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/drivers/platform/x86/asus-laptop.c

http://github.com/mirrors/linux
C | 1978 lines | 1447 code | 310 blank | 221 comment | 228 complexity | ab6c2b627ee3f30f5bfef47a59ec539f MD5 | raw file

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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  asus-laptop.c - Asus Laptop Support
   4 *
   5 *  Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
   6 *  Copyright (C) 2006-2007 Corentin Chary
   7 *  Copyright (C) 2011 Wind River Systems
   8 *
   9 *  The development page for this driver is located at
  10 *  http://sourceforge.net/projects/acpi4asus/
  11 *
  12 *  Credits:
  13 *  Pontus Fuchs   - Helper functions, cleanup
  14 *  Johann Wiesner - Small compile fixes
  15 *  John Belmonte  - ACPI code for Toshiba laptop was a good starting point.
  16 *  Eric Burghard  - LED display support for W1N
  17 *  Josh Green     - Light Sens support
  18 *  Thomas Tuttle  - His first patch for led support was very helpful
  19 *  Sam Lin        - GPS support
  20 */
  21
  22#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  23
  24#include <linux/kernel.h>
  25#include <linux/module.h>
  26#include <linux/init.h>
  27#include <linux/types.h>
  28#include <linux/err.h>
  29#include <linux/proc_fs.h>
  30#include <linux/backlight.h>
  31#include <linux/fb.h>
  32#include <linux/leds.h>
  33#include <linux/platform_device.h>
  34#include <linux/uaccess.h>
  35#include <linux/input.h>
  36#include <linux/input/sparse-keymap.h>
  37#include <linux/rfkill.h>
  38#include <linux/slab.h>
  39#include <linux/dmi.h>
  40#include <linux/acpi.h>
  41#include <acpi/video.h>
  42
  43#define ASUS_LAPTOP_VERSION	"0.42"
  44
  45#define ASUS_LAPTOP_NAME	"Asus Laptop Support"
  46#define ASUS_LAPTOP_CLASS	"hotkey"
  47#define ASUS_LAPTOP_DEVICE_NAME	"Hotkey"
  48#define ASUS_LAPTOP_FILE	KBUILD_MODNAME
  49#define ASUS_LAPTOP_PREFIX	"\\_SB.ATKD."
  50
  51MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
  52MODULE_DESCRIPTION(ASUS_LAPTOP_NAME);
  53MODULE_LICENSE("GPL");
  54
  55/*
  56 * WAPF defines the behavior of the Fn+Fx wlan key
  57 * The significance of values is yet to be found, but
  58 * most of the time:
  59 * Bit | Bluetooth | WLAN
  60 *  0  | Hardware  | Hardware
  61 *  1  | Hardware  | Software
  62 *  4  | Software  | Software
  63 */
  64static uint wapf = 1;
  65module_param(wapf, uint, 0444);
  66MODULE_PARM_DESC(wapf, "WAPF value");
  67
  68static char *wled_type = "unknown";
  69static char *bled_type = "unknown";
  70
  71module_param(wled_type, charp, 0444);
  72MODULE_PARM_DESC(wled_type, "Set the wled type on boot "
  73		 "(unknown, led or rfkill). "
  74		 "default is unknown");
  75
  76module_param(bled_type, charp, 0444);
  77MODULE_PARM_DESC(bled_type, "Set the bled type on boot "
  78		 "(unknown, led or rfkill). "
  79		 "default is unknown");
  80
  81static int wlan_status = 1;
  82static int bluetooth_status = 1;
  83static int wimax_status = -1;
  84static int wwan_status = -1;
  85static int als_status;
  86
  87module_param(wlan_status, int, 0444);
  88MODULE_PARM_DESC(wlan_status, "Set the wireless status on boot "
  89		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
  90		 "default is -1");
  91
  92module_param(bluetooth_status, int, 0444);
  93MODULE_PARM_DESC(bluetooth_status, "Set the wireless status on boot "
  94		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
  95		 "default is -1");
  96
  97module_param(wimax_status, int, 0444);
  98MODULE_PARM_DESC(wimax_status, "Set the wireless status on boot "
  99		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 100		 "default is -1");
 101
 102module_param(wwan_status, int, 0444);
 103MODULE_PARM_DESC(wwan_status, "Set the wireless status on boot "
 104		 "(0 = disabled, 1 = enabled, -1 = don't do anything). "
 105		 "default is -1");
 106
 107module_param(als_status, int, 0444);
 108MODULE_PARM_DESC(als_status, "Set the ALS status on boot "
 109		 "(0 = disabled, 1 = enabled). "
 110		 "default is 0");
 111
 112/*
 113 * Some events we use, same for all Asus
 114 */
 115#define ATKD_BRNUP_MIN		0x10
 116#define ATKD_BRNUP_MAX		0x1f
 117#define ATKD_BRNDOWN_MIN	0x20
 118#define ATKD_BRNDOWN_MAX	0x2f
 119#define ATKD_BRNDOWN		0x20
 120#define ATKD_BRNUP		0x2f
 121#define ATKD_LCD_ON	0x33
 122#define ATKD_LCD_OFF	0x34
 123
 124/*
 125 * Known bits returned by \_SB.ATKD.HWRS
 126 */
 127#define WL_HWRS		0x80
 128#define BT_HWRS		0x100
 129
 130/*
 131 * Flags for hotk status
 132 * WL_ON and BT_ON are also used for wireless_status()
 133 */
 134#define WL_RSTS		0x01	/* internal Wifi */
 135#define BT_RSTS		0x02	/* internal Bluetooth */
 136#define WM_RSTS		0x08    /* internal wimax */
 137#define WW_RSTS		0x20    /* internal wwan */
 138
 139/* WLED and BLED type */
 140#define TYPE_UNKNOWN	0
 141#define TYPE_LED	1
 142#define TYPE_RFKILL	2
 143
 144/* LED */
 145#define METHOD_MLED		"MLED"
 146#define METHOD_TLED		"TLED"
 147#define METHOD_RLED		"RLED"	/* W1JC */
 148#define METHOD_PLED		"PLED"	/* A7J */
 149#define METHOD_GLED		"GLED"	/* G1, G2 (probably) */
 150
 151/* LEDD */
 152#define METHOD_LEDD		"SLCM"
 153
 154/*
 155 * Bluetooth and WLAN
 156 * WLED and BLED are not handled like other XLED, because in some dsdt
 157 * they also control the WLAN/Bluetooth device.
 158 */
 159#define METHOD_WLAN		"WLED"
 160#define METHOD_BLUETOOTH	"BLED"
 161
 162/* WWAN and WIMAX */
 163#define METHOD_WWAN		"GSMC"
 164#define METHOD_WIMAX		"WMXC"
 165
 166#define METHOD_WL_STATUS	"RSTS"
 167
 168/* Brightness */
 169#define METHOD_BRIGHTNESS_SET	"SPLV"
 170#define METHOD_BRIGHTNESS_GET	"GPLV"
 171
 172/* Display */
 173#define METHOD_SWITCH_DISPLAY	"SDSP"
 174
 175#define METHOD_ALS_CONTROL	"ALSC" /* Z71A Z71V */
 176#define METHOD_ALS_LEVEL	"ALSL" /* Z71A Z71V */
 177
 178/* GPS */
 179/* R2H use different handle for GPS on/off */
 180#define METHOD_GPS_ON		"SDON"
 181#define METHOD_GPS_OFF		"SDOF"
 182#define METHOD_GPS_STATUS	"GPST"
 183
 184/* Keyboard light */
 185#define METHOD_KBD_LIGHT_SET	"SLKB"
 186#define METHOD_KBD_LIGHT_GET	"GLKB"
 187
 188/* For Pegatron Lucid tablet */
 189#define DEVICE_NAME_PEGA	"Lucid"
 190
 191#define METHOD_PEGA_ENABLE	"ENPR"
 192#define METHOD_PEGA_DISABLE	"DAPR"
 193#define PEGA_WLAN	0x00
 194#define PEGA_BLUETOOTH	0x01
 195#define PEGA_WWAN	0x02
 196#define PEGA_ALS	0x04
 197#define PEGA_ALS_POWER	0x05
 198
 199#define METHOD_PEGA_READ	"RDLN"
 200#define PEGA_READ_ALS_H	0x02
 201#define PEGA_READ_ALS_L	0x03
 202
 203#define PEGA_ACCEL_NAME "pega_accel"
 204#define PEGA_ACCEL_DESC "Pegatron Lucid Tablet Accelerometer"
 205#define METHOD_XLRX "XLRX"
 206#define METHOD_XLRY "XLRY"
 207#define METHOD_XLRZ "XLRZ"
 208#define PEGA_ACC_CLAMP 512 /* 1G accel is reported as ~256, so clamp to 2G */
 209#define PEGA_ACC_RETRIES 3
 210
 211/*
 212 * Define a specific led structure to keep the main structure clean
 213 */
 214struct asus_led {
 215	int wk;
 216	struct work_struct work;
 217	struct led_classdev led;
 218	struct asus_laptop *asus;
 219	const char *method;
 220};
 221
 222/*
 223 * Same thing for rfkill
 224 */
 225struct asus_rfkill {
 226	/* type of control. Maps to PEGA_* values or *_RSTS  */
 227	int control_id;
 228	struct rfkill *rfkill;
 229	struct asus_laptop *asus;
 230};
 231
 232/*
 233 * This is the main structure, we can use it to store anything interesting
 234 * about the hotk device
 235 */
 236struct asus_laptop {
 237	char *name;		/* laptop name */
 238
 239	struct acpi_table_header *dsdt_info;
 240	struct platform_device *platform_device;
 241	struct acpi_device *device;		/* the device we are in */
 242	struct backlight_device *backlight_device;
 243
 244	struct input_dev *inputdev;
 245	struct key_entry *keymap;
 246	struct input_dev *pega_accel_poll;
 247
 248	struct asus_led wled;
 249	struct asus_led bled;
 250	struct asus_led mled;
 251	struct asus_led tled;
 252	struct asus_led rled;
 253	struct asus_led pled;
 254	struct asus_led gled;
 255	struct asus_led kled;
 256	struct workqueue_struct *led_workqueue;
 257
 258	int wled_type;
 259	int bled_type;
 260	int wireless_status;
 261	bool have_rsts;
 262	bool is_pega_lucid;
 263	bool pega_acc_live;
 264	int pega_acc_x;
 265	int pega_acc_y;
 266	int pega_acc_z;
 267
 268	struct asus_rfkill wlan;
 269	struct asus_rfkill bluetooth;
 270	struct asus_rfkill wwan;
 271	struct asus_rfkill wimax;
 272	struct asus_rfkill gps;
 273
 274	acpi_handle handle;	/* the handle of the hotk device */
 275	u32 ledd_status;	/* status of the LED display */
 276	u8 light_level;		/* light sensor level */
 277	u8 light_switch;	/* light sensor switch value */
 278	u16 event_count[128];	/* count for each event TODO make this better */
 279};
 280
 281static const struct key_entry asus_keymap[] = {
 282	/* Lenovo SL Specific keycodes */
 283	{KE_KEY, 0x02, { KEY_SCREENLOCK } },
 284	{KE_KEY, 0x05, { KEY_WLAN } },
 285	{KE_KEY, 0x08, { KEY_F13 } },
 286	{KE_KEY, 0x09, { KEY_PROG2 } }, /* Dock */
 287	{KE_KEY, 0x17, { KEY_ZOOM } },
 288	{KE_KEY, 0x1f, { KEY_BATTERY } },
 289	/* End of Lenovo SL Specific keycodes */
 290	{KE_KEY, ATKD_BRNDOWN, { KEY_BRIGHTNESSDOWN } },
 291	{KE_KEY, ATKD_BRNUP, { KEY_BRIGHTNESSUP } },
 292	{KE_KEY, 0x30, { KEY_VOLUMEUP } },
 293	{KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
 294	{KE_KEY, 0x32, { KEY_MUTE } },
 295	{KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
 296	{KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
 297	{KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
 298	{KE_KEY, 0x41, { KEY_NEXTSONG } },
 299	{KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
 300	{KE_KEY, 0x45, { KEY_PLAYPAUSE } },
 301	{KE_KEY, 0x4c, { KEY_MEDIA } }, /* WMP Key */
 302	{KE_KEY, 0x50, { KEY_EMAIL } },
 303	{KE_KEY, 0x51, { KEY_WWW } },
 304	{KE_KEY, 0x55, { KEY_CALC } },
 305	{KE_IGNORE, 0x57, },  /* Battery mode */
 306	{KE_IGNORE, 0x58, },  /* AC mode */
 307	{KE_KEY, 0x5C, { KEY_SCREENLOCK } },  /* Screenlock */
 308	{KE_KEY, 0x5D, { KEY_WLAN } }, /* WLAN Toggle */
 309	{KE_KEY, 0x5E, { KEY_WLAN } }, /* WLAN Enable */
 310	{KE_KEY, 0x5F, { KEY_WLAN } }, /* WLAN Disable */
 311	{KE_KEY, 0x60, { KEY_TOUCHPAD_ON } },
 312	{KE_KEY, 0x61, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD only */
 313	{KE_KEY, 0x62, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT only */
 314	{KE_KEY, 0x63, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT */
 315	{KE_KEY, 0x64, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV */
 316	{KE_KEY, 0x65, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV */
 317	{KE_KEY, 0x66, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV */
 318	{KE_KEY, 0x67, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV */
 319	{KE_KEY, 0x6A, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad Fn + F9 */
 320	{KE_KEY, 0x6B, { KEY_TOUCHPAD_TOGGLE } }, /* Lock Touchpad */
 321	{KE_KEY, 0x6C, { KEY_SLEEP } }, /* Suspend */
 322	{KE_KEY, 0x6D, { KEY_SLEEP } }, /* Hibernate */
 323	{KE_IGNORE, 0x6E, },  /* Low Battery notification */
 324	{KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
 325	{KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
 326	{KE_KEY, 0x82, { KEY_CAMERA } },
 327	{KE_KEY, 0x88, { KEY_RFKILL  } }, /* Radio Toggle Key */
 328	{KE_KEY, 0x8A, { KEY_PROG1 } }, /* Color enhancement mode */
 329	{KE_KEY, 0x8C, { KEY_SWITCHVIDEOMODE } }, /* SDSP DVI only */
 330	{KE_KEY, 0x8D, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + DVI */
 331	{KE_KEY, 0x8E, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + DVI */
 332	{KE_KEY, 0x8F, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + DVI */
 333	{KE_KEY, 0x90, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + DVI */
 334	{KE_KEY, 0x91, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + DVI */
 335	{KE_KEY, 0x92, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + DVI */
 336	{KE_KEY, 0x93, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + DVI */
 337	{KE_KEY, 0x95, { KEY_MEDIA } },
 338	{KE_KEY, 0x99, { KEY_PHONE } },
 339	{KE_KEY, 0xA0, { KEY_SWITCHVIDEOMODE } }, /* SDSP HDMI only */
 340	{KE_KEY, 0xA1, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + HDMI */
 341	{KE_KEY, 0xA2, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + HDMI */
 342	{KE_KEY, 0xA3, { KEY_SWITCHVIDEOMODE } }, /* SDSP TV + HDMI */
 343	{KE_KEY, 0xA4, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + HDMI */
 344	{KE_KEY, 0xA5, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + TV + HDMI */
 345	{KE_KEY, 0xA6, { KEY_SWITCHVIDEOMODE } }, /* SDSP CRT + TV + HDMI */
 346	{KE_KEY, 0xA7, { KEY_SWITCHVIDEOMODE } }, /* SDSP LCD + CRT + TV + HDMI */
 347	{KE_KEY, 0xB5, { KEY_CALC } },
 348	{KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
 349	{KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
 350	{KE_END, 0},
 351};
 352
 353
 354/*
 355 * This function evaluates an ACPI method, given an int as parameter, the
 356 * method is searched within the scope of the handle, can be NULL. The output
 357 * of the method is written is output, which can also be NULL
 358 *
 359 * returns 0 if write is successful, -1 else.
 360 */
 361static int write_acpi_int_ret(acpi_handle handle, const char *method, int val,
 362			      struct acpi_buffer *output)
 363{
 364	struct acpi_object_list params;	/* list of input parameters (an int) */
 365	union acpi_object in_obj;	/* the only param we use */
 366	acpi_status status;
 367
 368	if (!handle)
 369		return -1;
 370
 371	params.count = 1;
 372	params.pointer = &in_obj;
 373	in_obj.type = ACPI_TYPE_INTEGER;
 374	in_obj.integer.value = val;
 375
 376	status = acpi_evaluate_object(handle, (char *)method, &params, output);
 377	if (status == AE_OK)
 378		return 0;
 379	else
 380		return -1;
 381}
 382
 383static int write_acpi_int(acpi_handle handle, const char *method, int val)
 384{
 385	return write_acpi_int_ret(handle, method, val, NULL);
 386}
 387
 388static int acpi_check_handle(acpi_handle handle, const char *method,
 389			     acpi_handle *ret)
 390{
 391	acpi_status status;
 392
 393	if (method == NULL)
 394		return -ENODEV;
 395
 396	if (ret)
 397		status = acpi_get_handle(handle, (char *)method,
 398					 ret);
 399	else {
 400		acpi_handle dummy;
 401
 402		status = acpi_get_handle(handle, (char *)method,
 403					 &dummy);
 404	}
 405
 406	if (status != AE_OK) {
 407		if (ret)
 408			pr_warn("Error finding %s\n", method);
 409		return -ENODEV;
 410	}
 411	return 0;
 412}
 413
 414static bool asus_check_pega_lucid(struct asus_laptop *asus)
 415{
 416	return !strcmp(asus->name, DEVICE_NAME_PEGA) &&
 417	   !acpi_check_handle(asus->handle, METHOD_PEGA_ENABLE, NULL) &&
 418	   !acpi_check_handle(asus->handle, METHOD_PEGA_DISABLE, NULL) &&
 419	   !acpi_check_handle(asus->handle, METHOD_PEGA_READ, NULL);
 420}
 421
 422static int asus_pega_lucid_set(struct asus_laptop *asus, int unit, bool enable)
 423{
 424	char *method = enable ? METHOD_PEGA_ENABLE : METHOD_PEGA_DISABLE;
 425	return write_acpi_int(asus->handle, method, unit);
 426}
 427
 428static int pega_acc_axis(struct asus_laptop *asus, int curr, char *method)
 429{
 430	int i, delta;
 431	unsigned long long val;
 432	for (i = 0; i < PEGA_ACC_RETRIES; i++) {
 433		acpi_evaluate_integer(asus->handle, method, NULL, &val);
 434
 435		/* The output is noisy.  From reading the ASL
 436		 * dissassembly, timeout errors are returned with 1's
 437		 * in the high word, and the lack of locking around
 438		 * thei hi/lo byte reads means that a transition
 439		 * between (for example) -1 and 0 could be read as
 440		 * 0xff00 or 0x00ff. */
 441		delta = abs(curr - (short)val);
 442		if (delta < 128 && !(val & ~0xffff))
 443			break;
 444	}
 445	return clamp_val((short)val, -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP);
 446}
 447
 448static void pega_accel_poll(struct input_dev *input)
 449{
 450	struct device *parent = input->dev.parent;
 451	struct asus_laptop *asus = dev_get_drvdata(parent);
 452
 453	/* In some cases, the very first call to poll causes a
 454	 * recursive fault under the polldev worker.  This is
 455	 * apparently related to very early userspace access to the
 456	 * device, and perhaps a firmware bug. Fake the first report. */
 457	if (!asus->pega_acc_live) {
 458		asus->pega_acc_live = true;
 459		input_report_abs(input, ABS_X, 0);
 460		input_report_abs(input, ABS_Y, 0);
 461		input_report_abs(input, ABS_Z, 0);
 462		input_sync(input);
 463		return;
 464	}
 465
 466	asus->pega_acc_x = pega_acc_axis(asus, asus->pega_acc_x, METHOD_XLRX);
 467	asus->pega_acc_y = pega_acc_axis(asus, asus->pega_acc_y, METHOD_XLRY);
 468	asus->pega_acc_z = pega_acc_axis(asus, asus->pega_acc_z, METHOD_XLRZ);
 469
 470	/* Note transform, convert to "right/up/out" in the native
 471	 * landscape orientation (i.e. the vector is the direction of
 472	 * "real up" in the device's cartiesian coordinates). */
 473	input_report_abs(input, ABS_X, -asus->pega_acc_x);
 474	input_report_abs(input, ABS_Y, -asus->pega_acc_y);
 475	input_report_abs(input, ABS_Z,  asus->pega_acc_z);
 476	input_sync(input);
 477}
 478
 479static void pega_accel_exit(struct asus_laptop *asus)
 480{
 481	if (asus->pega_accel_poll) {
 482		input_unregister_device(asus->pega_accel_poll);
 483		asus->pega_accel_poll = NULL;
 484	}
 485}
 486
 487static int pega_accel_init(struct asus_laptop *asus)
 488{
 489	int err;
 490	struct input_dev *input;
 491
 492	if (!asus->is_pega_lucid)
 493		return -ENODEV;
 494
 495	if (acpi_check_handle(asus->handle, METHOD_XLRX, NULL) ||
 496	    acpi_check_handle(asus->handle, METHOD_XLRY, NULL) ||
 497	    acpi_check_handle(asus->handle, METHOD_XLRZ, NULL))
 498		return -ENODEV;
 499
 500	input = input_allocate_device();
 501	if (!input)
 502		return -ENOMEM;
 503
 504	input->name = PEGA_ACCEL_DESC;
 505	input->phys = PEGA_ACCEL_NAME "/input0";
 506	input->dev.parent = &asus->platform_device->dev;
 507	input->id.bustype = BUS_HOST;
 508
 509	input_set_abs_params(input, ABS_X,
 510			     -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 511	input_set_abs_params(input, ABS_Y,
 512			     -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 513	input_set_abs_params(input, ABS_Z,
 514			     -PEGA_ACC_CLAMP, PEGA_ACC_CLAMP, 0, 0);
 515
 516	err = input_setup_polling(input, pega_accel_poll);
 517	if (err)
 518		goto exit;
 519
 520	input_set_poll_interval(input, 125);
 521	input_set_min_poll_interval(input, 50);
 522	input_set_max_poll_interval(input, 2000);
 523
 524	err = input_register_device(input);
 525	if (err)
 526		goto exit;
 527
 528	asus->pega_accel_poll = input;
 529	return 0;
 530
 531exit:
 532	input_free_device(input);
 533	return err;
 534}
 535
 536/* Generic LED function */
 537static int asus_led_set(struct asus_laptop *asus, const char *method,
 538			 int value)
 539{
 540	if (!strcmp(method, METHOD_MLED))
 541		value = !value;
 542	else if (!strcmp(method, METHOD_GLED))
 543		value = !value + 1;
 544	else
 545		value = !!value;
 546
 547	return write_acpi_int(asus->handle, method, value);
 548}
 549
 550/*
 551 * LEDs
 552 */
 553/* /sys/class/led handlers */
 554static void asus_led_cdev_set(struct led_classdev *led_cdev,
 555			 enum led_brightness value)
 556{
 557	struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 558	struct asus_laptop *asus = led->asus;
 559
 560	led->wk = !!value;
 561	queue_work(asus->led_workqueue, &led->work);
 562}
 563
 564static void asus_led_cdev_update(struct work_struct *work)
 565{
 566	struct asus_led *led = container_of(work, struct asus_led, work);
 567	struct asus_laptop *asus = led->asus;
 568
 569	asus_led_set(asus, led->method, led->wk);
 570}
 571
 572static enum led_brightness asus_led_cdev_get(struct led_classdev *led_cdev)
 573{
 574	return led_cdev->brightness;
 575}
 576
 577/*
 578 * Keyboard backlight (also a LED)
 579 */
 580static int asus_kled_lvl(struct asus_laptop *asus)
 581{
 582	unsigned long long kblv;
 583	struct acpi_object_list params;
 584	union acpi_object in_obj;
 585	acpi_status rv;
 586
 587	params.count = 1;
 588	params.pointer = &in_obj;
 589	in_obj.type = ACPI_TYPE_INTEGER;
 590	in_obj.integer.value = 2;
 591
 592	rv = acpi_evaluate_integer(asus->handle, METHOD_KBD_LIGHT_GET,
 593				   &params, &kblv);
 594	if (ACPI_FAILURE(rv)) {
 595		pr_warn("Error reading kled level\n");
 596		return -ENODEV;
 597	}
 598	return kblv;
 599}
 600
 601static int asus_kled_set(struct asus_laptop *asus, int kblv)
 602{
 603	if (kblv > 0)
 604		kblv = (1 << 7) | (kblv & 0x7F);
 605	else
 606		kblv = 0;
 607
 608	if (write_acpi_int(asus->handle, METHOD_KBD_LIGHT_SET, kblv)) {
 609		pr_warn("Keyboard LED display write failed\n");
 610		return -EINVAL;
 611	}
 612	return 0;
 613}
 614
 615static void asus_kled_cdev_set(struct led_classdev *led_cdev,
 616			      enum led_brightness value)
 617{
 618	struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 619	struct asus_laptop *asus = led->asus;
 620
 621	led->wk = value;
 622	queue_work(asus->led_workqueue, &led->work);
 623}
 624
 625static void asus_kled_cdev_update(struct work_struct *work)
 626{
 627	struct asus_led *led = container_of(work, struct asus_led, work);
 628	struct asus_laptop *asus = led->asus;
 629
 630	asus_kled_set(asus, led->wk);
 631}
 632
 633static enum led_brightness asus_kled_cdev_get(struct led_classdev *led_cdev)
 634{
 635	struct asus_led *led = container_of(led_cdev, struct asus_led, led);
 636	struct asus_laptop *asus = led->asus;
 637
 638	return asus_kled_lvl(asus);
 639}
 640
 641static void asus_led_exit(struct asus_laptop *asus)
 642{
 643	if (!IS_ERR_OR_NULL(asus->wled.led.dev))
 644		led_classdev_unregister(&asus->wled.led);
 645	if (!IS_ERR_OR_NULL(asus->bled.led.dev))
 646		led_classdev_unregister(&asus->bled.led);
 647	if (!IS_ERR_OR_NULL(asus->mled.led.dev))
 648		led_classdev_unregister(&asus->mled.led);
 649	if (!IS_ERR_OR_NULL(asus->tled.led.dev))
 650		led_classdev_unregister(&asus->tled.led);
 651	if (!IS_ERR_OR_NULL(asus->pled.led.dev))
 652		led_classdev_unregister(&asus->pled.led);
 653	if (!IS_ERR_OR_NULL(asus->rled.led.dev))
 654		led_classdev_unregister(&asus->rled.led);
 655	if (!IS_ERR_OR_NULL(asus->gled.led.dev))
 656		led_classdev_unregister(&asus->gled.led);
 657	if (!IS_ERR_OR_NULL(asus->kled.led.dev))
 658		led_classdev_unregister(&asus->kled.led);
 659	if (asus->led_workqueue) {
 660		destroy_workqueue(asus->led_workqueue);
 661		asus->led_workqueue = NULL;
 662	}
 663}
 664
 665/*  Ugly macro, need to fix that later */
 666static int asus_led_register(struct asus_laptop *asus,
 667			     struct asus_led *led,
 668			     const char *name, const char *method)
 669{
 670	struct led_classdev *led_cdev = &led->led;
 671
 672	if (!method || acpi_check_handle(asus->handle, method, NULL))
 673		return 0; /* Led not present */
 674
 675	led->asus = asus;
 676	led->method = method;
 677
 678	INIT_WORK(&led->work, asus_led_cdev_update);
 679	led_cdev->name = name;
 680	led_cdev->brightness_set = asus_led_cdev_set;
 681	led_cdev->brightness_get = asus_led_cdev_get;
 682	led_cdev->max_brightness = 1;
 683	return led_classdev_register(&asus->platform_device->dev, led_cdev);
 684}
 685
 686static int asus_led_init(struct asus_laptop *asus)
 687{
 688	int r = 0;
 689
 690	/*
 691	 * The Pegatron Lucid has no physical leds, but all methods are
 692	 * available in the DSDT...
 693	 */
 694	if (asus->is_pega_lucid)
 695		return 0;
 696
 697	/*
 698	 * Functions that actually update the LED's are called from a
 699	 * workqueue. By doing this as separate work rather than when the LED
 700	 * subsystem asks, we avoid messing with the Asus ACPI stuff during a
 701	 * potentially bad time, such as a timer interrupt.
 702	 */
 703	asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
 704	if (!asus->led_workqueue)
 705		return -ENOMEM;
 706
 707	if (asus->wled_type == TYPE_LED)
 708		r = asus_led_register(asus, &asus->wled, "asus::wlan",
 709				      METHOD_WLAN);
 710	if (r)
 711		goto error;
 712	if (asus->bled_type == TYPE_LED)
 713		r = asus_led_register(asus, &asus->bled, "asus::bluetooth",
 714				      METHOD_BLUETOOTH);
 715	if (r)
 716		goto error;
 717	r = asus_led_register(asus, &asus->mled, "asus::mail", METHOD_MLED);
 718	if (r)
 719		goto error;
 720	r = asus_led_register(asus, &asus->tled, "asus::touchpad", METHOD_TLED);
 721	if (r)
 722		goto error;
 723	r = asus_led_register(asus, &asus->rled, "asus::record", METHOD_RLED);
 724	if (r)
 725		goto error;
 726	r = asus_led_register(asus, &asus->pled, "asus::phone", METHOD_PLED);
 727	if (r)
 728		goto error;
 729	r = asus_led_register(asus, &asus->gled, "asus::gaming", METHOD_GLED);
 730	if (r)
 731		goto error;
 732	if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL) &&
 733	    !acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_GET, NULL)) {
 734		struct asus_led *led = &asus->kled;
 735		struct led_classdev *cdev = &led->led;
 736
 737		led->asus = asus;
 738
 739		INIT_WORK(&led->work, asus_kled_cdev_update);
 740		cdev->name = "asus::kbd_backlight";
 741		cdev->brightness_set = asus_kled_cdev_set;
 742		cdev->brightness_get = asus_kled_cdev_get;
 743		cdev->max_brightness = 3;
 744		r = led_classdev_register(&asus->platform_device->dev, cdev);
 745	}
 746error:
 747	if (r)
 748		asus_led_exit(asus);
 749	return r;
 750}
 751
 752/*
 753 * Backlight device
 754 */
 755static int asus_read_brightness(struct backlight_device *bd)
 756{
 757	struct asus_laptop *asus = bl_get_data(bd);
 758	unsigned long long value;
 759	acpi_status rv;
 760
 761	rv = acpi_evaluate_integer(asus->handle, METHOD_BRIGHTNESS_GET,
 762				   NULL, &value);
 763	if (ACPI_FAILURE(rv)) {
 764		pr_warn("Error reading brightness\n");
 765		return 0;
 766	}
 767
 768	return value;
 769}
 770
 771static int asus_set_brightness(struct backlight_device *bd, int value)
 772{
 773	struct asus_laptop *asus = bl_get_data(bd);
 774
 775	if (write_acpi_int(asus->handle, METHOD_BRIGHTNESS_SET, value)) {
 776		pr_warn("Error changing brightness\n");
 777		return -EIO;
 778	}
 779	return 0;
 780}
 781
 782static int update_bl_status(struct backlight_device *bd)
 783{
 784	int value = bd->props.brightness;
 785
 786	return asus_set_brightness(bd, value);
 787}
 788
 789static const struct backlight_ops asusbl_ops = {
 790	.get_brightness = asus_read_brightness,
 791	.update_status = update_bl_status,
 792};
 793
 794static int asus_backlight_notify(struct asus_laptop *asus)
 795{
 796	struct backlight_device *bd = asus->backlight_device;
 797	int old = bd->props.brightness;
 798
 799	backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
 800
 801	return old;
 802}
 803
 804static int asus_backlight_init(struct asus_laptop *asus)
 805{
 806	struct backlight_device *bd;
 807	struct backlight_properties props;
 808
 809	if (acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_GET, NULL) ||
 810	    acpi_check_handle(asus->handle, METHOD_BRIGHTNESS_SET, NULL))
 811		return 0;
 812
 813	memset(&props, 0, sizeof(struct backlight_properties));
 814	props.max_brightness = 15;
 815	props.type = BACKLIGHT_PLATFORM;
 816
 817	bd = backlight_device_register(ASUS_LAPTOP_FILE,
 818				       &asus->platform_device->dev, asus,
 819				       &asusbl_ops, &props);
 820	if (IS_ERR(bd)) {
 821		pr_err("Could not register asus backlight device\n");
 822		asus->backlight_device = NULL;
 823		return PTR_ERR(bd);
 824	}
 825
 826	asus->backlight_device = bd;
 827	bd->props.brightness = asus_read_brightness(bd);
 828	bd->props.power = FB_BLANK_UNBLANK;
 829	backlight_update_status(bd);
 830	return 0;
 831}
 832
 833static void asus_backlight_exit(struct asus_laptop *asus)
 834{
 835	backlight_device_unregister(asus->backlight_device);
 836	asus->backlight_device = NULL;
 837}
 838
 839/*
 840 * Platform device handlers
 841 */
 842
 843/*
 844 * We write our info in page, we begin at offset off and cannot write more
 845 * than count bytes. We set eof to 1 if we handle those 2 values. We return the
 846 * number of bytes written in page
 847 */
 848static ssize_t infos_show(struct device *dev, struct device_attribute *attr,
 849			  char *page)
 850{
 851	struct asus_laptop *asus = dev_get_drvdata(dev);
 852	int len = 0;
 853	unsigned long long temp;
 854	char buf[16];		/* enough for all info */
 855	acpi_status rv;
 856
 857	/*
 858	 * We use the easy way, we don't care of off and count,
 859	 * so we don't set eof to 1
 860	 */
 861
 862	len += sprintf(page, ASUS_LAPTOP_NAME " " ASUS_LAPTOP_VERSION "\n");
 863	len += sprintf(page + len, "Model reference    : %s\n", asus->name);
 864	/*
 865	 * The SFUN method probably allows the original driver to get the list
 866	 * of features supported by a given model. For now, 0x0100 or 0x0800
 867	 * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
 868	 * The significance of others is yet to be found.
 869	 */
 870	rv = acpi_evaluate_integer(asus->handle, "SFUN", NULL, &temp);
 871	if (!ACPI_FAILURE(rv))
 872		len += sprintf(page + len, "SFUN value         : %#x\n",
 873			       (uint) temp);
 874	/*
 875	 * The HWRS method return informations about the hardware.
 876	 * 0x80 bit is for WLAN, 0x100 for Bluetooth.
 877	 * 0x40 for WWAN, 0x10 for WIMAX.
 878	 * The significance of others is yet to be found.
 879	 * We don't currently use this for device detection, and it
 880	 * takes several seconds to run on some systems.
 881	 */
 882	rv = acpi_evaluate_integer(asus->handle, "HWRS", NULL, &temp);
 883	if (!ACPI_FAILURE(rv))
 884		len += sprintf(page + len, "HWRS value         : %#x\n",
 885			       (uint) temp);
 886	/*
 887	 * Another value for userspace: the ASYM method returns 0x02 for
 888	 * battery low and 0x04 for battery critical, its readings tend to be
 889	 * more accurate than those provided by _BST.
 890	 * Note: since not all the laptops provide this method, errors are
 891	 * silently ignored.
 892	 */
 893	rv = acpi_evaluate_integer(asus->handle, "ASYM", NULL, &temp);
 894	if (!ACPI_FAILURE(rv))
 895		len += sprintf(page + len, "ASYM value         : %#x\n",
 896			       (uint) temp);
 897	if (asus->dsdt_info) {
 898		snprintf(buf, 16, "%d", asus->dsdt_info->length);
 899		len += sprintf(page + len, "DSDT length        : %s\n", buf);
 900		snprintf(buf, 16, "%d", asus->dsdt_info->checksum);
 901		len += sprintf(page + len, "DSDT checksum      : %s\n", buf);
 902		snprintf(buf, 16, "%d", asus->dsdt_info->revision);
 903		len += sprintf(page + len, "DSDT revision      : %s\n", buf);
 904		snprintf(buf, 7, "%s", asus->dsdt_info->oem_id);
 905		len += sprintf(page + len, "OEM id             : %s\n", buf);
 906		snprintf(buf, 9, "%s", asus->dsdt_info->oem_table_id);
 907		len += sprintf(page + len, "OEM table id       : %s\n", buf);
 908		snprintf(buf, 16, "%x", asus->dsdt_info->oem_revision);
 909		len += sprintf(page + len, "OEM revision       : 0x%s\n", buf);
 910		snprintf(buf, 5, "%s", asus->dsdt_info->asl_compiler_id);
 911		len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
 912		snprintf(buf, 16, "%x", asus->dsdt_info->asl_compiler_revision);
 913		len += sprintf(page + len, "ASL comp revision  : 0x%s\n", buf);
 914	}
 915
 916	return len;
 917}
 918static DEVICE_ATTR_RO(infos);
 919
 920static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
 921			      const char *buf, size_t count,
 922			      const char *method)
 923{
 924	int rv, value;
 925
 926	rv = kstrtoint(buf, 0, &value);
 927	if (rv < 0)
 928		return rv;
 929
 930	if (write_acpi_int(asus->handle, method, value))
 931		return -ENODEV;
 932	return count;
 933}
 934
 935/*
 936 * LEDD display
 937 */
 938static ssize_t ledd_show(struct device *dev, struct device_attribute *attr,
 939			 char *buf)
 940{
 941	struct asus_laptop *asus = dev_get_drvdata(dev);
 942
 943	return sprintf(buf, "0x%08x\n", asus->ledd_status);
 944}
 945
 946static ssize_t ledd_store(struct device *dev, struct device_attribute *attr,
 947			  const char *buf, size_t count)
 948{
 949	struct asus_laptop *asus = dev_get_drvdata(dev);
 950	int rv, value;
 951
 952	rv = kstrtoint(buf, 0, &value);
 953	if (rv < 0)
 954		return rv;
 955
 956	if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
 957		pr_warn("LED display write failed\n");
 958		return -ENODEV;
 959	}
 960
 961	asus->ledd_status = (u32) value;
 962	return count;
 963}
 964static DEVICE_ATTR_RW(ledd);
 965
 966/*
 967 * Wireless
 968 */
 969static int asus_wireless_status(struct asus_laptop *asus, int mask)
 970{
 971	unsigned long long status;
 972	acpi_status rv = AE_OK;
 973
 974	if (!asus->have_rsts)
 975		return (asus->wireless_status & mask) ? 1 : 0;
 976
 977	rv = acpi_evaluate_integer(asus->handle, METHOD_WL_STATUS,
 978				   NULL, &status);
 979	if (ACPI_FAILURE(rv)) {
 980		pr_warn("Error reading Wireless status\n");
 981		return -EINVAL;
 982	}
 983	return !!(status & mask);
 984}
 985
 986/*
 987 * WLAN
 988 */
 989static int asus_wlan_set(struct asus_laptop *asus, int status)
 990{
 991	if (write_acpi_int(asus->handle, METHOD_WLAN, !!status)) {
 992		pr_warn("Error setting wlan status to %d\n", status);
 993		return -EIO;
 994	}
 995	return 0;
 996}
 997
 998static ssize_t wlan_show(struct device *dev, struct device_attribute *attr,
 999			 char *buf)
1000{
1001	struct asus_laptop *asus = dev_get_drvdata(dev);
1002
1003	return sprintf(buf, "%d\n", asus_wireless_status(asus, WL_RSTS));
1004}
1005
1006static ssize_t wlan_store(struct device *dev, struct device_attribute *attr,
1007			  const char *buf, size_t count)
1008{
1009	struct asus_laptop *asus = dev_get_drvdata(dev);
1010
1011	return sysfs_acpi_set(asus, buf, count, METHOD_WLAN);
1012}
1013static DEVICE_ATTR_RW(wlan);
1014
1015/*e
1016 * Bluetooth
1017 */
1018static int asus_bluetooth_set(struct asus_laptop *asus, int status)
1019{
1020	if (write_acpi_int(asus->handle, METHOD_BLUETOOTH, !!status)) {
1021		pr_warn("Error setting bluetooth status to %d\n", status);
1022		return -EIO;
1023	}
1024	return 0;
1025}
1026
1027static ssize_t bluetooth_show(struct device *dev, struct device_attribute *attr,
1028			      char *buf)
1029{
1030	struct asus_laptop *asus = dev_get_drvdata(dev);
1031
1032	return sprintf(buf, "%d\n", asus_wireless_status(asus, BT_RSTS));
1033}
1034
1035static ssize_t bluetooth_store(struct device *dev,
1036			       struct device_attribute *attr, const char *buf,
1037			       size_t count)
1038{
1039	struct asus_laptop *asus = dev_get_drvdata(dev);
1040
1041	return sysfs_acpi_set(asus, buf, count, METHOD_BLUETOOTH);
1042}
1043static DEVICE_ATTR_RW(bluetooth);
1044
1045/*
1046 * Wimax
1047 */
1048static int asus_wimax_set(struct asus_laptop *asus, int status)
1049{
1050	if (write_acpi_int(asus->handle, METHOD_WIMAX, !!status)) {
1051		pr_warn("Error setting wimax status to %d\n", status);
1052		return -EIO;
1053	}
1054	return 0;
1055}
1056
1057static ssize_t wimax_show(struct device *dev, struct device_attribute *attr,
1058			  char *buf)
1059{
1060	struct asus_laptop *asus = dev_get_drvdata(dev);
1061
1062	return sprintf(buf, "%d\n", asus_wireless_status(asus, WM_RSTS));
1063}
1064
1065static ssize_t wimax_store(struct device *dev, struct device_attribute *attr,
1066			   const char *buf, size_t count)
1067{
1068	struct asus_laptop *asus = dev_get_drvdata(dev);
1069
1070	return sysfs_acpi_set(asus, buf, count, METHOD_WIMAX);
1071}
1072static DEVICE_ATTR_RW(wimax);
1073
1074/*
1075 * Wwan
1076 */
1077static int asus_wwan_set(struct asus_laptop *asus, int status)
1078{
1079	if (write_acpi_int(asus->handle, METHOD_WWAN, !!status)) {
1080		pr_warn("Error setting wwan status to %d\n", status);
1081		return -EIO;
1082	}
1083	return 0;
1084}
1085
1086static ssize_t wwan_show(struct device *dev, struct device_attribute *attr,
1087			 char *buf)
1088{
1089	struct asus_laptop *asus = dev_get_drvdata(dev);
1090
1091	return sprintf(buf, "%d\n", asus_wireless_status(asus, WW_RSTS));
1092}
1093
1094static ssize_t wwan_store(struct device *dev, struct device_attribute *attr,
1095			  const char *buf, size_t count)
1096{
1097	struct asus_laptop *asus = dev_get_drvdata(dev);
1098
1099	return sysfs_acpi_set(asus, buf, count, METHOD_WWAN);
1100}
1101static DEVICE_ATTR_RW(wwan);
1102
1103/*
1104 * Display
1105 */
1106static void asus_set_display(struct asus_laptop *asus, int value)
1107{
1108	/* no sanity check needed for now */
1109	if (write_acpi_int(asus->handle, METHOD_SWITCH_DISPLAY, value))
1110		pr_warn("Error setting display\n");
1111	return;
1112}
1113
1114/*
1115 * Experimental support for display switching. As of now: 1 should activate
1116 * the LCD output, 2 should do for CRT, 4 for TV-Out and 8 for DVI.
1117 * Any combination (bitwise) of these will suffice. I never actually tested 4
1118 * displays hooked up simultaneously, so be warned. See the acpi4asus README
1119 * for more info.
1120 */
1121static ssize_t display_store(struct device *dev, struct device_attribute *attr,
1122			     const char *buf, size_t count)
1123{
1124	struct asus_laptop *asus = dev_get_drvdata(dev);
1125	int rv, value;
1126
1127	rv = kstrtoint(buf, 0, &value);
1128	if (rv < 0)
1129		return rv;
1130
1131	asus_set_display(asus, value);
1132	return count;
1133}
1134static DEVICE_ATTR_WO(display);
1135
1136/*
1137 * Light Sens
1138 */
1139static void asus_als_switch(struct asus_laptop *asus, int value)
1140{
1141	int ret;
1142
1143	if (asus->is_pega_lucid) {
1144		ret = asus_pega_lucid_set(asus, PEGA_ALS, value);
1145		if (!ret)
1146			ret = asus_pega_lucid_set(asus, PEGA_ALS_POWER, value);
1147	} else {
1148		ret = write_acpi_int(asus->handle, METHOD_ALS_CONTROL, value);
1149	}
1150	if (ret)
1151		pr_warn("Error setting light sensor switch\n");
1152
1153	asus->light_switch = value;
1154}
1155
1156static ssize_t ls_switch_show(struct device *dev, struct device_attribute *attr,
1157			      char *buf)
1158{
1159	struct asus_laptop *asus = dev_get_drvdata(dev);
1160
1161	return sprintf(buf, "%d\n", asus->light_switch);
1162}
1163
1164static ssize_t ls_switch_store(struct device *dev,
1165			       struct device_attribute *attr, const char *buf,
1166			       size_t count)
1167{
1168	struct asus_laptop *asus = dev_get_drvdata(dev);
1169	int rv, value;
1170
1171	rv = kstrtoint(buf, 0, &value);
1172	if (rv < 0)
1173		return rv;
1174
1175	asus_als_switch(asus, value ? 1 : 0);
1176	return count;
1177}
1178static DEVICE_ATTR_RW(ls_switch);
1179
1180static void asus_als_level(struct asus_laptop *asus, int value)
1181{
1182	if (write_acpi_int(asus->handle, METHOD_ALS_LEVEL, value))
1183		pr_warn("Error setting light sensor level\n");
1184	asus->light_level = value;
1185}
1186
1187static ssize_t ls_level_show(struct device *dev, struct device_attribute *attr,
1188			     char *buf)
1189{
1190	struct asus_laptop *asus = dev_get_drvdata(dev);
1191
1192	return sprintf(buf, "%d\n", asus->light_level);
1193}
1194
1195static ssize_t ls_level_store(struct device *dev, struct device_attribute *attr,
1196			      const char *buf, size_t count)
1197{
1198	struct asus_laptop *asus = dev_get_drvdata(dev);
1199	int rv, value;
1200
1201	rv = kstrtoint(buf, 0, &value);
1202	if (rv < 0)
1203		return rv;
1204
1205	value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
1206	/* 0 <= value <= 15 */
1207	asus_als_level(asus, value);
1208
1209	return count;
1210}
1211static DEVICE_ATTR_RW(ls_level);
1212
1213static int pega_int_read(struct asus_laptop *asus, int arg, int *result)
1214{
1215	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1216	int err = write_acpi_int_ret(asus->handle, METHOD_PEGA_READ, arg,
1217				     &buffer);
1218	if (!err) {
1219		union acpi_object *obj = buffer.pointer;
1220		if (obj && obj->type == ACPI_TYPE_INTEGER)
1221			*result = obj->integer.value;
1222		else
1223			err = -EIO;
1224	}
1225	return err;
1226}
1227
1228static ssize_t ls_value_show(struct device *dev, struct device_attribute *attr,
1229			     char *buf)
1230{
1231	struct asus_laptop *asus = dev_get_drvdata(dev);
1232	int err, hi, lo;
1233
1234	err = pega_int_read(asus, PEGA_READ_ALS_H, &hi);
1235	if (!err)
1236		err = pega_int_read(asus, PEGA_READ_ALS_L, &lo);
1237	if (!err)
1238		return sprintf(buf, "%d\n", 10 * hi + lo);
1239	return err;
1240}
1241static DEVICE_ATTR_RO(ls_value);
1242
1243/*
1244 * GPS
1245 */
1246static int asus_gps_status(struct asus_laptop *asus)
1247{
1248	unsigned long long status;
1249	acpi_status rv;
1250
1251	rv = acpi_evaluate_integer(asus->handle, METHOD_GPS_STATUS,
1252				   NULL, &status);
1253	if (ACPI_FAILURE(rv)) {
1254		pr_warn("Error reading GPS status\n");
1255		return -ENODEV;
1256	}
1257	return !!status;
1258}
1259
1260static int asus_gps_switch(struct asus_laptop *asus, int status)
1261{
1262	const char *meth = status ? METHOD_GPS_ON : METHOD_GPS_OFF;
1263
1264	if (write_acpi_int(asus->handle, meth, 0x02))
1265		return -ENODEV;
1266	return 0;
1267}
1268
1269static ssize_t gps_show(struct device *dev, struct device_attribute *attr,
1270			char *buf)
1271{
1272	struct asus_laptop *asus = dev_get_drvdata(dev);
1273
1274	return sprintf(buf, "%d\n", asus_gps_status(asus));
1275}
1276
1277static ssize_t gps_store(struct device *dev, struct device_attribute *attr,
1278			 const char *buf, size_t count)
1279{
1280	struct asus_laptop *asus = dev_get_drvdata(dev);
1281	int rv, value;
1282	int ret;
1283
1284	rv = kstrtoint(buf, 0, &value);
1285	if (rv < 0)
1286		return rv;
1287	ret = asus_gps_switch(asus, !!value);
1288	if (ret)
1289		return ret;
1290	rfkill_set_sw_state(asus->gps.rfkill, !value);
1291	return count;
1292}
1293static DEVICE_ATTR_RW(gps);
1294
1295/*
1296 * rfkill
1297 */
1298static int asus_gps_rfkill_set(void *data, bool blocked)
1299{
1300	struct asus_laptop *asus = data;
1301
1302	return asus_gps_switch(asus, !blocked);
1303}
1304
1305static const struct rfkill_ops asus_gps_rfkill_ops = {
1306	.set_block = asus_gps_rfkill_set,
1307};
1308
1309static int asus_rfkill_set(void *data, bool blocked)
1310{
1311	struct asus_rfkill *rfk = data;
1312	struct asus_laptop *asus = rfk->asus;
1313
1314	if (rfk->control_id == WL_RSTS)
1315		return asus_wlan_set(asus, !blocked);
1316	else if (rfk->control_id == BT_RSTS)
1317		return asus_bluetooth_set(asus, !blocked);
1318	else if (rfk->control_id == WM_RSTS)
1319		return asus_wimax_set(asus, !blocked);
1320	else if (rfk->control_id == WW_RSTS)
1321		return asus_wwan_set(asus, !blocked);
1322
1323	return -EINVAL;
1324}
1325
1326static const struct rfkill_ops asus_rfkill_ops = {
1327	.set_block = asus_rfkill_set,
1328};
1329
1330static void asus_rfkill_terminate(struct asus_rfkill *rfk)
1331{
1332	if (!rfk->rfkill)
1333		return ;
1334
1335	rfkill_unregister(rfk->rfkill);
1336	rfkill_destroy(rfk->rfkill);
1337	rfk->rfkill = NULL;
1338}
1339
1340static void asus_rfkill_exit(struct asus_laptop *asus)
1341{
1342	asus_rfkill_terminate(&asus->wwan);
1343	asus_rfkill_terminate(&asus->bluetooth);
1344	asus_rfkill_terminate(&asus->wlan);
1345	asus_rfkill_terminate(&asus->gps);
1346}
1347
1348static int asus_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1349			     const char *name, int control_id, int type,
1350			     const struct rfkill_ops *ops)
1351{
1352	int result;
1353
1354	rfk->control_id = control_id;
1355	rfk->asus = asus;
1356	rfk->rfkill = rfkill_alloc(name, &asus->platform_device->dev,
1357				   type, ops, rfk);
1358	if (!rfk->rfkill)
1359		return -EINVAL;
1360
1361	result = rfkill_register(rfk->rfkill);
1362	if (result) {
1363		rfkill_destroy(rfk->rfkill);
1364		rfk->rfkill = NULL;
1365	}
1366
1367	return result;
1368}
1369
1370static int asus_rfkill_init(struct asus_laptop *asus)
1371{
1372	int result = 0;
1373
1374	if (asus->is_pega_lucid)
1375		return -ENODEV;
1376
1377	if (!acpi_check_handle(asus->handle, METHOD_GPS_ON, NULL) &&
1378	    !acpi_check_handle(asus->handle, METHOD_GPS_OFF, NULL) &&
1379	    !acpi_check_handle(asus->handle, METHOD_GPS_STATUS, NULL))
1380		result = asus_rfkill_setup(asus, &asus->gps, "asus-gps",
1381					   -1, RFKILL_TYPE_GPS,
1382					   &asus_gps_rfkill_ops);
1383	if (result)
1384		goto exit;
1385
1386
1387	if (!acpi_check_handle(asus->handle, METHOD_WLAN, NULL) &&
1388	    asus->wled_type == TYPE_RFKILL)
1389		result = asus_rfkill_setup(asus, &asus->wlan, "asus-wlan",
1390					   WL_RSTS, RFKILL_TYPE_WLAN,
1391					   &asus_rfkill_ops);
1392	if (result)
1393		goto exit;
1394
1395	if (!acpi_check_handle(asus->handle, METHOD_BLUETOOTH, NULL) &&
1396	    asus->bled_type == TYPE_RFKILL)
1397		result = asus_rfkill_setup(asus, &asus->bluetooth,
1398					   "asus-bluetooth", BT_RSTS,
1399					   RFKILL_TYPE_BLUETOOTH,
1400					   &asus_rfkill_ops);
1401	if (result)
1402		goto exit;
1403
1404	if (!acpi_check_handle(asus->handle, METHOD_WWAN, NULL))
1405		result = asus_rfkill_setup(asus, &asus->wwan, "asus-wwan",
1406					   WW_RSTS, RFKILL_TYPE_WWAN,
1407					   &asus_rfkill_ops);
1408	if (result)
1409		goto exit;
1410
1411	if (!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL))
1412		result = asus_rfkill_setup(asus, &asus->wimax, "asus-wimax",
1413					   WM_RSTS, RFKILL_TYPE_WIMAX,
1414					   &asus_rfkill_ops);
1415	if (result)
1416		goto exit;
1417
1418exit:
1419	if (result)
1420		asus_rfkill_exit(asus);
1421
1422	return result;
1423}
1424
1425static int pega_rfkill_set(void *data, bool blocked)
1426{
1427	struct asus_rfkill *rfk = data;
1428
1429	int ret = asus_pega_lucid_set(rfk->asus, rfk->control_id, !blocked);
1430	return ret;
1431}
1432
1433static const struct rfkill_ops pega_rfkill_ops = {
1434	.set_block = pega_rfkill_set,
1435};
1436
1437static int pega_rfkill_setup(struct asus_laptop *asus, struct asus_rfkill *rfk,
1438			     const char *name, int controlid, int rfkill_type)
1439{
1440	return asus_rfkill_setup(asus, rfk, name, controlid, rfkill_type,
1441				 &pega_rfkill_ops);
1442}
1443
1444static int pega_rfkill_init(struct asus_laptop *asus)
1445{
1446	int ret = 0;
1447
1448	if(!asus->is_pega_lucid)
1449		return -ENODEV;
1450
1451	ret = pega_rfkill_setup(asus, &asus->wlan, "pega-wlan",
1452				PEGA_WLAN, RFKILL_TYPE_WLAN);
1453	if(ret)
1454		goto exit;
1455
1456	ret = pega_rfkill_setup(asus, &asus->bluetooth, "pega-bt",
1457				PEGA_BLUETOOTH, RFKILL_TYPE_BLUETOOTH);
1458	if(ret)
1459		goto exit;
1460
1461	ret = pega_rfkill_setup(asus, &asus->wwan, "pega-wwan",
1462				PEGA_WWAN, RFKILL_TYPE_WWAN);
1463
1464exit:
1465	if (ret)
1466		asus_rfkill_exit(asus);
1467
1468	return ret;
1469}
1470
1471/*
1472 * Input device (i.e. hotkeys)
1473 */
1474static void asus_input_notify(struct asus_laptop *asus, int event)
1475{
1476	if (!asus->inputdev)
1477		return ;
1478	if (!sparse_keymap_report_event(asus->inputdev, event, 1, true))
1479		pr_info("Unknown key %x pressed\n", event);
1480}
1481
1482static int asus_input_init(struct asus_laptop *asus)
1483{
1484	struct input_dev *input;
1485	int error;
1486
1487	input = input_allocate_device();
1488	if (!input)
1489		return -ENOMEM;
1490
1491	input->name = "Asus Laptop extra buttons";
1492	input->phys = ASUS_LAPTOP_FILE "/input0";
1493	input->id.bustype = BUS_HOST;
1494	input->dev.parent = &asus->platform_device->dev;
1495
1496	error = sparse_keymap_setup(input, asus_keymap, NULL);
1497	if (error) {
1498		pr_err("Unable to setup input device keymap\n");
1499		goto err_free_dev;
1500	}
1501	error = input_register_device(input);
1502	if (error) {
1503		pr_warn("Unable to register input device\n");
1504		goto err_free_dev;
1505	}
1506
1507	asus->inputdev = input;
1508	return 0;
1509
1510err_free_dev:
1511	input_free_device(input);
1512	return error;
1513}
1514
1515static void asus_input_exit(struct asus_laptop *asus)
1516{
1517	if (asus->inputdev)
1518		input_unregister_device(asus->inputdev);
1519	asus->inputdev = NULL;
1520}
1521
1522/*
1523 * ACPI driver
1524 */
1525static void asus_acpi_notify(struct acpi_device *device, u32 event)
1526{
1527	struct asus_laptop *asus = acpi_driver_data(device);
1528	u16 count;
1529
1530	/* TODO Find a better way to handle events count. */
1531	count = asus->event_count[event % 128]++;
1532	acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
1533					dev_name(&asus->device->dev), event,
1534					count);
1535
1536	if (event >= ATKD_BRNUP_MIN && event <= ATKD_BRNUP_MAX)
1537		event = ATKD_BRNUP;
1538	else if (event >= ATKD_BRNDOWN_MIN &&
1539		 event <= ATKD_BRNDOWN_MAX)
1540		event = ATKD_BRNDOWN;
1541
1542	/* Brightness events are special */
1543	if (event == ATKD_BRNDOWN || event == ATKD_BRNUP) {
1544		if (asus->backlight_device != NULL) {
1545			/* Update the backlight device. */
1546			asus_backlight_notify(asus);
1547			return ;
1548		}
1549	}
1550
1551	/* Accelerometer "coarse orientation change" event */
1552	if (asus->pega_accel_poll && event == 0xEA) {
1553		kobject_uevent(&asus->pega_accel_poll->dev.kobj, KOBJ_CHANGE);
1554		return ;
1555	}
1556
1557	asus_input_notify(asus, event);
1558}
1559
1560static struct attribute *asus_attributes[] = {
1561	&dev_attr_infos.attr,
1562	&dev_attr_wlan.attr,
1563	&dev_attr_bluetooth.attr,
1564	&dev_attr_wimax.attr,
1565	&dev_attr_wwan.attr,
1566	&dev_attr_display.attr,
1567	&dev_attr_ledd.attr,
1568	&dev_attr_ls_value.attr,
1569	&dev_attr_ls_level.attr,
1570	&dev_attr_ls_switch.attr,
1571	&dev_attr_gps.attr,
1572	NULL
1573};
1574
1575static umode_t asus_sysfs_is_visible(struct kobject *kobj,
1576				    struct attribute *attr,
1577				    int idx)
1578{
1579	struct device *dev = container_of(kobj, struct device, kobj);
1580	struct asus_laptop *asus = dev_get_drvdata(dev);
1581	acpi_handle handle = asus->handle;
1582	bool supported;
1583
1584	if (asus->is_pega_lucid) {
1585		/* no ls_level interface on the Lucid */
1586		if (attr == &dev_attr_ls_switch.attr)
1587			supported = true;
1588		else if (attr == &dev_attr_ls_level.attr)
1589			supported = false;
1590		else
1591			goto normal;
1592
1593		return supported ? attr->mode : 0;
1594	}
1595
1596normal:
1597	if (attr == &dev_attr_wlan.attr) {
1598		supported = !acpi_check_handle(handle, METHOD_WLAN, NULL);
1599
1600	} else if (attr == &dev_attr_bluetooth.attr) {
1601		supported = !acpi_check_handle(handle, METHOD_BLUETOOTH, NULL);
1602
1603	} else if (attr == &dev_attr_display.attr) {
1604		supported = !acpi_check_handle(handle, METHOD_SWITCH_DISPLAY, NULL);
1605
1606	} else if (attr == &dev_attr_wimax.attr) {
1607		supported =
1608			!acpi_check_handle(asus->handle, METHOD_WIMAX, NULL);
1609
1610	} else if (attr == &dev_attr_wwan.attr) {
1611		supported = !acpi_check_handle(asus->handle, METHOD_WWAN, NULL);
1612
1613	} else if (attr == &dev_attr_ledd.attr) {
1614		supported = !acpi_check_handle(handle, METHOD_LEDD, NULL);
1615
1616	} else if (attr == &dev_attr_ls_switch.attr ||
1617		   attr == &dev_attr_ls_level.attr) {
1618		supported = !acpi_check_handle(handle, METHOD_ALS_CONTROL, NULL) &&
1619			!acpi_check_handle(handle, METHOD_ALS_LEVEL, NULL);
1620	} else if (attr == &dev_attr_ls_value.attr) {
1621		supported = asus->is_pega_lucid;
1622	} else if (attr == &dev_attr_gps.attr) {
1623		supported = !acpi_check_handle(handle, METHOD_GPS_ON, NULL) &&
1624			    !acpi_check_handle(handle, METHOD_GPS_OFF, NULL) &&
1625			    !acpi_check_handle(handle, METHOD_GPS_STATUS, NULL);
1626	} else {
1627		supported = true;
1628	}
1629
1630	return supported ? attr->mode : 0;
1631}
1632
1633
1634static const struct attribute_group asus_attr_group = {
1635	.is_visible	= asus_sysfs_is_visible,
1636	.attrs		= asus_attributes,
1637};
1638
1639static int asus_platform_init(struct asus_laptop *asus)
1640{
1641	int result;
1642
1643	asus->platform_device = platform_device_alloc(ASUS_LAPTOP_FILE, -1);
1644	if (!asus->platform_device)
1645		return -ENOMEM;
1646	platform_set_drvdata(asus->platform_device, asus);
1647
1648	result = platform_device_add(asus->platform_device);
1649	if (result)
1650		goto fail_platform_device;
1651
1652	result = sysfs_create_group(&asus->platform_device->dev.kobj,
1653				    &asus_attr_group);
1654	if (result)
1655		goto fail_sysfs;
1656
1657	return 0;
1658
1659fail_sysfs:
1660	platform_device_del(asus->platform_device);
1661fail_platform_device:
1662	platform_device_put(asus->platform_device);
1663	return result;
1664}
1665
1666static void asus_platform_exit(struct asus_laptop *asus)
1667{
1668	sysfs_remove_group(&asus->platform_device->dev.kobj, &asus_attr_group);
1669	platform_device_unregister(asus->platform_device);
1670}
1671
1672static struct platform_driver platform_driver = {
1673	.driver = {
1674		.name = ASUS_LAPTOP_FILE,
1675	},
1676};
1677
1678/*
1679 * This function is used to initialize the context with right values. In this
1680 * method, we can make all the detection we want, and modify the asus_laptop
1681 * struct
1682 */
1683static int asus_laptop_get_info(struct asus_laptop *asus)
1684{
1685	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1686	union acpi_object *model = NULL;
1687	unsigned long long bsts_result;
1688	char *string = NULL;
1689	acpi_status status;
1690
1691	/*
1692	 * Get DSDT headers early enough to allow for differentiating between
1693	 * models, but late enough to allow acpi_bus_register_driver() to fail
1694	 * before doing anything ACPI-specific. Should we encounter a machine,
1695	 * which needs special handling (i.e. its hotkey device has a different
1696	 * HID), this bit will be moved.
1697	 */
1698	status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus->dsdt_info);
1699	if (ACPI_FAILURE(status))
1700		pr_warn("Couldn't get the DSDT table header\n");
1701
1702	/* We have to write 0 on init this far for all ASUS models */
1703	if (write_acpi_int_ret(asus->handle, "INIT", 0, &buffer)) {
1704		pr_err("Hotkey initialization failed\n");
1705		return -ENODEV;
1706	}
1707
1708	/* This needs to be called for some laptops to init properly */
1709	status =
1710	    acpi_evaluate_integer(asus->handle, "BSTS", NULL, &bsts_result);
1711	if (ACPI_FAILURE(status))
1712		pr_warn("Error calling BSTS\n");
1713	else if (bsts_result)
1714		pr_notice("BSTS called, 0x%02x returned\n",
1715		       (uint) bsts_result);
1716
1717	/* This too ... */
1718	if (write_acpi_int(asus->handle, "CWAP", wapf))
1719		pr_err("Error calling CWAP(%d)\n", wapf);
1720	/*
1721	 * Try to match the object returned by INIT to the specific model.
1722	 * Handle every possible object (or the lack of thereof) the DSDT
1723	 * writers might throw at us. When in trouble, we pass NULL to
1724	 * asus_model_match() and try something completely different.
1725	 */
1726	if (buffer.pointer) {
1727		model = buffer.pointer;
1728		switch (model->type) {
1729		case ACPI_TYPE_STRING:
1730			string = model->string.pointer;
1731			break;
1732		case ACPI_TYPE_BUFFER:
1733			string = model->buffer.pointer;
1734			break;
1735		default:
1736			string = "";
1737			break;
1738		}
1739	}
1740	asus->name = kstrdup(string, GFP_KERNEL);
1741	if (!asus->name) {
1742		kfree(buffer.pointer);
1743		return -ENOMEM;
1744	}
1745
1746	if (string)
1747		pr_notice("  %s model detected\n", string);
1748
1749	if (!acpi_check_handle(asus->handle, METHOD_WL_STATUS, NULL))
1750		asus->have_rsts = true;
1751
1752	kfree(model);
1753
1754	return AE_OK;
1755}
1756
1757static int asus_acpi_init(struct asus_laptop *asus)
1758{
1759	int result = 0;
1760
1761	result = acpi_bus_get_status(asus->device);
1762	if (result)
1763		return result;
1764	if (!asus->device->status.present) {
1765		pr_err("Hotkey device not present, aborting\n");
1766		return -ENODEV;
1767	}
1768
1769	result = asus_laptop_get_info(asus);
1770	if (result)
1771		return result;
1772
1773	if (!strcmp(bled_type, "led"))
1774		asus->bled_type = TYPE_LED;
1775	else if (!strcmp(bled_type, "rfkill"))
1776		asus->bled_type = TYPE_RFKILL;
1777
1778	if (!strcmp(wled_type, "led"))
1779		asus->wled_type = TYPE_LED;
1780	else if (!strcmp(wled_type, "rfkill"))
1781		asus->wled_type = TYPE_RFKILL;
1782
1783	if (bluetooth_status >= 0)
1784		asus_bluetooth_set(asus, !!bluetooth_status);
1785
1786	if (wlan_status >= 0)
1787		asus_wlan_set(asus, !!wlan_status);
1788
1789	if (wimax_status >= 0)
1790		asus_wimax_set(asus, !!wimax_status);
1791
1792	if (wwan_status >= 0)
1793		asus_wwan_set(asus, !!wwan_status);
1794
1795	/* Keyboard Backlight is on by default */
1796	if (!acpi_check_handle(asus->handle, METHOD_KBD_LIGHT_SET, NULL))
1797		asus_kled_set(asus, 1);
1798
1799	/* LED display is off by default */
1800	asus->ledd_status = 0xFFF;
1801
1802	/* Set initial values of light sensor and level */
1803	asus->light_switch = !!als_status;
1804	asus->light_level = 5;	/* level 5 for sensor sensitivity */
1805
1806	if (asus->is_pega_lucid) {
1807		asus_als_switch(asus, asus->light_switch);
1808	} else if (!acpi_check_handle(asus->handle, METHOD_ALS_CONTROL, NULL) &&
1809		   !acpi_check_handle(asus->handle, METHOD_ALS_LEVEL, NULL)) {
1810		asus_als_switch(asus, asus->light_switch);
1811		asus_als_level(asus, asus->light_level);
1812	}
1813
1814	return result;
1815}
1816
1817static void asus_dmi_check(void)
1818{
1819	const char *model;
1820
1821	model = dmi_get_system_info(DMI_PRODUCT_NAME);
1822	if (!model)
1823		return;
1824
1825	/* On L1400B WLED control the sound card, don't mess with it ... */
1826	if (strncmp(model, "L1400B", 6) == 0) {
1827		wlan_status = -1;
1828	}
1829}
1830
1831static bool asus_device_present;
1832
1833static int asus_acpi_add(struct acpi_device *device)
1834{
1835	struct asus_laptop *asus;
1836	int result;
1837
1838	pr_notice("Asus Laptop Support version %s\n",
1839		  ASUS_LAPTOP_VERSION);
1840	asus = kzalloc(sizeof(struct asus_laptop), GFP_KERNEL);
1841	if (!asus)
1842		return -ENOMEM;
1843	asus->handle = device->handle;
1844	strcpy(acpi_device_name(device), ASUS_LAPTOP_DEVICE_NAME);
1845	strcpy(acpi_device_class(device), ASUS_LAPTOP_CLASS);
1846	device->driver_data = asus;
1847	asus->device = device;
1848
1849	asus_dmi_check();
1850
1851	result = asus_acpi_init(asus);
1852	if (result)
1853		goto fail_platform;
1854
1855	/*
1856	 * Need pla…

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