[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_set_block(void *data, bool blocked)
{
	unsigned long b = (unsigned long) data;
	int query = BIT(b + 8) | ((!!blocked) << b);

	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query);
}

static const struct rfkill_ops hp_wmi_rfkill_ops = {
	.set_block = hp_wmi_set_block,
};

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

	if (wireless & 0x100)
		return false;
	else
		return true;
}

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

	if (wireless & 0x10000)
		return false;
	else
		return true;
}

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

	if (wireless & 0x1000000)
		return false;
	else
		return true;
}

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_set_sw_state(wifi_rfkill,
						    hp_wmi_wifi_state());
			if (bluetooth_rfkill)
				rfkill_set_sw_state(bluetooth_rfkill,
						    hp_wmi_bluetooth_state());
			if (wwan_rfkill)
				rfkill_set_sw_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_alloc("hp-wifi", &device->dev,
					   RFKILL_TYPE_WLAN,
					   &hp_wmi_rfkill_ops,
					   (void *) 0);
		rfkill_set_sw_state(wifi_rfkill, hp_wmi_wifi_state());
		err = rfkill_register(wifi_rfkill);
		if (err)
			goto register_wifi_error;
	}

	if (wireless & 0x2) {
		bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
						RFKILL_TYPE_BLUETOOTH,
						&hp_wmi_rfkill_ops,
						(void *) 1);
		rfkill_set_sw_state(bluetooth_rfkill,
				    hp_wmi_bluetooth_state());
		err = rfkill_register(bluetooth_rfkill);
		if (err)
			goto register_bluetooth_error;
	}

	if (wireless & 0x4) {
		wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
					   RFKILL_TYPE_WWAN,
					   &hp_wmi_rfkill_ops,
					   (void *) 2);
		rfkill_set_sw_state(wwan_rfkill, hp_wmi_wwan_state());
		err = rfkill_register(wwan_rfkill);
		if (err)
			goto register_wwan_err;
	}

	return 0;
register_wwan_err:
	rfkill_destroy(wwan_rfkill);
	if (bluetooth_rfkill)
		rfkill_unregister(bluetooth_rfkill);
register_bluetooth_error:
	rfkill_destroy(bluetooth_rfkill);
	if (wifi_rfkill)
		rfkill_unregister(wifi_rfkill);
register_wifi_error:
	rfkill_destroy(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);
		rfkill_destroy(wifi_rfkill);
	}
	if (bluetooth_rfkill) {
		rfkill_unregister(bluetooth_rfkill);
		rfkill_destroy(wifi_rfkill);
	}
	if (wwan_rfkill) {
		rfkill_unregister(wwan_rfkill);
		rfkill_destroy(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
19d337df	157	static int hp_wmi_set_block(void *data, bool blocked)
62ec30d4	158	{
19d337df JB	159	unsigned long b = (unsigned long) data;
19d337df JB	160	int query = BIT(b + 8) \| ((!!blocked) << b);
62ec30d4	161
19d337df	162	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query);
62ec30d4 MG	163	}
62ec30d4 MG	164
19d337df JB	165	static const struct rfkill_ops hp_wmi_rfkill_ops = {
	166	.set_block = hp_wmi_set_block,
	167	};
62ec30d4	168
19d337df	169	static bool hp_wmi_wifi_state(void)
62ec30d4 MG	170	{
	171	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
	172
	173	if (wireless & 0x100)
19d337df	174	return false;
62ec30d4	175	else
19d337df	176	return true;
62ec30d4 MG	177	}
62ec30d4 MG	178
19d337df	179	static bool hp_wmi_bluetooth_state(void)
62ec30d4 MG	180	{
	181	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
	182
	183	if (wireless & 0x10000)
19d337df	184	return false;
62ec30d4	185	else
19d337df	186	return true;
62ec30d4 MG	187	}
62ec30d4 MG	188
19d337df	189	static bool hp_wmi_wwan_state(void)
62ec30d4 MG	190	{
	191	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
	192
	193	if (wireless & 0x1000000)
19d337df	194	return false;
62ec30d4	195	else
19d337df	196	return true;
62ec30d4 MG	197	}
	198
	199	static ssize_t show_display(struct device dev, struct device_attribute attr,
	200	char *buf)
	201	{
	202	int value = hp_wmi_display_state();
	203	if (value < 0)
	204	return -EINVAL;
	205	return sprintf(buf, "%d\n", value);
	206	}
	207
	208	static ssize_t show_hddtemp(struct device dev, struct device_attribute attr,
	209	char *buf)
	210	{
	211	int value = hp_wmi_hddtemp_state();
	212	if (value < 0)
	213	return -EINVAL;
	214	return sprintf(buf, "%d\n", value);
	215	}
	216
	217	static ssize_t show_als(struct device dev, struct device_attribute attr,
	218	char *buf)
	219	{
	220	int value = hp_wmi_als_state();
	221	if (value < 0)
	222	return -EINVAL;
	223	return sprintf(buf, "%d\n", value);
	224	}
	225
	226	static ssize_t show_dock(struct device dev, struct device_attribute attr,
	227	char *buf)
	228	{
	229	int value = hp_wmi_dock_state();
	230	if (value < 0)
	231	return -EINVAL;
	232	return sprintf(buf, "%d\n", value);
	233	}
	234
	235	static ssize_t set_als(struct device dev, struct device_attribute attr,
	236	const char *buf, size_t count)
	237	{
	238	u32 tmp = simple_strtoul(buf, NULL, 10);
	239	hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
	240	return count;
	241	}
	242
	243	static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
	244	static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
	245	static DEVICE_ATTR(als, S_IRUGO \| S_IWUSR, show_als, set_als);
	246	static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
	247
	248	static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
	249	{
	250	struct key_entry *key;
	251
	252	for (key = hp_wmi_keymap; key->type != KE_END; key++)
	253	if (code == key->code)
	254	return key;
	255
	256	return NULL;
	257	}
	258
	259	static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode)
	260	{
261	struct key_entry *key;
262
263	for (key = hp_wmi_keymap; key->type != KE_END; key++)
264	if (key->type == KE_KEY && keycode == key->keycode)
265	return key;
266
267	return NULL;
268	}
269
270	static int hp_wmi_getkeycode(struct input_dev dev, int scancode, int keycode)
271	{
272	struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);
273
274	if (key && key->type == KE_KEY) {
275	*keycode = key->keycode;
276	return 0;
277	}
278
279	return -EINVAL;
280	}
281
282	static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
283	{
284	struct key_entry *key;
285	int old_keycode;
286
287	if (keycode < 0 \|\| keycode > KEY_MAX)
288	return -EINVAL;
289
290	key = hp_wmi_get_entry_by_scancode(scancode);
291	if (key && key->type == KE_KEY) {
292	old_keycode = key->keycode;
293	key->keycode = keycode;
294	set_bit(keycode, dev->keybit);
295	if (!hp_wmi_get_entry_by_keycode(old_keycode))
296	clear_bit(old_keycode, dev->keybit);
297	return 0;
298	}
299
300	return -EINVAL;
301	}
302
88429a10	303	static void hp_wmi_notify(u32 value, void *context)
62ec30d4 MG	304	{
	305	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
	306	static struct key_entry *key;
	307	union acpi_object *obj;
	308
	309	wmi_get_event_data(value, &response);
	310
	311	obj = (union acpi_object *)response.pointer;
	312
	313	if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) {
	314	int eventcode = ((u8 ) obj->buffer.pointer);
a8823aef MG	315	if (eventcode == 0x4)
	316	eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
	317	0);
62ec30d4 MG	318	key = hp_wmi_get_entry_by_scancode(eventcode);
	319	if (key) {
	320	switch (key->type) {
	321	case KE_KEY:
	322	input_report_key(hp_wmi_input_dev,
	323	key->keycode, 1);
	324	input_sync(hp_wmi_input_dev);
	325	input_report_key(hp_wmi_input_dev,
	326	key->keycode, 0);
	327	input_sync(hp_wmi_input_dev);
	328	break;
	329	case KE_SW:
	330	input_report_switch(hp_wmi_input_dev,
	331	key->keycode,
	332	hp_wmi_dock_state());
	333	input_sync(hp_wmi_input_dev);
	334	break;
	335	}
	336	} else if (eventcode == 0x5) {
	337	if (wifi_rfkill)
19d337df JB	338	rfkill_set_sw_state(wifi_rfkill,
19d337df JB	339	hp_wmi_wifi_state());
62ec30d4	340	if (bluetooth_rfkill)
19d337df JB	341	rfkill_set_sw_state(bluetooth_rfkill,
19d337df JB	342	hp_wmi_bluetooth_state());
62ec30d4	343	if (wwan_rfkill)
19d337df JB	344	rfkill_set_sw_state(wwan_rfkill,
19d337df JB	345	hp_wmi_wwan_state());
62ec30d4 MG	346	} else
	347	printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
	348	eventcode);
	349	} else
	350	printk(KERN_INFO "HP WMI: Unknown response received\n");
	351	}
	352
	353	static int __init hp_wmi_input_setup(void)
	354	{
	355	struct key_entry *key;
	356	int err;
	357
	358	hp_wmi_input_dev = input_allocate_device();
	359
	360	hp_wmi_input_dev->name = "HP WMI hotkeys";
	361	hp_wmi_input_dev->phys = "wmi/input0";
	362	hp_wmi_input_dev->id.bustype = BUS_HOST;
	363	hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode;
	364	hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode;
	365
	366	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
	367	switch (key->type) {
	368	case KE_KEY:
	369	set_bit(EV_KEY, hp_wmi_input_dev->evbit);
	370	set_bit(key->keycode, hp_wmi_input_dev->keybit);
	371	break;
	372	case KE_SW:
	373	set_bit(EV_SW, hp_wmi_input_dev->evbit);
	374	set_bit(key->keycode, hp_wmi_input_dev->swbit);
3095eb87 FP	375
	376	/* Set initial dock state */
	377	input_report_switch(hp_wmi_input_dev, key->keycode,
	378	hp_wmi_dock_state());
	379	input_sync(hp_wmi_input_dev);
62ec30d4 MG	380	break;
	381	}
	382	}
	383
	384	err = input_register_device(hp_wmi_input_dev);
	385
	386	if (err) {
	387	input_free_device(hp_wmi_input_dev);
	388	return err;
	389	}
	390
	391	return 0;
	392	}
	393
	394	static void cleanup_sysfs(struct platform_device *device)
	395	{
	396	device_remove_file(&device->dev, &dev_attr_display);
	397	device_remove_file(&device->dev, &dev_attr_hddtemp);
	398	device_remove_file(&device->dev, &dev_attr_als);
	399	device_remove_file(&device->dev, &dev_attr_dock);
	400	}
	401
	402	static int __init hp_wmi_bios_setup(struct platform_device *device)
	403	{
	404	int err;
3f6e2f13	405	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
62ec30d4 MG	406
	407	err = device_create_file(&device->dev, &dev_attr_display);
	408	if (err)
	409	goto add_sysfs_error;
	410	err = device_create_file(&device->dev, &dev_attr_hddtemp);
	411	if (err)
	412	goto add_sysfs_error;
	413	err = device_create_file(&device->dev, &dev_attr_als);
	414	if (err)
	415	goto add_sysfs_error;
	416	err = device_create_file(&device->dev, &dev_attr_dock);
	417	if (err)
	418	goto add_sysfs_error;
	419
3f6e2f13	420	if (wireless & 0x1) {
19d337df JB	421	wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
	422	RFKILL_TYPE_WLAN,
	423	&hp_wmi_rfkill_ops,
	424	(void *) 0);
	425	rfkill_set_sw_state(wifi_rfkill, hp_wmi_wifi_state());
fe8e4e03 LF	426	err = rfkill_register(wifi_rfkill);
fe8e4e03 LF	427	if (err)
19d337df	428	goto register_wifi_error;
3f6e2f13 MG	429	}
	430
	431	if (wireless & 0x2) {
19d337df JB	432	bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
	433	RFKILL_TYPE_BLUETOOTH,
	434	&hp_wmi_rfkill_ops,
	435	(void *) 1);
	436	rfkill_set_sw_state(bluetooth_rfkill,
	437	hp_wmi_bluetooth_state());
fe8e4e03	438	err = rfkill_register(bluetooth_rfkill);
6989d565	439	if (err)
fe8e4e03	440	goto register_bluetooth_error;
3f6e2f13 MG	441	}
	442
	443	if (wireless & 0x4) {
19d337df JB	444	wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
	445	RFKILL_TYPE_WWAN,
	446	&hp_wmi_rfkill_ops,
	447	(void *) 2);
	448	rfkill_set_sw_state(wwan_rfkill, hp_wmi_wwan_state());
fe8e4e03 LF	449	err = rfkill_register(wwan_rfkill);
	450	if (err)
	451	goto register_wwan_err;
3f6e2f13	452	}
62ec30d4 MG	453
62ec30d4 MG	454	return 0;
fe8e4e03	455	register_wwan_err:
19d337df	456	rfkill_destroy(wwan_rfkill);
44f0606d AM	457	if (bluetooth_rfkill)
44f0606d AM	458	rfkill_unregister(bluetooth_rfkill);
fe8e4e03	459	register_bluetooth_error:
19d337df	460	rfkill_destroy(bluetooth_rfkill);
44f0606d AM	461	if (wifi_rfkill)
44f0606d AM	462	rfkill_unregister(wifi_rfkill);
19d337df JB	463	register_wifi_error:
19d337df JB	464	rfkill_destroy(wifi_rfkill);
62ec30d4 MG	465	add_sysfs_error:
	466	cleanup_sysfs(device);
	467	return err;
	468	}
	469
	470	static int __exit hp_wmi_bios_remove(struct platform_device *device)
	471	{
	472	cleanup_sysfs(device);
	473
19d337df	474	if (wifi_rfkill) {
3f6e2f13	475	rfkill_unregister(wifi_rfkill);
19d337df JB	476	rfkill_destroy(wifi_rfkill);
	477	}
	478	if (bluetooth_rfkill) {
3f6e2f13	479	rfkill_unregister(bluetooth_rfkill);
19d337df JB	480	rfkill_destroy(wifi_rfkill);
	481	}
	482	if (wwan_rfkill) {
3f6e2f13	483	rfkill_unregister(wwan_rfkill);
19d337df JB	484	rfkill_destroy(wwan_rfkill);
19d337df JB	485	}
62ec30d4 MG	486
	487	return 0;
	488	}
	489
4c395bdd FP	490	static int hp_wmi_resume_handler(struct platform_device *device)
	491	{
	492	struct key_entry *key;
	493
	494	/*
	495	* Docking state may have changed while suspended, so trigger
	496	* an input event for the current state. As this is a switch,
	497	* the input layer will only actually pass it on if the state
	498	* changed.
	499	*/
	500	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
	501	switch (key->type) {
	502	case KE_SW:
	503	input_report_switch(hp_wmi_input_dev, key->keycode,
	504	hp_wmi_dock_state());
	505	input_sync(hp_wmi_input_dev);
	506	break;
	507	}
	508	}
	509
	510	return 0;
	511	}
	512
62ec30d4 MG	513	static int __init hp_wmi_init(void)
	514	{
	515	int err;
	516
	517	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
	518	err = wmi_install_notify_handler(HPWMI_EVENT_GUID,
	519	hp_wmi_notify, NULL);
	520	if (!err)
	521	hp_wmi_input_setup();
	522	}
	523
	524	if (wmi_has_guid(HPWMI_BIOS_GUID)) {
	525	err = platform_driver_register(&hp_wmi_driver);
	526	if (err)
	527	return 0;
	528	hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
	529	if (!hp_wmi_platform_dev) {
	530	platform_driver_unregister(&hp_wmi_driver);
	531	return 0;
	532	}
	533	platform_device_add(hp_wmi_platform_dev);
	534	}
	535
	536	return 0;
	537	}
	538
	539	static void __exit hp_wmi_exit(void)
	540	{
	541	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
	542	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
	543	input_unregister_device(hp_wmi_input_dev);
	544	}
	545	if (hp_wmi_platform_dev) {
	546	platform_device_del(hp_wmi_platform_dev);
	547	platform_driver_unregister(&hp_wmi_driver);
	548	}
	549	}
	550
	551	module_init(hp_wmi_init);
	552	module_exit(hp_wmi_exit);