = value,
	};
	struct acpi_buffer input = { sizeof(struct bios_args), &args };
	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };

	status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);

	obj = output.pointer;

	if (!obj || obj->type != ACPI_TYPE_BUFFER)
		return -EINVAL;

	bios_return = *((struct bios_return *)obj->buffer.pointer);
	if (bios_return.return_code > 0)
		return bios_return.return_code * -1;
	else
		return bios_return.value;
}

static int hp_wmi_display_state(void)
{
	return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0);
}

static int hp_wmi_hddtemp_state(void)
{
	return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0);
}

static int hp_wmi_als_state(void)
{
	return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0);
}

static int hp_wmi_dock_state(void)
{
	return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
}

static int hp_wmi_wifi_set(void *data, enum rfkill_state state)
{
	if (state)
		return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101);
	else
		return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100);
}

static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state)
{
	if (state)
		return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202);
	else
		return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200);
}

static int hp_wmi_wwan_set(void *data, enum rfkill_state state)
{
	if (state)
		return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404);
	else
		return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400);
}

static int hp_wmi_wifi_state(void)
{
	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);

	if (wireless & 0x100)
		return RFKILL_STATE_UNBLOCKED;
	else
		return RFKILL_STATE_SOFT_BLOCKED;
}

static int hp_wmi_bluetooth_state(void)
{
	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);

	if (wireless & 0x10000)
		return RFKILL_STATE_UNBLOCKED;
	else
		return RFKILL_STATE_SOFT_BLOCKED;
}

static int hp_wmi_wwan_state(void)
{
	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);

	if (wireless & 0x1000000)
		return RFKILL_STATE_UNBLOCKED;
	else
		return RFKILL_STATE_SOFT_BLOCKED;
}

static ssize_t show_display(struct device *dev, struct device_attribute *attr,
			    char *buf)
{
	int value = hp_wmi_display_state();
	if (value < 0)
		return -EINVAL;
	return sprintf(buf, "%d\n", value);
}

static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
			    char *buf)
{
	int value = hp_wmi_hddtemp_state();
	if (value < 0)
		return -EINVAL;
	return sprintf(buf, "%d\n", value);
}

static ssize_t show_als(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	int value = hp_wmi_als_state();
	if (value < 0)
		return -EINVAL;
	return sprintf(buf, "%d\n", value);
}

static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	int value = hp_wmi_dock_state();
	if (value < 0)
		return -EINVAL;
	return sprintf(buf, "%d\n", value);
}

static ssize_t set_als(struct device *dev, struct device_attribute *attr,
		       const char *buf, size_t count)
{
	u32 tmp = simple_strtoul(buf, NULL, 10);
	hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
	return count;
}

static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);

static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
{
	struct key_entry *key;

	for (key = hp_wmi_keymap; key->type != KE_END; key++)
		if (code == key->code)
			return key;

	return NULL;
}

static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode)
{
	struct key_entry *key;

	for (key = hp_wmi_keymap; key->type != KE_END; key++)
		if (key->type == KE_KEY && keycode == key->keycode)
			return key;

	return NULL;
}

static int hp_wmi_getkeycode(struct input_dev *dev, int scancode, int *keycode)
{
	struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);

	if (key && key->type == KE_KEY) {
		*keycode = key->keycode;
		return 0;
	}

	return -EINVAL;
}

static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
{
	struct key_entry *key;
	int old_keycode;

	if (keycode < 0 || keycode > KEY_MAX)
		return -EINVAL;

	key = hp_wmi_get_entry_by_scancode(scancode);
	if (key && key->type == KE_KEY) {
		old_keycode = key->keycode;
		key->keycode = keycode;
		set_bit(keycode, dev->keybit);
		if (!hp_wmi_get_entry_by_keycode(old_keycode))
			clear_bit(old_keycode, dev->keybit);
		return 0;
	}

	return -EINVAL;
}

static void hp_wmi_notify(u32 value, void *context)
{
	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
	static struct key_entry *key;
	union acpi_object *obj;

	wmi_get_event_data(value, &response);

	obj = (union acpi_object *)response.pointer;

	if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) {
		int eventcode = *((u8 *) obj->buffer.pointer);
		if (eventcode == 0x4)
			eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
							 0);
		key = hp_wmi_get_entry_by_scancode(eventcode);
		if (key) {
			switch (key->type) {
			case KE_KEY:
				input_report_key(hp_wmi_input_dev,
						 key->keycode, 1);
				input_sync(hp_wmi_input_dev);
				input_report_key(hp_wmi_input_dev,
						 key->keycode, 0);
				input_sync(hp_wmi_input_dev);
				break;
			case KE_SW:
				input_report_switch(hp_wmi_input_dev,
						    key->keycode,
						    hp_wmi_dock_state());
				input_sync(hp_wmi_input_dev);
				break;
			}
		} else if (eventcode == 0x5) {
			if (wifi_rfkill)
				rfkill_force_state(wifi_rfkill,
						   hp_wmi_wifi_state());
			if (bluetooth_rfkill)
				rfkill_force_state(bluetooth_rfkill,
						   hp_wmi_bluetooth_state());
			if (wwan_rfkill)
				rfkill_force_state(wwan_rfkill,
						   hp_wmi_wwan_state());
		} else
			printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
			       eventcode);
	} else
		printk(KERN_INFO "HP WMI: Unknown response received\n");
}

static int __init hp_wmi_input_setup(void)
{
	struct key_entry *key;
	int err;

	hp_wmi_input_dev = input_allocate_device();

	hp_wmi_input_dev->name = "HP WMI hotkeys";
	hp_wmi_input_dev->phys = "wmi/input0";
	hp_wmi_input_dev->id.bustype = BUS_HOST;
	hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode;
	hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode;

	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
		switch (key->type) {
		case KE_KEY:
			set_bit(EV_KEY, hp_wmi_input_dev->evbit);
			set_bit(key->keycode, hp_wmi_input_dev->keybit);
			break;
		case KE_SW:
			set_bit(EV_SW, hp_wmi_input_dev->evbit);
			set_bit(key->keycode, hp_wmi_input_dev->swbit);

			/* Set initial dock state */
			input_report_switch(hp_wmi_input_dev, key->keycode,
					    hp_wmi_dock_state());
			input_sync(hp_wmi_input_dev);
			break;
		}
	}

	err = input_register_device(hp_wmi_input_dev);

	if (err) {
		input_free_device(hp_wmi_input_dev);
		return err;
	}

	return 0;
}

static void cleanup_sysfs(struct platform_device *device)
{
	device_remove_file(&device->dev, &dev_attr_display);
	device_remove_file(&device->dev, &dev_attr_hddtemp);
	device_remove_file(&device->dev, &dev_attr_als);
	device_remove_file(&device->dev, &dev_attr_dock);
}

static int __init hp_wmi_bios_setup(struct platform_device *device)
{
	int err;
	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);

	err = device_create_file(&device->dev, &dev_attr_display);
	if (err)
		goto add_sysfs_error;
	err = device_create_file(&device->dev, &dev_attr_hddtemp);
	if (err)
		goto add_sysfs_error;
	err = device_create_file(&device->dev, &dev_attr_als);
	if (err)
		goto add_sysfs_error;
	err = device_create_file(&device->dev, &dev_attr_dock);
	if (err)
		goto add_sysfs_error;

	if (wireless & 0x1) {
		wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN);
		wifi_rfkill->name = "hp-wifi";
		wifi_rfkill->state = hp_wmi_wifi_state();
		wifi_rfkill->toggle_radio = hp_wmi_wifi_set;
		err = rfkill_register(wifi_rfkill);
		if (err)
			goto add_sysfs_error;
	}

	if (wireless & 0x2) {
		bluetooth_rfkill = rfkill_allocate(&device->dev,
						   RFKILL_TYPE_BLUETOOTH);
		bluetooth_rfkill->name = "hp-bluetooth";
		bluetooth_rfkill->state = hp_wmi_bluetooth_state();
		bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set;
		err = rfkill_register(bluetooth_rfkill);
		if (err)
			goto register_bluetooth_error;
	}

	if (wireless & 0x4) {
		wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN);
		wwan_rfkill->name = "hp-wwan";
		wwan_rfkill->state = hp_wmi_wwan_state();
		wwan_rfkill->toggle_radio = hp_wmi_wwan_set;
		err = rfkill_register(wwan_rfkill);
		if (err)
			goto register_wwan_err;
	}

	return 0;
register_wwan_err:
	if (bluetooth_rfkill)
		rfkill_unregister(bluetooth_rfkill);
register_bluetooth_error:
	if (wifi_rfkill)
		rfkill_unregister(wifi_rfkill);
add_sysfs_error:
	cleanup_sysfs(device);
	return err;
}

static int __exit hp_wmi_bios_remove(struct platform_device *device)
{
	cleanup_sysfs(device);

	if (wifi_rfkill)
		rfkill_unregister(wifi_rfkill);
	if (bluetooth_rfkill)
		rfkill_unregister(bluetooth_rfkill);
	if (wwan_rfkill)
		rfkill_unregister(wwan_rfkill);

	return 0;
}

static int hp_wmi_resume_handler(struct platform_device *device)
{
	struct key_entry *key;

	/*
	 * Docking state may have changed while suspended, so trigger
	 * an input event for the current state. As this is a switch,
	 * the input layer will only actually pass it on if the state
	 * changed.
	 */
	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
		switch (key->type) {
		case KE_SW:
			input_report_switch(hp_wmi_input_dev, key->keycode,
					    hp_wmi_dock_state());
			input_sync(hp_wmi_input_dev);
			break;
		}
	}

	return 0;
}

static int __init hp_wmi_init(void)
{
	int err;

	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
		err = wmi_install_notify_handler(HPWMI_EVENT_GUID,
						 hp_wmi_notify, NULL);
		if (!err)
			hp_wmi_input_setup();
	}

	if (wmi_has_guid(HPWMI_BIOS_GUID)) {
		err = platform_driver_register(&hp_wmi_driver);
		if (err)
			return 0;
		hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
		if (!hp_wmi_platform_dev) {
			platform_driver_unregister(&hp_wmi_driver);
			return 0;
		}
		platform_device_add(hp_wmi_platform_dev);
	}

	return 0;
}

static void __exit hp_wmi_exit(void)
{
	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
		wmi_remove_notify_handler(HPWMI_EVENT_GUID);
		input_unregister_device(hp_wmi_input_dev);
	}
	if (hp_wmi_platform_dev) {
		platform_device_del(hp_wmi_platform_dev);
		platform_driver_unregister(&hp_wmi_driver);
	}
}

module_init(hp_wmi_init);
module_exit(hp_wmi_exit);
Commit	Line	Data
62ec30d4 MG	1	/*
	2	* HP WMI hotkeys
	3	*
	4	* Copyright (C) 2008 Red Hat <mjg@redhat.com>
	5	*
	6	* Portions based on wistron_btns.c:
	7	* Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
	8	* Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
	9	* Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	24	*/
	25
	26	#include <linux/kernel.h>
	27	#include <linux/module.h>
	28	#include <linux/init.h>
	29	#include <linux/types.h>
	30	#include <linux/input.h>
	31	#include <acpi/acpi_drivers.h>
	32	#include <linux/platform_device.h>
	33	#include <linux/acpi.h>
	34	#include <linux/rfkill.h>
	35	#include <linux/string.h>
	36
	37	MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
	38	MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
	39	MODULE_LICENSE("GPL");
	40
	41	MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
	42	MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
	43
	44	#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
	45	#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
	46
	47	#define HPWMI_DISPLAY_QUERY 0x1
	48	#define HPWMI_HDDTEMP_QUERY 0x2
	49	#define HPWMI_ALS_QUERY 0x3
	50	#define HPWMI_DOCK_QUERY 0x4
	51	#define HPWMI_WIRELESS_QUERY 0x5
a8823aef	52	#define HPWMI_HOTKEY_QUERY 0xc
62ec30d4 MG	53
	54	static int __init hp_wmi_bios_setup(struct platform_device *device);
	55	static int __exit hp_wmi_bios_remove(struct platform_device *device);
4c395bdd	56	static int hp_wmi_resume_handler(struct platform_device *device);
62ec30d4 MG	57
	58	struct bios_args {
	59	u32 signature;
	60	u32 command;
	61	u32 commandtype;
	62	u32 datasize;
	63	u32 data;
	64	};
	65
	66	struct bios_return {
	67	u32 sigpass;
	68	u32 return_code;
	69	u32 value;
	70	};
	71
	72	struct key_entry {
	73	char type; /* See KE_* below */
a8823aef	74	u16 code;
62ec30d4 MG	75	u16 keycode;
	76	};
	77
	78	enum { KE_KEY, KE_SW, KE_END };
	79
	80	static struct key_entry hp_wmi_keymap[] = {
	81	{KE_SW, 0x01, SW_DOCK},
	82	{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
	83	{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
a8823aef MG	84	{KE_KEY, 0x20e6, KEY_PROG1},
a8823aef MG	85	{KE_KEY, 0x2142, KEY_MEDIA},
5c624841	86	{KE_KEY, 0x213b, KEY_INFO},
a8823aef	87	{KE_KEY, 0x231b, KEY_HELP},
62ec30d4 MG	88	{KE_END, 0}
	89	};
	90
	91	static struct input_dev *hp_wmi_input_dev;
	92	static struct platform_device *hp_wmi_platform_dev;
	93
	94	static struct rfkill *wifi_rfkill;
	95	static struct rfkill *bluetooth_rfkill;
	96	static struct rfkill *wwan_rfkill;
	97
	98	static struct platform_driver hp_wmi_driver = {
	99	.driver = {
	100	.name = "hp-wmi",
	101	.owner = THIS_MODULE,
	102	},
	103	.probe = hp_wmi_bios_setup,
	104	.remove = hp_wmi_bios_remove,
4c395bdd	105	.resume = hp_wmi_resume_handler,
62ec30d4 MG	106	};
	107
	108	static int hp_wmi_perform_query(int query, int write, int value)
	109	{
	110	struct bios_return bios_return;
	111	acpi_status status;
	112	union acpi_object *obj;
	113	struct bios_args args = {
	114	.signature = 0x55434553,
	115	.command = write ? 0x2 : 0x1,
	116	.commandtype = query,
	117	.datasize = write ? 0x4 : 0,
	118	.data = value,
	119	};
	120	struct acpi_buffer input = { sizeof(struct bios_args), &args };
	121	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
	122
	123	status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
	124
	125	obj = output.pointer;
	126
	127	if (!obj \|\| obj->type != ACPI_TYPE_BUFFER)
	128	return -EINVAL;
	129
	130	bios_return = ((struct bios_return )obj->buffer.pointer);
	131	if (bios_return.return_code > 0)
	132	return bios_return.return_code * -1;
	133	else
	134	return bios_return.value;
	135	}
	136
	137	static int hp_wmi_display_state(void)
	138	{
	139	return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0);
	140	}
	141
	142	static int hp_wmi_hddtemp_state(void)
	143	{
	144	return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0);
	145	}
	146
	147	static int hp_wmi_als_state(void)
	148	{
	149	return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0);
	150	}
	151
	152	static int hp_wmi_dock_state(void)
	153	{
	154	return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
	155	}
	156
	157	static int hp_wmi_wifi_set(void *data, enum rfkill_state state)
	158	{
	159	if (state)
	160	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101);
	161	else
	162	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100);
	163	}
	164
	165	static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state)
	166	{
	167	if (state)
	168	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202);
	169	else
170	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200);
171	}
172
173	static int hp_wmi_wwan_set(void *data, enum rfkill_state state)
174	{
175	if (state)
176	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404);
177	else
178	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400);
179	}
180
181	static int hp_wmi_wifi_state(void)
182	{
183	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
184
185	if (wireless & 0x100)
3f6e2f13	186	return RFKILL_STATE_UNBLOCKED;
62ec30d4	187	else
3f6e2f13	188	return RFKILL_STATE_SOFT_BLOCKED;
62ec30d4 MG	189	}
	190
	191	static int hp_wmi_bluetooth_state(void)
	192	{
	193	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
	194
	195	if (wireless & 0x10000)
3f6e2f13	196	return RFKILL_STATE_UNBLOCKED;
62ec30d4	197	else
3f6e2f13	198	return RFKILL_STATE_SOFT_BLOCKED;
62ec30d4 MG	199	}
	200
	201	static int hp_wmi_wwan_state(void)
	202	{
	203	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
	204
	205	if (wireless & 0x1000000)
3f6e2f13	206	return RFKILL_STATE_UNBLOCKED;
62ec30d4	207	else
3f6e2f13	208	return RFKILL_STATE_SOFT_BLOCKED;
62ec30d4 MG	209	}
	210
	211	static ssize_t show_display(struct device dev, struct device_attribute attr,
	212	char *buf)
	213	{
	214	int value = hp_wmi_display_state();
	215	if (value < 0)
	216	return -EINVAL;
	217	return sprintf(buf, "%d\n", value);
	218	}
	219
	220	static ssize_t show_hddtemp(struct device dev, struct device_attribute attr,
	221	char *buf)
	222	{
	223	int value = hp_wmi_hddtemp_state();
	224	if (value < 0)
	225	return -EINVAL;
	226	return sprintf(buf, "%d\n", value);
	227	}
	228
	229	static ssize_t show_als(struct device dev, struct device_attribute attr,
	230	char *buf)
	231	{
	232	int value = hp_wmi_als_state();
	233	if (value < 0)
	234	return -EINVAL;
	235	return sprintf(buf, "%d\n", value);
	236	}
	237
	238	static ssize_t show_dock(struct device dev, struct device_attribute attr,
	239	char *buf)
	240	{
	241	int value = hp_wmi_dock_state();
	242	if (value < 0)
	243	return -EINVAL;
	244	return sprintf(buf, "%d\n", value);
	245	}
	246
	247	static ssize_t set_als(struct device dev, struct device_attribute attr,
	248	const char *buf, size_t count)
	249	{
	250	u32 tmp = simple_strtoul(buf, NULL, 10);
	251	hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
	252	return count;
	253	}
	254
	255	static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
	256	static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
	257	static DEVICE_ATTR(als, S_IRUGO \| S_IWUSR, show_als, set_als);
	258	static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
	259
	260	static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
	261	{
	262	struct key_entry *key;
	263
	264	for (key = hp_wmi_keymap; key->type != KE_END; key++)
	265	if (code == key->code)
	266	return key;
	267
	268	return NULL;
	269	}
	270
	271	static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode)
	272	{
273	struct key_entry *key;
274
275	for (key = hp_wmi_keymap; key->type != KE_END; key++)
276	if (key->type == KE_KEY && keycode == key->keycode)
277	return key;
278
279	return NULL;
280	}
281
282	static int hp_wmi_getkeycode(struct input_dev dev, int scancode, int keycode)
283	{
284	struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);
285
286	if (key && key->type == KE_KEY) {
287	*keycode = key->keycode;
288	return 0;
289	}
290
291	return -EINVAL;
292	}
293
294	static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
295	{
296	struct key_entry *key;
297	int old_keycode;
298
299	if (keycode < 0 \|\| keycode > KEY_MAX)
300	return -EINVAL;
301
302	key = hp_wmi_get_entry_by_scancode(scancode);
303	if (key && key->type == KE_KEY) {
304	old_keycode = key->keycode;
305	key->keycode = keycode;
306	set_bit(keycode, dev->keybit);
307	if (!hp_wmi_get_entry_by_keycode(old_keycode))
308	clear_bit(old_keycode, dev->keybit);
309	return 0;
310	}
311
312	return -EINVAL;
313	}
314
88429a10	315	static void hp_wmi_notify(u32 value, void *context)
62ec30d4 MG	316	{
	317	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
	318	static struct key_entry *key;
	319	union acpi_object *obj;
	320
	321	wmi_get_event_data(value, &response);
	322
	323	obj = (union acpi_object *)response.pointer;
	324
	325	if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) {
	326	int eventcode = ((u8 ) obj->buffer.pointer);
a8823aef MG	327	if (eventcode == 0x4)
	328	eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
	329	0);
62ec30d4 MG	330	key = hp_wmi_get_entry_by_scancode(eventcode);
	331	if (key) {
	332	switch (key->type) {
	333	case KE_KEY:
	334	input_report_key(hp_wmi_input_dev,
	335	key->keycode, 1);
	336	input_sync(hp_wmi_input_dev);
	337	input_report_key(hp_wmi_input_dev,
	338	key->keycode, 0);
	339	input_sync(hp_wmi_input_dev);
	340	break;
	341	case KE_SW:
	342	input_report_switch(hp_wmi_input_dev,
	343	key->keycode,
	344	hp_wmi_dock_state());
	345	input_sync(hp_wmi_input_dev);
	346	break;
	347	}
	348	} else if (eventcode == 0x5) {
	349	if (wifi_rfkill)
3f6e2f13 MG	350	rfkill_force_state(wifi_rfkill,
3f6e2f13 MG	351	hp_wmi_wifi_state());
62ec30d4	352	if (bluetooth_rfkill)
3f6e2f13 MG	353	rfkill_force_state(bluetooth_rfkill,
3f6e2f13 MG	354	hp_wmi_bluetooth_state());
62ec30d4	355	if (wwan_rfkill)
3f6e2f13 MG	356	rfkill_force_state(wwan_rfkill,
3f6e2f13 MG	357	hp_wmi_wwan_state());
62ec30d4 MG	358	} else
	359	printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
	360	eventcode);
	361	} else
	362	printk(KERN_INFO "HP WMI: Unknown response received\n");
	363	}
	364
	365	static int __init hp_wmi_input_setup(void)
	366	{
	367	struct key_entry *key;
	368	int err;
	369
	370	hp_wmi_input_dev = input_allocate_device();
	371
	372	hp_wmi_input_dev->name = "HP WMI hotkeys";
	373	hp_wmi_input_dev->phys = "wmi/input0";
	374	hp_wmi_input_dev->id.bustype = BUS_HOST;
	375	hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode;
	376	hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode;
	377
	378	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
	379	switch (key->type) {
	380	case KE_KEY:
	381	set_bit(EV_KEY, hp_wmi_input_dev->evbit);
	382	set_bit(key->keycode, hp_wmi_input_dev->keybit);
	383	break;
	384	case KE_SW:
	385	set_bit(EV_SW, hp_wmi_input_dev->evbit);
	386	set_bit(key->keycode, hp_wmi_input_dev->swbit);
3095eb87 FP	387
	388	/* Set initial dock state */
	389	input_report_switch(hp_wmi_input_dev, key->keycode,
	390	hp_wmi_dock_state());
	391	input_sync(hp_wmi_input_dev);
62ec30d4 MG	392	break;
	393	}
	394	}
	395
	396	err = input_register_device(hp_wmi_input_dev);
	397
	398	if (err) {
	399	input_free_device(hp_wmi_input_dev);
	400	return err;
	401	}
	402
	403	return 0;
	404	}
	405
	406	static void cleanup_sysfs(struct platform_device *device)
	407	{
	408	device_remove_file(&device->dev, &dev_attr_display);
	409	device_remove_file(&device->dev, &dev_attr_hddtemp);
	410	device_remove_file(&device->dev, &dev_attr_als);
	411	device_remove_file(&device->dev, &dev_attr_dock);
	412	}
	413
	414	static int __init hp_wmi_bios_setup(struct platform_device *device)
	415	{
	416	int err;
3f6e2f13	417	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
62ec30d4 MG	418
	419	err = device_create_file(&device->dev, &dev_attr_display);
	420	if (err)
	421	goto add_sysfs_error;
	422	err = device_create_file(&device->dev, &dev_attr_hddtemp);
	423	if (err)
	424	goto add_sysfs_error;
	425	err = device_create_file(&device->dev, &dev_attr_als);
	426	if (err)
	427	goto add_sysfs_error;
	428	err = device_create_file(&device->dev, &dev_attr_dock);
	429	if (err)
	430	goto add_sysfs_error;
	431
3f6e2f13 MG	432	if (wireless & 0x1) {
	433	wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN);
	434	wifi_rfkill->name = "hp-wifi";
	435	wifi_rfkill->state = hp_wmi_wifi_state();
	436	wifi_rfkill->toggle_radio = hp_wmi_wifi_set;
fe8e4e03 LF	437	err = rfkill_register(wifi_rfkill);
	438	if (err)
	439	goto add_sysfs_error;
3f6e2f13 MG	440	}
	441
	442	if (wireless & 0x2) {
	443	bluetooth_rfkill = rfkill_allocate(&device->dev,
	444	RFKILL_TYPE_BLUETOOTH);
	445	bluetooth_rfkill->name = "hp-bluetooth";
	446	bluetooth_rfkill->state = hp_wmi_bluetooth_state();
	447	bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set;
fe8e4e03	448	err = rfkill_register(bluetooth_rfkill);
6989d565	449	if (err)
fe8e4e03	450	goto register_bluetooth_error;
3f6e2f13 MG	451	}
	452
	453	if (wireless & 0x4) {
	454	wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN);
	455	wwan_rfkill->name = "hp-wwan";
	456	wwan_rfkill->state = hp_wmi_wwan_state();
	457	wwan_rfkill->toggle_radio = hp_wmi_wwan_set;
fe8e4e03 LF	458	err = rfkill_register(wwan_rfkill);
	459	if (err)
	460	goto register_wwan_err;
3f6e2f13	461	}
62ec30d4 MG	462
62ec30d4 MG	463	return 0;
fe8e4e03	464	register_wwan_err:
44f0606d AM	465	if (bluetooth_rfkill)
44f0606d AM	466	rfkill_unregister(bluetooth_rfkill);
fe8e4e03	467	register_bluetooth_error:
44f0606d AM	468	if (wifi_rfkill)
44f0606d AM	469	rfkill_unregister(wifi_rfkill);
62ec30d4 MG	470	add_sysfs_error:
	471	cleanup_sysfs(device);
	472	return err;
	473	}
	474
	475	static int __exit hp_wmi_bios_remove(struct platform_device *device)
	476	{
	477	cleanup_sysfs(device);
	478
3f6e2f13 MG	479	if (wifi_rfkill)
	480	rfkill_unregister(wifi_rfkill);
	481	if (bluetooth_rfkill)
	482	rfkill_unregister(bluetooth_rfkill);
	483	if (wwan_rfkill)
	484	rfkill_unregister(wwan_rfkill);
62ec30d4 MG	485
	486	return 0;
	487	}
	488
4c395bdd FP	489	static int hp_wmi_resume_handler(struct platform_device *device)
	490	{
	491	struct key_entry *key;
	492
	493	/*
	494	* Docking state may have changed while suspended, so trigger
	495	* an input event for the current state. As this is a switch,
	496	* the input layer will only actually pass it on if the state
	497	* changed.
	498	*/
	499	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
	500	switch (key->type) {
	501	case KE_SW:
	502	input_report_switch(hp_wmi_input_dev, key->keycode,
	503	hp_wmi_dock_state());
	504	input_sync(hp_wmi_input_dev);
	505	break;
	506	}
	507	}
	508
	509	return 0;
	510	}
	511
62ec30d4 MG	512	static int __init hp_wmi_init(void)
	513	{
	514	int err;
	515
	516	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
	517	err = wmi_install_notify_handler(HPWMI_EVENT_GUID,
	518	hp_wmi_notify, NULL);
	519	if (!err)
	520	hp_wmi_input_setup();
	521	}
	522
	523	if (wmi_has_guid(HPWMI_BIOS_GUID)) {
	524	err = platform_driver_register(&hp_wmi_driver);
	525	if (err)
	526	return 0;
	527	hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
	528	if (!hp_wmi_platform_dev) {
	529	platform_driver_unregister(&hp_wmi_driver);
	530	return 0;
	531	}
	532	platform_device_add(hp_wmi_platform_dev);
	533	}
	534
	535	return 0;
	536	}
	537
	538	static void __exit hp_wmi_exit(void)
	539	{
	540	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
	541	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
	542	input_unregister_device(hp_wmi_input_dev);
	543	}
	544	if (hp_wmi_platform_dev) {
	545	platform_device_del(hp_wmi_platform_dev);
	546	platform_driver_unregister(&hp_wmi_driver);
	547	}
	548	}
	549
	550	module_init(hp_wmi_init);
	551	module_exit(hp_wmi_exit);