1/*
   2 *  Acer WMI Laptop Extras
   3 *
   4 *  Copyright (C) 2007-2009	Carlos Corbacho <carlos@strangeworlds.co.uk>
   5 *
   6 *  Based on acer_acpi:
   7 *    Copyright (C) 2005-2007	E.M. Smith
   8 *    Copyright (C) 2007-2008	Carlos Corbacho <cathectic@gmail.com>
   9 *
  10 *  This program is free software; you can redistribute it and/or modify
  11 *  it under the terms of the GNU General Public License as published by
  12 *  the Free Software Foundation; either version 2 of the License, or
  13 *  (at your option) any later version.
  14 *
  15 *  This program is distributed in the hope that it will be useful,
  16 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *  GNU General Public License for more details.
  19 *
  20 *  You should have received a copy of the GNU General Public License
  21 *  along with this program; if not, write to the Free Software
  22 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23 */
  24
  25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26
  27#include <linux/kernel.h>
  28#include <linux/module.h>
  29#include <linux/init.h>
  30#include <linux/types.h>
  31#include <linux/dmi.h>
  32#include <linux/fb.h>
  33#include <linux/backlight.h>
  34#include <linux/leds.h>
  35#include <linux/platform_device.h>
  36#include <linux/acpi.h>
  37#include <linux/i8042.h>
  38#include <linux/rfkill.h>
  39#include <linux/workqueue.h>
  40#include <linux/debugfs.h>
  41#include <linux/slab.h>
  42#include <linux/input.h>
  43#include <linux/input/sparse-keymap.h>
  44
  45#include <acpi/acpi_drivers.h>
  46#include <acpi/video.h>
  47
  48MODULE_AUTHOR("Carlos Corbacho");
  49MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  50MODULE_LICENSE("GPL");
  51
  52/*
  53 * Magic Number
  54 * Meaning is unknown - this number is required for writing to ACPI for AMW0
  55 * (it's also used in acerhk when directly accessing the BIOS)
  56 */
  57#define ACER_AMW0_WRITE	0x9610
  58
  59/*
  60 * Bit masks for the AMW0 interface
  61 */
  62#define ACER_AMW0_WIRELESS_MASK  0x35
  63#define ACER_AMW0_BLUETOOTH_MASK 0x34
  64#define ACER_AMW0_MAILLED_MASK   0x31
  65
  66/*
  67 * Method IDs for WMID interface
  68 */
  69#define ACER_WMID_GET_WIRELESS_METHODID		1
  70#define ACER_WMID_GET_BLUETOOTH_METHODID	2
  71#define ACER_WMID_GET_BRIGHTNESS_METHODID	3
  72#define ACER_WMID_SET_WIRELESS_METHODID		4
  73#define ACER_WMID_SET_BLUETOOTH_METHODID	5
  74#define ACER_WMID_SET_BRIGHTNESS_METHODID	6
  75#define ACER_WMID_GET_THREEG_METHODID		10
  76#define ACER_WMID_SET_THREEG_METHODID		11
  77
  78/*
  79 * Acer ACPI method GUIDs
  80 */
  81#define AMW0_GUID1		"67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  82#define AMW0_GUID2		"431F16ED-0C2B-444C-B267-27DEB140CF9C"
  83#define WMID_GUID1		"6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  84#define WMID_GUID2		"95764E09-FB56-4E83-B31A-37761F60994A"
  85#define WMID_GUID3		"61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  86
  87/*
  88 * Acer ACPI event GUIDs
  89 */
  90#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  91
  92MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  93MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  94MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  95
  96enum acer_wmi_event_ids {
  97	WMID_HOTKEY_EVENT = 0x1,
 
  98};
  99
 100static const struct key_entry acer_wmi_keymap[] = {
 101	{KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
 102	{KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
 103	{KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
 104	{KE_KEY, 0x12, {KEY_BLUETOOTH} },	/* BT */
 105	{KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
 106	{KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
 107	{KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
 108	{KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
 109	{KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
 110	{KE_IGNORE, 0x41, {KEY_MUTE} },
 111	{KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
 112	{KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
 113	{KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 114	{KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 115	{KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 116	{KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 117	{KE_IGNORE, 0x45, {KEY_STOP} },
 118	{KE_IGNORE, 0x50, {KEY_STOP} },
 119	{KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 120	{KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 121	{KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 122	{KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 123	{KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 124	{KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 125	{KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} },	/* Display Switch */
 126	{KE_IGNORE, 0x81, {KEY_SLEEP} },
 127	{KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} },	/* Touch Pad On/Off */
 
 
 128	{KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 
 129	{KE_END, 0}
 130};
 131
 132static struct input_dev *acer_wmi_input_dev;
 
 133
 134struct event_return_value {
 135	u8 function;
 136	u8 key_num;
 137	u16 device_state;
 138	u32 reserved;
 139} __attribute__((packed));
 140
 141/*
 142 * GUID3 Get Device Status device flags
 143 */
 144#define ACER_WMID3_GDS_WIRELESS		(1<<0)	/* WiFi */
 145#define ACER_WMID3_GDS_THREEG		(1<<6)	/* 3G */
 146#define ACER_WMID3_GDS_WIMAX		(1<<7)	/* WiMAX */
 147#define ACER_WMID3_GDS_BLUETOOTH	(1<<11)	/* BT */
 
 148
 149struct lm_input_params {
 150	u8 function_num;        /* Function Number */
 151	u16 commun_devices;     /* Communication type devices default status */
 152	u16 devices;            /* Other type devices default status */
 153	u8 lm_status;           /* Launch Manager Status */
 154	u16 reserved;
 155} __attribute__((packed));
 156
 157struct lm_return_value {
 158	u8 error_code;          /* Error Code */
 159	u8 ec_return_value;     /* EC Return Value */
 160	u16 reserved;
 161} __attribute__((packed));
 162
 163struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 164	u8 function_num;        /* Function Number */
 165	u8 hotkey_number;       /* Hotkey Number */
 166	u16 devices;            /* Set Device */
 167	u8 volume_value;        /* Volume Value */
 168} __attribute__((packed));
 169
 170struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 171	u8 function_num;	/* Function Number */
 172	u8 hotkey_number;	/* Hotkey Number */
 173	u16 devices;		/* Get Device */
 174} __attribute__((packed));
 175
 176struct wmid3_gds_return_value {	/* Get Device Status return value*/
 177	u8 error_code;		/* Error Code */
 178	u8 ec_return_value;	/* EC Return Value */
 179	u16 devices;		/* Current Device Status */
 180	u32 reserved;
 181} __attribute__((packed));
 182
 183struct hotkey_function_type_aa {
 184	u8 type;
 185	u8 length;
 186	u16 handle;
 187	u16 commun_func_bitmap;
 188	u16 application_func_bitmap;
 189	u16 media_func_bitmap;
 190	u16 display_func_bitmap;
 191	u16 others_func_bitmap;
 192	u8 commun_fn_key_number;
 193} __attribute__((packed));
 194
 195/*
 196 * Interface capability flags
 197 */
 198#define ACER_CAP_MAILLED		(1<<0)
 199#define ACER_CAP_WIRELESS		(1<<1)
 200#define ACER_CAP_BLUETOOTH		(1<<2)
 201#define ACER_CAP_BRIGHTNESS		(1<<3)
 202#define ACER_CAP_THREEG			(1<<4)
 
 203#define ACER_CAP_ANY			(0xFFFFFFFF)
 204
 205/*
 206 * Interface type flags
 207 */
 208enum interface_flags {
 209	ACER_AMW0,
 210	ACER_AMW0_V2,
 211	ACER_WMID,
 212	ACER_WMID_v2,
 213};
 214
 215#define ACER_DEFAULT_WIRELESS  0
 216#define ACER_DEFAULT_BLUETOOTH 0
 217#define ACER_DEFAULT_MAILLED   0
 218#define ACER_DEFAULT_THREEG    0
 219
 220static int max_brightness = 0xF;
 221
 222static int mailled = -1;
 223static int brightness = -1;
 224static int threeg = -1;
 225static int force_series;
 226static bool ec_raw_mode;
 227static bool has_type_aa;
 228static u16 commun_func_bitmap;
 229static u8 commun_fn_key_number;
 230
 231module_param(mailled, int, 0444);
 232module_param(brightness, int, 0444);
 233module_param(threeg, int, 0444);
 234module_param(force_series, int, 0444);
 235module_param(ec_raw_mode, bool, 0444);
 236MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 237MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 238MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 239MODULE_PARM_DESC(force_series, "Force a different laptop series");
 240MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 241
 242struct acer_data {
 243	int mailled;
 244	int threeg;
 245	int brightness;
 246};
 247
 248struct acer_debug {
 249	struct dentry *root;
 250	struct dentry *devices;
 251	u32 wmid_devices;
 252};
 253
 254static struct rfkill *wireless_rfkill;
 255static struct rfkill *bluetooth_rfkill;
 256static struct rfkill *threeg_rfkill;
 257static bool rfkill_inited;
 258
 259/* Each low-level interface must define at least some of the following */
 260struct wmi_interface {
 261	/* The WMI device type */
 262	u32 type;
 263
 264	/* The capabilities this interface provides */
 265	u32 capability;
 266
 267	/* Private data for the current interface */
 268	struct acer_data data;
 269
 270	/* debugfs entries associated with this interface */
 271	struct acer_debug debug;
 272};
 273
 274/* The static interface pointer, points to the currently detected interface */
 275static struct wmi_interface *interface;
 276
 277/*
 278 * Embedded Controller quirks
 279 * Some laptops require us to directly access the EC to either enable or query
 280 * features that are not available through WMI.
 281 */
 282
 283struct quirk_entry {
 284	u8 wireless;
 285	u8 mailled;
 286	s8 brightness;
 287	u8 bluetooth;
 288};
 289
 290static struct quirk_entry *quirks;
 291
 292static void set_quirks(void)
 293{
 294	if (!interface)
 295		return;
 296
 297	if (quirks->mailled)
 298		interface->capability |= ACER_CAP_MAILLED;
 299
 300	if (quirks->brightness)
 301		interface->capability |= ACER_CAP_BRIGHTNESS;
 302}
 303
 304static int dmi_matched(const struct dmi_system_id *dmi)
 305{
 306	quirks = dmi->driver_data;
 307	return 1;
 308}
 309
 310static struct quirk_entry quirk_unknown = {
 311};
 312
 313static struct quirk_entry quirk_acer_aspire_1520 = {
 314	.brightness = -1,
 315};
 316
 317static struct quirk_entry quirk_acer_travelmate_2490 = {
 318	.mailled = 1,
 319};
 320
 321/* This AMW0 laptop has no bluetooth */
 322static struct quirk_entry quirk_medion_md_98300 = {
 323	.wireless = 1,
 324};
 325
 326static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 327	.wireless = 2,
 328};
 329
 330static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 331	.wireless = 3,
 332};
 333
 334/* The Aspire One has a dummy ACPI-WMI interface - disable it */
 335static struct dmi_system_id __devinitdata acer_blacklist[] = {
 336	{
 337		.ident = "Acer Aspire One (SSD)",
 338		.matches = {
 339			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 340			DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 341		},
 342	},
 343	{
 344		.ident = "Acer Aspire One (HDD)",
 345		.matches = {
 346			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 347			DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 348		},
 349	},
 350	{}
 351};
 352
 353static struct dmi_system_id acer_quirks[] = {
 354	{
 355		.callback = dmi_matched,
 356		.ident = "Acer Aspire 1360",
 357		.matches = {
 358			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 359			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 360		},
 361		.driver_data = &quirk_acer_aspire_1520,
 362	},
 363	{
 364		.callback = dmi_matched,
 365		.ident = "Acer Aspire 1520",
 366		.matches = {
 367			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 368			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 369		},
 370		.driver_data = &quirk_acer_aspire_1520,
 371	},
 372	{
 373		.callback = dmi_matched,
 374		.ident = "Acer Aspire 3100",
 375		.matches = {
 376			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 377			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 378		},
 379		.driver_data = &quirk_acer_travelmate_2490,
 380	},
 381	{
 382		.callback = dmi_matched,
 383		.ident = "Acer Aspire 3610",
 384		.matches = {
 385			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 386			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 387		},
 388		.driver_data = &quirk_acer_travelmate_2490,
 389	},
 390	{
 391		.callback = dmi_matched,
 392		.ident = "Acer Aspire 5100",
 393		.matches = {
 394			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 395			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 396		},
 397		.driver_data = &quirk_acer_travelmate_2490,
 398	},
 399	{
 400		.callback = dmi_matched,
 401		.ident = "Acer Aspire 5610",
 402		.matches = {
 403			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 404			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 405		},
 406		.driver_data = &quirk_acer_travelmate_2490,
 407	},
 408	{
 409		.callback = dmi_matched,
 410		.ident = "Acer Aspire 5630",
 411		.matches = {
 412			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 413			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 414		},
 415		.driver_data = &quirk_acer_travelmate_2490,
 416	},
 417	{
 418		.callback = dmi_matched,
 419		.ident = "Acer Aspire 5650",
 420		.matches = {
 421			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 422			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 423		},
 424		.driver_data = &quirk_acer_travelmate_2490,
 425	},
 426	{
 427		.callback = dmi_matched,
 428		.ident = "Acer Aspire 5680",
 429		.matches = {
 430			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 431			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 432		},
 433		.driver_data = &quirk_acer_travelmate_2490,
 434	},
 435	{
 436		.callback = dmi_matched,
 437		.ident = "Acer Aspire 9110",
 438		.matches = {
 439			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 440			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 441		},
 442		.driver_data = &quirk_acer_travelmate_2490,
 443	},
 444	{
 445		.callback = dmi_matched,
 446		.ident = "Acer TravelMate 2490",
 447		.matches = {
 448			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 449			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 450		},
 451		.driver_data = &quirk_acer_travelmate_2490,
 452	},
 453	{
 454		.callback = dmi_matched,
 455		.ident = "Acer TravelMate 4200",
 456		.matches = {
 457			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 458			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 459		},
 460		.driver_data = &quirk_acer_travelmate_2490,
 461	},
 462	{
 463		.callback = dmi_matched,
 464		.ident = "Fujitsu Siemens Amilo Li 1718",
 465		.matches = {
 466			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 467			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 468		},
 469		.driver_data = &quirk_fujitsu_amilo_li_1718,
 470	},
 471	{
 472		.callback = dmi_matched,
 473		.ident = "Medion MD 98300",
 474		.matches = {
 475			DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 476			DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 477		},
 478		.driver_data = &quirk_medion_md_98300,
 479	},
 480	{
 481		.callback = dmi_matched,
 482		.ident = "Lenovo Ideapad S205",
 483		.matches = {
 484			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 485			DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 486		},
 487		.driver_data = &quirk_lenovo_ideapad_s205,
 488	},
 489	{
 490		.callback = dmi_matched,
 491		.ident = "Lenovo Ideapad S205 (Brazos)",
 492		.matches = {
 493			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 494			DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 495		},
 496		.driver_data = &quirk_lenovo_ideapad_s205,
 497	},
 498	{
 499		.callback = dmi_matched,
 500		.ident = "Lenovo 3000 N200",
 501		.matches = {
 502			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 503			DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 504		},
 505		.driver_data = &quirk_fujitsu_amilo_li_1718,
 506	},
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 507	{}
 508};
 509
 510static int video_set_backlight_video_vendor(const struct dmi_system_id *d)
 511{
 512	interface->capability &= ~ACER_CAP_BRIGHTNESS;
 513	pr_info("Brightness must be controlled by generic video driver\n");
 514	return 0;
 515}
 516
 517static const struct dmi_system_id video_vendor_dmi_table[] = {
 518	{
 519		.callback = video_set_backlight_video_vendor,
 520		.ident = "Acer TravelMate 4750",
 521		.matches = {
 522			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 523			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 524		},
 525	},
 526	{
 527		.callback = video_set_backlight_video_vendor,
 528		.ident = "Acer Extensa 5235",
 529		.matches = {
 530			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 531			DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 532		},
 533	},
 534	{
 535		.callback = video_set_backlight_video_vendor,
 536		.ident = "Acer TravelMate 5760",
 537		.matches = {
 538			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 539			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 540		},
 541	},
 542	{
 543		.callback = video_set_backlight_video_vendor,
 544		.ident = "Acer Aspire 5750",
 545		.matches = {
 546			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 547			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 548		},
 549	},
 550	{}
 551};
 552
 553/* Find which quirks are needed for a particular vendor/ model pair */
 554static void find_quirks(void)
 555{
 556	if (!force_series) {
 557		dmi_check_system(acer_quirks);
 558	} else if (force_series == 2490) {
 559		quirks = &quirk_acer_travelmate_2490;
 560	}
 561
 562	if (quirks == NULL)
 563		quirks = &quirk_unknown;
 564
 565	set_quirks();
 566}
 567
 568/*
 569 * General interface convenience methods
 570 */
 571
 572static bool has_cap(u32 cap)
 573{
 574	if ((interface->capability & cap) != 0)
 575		return 1;
 576
 577	return 0;
 578}
 579
 580/*
 581 * AMW0 (V1) interface
 582 */
 583struct wmab_args {
 584	u32 eax;
 585	u32 ebx;
 586	u32 ecx;
 587	u32 edx;
 588};
 589
 590struct wmab_ret {
 591	u32 eax;
 592	u32 ebx;
 593	u32 ecx;
 594	u32 edx;
 595	u32 eex;
 596};
 597
 598static acpi_status wmab_execute(struct wmab_args *regbuf,
 599struct acpi_buffer *result)
 600{
 601	struct acpi_buffer input;
 602	acpi_status status;
 603	input.length = sizeof(struct wmab_args);
 604	input.pointer = (u8 *)regbuf;
 605
 606	status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
 607
 608	return status;
 609}
 610
 611static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 612{
 613	int err;
 614	u8 result;
 615
 616	switch (cap) {
 617	case ACER_CAP_MAILLED:
 618		switch (quirks->mailled) {
 619		default:
 620			err = ec_read(0xA, &result);
 621			if (err)
 622				return AE_ERROR;
 623			*value = (result >> 7) & 0x1;
 624			return AE_OK;
 625		}
 626		break;
 627	case ACER_CAP_WIRELESS:
 628		switch (quirks->wireless) {
 629		case 1:
 630			err = ec_read(0x7B, &result);
 631			if (err)
 632				return AE_ERROR;
 633			*value = result & 0x1;
 634			return AE_OK;
 635		case 2:
 636			err = ec_read(0x71, &result);
 637			if (err)
 638				return AE_ERROR;
 639			*value = result & 0x1;
 640			return AE_OK;
 641		case 3:
 642			err = ec_read(0x78, &result);
 643			if (err)
 644				return AE_ERROR;
 645			*value = result & 0x1;
 646			return AE_OK;
 647		default:
 648			err = ec_read(0xA, &result);
 649			if (err)
 650				return AE_ERROR;
 651			*value = (result >> 2) & 0x1;
 652			return AE_OK;
 653		}
 654		break;
 655	case ACER_CAP_BLUETOOTH:
 656		switch (quirks->bluetooth) {
 657		default:
 658			err = ec_read(0xA, &result);
 659			if (err)
 660				return AE_ERROR;
 661			*value = (result >> 4) & 0x1;
 662			return AE_OK;
 663		}
 664		break;
 665	case ACER_CAP_BRIGHTNESS:
 666		switch (quirks->brightness) {
 667		default:
 668			err = ec_read(0x83, &result);
 669			if (err)
 670				return AE_ERROR;
 671			*value = result;
 672			return AE_OK;
 673		}
 674		break;
 675	default:
 676		return AE_ERROR;
 677	}
 678	return AE_OK;
 679}
 680
 681static acpi_status AMW0_set_u32(u32 value, u32 cap)
 682{
 683	struct wmab_args args;
 684
 685	args.eax = ACER_AMW0_WRITE;
 686	args.ebx = value ? (1<<8) : 0;
 687	args.ecx = args.edx = 0;
 688
 689	switch (cap) {
 690	case ACER_CAP_MAILLED:
 691		if (value > 1)
 692			return AE_BAD_PARAMETER;
 693		args.ebx |= ACER_AMW0_MAILLED_MASK;
 694		break;
 695	case ACER_CAP_WIRELESS:
 696		if (value > 1)
 697			return AE_BAD_PARAMETER;
 698		args.ebx |= ACER_AMW0_WIRELESS_MASK;
 699		break;
 700	case ACER_CAP_BLUETOOTH:
 701		if (value > 1)
 702			return AE_BAD_PARAMETER;
 703		args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 704		break;
 705	case ACER_CAP_BRIGHTNESS:
 706		if (value > max_brightness)
 707			return AE_BAD_PARAMETER;
 708		switch (quirks->brightness) {
 709		default:
 710			return ec_write(0x83, value);
 711			break;
 712		}
 713	default:
 714		return AE_ERROR;
 715	}
 716
 717	/* Actually do the set */
 718	return wmab_execute(&args, NULL);
 719}
 720
 721static acpi_status AMW0_find_mailled(void)
 722{
 723	struct wmab_args args;
 724	struct wmab_ret ret;
 725	acpi_status status = AE_OK;
 726	struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 727	union acpi_object *obj;
 728
 729	args.eax = 0x86;
 730	args.ebx = args.ecx = args.edx = 0;
 731
 732	status = wmab_execute(&args, &out);
 733	if (ACPI_FAILURE(status))
 734		return status;
 735
 736	obj = (union acpi_object *) out.pointer;
 737	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 738	obj->buffer.length == sizeof(struct wmab_ret)) {
 739		ret = *((struct wmab_ret *) obj->buffer.pointer);
 740	} else {
 741		kfree(out.pointer);
 742		return AE_ERROR;
 743	}
 744
 745	if (ret.eex & 0x1)
 746		interface->capability |= ACER_CAP_MAILLED;
 747
 748	kfree(out.pointer);
 749
 750	return AE_OK;
 751}
 752
 753static int AMW0_set_cap_acpi_check_device_found;
 754
 755static acpi_status AMW0_set_cap_acpi_check_device_cb(acpi_handle handle,
 756	u32 level, void *context, void **retval)
 757{
 758	AMW0_set_cap_acpi_check_device_found = 1;
 759	return AE_OK;
 760}
 761
 762static const struct acpi_device_id norfkill_ids[] = {
 763	{ "VPC2004", 0},
 764	{ "IBM0068", 0},
 765	{ "LEN0068", 0},
 766	{ "SNY5001", 0},	/* sony-laptop in charge */
 767	{ "", 0},
 768};
 769
 770static int AMW0_set_cap_acpi_check_device(void)
 771{
 772	const struct acpi_device_id *id;
 773
 774	for (id = norfkill_ids; id->id[0]; id++)
 775		acpi_get_devices(id->id, AMW0_set_cap_acpi_check_device_cb,
 776				NULL, NULL);
 777	return AMW0_set_cap_acpi_check_device_found;
 778}
 779
 780static acpi_status AMW0_set_capabilities(void)
 781{
 782	struct wmab_args args;
 783	struct wmab_ret ret;
 784	acpi_status status;
 785	struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 786	union acpi_object *obj;
 787
 788	/*
 789	 * On laptops with this strange GUID (non Acer), normal probing doesn't
 790	 * work.
 791	 */
 792	if (wmi_has_guid(AMW0_GUID2)) {
 793		if ((quirks != &quirk_unknown) ||
 794		    !AMW0_set_cap_acpi_check_device())
 795			interface->capability |= ACER_CAP_WIRELESS;
 796		return AE_OK;
 797	}
 798
 799	args.eax = ACER_AMW0_WRITE;
 800	args.ecx = args.edx = 0;
 801
 802	args.ebx = 0xa2 << 8;
 803	args.ebx |= ACER_AMW0_WIRELESS_MASK;
 804
 805	status = wmab_execute(&args, &out);
 806	if (ACPI_FAILURE(status))
 807		return status;
 808
 809	obj = out.pointer;
 810	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 811	obj->buffer.length == sizeof(struct wmab_ret)) {
 812		ret = *((struct wmab_ret *) obj->buffer.pointer);
 813	} else {
 814		status = AE_ERROR;
 815		goto out;
 816	}
 817
 818	if (ret.eax & 0x1)
 819		interface->capability |= ACER_CAP_WIRELESS;
 820
 821	args.ebx = 2 << 8;
 822	args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 823
 824	/*
 825	 * It's ok to use existing buffer for next wmab_execute call.
 826	 * But we need to kfree(out.pointer) if next wmab_execute fail.
 827	 */
 828	status = wmab_execute(&args, &out);
 829	if (ACPI_FAILURE(status))
 830		goto out;
 831
 832	obj = (union acpi_object *) out.pointer;
 833	if (obj && obj->type == ACPI_TYPE_BUFFER
 834	&& obj->buffer.length == sizeof(struct wmab_ret)) {
 835		ret = *((struct wmab_ret *) obj->buffer.pointer);
 836	} else {
 837		status = AE_ERROR;
 838		goto out;
 839	}
 840
 841	if (ret.eax & 0x1)
 842		interface->capability |= ACER_CAP_BLUETOOTH;
 843
 844	/*
 845	 * This appears to be safe to enable, since all Wistron based laptops
 846	 * appear to use the same EC register for brightness, even if they
 847	 * differ for wireless, etc
 848	 */
 849	if (quirks->brightness >= 0)
 850		interface->capability |= ACER_CAP_BRIGHTNESS;
 851
 852	status = AE_OK;
 853out:
 854	kfree(out.pointer);
 855	return status;
 856}
 857
 858static struct wmi_interface AMW0_interface = {
 859	.type = ACER_AMW0,
 860};
 861
 862static struct wmi_interface AMW0_V2_interface = {
 863	.type = ACER_AMW0_V2,
 864};
 865
 866/*
 867 * New interface (The WMID interface)
 868 */
 869static acpi_status
 870WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 871{
 872	struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 873	struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 874	union acpi_object *obj;
 875	u32 tmp;
 876	acpi_status status;
 877
 878	status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
 879
 880	if (ACPI_FAILURE(status))
 881		return status;
 882
 883	obj = (union acpi_object *) result.pointer;
 884	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 885		(obj->buffer.length == sizeof(u32) ||
 886		obj->buffer.length == sizeof(u64))) {
 887		tmp = *((u32 *) obj->buffer.pointer);
 888	} else if (obj->type == ACPI_TYPE_INTEGER) {
 889		tmp = (u32) obj->integer.value;
 890	} else {
 891		tmp = 0;
 892	}
 893
 894	if (out)
 895		*out = tmp;
 896
 897	kfree(result.pointer);
 898
 899	return status;
 900}
 901
 902static acpi_status WMID_get_u32(u32 *value, u32 cap)
 903{
 904	acpi_status status;
 905	u8 tmp;
 906	u32 result, method_id = 0;
 907
 908	switch (cap) {
 909	case ACER_CAP_WIRELESS:
 910		method_id = ACER_WMID_GET_WIRELESS_METHODID;
 911		break;
 912	case ACER_CAP_BLUETOOTH:
 913		method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 914		break;
 915	case ACER_CAP_BRIGHTNESS:
 916		method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 917		break;
 918	case ACER_CAP_THREEG:
 919		method_id = ACER_WMID_GET_THREEG_METHODID;
 920		break;
 921	case ACER_CAP_MAILLED:
 922		if (quirks->mailled == 1) {
 923			ec_read(0x9f, &tmp);
 924			*value = tmp & 0x1;
 925			return 0;
 926		}
 927	default:
 928		return AE_ERROR;
 929	}
 930	status = WMI_execute_u32(method_id, 0, &result);
 931
 932	if (ACPI_SUCCESS(status))
 933		*value = (u8)result;
 934
 935	return status;
 936}
 937
 938static acpi_status WMID_set_u32(u32 value, u32 cap)
 939{
 940	u32 method_id = 0;
 941	char param;
 942
 943	switch (cap) {
 944	case ACER_CAP_BRIGHTNESS:
 945		if (value > max_brightness)
 946			return AE_BAD_PARAMETER;
 947		method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
 948		break;
 949	case ACER_CAP_WIRELESS:
 950		if (value > 1)
 951			return AE_BAD_PARAMETER;
 952		method_id = ACER_WMID_SET_WIRELESS_METHODID;
 953		break;
 954	case ACER_CAP_BLUETOOTH:
 955		if (value > 1)
 956			return AE_BAD_PARAMETER;
 957		method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
 958		break;
 959	case ACER_CAP_THREEG:
 960		if (value > 1)
 961			return AE_BAD_PARAMETER;
 962		method_id = ACER_WMID_SET_THREEG_METHODID;
 963		break;
 964	case ACER_CAP_MAILLED:
 965		if (value > 1)
 966			return AE_BAD_PARAMETER;
 967		if (quirks->mailled == 1) {
 968			param = value ? 0x92 : 0x93;
 969			i8042_lock_chip();
 970			i8042_command(&param, 0x1059);
 971			i8042_unlock_chip();
 972			return 0;
 973		}
 974		break;
 975	default:
 976		return AE_ERROR;
 977	}
 978	return WMI_execute_u32(method_id, (u32)value, NULL);
 979}
 980
 981static acpi_status wmid3_get_device_status(u32 *value, u16 device)
 982{
 983	struct wmid3_gds_return_value return_value;
 984	acpi_status status;
 985	union acpi_object *obj;
 986	struct wmid3_gds_get_input_param params = {
 987		.function_num = 0x1,
 988		.hotkey_number = commun_fn_key_number,
 989		.devices = device,
 990	};
 991	struct acpi_buffer input = {
 992		sizeof(struct wmid3_gds_get_input_param),
 993		&params
 994	};
 995	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
 996
 997	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
 998	if (ACPI_FAILURE(status))
 999		return status;
1000
1001	obj = output.pointer;
1002
1003	if (!obj)
1004		return AE_ERROR;
1005	else if (obj->type != ACPI_TYPE_BUFFER) {
1006		kfree(obj);
1007		return AE_ERROR;
1008	}
1009	if (obj->buffer.length != 8) {
1010		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1011		kfree(obj);
1012		return AE_ERROR;
1013	}
1014
1015	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1016	kfree(obj);
1017
1018	if (return_value.error_code || return_value.ec_return_value)
1019		pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1020			device,
1021			return_value.error_code,
1022			return_value.ec_return_value);
1023	else
1024		*value = !!(return_value.devices & device);
1025
1026	return status;
1027}
1028
1029static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1030{
1031	u16 device;
1032
1033	switch (cap) {
1034	case ACER_CAP_WIRELESS:
1035		device = ACER_WMID3_GDS_WIRELESS;
1036		break;
1037	case ACER_CAP_BLUETOOTH:
1038		device = ACER_WMID3_GDS_BLUETOOTH;
1039		break;
1040	case ACER_CAP_THREEG:
1041		device = ACER_WMID3_GDS_THREEG;
1042		break;
1043	default:
1044		return AE_ERROR;
1045	}
1046	return wmid3_get_device_status(value, device);
1047}
1048
1049static acpi_status wmid3_set_device_status(u32 value, u16 device)
1050{
1051	struct wmid3_gds_return_value return_value;
1052	acpi_status status;
1053	union acpi_object *obj;
1054	u16 devices;
1055	struct wmid3_gds_get_input_param get_params = {
1056		.function_num = 0x1,
1057		.hotkey_number = commun_fn_key_number,
1058		.devices = commun_func_bitmap,
1059	};
1060	struct acpi_buffer get_input = {
1061		sizeof(struct wmid3_gds_get_input_param),
1062		&get_params
1063	};
1064	struct wmid3_gds_set_input_param set_params = {
1065		.function_num = 0x2,
1066		.hotkey_number = commun_fn_key_number,
1067		.devices = commun_func_bitmap,
1068	};
1069	struct acpi_buffer set_input = {
1070		sizeof(struct wmid3_gds_set_input_param),
1071		&set_params
1072	};
1073	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1074	struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1075
1076	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1077	if (ACPI_FAILURE(status))
1078		return status;
1079
1080	obj = output.pointer;
1081
1082	if (!obj)
1083		return AE_ERROR;
1084	else if (obj->type != ACPI_TYPE_BUFFER) {
1085		kfree(obj);
1086		return AE_ERROR;
1087	}
1088	if (obj->buffer.length != 8) {
1089		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1090		kfree(obj);
1091		return AE_ERROR;
1092	}
1093
1094	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1095	kfree(obj);
1096
1097	if (return_value.error_code || return_value.ec_return_value) {
1098		pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1099			return_value.error_code,
1100			return_value.ec_return_value);
1101		return status;
1102	}
1103
1104	devices = return_value.devices;
1105	set_params.devices = (value) ? (devices | device) : (devices & ~device);
1106
1107	status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1108	if (ACPI_FAILURE(status))
1109		return status;
1110
1111	obj = output2.pointer;
1112
1113	if (!obj)
1114		return AE_ERROR;
1115	else if (obj->type != ACPI_TYPE_BUFFER) {
1116		kfree(obj);
1117		return AE_ERROR;
1118	}
1119	if (obj->buffer.length != 4) {
1120		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1121		kfree(obj);
1122		return AE_ERROR;
1123	}
1124
1125	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1126	kfree(obj);
1127
1128	if (return_value.error_code || return_value.ec_return_value)
1129		pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1130			return_value.error_code,
1131			return_value.ec_return_value);
1132
1133	return status;
1134}
1135
1136static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1137{
1138	u16 device;
1139
1140	switch (cap) {
1141	case ACER_CAP_WIRELESS:
1142		device = ACER_WMID3_GDS_WIRELESS;
1143		break;
1144	case ACER_CAP_BLUETOOTH:
1145		device = ACER_WMID3_GDS_BLUETOOTH;
1146		break;
1147	case ACER_CAP_THREEG:
1148		device = ACER_WMID3_GDS_THREEG;
1149		break;
1150	default:
1151		return AE_ERROR;
1152	}
1153	return wmid3_set_device_status(value, device);
1154}
1155
1156static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
1157{
1158	struct hotkey_function_type_aa *type_aa;
1159
1160	/* We are looking for OEM-specific Type AAh */
1161	if (header->type != 0xAA)
1162		return;
1163
1164	has_type_aa = true;
1165	type_aa = (struct hotkey_function_type_aa *) header;
1166
1167	pr_info("Function bitmap for Communication Button: 0x%x\n",
1168		type_aa->commun_func_bitmap);
1169	commun_func_bitmap = type_aa->commun_func_bitmap;
1170
1171	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1172		interface->capability |= ACER_CAP_WIRELESS;
1173	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1174		interface->capability |= ACER_CAP_THREEG;
1175	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1176		interface->capability |= ACER_CAP_BLUETOOTH;
1177
1178	commun_fn_key_number = type_aa->commun_fn_key_number;
1179}
1180
1181static acpi_status WMID_set_capabilities(void)
1182{
1183	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1184	union acpi_object *obj;
1185	acpi_status status;
1186	u32 devices;
1187
1188	status = wmi_query_block(WMID_GUID2, 1, &out);
1189	if (ACPI_FAILURE(status))
1190		return status;
1191
1192	obj = (union acpi_object *) out.pointer;
1193	if (obj && obj->type == ACPI_TYPE_BUFFER &&
1194		(obj->buffer.length == sizeof(u32) ||
1195		obj->buffer.length == sizeof(u64))) {
1196		devices = *((u32 *) obj->buffer.pointer);
1197	} else if (obj->type == ACPI_TYPE_INTEGER) {
1198		devices = (u32) obj->integer.value;
 
 
 
 
 
1199	} else {
1200		kfree(out.pointer);
1201		return AE_ERROR;
1202	}
1203
1204	pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1205	if (devices & 0x07)
1206		interface->capability |= ACER_CAP_WIRELESS;
1207	if (devices & 0x40)
1208		interface->capability |= ACER_CAP_THREEG;
1209	if (devices & 0x10)
1210		interface->capability |= ACER_CAP_BLUETOOTH;
1211
1212	if (!(devices & 0x20))
1213		max_brightness = 0x9;
1214
1215	kfree(out.pointer);
1216	return status;
1217}
1218
1219static struct wmi_interface wmid_interface = {
1220	.type = ACER_WMID,
1221};
1222
1223static struct wmi_interface wmid_v2_interface = {
1224	.type = ACER_WMID_v2,
1225};
1226
1227/*
1228 * Generic Device (interface-independent)
1229 */
1230
1231static acpi_status get_u32(u32 *value, u32 cap)
1232{
1233	acpi_status status = AE_ERROR;
1234
1235	switch (interface->type) {
1236	case ACER_AMW0:
1237		status = AMW0_get_u32(value, cap);
1238		break;
1239	case ACER_AMW0_V2:
1240		if (cap == ACER_CAP_MAILLED) {
1241			status = AMW0_get_u32(value, cap);
1242			break;
1243		}
1244	case ACER_WMID:
1245		status = WMID_get_u32(value, cap);
1246		break;
1247	case ACER_WMID_v2:
1248		if (cap & (ACER_CAP_WIRELESS |
1249			   ACER_CAP_BLUETOOTH |
1250			   ACER_CAP_THREEG))
1251			status = wmid_v2_get_u32(value, cap);
1252		else if (wmi_has_guid(WMID_GUID2))
1253			status = WMID_get_u32(value, cap);
1254		break;
1255	}
1256
1257	return status;
1258}
1259
1260static acpi_status set_u32(u32 value, u32 cap)
1261{
1262	acpi_status status;
1263
1264	if (interface->capability & cap) {
1265		switch (interface->type) {
1266		case ACER_AMW0:
1267			return AMW0_set_u32(value, cap);
1268		case ACER_AMW0_V2:
1269			if (cap == ACER_CAP_MAILLED)
1270				return AMW0_set_u32(value, cap);
1271
1272			/*
1273			 * On some models, some WMID methods don't toggle
1274			 * properly. For those cases, we want to run the AMW0
1275			 * method afterwards to be certain we've really toggled
1276			 * the device state.
1277			 */
1278			if (cap == ACER_CAP_WIRELESS ||
1279				cap == ACER_CAP_BLUETOOTH) {
1280				status = WMID_set_u32(value, cap);
1281				if (ACPI_FAILURE(status))
1282					return status;
1283
1284				return AMW0_set_u32(value, cap);
1285			}
1286		case ACER_WMID:
1287			return WMID_set_u32(value, cap);
1288		case ACER_WMID_v2:
1289			if (cap & (ACER_CAP_WIRELESS |
1290				   ACER_CAP_BLUETOOTH |
1291				   ACER_CAP_THREEG))
1292				return wmid_v2_set_u32(value, cap);
1293			else if (wmi_has_guid(WMID_GUID2))
1294				return WMID_set_u32(value, cap);
1295		default:
1296			return AE_BAD_PARAMETER;
1297		}
1298	}
1299	return AE_BAD_PARAMETER;
1300}
1301
1302static void __init acer_commandline_init(void)
1303{
1304	/*
1305	 * These will all fail silently if the value given is invalid, or the
1306	 * capability isn't available on the given interface
1307	 */
1308	if (mailled >= 0)
1309		set_u32(mailled, ACER_CAP_MAILLED);
1310	if (!has_type_aa && threeg >= 0)
1311		set_u32(threeg, ACER_CAP_THREEG);
1312	if (brightness >= 0)
1313		set_u32(brightness, ACER_CAP_BRIGHTNESS);
1314}
1315
1316/*
1317 * LED device (Mail LED only, no other LEDs known yet)
1318 */
1319static void mail_led_set(struct led_classdev *led_cdev,
1320enum led_brightness value)
1321{
1322	set_u32(value, ACER_CAP_MAILLED);
1323}
1324
1325static struct led_classdev mail_led = {
1326	.name = "acer-wmi::mail",
1327	.brightness_set = mail_led_set,
1328};
1329
1330static int __devinit acer_led_init(struct device *dev)
1331{
1332	return led_classdev_register(dev, &mail_led);
1333}
1334
1335static void acer_led_exit(void)
1336{
1337	set_u32(LED_OFF, ACER_CAP_MAILLED);
1338	led_classdev_unregister(&mail_led);
1339}
1340
1341/*
1342 * Backlight device
1343 */
1344static struct backlight_device *acer_backlight_device;
1345
1346static int read_brightness(struct backlight_device *bd)
1347{
1348	u32 value;
1349	get_u32(&value, ACER_CAP_BRIGHTNESS);
1350	return value;
1351}
1352
1353static int update_bl_status(struct backlight_device *bd)
1354{
1355	int intensity = bd->props.brightness;
1356
1357	if (bd->props.power != FB_BLANK_UNBLANK)
1358		intensity = 0;
1359	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1360		intensity = 0;
1361
1362	set_u32(intensity, ACER_CAP_BRIGHTNESS);
1363
1364	return 0;
1365}
1366
1367static const struct backlight_ops acer_bl_ops = {
1368	.get_brightness = read_brightness,
1369	.update_status = update_bl_status,
1370};
1371
1372static int __devinit acer_backlight_init(struct device *dev)
1373{
1374	struct backlight_properties props;
1375	struct backlight_device *bd;
1376
1377	memset(&props, 0, sizeof(struct backlight_properties));
1378	props.type = BACKLIGHT_PLATFORM;
1379	props.max_brightness = max_brightness;
1380	bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1381				       &props);
1382	if (IS_ERR(bd)) {
1383		pr_err("Could not register Acer backlight device\n");
1384		acer_backlight_device = NULL;
1385		return PTR_ERR(bd);
1386	}
1387
1388	acer_backlight_device = bd;
1389
1390	bd->props.power = FB_BLANK_UNBLANK;
1391	bd->props.brightness = read_brightness(bd);
1392	backlight_update_status(bd);
1393	return 0;
1394}
1395
1396static void acer_backlight_exit(void)
1397{
1398	backlight_device_unregister(acer_backlight_device);
1399}
1400
1401/*
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1402 * Rfkill devices
1403 */
1404static void acer_rfkill_update(struct work_struct *ignored);
1405static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1406static void acer_rfkill_update(struct work_struct *ignored)
1407{
1408	u32 state;
1409	acpi_status status;
1410
1411	if (has_cap(ACER_CAP_WIRELESS)) {
1412		status = get_u32(&state, ACER_CAP_WIRELESS);
1413		if (ACPI_SUCCESS(status)) {
1414			if (quirks->wireless == 3)
1415				rfkill_set_hw_state(wireless_rfkill, !state);
1416			else
1417				rfkill_set_sw_state(wireless_rfkill, !state);
1418		}
1419	}
1420
1421	if (has_cap(ACER_CAP_BLUETOOTH)) {
1422		status = get_u32(&state, ACER_CAP_BLUETOOTH);
1423		if (ACPI_SUCCESS(status))
1424			rfkill_set_sw_state(bluetooth_rfkill, !state);
1425	}
1426
1427	if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1428		status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1429		if (ACPI_SUCCESS(status))
1430			rfkill_set_sw_state(threeg_rfkill, !state);
1431	}
1432
1433	schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1434}
1435
1436static int acer_rfkill_set(void *data, bool blocked)
1437{
1438	acpi_status status;
1439	u32 cap = (unsigned long)data;
1440
1441	if (rfkill_inited) {
1442		status = set_u32(!blocked, cap);
1443		if (ACPI_FAILURE(status))
1444			return -ENODEV;
1445	}
1446
1447	return 0;
1448}
1449
1450static const struct rfkill_ops acer_rfkill_ops = {
1451	.set_block = acer_rfkill_set,
1452};
1453
1454static struct rfkill *acer_rfkill_register(struct device *dev,
1455					   enum rfkill_type type,
1456					   char *name, u32 cap)
1457{
1458	int err;
1459	struct rfkill *rfkill_dev;
1460	u32 state;
1461	acpi_status status;
1462
1463	rfkill_dev = rfkill_alloc(name, dev, type,
1464				  &acer_rfkill_ops,
1465				  (void *)(unsigned long)cap);
1466	if (!rfkill_dev)
1467		return ERR_PTR(-ENOMEM);
1468
1469	status = get_u32(&state, cap);
1470
1471	err = rfkill_register(rfkill_dev);
1472	if (err) {
1473		rfkill_destroy(rfkill_dev);
1474		return ERR_PTR(err);
1475	}
1476
1477	if (ACPI_SUCCESS(status))
1478		rfkill_set_sw_state(rfkill_dev, !state);
1479
1480	return rfkill_dev;
1481}
1482
1483static int acer_rfkill_init(struct device *dev)
1484{
1485	int err;
1486
1487	if (has_cap(ACER_CAP_WIRELESS)) {
1488		wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1489			"acer-wireless", ACER_CAP_WIRELESS);
1490		if (IS_ERR(wireless_rfkill)) {
1491			err = PTR_ERR(wireless_rfkill);
1492			goto error_wireless;
1493		}
1494	}
1495
1496	if (has_cap(ACER_CAP_BLUETOOTH)) {
1497		bluetooth_rfkill = acer_rfkill_register(dev,
1498			RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1499			ACER_CAP_BLUETOOTH);
1500		if (IS_ERR(bluetooth_rfkill)) {
1501			err = PTR_ERR(bluetooth_rfkill);
1502			goto error_bluetooth;
1503		}
1504	}
1505
1506	if (has_cap(ACER_CAP_THREEG)) {
1507		threeg_rfkill = acer_rfkill_register(dev,
1508			RFKILL_TYPE_WWAN, "acer-threeg",
1509			ACER_CAP_THREEG);
1510		if (IS_ERR(threeg_rfkill)) {
1511			err = PTR_ERR(threeg_rfkill);
1512			goto error_threeg;
1513		}
1514	}
1515
1516	rfkill_inited = true;
1517
1518	if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1519	    has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1520		schedule_delayed_work(&acer_rfkill_work,
1521			round_jiffies_relative(HZ));
1522
1523	return 0;
1524
1525error_threeg:
1526	if (has_cap(ACER_CAP_BLUETOOTH)) {
1527		rfkill_unregister(bluetooth_rfkill);
1528		rfkill_destroy(bluetooth_rfkill);
1529	}
1530error_bluetooth:
1531	if (has_cap(ACER_CAP_WIRELESS)) {
1532		rfkill_unregister(wireless_rfkill);
1533		rfkill_destroy(wireless_rfkill);
1534	}
1535error_wireless:
1536	return err;
1537}
1538
1539static void acer_rfkill_exit(void)
1540{
1541	if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1542	    has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1543		cancel_delayed_work_sync(&acer_rfkill_work);
1544
1545	if (has_cap(ACER_CAP_WIRELESS)) {
1546		rfkill_unregister(wireless_rfkill);
1547		rfkill_destroy(wireless_rfkill);
1548	}
1549
1550	if (has_cap(ACER_CAP_BLUETOOTH)) {
1551		rfkill_unregister(bluetooth_rfkill);
1552		rfkill_destroy(bluetooth_rfkill);
1553	}
1554
1555	if (has_cap(ACER_CAP_THREEG)) {
1556		rfkill_unregister(threeg_rfkill);
1557		rfkill_destroy(threeg_rfkill);
1558	}
1559	return;
1560}
1561
1562/*
1563 * sysfs interface
1564 */
1565static ssize_t show_bool_threeg(struct device *dev,
1566	struct device_attribute *attr, char *buf)
1567{
1568	u32 result; \
1569	acpi_status status;
1570
1571	pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1572		current->comm);
1573	status = get_u32(&result, ACER_CAP_THREEG);
1574	if (ACPI_SUCCESS(status))
1575		return sprintf(buf, "%u\n", result);
1576	return sprintf(buf, "Read error\n");
1577}
1578
1579static ssize_t set_bool_threeg(struct device *dev,
1580	struct device_attribute *attr, const char *buf, size_t count)
1581{
1582	u32 tmp = simple_strtoul(buf, NULL, 10);
1583	acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
1584	pr_info("This threeg sysfs will be removed in 2012 - used by: %s\n",
1585		current->comm);
1586	if (ACPI_FAILURE(status))
1587		return -EINVAL;
1588	return count;
1589}
1590static DEVICE_ATTR(threeg, S_IRUGO | S_IWUSR, show_bool_threeg,
1591	set_bool_threeg);
1592
1593static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
1594	char *buf)
1595{
1596	pr_info("This interface sysfs will be removed in 2012 - used by: %s\n",
1597		current->comm);
1598	switch (interface->type) {
1599	case ACER_AMW0:
1600		return sprintf(buf, "AMW0\n");
1601	case ACER_AMW0_V2:
1602		return sprintf(buf, "AMW0 v2\n");
1603	case ACER_WMID:
1604		return sprintf(buf, "WMID\n");
1605	case ACER_WMID_v2:
1606		return sprintf(buf, "WMID v2\n");
1607	default:
1608		return sprintf(buf, "Error!\n");
1609	}
1610}
1611
1612static DEVICE_ATTR(interface, S_IRUGO, show_interface, NULL);
1613
1614static void acer_wmi_notify(u32 value, void *context)
1615{
1616	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1617	union acpi_object *obj;
1618	struct event_return_value return_value;
1619	acpi_status status;
1620	u16 device_state;
1621	const struct key_entry *key;
 
1622
1623	status = wmi_get_event_data(value, &response);
1624	if (status != AE_OK) {
1625		pr_warn("bad event status 0x%x\n", status);
1626		return;
1627	}
1628
1629	obj = (union acpi_object *)response.pointer;
1630
1631	if (!obj)
1632		return;
1633	if (obj->type != ACPI_TYPE_BUFFER) {
1634		pr_warn("Unknown response received %d\n", obj->type);
1635		kfree(obj);
1636		return;
1637	}
1638	if (obj->buffer.length != 8) {
1639		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1640		kfree(obj);
1641		return;
1642	}
1643
1644	return_value = *((struct event_return_value *)obj->buffer.pointer);
1645	kfree(obj);
1646
1647	switch (return_value.function) {
1648	case WMID_HOTKEY_EVENT:
1649		device_state = return_value.device_state;
1650		pr_debug("device state: 0x%x\n", device_state);
1651
1652		key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1653							return_value.key_num);
1654		if (!key) {
1655			pr_warn("Unknown key number - 0x%x\n",
1656				return_value.key_num);
1657		} else {
 
1658			switch (key->keycode) {
1659			case KEY_WLAN:
1660			case KEY_BLUETOOTH:
1661				if (has_cap(ACER_CAP_WIRELESS))
1662					rfkill_set_sw_state(wireless_rfkill,
1663						!(device_state & ACER_WMID3_GDS_WIRELESS));
1664				if (has_cap(ACER_CAP_THREEG))
1665					rfkill_set_sw_state(threeg_rfkill,
1666						!(device_state & ACER_WMID3_GDS_THREEG));
1667				if (has_cap(ACER_CAP_BLUETOOTH))
1668					rfkill_set_sw_state(bluetooth_rfkill,
1669						!(device_state & ACER_WMID3_GDS_BLUETOOTH));
1670				break;
 
 
 
1671			}
1672			sparse_keymap_report_entry(acer_wmi_input_dev, key,
1673						   1, true);
1674		}
1675		break;
 
 
 
1676	default:
1677		pr_warn("Unknown function number - %d - %d\n",
1678			return_value.function, return_value.key_num);
1679		break;
1680	}
1681}
1682
1683static acpi_status
1684wmid3_set_lm_mode(struct lm_input_params *params,
1685		  struct lm_return_value *return_value)
1686{
1687	acpi_status status;
1688	union acpi_object *obj;
1689
1690	struct acpi_buffer input = { sizeof(struct lm_input_params), params };
1691	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1692
1693	status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1694	if (ACPI_FAILURE(status))
1695		return status;
1696
1697	obj = output.pointer;
1698
1699	if (!obj)
1700		return AE_ERROR;
1701	else if (obj->type != ACPI_TYPE_BUFFER) {
1702		kfree(obj);
1703		return AE_ERROR;
1704	}
1705	if (obj->buffer.length != 4) {
1706		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1707		kfree(obj);
1708		return AE_ERROR;
1709	}
1710
1711	*return_value = *((struct lm_return_value *)obj->buffer.pointer);
1712	kfree(obj);
1713
1714	return status;
1715}
1716
1717static int acer_wmi_enable_ec_raw(void)
1718{
1719	struct lm_return_value return_value;
1720	acpi_status status;
1721	struct lm_input_params params = {
1722		.function_num = 0x1,
1723		.commun_devices = 0xFFFF,
1724		.devices = 0xFFFF,
1725		.lm_status = 0x00,            /* Launch Manager Deactive */
1726	};
1727
1728	status = wmid3_set_lm_mode(&params, &return_value);
1729
1730	if (return_value.error_code || return_value.ec_return_value)
1731		pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1732			return_value.error_code,
1733			return_value.ec_return_value);
1734	else
1735		pr_info("Enabled EC raw mode\n");
1736
1737	return status;
1738}
1739
1740static int acer_wmi_enable_lm(void)
1741{
1742	struct lm_return_value return_value;
1743	acpi_status status;
1744	struct lm_input_params params = {
1745		.function_num = 0x1,
1746		.commun_devices = 0xFFFF,
1747		.devices = 0xFFFF,
1748		.lm_status = 0x01,            /* Launch Manager Active */
1749	};
1750
1751	status = wmid3_set_lm_mode(&params, &return_value);
1752
1753	if (return_value.error_code || return_value.ec_return_value)
1754		pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1755			return_value.error_code,
1756			return_value.ec_return_value);
1757
1758	return status;
1759}
1760
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1761static int __init acer_wmi_input_setup(void)
1762{
1763	acpi_status status;
1764	int err;
1765
1766	acer_wmi_input_dev = input_allocate_device();
1767	if (!acer_wmi_input_dev)
1768		return -ENOMEM;
1769
1770	acer_wmi_input_dev->name = "Acer WMI hotkeys";
1771	acer_wmi_input_dev->phys = "wmi/input0";
1772	acer_wmi_input_dev->id.bustype = BUS_HOST;
1773
1774	err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1775	if (err)
1776		goto err_free_dev;
1777
1778	status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1779						acer_wmi_notify, NULL);
1780	if (ACPI_FAILURE(status)) {
1781		err = -EIO;
1782		goto err_free_keymap;
1783	}
1784
1785	err = input_register_device(acer_wmi_input_dev);
1786	if (err)
1787		goto err_uninstall_notifier;
1788
1789	return 0;
1790
1791err_uninstall_notifier:
1792	wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1793err_free_keymap:
1794	sparse_keymap_free(acer_wmi_input_dev);
1795err_free_dev:
1796	input_free_device(acer_wmi_input_dev);
1797	return err;
1798}
1799
1800static void acer_wmi_input_destroy(void)
1801{
1802	wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1803	sparse_keymap_free(acer_wmi_input_dev);
1804	input_unregister_device(acer_wmi_input_dev);
1805}
1806
1807/*
1808 * debugfs functions
1809 */
1810static u32 get_wmid_devices(void)
1811{
1812	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1813	union acpi_object *obj;
1814	acpi_status status;
1815	u32 devices = 0;
1816
1817	status = wmi_query_block(WMID_GUID2, 1, &out);
1818	if (ACPI_FAILURE(status))
1819		return 0;
1820
1821	obj = (union acpi_object *) out.pointer;
1822	if (obj && obj->type == ACPI_TYPE_BUFFER &&
1823		(obj->buffer.length == sizeof(u32) ||
1824		obj->buffer.length == sizeof(u64))) {
1825		devices = *((u32 *) obj->buffer.pointer);
1826	} else if (obj->type == ACPI_TYPE_INTEGER) {
1827		devices = (u32) obj->integer.value;
 
 
1828	}
1829
1830	kfree(out.pointer);
1831	return devices;
1832}
1833
1834/*
1835 * Platform device
1836 */
1837static int __devinit acer_platform_probe(struct platform_device *device)
1838{
1839	int err;
1840
1841	if (has_cap(ACER_CAP_MAILLED)) {
1842		err = acer_led_init(&device->dev);
1843		if (err)
1844			goto error_mailled;
1845	}
1846
1847	if (has_cap(ACER_CAP_BRIGHTNESS)) {
1848		err = acer_backlight_init(&device->dev);
1849		if (err)
1850			goto error_brightness;
1851	}
1852
1853	err = acer_rfkill_init(&device->dev);
1854	if (err)
1855		goto error_rfkill;
1856
1857	return err;
1858
1859error_rfkill:
1860	if (has_cap(ACER_CAP_BRIGHTNESS))
1861		acer_backlight_exit();
1862error_brightness:
1863	if (has_cap(ACER_CAP_MAILLED))
1864		acer_led_exit();
1865error_mailled:
1866	return err;
1867}
1868
1869static int acer_platform_remove(struct platform_device *device)
1870{
1871	if (has_cap(ACER_CAP_MAILLED))
1872		acer_led_exit();
1873	if (has_cap(ACER_CAP_BRIGHTNESS))
1874		acer_backlight_exit();
1875
1876	acer_rfkill_exit();
1877	return 0;
1878}
1879
1880static int acer_platform_suspend(struct platform_device *dev,
1881pm_message_t state)
1882{
1883	u32 value;
1884	struct acer_data *data = &interface->data;
1885
1886	if (!data)
1887		return -ENOMEM;
1888
1889	if (has_cap(ACER_CAP_MAILLED)) {
1890		get_u32(&value, ACER_CAP_MAILLED);
1891		set_u32(LED_OFF, ACER_CAP_MAILLED);
1892		data->mailled = value;
1893	}
1894
1895	if (has_cap(ACER_CAP_BRIGHTNESS)) {
1896		get_u32(&value, ACER_CAP_BRIGHTNESS);
1897		data->brightness = value;
1898	}
1899
1900	return 0;
1901}
1902
1903static int acer_platform_resume(struct platform_device *device)
1904{
1905	struct acer_data *data = &interface->data;
1906
1907	if (!data)
1908		return -ENOMEM;
1909
1910	if (has_cap(ACER_CAP_MAILLED))
1911		set_u32(data->mailled, ACER_CAP_MAILLED);
1912
1913	if (has_cap(ACER_CAP_BRIGHTNESS))
1914		set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
1915
 
 
 
1916	return 0;
1917}
1918
 
 
1919static void acer_platform_shutdown(struct platform_device *device)
1920{
1921	struct acer_data *data = &interface->data;
1922
1923	if (!data)
1924		return;
1925
1926	if (has_cap(ACER_CAP_MAILLED))
1927		set_u32(LED_OFF, ACER_CAP_MAILLED);
1928}
1929
1930static struct platform_driver acer_platform_driver = {
1931	.driver = {
1932		.name = "acer-wmi",
1933		.owner = THIS_MODULE,
 
1934	},
1935	.probe = acer_platform_probe,
1936	.remove = acer_platform_remove,
1937	.suspend = acer_platform_suspend,
1938	.resume = acer_platform_resume,
1939	.shutdown = acer_platform_shutdown,
1940};
1941
1942static struct platform_device *acer_platform_device;
1943
1944static int remove_sysfs(struct platform_device *device)
1945{
1946	if (has_cap(ACER_CAP_THREEG))
1947		device_remove_file(&device->dev, &dev_attr_threeg);
1948
1949	device_remove_file(&device->dev, &dev_attr_interface);
1950
1951	return 0;
1952}
1953
1954static int create_sysfs(void)
1955{
1956	int retval = -ENOMEM;
1957
1958	if (has_cap(ACER_CAP_THREEG)) {
1959		retval = device_create_file(&acer_platform_device->dev,
1960			&dev_attr_threeg);
1961		if (retval)
1962			goto error_sysfs;
1963	}
1964
1965	retval = device_create_file(&acer_platform_device->dev,
1966		&dev_attr_interface);
1967	if (retval)
1968		goto error_sysfs;
1969
1970	return 0;
1971
1972error_sysfs:
1973		remove_sysfs(acer_platform_device);
1974	return retval;
1975}
1976
1977static void remove_debugfs(void)
1978{
1979	debugfs_remove(interface->debug.devices);
1980	debugfs_remove(interface->debug.root);
1981}
1982
1983static int create_debugfs(void)
1984{
1985	interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
1986	if (!interface->debug.root) {
1987		pr_err("Failed to create debugfs directory");
1988		return -ENOMEM;
1989	}
1990
1991	interface->debug.devices = debugfs_create_u32("devices", S_IRUGO,
1992					interface->debug.root,
1993					&interface->debug.wmid_devices);
1994	if (!interface->debug.devices)
1995		goto error_debugfs;
1996
1997	return 0;
1998
1999error_debugfs:
2000	remove_debugfs();
2001	return -ENOMEM;
2002}
2003
2004static int __init acer_wmi_init(void)
2005{
2006	int err;
2007
2008	pr_info("Acer Laptop ACPI-WMI Extras\n");
2009
2010	if (dmi_check_system(acer_blacklist)) {
2011		pr_info("Blacklisted hardware detected - not loading\n");
2012		return -ENODEV;
2013	}
2014
2015	find_quirks();
2016
2017	/*
2018	 * Detect which ACPI-WMI interface we're using.
2019	 */
2020	if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2021		interface = &AMW0_V2_interface;
2022
2023	if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2024		interface = &wmid_interface;
2025
2026	if (wmi_has_guid(WMID_GUID3))
2027		interface = &wmid_v2_interface;
2028
2029	if (interface)
2030		dmi_walk(type_aa_dmi_decode, NULL);
2031
2032	if (wmi_has_guid(WMID_GUID2) && interface) {
2033		if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2034			pr_err("Unable to detect available WMID devices\n");
2035			return -ENODEV;
2036		}
2037		/* WMID always provides brightness methods */
2038		interface->capability |= ACER_CAP_BRIGHTNESS;
2039	} else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2040		pr_err("No WMID device detection method found\n");
2041		return -ENODEV;
2042	}
2043
2044	if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2045		interface = &AMW0_interface;
2046
2047		if (ACPI_FAILURE(AMW0_set_capabilities())) {
2048			pr_err("Unable to detect available AMW0 devices\n");
2049			return -ENODEV;
2050		}
2051	}
2052
2053	if (wmi_has_guid(AMW0_GUID1))
2054		AMW0_find_mailled();
2055
2056	if (!interface) {
2057		pr_err("No or unsupported WMI interface, unable to load\n");
2058		return -ENODEV;
2059	}
2060
2061	set_quirks();
2062
 
 
2063	if (acpi_video_backlight_support()) {
2064		if (dmi_check_system(video_vendor_dmi_table)) {
2065			acpi_video_unregister();
2066		} else {
2067			interface->capability &= ~ACER_CAP_BRIGHTNESS;
2068			pr_info("Brightness must be controlled by "
2069				"acpi video driver\n");
2070		}
2071	}
2072
2073	if (wmi_has_guid(WMID_GUID3)) {
2074		if (ec_raw_mode) {
2075			if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2076				pr_err("Cannot enable EC raw mode\n");
2077				return -ENODEV;
2078			}
2079		} else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2080			pr_err("Cannot enable Launch Manager mode\n");
2081			return -ENODEV;
2082		}
2083	} else if (ec_raw_mode) {
2084		pr_info("No WMID EC raw mode enable method\n");
2085	}
2086
2087	if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2088		err = acer_wmi_input_setup();
2089		if (err)
2090			return err;
2091	}
2092
 
 
2093	err = platform_driver_register(&acer_platform_driver);
2094	if (err) {
2095		pr_err("Unable to register platform driver\n");
2096		goto error_platform_register;
2097	}
2098
2099	acer_platform_device = platform_device_alloc("acer-wmi", -1);
2100	if (!acer_platform_device) {
2101		err = -ENOMEM;
2102		goto error_device_alloc;
2103	}
2104
2105	err = platform_device_add(acer_platform_device);
2106	if (err)
2107		goto error_device_add;
2108
2109	err = create_sysfs();
2110	if (err)
2111		goto error_create_sys;
2112
2113	if (wmi_has_guid(WMID_GUID2)) {
2114		interface->debug.wmid_devices = get_wmid_devices();
2115		err = create_debugfs();
2116		if (err)
2117			goto error_create_debugfs;
2118	}
2119
2120	/* Override any initial settings with values from the commandline */
2121	acer_commandline_init();
2122
2123	return 0;
2124
2125error_create_debugfs:
2126	remove_sysfs(acer_platform_device);
2127error_create_sys:
2128	platform_device_del(acer_platform_device);
2129error_device_add:
2130	platform_device_put(acer_platform_device);
2131error_device_alloc:
2132	platform_driver_unregister(&acer_platform_driver);
2133error_platform_register:
2134	if (wmi_has_guid(ACERWMID_EVENT_GUID))
2135		acer_wmi_input_destroy();
 
 
2136
2137	return err;
2138}
2139
2140static void __exit acer_wmi_exit(void)
2141{
2142	if (wmi_has_guid(ACERWMID_EVENT_GUID))
2143		acer_wmi_input_destroy();
 
 
 
2144
2145	remove_sysfs(acer_platform_device);
2146	remove_debugfs();
2147	platform_device_unregister(acer_platform_device);
2148	platform_driver_unregister(&acer_platform_driver);
2149
2150	pr_info("Acer Laptop WMI Extras unloaded\n");
2151	return;
2152}
2153
2154module_init(acer_wmi_init);
2155module_exit(acer_wmi_exit);