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/drivers/platform/x86/acer-wmi.c

http://github.com/mirrors/linux
C | 2295 lines | 1820 code | 321 blank | 154 comment | 294 complexity | 40a1773a978edefdddf0f1ddd3dff9e9 MD5 | raw file
   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Acer WMI Laptop Extras
   4 *
   5 *  Copyright (C) 2007-2009	Carlos Corbacho <carlos@strangeworlds.co.uk>
   6 *
   7 *  Based on acer_acpi:
   8 *    Copyright (C) 2005-2007	E.M. Smith
   9 *    Copyright (C) 2007-2008	Carlos Corbacho <cathectic@gmail.com>
  10 */
  11
  12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  13
  14#include <linux/kernel.h>
  15#include <linux/module.h>
  16#include <linux/init.h>
  17#include <linux/types.h>
  18#include <linux/dmi.h>
  19#include <linux/fb.h>
  20#include <linux/backlight.h>
  21#include <linux/leds.h>
  22#include <linux/platform_device.h>
  23#include <linux/acpi.h>
  24#include <linux/i8042.h>
  25#include <linux/rfkill.h>
  26#include <linux/workqueue.h>
  27#include <linux/debugfs.h>
  28#include <linux/slab.h>
  29#include <linux/input.h>
  30#include <linux/input/sparse-keymap.h>
  31#include <acpi/video.h>
  32
  33MODULE_AUTHOR("Carlos Corbacho");
  34MODULE_DESCRIPTION("Acer Laptop WMI Extras Driver");
  35MODULE_LICENSE("GPL");
  36
  37/*
  38 * Magic Number
  39 * Meaning is unknown - this number is required for writing to ACPI for AMW0
  40 * (it's also used in acerhk when directly accessing the BIOS)
  41 */
  42#define ACER_AMW0_WRITE	0x9610
  43
  44/*
  45 * Bit masks for the AMW0 interface
  46 */
  47#define ACER_AMW0_WIRELESS_MASK  0x35
  48#define ACER_AMW0_BLUETOOTH_MASK 0x34
  49#define ACER_AMW0_MAILLED_MASK   0x31
  50
  51/*
  52 * Method IDs for WMID interface
  53 */
  54#define ACER_WMID_GET_WIRELESS_METHODID		1
  55#define ACER_WMID_GET_BLUETOOTH_METHODID	2
  56#define ACER_WMID_GET_BRIGHTNESS_METHODID	3
  57#define ACER_WMID_SET_WIRELESS_METHODID		4
  58#define ACER_WMID_SET_BLUETOOTH_METHODID	5
  59#define ACER_WMID_SET_BRIGHTNESS_METHODID	6
  60#define ACER_WMID_GET_THREEG_METHODID		10
  61#define ACER_WMID_SET_THREEG_METHODID		11
  62
  63/*
  64 * Acer ACPI method GUIDs
  65 */
  66#define AMW0_GUID1		"67C3371D-95A3-4C37-BB61-DD47B491DAAB"
  67#define AMW0_GUID2		"431F16ED-0C2B-444C-B267-27DEB140CF9C"
  68#define WMID_GUID1		"6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3"
  69#define WMID_GUID2		"95764E09-FB56-4E83-B31A-37761F60994A"
  70#define WMID_GUID3		"61EF69EA-865C-4BC3-A502-A0DEBA0CB531"
  71
  72/*
  73 * Acer ACPI event GUIDs
  74 */
  75#define ACERWMID_EVENT_GUID "676AA15E-6A47-4D9F-A2CC-1E6D18D14026"
  76
  77MODULE_ALIAS("wmi:67C3371D-95A3-4C37-BB61-DD47B491DAAB");
  78MODULE_ALIAS("wmi:6AF4F258-B401-42FD-BE91-3D4AC2D7C0D3");
  79MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026");
  80
  81enum acer_wmi_event_ids {
  82	WMID_HOTKEY_EVENT = 0x1,
  83	WMID_ACCEL_EVENT = 0x5,
  84};
  85
  86static const struct key_entry acer_wmi_keymap[] __initconst = {
  87	{KE_KEY, 0x01, {KEY_WLAN} },     /* WiFi */
  88	{KE_KEY, 0x03, {KEY_WLAN} },     /* WiFi */
  89	{KE_KEY, 0x04, {KEY_WLAN} },     /* WiFi */
  90	{KE_KEY, 0x12, {KEY_BLUETOOTH} },	/* BT */
  91	{KE_KEY, 0x21, {KEY_PROG1} },    /* Backup */
  92	{KE_KEY, 0x22, {KEY_PROG2} },    /* Arcade */
  93	{KE_KEY, 0x23, {KEY_PROG3} },    /* P_Key */
  94	{KE_KEY, 0x24, {KEY_PROG4} },    /* Social networking_Key */
  95	{KE_KEY, 0x29, {KEY_PROG3} },    /* P_Key for TM8372 */
  96	{KE_IGNORE, 0x41, {KEY_MUTE} },
  97	{KE_IGNORE, 0x42, {KEY_PREVIOUSSONG} },
  98	{KE_IGNORE, 0x4d, {KEY_PREVIOUSSONG} },
  99	{KE_IGNORE, 0x43, {KEY_NEXTSONG} },
 100	{KE_IGNORE, 0x4e, {KEY_NEXTSONG} },
 101	{KE_IGNORE, 0x44, {KEY_PLAYPAUSE} },
 102	{KE_IGNORE, 0x4f, {KEY_PLAYPAUSE} },
 103	{KE_IGNORE, 0x45, {KEY_STOP} },
 104	{KE_IGNORE, 0x50, {KEY_STOP} },
 105	{KE_IGNORE, 0x48, {KEY_VOLUMEUP} },
 106	{KE_IGNORE, 0x49, {KEY_VOLUMEDOWN} },
 107	{KE_IGNORE, 0x4a, {KEY_VOLUMEDOWN} },
 108	{KE_IGNORE, 0x61, {KEY_SWITCHVIDEOMODE} },
 109	{KE_IGNORE, 0x62, {KEY_BRIGHTNESSUP} },
 110	{KE_IGNORE, 0x63, {KEY_BRIGHTNESSDOWN} },
 111	{KE_KEY, 0x64, {KEY_SWITCHVIDEOMODE} },	/* Display Switch */
 112	{KE_IGNORE, 0x81, {KEY_SLEEP} },
 113	{KE_KEY, 0x82, {KEY_TOUCHPAD_TOGGLE} },	/* Touch Pad Toggle */
 114	{KE_KEY, KEY_TOUCHPAD_ON, {KEY_TOUCHPAD_ON} },
 115	{KE_KEY, KEY_TOUCHPAD_OFF, {KEY_TOUCHPAD_OFF} },
 116	{KE_IGNORE, 0x83, {KEY_TOUCHPAD_TOGGLE} },
 117	{KE_KEY, 0x85, {KEY_TOUCHPAD_TOGGLE} },
 118	{KE_KEY, 0x86, {KEY_WLAN} },
 119	{KE_KEY, 0x87, {KEY_POWER} },
 120	{KE_END, 0}
 121};
 122
 123static struct input_dev *acer_wmi_input_dev;
 124static struct input_dev *acer_wmi_accel_dev;
 125
 126struct event_return_value {
 127	u8 function;
 128	u8 key_num;
 129	u16 device_state;
 130	u32 reserved;
 131} __attribute__((packed));
 132
 133/*
 134 * GUID3 Get Device Status device flags
 135 */
 136#define ACER_WMID3_GDS_WIRELESS		(1<<0)	/* WiFi */
 137#define ACER_WMID3_GDS_THREEG		(1<<6)	/* 3G */
 138#define ACER_WMID3_GDS_WIMAX		(1<<7)	/* WiMAX */
 139#define ACER_WMID3_GDS_BLUETOOTH	(1<<11)	/* BT */
 140#define ACER_WMID3_GDS_RFBTN		(1<<14)	/* RF Button */
 141
 142#define ACER_WMID3_GDS_TOUCHPAD		(1<<1)	/* Touchpad */
 143
 144/* Hotkey Customized Setting and Acer Application Status.
 145 * Set Device Default Value and Report Acer Application Status.
 146 * When Acer Application starts, it will run this method to inform
 147 * BIOS/EC that Acer Application is on.
 148 * App Status
 149 *	Bit[0]: Launch Manager Status
 150 *	Bit[1]: ePM Status
 151 *	Bit[2]: Device Control Status
 152 *	Bit[3]: Acer Power Button Utility Status
 153 *	Bit[4]: RF Button Status
 154 *	Bit[5]: ODD PM Status
 155 *	Bit[6]: Device Default Value Control
 156 *	Bit[7]: Hall Sensor Application Status
 157 */
 158struct func_input_params {
 159	u8 function_num;        /* Function Number */
 160	u16 commun_devices;     /* Communication type devices default status */
 161	u16 devices;            /* Other type devices default status */
 162	u8 app_status;          /* Acer Device Status. LM, ePM, RF Button... */
 163	u8 app_mask;		/* Bit mask to app_status */
 164	u8 reserved;
 165} __attribute__((packed));
 166
 167struct func_return_value {
 168	u8 error_code;          /* Error Code */
 169	u8 ec_return_value;     /* EC Return Value */
 170	u16 reserved;
 171} __attribute__((packed));
 172
 173struct wmid3_gds_set_input_param {     /* Set Device Status input parameter */
 174	u8 function_num;        /* Function Number */
 175	u8 hotkey_number;       /* Hotkey Number */
 176	u16 devices;            /* Set Device */
 177	u8 volume_value;        /* Volume Value */
 178} __attribute__((packed));
 179
 180struct wmid3_gds_get_input_param {     /* Get Device Status input parameter */
 181	u8 function_num;	/* Function Number */
 182	u8 hotkey_number;	/* Hotkey Number */
 183	u16 devices;		/* Get Device */
 184} __attribute__((packed));
 185
 186struct wmid3_gds_return_value {	/* Get Device Status return value*/
 187	u8 error_code;		/* Error Code */
 188	u8 ec_return_value;	/* EC Return Value */
 189	u16 devices;		/* Current Device Status */
 190	u32 reserved;
 191} __attribute__((packed));
 192
 193struct hotkey_function_type_aa {
 194	u8 type;
 195	u8 length;
 196	u16 handle;
 197	u16 commun_func_bitmap;
 198	u16 application_func_bitmap;
 199	u16 media_func_bitmap;
 200	u16 display_func_bitmap;
 201	u16 others_func_bitmap;
 202	u8 commun_fn_key_number;
 203} __attribute__((packed));
 204
 205/*
 206 * Interface capability flags
 207 */
 208#define ACER_CAP_MAILLED		(1<<0)
 209#define ACER_CAP_WIRELESS		(1<<1)
 210#define ACER_CAP_BLUETOOTH		(1<<2)
 211#define ACER_CAP_BRIGHTNESS		(1<<3)
 212#define ACER_CAP_THREEG			(1<<4)
 213#define ACER_CAP_ACCEL			(1<<5)
 214#define ACER_CAP_RFBTN			(1<<6)
 215#define ACER_CAP_ANY			(0xFFFFFFFF)
 216
 217/*
 218 * Interface type flags
 219 */
 220enum interface_flags {
 221	ACER_AMW0,
 222	ACER_AMW0_V2,
 223	ACER_WMID,
 224	ACER_WMID_v2,
 225};
 226
 227#define ACER_DEFAULT_WIRELESS  0
 228#define ACER_DEFAULT_BLUETOOTH 0
 229#define ACER_DEFAULT_MAILLED   0
 230#define ACER_DEFAULT_THREEG    0
 231
 232static int max_brightness = 0xF;
 233
 234static int mailled = -1;
 235static int brightness = -1;
 236static int threeg = -1;
 237static int force_series;
 238static bool ec_raw_mode;
 239static bool has_type_aa;
 240static u16 commun_func_bitmap;
 241static u8 commun_fn_key_number;
 242
 243module_param(mailled, int, 0444);
 244module_param(brightness, int, 0444);
 245module_param(threeg, int, 0444);
 246module_param(force_series, int, 0444);
 247module_param(ec_raw_mode, bool, 0444);
 248MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 249MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 250MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
 251MODULE_PARM_DESC(force_series, "Force a different laptop series");
 252MODULE_PARM_DESC(ec_raw_mode, "Enable EC raw mode");
 253
 254struct acer_data {
 255	int mailled;
 256	int threeg;
 257	int brightness;
 258};
 259
 260struct acer_debug {
 261	struct dentry *root;
 262	u32 wmid_devices;
 263};
 264
 265static struct rfkill *wireless_rfkill;
 266static struct rfkill *bluetooth_rfkill;
 267static struct rfkill *threeg_rfkill;
 268static bool rfkill_inited;
 269
 270/* Each low-level interface must define at least some of the following */
 271struct wmi_interface {
 272	/* The WMI device type */
 273	u32 type;
 274
 275	/* The capabilities this interface provides */
 276	u32 capability;
 277
 278	/* Private data for the current interface */
 279	struct acer_data data;
 280
 281	/* debugfs entries associated with this interface */
 282	struct acer_debug debug;
 283};
 284
 285/* The static interface pointer, points to the currently detected interface */
 286static struct wmi_interface *interface;
 287
 288/*
 289 * Embedded Controller quirks
 290 * Some laptops require us to directly access the EC to either enable or query
 291 * features that are not available through WMI.
 292 */
 293
 294struct quirk_entry {
 295	u8 wireless;
 296	u8 mailled;
 297	s8 brightness;
 298	u8 bluetooth;
 299};
 300
 301static struct quirk_entry *quirks;
 302
 303static void __init set_quirks(void)
 304{
 305	if (!interface)
 306		return;
 307
 308	if (quirks->mailled)
 309		interface->capability |= ACER_CAP_MAILLED;
 310
 311	if (quirks->brightness)
 312		interface->capability |= ACER_CAP_BRIGHTNESS;
 313}
 314
 315static int __init dmi_matched(const struct dmi_system_id *dmi)
 316{
 317	quirks = dmi->driver_data;
 318	return 1;
 319}
 320
 321static struct quirk_entry quirk_unknown = {
 322};
 323
 324static struct quirk_entry quirk_acer_aspire_1520 = {
 325	.brightness = -1,
 326};
 327
 328static struct quirk_entry quirk_acer_travelmate_2490 = {
 329	.mailled = 1,
 330};
 331
 332/* This AMW0 laptop has no bluetooth */
 333static struct quirk_entry quirk_medion_md_98300 = {
 334	.wireless = 1,
 335};
 336
 337static struct quirk_entry quirk_fujitsu_amilo_li_1718 = {
 338	.wireless = 2,
 339};
 340
 341static struct quirk_entry quirk_lenovo_ideapad_s205 = {
 342	.wireless = 3,
 343};
 344
 345/* The Aspire One has a dummy ACPI-WMI interface - disable it */
 346static const struct dmi_system_id acer_blacklist[] __initconst = {
 347	{
 348		.ident = "Acer Aspire One (SSD)",
 349		.matches = {
 350			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 351			DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),
 352		},
 353	},
 354	{
 355		.ident = "Acer Aspire One (HDD)",
 356		.matches = {
 357			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 358			DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 359		},
 360	},
 361	{}
 362};
 363
 364static const struct dmi_system_id amw0_whitelist[] __initconst = {
 365	{
 366		.ident = "Acer",
 367		.matches = {
 368			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 369		},
 370	},
 371	{
 372		.ident = "Gateway",
 373		.matches = {
 374			DMI_MATCH(DMI_SYS_VENDOR, "Gateway"),
 375		},
 376	},
 377	{
 378		.ident = "Packard Bell",
 379		.matches = {
 380			DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
 381		},
 382	},
 383	{}
 384};
 385
 386/*
 387 * This quirk table is only for Acer/Gateway/Packard Bell family
 388 * that those machines are supported by acer-wmi driver.
 389 */
 390static const struct dmi_system_id acer_quirks[] __initconst = {
 391	{
 392		.callback = dmi_matched,
 393		.ident = "Acer Aspire 1360",
 394		.matches = {
 395			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 396			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
 397		},
 398		.driver_data = &quirk_acer_aspire_1520,
 399	},
 400	{
 401		.callback = dmi_matched,
 402		.ident = "Acer Aspire 1520",
 403		.matches = {
 404			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 405			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1520"),
 406		},
 407		.driver_data = &quirk_acer_aspire_1520,
 408	},
 409	{
 410		.callback = dmi_matched,
 411		.ident = "Acer Aspire 3100",
 412		.matches = {
 413			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 414			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
 415		},
 416		.driver_data = &quirk_acer_travelmate_2490,
 417	},
 418	{
 419		.callback = dmi_matched,
 420		.ident = "Acer Aspire 3610",
 421		.matches = {
 422			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 423			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3610"),
 424		},
 425		.driver_data = &quirk_acer_travelmate_2490,
 426	},
 427	{
 428		.callback = dmi_matched,
 429		.ident = "Acer Aspire 5100",
 430		.matches = {
 431			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 432			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 433		},
 434		.driver_data = &quirk_acer_travelmate_2490,
 435	},
 436	{
 437		.callback = dmi_matched,
 438		.ident = "Acer Aspire 5610",
 439		.matches = {
 440			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 441			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 442		},
 443		.driver_data = &quirk_acer_travelmate_2490,
 444	},
 445	{
 446		.callback = dmi_matched,
 447		.ident = "Acer Aspire 5630",
 448		.matches = {
 449			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 450			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
 451		},
 452		.driver_data = &quirk_acer_travelmate_2490,
 453	},
 454	{
 455		.callback = dmi_matched,
 456		.ident = "Acer Aspire 5650",
 457		.matches = {
 458			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 459			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
 460		},
 461		.driver_data = &quirk_acer_travelmate_2490,
 462	},
 463	{
 464		.callback = dmi_matched,
 465		.ident = "Acer Aspire 5680",
 466		.matches = {
 467			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 468			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
 469		},
 470		.driver_data = &quirk_acer_travelmate_2490,
 471	},
 472	{
 473		.callback = dmi_matched,
 474		.ident = "Acer Aspire 9110",
 475		.matches = {
 476			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 477			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
 478		},
 479		.driver_data = &quirk_acer_travelmate_2490,
 480	},
 481	{
 482		.callback = dmi_matched,
 483		.ident = "Acer TravelMate 2490",
 484		.matches = {
 485			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 486			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
 487		},
 488		.driver_data = &quirk_acer_travelmate_2490,
 489	},
 490	{
 491		.callback = dmi_matched,
 492		.ident = "Acer TravelMate 4200",
 493		.matches = {
 494			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 495			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4200"),
 496		},
 497		.driver_data = &quirk_acer_travelmate_2490,
 498	},
 499	{}
 500};
 501
 502/*
 503 * This quirk list is for those non-acer machines that have AMW0_GUID1
 504 * but supported by acer-wmi in past days. Keeping this quirk list here
 505 * is only for backward compatible. Please do not add new machine to
 506 * here anymore. Those non-acer machines should be supported by
 507 * appropriate wmi drivers.
 508 */
 509static const struct dmi_system_id non_acer_quirks[] __initconst = {
 510	{
 511		.callback = dmi_matched,
 512		.ident = "Fujitsu Siemens Amilo Li 1718",
 513		.matches = {
 514			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 515			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Li 1718"),
 516		},
 517		.driver_data = &quirk_fujitsu_amilo_li_1718,
 518	},
 519	{
 520		.callback = dmi_matched,
 521		.ident = "Medion MD 98300",
 522		.matches = {
 523			DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
 524			DMI_MATCH(DMI_PRODUCT_NAME, "WAM2030"),
 525		},
 526		.driver_data = &quirk_medion_md_98300,
 527	},
 528	{
 529		.callback = dmi_matched,
 530		.ident = "Lenovo Ideapad S205",
 531		.matches = {
 532			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 533			DMI_MATCH(DMI_PRODUCT_NAME, "10382LG"),
 534		},
 535		.driver_data = &quirk_lenovo_ideapad_s205,
 536	},
 537	{
 538		.callback = dmi_matched,
 539		.ident = "Lenovo Ideapad S205 (Brazos)",
 540		.matches = {
 541			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 542			DMI_MATCH(DMI_PRODUCT_NAME, "Brazos"),
 543		},
 544		.driver_data = &quirk_lenovo_ideapad_s205,
 545	},
 546	{
 547		.callback = dmi_matched,
 548		.ident = "Lenovo 3000 N200",
 549		.matches = {
 550			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 551			DMI_MATCH(DMI_PRODUCT_NAME, "0687A31"),
 552		},
 553		.driver_data = &quirk_fujitsu_amilo_li_1718,
 554	},
 555	{
 556		.callback = dmi_matched,
 557		.ident = "Lenovo Ideapad S205-10382JG",
 558		.matches = {
 559			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 560			DMI_MATCH(DMI_PRODUCT_NAME, "10382JG"),
 561		},
 562		.driver_data = &quirk_lenovo_ideapad_s205,
 563	},
 564	{
 565		.callback = dmi_matched,
 566		.ident = "Lenovo Ideapad S205-1038DPG",
 567		.matches = {
 568			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 569			DMI_MATCH(DMI_PRODUCT_NAME, "1038DPG"),
 570		},
 571		.driver_data = &quirk_lenovo_ideapad_s205,
 572	},
 573	{}
 574};
 575
 576static int __init
 577video_set_backlight_video_vendor(const struct dmi_system_id *d)
 578{
 579	interface->capability &= ~ACER_CAP_BRIGHTNESS;
 580	pr_info("Brightness must be controlled by generic video driver\n");
 581	return 0;
 582}
 583
 584static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
 585	{
 586		.callback = video_set_backlight_video_vendor,
 587		.ident = "Acer TravelMate 4750",
 588		.matches = {
 589			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 590			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4750"),
 591		},
 592	},
 593	{
 594		.callback = video_set_backlight_video_vendor,
 595		.ident = "Acer Extensa 5235",
 596		.matches = {
 597			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 598			DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5235"),
 599		},
 600	},
 601	{
 602		.callback = video_set_backlight_video_vendor,
 603		.ident = "Acer TravelMate 5760",
 604		.matches = {
 605			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 606			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5760"),
 607		},
 608	},
 609	{
 610		.callback = video_set_backlight_video_vendor,
 611		.ident = "Acer Aspire 5750",
 612		.matches = {
 613			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 614			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5750"),
 615		},
 616	},
 617	{
 618		.callback = video_set_backlight_video_vendor,
 619		.ident = "Acer Aspire 5741",
 620		.matches = {
 621			DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 622			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
 623		},
 624	},
 625	{
 626		/*
 627		 * Note no video_set_backlight_video_vendor, we must use the
 628		 * acer interface, as there is no native backlight interface.
 629		 */
 630		.ident = "Acer KAV80",
 631		.matches = {
 632			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 633			DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
 634		},
 635	},
 636	{}
 637};
 638
 639/* Find which quirks are needed for a particular vendor/ model pair */
 640static void __init find_quirks(void)
 641{
 642	if (!force_series) {
 643		dmi_check_system(acer_quirks);
 644		dmi_check_system(non_acer_quirks);
 645	} else if (force_series == 2490) {
 646		quirks = &quirk_acer_travelmate_2490;
 647	}
 648
 649	if (quirks == NULL)
 650		quirks = &quirk_unknown;
 651
 652	set_quirks();
 653}
 654
 655/*
 656 * General interface convenience methods
 657 */
 658
 659static bool has_cap(u32 cap)
 660{
 661	return interface->capability & cap;
 662}
 663
 664/*
 665 * AMW0 (V1) interface
 666 */
 667struct wmab_args {
 668	u32 eax;
 669	u32 ebx;
 670	u32 ecx;
 671	u32 edx;
 672};
 673
 674struct wmab_ret {
 675	u32 eax;
 676	u32 ebx;
 677	u32 ecx;
 678	u32 edx;
 679	u32 eex;
 680};
 681
 682static acpi_status wmab_execute(struct wmab_args *regbuf,
 683struct acpi_buffer *result)
 684{
 685	struct acpi_buffer input;
 686	acpi_status status;
 687	input.length = sizeof(struct wmab_args);
 688	input.pointer = (u8 *)regbuf;
 689
 690	status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 691
 692	return status;
 693}
 694
 695static acpi_status AMW0_get_u32(u32 *value, u32 cap)
 696{
 697	int err;
 698	u8 result;
 699
 700	switch (cap) {
 701	case ACER_CAP_MAILLED:
 702		switch (quirks->mailled) {
 703		default:
 704			err = ec_read(0xA, &result);
 705			if (err)
 706				return AE_ERROR;
 707			*value = (result >> 7) & 0x1;
 708			return AE_OK;
 709		}
 710		break;
 711	case ACER_CAP_WIRELESS:
 712		switch (quirks->wireless) {
 713		case 1:
 714			err = ec_read(0x7B, &result);
 715			if (err)
 716				return AE_ERROR;
 717			*value = result & 0x1;
 718			return AE_OK;
 719		case 2:
 720			err = ec_read(0x71, &result);
 721			if (err)
 722				return AE_ERROR;
 723			*value = result & 0x1;
 724			return AE_OK;
 725		case 3:
 726			err = ec_read(0x78, &result);
 727			if (err)
 728				return AE_ERROR;
 729			*value = result & 0x1;
 730			return AE_OK;
 731		default:
 732			err = ec_read(0xA, &result);
 733			if (err)
 734				return AE_ERROR;
 735			*value = (result >> 2) & 0x1;
 736			return AE_OK;
 737		}
 738		break;
 739	case ACER_CAP_BLUETOOTH:
 740		switch (quirks->bluetooth) {
 741		default:
 742			err = ec_read(0xA, &result);
 743			if (err)
 744				return AE_ERROR;
 745			*value = (result >> 4) & 0x1;
 746			return AE_OK;
 747		}
 748		break;
 749	case ACER_CAP_BRIGHTNESS:
 750		switch (quirks->brightness) {
 751		default:
 752			err = ec_read(0x83, &result);
 753			if (err)
 754				return AE_ERROR;
 755			*value = result;
 756			return AE_OK;
 757		}
 758		break;
 759	default:
 760		return AE_ERROR;
 761	}
 762	return AE_OK;
 763}
 764
 765static acpi_status AMW0_set_u32(u32 value, u32 cap)
 766{
 767	struct wmab_args args;
 768
 769	args.eax = ACER_AMW0_WRITE;
 770	args.ebx = value ? (1<<8) : 0;
 771	args.ecx = args.edx = 0;
 772
 773	switch (cap) {
 774	case ACER_CAP_MAILLED:
 775		if (value > 1)
 776			return AE_BAD_PARAMETER;
 777		args.ebx |= ACER_AMW0_MAILLED_MASK;
 778		break;
 779	case ACER_CAP_WIRELESS:
 780		if (value > 1)
 781			return AE_BAD_PARAMETER;
 782		args.ebx |= ACER_AMW0_WIRELESS_MASK;
 783		break;
 784	case ACER_CAP_BLUETOOTH:
 785		if (value > 1)
 786			return AE_BAD_PARAMETER;
 787		args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 788		break;
 789	case ACER_CAP_BRIGHTNESS:
 790		if (value > max_brightness)
 791			return AE_BAD_PARAMETER;
 792		switch (quirks->brightness) {
 793		default:
 794			return ec_write(0x83, value);
 795			break;
 796		}
 797	default:
 798		return AE_ERROR;
 799	}
 800
 801	/* Actually do the set */
 802	return wmab_execute(&args, NULL);
 803}
 804
 805static acpi_status __init AMW0_find_mailled(void)
 806{
 807	struct wmab_args args;
 808	struct wmab_ret ret;
 809	acpi_status status = AE_OK;
 810	struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 811	union acpi_object *obj;
 812
 813	args.eax = 0x86;
 814	args.ebx = args.ecx = args.edx = 0;
 815
 816	status = wmab_execute(&args, &out);
 817	if (ACPI_FAILURE(status))
 818		return status;
 819
 820	obj = (union acpi_object *) out.pointer;
 821	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 822	obj->buffer.length == sizeof(struct wmab_ret)) {
 823		ret = *((struct wmab_ret *) obj->buffer.pointer);
 824	} else {
 825		kfree(out.pointer);
 826		return AE_ERROR;
 827	}
 828
 829	if (ret.eex & 0x1)
 830		interface->capability |= ACER_CAP_MAILLED;
 831
 832	kfree(out.pointer);
 833
 834	return AE_OK;
 835}
 836
 837static const struct acpi_device_id norfkill_ids[] __initconst = {
 838	{ "VPC2004", 0},
 839	{ "IBM0068", 0},
 840	{ "LEN0068", 0},
 841	{ "SNY5001", 0},	/* sony-laptop in charge */
 842	{ "HPQ6601", 0},
 843	{ "", 0},
 844};
 845
 846static int __init AMW0_set_cap_acpi_check_device(void)
 847{
 848	const struct acpi_device_id *id;
 849
 850	for (id = norfkill_ids; id->id[0]; id++)
 851		if (acpi_dev_found(id->id))
 852			return true;
 853
 854	return false;
 855}
 856
 857static acpi_status __init AMW0_set_capabilities(void)
 858{
 859	struct wmab_args args;
 860	struct wmab_ret ret;
 861	acpi_status status;
 862	struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
 863	union acpi_object *obj;
 864
 865	/*
 866	 * On laptops with this strange GUID (non Acer), normal probing doesn't
 867	 * work.
 868	 */
 869	if (wmi_has_guid(AMW0_GUID2)) {
 870		if ((quirks != &quirk_unknown) ||
 871		    !AMW0_set_cap_acpi_check_device())
 872			interface->capability |= ACER_CAP_WIRELESS;
 873		return AE_OK;
 874	}
 875
 876	args.eax = ACER_AMW0_WRITE;
 877	args.ecx = args.edx = 0;
 878
 879	args.ebx = 0xa2 << 8;
 880	args.ebx |= ACER_AMW0_WIRELESS_MASK;
 881
 882	status = wmab_execute(&args, &out);
 883	if (ACPI_FAILURE(status))
 884		return status;
 885
 886	obj = out.pointer;
 887	if (obj && obj->type == ACPI_TYPE_BUFFER &&
 888	obj->buffer.length == sizeof(struct wmab_ret)) {
 889		ret = *((struct wmab_ret *) obj->buffer.pointer);
 890	} else {
 891		status = AE_ERROR;
 892		goto out;
 893	}
 894
 895	if (ret.eax & 0x1)
 896		interface->capability |= ACER_CAP_WIRELESS;
 897
 898	args.ebx = 2 << 8;
 899	args.ebx |= ACER_AMW0_BLUETOOTH_MASK;
 900
 901	/*
 902	 * It's ok to use existing buffer for next wmab_execute call.
 903	 * But we need to kfree(out.pointer) if next wmab_execute fail.
 904	 */
 905	status = wmab_execute(&args, &out);
 906	if (ACPI_FAILURE(status))
 907		goto out;
 908
 909	obj = (union acpi_object *) out.pointer;
 910	if (obj && obj->type == ACPI_TYPE_BUFFER
 911	&& obj->buffer.length == sizeof(struct wmab_ret)) {
 912		ret = *((struct wmab_ret *) obj->buffer.pointer);
 913	} else {
 914		status = AE_ERROR;
 915		goto out;
 916	}
 917
 918	if (ret.eax & 0x1)
 919		interface->capability |= ACER_CAP_BLUETOOTH;
 920
 921	/*
 922	 * This appears to be safe to enable, since all Wistron based laptops
 923	 * appear to use the same EC register for brightness, even if they
 924	 * differ for wireless, etc
 925	 */
 926	if (quirks->brightness >= 0)
 927		interface->capability |= ACER_CAP_BRIGHTNESS;
 928
 929	status = AE_OK;
 930out:
 931	kfree(out.pointer);
 932	return status;
 933}
 934
 935static struct wmi_interface AMW0_interface = {
 936	.type = ACER_AMW0,
 937};
 938
 939static struct wmi_interface AMW0_V2_interface = {
 940	.type = ACER_AMW0_V2,
 941};
 942
 943/*
 944 * New interface (The WMID interface)
 945 */
 946static acpi_status
 947WMI_execute_u32(u32 method_id, u32 in, u32 *out)
 948{
 949	struct acpi_buffer input = { (acpi_size) sizeof(u32), (void *)(&in) };
 950	struct acpi_buffer result = { ACPI_ALLOCATE_BUFFER, NULL };
 951	union acpi_object *obj;
 952	u32 tmp = 0;
 953	acpi_status status;
 954
 955	status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 956
 957	if (ACPI_FAILURE(status))
 958		return status;
 959
 960	obj = (union acpi_object *) result.pointer;
 961	if (obj) {
 962		if (obj->type == ACPI_TYPE_BUFFER &&
 963			(obj->buffer.length == sizeof(u32) ||
 964			obj->buffer.length == sizeof(u64))) {
 965			tmp = *((u32 *) obj->buffer.pointer);
 966		} else if (obj->type == ACPI_TYPE_INTEGER) {
 967			tmp = (u32) obj->integer.value;
 968		}
 969	}
 970
 971	if (out)
 972		*out = tmp;
 973
 974	kfree(result.pointer);
 975
 976	return status;
 977}
 978
 979static acpi_status WMID_get_u32(u32 *value, u32 cap)
 980{
 981	acpi_status status;
 982	u8 tmp;
 983	u32 result, method_id = 0;
 984
 985	switch (cap) {
 986	case ACER_CAP_WIRELESS:
 987		method_id = ACER_WMID_GET_WIRELESS_METHODID;
 988		break;
 989	case ACER_CAP_BLUETOOTH:
 990		method_id = ACER_WMID_GET_BLUETOOTH_METHODID;
 991		break;
 992	case ACER_CAP_BRIGHTNESS:
 993		method_id = ACER_WMID_GET_BRIGHTNESS_METHODID;
 994		break;
 995	case ACER_CAP_THREEG:
 996		method_id = ACER_WMID_GET_THREEG_METHODID;
 997		break;
 998	case ACER_CAP_MAILLED:
 999		if (quirks->mailled == 1) {
1000			ec_read(0x9f, &tmp);
1001			*value = tmp & 0x1;
1002			return 0;
1003		}
1004		/* fall through */
1005	default:
1006		return AE_ERROR;
1007	}
1008	status = WMI_execute_u32(method_id, 0, &result);
1009
1010	if (ACPI_SUCCESS(status))
1011		*value = (u8)result;
1012
1013	return status;
1014}
1015
1016static acpi_status WMID_set_u32(u32 value, u32 cap)
1017{
1018	u32 method_id = 0;
1019	char param;
1020
1021	switch (cap) {
1022	case ACER_CAP_BRIGHTNESS:
1023		if (value > max_brightness)
1024			return AE_BAD_PARAMETER;
1025		method_id = ACER_WMID_SET_BRIGHTNESS_METHODID;
1026		break;
1027	case ACER_CAP_WIRELESS:
1028		if (value > 1)
1029			return AE_BAD_PARAMETER;
1030		method_id = ACER_WMID_SET_WIRELESS_METHODID;
1031		break;
1032	case ACER_CAP_BLUETOOTH:
1033		if (value > 1)
1034			return AE_BAD_PARAMETER;
1035		method_id = ACER_WMID_SET_BLUETOOTH_METHODID;
1036		break;
1037	case ACER_CAP_THREEG:
1038		if (value > 1)
1039			return AE_BAD_PARAMETER;
1040		method_id = ACER_WMID_SET_THREEG_METHODID;
1041		break;
1042	case ACER_CAP_MAILLED:
1043		if (value > 1)
1044			return AE_BAD_PARAMETER;
1045		if (quirks->mailled == 1) {
1046			param = value ? 0x92 : 0x93;
1047			i8042_lock_chip();
1048			i8042_command(&param, 0x1059);
1049			i8042_unlock_chip();
1050			return 0;
1051		}
1052		break;
1053	default:
1054		return AE_ERROR;
1055	}
1056	return WMI_execute_u32(method_id, (u32)value, NULL);
1057}
1058
1059static acpi_status wmid3_get_device_status(u32 *value, u16 device)
1060{
1061	struct wmid3_gds_return_value return_value;
1062	acpi_status status;
1063	union acpi_object *obj;
1064	struct wmid3_gds_get_input_param params = {
1065		.function_num = 0x1,
1066		.hotkey_number = commun_fn_key_number,
1067		.devices = device,
1068	};
1069	struct acpi_buffer input = {
1070		sizeof(struct wmid3_gds_get_input_param),
1071		&params
1072	};
1073	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1074
1075	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
1076	if (ACPI_FAILURE(status))
1077		return status;
1078
1079	obj = output.pointer;
1080
1081	if (!obj)
1082		return AE_ERROR;
1083	else if (obj->type != ACPI_TYPE_BUFFER) {
1084		kfree(obj);
1085		return AE_ERROR;
1086	}
1087	if (obj->buffer.length != 8) {
1088		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1089		kfree(obj);
1090		return AE_ERROR;
1091	}
1092
1093	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1094	kfree(obj);
1095
1096	if (return_value.error_code || return_value.ec_return_value)
1097		pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
1098			device,
1099			return_value.error_code,
1100			return_value.ec_return_value);
1101	else
1102		*value = !!(return_value.devices & device);
1103
1104	return status;
1105}
1106
1107static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
1108{
1109	u16 device;
1110
1111	switch (cap) {
1112	case ACER_CAP_WIRELESS:
1113		device = ACER_WMID3_GDS_WIRELESS;
1114		break;
1115	case ACER_CAP_BLUETOOTH:
1116		device = ACER_WMID3_GDS_BLUETOOTH;
1117		break;
1118	case ACER_CAP_THREEG:
1119		device = ACER_WMID3_GDS_THREEG;
1120		break;
1121	default:
1122		return AE_ERROR;
1123	}
1124	return wmid3_get_device_status(value, device);
1125}
1126
1127static acpi_status wmid3_set_device_status(u32 value, u16 device)
1128{
1129	struct wmid3_gds_return_value return_value;
1130	acpi_status status;
1131	union acpi_object *obj;
1132	u16 devices;
1133	struct wmid3_gds_get_input_param get_params = {
1134		.function_num = 0x1,
1135		.hotkey_number = commun_fn_key_number,
1136		.devices = commun_func_bitmap,
1137	};
1138	struct acpi_buffer get_input = {
1139		sizeof(struct wmid3_gds_get_input_param),
1140		&get_params
1141	};
1142	struct wmid3_gds_set_input_param set_params = {
1143		.function_num = 0x2,
1144		.hotkey_number = commun_fn_key_number,
1145		.devices = commun_func_bitmap,
1146	};
1147	struct acpi_buffer set_input = {
1148		sizeof(struct wmid3_gds_set_input_param),
1149		&set_params
1150	};
1151	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1152	struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
1153
1154	status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &get_input, &output);
1155	if (ACPI_FAILURE(status))
1156		return status;
1157
1158	obj = output.pointer;
1159
1160	if (!obj)
1161		return AE_ERROR;
1162	else if (obj->type != ACPI_TYPE_BUFFER) {
1163		kfree(obj);
1164		return AE_ERROR;
1165	}
1166	if (obj->buffer.length != 8) {
1167		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1168		kfree(obj);
1169		return AE_ERROR;
1170	}
1171
1172	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1173	kfree(obj);
1174
1175	if (return_value.error_code || return_value.ec_return_value) {
1176		pr_warn("Get Current Device Status failed: 0x%x - 0x%x\n",
1177			return_value.error_code,
1178			return_value.ec_return_value);
1179		return status;
1180	}
1181
1182	devices = return_value.devices;
1183	set_params.devices = (value) ? (devices | device) : (devices & ~device);
1184
1185	status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &set_input, &output2);
1186	if (ACPI_FAILURE(status))
1187		return status;
1188
1189	obj = output2.pointer;
1190
1191	if (!obj)
1192		return AE_ERROR;
1193	else if (obj->type != ACPI_TYPE_BUFFER) {
1194		kfree(obj);
1195		return AE_ERROR;
1196	}
1197	if (obj->buffer.length != 4) {
1198		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1199		kfree(obj);
1200		return AE_ERROR;
1201	}
1202
1203	return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
1204	kfree(obj);
1205
1206	if (return_value.error_code || return_value.ec_return_value)
1207		pr_warn("Set Device Status failed: 0x%x - 0x%x\n",
1208			return_value.error_code,
1209			return_value.ec_return_value);
1210
1211	return status;
1212}
1213
1214static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
1215{
1216	u16 device;
1217
1218	switch (cap) {
1219	case ACER_CAP_WIRELESS:
1220		device = ACER_WMID3_GDS_WIRELESS;
1221		break;
1222	case ACER_CAP_BLUETOOTH:
1223		device = ACER_WMID3_GDS_BLUETOOTH;
1224		break;
1225	case ACER_CAP_THREEG:
1226		device = ACER_WMID3_GDS_THREEG;
1227		break;
1228	default:
1229		return AE_ERROR;
1230	}
1231	return wmid3_set_device_status(value, device);
1232}
1233
1234static void __init type_aa_dmi_decode(const struct dmi_header *header, void *d)
1235{
1236	struct hotkey_function_type_aa *type_aa;
1237
1238	/* We are looking for OEM-specific Type AAh */
1239	if (header->type != 0xAA)
1240		return;
1241
1242	has_type_aa = true;
1243	type_aa = (struct hotkey_function_type_aa *) header;
1244
1245	pr_info("Function bitmap for Communication Button: 0x%x\n",
1246		type_aa->commun_func_bitmap);
1247	commun_func_bitmap = type_aa->commun_func_bitmap;
1248
1249	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_WIRELESS)
1250		interface->capability |= ACER_CAP_WIRELESS;
1251	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_THREEG)
1252		interface->capability |= ACER_CAP_THREEG;
1253	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_BLUETOOTH)
1254		interface->capability |= ACER_CAP_BLUETOOTH;
1255	if (type_aa->commun_func_bitmap & ACER_WMID3_GDS_RFBTN) {
1256		interface->capability |= ACER_CAP_RFBTN;
1257		commun_func_bitmap &= ~ACER_WMID3_GDS_RFBTN;
1258	}
1259
1260	commun_fn_key_number = type_aa->commun_fn_key_number;
1261}
1262
1263static acpi_status __init WMID_set_capabilities(void)
1264{
1265	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1266	union acpi_object *obj;
1267	acpi_status status;
1268	u32 devices;
1269
1270	status = wmi_query_block(WMID_GUID2, 0, &out);
1271	if (ACPI_FAILURE(status))
1272		return status;
1273
1274	obj = (union acpi_object *) out.pointer;
1275	if (obj) {
1276		if (obj->type == ACPI_TYPE_BUFFER &&
1277			(obj->buffer.length == sizeof(u32) ||
1278			obj->buffer.length == sizeof(u64))) {
1279			devices = *((u32 *) obj->buffer.pointer);
1280		} else if (obj->type == ACPI_TYPE_INTEGER) {
1281			devices = (u32) obj->integer.value;
1282		} else {
1283			kfree(out.pointer);
1284			return AE_ERROR;
1285		}
1286	} else {
1287		kfree(out.pointer);
1288		return AE_ERROR;
1289	}
1290
1291	pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
1292	if (devices & 0x07)
1293		interface->capability |= ACER_CAP_WIRELESS;
1294	if (devices & 0x40)
1295		interface->capability |= ACER_CAP_THREEG;
1296	if (devices & 0x10)
1297		interface->capability |= ACER_CAP_BLUETOOTH;
1298
1299	if (!(devices & 0x20))
1300		max_brightness = 0x9;
1301
1302	kfree(out.pointer);
1303	return status;
1304}
1305
1306static struct wmi_interface wmid_interface = {
1307	.type = ACER_WMID,
1308};
1309
1310static struct wmi_interface wmid_v2_interface = {
1311	.type = ACER_WMID_v2,
1312};
1313
1314/*
1315 * Generic Device (interface-independent)
1316 */
1317
1318static acpi_status get_u32(u32 *value, u32 cap)
1319{
1320	acpi_status status = AE_ERROR;
1321
1322	switch (interface->type) {
1323	case ACER_AMW0:
1324		status = AMW0_get_u32(value, cap);
1325		break;
1326	case ACER_AMW0_V2:
1327		if (cap == ACER_CAP_MAILLED) {
1328			status = AMW0_get_u32(value, cap);
1329			break;
1330		}
1331		/* fall through */
1332	case ACER_WMID:
1333		status = WMID_get_u32(value, cap);
1334		break;
1335	case ACER_WMID_v2:
1336		if (cap & (ACER_CAP_WIRELESS |
1337			   ACER_CAP_BLUETOOTH |
1338			   ACER_CAP_THREEG))
1339			status = wmid_v2_get_u32(value, cap);
1340		else if (wmi_has_guid(WMID_GUID2))
1341			status = WMID_get_u32(value, cap);
1342		break;
1343	}
1344
1345	return status;
1346}
1347
1348static acpi_status set_u32(u32 value, u32 cap)
1349{
1350	acpi_status status;
1351
1352	if (interface->capability & cap) {
1353		switch (interface->type) {
1354		case ACER_AMW0:
1355			return AMW0_set_u32(value, cap);
1356		case ACER_AMW0_V2:
1357			if (cap == ACER_CAP_MAILLED)
1358				return AMW0_set_u32(value, cap);
1359
1360			/*
1361			 * On some models, some WMID methods don't toggle
1362			 * properly. For those cases, we want to run the AMW0
1363			 * method afterwards to be certain we've really toggled
1364			 * the device state.
1365			 */
1366			if (cap == ACER_CAP_WIRELESS ||
1367				cap == ACER_CAP_BLUETOOTH) {
1368				status = WMID_set_u32(value, cap);
1369				if (ACPI_FAILURE(status))
1370					return status;
1371
1372				return AMW0_set_u32(value, cap);
1373			}
1374			/* fall through */
1375		case ACER_WMID:
1376			return WMID_set_u32(value, cap);
1377		case ACER_WMID_v2:
1378			if (cap & (ACER_CAP_WIRELESS |
1379				   ACER_CAP_BLUETOOTH |
1380				   ACER_CAP_THREEG))
1381				return wmid_v2_set_u32(value, cap);
1382			else if (wmi_has_guid(WMID_GUID2))
1383				return WMID_set_u32(value, cap);
1384			/* fall through */
1385		default:
1386			return AE_BAD_PARAMETER;
1387		}
1388	}
1389	return AE_BAD_PARAMETER;
1390}
1391
1392static void __init acer_commandline_init(void)
1393{
1394	/*
1395	 * These will all fail silently if the value given is invalid, or the
1396	 * capability isn't available on the given interface
1397	 */
1398	if (mailled >= 0)
1399		set_u32(mailled, ACER_CAP_MAILLED);
1400	if (!has_type_aa && threeg >= 0)
1401		set_u32(threeg, ACER_CAP_THREEG);
1402	if (brightness >= 0)
1403		set_u32(brightness, ACER_CAP_BRIGHTNESS);
1404}
1405
1406/*
1407 * LED device (Mail LED only, no other LEDs known yet)
1408 */
1409static void mail_led_set(struct led_classdev *led_cdev,
1410enum led_brightness value)
1411{
1412	set_u32(value, ACER_CAP_MAILLED);
1413}
1414
1415static struct led_classdev mail_led = {
1416	.name = "acer-wmi::mail",
1417	.brightness_set = mail_led_set,
1418};
1419
1420static int acer_led_init(struct device *dev)
1421{
1422	return led_classdev_register(dev, &mail_led);
1423}
1424
1425static void acer_led_exit(void)
1426{
1427	set_u32(LED_OFF, ACER_CAP_MAILLED);
1428	led_classdev_unregister(&mail_led);
1429}
1430
1431/*
1432 * Backlight device
1433 */
1434static struct backlight_device *acer_backlight_device;
1435
1436static int read_brightness(struct backlight_device *bd)
1437{
1438	u32 value;
1439	get_u32(&value, ACER_CAP_BRIGHTNESS);
1440	return value;
1441}
1442
1443static int update_bl_status(struct backlight_device *bd)
1444{
1445	int intensity = bd->props.brightness;
1446
1447	if (bd->props.power != FB_BLANK_UNBLANK)
1448		intensity = 0;
1449	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
1450		intensity = 0;
1451
1452	set_u32(intensity, ACER_CAP_BRIGHTNESS);
1453
1454	return 0;
1455}
1456
1457static const struct backlight_ops acer_bl_ops = {
1458	.get_brightness = read_brightness,
1459	.update_status = update_bl_status,
1460};
1461
1462static int acer_backlight_init(struct device *dev)
1463{
1464	struct backlight_properties props;
1465	struct backlight_device *bd;
1466
1467	memset(&props, 0, sizeof(struct backlight_properties));
1468	props.type = BACKLIGHT_PLATFORM;
1469	props.max_brightness = max_brightness;
1470	bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
1471				       &props);
1472	if (IS_ERR(bd)) {
1473		pr_err("Could not register Acer backlight device\n");
1474		acer_backlight_device = NULL;
1475		return PTR_ERR(bd);
1476	}
1477
1478	acer_backlight_device = bd;
1479
1480	bd->props.power = FB_BLANK_UNBLANK;
1481	bd->props.brightness = read_brightness(bd);
1482	backlight_update_status(bd);
1483	return 0;
1484}
1485
1486static void acer_backlight_exit(void)
1487{
1488	backlight_device_unregister(acer_backlight_device);
1489}
1490
1491/*
1492 * Accelerometer device
1493 */
1494static acpi_handle gsensor_handle;
1495
1496static int acer_gsensor_init(void)
1497{
1498	acpi_status status;
1499	struct acpi_buffer output;
1500	union acpi_object out_obj;
1501
1502	output.length = sizeof(out_obj);
1503	output.pointer = &out_obj;
1504	status = acpi_evaluate_object(gsensor_handle, "_INI", NULL, &output);
1505	if (ACPI_FAILURE(status))
1506		return -1;
1507
1508	return 0;
1509}
1510
1511static int acer_gsensor_open(struct input_dev *input)
1512{
1513	return acer_gsensor_init();
1514}
1515
1516static int acer_gsensor_event(void)
1517{
1518	acpi_status status;
1519	struct acpi_buffer output;
1520	union acpi_object out_obj[5];
1521
1522	if (!has_cap(ACER_CAP_ACCEL))
1523		return -1;
1524
1525	output.length = sizeof(out_obj);
1526	output.pointer = out_obj;
1527
1528	status = acpi_evaluate_object(gsensor_handle, "RDVL", NULL, &output);
1529	if (ACPI_FAILURE(status))
1530		return -1;
1531
1532	if (out_obj->package.count != 4)
1533		return -1;
1534
1535	input_report_abs(acer_wmi_accel_dev, ABS_X,
1536		(s16)out_obj->package.elements[0].integer.value);
1537	input_report_abs(acer_wmi_accel_dev, ABS_Y,
1538		(s16)out_obj->package.elements[1].integer.value);
1539	input_report_abs(acer_wmi_accel_dev, ABS_Z,
1540		(s16)out_obj->package.elements[2].integer.value);
1541	input_sync(acer_wmi_accel_dev);
1542	return 0;
1543}
1544
1545/*
1546 * Rfkill devices
1547 */
1548static void acer_rfkill_update(struct work_struct *ignored);
1549static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
1550static void acer_rfkill_update(struct work_struct *ignored)
1551{
1552	u32 state;
1553	acpi_status status;
1554
1555	if (has_cap(ACER_CAP_WIRELESS)) {
1556		status = get_u32(&state, ACER_CAP_WIRELESS);
1557		if (ACPI_SUCCESS(status)) {
1558			if (quirks->wireless == 3)
1559				rfkill_set_hw_state(wireless_rfkill, !state);
1560			else
1561				rfkill_set_sw_state(wireless_rfkill, !state);
1562		}
1563	}
1564
1565	if (has_cap(ACER_CAP_BLUETOOTH)) {
1566		status = get_u32(&state, ACER_CAP_BLUETOOTH);
1567		if (ACPI_SUCCESS(status))
1568			rfkill_set_sw_state(bluetooth_rfkill, !state);
1569	}
1570
1571	if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
1572		status = get_u32(&state, ACER_WMID3_GDS_THREEG);
1573		if (ACPI_SUCCESS(status))
1574			rfkill_set_sw_state(threeg_rfkill, !state);
1575	}
1576
1577	schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
1578}
1579
1580static int acer_rfkill_set(void *data, bool blocked)
1581{
1582	acpi_status status;
1583	u32 cap = (unsigned long)data;
1584
1585	if (rfkill_inited) {
1586		status = set_u32(!blocked, cap);
1587		if (ACPI_FAILURE(status))
1588			return -ENODEV;
1589	}
1590
1591	return 0;
1592}
1593
1594static const struct rfkill_ops acer_rfkill_ops = {
1595	.set_block = acer_rfkill_set,
1596};
1597
1598static struct rfkill *acer_rfkill_register(struct device *dev,
1599					   enum rfkill_type type,
1600					   char *name, u32 cap)
1601{
1602	int err;
1603	struct rfkill *rfkill_dev;
1604	u32 state;
1605	acpi_status status;
1606
1607	rfkill_dev = rfkill_alloc(name, dev, type,
1608				  &acer_rfkill_ops,
1609				  (void *)(unsigned long)cap);
1610	if (!rfkill_dev)
1611		return ERR_PTR(-ENOMEM);
1612
1613	status = get_u32(&state, cap);
1614
1615	err = rfkill_register(rfkill_dev);
1616	if (err) {
1617		rfkill_destroy(rfkill_dev);
1618		return ERR_PTR(err);
1619	}
1620
1621	if (ACPI_SUCCESS(status))
1622		rfkill_set_sw_state(rfkill_dev, !state);
1623
1624	return rfkill_dev;
1625}
1626
1627static int acer_rfkill_init(struct device *dev)
1628{
1629	int err;
1630
1631	if (has_cap(ACER_CAP_WIRELESS)) {
1632		wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
1633			"acer-wireless", ACER_CAP_WIRELESS);
1634		if (IS_ERR(wireless_rfkill)) {
1635			err = PTR_ERR(wireless_rfkill);
1636			goto error_wireless;
1637		}
1638	}
1639
1640	if (has_cap(ACER_CAP_BLUETOOTH)) {
1641		bluetooth_rfkill = acer_rfkill_register(dev,
1642			RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
1643			ACER_CAP_BLUETOOTH);
1644		if (IS_ERR(bluetooth_rfkill)) {
1645			err = PTR_ERR(bluetooth_rfkill);
1646			goto error_bluetooth;
1647		}
1648	}
1649
1650	if (has_cap(ACER_CAP_THREEG)) {
1651		threeg_rfkill = acer_rfkill_register(dev,
1652			RFKILL_TYPE_WWAN, "acer-threeg",
1653			ACER_CAP_THREEG);
1654		if (IS_ERR(threeg_rfkill)) {
1655			err = PTR_ERR(threeg_rfkill);
1656			goto error_threeg;
1657		}
1658	}
1659
1660	rfkill_inited = true;
1661
1662	if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1663	    has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1664		schedule_delayed_work(&acer_rfkill_work,
1665			round_jiffies_relative(HZ));
1666
1667	return 0;
1668
1669error_threeg:
1670	if (has_cap(ACER_CAP_BLUETOOTH)) {
1671		rfkill_unregister(bluetooth_rfkill);
1672		rfkill_destroy(bluetooth_rfkill);
1673	}
1674error_bluetooth:
1675	if (has_cap(ACER_CAP_WIRELESS)) {
1676		rfkill_unregister(wireless_rfkill);
1677		rfkill_destroy(wireless_rfkill);
1678	}
1679error_wireless:
1680	return err;
1681}
1682
1683static void acer_rfkill_exit(void)
1684{
1685	if ((ec_raw_mode || !wmi_has_guid(ACERWMID_EVENT_GUID)) &&
1686	    has_cap(ACER_CAP_WIRELESS | ACER_CAP_BLUETOOTH | ACER_CAP_THREEG))
1687		cancel_delayed_work_sync(&acer_rfkill_work);
1688
1689	if (has_cap(ACER_CAP_WIRELESS)) {
1690		rfkill_unregister(wireless_rfkill);
1691		rfkill_destroy(wireless_rfkill);
1692	}
1693
1694	if (has_cap(ACER_CAP_BLUETOOTH)) {
1695		rfkill_unregister(bluetooth_rfkill);
1696		rfkill_destroy(bluetooth_rfkill);
1697	}
1698
1699	if (has_cap(ACER_CAP_THREEG)) {
1700		rfkill_unregister(threeg_rfkill);
1701		rfkill_destroy(threeg_rfkill);
1702	}
1703	return;
1704}
1705
1706static void acer_wmi_notify(u32 value, void *context)
1707{
1708	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
1709	union acpi_object *obj;
1710	struct event_return_value return_value;
1711	acpi_status status;
1712	u16 device_state;
1713	const struct key_entry *key;
1714	u32 scancode;
1715
1716	status = wmi_get_event_data(value, &response);
1717	if (status != AE_OK) {
1718		pr_warn("bad event status 0x%x\n", status);
1719		return;
1720	}
1721
1722	obj = (union acpi_object *)response.pointer;
1723
1724	if (!obj)
1725		return;
1726	if (obj->type != ACPI_TYPE_BUFFER) {
1727		pr_warn("Unknown response received %d\n", obj->type);
1728		kfree(obj);
1729		return;
1730	}
1731	if (obj->buffer.length != 8) {
1732		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1733		kfree(obj);
1734		return;
1735	}
1736
1737	return_value = *((struct event_return_value *)obj->buffer.pointer);
1738	kfree(obj);
1739
1740	switch (return_value.function) {
1741	case WMID_HOTKEY_EVENT:
1742		device_state = return_value.device_state;
1743		pr_debug("device state: 0x%x\n", device_state);
1744
1745		key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,
1746							return_value.key_num);
1747		if (!key) {
1748			pr_warn("Unknown key number - 0x%x\n",
1749				return_value.key_num);
1750		} else {
1751			scancode = return_value.key_num;
1752			switch (key->keycode) {
1753			case KEY_WLAN:
1754			case KEY_BLUETOOTH:
1755				if (has_cap(ACER_CAP_WIRELESS))
1756					rfkill_set_sw_state(wireless_rfkill,
1757						!(device_state & ACER_WMID3_GDS_WIRELESS));
1758				if (has_cap(ACER_CAP_THREEG))
1759					rfkill_set_sw_state(threeg_rfkill,
1760						!(device_state & ACER_WMID3_GDS_THREEG));
1761				if (has_cap(ACER_CAP_BLUETOOTH))
1762					rfkill_set_sw_state(bluetooth_rfkill,
1763						!(device_state & ACER_WMID3_GDS_BLUETOOTH));
1764				break;
1765			case KEY_TOUCHPAD_TOGGLE:
1766				scancode = (device_state & ACER_WMID3_GDS_TOUCHPAD) ?
1767						KEY_TOUCHPAD_ON : KEY_TOUCHPAD_OFF;
1768			}
1769			sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);
1770		}
1771		break;
1772	case WMID_ACCEL_EVENT:
1773		acer_gsensor_event();
1774		break;
1775	default:
1776		pr_warn("Unknown function number - %d - %d\n",
1777			return_value.function, return_value.key_num);
1778		break;
1779	}
1780}
1781
1782static acpi_status __init
1783wmid3_set_function_mode(struct func_input_params *params,
1784			struct func_return_value *return_value)
1785{
1786	acpi_status status;
1787	union acpi_object *obj;
1788
1789	struct acpi_buffer input = { sizeof(struct func_input_params), params };
1790	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
1791
1792	status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output);
1793	if (ACPI_FAILURE(status))
1794		return status;
1795
1796	obj = output.pointer;
1797
1798	if (!obj)
1799		return AE_ERROR;
1800	else if (obj->type != ACPI_TYPE_BUFFER) {
1801		kfree(obj);
1802		return AE_ERROR;
1803	}
1804	if (obj->buffer.length != 4) {
1805		pr_warn("Unknown buffer length %d\n", obj->buffer.length);
1806		kfree(obj);
1807		return AE_ERROR;
1808	}
1809
1810	*return_value = *((struct func_return_value *)obj->buffer.pointer);
1811	kfree(obj);
1812
1813	return status;
1814}
1815
1816static int __init acer_wmi_enable_ec_raw(void)
1817{
1818	struct func_return_value return_value;
1819	acpi_status status;
1820	struct func_input_params params = {
1821		.function_num = 0x1,
1822		.commun_devices = 0xFFFF,
1823		.devices = 0xFFFF,
1824		.app_status = 0x00,		/* Launch Manager Deactive */
1825		.app_mask = 0x01,
1826	};
1827
1828	status = wmid3_set_function_mode(&params, &return_value);
1829
1830	if (return_value.error_code || return_value.ec_return_value)
1831		pr_warn("Enabling EC raw mode failed: 0x%x - 0x%x\n",
1832			return_value.error_code,
1833			return_value.ec_return_value);
1834	else
1835		pr_info("Enabled EC raw mode\n");
1836
1837	return status;
1838}
1839
1840static int __init acer_wmi_enable_lm(void)
1841{
1842	struct func_return_value return_value;
1843	acpi_status status;
1844	struct func_input_params params = {
1845		.function_num = 0x1,
1846		.commun_devices = 0xFFFF,
1847		.devices = 0xFFFF,
1848		.app_status = 0x01,            /* Launch Manager Active */
1849		.app_mask = 0x01,
1850	};
1851
1852	status = wmid3_set_function_mode(&params, &return_value);
1853
1854	if (return_value.error_code || return_value.ec_return_value)
1855		pr_warn("Enabling Launch Manager failed: 0x%x - 0x%x\n",
1856			return_value.error_code,
1857			return_value.ec_return_value);
1858
1859	return status;
1860}
1861
1862static int __init acer_wmi_enable_rf_button(void)
1863{
1864	struct func_return_value return_value;
1865	acpi_status status;
1866	struct func_input_params params = {
1867		.function_num = 0x1,
1868		.commun_devices = 0xFFFF,
1869		.devices = 0xFFFF,
1870		.app_status = 0x10,            /* RF Button Active */
1871		.app_mask = 0x10,
1872	};
1873
1874	status = wmid3_set_function_mode(&params, &return_value);
1875
1876	if (return_value.error_code || return_value.ec_return_value)
1877		pr_warn("Enabling RF Button failed: 0x%x - 0x%x\n",
1878			return_value.error_code,
1879			return_value.ec_return_value);
1880
1881	return status;
1882}
1883
1884static int __init acer_wmi_accel_setup(void)
1885{
1886	struct acpi_device *adev;
1887	int err;
1888
1889	adev = acpi_dev_get_first_match_dev("BST0001", NULL, -1);
1890	if (!adev)
1891		return -ENODEV;
1892
1893	gsensor_handle = acpi_device_handle(adev);
1894	acpi_dev_put(adev);
1895
1896	interface->capability |= ACER_CAP_ACCEL;
1897
1898	acer_wmi_accel_dev = input_allocate_device();
1899	if (!acer_wmi_accel_dev)
1900		return -ENOMEM;
1901
1902	acer_wmi_accel_dev->open = acer_gsensor_open;
1903
1904	acer_wmi_accel_dev->name = "Acer BMA150 accelerometer";
1905	acer_wmi_accel_dev->phys = "wmi/input1";
1906	acer_wmi_accel_dev->id.bustype = BUS_HOST;
1907	acer_wmi_accel_dev->evbit[0] = BIT_MASK(EV_ABS);
1908	input_set_abs_params(acer_wmi_accel_dev, ABS_X, -16384, 16384, 0, 0);
1909	input_set_abs_params(acer_wmi_accel_dev, ABS_Y, -16384, 16384, 0, 0);
1910	input_set_abs_params(acer_wmi_accel_dev, ABS_Z, -16384, 16384, 0, 0);
1911
1912	err = input_register_device(acer_wmi_accel_dev);
1913	if (err)
1914		goto err_free_dev;
1915
1916	return 0;
1917
1918err_free_dev:
1919	input_free_device(acer_wmi_accel_dev);
1920	return err;
1921}
1922
1923static void acer_wmi_accel_destroy(void)
1924{
1925	input_unregister_device(acer_wmi_accel_dev);
1926}
1927
1928static int __init acer_wmi_input_setup(void)
1929{
1930	acpi_status status;
1931	int err;
1932
1933	acer_wmi_input_dev = input_allocate_device();
1934	if (!acer_wmi_input_dev)
1935		return -ENOMEM;
1936
1937	acer_wmi_input_dev->name = "Acer WMI hotkeys";
1938	acer_wmi_input_dev->phys = "wmi/input0";
1939	acer_wmi_input_dev->id.bustype = BUS_HOST;
1940
1941	err = sparse_keymap_setup(acer_wmi_input_dev, acer_wmi_keymap, NULL);
1942	if (err)
1943		goto err_free_dev;
1944
1945	status = wmi_install_notify_handler(ACERWMID_EVENT_GUID,
1946						acer_wmi_notify, NULL);
1947	if (ACPI_FAILURE(status)) {
1948		err = -EIO;
1949		goto err_free_dev;
1950	}
1951
1952	err = input_register_device(acer_wmi_input_dev);
1953	if (err)
1954		goto err_uninstall_notifier;
1955
1956	return 0;
1957
1958err_uninstall_notifier:
1959	wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1960err_free_dev:
1961	input_free_device(acer_wmi_input_dev);
1962	return err;
1963}
1964
1965static void acer_wmi_input_destroy(void)
1966{
1967	wmi_remove_notify_handler(ACERWMID_EVENT_GUID);
1968	input_unregister_device(acer_wmi_input_dev);
1969}
1970
1971/*
1972 * debugfs functions
1973 */
1974static u32 get_wmid_devices(void)
1975{
1976	struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
1977	union acpi_object *obj;
1978	acpi_status status;
1979	u32 devices = 0;
1980
1981	status = wmi_query_block(WMID_GUID2, 0, &out);
1982	if (ACPI_FAILURE(status))
1983		return 0;
1984
1985	obj = (union acpi_object *) out.pointer;
1986	if (obj) {
1987		if (obj->type == ACPI_TYPE_BUFFER &&
1988			(obj->buffer.length == sizeof(u32) ||
1989			obj->buffer.length == sizeof(u64))) {
1990			devices = *((u32 *) obj->buffer.pointer);
1991		} else if (obj->type == ACPI_TYPE_INTEGER) {
1992			devices = (u32) obj->integer.value;
1993		}
1994	}
1995
1996	kfree(out.pointer);
1997	return devices;
1998}
1999
2000/*
2001 * Platform device
2002 */
2003static int acer_platform_probe(struct platform_device *device)
2004{
2005	int err;
2006
2007	if (has_cap(ACER_CAP_MAILLED)) {
2008		err = acer_led_init(&device->dev);
2009		if (err)
2010			goto error_mailled;
2011	}
2012
2013	if (has_cap(ACER_CAP_BRIGHTNESS)) {
2014		err = acer_backlight_init(&device->dev);
2015		if (err)
2016			goto error_brightness;
2017	}
2018
2019	err = acer_rfkill_init(&device->dev);
2020	if (err)
2021		goto error_rfkill;
2022
2023	return err;
2024
2025error_rfkill:
2026	if (has_cap(ACER_CAP_BRIGHTNESS))
2027		acer_backlight_exit();
2028error_brightness:
2029	if (has_cap(ACER_CAP_MAILLED))
2030		acer_led_exit();
2031error_mailled:
2032	return err;
2033}
2034
2035static int acer_platform_remove(struct platform_device *device)
2036{
2037	if (has_cap(ACER_CAP_MAILLED))
2038		acer_led_exit();
2039	if (has_cap(ACER_CAP_BRIGHTNESS))
2040		acer_backlight_exit();
2041
2042	acer_rfkill_exit();
2043	return 0;
2044}
2045
2046#ifdef CONFIG_PM_SLEEP
2047static int acer_suspend(struct device *dev)
2048{
2049	u32 value;
2050	struct acer_data *data = &interface->data;
2051
2052	if (!data)
2053		return -ENOMEM;
2054
2055	if (has_cap(ACER_CAP_MAILLED)) {
2056		get_u32(&value, ACER_CAP_MAILLED);
2057		set_u32(LED_OFF, ACER_CAP_MAILLED);
2058		data->mailled = value;
2059	}
2060
2061	if (has_cap(ACER_CAP_BRIGHTNESS)) {
2062		get_u32(&value, ACER_CAP_BRIGHTNESS);
2063		data->brightness = value;
2064	}
2065
2066	return 0;
2067}
2068
2069static int acer_resume(struct device *dev)
2070{
2071	struct acer_data *data = &interface->data;
2072
2073	if (!data)
2074		return -ENOMEM;
2075
2076	if (has_cap(ACER_CAP_MAILLED))
2077		set_u32(data->mailled, ACER_CAP_MAILLED);
2078
2079	if (has_cap(ACER_CAP_BRIGHTNESS))
2080		set_u32(data->brightness, ACER_CAP_BRIGHTNESS);
2081
2082	if (has_cap(ACER_CAP_ACCEL))
2083		acer_gsensor_init();
2084
2085	return 0;
2086}
2087#else
2088#define acer_suspend	NULL
2089#define acer_resume	NULL
2090#endif
2091
2092static SIMPLE_DEV_PM_OPS(acer_pm, acer_suspend, acer_resume);
2093
2094static void acer_platform_shutdown(struct platform_device *device)
2095{
2096	struct acer_data *data = &interface->data;
2097
2098	if (!data)
2099		return;
2100
2101	if (has_cap(ACER_CAP_MAILLED))
2102		set_u32(LED_OFF, ACER_CAP_MAILLED);
2103}
2104
2105static struct platform_driver acer_platform_driver = {
2106	.driver = {
2107		.name = "acer-wmi",
2108		.pm = &acer_pm,
2109	},
2110	.probe = acer_platform_probe,
2111	.remove = acer_platform_remove,
2112	.shutdown = acer_platform_shutdown,
2113};
2114
2115static struct platform_device *acer_platform_device;
2116
2117static void remove_debugfs(void)
2118{
2119	debugfs_remove_recursive(interface->debug.root);
2120}
2121
2122static void __init create_debugfs(void)
2123{
2124	interface->debug.root = debugfs_create_dir("acer-wmi", NULL);
2125
2126	debugfs_create_u32("devices", S_IRUGO, interface->debug.root,
2127			   &interface->debug.wmid_devices);
2128}
2129
2130static int __init acer_wmi_init(void)
2131{
2132	int err;
2133
2134	pr_info("Acer Laptop ACPI-WMI Extras\n");
2135
2136	if (dmi_check_system(acer_blacklist)) {
2137		pr_info("Blacklisted hardware detected - not loading\n");
2138		return -ENODEV;
2139	}
2140
2141	find_quirks();
2142
2143	/*
2144	 * The AMW0_GUID1 wmi is not only found on Acer family but also other
2145	 * machines like Lenovo, Fujitsu and Medion. In the past days,
2146	 * acer-wmi driver handled those non-Acer machines by quirks list.
2147	 * But actually acer-wmi driver was loaded on any machines that have
2148	 * AMW0_GUID1. This behavior is strange because those machines should
2149	 * be supported by appropriate wmi drivers. e.g. fujitsu-laptop,
2150	 * ideapad-laptop. So, here checks the machine that has AMW0_GUID1
2151	 * should be in Acer/Gateway/Packard Bell white list, or it's already
2152	 * in the past quirk list.
2153	 */
2154	if (wmi_has_guid(AMW0_GUID1) &&
2155	    !dmi_check_system(amw0_whitelist) &&
2156	    quirks == &quirk_unknown) {
2157		pr_debug("Unsupported machine has AMW0_GUID1, unable to load\n");
2158		return -ENODEV;
2159	}
2160
2161	/*
2162	 * Detect which ACPI-WMI interface we're using.
2163	 */
2164	if (wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2165		interface = &AMW0_V2_interface;
2166
2167	if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
2168		interface = &wmid_interface;
2169
2170	if (wmi_has_guid(WMID_GUID3))
2171		interface = &wmid_v2_interface;
2172
2173	if (interface)
2174		dmi_walk(type_aa_dmi_decode, NULL);
2175
2176	if (wmi_has_guid(WMID_GUID2) && interface) {
2177		if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
2178			pr_err("Unable to detect available WMID devices\n");
2179			return -ENODEV;
2180		}
2181		/* WMID always provides brightness methods */
2182		interface->capability |= ACER_CAP_BRIGHTNESS;
2183	} else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
2184		pr_err("No WMID device detection method found\n");
2185		return -ENODEV;
2186	}
2187
2188	if (wmi_has_guid(AMW0_GUID1) && !wmi_has_guid(WMID_GUID1)) {
2189		interface = &AMW0_interface;
2190
2191		if (ACPI_FAILURE(AMW0_set_capabilities())) {
2192			pr_err("Unable to detect available AMW0 devices\n");
2193			return -ENODEV;
2194		}
2195	}
2196
2197	if (wmi_has_guid(AMW0_GUID1))
2198		AMW0_find_mailled();
2199
2200	if (!interface) {
2201		pr_err("No or unsupported WMI interface, unable to load\n");
2202		return -ENODEV;
2203	}
2204
2205	set_quirks();
2206
2207	if (dmi_check_system(video_vendor_dmi_table))
2208		acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
2209
2210	if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
2211		interface->capability &= ~ACER_CAP_BRIGHTNESS;
2212
2213	if (wmi_has_guid(WMID_GUID3)) {
2214		if (ACPI_FAILURE(acer_wmi_enable_rf_button()))
2215			pr_warn("Cannot enable RF Button Driver\n");
2216
2217		if (ec_raw_mode) {
2218			if (ACPI_FAILURE(acer_wmi_enable_ec_raw())) {
2219				pr_err("Cannot enable EC raw mode\n");
2220				return -ENODEV;
2221			}
2222		} else if (ACPI_FAILURE(acer_wmi_enable_lm())) {
2223			pr_err("Cannot enable Launch Manager mode\n");
2224			return -ENODEV;
2225		}
2226	} else if (ec_raw_mode) {
2227		pr_info("No WMID EC raw mode enable method\n");
2228	}
2229
2230	if (wmi_has_guid(ACERWMID_EVENT_GUID)) {
2231		err = acer_wmi_input_setup();
2232		if (err)
2233			return err;
2234		err = acer_wmi_accel_setup();
2235		if (err && err != -ENODEV)
2236			pr_warn("Cannot enable accelerometer\n");
2237	}
2238
2239	err = platform_driver_register(&acer_platform_driver);
2240	if (err) {
2241		pr_err("Unable to register platform driver\n");
2242		goto error_platform_register;
2243	}
2244
2245	acer_platform_device = platform_device_alloc("acer-wmi", -1);
2246	if (!acer_platform_device) {
2247		err = -ENOMEM;
2248		goto error_device_alloc;
2249	}
2250
2251	err = platform_device_add(acer_platform_device);
2252	if (err)
2253		goto error_device_add;
2254
2255	if (wmi_has_guid(WMID_GUID2)) {
2256		interface->debug.wmid_devices = get_wmid_devices();
2257		create_debugfs();
2258	}
2259
2260	/* Override any initial settings with values from the commandline */
2261	acer_commandline_init();
2262
2263	return 0;
2264
2265error_device_add:
2266	platform_device_put(acer_platform_device);
2267error_device_alloc:
2268	platform_driver_unregister(&acer_platform_driver);
2269error_platform_register:
2270	if (wmi_has_guid(ACERWMID_EVENT_GUID))
2271		acer_wmi_input_destroy();
2272	if (has_cap(ACER_CAP_ACCEL))
2273		acer_wmi_accel_destroy();
2274
2275	return err;
2276}
2277
2278static void __exit acer_wmi_exit(void)
2279{
2280	if (wmi_has_guid(ACERWMID_EVENT_GUID))
2281		acer_wmi_input_destroy();
2282
2283	if (has_cap(ACER_CAP_ACCEL))
2284		acer_wmi_accel_destroy();
2285
2286	remove_debugfs();
2287	platform_device_unregister(acer_platform_device);
2288	platform_driver_unregister(&acer_platform_driver);
2289
2290	pr_info("Acer Laptop WMI Extras unloaded\n");
2291	return;
2292}
2293
2294module_init(acer_wmi_init);
2295module_exit(acer_wmi_exit);