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ideapad-laptop: Add Lenovo Yoga 900 to no_hw_rfkill dmi list
[mirror_ubuntu-bionic-kernel.git] / drivers / platform / x86 / asus-wmi.c
CommitLineData
ee027e4a 1/*
e12e6d94 2 * Asus PC WMI hotkey driver
ee027e4a
YW		 3 *
4 * Copyright(C) 2010 Intel Corporation.
57ab7dae 5 * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
ee027e4a
YW		 6 *
7 * Portions based on wistron_btns.c:
8 * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
9 * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
10 * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
81248889
YW		 27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28
ee027e4a
YW		 29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/types.h>
a32f3926 33#include <linux/slab.h>
ee027e4a
YW		 34#include <linux/input.h>
35#include <linux/input/sparse-keymap.h>
3d7b1655
YW		 36#include <linux/fb.h>
37#include <linux/backlight.h>
084fca63 38#include <linux/leds.h>
ba48fdb9 39#include <linux/rfkill.h>
afa7c886
CC		 40#include <linux/pci.h>
41#include <linux/pci_hotplug.h>
e07babde
CC		 42#include <linux/hwmon.h>
43#include <linux/hwmon-sysfs.h>
8c1b2d83
CC		 44#include <linux/debugfs.h>
45#include <linux/seq_file.h>
45f2c693 46#include <linux/platform_device.h>
6118b8ad 47#include <linux/thermal.h>
8b48463f 48#include <linux/acpi.h>
d8c66f62 49#include <linux/dmi.h>
272c77d5 50#include <acpi/video.h>
ee027e4a 51
e12e6d94 52#include "asus-wmi.h"
45f2c693 53
5909c654 54MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
e12e6d94
CC		 55 "Yong Wang <yong.y.wang@intel.com>");
56MODULE_DESCRIPTION("Asus Generic WMI Driver");
ee027e4a
YW		 57MODULE_LICENSE("GPL");
58
e12e6d94
CC		 59#define to_platform_driver(drv) \
60 (container_of((drv), struct platform_driver, driver))
d358cb55 61
e12e6d94
CC		 62#define to_asus_wmi_driver(pdrv) \
63 (container_of((pdrv), struct asus_wmi_driver, platform_driver))
ee027e4a 64
e12e6d94 65#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
ee027e4a 66
33e0e6fe
CC		 67#define NOTIFY_BRNUP_MIN 0x11
68#define NOTIFY_BRNUP_MAX 0x1f
69#define NOTIFY_BRNDOWN_MIN 0x20
70#define NOTIFY_BRNDOWN_MAX 0x2e
e9809c0b
CC		 71#define NOTIFY_KBD_BRTUP 0xc4
72#define NOTIFY_KBD_BRTDWN 0xc5
ee027e4a 73
43815941 74/* WMI Methods */
2f686b54
CC		 75#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
76#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
77#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
78#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
79#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
80#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
53e755c2 81#define ASUS_WMI_METHODID_AGFN 0x4E464741 /* FaN? */
2f686b54
CC		 82#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
83#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
84#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
85#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
86#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
87#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
88#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
89#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
90#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
91#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
92#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
93#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
94#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
3d7b1655 95
d33da3b6
CC		 96#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
97
43815941 98/* Wireless */
2f686b54
CC		 99#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
100#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
79ec1172 101#define ASUS_WMI_DEVID_CWAP 0x00010003
e12e6d94 102#define ASUS_WMI_DEVID_WLAN 0x00010011
a50bd128 103#define ASUS_WMI_DEVID_WLAN_LED 0x00010012
e12e6d94 104#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
2f686b54 105#define ASUS_WMI_DEVID_GPS 0x00010015
e12e6d94
CC		 106#define ASUS_WMI_DEVID_WIMAX 0x00010017
107#define ASUS_WMI_DEVID_WWAN3G 0x00010019
2f686b54
CC		 108#define ASUS_WMI_DEVID_UWB 0x00010021
109
110/* Leds */
111/* 0x000200XX and 0x000400XX */
79ec1172
CC		 112#define ASUS_WMI_DEVID_LED1 0x00020011
113#define ASUS_WMI_DEVID_LED2 0x00020012
114#define ASUS_WMI_DEVID_LED3 0x00020013
115#define ASUS_WMI_DEVID_LED4 0x00020014
116#define ASUS_WMI_DEVID_LED5 0x00020015
117#define ASUS_WMI_DEVID_LED6 0x00020016
43815941
CC		 118
119/* Backlight and Brightness */
e12e6d94
CC		 120#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
121#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
2f686b54
CC		 122#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
123#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
43815941
CC		 124
125/* Misc */
e12e6d94 126#define ASUS_WMI_DEVID_CAMERA 0x00060013
43815941
CC		 127
128/* Storage */
e12e6d94 129#define ASUS_WMI_DEVID_CARDREADER 0x00080013
43815941
CC		 130
131/* Input */
57ab7dae 132#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
e12e6d94 133#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
3d7b1655 134
2f686b54
CC		 135/* Fan, Thermal */
136#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
137#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
138
139/* Power */
140#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
141
c0b91b6d
AK		 142/* Deep S3 / Resume on LID open */
143#define ASUS_WMI_DEVID_LID_RESUME 0x00120031
144
43815941 145/* DSTS masks */
e12e6d94 146#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
a75fe0d7 147#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
e12e6d94 148#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
2f686b54
CC		 149#define ASUS_WMI_DSTS_USER_BIT 0x00020000
150#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
e12e6d94
CC		 151#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
152#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
ee027e4a 153
53e755c2
KB		 154#define ASUS_FAN_DESC "cpu_fan"
155#define ASUS_FAN_MFUN 0x13
156#define ASUS_FAN_SFUN_READ 0x06
157#define ASUS_FAN_SFUN_WRITE 0x07
158#define ASUS_FAN_CTRL_MANUAL 1
159#define ASUS_FAN_CTRL_AUTO 2
160
3d7b1655 161struct bios_args {
d33da3b6
CC		 162 u32 arg0;
163 u32 arg1;
164} __packed;
3d7b1655 165
53e755c2
KB		 166/*
167 * Struct that's used for all methods called via AGFN. Naming is
168 * identically to the AML code.
169 */
170struct agfn_args {
171 u16 mfun; /* probably "Multi-function" to be called */
172 u16 sfun; /* probably "Sub-function" to be called */
173 u16 len; /* size of the hole struct, including subfunction fields */
174 u8 stas; /* not used by now */
175 u8 err; /* zero on success */
176} __packed;
177
178/* struct used for calling fan read and write methods */
179struct fan_args {
180 struct agfn_args agfn; /* common fields */
181 u8 fan; /* fan number: 0: set auto mode 1: 1st fan */
182 u32 speed; /* read: RPM/100 - write: 0-255 */
183} __packed;
184
8c1b2d83 185/*
e12e6d94 186 * <platform>/ - debugfs root directory
8c1b2d83
CC		 187 * dev_id - current dev_id
188 * ctrl_param - current ctrl_param
ef343491 189 * method_id - current method_id
8c1b2d83
CC		 190 * devs - call DEVS(dev_id, ctrl_param) and print result
191 * dsts - call DSTS(dev_id) and print result
ef343491 192 * call - call method_id(dev_id, ctrl_param) and print result
8c1b2d83 193 */
e12e6d94 194struct asus_wmi_debug {
8c1b2d83 195 struct dentry *root;
ef343491 196 u32 method_id;
8c1b2d83
CC		 197 u32 dev_id;
198 u32 ctrl_param;
199};
200
a7ce3f04
CC		 201struct asus_rfkill {
202 struct asus_wmi *asus;
203 struct rfkill *rfkill;
204 u32 dev_id;
205};
206
e12e6d94 207struct asus_wmi {
1d070f89 208 int dsts_id;
46dbca87
CC		 209 int spec;
210 int sfun;
1d070f89 211
81248889 212 struct input_dev *inputdev;
3d7b1655 213 struct backlight_device *backlight_device;
27c136c8 214 struct platform_device *platform_device;
084fca63 215
6cae06e6
AK		 216 struct led_classdev wlan_led;
217 int wlan_led_wk;
084fca63
CC		 218 struct led_classdev tpd_led;
219 int tpd_led_wk;
e9809c0b
CC		 220 struct led_classdev kbd_led;
221 int kbd_led_wk;
084fca63
CC		 222 struct workqueue_struct *led_workqueue;
223 struct work_struct tpd_led_work;
e9809c0b 224 struct work_struct kbd_led_work;
6cae06e6 225 struct work_struct wlan_led_work;
ba48fdb9 226
a7ce3f04
CC		 227 struct asus_rfkill wlan;
228 struct asus_rfkill bluetooth;
229 struct asus_rfkill wimax;
230 struct asus_rfkill wwan3g;
43be8bde 231 struct asus_rfkill gps;
a912d329 232 struct asus_rfkill uwb;
8c1b2d83 233
53e755c2
KB		 234 bool asus_hwmon_fan_manual_mode;
235 int asus_hwmon_num_fans;
236 int asus_hwmon_pwm;
237
afa7c886
CC		 238 struct hotplug_slot *hotplug_slot;
239 struct mutex hotplug_lock;
279f8f95
CC		 240 struct mutex wmi_lock;
241 struct workqueue_struct *hotplug_workqueue;
242 struct work_struct hotplug_work;
afa7c886 243
e12e6d94
CC		 244 struct asus_wmi_debug debug;
245
246 struct asus_wmi_driver *driver;
81248889
YW		 247};
248
e12e6d94 249static int asus_wmi_input_init(struct asus_wmi *asus)
ee027e4a
YW		 250{
251 int err;
252
e12e6d94
CC		 253 asus->inputdev = input_allocate_device();
254 if (!asus->inputdev)
ee027e4a
YW		 255 return -ENOMEM;
256
58a9f397
CC		 257 asus->inputdev->name = asus->driver->input_name;
258 asus->inputdev->phys = asus->driver->input_phys;
e12e6d94
CC		 259 asus->inputdev->id.bustype = BUS_HOST;
260 asus->inputdev->dev.parent = &asus->platform_device->dev;
39bbde05 261 set_bit(EV_REP, asus->inputdev->evbit);
ee027e4a 262
e12e6d94 263 err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
ee027e4a
YW		 264 if (err)
265 goto err_free_dev;
266
e12e6d94 267 err = input_register_device(asus->inputdev);
ee027e4a
YW		 268 if (err)
269 goto err_free_keymap;
270
271 return 0;
272
273err_free_keymap:
e12e6d94 274 sparse_keymap_free(asus->inputdev);
ee027e4a 275err_free_dev:
e12e6d94 276 input_free_device(asus->inputdev);
ee027e4a
YW		 277 return err;
278}
279
e12e6d94 280static void asus_wmi_input_exit(struct asus_wmi *asus)
81248889 281{
e12e6d94
CC		 282 if (asus->inputdev) {
283 sparse_keymap_free(asus->inputdev);
284 input_unregister_device(asus->inputdev);
81248889
YW		 285 }
286
e12e6d94 287 asus->inputdev = NULL;
81248889
YW		 288}
289
d33da3b6
CC		 290static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
291 u32 *retval)
3d7b1655 292{
d33da3b6
CC		 293 struct bios_args args = {
294 .arg0 = arg0,
295 .arg1 = arg1,
296 };
297 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
3d7b1655 298 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
3d7b1655 299 acpi_status status;
d33da3b6 300 union acpi_object *obj;
8ad3be1e 301 u32 tmp = 0;
3d7b1655 302
d33da3b6 303 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
afa7c886 304 &input, &output);
3d7b1655
YW		 305
306 if (ACPI_FAILURE(status))
d33da3b6 307 goto exit;
3d7b1655
YW		 308
309 obj = (union acpi_object *)output.pointer;
310 if (obj && obj->type == ACPI_TYPE_INTEGER)
e12e6d94 311 tmp = (u32) obj->integer.value;
3d7b1655 312
2a3f0064
CC		 313 if (retval)
314 *retval = tmp;
3d7b1655
YW		 315
316 kfree(obj);
317
d33da3b6
CC		 318exit:
319 if (ACPI_FAILURE(status))
320 return -EIO;
321
322 if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
323 return -ENODEV;
3d7b1655 324
d33da3b6 325 return 0;
3d7b1655
YW		 326}
327
53e755c2
KB		 328static int asus_wmi_evaluate_method_agfn(const struct acpi_buffer args)
329{
330 struct acpi_buffer input;
331 u64 phys_addr;
332 u32 retval;
333 u32 status = -1;
334
335 /*
336 * Copy to dma capable address otherwise memory corruption occurs as
337 * bios has to be able to access it.
338 */
339 input.pointer = kzalloc(args.length, GFP_DMA | GFP_KERNEL);
340 input.length = args.length;
341 if (!input.pointer)
342 return -ENOMEM;
343 phys_addr = virt_to_phys(input.pointer);
344 memcpy(input.pointer, args.pointer, args.length);
345
346 status = asus_wmi_evaluate_method(ASUS_WMI_METHODID_AGFN,
347 phys_addr, 0, &retval);
348 if (!status)
349 memcpy(args.pointer, input.pointer, args.length);
350
351 kfree(input.pointer);
352 if (status)
353 return -ENXIO;
354
355 return retval;
356}
357
1d070f89 358static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
3d7b1655 359{
1d070f89 360 return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
d33da3b6 361}
3d7b1655 362
d33da3b6 363static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
1d070f89 364 u32 *retval)
d33da3b6
CC		 365{
366 return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
367 ctrl_param, retval);
3d7b1655
YW		 368}
369
5c95638d 370/* Helper for special devices with magic return codes */
1d070f89
CC		 371static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
372 u32 dev_id, u32 mask)
5c95638d
CC		 373{
374 u32 retval = 0;
d33da3b6 375 int err;
5c95638d 376
1d070f89 377 err = asus_wmi_get_devstate(asus, dev_id, &retval);
5c95638d 378
d33da3b6
CC		 379 if (err < 0)
380 return err;
5c95638d 381
e12e6d94 382 if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
5c95638d
CC		 383 return -ENODEV;
384
a75fe0d7
CC		 385 if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
386 if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
387 return -ENODEV;
388 }
389
b7187265
CC		 390 return retval & mask;
391}
392
1d070f89 393static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
b7187265 394{
1d070f89
CC		 395 return asus_wmi_get_devstate_bits(asus, dev_id,
396 ASUS_WMI_DSTS_STATUS_BIT);
5c95638d
CC		 397}
398
084fca63
CC		 399/*
400 * LEDs
401 */
402/*
403 * These functions actually update the LED's, and are called from a
404 * workqueue. By doing this as separate work rather than when the LED
e12e6d94 405 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
084fca63
CC		 406 * potentially bad time, such as a timer interrupt.
407 */
408static void tpd_led_update(struct work_struct *work)
409{
410 int ctrl_param;
e12e6d94 411 struct asus_wmi *asus;
084fca63 412
e12e6d94 413 asus = container_of(work, struct asus_wmi, tpd_led_work);
084fca63 414
e12e6d94
CC		 415 ctrl_param = asus->tpd_led_wk;
416 asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
084fca63
CC		 417}
418
419static void tpd_led_set(struct led_classdev *led_cdev,
420 enum led_brightness value)
421{
e12e6d94 422 struct asus_wmi *asus;
084fca63 423
e12e6d94 424 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
084fca63 425
e12e6d94
CC		 426 asus->tpd_led_wk = !!value;
427 queue_work(asus->led_workqueue, &asus->tpd_led_work);
084fca63
CC		 428}
429
e12e6d94 430static int read_tpd_led_state(struct asus_wmi *asus)
084fca63 431{
1d070f89 432 return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
084fca63
CC		 433}
434
435static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
436{
e12e6d94 437 struct asus_wmi *asus;
084fca63 438
e12e6d94 439 asus = container_of(led_cdev, struct asus_wmi, tpd_led);
084fca63 440
e12e6d94 441 return read_tpd_led_state(asus);
084fca63
CC		 442}
443
e9809c0b 444static void kbd_led_update(struct work_struct *work)
084fca63 445{
e9809c0b
CC		 446 int ctrl_param = 0;
447 struct asus_wmi *asus;
084fca63 448
e9809c0b 449 asus = container_of(work, struct asus_wmi, kbd_led_work);
084fca63 450
e9809c0b
CC		 451 /*
452 * bits 0-2: level
453 * bit 7: light on/off
454 */
455 if (asus->kbd_led_wk > 0)
456 ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
084fca63 457
e9809c0b
CC		 458 asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
459}
084fca63 460
e9809c0b
CC		 461static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
462{
463 int retval;
464
465 /*
466 * bits 0-2: level
467 * bit 7: light on/off
468 * bit 8-10: environment (0: dark, 1: normal, 2: light)
469 * bit 17: status unknown
470 */
471 retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
472 0xFFFF);
473
af965e97 474 /* Unknown status is considered as off */
e9809c0b 475 if (retval == 0x8000)
af965e97 476 retval = 0;
e9809c0b
CC		 477
478 if (retval >= 0) {
479 if (level)
c09b2237 480 *level = retval & 0x7F;
e9809c0b
CC		 481 if (env)
482 *env = (retval >> 8) & 0x7F;
483 retval = 0;
084fca63
CC		 484 }
485
e9809c0b
CC		 486 return retval;
487}
488
489static void kbd_led_set(struct led_classdev *led_cdev,
490 enum led_brightness value)
491{
492 struct asus_wmi *asus;
493
494 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
495
496 if (value > asus->kbd_led.max_brightness)
497 value = asus->kbd_led.max_brightness;
498 else if (value < 0)
499 value = 0;
500
501 asus->kbd_led_wk = value;
502 queue_work(asus->led_workqueue, &asus->kbd_led_work);
503}
504
505static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
506{
507 struct asus_wmi *asus;
508 int retval, value;
509
510 asus = container_of(led_cdev, struct asus_wmi, kbd_led);
511
512 retval = kbd_led_read(asus, &value, NULL);
513
514 if (retval < 0)
515 return retval;
516
517 return value;
084fca63
CC		 518}
519
6cae06e6
AK		 520static int wlan_led_unknown_state(struct asus_wmi *asus)
521{
522 u32 result;
523
524 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
525
526 return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
527}
528
529static int wlan_led_presence(struct asus_wmi *asus)
530{
531 u32 result;
532
533 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
534
535 return result & ASUS_WMI_DSTS_PRESENCE_BIT;
536}
537
538static void wlan_led_update(struct work_struct *work)
539{
540 int ctrl_param;
541 struct asus_wmi *asus;
542
543 asus = container_of(work, struct asus_wmi, wlan_led_work);
544
545 ctrl_param = asus->wlan_led_wk;
546 asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
547}
548
549static void wlan_led_set(struct led_classdev *led_cdev,
550 enum led_brightness value)
551{
552 struct asus_wmi *asus;
553
554 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
555
556 asus->wlan_led_wk = !!value;
557 queue_work(asus->led_workqueue, &asus->wlan_led_work);
558}
559
560static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
561{
562 struct asus_wmi *asus;
563 u32 result;
564
565 asus = container_of(led_cdev, struct asus_wmi, wlan_led);
566 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
567
568 return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
569}
570
e12e6d94 571static void asus_wmi_led_exit(struct asus_wmi *asus)
084fca63 572{
e9298028
AL		 573 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
574 led_classdev_unregister(&asus->kbd_led);
575 if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
e12e6d94 576 led_classdev_unregister(&asus->tpd_led);
6cae06e6
AK		 577 if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
578 led_classdev_unregister(&asus->wlan_led);
e12e6d94
CC		 579 if (asus->led_workqueue)
580 destroy_workqueue(asus->led_workqueue);
084fca63
CC		 581}
582
e9809c0b
CC		 583static int asus_wmi_led_init(struct asus_wmi *asus)
584{
30734049 585 int rv = 0, led_val;
e9809c0b
CC		 586
587 asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
588 if (!asus->led_workqueue)
589 return -ENOMEM;
590
591 if (read_tpd_led_state(asus) >= 0) {
592 INIT_WORK(&asus->tpd_led_work, tpd_led_update);
593
594 asus->tpd_led.name = "asus::touchpad";
595 asus->tpd_led.brightness_set = tpd_led_set;
596 asus->tpd_led.brightness_get = tpd_led_get;
597 asus->tpd_led.max_brightness = 1;
598
599 rv = led_classdev_register(&asus->platform_device->dev,
600 &asus->tpd_led);
601 if (rv)
602 goto error;
603 }
604
30734049
OR		 605 led_val = kbd_led_read(asus, NULL, NULL);
606 if (led_val >= 0) {
e9809c0b
CC		 607 INIT_WORK(&asus->kbd_led_work, kbd_led_update);
608
30734049 609 asus->kbd_led_wk = led_val;
e9809c0b
CC		 610 asus->kbd_led.name = "asus::kbd_backlight";
611 asus->kbd_led.brightness_set = kbd_led_set;
612 asus->kbd_led.brightness_get = kbd_led_get;
613 asus->kbd_led.max_brightness = 3;
614
615 rv = led_classdev_register(&asus->platform_device->dev,
616 &asus->kbd_led);
6cae06e6
AK		 617 if (rv)
618 goto error;
619 }
620
f515623c 621 if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
6cae06e6
AK		 622 INIT_WORK(&asus->wlan_led_work, wlan_led_update);
623
624 asus->wlan_led.name = "asus::wlan";
625 asus->wlan_led.brightness_set = wlan_led_set;
626 if (!wlan_led_unknown_state(asus))
627 asus->wlan_led.brightness_get = wlan_led_get;
628 asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
629 asus->wlan_led.max_brightness = 1;
630 asus->wlan_led.default_trigger = "asus-wlan";
631
632 rv = led_classdev_register(&asus->platform_device->dev,
633 &asus->wlan_led);
e9809c0b
CC		 634 }
635
636error:
637 if (rv)
638 asus_wmi_led_exit(asus);
639
640 return rv;
641}
642
643
afa7c886
CC		 644/*
645 * PCI hotplug (for wlan rfkill)
646 */
e12e6d94 647static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
afa7c886 648{
1d070f89 649 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
afa7c886 650
5c95638d 651 if (result < 0)
afa7c886 652 return false;
5c95638d 653 return !result;
afa7c886
CC		 654}
655
e12e6d94 656static void asus_rfkill_hotplug(struct asus_wmi *asus)
afa7c886
CC		 657{
658 struct pci_dev *dev;
659 struct pci_bus *bus;
279f8f95 660 bool blocked;
afa7c886
CC		 661 bool absent;
662 u32 l;
663
e12e6d94
CC		 664 mutex_lock(&asus->wmi_lock);
665 blocked = asus_wlan_rfkill_blocked(asus);
666 mutex_unlock(&asus->wmi_lock);
afa7c886 667
e12e6d94 668 mutex_lock(&asus->hotplug_lock);
8b9ec1da 669 pci_lock_rescan_remove();
afa7c886 670
a7ce3f04
CC		 671 if (asus->wlan.rfkill)
672 rfkill_set_sw_state(asus->wlan.rfkill, blocked);
279f8f95 673
e12e6d94 674 if (asus->hotplug_slot) {
afa7c886
CC		 675 bus = pci_find_bus(0, 1);
676 if (!bus) {
5ad77dcf 677 pr_warn("Unable to find PCI bus 1?\n");
afa7c886
CC		 678 goto out_unlock;
679 }
680
681 if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
682 pr_err("Unable to read PCI config space?\n");
683 goto out_unlock;
684 }
685 absent = (l == 0xffffffff);
686
687 if (blocked != absent) {
5ad77dcf
JP		 688 pr_warn("BIOS says wireless lan is %s, "
689 "but the pci device is %s\n",
690 blocked ? "blocked" : "unblocked",
691 absent ? "absent" : "present");
692 pr_warn("skipped wireless hotplug as probably "
693 "inappropriate for this model\n");
afa7c886
CC		 694 goto out_unlock;
695 }
696
697 if (!blocked) {
698 dev = pci_get_slot(bus, 0);
699 if (dev) {
700 /* Device already present */
701 pci_dev_put(dev);
702 goto out_unlock;
703 }
704 dev = pci_scan_single_device(bus, 0);
705 if (dev) {
706 pci_bus_assign_resources(bus);
c893d133 707 pci_bus_add_device(dev);
afa7c886
CC		 708 }
709 } else {
710 dev = pci_get_slot(bus, 0);
711 if (dev) {
210647af 712 pci_stop_and_remove_bus_device(dev);
afa7c886
CC		 713 pci_dev_put(dev);
714 }
715 }
716 }
717
718out_unlock:
8b9ec1da 719 pci_unlock_rescan_remove();
e12e6d94 720 mutex_unlock(&asus->hotplug_lock);
afa7c886
CC		 721}
722
e12e6d94 723static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
afa7c886 724{
e12e6d94 725 struct asus_wmi *asus = data;
afa7c886
CC		 726
727 if (event != ACPI_NOTIFY_BUS_CHECK)
728 return;
729
279f8f95 730 /*
e12e6d94 731 * We can't call directly asus_rfkill_hotplug because most
279f8f95
CC		 732 * of the time WMBC is still being executed and not reetrant.
733 * There is currently no way to tell ACPICA that we want this
e12e6d94 734 * method to be serialized, we schedule a asus_rfkill_hotplug
279f8f95
CC		 735 * call later, in a safer context.
736 */
e12e6d94 737 queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
afa7c886
CC		 738}
739
e12e6d94 740static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
afa7c886
CC		 741{
742 acpi_status status;
743 acpi_handle handle;
744
745 status = acpi_get_handle(NULL, node, &handle);
746
747 if (ACPI_SUCCESS(status)) {
748 status = acpi_install_notify_handler(handle,
749 ACPI_SYSTEM_NOTIFY,
e12e6d94 750 asus_rfkill_notify, asus);
afa7c886 751 if (ACPI_FAILURE(status))
5ad77dcf 752 pr_warn("Failed to register notify on %s\n", node);
afa7c886
CC		 753 } else
754 return -ENODEV;
755
756 return 0;
757}
758
e12e6d94 759static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
afa7c886
CC		 760{
761 acpi_status status = AE_OK;
762 acpi_handle handle;
763
764 status = acpi_get_handle(NULL, node, &handle);
765
766 if (ACPI_SUCCESS(status)) {
767 status = acpi_remove_notify_handler(handle,
e12e6d94
CC		 768 ACPI_SYSTEM_NOTIFY,
769 asus_rfkill_notify);
afa7c886
CC		 770 if (ACPI_FAILURE(status))
771 pr_err("Error removing rfkill notify handler %s\n",
e12e6d94 772 node);
afa7c886
CC		 773 }
774}
775
e12e6d94
CC		 776static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
777 u8 *value)
afa7c886 778{
1d070f89
CC		 779 struct asus_wmi *asus = hotplug_slot->private;
780 int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
afa7c886 781
5c95638d
CC		 782 if (result < 0)
783 return result;
afa7c886 784
5c95638d 785 *value = !!result;
afa7c886
CC		 786 return 0;
787}
788
e12e6d94 789static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
afa7c886
CC		 790{
791 kfree(hotplug_slot->info);
792 kfree(hotplug_slot);
793}
794
e12e6d94 795static struct hotplug_slot_ops asus_hotplug_slot_ops = {
afa7c886 796 .owner = THIS_MODULE,
e12e6d94
CC		 797 .get_adapter_status = asus_get_adapter_status,
798 .get_power_status = asus_get_adapter_status,
afa7c886
CC		 799};
800
e12e6d94 801static void asus_hotplug_work(struct work_struct *work)
279f8f95 802{
e12e6d94 803 struct asus_wmi *asus;
279f8f95 804
e12e6d94
CC		 805 asus = container_of(work, struct asus_wmi, hotplug_work);
806 asus_rfkill_hotplug(asus);
279f8f95
CC		 807}
808
e12e6d94 809static int asus_setup_pci_hotplug(struct asus_wmi *asus)
afa7c886
CC		 810{
811 int ret = -ENOMEM;
812 struct pci_bus *bus = pci_find_bus(0, 1);
813
814 if (!bus) {
815 pr_err("Unable to find wifi PCI bus\n");
816 return -ENODEV;
817 }
818
e12e6d94
CC		 819 asus->hotplug_workqueue =
820 create_singlethread_workqueue("hotplug_workqueue");
821 if (!asus->hotplug_workqueue)
279f8f95
CC		 822 goto error_workqueue;
823
e12e6d94 824 INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
279f8f95 825
e12e6d94
CC		 826 asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
827 if (!asus->hotplug_slot)
afa7c886
CC		 828 goto error_slot;
829
e12e6d94
CC		 830 asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
831 GFP_KERNEL);
832 if (!asus->hotplug_slot->info)
afa7c886
CC		 833 goto error_info;
834
e12e6d94
CC		 835 asus->hotplug_slot->private = asus;
836 asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
837 asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
838 asus_get_adapter_status(asus->hotplug_slot,
839 &asus->hotplug_slot->info->adapter_status);
afa7c886 840
e12e6d94 841 ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
afa7c886
CC		 842 if (ret) {
843 pr_err("Unable to register hotplug slot - %d\n", ret);
844 goto error_register;
845 }
846
847 return 0;
848
849error_register:
e12e6d94 850 kfree(asus->hotplug_slot->info);
afa7c886 851error_info:
e12e6d94
CC		 852 kfree(asus->hotplug_slot);
853 asus->hotplug_slot = NULL;
afa7c886 854error_slot:
e12e6d94 855 destroy_workqueue(asus->hotplug_workqueue);
279f8f95 856error_workqueue:
afa7c886
CC		 857 return ret;
858}
859
ba48fdb9
CC		 860/*
861 * Rfkill devices
862 */
e12e6d94 863static int asus_rfkill_set(void *data, bool blocked)
ba48fdb9 864{
a7ce3f04 865 struct asus_rfkill *priv = data;
ba48fdb9 866 u32 ctrl_param = !blocked;
a50bd128 867 u32 dev_id = priv->dev_id;
ba48fdb9 868
a50bd128
AK		 869 /*
870 * If the user bit is set, BIOS can't set and record the wlan status,
871 * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
872 * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
873 * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
874 * while setting the wlan status through WMI.
875 * This is also the behavior that windows app will do.
876 */
877 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
878 priv->asus->driver->wlan_ctrl_by_user)
879 dev_id = ASUS_WMI_DEVID_WLAN_LED;
880
881 return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
ba48fdb9
CC		 882}
883
e12e6d94 884static void asus_rfkill_query(struct rfkill *rfkill, void *data)
ba48fdb9 885{
a7ce3f04 886 struct asus_rfkill *priv = data;
5c95638d 887 int result;
ba48fdb9 888
1d070f89 889 result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
ba48fdb9 890
5c95638d 891 if (result < 0)
e12e6d94 892 return;
ba48fdb9 893
a7ce3f04 894 rfkill_set_sw_state(priv->rfkill, !result);
ba48fdb9
CC		 895}
896
e12e6d94 897static int asus_rfkill_wlan_set(void *data, bool blocked)
279f8f95 898{
a7ce3f04
CC		 899 struct asus_rfkill *priv = data;
900 struct asus_wmi *asus = priv->asus;
279f8f95
CC		 901 int ret;
902
903 /*
904 * This handler is enabled only if hotplug is enabled.
e12e6d94 905 * In this case, the asus_wmi_set_devstate() will
279f8f95
CC		 906 * trigger a wmi notification and we need to wait
907 * this call to finish before being able to call
908 * any wmi method
909 */
e12e6d94 910 mutex_lock(&asus->wmi_lock);
a7ce3f04 911 ret = asus_rfkill_set(data, blocked);
e12e6d94 912 mutex_unlock(&asus->wmi_lock);
279f8f95
CC		 913 return ret;
914}
915
e12e6d94
CC		 916static const struct rfkill_ops asus_rfkill_wlan_ops = {
917 .set_block = asus_rfkill_wlan_set,
a7ce3f04 918 .query = asus_rfkill_query,
279f8f95
CC		 919};
920
e12e6d94
CC		 921static const struct rfkill_ops asus_rfkill_ops = {
922 .set_block = asus_rfkill_set,
923 .query = asus_rfkill_query,
ba48fdb9
CC		 924};
925
e12e6d94 926static int asus_new_rfkill(struct asus_wmi *asus,
a7ce3f04 927 struct asus_rfkill *arfkill,
e12e6d94 928 const char *name, enum rfkill_type type, int dev_id)
ba48fdb9 929{
1d070f89 930 int result = asus_wmi_get_devstate_simple(asus, dev_id);
a7ce3f04 931 struct rfkill **rfkill = &arfkill->rfkill;
ba48fdb9 932
5c95638d
CC		 933 if (result < 0)
934 return result;
ba48fdb9 935
a7ce3f04
CC		 936 arfkill->dev_id = dev_id;
937 arfkill->asus = asus;
938
c87992d1
AK		 939 if (dev_id == ASUS_WMI_DEVID_WLAN &&
940 asus->driver->quirks->hotplug_wireless)
e12e6d94 941 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
a7ce3f04 942 &asus_rfkill_wlan_ops, arfkill);
279f8f95 943 else
e12e6d94 944 *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
a7ce3f04 945 &asus_rfkill_ops, arfkill);
ba48fdb9
CC		 946
947 if (!*rfkill)
948 return -EINVAL;
949
e8f56c80 950 if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
f515623c 951 (asus->driver->quirks->wapf > 0))
6cae06e6
AK		 952 rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
953
5c95638d 954 rfkill_init_sw_state(*rfkill, !result);
ba48fdb9
CC		 955 result = rfkill_register(*rfkill);
956 if (result) {
957 rfkill_destroy(*rfkill);
958 *rfkill = NULL;
959 return result;
960 }
961 return 0;
962}
963
e12e6d94 964static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
ba48fdb9 965{
e12e6d94
CC		 966 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
967 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
968 asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
a7ce3f04
CC		 969 if (asus->wlan.rfkill) {
970 rfkill_unregister(asus->wlan.rfkill);
971 rfkill_destroy(asus->wlan.rfkill);
972 asus->wlan.rfkill = NULL;
ba48fdb9 973 }
afa7c886
CC		 974 /*
975 * Refresh pci hotplug in case the rfkill state was changed after
e12e6d94 976 * asus_unregister_rfkill_notifier()
afa7c886 977 */
e12e6d94
CC		 978 asus_rfkill_hotplug(asus);
979 if (asus->hotplug_slot)
980 pci_hp_deregister(asus->hotplug_slot);
981 if (asus->hotplug_workqueue)
982 destroy_workqueue(asus->hotplug_workqueue);
983
a7ce3f04
CC		 984 if (asus->bluetooth.rfkill) {
985 rfkill_unregister(asus->bluetooth.rfkill);
986 rfkill_destroy(asus->bluetooth.rfkill);
987 asus->bluetooth.rfkill = NULL;
ba48fdb9 988 }
a7ce3f04
CC		 989 if (asus->wimax.rfkill) {
990 rfkill_unregister(asus->wimax.rfkill);
991 rfkill_destroy(asus->wimax.rfkill);
992 asus->wimax.rfkill = NULL;
2e9e159d 993 }
a7ce3f04
CC		 994 if (asus->wwan3g.rfkill) {
995 rfkill_unregister(asus->wwan3g.rfkill);
996 rfkill_destroy(asus->wwan3g.rfkill);
997 asus->wwan3g.rfkill = NULL;
ba48fdb9 998 }
43be8bde
CC		 999 if (asus->gps.rfkill) {
1000 rfkill_unregister(asus->gps.rfkill);
1001 rfkill_destroy(asus->gps.rfkill);
1002 asus->gps.rfkill = NULL;
1003 }
a912d329
CC		 1004 if (asus->uwb.rfkill) {
1005 rfkill_unregister(asus->uwb.rfkill);
1006 rfkill_destroy(asus->uwb.rfkill);
1007 asus->uwb.rfkill = NULL;
1008 }
ba48fdb9
CC		 1009}
1010
e12e6d94 1011static int asus_wmi_rfkill_init(struct asus_wmi *asus)
ba48fdb9
CC		 1012{
1013 int result = 0;
1014
e12e6d94
CC		 1015 mutex_init(&asus->hotplug_lock);
1016 mutex_init(&asus->wmi_lock);
afa7c886 1017
a7ce3f04
CC		 1018 result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
1019 RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
ba48fdb9
CC		 1020
1021 if (result && result != -ENODEV)
1022 goto exit;
1023
a7ce3f04 1024 result = asus_new_rfkill(asus, &asus->bluetooth,
e12e6d94
CC		 1025 "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
1026 ASUS_WMI_DEVID_BLUETOOTH);
ba48fdb9
CC		 1027
1028 if (result && result != -ENODEV)
1029 goto exit;
1030
a7ce3f04
CC		 1031 result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
1032 RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
2e9e159d
CC		 1033
1034 if (result && result != -ENODEV)
1035 goto exit;
1036
a7ce3f04
CC		 1037 result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
1038 RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
ba48fdb9
CC		 1039
1040 if (result && result != -ENODEV)
1041 goto exit;
1042
43be8bde
CC		 1043 result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
1044 RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
1045
1046 if (result && result != -ENODEV)
1047 goto exit;
1048
a912d329
CC		 1049 result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
1050 RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
1051
1052 if (result && result != -ENODEV)
1053 goto exit;
1054
c87992d1 1055 if (!asus->driver->quirks->hotplug_wireless)
c14d4b8e
CC		 1056 goto exit;
1057
e12e6d94 1058 result = asus_setup_pci_hotplug(asus);
afa7c886
CC		 1059 /*
1060 * If we get -EBUSY then something else is handling the PCI hotplug -
1061 * don't fail in this case
1062 */
1063 if (result == -EBUSY)
1064 result = 0;
1065
e12e6d94
CC		 1066 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
1067 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
1068 asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
afa7c886
CC		 1069 /*
1070 * Refresh pci hotplug in case the rfkill state was changed during
1071 * setup.
1072 */
e12e6d94 1073 asus_rfkill_hotplug(asus);
afa7c886 1074
ba48fdb9
CC		 1075exit:
1076 if (result && result != -ENODEV)
e12e6d94 1077 asus_wmi_rfkill_exit(asus);
ba48fdb9
CC		 1078
1079 if (result == -ENODEV)
1080 result = 0;
1081
1082 return result;
1083}
1084
e07babde
CC		 1085/*
1086 * Hwmon device
1087 */
53e755c2
KB		 1088static int asus_hwmon_agfn_fan_speed_read(struct asus_wmi *asus, int fan,
1089 int *speed)
1090{
1091 struct fan_args args = {
1092 .agfn.len = sizeof(args),
1093 .agfn.mfun = ASUS_FAN_MFUN,
1094 .agfn.sfun = ASUS_FAN_SFUN_READ,
1095 .fan = fan,
1096 .speed = 0,
1097 };
1098 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1099 int status;
1100
1101 if (fan != 1)
1102 return -EINVAL;
1103
1104 status = asus_wmi_evaluate_method_agfn(input);
1105
1106 if (status || args.agfn.err)
1107 return -ENXIO;
1108
1109 if (speed)
1110 *speed = args.speed;
1111
1112 return 0;
1113}
1114
1115static int asus_hwmon_agfn_fan_speed_write(struct asus_wmi *asus, int fan,
1116 int *speed)
1117{
1118 struct fan_args args = {
1119 .agfn.len = sizeof(args),
1120 .agfn.mfun = ASUS_FAN_MFUN,
1121 .agfn.sfun = ASUS_FAN_SFUN_WRITE,
1122 .fan = fan,
1123 .speed = speed ? *speed : 0,
1124 };
1125 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1126 int status;
1127
1128 /* 1: for setting 1st fan's speed 0: setting auto mode */
1129 if (fan != 1 && fan != 0)
1130 return -EINVAL;
1131
1132 status = asus_wmi_evaluate_method_agfn(input);
1133
1134 if (status || args.agfn.err)
1135 return -ENXIO;
1136
1137 if (speed && fan == 1)
1138 asus->asus_hwmon_pwm = *speed;
1139
1140 return 0;
1141}
1142
1143/*
1144 * Check if we can read the speed of one fan. If true we assume we can also
1145 * control it.
1146 */
1147static int asus_hwmon_get_fan_number(struct asus_wmi *asus, int *num_fans)
1148{
1149 int status;
1150 int speed = 0;
1151
1152 *num_fans = 0;
1153
1154 status = asus_hwmon_agfn_fan_speed_read(asus, 1, &speed);
1155 if (!status)
1156 *num_fans = 1;
1157
1158 return 0;
1159}
1160
1161static int asus_hwmon_fan_set_auto(struct asus_wmi *asus)
1162{
1163 int status;
1164
1165 status = asus_hwmon_agfn_fan_speed_write(asus, 0, NULL);
1166 if (status)
1167 return -ENXIO;
1168
1169 asus->asus_hwmon_fan_manual_mode = false;
1170
1171 return 0;
1172}
1173
1174static int asus_hwmon_fan_rpm_show(struct device *dev, int fan)
e07babde
CC		 1175{
1176 struct asus_wmi *asus = dev_get_drvdata(dev);
53e755c2
KB		 1177 int value;
1178 int ret;
1179
1180 /* no speed readable on manual mode */
1181 if (asus->asus_hwmon_fan_manual_mode)
1182 return -ENXIO;
1183
1184 ret = asus_hwmon_agfn_fan_speed_read(asus, fan+1, &value);
1185 if (ret) {
1186 pr_warn("reading fan speed failed: %d\n", ret);
1187 return -ENXIO;
1188 }
1189
1190 return value;
1191}
1192
1193static void asus_hwmon_pwm_show(struct asus_wmi *asus, int fan, int *value)
1194{
e07babde
CC		 1195 int err;
1196
53e755c2
KB		 1197 if (asus->asus_hwmon_pwm >= 0) {
1198 *value = asus->asus_hwmon_pwm;
1199 return;
1200 }
e07babde 1201
53e755c2 1202 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, value);
e07babde 1203 if (err < 0)
53e755c2 1204 return;
e07babde 1205
53e755c2
KB		 1206 *value &= 0xFF;
1207
1208 if (*value == 1) /* Low Speed */
1209 *value = 85;
1210 else if (*value == 2)
1211 *value = 170;
1212 else if (*value == 3)
1213 *value = 255;
1214 else if (*value) {
1215 pr_err("Unknown fan speed %#x\n", *value);
1216 *value = -1;
e07babde 1217 }
53e755c2
KB		 1218}
1219
1220static ssize_t pwm1_show(struct device *dev,
1221 struct device_attribute *attr,
1222 char *buf)
1223{
1224 struct asus_wmi *asus = dev_get_drvdata(dev);
1225 int value;
1226
1227 asus_hwmon_pwm_show(asus, 0, &value);
e07babde
CC		 1228
1229 return sprintf(buf, "%d\n", value);
1230}
1231
53e755c2
KB		 1232static ssize_t pwm1_store(struct device *dev,
1233 struct device_attribute *attr,
1234 const char *buf, size_t count) {
1235 struct asus_wmi *asus = dev_get_drvdata(dev);
1236 int value;
1237 int state;
1238 int ret;
1239
1240 ret = kstrtouint(buf, 10, &value);
1241
1242 if (ret)
1243 return ret;
1244
1245 value = clamp(value, 0, 255);
1246
1247 state = asus_hwmon_agfn_fan_speed_write(asus, 1, &value);
1248 if (state)
1249 pr_warn("Setting fan speed failed: %d\n", state);
1250 else
1251 asus->asus_hwmon_fan_manual_mode = true;
1252
1253 return count;
1254}
1255
1256static ssize_t fan1_input_show(struct device *dev,
1257 struct device_attribute *attr,
1258 char *buf)
1259{
1260 int value = asus_hwmon_fan_rpm_show(dev, 0);
1261
1262 return sprintf(buf, "%d\n", value < 0 ? -1 : value*100);
1263
1264}
1265
1266static ssize_t pwm1_enable_show(struct device *dev,
1267 struct device_attribute *attr,
1268 char *buf)
1269{
1270 struct asus_wmi *asus = dev_get_drvdata(dev);
1271
1272 if (asus->asus_hwmon_fan_manual_mode)
1273 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_MANUAL);
1274
1275 return sprintf(buf, "%d\n", ASUS_FAN_CTRL_AUTO);
1276}
1277
1278static ssize_t pwm1_enable_store(struct device *dev,
1279 struct device_attribute *attr,
1280 const char *buf, size_t count)
1281{
1282 struct asus_wmi *asus = dev_get_drvdata(dev);
1283 int status = 0;
1284 int state;
1285 int ret;
1286
1287 ret = kstrtouint(buf, 10, &state);
1288
1289 if (ret)
1290 return ret;
1291
1292 if (state == ASUS_FAN_CTRL_MANUAL)
1293 asus->asus_hwmon_fan_manual_mode = true;
1294 else
1295 status = asus_hwmon_fan_set_auto(asus);
1296
1297 if (status)
1298 return status;
1299
1300 return count;
1301}
1302
1303static ssize_t fan1_label_show(struct device *dev,
1304 struct device_attribute *attr,
1305 char *buf)
1306{
1307 return sprintf(buf, "%s\n", ASUS_FAN_DESC);
1308}
1309
6118b8ad
CC		 1310static ssize_t asus_hwmon_temp1(struct device *dev,
1311 struct device_attribute *attr,
1312 char *buf)
1313{
1314 struct asus_wmi *asus = dev_get_drvdata(dev);
1315 u32 value;
1316 int err;
1317
1318 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
1319
1320 if (err < 0)
1321 return err;
1322
1323 value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
1324
1325 return sprintf(buf, "%d\n", value);
1326}
1327
53e755c2
KB		 1328/* Fan1 */
1329static DEVICE_ATTR_RW(pwm1);
1330static DEVICE_ATTR_RW(pwm1_enable);
1331static DEVICE_ATTR_RO(fan1_input);
1332static DEVICE_ATTR_RO(fan1_label);
1333
1334/* Temperature */
50a639fb 1335static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
e07babde
CC		 1336
1337static struct attribute *hwmon_attributes[] = {
50a639fb 1338 &dev_attr_pwm1.attr,
53e755c2
KB		 1339 &dev_attr_pwm1_enable.attr,
1340 &dev_attr_fan1_input.attr,
1341 &dev_attr_fan1_label.attr,
1342
50a639fb 1343 &dev_attr_temp1_input.attr,
e07babde
CC		 1344 NULL
1345};
1346
587a1f16 1347static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
e02431d6 1348 struct attribute *attr, int idx)
e07babde
CC		 1349{
1350 struct device *dev = container_of(kobj, struct device, kobj);
1351 struct platform_device *pdev = to_platform_device(dev->parent);
1352 struct asus_wmi *asus = platform_get_drvdata(pdev);
e07babde 1353 int dev_id = -1;
53e755c2 1354 int fan_attr = -1;
e07babde 1355 u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
53e755c2 1356 bool ok = true;
e07babde 1357
50a639fb 1358 if (attr == &dev_attr_pwm1.attr)
e07babde 1359 dev_id = ASUS_WMI_DEVID_FAN_CTRL;
50a639fb 1360 else if (attr == &dev_attr_temp1_input.attr)
e02431d6 1361 dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
e07babde 1362
53e755c2
KB		 1363
1364 if (attr == &dev_attr_fan1_input.attr
1365 || attr == &dev_attr_fan1_label.attr
1366 || attr == &dev_attr_pwm1.attr
1367 || attr == &dev_attr_pwm1_enable.attr) {
1368 fan_attr = 1;
1369 }
1370
e07babde
CC		 1371 if (dev_id != -1) {
1372 int err = asus_wmi_get_devstate(asus, dev_id, &value);
1373
53e755c2 1374 if (err < 0 && fan_attr == -1)
e772aed3 1375 return 0; /* can't return negative here */
e07babde
CC		 1376 }
1377
1378 if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
1379 /*
1380 * We need to find a better way, probably using sfun,
1381 * bits or spec ...
1382 * Currently we disable it if:
1383 * - ASUS_WMI_UNSUPPORTED_METHOD is returned
1384 * - reverved bits are non-zero
1385 * - sfun and presence bit are not set
1386 */
49979d09 1387 if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
e07babde
CC		 1388 || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
1389 ok = false;
53e755c2
KB		 1390 else
1391 ok = fan_attr <= asus->asus_hwmon_num_fans;
e02431d6
CC		 1392 } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
1393 /* If value is zero, something is clearly wrong */
53e755c2 1394 if (!value)
e02431d6 1395 ok = false;
53e755c2
KB		 1396 } else if (fan_attr <= asus->asus_hwmon_num_fans && fan_attr != -1) {
1397 ok = true;
1398 } else {
1399 ok = false;
e07babde
CC		 1400 }
1401
1402 return ok ? attr->mode : 0;
1403}
1404
1405static struct attribute_group hwmon_attribute_group = {
1406 .is_visible = asus_hwmon_sysfs_is_visible,
1407 .attrs = hwmon_attributes
1408};
50a639fb 1409__ATTRIBUTE_GROUPS(hwmon_attribute);
e07babde
CC		 1410
1411static int asus_wmi_hwmon_init(struct asus_wmi *asus)
1412{
1413 struct device *hwmon;
e07babde 1414
50a639fb
GR		 1415 hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
1416 "asus", asus,
1417 hwmon_attribute_groups);
e07babde
CC		 1418 if (IS_ERR(hwmon)) {
1419 pr_err("Could not register asus hwmon device\n");
1420 return PTR_ERR(hwmon);
1421 }
50a639fb 1422 return 0;
e07babde
CC		 1423}
1424
084fca63
CC		 1425/*
1426 * Backlight
1427 */
1d070f89 1428static int read_backlight_power(struct asus_wmi *asus)
b7187265 1429{
6e0044be
AK		 1430 int ret;
1431 if (asus->driver->quirks->store_backlight_power)
1432 ret = !asus->driver->panel_power;
1433 else
1434 ret = asus_wmi_get_devstate_simple(asus,
1435 ASUS_WMI_DEVID_BACKLIGHT);
b7187265
CC		 1436
1437 if (ret < 0)
1438 return ret;
1439
1440 return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
1441}
1442
8fbea019 1443static int read_brightness_max(struct asus_wmi *asus)
3d7b1655 1444{
dfed65d5 1445 u32 retval;
d33da3b6 1446 int err;
3d7b1655 1447
1d070f89 1448 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
3d7b1655 1449
8fbea019
CC		 1450 if (err < 0)
1451 return err;
1452
1453 retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
1454 retval >>= 8;
1455
1456 if (!retval)
1457 return -ENODEV;
1458
1459 return retval;
1460}
1461
1462static int read_brightness(struct backlight_device *bd)
1463{
1464 struct asus_wmi *asus = bl_get_data(bd);
0986f25f
DC		 1465 u32 retval;
1466 int err;
8fbea019
CC		 1467
1468 err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
1469
d33da3b6
CC		 1470 if (err < 0)
1471 return err;
1472
1473 return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
3d7b1655
YW		 1474}
1475
c87992d1 1476static u32 get_scalar_command(struct backlight_device *bd)
3d7b1655 1477{
1d070f89 1478 struct asus_wmi *asus = bl_get_data(bd);
c87992d1 1479 u32 ctrl_param = 0;
3d7b1655 1480
c87992d1
AK		 1481 if ((asus->driver->brightness < bd->props.brightness) ||
1482 bd->props.brightness == bd->props.max_brightness)
1483 ctrl_param = 0x00008001;
1484 else if ((asus->driver->brightness > bd->props.brightness) ||
1485 bd->props.brightness == 0)
1486 ctrl_param = 0x00008000;
3d7b1655 1487
c87992d1 1488 asus->driver->brightness = bd->props.brightness;
3d7b1655 1489
c87992d1
AK		 1490 return ctrl_param;
1491}
1492
3d7b1655
YW		 1493static int update_bl_status(struct backlight_device *bd)
1494{
1d070f89 1495 struct asus_wmi *asus = bl_get_data(bd);
dfed65d5 1496 u32 ctrl_param;
6e0044be 1497 int power, err = 0;
b7187265 1498
1d070f89 1499 power = read_backlight_power(asus);
b7187265
CC		 1500 if (power != -ENODEV && bd->props.power != power) {
1501 ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
d33da3b6
CC		 1502 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
1503 ctrl_param, NULL);
6e0044be
AK		 1504 if (asus->driver->quirks->store_backlight_power)
1505 asus->driver->panel_power = bd->props.power;
6e0044be 1506
ade28abd
CC		 1507 /* When using scalar brightness, updating the brightness
1508 * will mess with the backlight power */
1509 if (asus->driver->quirks->scalar_panel_brightness)
1510 return err;
b7187265 1511 }
ade28abd
CC		 1512
1513 if (asus->driver->quirks->scalar_panel_brightness)
1514 ctrl_param = get_scalar_command(bd);
1515 else
1516 ctrl_param = bd->props.brightness;
1517
1518 err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
1519 ctrl_param, NULL);
1520
8fbea019 1521 return err;
3d7b1655
YW		 1522}
1523
e12e6d94 1524static const struct backlight_ops asus_wmi_bl_ops = {
3d7b1655
YW		 1525 .get_brightness = read_brightness,
1526 .update_status = update_bl_status,
1527};
1528
e12e6d94 1529static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
3d7b1655 1530{
e12e6d94 1531 struct backlight_device *bd = asus->backlight_device;
3d7b1655 1532 int old = bd->props.brightness;
b7670ed6 1533 int new = old;
3d7b1655
YW		 1534
1535 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
1536 new = code - NOTIFY_BRNUP_MIN + 1;
1537 else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
1538 new = code - NOTIFY_BRNDOWN_MIN;
1539
1540 bd->props.brightness = new;
1541 backlight_update_status(bd);
1542 backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
1543
1544 return old;
1545}
1546
e12e6d94 1547static int asus_wmi_backlight_init(struct asus_wmi *asus)
3d7b1655
YW		 1548{
1549 struct backlight_device *bd;
1550 struct backlight_properties props;
b7187265
CC		 1551 int max;
1552 int power;
1553
8fbea019 1554 max = read_brightness_max(asus);
86ac2735 1555 if (max < 0)
8fbea019
CC		 1556 return max;
1557
1558 power = read_backlight_power(asus);
1559
b7187265
CC		 1560 if (power == -ENODEV)
1561 power = FB_BLANK_UNBLANK;
8fbea019
CC		 1562 else if (power < 0)
1563 return power;
3d7b1655
YW		 1564
1565 memset(&props, 0, sizeof(struct backlight_properties));
60cfa098 1566 props.type = BACKLIGHT_PLATFORM;
b7187265 1567 props.max_brightness = max;
e12e6d94
CC		 1568 bd = backlight_device_register(asus->driver->name,
1569 &asus->platform_device->dev, asus,
1570 &asus_wmi_bl_ops, &props);
3d7b1655
YW		 1571 if (IS_ERR(bd)) {
1572 pr_err("Could not register backlight device\n");
1573 return PTR_ERR(bd);
1574 }
1575
e12e6d94 1576 asus->backlight_device = bd;
3d7b1655 1577
6e0044be
AK		 1578 if (asus->driver->quirks->store_backlight_power)
1579 asus->driver->panel_power = power;
1580
3d7b1655 1581 bd->props.brightness = read_brightness(bd);
b7187265 1582 bd->props.power = power;
3d7b1655
YW		 1583 backlight_update_status(bd);
1584
c87992d1
AK		 1585 asus->driver->brightness = bd->props.brightness;
1586
3d7b1655
YW		 1587 return 0;
1588}
1589
e12e6d94 1590static void asus_wmi_backlight_exit(struct asus_wmi *asus)
3d7b1655 1591{
00981810 1592 backlight_device_unregister(asus->backlight_device);
3d7b1655 1593
e12e6d94 1594 asus->backlight_device = NULL;
3d7b1655
YW		 1595}
1596
a2a96f0c
AK		 1597static int is_display_toggle(int code)
1598{
1599 /* display toggle keys */
1600 if ((code >= 0x61 && code <= 0x67) ||
1601 (code >= 0x8c && code <= 0x93) ||
1602 (code >= 0xa0 && code <= 0xa7) ||
1603 (code >= 0xd0 && code <= 0xd5))
1604 return 1;
1605
1606 return 0;
1607}
1608
e12e6d94 1609static void asus_wmi_notify(u32 value, void *context)
3d7b1655 1610{
e12e6d94 1611 struct asus_wmi *asus = context;
3d7b1655
YW		 1612 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1613 union acpi_object *obj;
1614 acpi_status status;
1615 int code;
1616 int orig_code;
c4453f6a
SF		 1617 unsigned int key_value = 1;
1618 bool autorelease = 1;
3d7b1655
YW		 1619
1620 status = wmi_get_event_data(value, &response);
1621 if (status != AE_OK) {
1622 pr_err("bad event status 0x%x\n", status);
1623 return;
1624 }
1625
1626 obj = (union acpi_object *)response.pointer;
1627
57ab7dae
CC		 1628 if (!obj || obj->type != ACPI_TYPE_INTEGER)
1629 goto exit;
3d7b1655 1630
57ab7dae
CC		 1631 code = obj->integer.value;
1632 orig_code = code;
3d7b1655 1633
c4453f6a
SF		 1634 if (asus->driver->key_filter) {
1635 asus->driver->key_filter(asus->driver, &code, &key_value,
1636 &autorelease);
1637 if (code == ASUS_WMI_KEY_IGNORE)
1638 goto exit;
1639 }
1640
57ab7dae 1641 if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
3ba0302b 1642 code = ASUS_WMI_BRN_UP;
57ab7dae
CC		 1643 else if (code >= NOTIFY_BRNDOWN_MIN &&
1644 code <= NOTIFY_BRNDOWN_MAX)
3ba0302b 1645 code = ASUS_WMI_BRN_DOWN;
3d7b1655 1646
3ba0302b 1647 if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
62c4aa1a 1648 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
57ab7dae 1649 asus_wmi_backlight_notify(asus, orig_code);
3ba0302b 1650 goto exit;
a2a96f0c 1651 }
a2a96f0c
AK		 1652 }
1653
1654 if (is_display_toggle(code) &&
1655 asus->driver->quirks->no_display_toggle)
1656 goto exit;
1657
1658 if (!sparse_keymap_report_event(asus->inputdev, code,
1659 key_value, autorelease))
57ab7dae 1660 pr_info("Unknown key %x pressed\n", code);
3d7b1655 1661
57ab7dae 1662exit:
3d7b1655
YW		 1663 kfree(obj);
1664}
1665
9e1565bc
CC		 1666/*
1667 * Sys helpers
1668 */
1669static int parse_arg(const char *buf, unsigned long count, int *val)
1670{
1671 if (!count)
1672 return 0;
1673 if (sscanf(buf, "%i", val) != 1)
1674 return -EINVAL;
1675 return count;
1676}
1677
1d070f89
CC		 1678static ssize_t store_sys_wmi(struct asus_wmi *asus, int devid,
1679 const char *buf, size_t count)
9e1565bc 1680{
9e1565bc 1681 u32 retval;
d33da3b6 1682 int rv, err, value;
9e1565bc 1683
1d070f89 1684 value = asus_wmi_get_devstate_simple(asus, devid);
e12e6d94 1685 if (value == -ENODEV) /* Check device presence */
9e1565bc
CC		 1686 return value;
1687
1688 rv = parse_arg(buf, count, &value);
d33da3b6
CC		 1689 err = asus_wmi_set_devstate(devid, value, &retval);
1690
1691 if (err < 0)
1692 return err;
9e1565bc 1693
9e1565bc
CC		 1694 return rv;
1695}
1696
1d070f89 1697static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
9e1565bc 1698{
1d070f89 1699 int value = asus_wmi_get_devstate_simple(asus, devid);
9e1565bc
CC		 1700
1701 if (value < 0)
1702 return value;
1703
1704 return sprintf(buf, "%d\n", value);
1705}
1706
e12e6d94 1707#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
9e1565bc
CC		 1708 static ssize_t show_##_name(struct device *dev, \
1709 struct device_attribute *attr, \
1710 char *buf) \
1711 { \
1d070f89
CC		 1712 struct asus_wmi *asus = dev_get_drvdata(dev); \
1713 \
1714 return show_sys_wmi(asus, _cm, buf); \
9e1565bc
CC		 1715 } \
1716 static ssize_t store_##_name(struct device *dev, \
1717 struct device_attribute *attr, \
1718 const char *buf, size_t count) \
1719 { \
1d070f89
CC		 1720 struct asus_wmi *asus = dev_get_drvdata(dev); \
1721 \
1722 return store_sys_wmi(asus, _cm, buf, count); \
9e1565bc
CC		 1723 } \
1724 static struct device_attribute dev_attr_##_name = { \
1725 .attr = { \
1726 .name = __stringify(_name), \
1727 .mode = _mode }, \
1728 .show = show_##_name, \
1729 .store = store_##_name, \
1730 }
1731
e12e6d94
CC		 1732ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
1733ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
1734ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
c0b91b6d 1735ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
9e1565bc 1736
67fa38ec
DT		 1737static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
1738 const char *buf, size_t count)
7f80d734 1739{
3df5fdad 1740 int value, rv;
7f80d734
CB		 1741
1742 if (!count || sscanf(buf, "%i", &value) != 1)
1743 return -EINVAL;
1744 if (value < 0 || value > 2)
1745 return -EINVAL;
1746
3df5fdad
CC		 1747 rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
1748 if (rv < 0)
1749 return rv;
1750
1751 return count;
7f80d734
CB		 1752}
1753
1754static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
1755
4e37b42d
CC		 1756static struct attribute *platform_attributes[] = {
1757 &dev_attr_cpufv.attr,
9e1565bc
CC		 1758 &dev_attr_camera.attr,
1759 &dev_attr_cardr.attr,
4615bb66 1760 &dev_attr_touchpad.attr,
c0b91b6d 1761 &dev_attr_lid_resume.attr,
4e37b42d
CC		 1762 NULL
1763};
1764
587a1f16 1765static umode_t asus_sysfs_is_visible(struct kobject *kobj,
e12e6d94 1766 struct attribute *attr, int idx)
9e1565bc 1767{
1d070f89
CC		 1768 struct device *dev = container_of(kobj, struct device, kobj);
1769 struct platform_device *pdev = to_platform_device(dev);
1770 struct asus_wmi *asus = platform_get_drvdata(pdev);
1771 bool ok = true;
9e1565bc
CC		 1772 int devid = -1;
1773
1774 if (attr == &dev_attr_camera.attr)
e12e6d94 1775 devid = ASUS_WMI_DEVID_CAMERA;
9e1565bc 1776 else if (attr == &dev_attr_cardr.attr)
e12e6d94 1777 devid = ASUS_WMI_DEVID_CARDREADER;
4615bb66 1778 else if (attr == &dev_attr_touchpad.attr)
e12e6d94 1779 devid = ASUS_WMI_DEVID_TOUCHPAD;
c0b91b6d
AK		 1780 else if (attr == &dev_attr_lid_resume.attr)
1781 devid = ASUS_WMI_DEVID_LID_RESUME;
9e1565bc
CC		 1782
1783 if (devid != -1)
1d070f89 1784 ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
9e1565bc 1785
1d070f89 1786 return ok ? attr->mode : 0;
9e1565bc
CC		 1787}
1788
4e37b42d 1789static struct attribute_group platform_attribute_group = {
e12e6d94
CC		 1790 .is_visible = asus_sysfs_is_visible,
1791 .attrs = platform_attributes
4e37b42d
CC		 1792};
1793
e12e6d94 1794static void asus_wmi_sysfs_exit(struct platform_device *device)
7f80d734 1795{
4e37b42d 1796 sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
7f80d734
CB		 1797}
1798
e12e6d94 1799static int asus_wmi_sysfs_init(struct platform_device *device)
7f80d734 1800{
4e37b42d 1801 return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
7f80d734
CB		 1802}
1803
27c136c8
CC		 1804/*
1805 * Platform device
1806 */
39ddf3bf 1807static int asus_wmi_platform_init(struct asus_wmi *asus)
ee027e4a 1808{
46dbca87
CC		 1809 int rv;
1810
1811 /* INIT enable hotkeys on some models */
1812 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
0ed60654 1813 pr_info("Initialization: %#x\n", rv);
46dbca87
CC		 1814
1815 /* We don't know yet what to do with this version... */
1816 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
0ed60654 1817 pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
46dbca87
CC		 1818 asus->spec = rv;
1819 }
1820
1821 /*
1822 * The SFUN method probably allows the original driver to get the list
1823 * of features supported by a given model. For now, 0x0100 or 0x0800
1824 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
1825 * The significance of others is yet to be found.
1826 */
1827 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
0ed60654 1828 pr_info("SFUN value: %#x\n", rv);
46dbca87
CC		 1829 asus->sfun = rv;
1830 }
1831
1d070f89
CC		 1832 /*
1833 * Eee PC and Notebooks seems to have different method_id for DSTS,
1834 * but it may also be related to the BIOS's SPEC.
1835 * Note, on most Eeepc, there is no way to check if a method exist
1836 * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
1837 * but once again, SPEC may probably be used for that kind of things.
1838 */
1839 if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
1840 asus->dsts_id = ASUS_WMI_METHODID_DSTS;
63a78bb1 1841 else
1d070f89
CC		 1842 asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
1843
fddbfed5
CC		 1844 /* CWAP allow to define the behavior of the Fn+F2 key,
1845 * this method doesn't seems to be present on Eee PCs */
6a2bcccd 1846 if (asus->driver->quirks->wapf >= 0)
fddbfed5 1847 asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
6a2bcccd 1848 asus->driver->quirks->wapf, NULL);
fddbfed5 1849
e12e6d94 1850 return asus_wmi_sysfs_init(asus->platform_device);
27c136c8
CC		 1851}
1852
e12e6d94 1853static void asus_wmi_platform_exit(struct asus_wmi *asus)
27c136c8 1854{
e12e6d94 1855 asus_wmi_sysfs_exit(asus->platform_device);
27c136c8
CC		 1856}
1857
8c1b2d83
CC		 1858/*
1859 * debugfs
1860 */
e12e6d94
CC		 1861struct asus_wmi_debugfs_node {
1862 struct asus_wmi *asus;
8c1b2d83 1863 char *name;
e12e6d94 1864 int (*show) (struct seq_file *m, void *data);
8c1b2d83
CC		 1865};
1866
1867static int show_dsts(struct seq_file *m, void *data)
1868{
e12e6d94 1869 struct asus_wmi *asus = m->private;
d33da3b6 1870 int err;
8c1b2d83
CC		 1871 u32 retval = -1;
1872
1d070f89 1873 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
8c1b2d83 1874
d33da3b6
CC		 1875 if (err < 0)
1876 return err;
8c1b2d83 1877
ef343491 1878 seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
8c1b2d83
CC		 1879
1880 return 0;
1881}
1882
1883static int show_devs(struct seq_file *m, void *data)
1884{
e12e6d94 1885 struct asus_wmi *asus = m->private;
d33da3b6 1886 int err;
8c1b2d83
CC		 1887 u32 retval = -1;
1888
d33da3b6
CC		 1889 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
1890 &retval);
1891
1892 if (err < 0)
1893 return err;
8c1b2d83 1894
ef343491 1895 seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
e12e6d94 1896 asus->debug.ctrl_param, retval);
8c1b2d83
CC		 1897
1898 return 0;
1899}
1900
ef343491
CC		 1901static int show_call(struct seq_file *m, void *data)
1902{
1903 struct asus_wmi *asus = m->private;
1904 struct bios_args args = {
1905 .arg0 = asus->debug.dev_id,
1906 .arg1 = asus->debug.ctrl_param,
1907 };
1908 struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
1909 struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1910 union acpi_object *obj;
1911 acpi_status status;
1912
1913 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
1914 1, asus->debug.method_id,
1915 &input, &output);
1916
1917 if (ACPI_FAILURE(status))
1918 return -EIO;
1919
1920 obj = (union acpi_object *)output.pointer;
1921 if (obj && obj->type == ACPI_TYPE_INTEGER)
1922 seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
1923 asus->debug.dev_id, asus->debug.ctrl_param,
1924 (u32) obj->integer.value);
1925 else
1926 seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
1927 asus->debug.dev_id, asus->debug.ctrl_param,
a1d60867 1928 obj ? obj->type : -1);
ef343491
CC		 1929
1930 kfree(obj);
1931
1932 return 0;
1933}
1934
e12e6d94
CC		 1935static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
1936 {NULL, "devs", show_devs},
1937 {NULL, "dsts", show_dsts},
ef343491 1938 {NULL, "call", show_call},
8c1b2d83
CC		 1939};
1940
e12e6d94 1941static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
8c1b2d83 1942{
e12e6d94 1943 struct asus_wmi_debugfs_node *node = inode->i_private;
8c1b2d83 1944
e12e6d94 1945 return single_open(file, node->show, node->asus);
8c1b2d83
CC		 1946}
1947
e12e6d94 1948static const struct file_operations asus_wmi_debugfs_io_ops = {
8c1b2d83 1949 .owner = THIS_MODULE,
e12e6d94 1950 .open = asus_wmi_debugfs_open,
8c1b2d83
CC		 1951 .read = seq_read,
1952 .llseek = seq_lseek,
1953 .release = single_release,
1954};
1955
e12e6d94 1956static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
8c1b2d83 1957{
e12e6d94 1958 debugfs_remove_recursive(asus->debug.root);
8c1b2d83
CC		 1959}
1960
e12e6d94 1961static int asus_wmi_debugfs_init(struct asus_wmi *asus)
8c1b2d83
CC		 1962{
1963 struct dentry *dent;
1964 int i;
1965
e12e6d94
CC		 1966 asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
1967 if (!asus->debug.root) {
0ed60654 1968 pr_err("failed to create debugfs directory\n");
8c1b2d83
CC		 1969 goto error_debugfs;
1970 }
1971
ef343491
CC		 1972 dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
1973 asus->debug.root, &asus->debug.method_id);
1974 if (!dent)
1975 goto error_debugfs;
1976
e12e6d94
CC		 1977 dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
1978 asus->debug.root, &asus->debug.dev_id);
8c1b2d83
CC		 1979 if (!dent)
1980 goto error_debugfs;
1981
e12e6d94
CC		 1982 dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
1983 asus->debug.root, &asus->debug.ctrl_param);
8c1b2d83
CC		 1984 if (!dent)
1985 goto error_debugfs;
1986
e12e6d94
CC		 1987 for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
1988 struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
8c1b2d83 1989
e12e6d94 1990 node->asus = asus;
8c1b2d83 1991 dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
e12e6d94
CC		 1992 asus->debug.root, node,
1993 &asus_wmi_debugfs_io_ops);
8c1b2d83
CC		 1994 if (!dent) {
1995 pr_err("failed to create debug file: %s\n", node->name);
1996 goto error_debugfs;
1997 }
1998 }
1999
2000 return 0;
2001
2002error_debugfs:
e12e6d94 2003 asus_wmi_debugfs_exit(asus);
8c1b2d83
CC		 2004 return -ENOMEM;
2005}
2006
53e755c2
KB		 2007static int asus_wmi_fan_init(struct asus_wmi *asus)
2008{
2009 int status;
2010
2011 asus->asus_hwmon_pwm = -1;
2012 asus->asus_hwmon_num_fans = -1;
2013 asus->asus_hwmon_fan_manual_mode = false;
2014
2015 status = asus_hwmon_get_fan_number(asus, &asus->asus_hwmon_num_fans);
2016 if (status) {
2017 asus->asus_hwmon_num_fans = 0;
2018 pr_warn("Could not determine number of fans: %d\n", status);
2019 return -ENXIO;
2020 }
2021
2022 pr_info("Number of fans: %d\n", asus->asus_hwmon_num_fans);
2023 return 0;
2024}
2025
27c136c8
CC		 2026/*
2027 * WMI Driver
2028 */
e12e6d94 2029static int asus_wmi_add(struct platform_device *pdev)
afa7c886 2030{
e12e6d94
CC		 2031 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2032 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2033 struct asus_wmi *asus;
d8c66f62 2034 const char *chassis_type;
ee027e4a 2035 acpi_status status;
27c136c8 2036 int err;
a50bd128 2037 u32 result;
ee027e4a 2038
e12e6d94
CC		 2039 asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
2040 if (!asus)
a04ce290
CC		 2041 return -ENOMEM;
2042
e12e6d94
CC		 2043 asus->driver = wdrv;
2044 asus->platform_device = pdev;
2045 wdrv->platform_device = pdev;
2046 platform_set_drvdata(asus->platform_device, asus);
27c136c8 2047
c87992d1
AK		 2048 if (wdrv->detect_quirks)
2049 wdrv->detect_quirks(asus->driver);
afa7c886 2050
e12e6d94 2051 err = asus_wmi_platform_init(asus);
27c136c8
CC		 2052 if (err)
2053 goto fail_platform;
45f2c693 2054
e12e6d94 2055 err = asus_wmi_input_init(asus);
45f2c693 2056 if (err)
27c136c8 2057 goto fail_input;
3d7b1655 2058
53e755c2
KB		 2059 err = asus_wmi_fan_init(asus); /* probably no problems on error */
2060 asus_hwmon_fan_set_auto(asus);
2061
e07babde
CC		 2062 err = asus_wmi_hwmon_init(asus);
2063 if (err)
2064 goto fail_hwmon;
2065
e12e6d94 2066 err = asus_wmi_led_init(asus);
084fca63
CC		 2067 if (err)
2068 goto fail_leds;
2069
e12e6d94 2070 err = asus_wmi_rfkill_init(asus);
ba48fdb9
CC		 2071 if (err)
2072 goto fail_rfkill;
2073
d8c66f62
HG		 2074 /* Some Asus desktop boards export an acpi-video backlight interface,
2075 stop this from showing up */
2076 chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
2077 if (chassis_type && !strcmp(chassis_type, "3"))
62c4aa1a
HG		 2078 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2079
272c77d5 2080 if (asus->driver->quirks->wmi_backlight_power)
62c4aa1a
HG		 2081 acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2082
2083 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
e12e6d94 2084 err = asus_wmi_backlight_init(asus);
b7187265 2085 if (err && err != -ENODEV)
27c136c8 2086 goto fail_backlight;
62c4aa1a 2087 }
45f2c693 2088
e12e6d94
CC		 2089 status = wmi_install_notify_handler(asus->driver->event_guid,
2090 asus_wmi_notify, asus);
45f2c693 2091 if (ACPI_FAILURE(status)) {
e12e6d94 2092 pr_err("Unable to register notify handler - %d\n", status);
45f2c693 2093 err = -ENODEV;
27c136c8 2094 goto fail_wmi_handler;
45f2c693
YW		 2095 }
2096
e12e6d94 2097 err = asus_wmi_debugfs_init(asus);
8c1b2d83
CC		 2098 if (err)
2099 goto fail_debugfs;
2100
a50bd128
AK		 2101 asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
2102 if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
2103 asus->driver->wlan_ctrl_by_user = 1;
2104
a04ce290 2105 return 0;
45f2c693 2106
8c1b2d83 2107fail_debugfs:
e12e6d94 2108 wmi_remove_notify_handler(asus->driver->event_guid);
27c136c8 2109fail_wmi_handler:
e12e6d94 2110 asus_wmi_backlight_exit(asus);
27c136c8 2111fail_backlight:
e12e6d94 2112 asus_wmi_rfkill_exit(asus);
ba48fdb9 2113fail_rfkill:
e12e6d94 2114 asus_wmi_led_exit(asus);
084fca63 2115fail_leds:
e07babde 2116fail_hwmon:
e12e6d94 2117 asus_wmi_input_exit(asus);
27c136c8 2118fail_input:
e12e6d94 2119 asus_wmi_platform_exit(asus);
27c136c8 2120fail_platform:
e12e6d94 2121 kfree(asus);
a04ce290 2122 return err;
45f2c693
YW		 2123}
2124
e12e6d94 2125static int asus_wmi_remove(struct platform_device *device)
45f2c693 2126{
e12e6d94
CC		 2127 struct asus_wmi *asus;
2128
2129 asus = platform_get_drvdata(device);
2130 wmi_remove_notify_handler(asus->driver->event_guid);
2131 asus_wmi_backlight_exit(asus);
2132 asus_wmi_input_exit(asus);
2133 asus_wmi_led_exit(asus);
2134 asus_wmi_rfkill_exit(asus);
2135 asus_wmi_debugfs_exit(asus);
2136 asus_wmi_platform_exit(asus);
53e755c2 2137 asus_hwmon_fan_set_auto(asus);
e12e6d94
CC		 2138
2139 kfree(asus);
45f2c693
YW		 2140 return 0;
2141}
2142
0773d7f9
CC		 2143/*
2144 * Platform driver - hibernate/resume callbacks
2145 */
e12e6d94 2146static int asus_hotk_thaw(struct device *device)
0773d7f9 2147{
e12e6d94 2148 struct asus_wmi *asus = dev_get_drvdata(device);
0773d7f9 2149
a7ce3f04 2150 if (asus->wlan.rfkill) {
0773d7f9
CC		 2151 bool wlan;
2152
2153 /*
2154 * Work around bios bug - acpi _PTS turns off the wireless led
2155 * during suspend. Normally it restores it on resume, but
2156 * we should kick it ourselves in case hibernation is aborted.
2157 */
1d070f89 2158 wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
e12e6d94 2159 asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
0773d7f9
CC		 2160 }
2161
2162 return 0;
2163}
2164
30734049
OR		 2165static int asus_hotk_resume(struct device *device)
2166{
2167 struct asus_wmi *asus = dev_get_drvdata(device);
2168
2169 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2170 queue_work(asus->led_workqueue, &asus->kbd_led_work);
2171
2172 return 0;
2173}
2174
e12e6d94 2175static int asus_hotk_restore(struct device *device)
0773d7f9 2176{
e12e6d94 2177 struct asus_wmi *asus = dev_get_drvdata(device);
0773d7f9
CC		 2178 int bl;
2179
2180 /* Refresh both wlan rfkill state and pci hotplug */
a7ce3f04 2181 if (asus->wlan.rfkill)
e12e6d94 2182 asus_rfkill_hotplug(asus);
0773d7f9 2183
a7ce3f04 2184 if (asus->bluetooth.rfkill) {
1d070f89
CC		 2185 bl = !asus_wmi_get_devstate_simple(asus,
2186 ASUS_WMI_DEVID_BLUETOOTH);
a7ce3f04 2187 rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
2e9e159d 2188 }
a7ce3f04 2189 if (asus->wimax.rfkill) {
1d070f89 2190 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
a7ce3f04 2191 rfkill_set_sw_state(asus->wimax.rfkill, bl);
2e9e159d 2192 }
a7ce3f04 2193 if (asus->wwan3g.rfkill) {
1d070f89 2194 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
a7ce3f04 2195 rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
0773d7f9 2196 }
43be8bde
CC		 2197 if (asus->gps.rfkill) {
2198 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
2199 rfkill_set_sw_state(asus->gps.rfkill, bl);
2200 }
a912d329
CC		 2201 if (asus->uwb.rfkill) {
2202 bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
2203 rfkill_set_sw_state(asus->uwb.rfkill, bl);
2204 }
30734049
OR		 2205 if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
2206 queue_work(asus->led_workqueue, &asus->kbd_led_work);
0773d7f9
CC		 2207
2208 return 0;
2209}
2210
e12e6d94
CC		 2211static const struct dev_pm_ops asus_pm_ops = {
2212 .thaw = asus_hotk_thaw,
2213 .restore = asus_hotk_restore,
30734049 2214 .resume = asus_hotk_resume,
45f2c693
YW		 2215};
2216
e12e6d94 2217static int asus_wmi_probe(struct platform_device *pdev)
d358cb55 2218{
e12e6d94
CC		 2219 struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
2220 struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
2221 int ret;
d358cb55 2222
e12e6d94 2223 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
5ad77dcf 2224 pr_warn("Management GUID not found\n");
ee027e4a
YW		 2225 return -ENODEV;
2226 }
2227
e12e6d94 2228 if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
5ad77dcf 2229 pr_warn("Event GUID not found\n");
d358cb55
CC		 2230 return -ENODEV;
2231 }
2232
e12e6d94
CC		 2233 if (wdrv->probe) {
2234 ret = wdrv->probe(pdev);
2235 if (ret)
2236 return ret;
2237 }
2238
2239 return asus_wmi_add(pdev);
a04ce290 2240}
45f2c693 2241
e12e6d94 2242static bool used;
ee027e4a 2243
8fe8c25e 2244int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
a04ce290 2245{
e12e6d94
CC		 2246 struct platform_driver *platform_driver;
2247 struct platform_device *platform_device;
2248
2249 if (used)
2250 return -EBUSY;
2251
2252 platform_driver = &driver->platform_driver;
2253 platform_driver->remove = asus_wmi_remove;
2254 platform_driver->driver.owner = driver->owner;
2255 platform_driver->driver.name = driver->name;
2256 platform_driver->driver.pm = &asus_pm_ops;
2257
2258 platform_device = platform_create_bundle(platform_driver,
2259 asus_wmi_probe,
a04ce290
CC		 2260 NULL, 0, NULL, 0);
2261 if (IS_ERR(platform_device))
2262 return PTR_ERR(platform_device);
e12e6d94
CC		 2263
2264 used = true;
2265 return 0;
2266}
2267EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
2268
2269void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
2270{
2271 platform_device_unregister(driver->platform_device);
2272 platform_driver_unregister(&driver->platform_driver);
2273 used = false;
2274}
2275EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
2276
2277static int __init asus_wmi_init(void)
2278{
2279 if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
0ed60654 2280 pr_info("Asus Management GUID not found\n");
e12e6d94
CC		 2281 return -ENODEV;
2282 }
2283
0ed60654 2284 pr_info("ASUS WMI generic driver loaded\n");
ee027e4a
YW		 2285 return 0;
2286}
2287
e12e6d94 2288static void __exit asus_wmi_exit(void)
ee027e4a 2289{
0ed60654 2290 pr_info("ASUS WMI generic driver unloaded\n");
ee027e4a
YW		 2291}
2292
e12e6d94
CC		 2293module_init(asus_wmi_init);
2294module_exit(asus_wmi_exit);
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