[deliverable/linux.git] / drivers / misc / 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

static int __init hp_wmi_bios_setup(struct platform_device *device);
static int __exit hp_wmi_bios_remove(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 */
	u8 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, 0x04, 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,
};

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 1;
	else
		return 0;
}

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

	if (wireless & 0x10000)
		return 1;
	else
		return 0;
}

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

	if (wireless & 0x1000000)
		return 1;
	else
		return 0;
}

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;
}

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);
		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)
				wifi_rfkill->state = hp_wmi_wifi_state();
			if (bluetooth_rfkill)
				bluetooth_rfkill->state =
				    hp_wmi_bluetooth_state();
			if (wwan_rfkill)
				wwan_rfkill->state = 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);
			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;

	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;

	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;
	wifi_rfkill->user_claim_unsupported = 1;

	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;
	bluetooth_rfkill->user_claim_unsupported = 1;

	wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WIMAX);
	wwan_rfkill->name = "hp-wwan";
	wwan_rfkill->state = hp_wmi_wwan_state();
	wwan_rfkill->toggle_radio = hp_wmi_wwan_set;
	wwan_rfkill->user_claim_unsupported = 1;

	rfkill_register(wifi_rfkill);
	rfkill_register(bluetooth_rfkill);
	rfkill_register(wwan_rfkill);

	return 0;
add_sysfs_error:
	cleanup_sysfs(device);
	return err;
}

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

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

	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
	52
	53	static int __init hp_wmi_bios_setup(struct platform_device *device);
	54	static int __exit hp_wmi_bios_remove(struct platform_device *device);
	55
	56	struct bios_args {
	57	u32 signature;
	58	u32 command;
	59	u32 commandtype;
	60	u32 datasize;
	61	u32 data;
	62	};
	63
	64	struct bios_return {
65	u32 sigpass;
66	u32 return_code;
67	u32 value;
68	};
69
70	struct key_entry {
71	char type; /* See KE_* below */
72	u8 code;
73	u16 keycode;
74	};
75
76	enum { KE_KEY, KE_SW, KE_END };
77
78	static struct key_entry hp_wmi_keymap[] = {
79	{KE_SW, 0x01, SW_DOCK},
80	{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
81	{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
82	{KE_KEY, 0x04, KEY_HELP},
83	{KE_END, 0}
84	};
85
86	static struct input_dev *hp_wmi_input_dev;
87	static struct platform_device *hp_wmi_platform_dev;
88
89	static struct rfkill *wifi_rfkill;
90	static struct rfkill *bluetooth_rfkill;
91	static struct rfkill *wwan_rfkill;
92
93	static struct platform_driver hp_wmi_driver = {
94	.driver = {
95	.name = "hp-wmi",
96	.owner = THIS_MODULE,
97	},
98	.probe = hp_wmi_bios_setup,
99	.remove = hp_wmi_bios_remove,
100	};
101
102	static int hp_wmi_perform_query(int query, int write, int value)
103	{
104	struct bios_return bios_return;
105	acpi_status status;
106	union acpi_object *obj;
107	struct bios_args args = {
108	.signature = 0x55434553,
109	.command = write ? 0x2 : 0x1,
110	.commandtype = query,
111	.datasize = write ? 0x4 : 0,
112	.data = value,
113	};
114	struct acpi_buffer input = { sizeof(struct bios_args), &args };
115	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
116
117	status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
118
119	obj = output.pointer;
120
121	if (!obj \|\| obj->type != ACPI_TYPE_BUFFER)
122	return -EINVAL;
123
124	bios_return = ((struct bios_return )obj->buffer.pointer);
125	if (bios_return.return_code > 0)
126	return bios_return.return_code * -1;
127	else
128	return bios_return.value;
129	}
130
131	static int hp_wmi_display_state(void)
132	{
133	return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0);
134	}
135
136	static int hp_wmi_hddtemp_state(void)
137	{
138	return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0);
139	}
140
141	static int hp_wmi_als_state(void)
142	{
143	return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0);
144	}
145
146	static int hp_wmi_dock_state(void)
147	{
148	return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
149	}
150
151	static int hp_wmi_wifi_set(void *data, enum rfkill_state state)
152	{
153	if (state)
154	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101);
155	else
156	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100);
157	}
158
159	static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state)
160	{
161	if (state)
162	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202);
163	else
164	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200);
165	}
166
167	static int hp_wmi_wwan_set(void *data, enum rfkill_state state)
168	{
169	if (state)
170	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404);
171	else
172	return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400);
173	}
174
175	static int hp_wmi_wifi_state(void)
176	{
177	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
178
179	if (wireless & 0x100)
180	return 1;
181	else
182	return 0;
183	}
184
185	static int hp_wmi_bluetooth_state(void)
186	{
187	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
188
189	if (wireless & 0x10000)
190	return 1;
191	else
192	return 0;
193	}
194
195	static int hp_wmi_wwan_state(void)
196	{
197	int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
198
199	if (wireless & 0x1000000)
200	return 1;
201	else
202	return 0;
203	}
204
205	static ssize_t show_display(struct device dev, struct device_attribute attr,
206	char *buf)
207	{
208	int value = hp_wmi_display_state();
209	if (value < 0)
210	return -EINVAL;
211	return sprintf(buf, "%d\n", value);
212	}
213
214	static ssize_t show_hddtemp(struct device dev, struct device_attribute attr,
215	char *buf)
216	{
217	int value = hp_wmi_hddtemp_state();
218	if (value < 0)
219	return -EINVAL;
220	return sprintf(buf, "%d\n", value);
221	}
222
223	static ssize_t show_als(struct device dev, struct device_attribute attr,
224	char *buf)
225	{
226	int value = hp_wmi_als_state();
227	if (value < 0)
228	return -EINVAL;
229	return sprintf(buf, "%d\n", value);
230	}
231
232	static ssize_t show_dock(struct device dev, struct device_attribute attr,
233	char *buf)
234	{
235	int value = hp_wmi_dock_state();
236	if (value < 0)
237	return -EINVAL;
238	return sprintf(buf, "%d\n", value);
239	}
240
241	static ssize_t set_als(struct device dev, struct device_attribute attr,
242	const char *buf, size_t count)
243	{
244	u32 tmp = simple_strtoul(buf, NULL, 10);
245	hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
246	return count;
247	}
248
249	static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
250	static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
251	static DEVICE_ATTR(als, S_IRUGO \| S_IWUSR, show_als, set_als);
252	static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
253
254	static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
255	{
256	struct key_entry *key;
257
258	for (key = hp_wmi_keymap; key->type != KE_END; key++)
259	if (code == key->code)
260	return key;
261
262	return NULL;
263	}
264
265	static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode)
266	{
267	struct key_entry *key;
268
269	for (key = hp_wmi_keymap; key->type != KE_END; key++)
270	if (key->type == KE_KEY && keycode == key->keycode)
271	return key;
272
273	return NULL;
274	}
275
276	static int hp_wmi_getkeycode(struct input_dev dev, int scancode, int keycode)
277	{
278	struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);
279
280	if (key && key->type == KE_KEY) {
281	*keycode = key->keycode;
282	return 0;
283	}
284
285	return -EINVAL;
286	}
287
288	static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
289	{
290	struct key_entry *key;
291	int old_keycode;
292
293	if (keycode < 0 \|\| keycode > KEY_MAX)
294	return -EINVAL;
295
296	key = hp_wmi_get_entry_by_scancode(scancode);
297	if (key && key->type == KE_KEY) {
298	old_keycode = key->keycode;
299	key->keycode = keycode;
300	set_bit(keycode, dev->keybit);
301	if (!hp_wmi_get_entry_by_keycode(old_keycode))
302	clear_bit(old_keycode, dev->keybit);
303	return 0;
304	}
305
306	return -EINVAL;
307	}
308
309	void hp_wmi_notify(u32 value, void *context)
310	{
311	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
312	static struct key_entry *key;
313	union acpi_object *obj;
314
315	wmi_get_event_data(value, &response);
316
317	obj = (union acpi_object *)response.pointer;
318
319	if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) {
320	int eventcode = ((u8 ) obj->buffer.pointer);
321	key = hp_wmi_get_entry_by_scancode(eventcode);
322	if (key) {
323	switch (key->type) {
324	case KE_KEY:
325	input_report_key(hp_wmi_input_dev,
326	key->keycode, 1);
327	input_sync(hp_wmi_input_dev);
328	input_report_key(hp_wmi_input_dev,
329	key->keycode, 0);
330	input_sync(hp_wmi_input_dev);
331	break;
332	case KE_SW:
333	input_report_switch(hp_wmi_input_dev,
334	key->keycode,
335	hp_wmi_dock_state());
336	input_sync(hp_wmi_input_dev);
337	break;
338	}
339	} else if (eventcode == 0x5) {
340	if (wifi_rfkill)
341	wifi_rfkill->state = hp_wmi_wifi_state();
342	if (bluetooth_rfkill)
343	bluetooth_rfkill->state =
344	hp_wmi_bluetooth_state();
345	if (wwan_rfkill)
346	wwan_rfkill->state = hp_wmi_wwan_state();
347	} else
348	printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
349	eventcode);
350	} else
351	printk(KERN_INFO "HP WMI: Unknown response received\n");
352	}
353
354	static int __init hp_wmi_input_setup(void)
355	{
356	struct key_entry *key;
357	int err;
358
359	hp_wmi_input_dev = input_allocate_device();
360
361	hp_wmi_input_dev->name = "HP WMI hotkeys";
362	hp_wmi_input_dev->phys = "wmi/input0";
363	hp_wmi_input_dev->id.bustype = BUS_HOST;
364	hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode;
365	hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode;
366
367	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
368	switch (key->type) {
369	case KE_KEY:
370	set_bit(EV_KEY, hp_wmi_input_dev->evbit);
371	set_bit(key->keycode, hp_wmi_input_dev->keybit);
372	break;
373	case KE_SW:
374	set_bit(EV_SW, hp_wmi_input_dev->evbit);
375	set_bit(key->keycode, hp_wmi_input_dev->swbit);
376	break;
377	}
378	}
379
380	err = input_register_device(hp_wmi_input_dev);
381
382	if (err) {
383	input_free_device(hp_wmi_input_dev);
384	return err;
385	}
386
387	return 0;
388	}
389
390	static void cleanup_sysfs(struct platform_device *device)
391	{
392	device_remove_file(&device->dev, &dev_attr_display);
393	device_remove_file(&device->dev, &dev_attr_hddtemp);
394	device_remove_file(&device->dev, &dev_attr_als);
395	device_remove_file(&device->dev, &dev_attr_dock);
396	}
397
398	static int __init hp_wmi_bios_setup(struct platform_device *device)
399	{
400	int err;
401
402	err = device_create_file(&device->dev, &dev_attr_display);
403	if (err)
404	goto add_sysfs_error;
405	err = device_create_file(&device->dev, &dev_attr_hddtemp);
406	if (err)
407	goto add_sysfs_error;
408	err = device_create_file(&device->dev, &dev_attr_als);
409	if (err)
410	goto add_sysfs_error;
411	err = device_create_file(&device->dev, &dev_attr_dock);
412	if (err)
413	goto add_sysfs_error;
414
415	wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN);
416	wifi_rfkill->name = "hp-wifi";
417	wifi_rfkill->state = hp_wmi_wifi_state();
418	wifi_rfkill->toggle_radio = hp_wmi_wifi_set;
419	wifi_rfkill->user_claim_unsupported = 1;
420
421	bluetooth_rfkill = rfkill_allocate(&device->dev,
422	RFKILL_TYPE_BLUETOOTH);
423	bluetooth_rfkill->name = "hp-bluetooth";
424	bluetooth_rfkill->state = hp_wmi_bluetooth_state();
425	bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set;
426	bluetooth_rfkill->user_claim_unsupported = 1;
427
428	wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WIMAX);
429	wwan_rfkill->name = "hp-wwan";
430	wwan_rfkill->state = hp_wmi_wwan_state();
431	wwan_rfkill->toggle_radio = hp_wmi_wwan_set;
432	wwan_rfkill->user_claim_unsupported = 1;
433
434	rfkill_register(wifi_rfkill);
435	rfkill_register(bluetooth_rfkill);
436	rfkill_register(wwan_rfkill);
437
438	return 0;
439	add_sysfs_error:
440	cleanup_sysfs(device);
441	return err;
442	}
443
444	static int __exit hp_wmi_bios_remove(struct platform_device *device)
445	{
446	cleanup_sysfs(device);
447
448	rfkill_unregister(wifi_rfkill);
449	rfkill_unregister(bluetooth_rfkill);
450	rfkill_unregister(wwan_rfkill);
451
452	return 0;
453	}
454
455	static int __init hp_wmi_init(void)
456	{
457	int err;
458
459	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
460	err = wmi_install_notify_handler(HPWMI_EVENT_GUID,
461	hp_wmi_notify, NULL);
462	if (!err)
463	hp_wmi_input_setup();
464	}
465
466	if (wmi_has_guid(HPWMI_BIOS_GUID)) {
467	err = platform_driver_register(&hp_wmi_driver);
468	if (err)
469	return 0;
470	hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
471	if (!hp_wmi_platform_dev) {
472	platform_driver_unregister(&hp_wmi_driver);
473	return 0;
474	}
475	platform_device_add(hp_wmi_platform_dev);
476	}
477
478	return 0;
479	}
480
481	static void __exit hp_wmi_exit(void)
482	{
483	if (wmi_has_guid(HPWMI_EVENT_GUID)) {
484	wmi_remove_notify_handler(HPWMI_EVENT_GUID);
485	input_unregister_device(hp_wmi_input_dev);
486	}
487	if (hp_wmi_platform_dev) {
488	platform_device_del(hp_wmi_platform_dev);
489	platform_driver_unregister(&hp_wmi_driver);
490	}
491	}
492
493	module_init(hp_wmi_init);
494	module_exit(hp_wmi_exit);