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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  HID driver for Asus notebook built-in keyboard.
   4 *  Fixes small logical maximum to match usage maximum.
   5 *
   6 *  Currently supported devices are:
   7 *    EeeBook X205TA
   8 *    VivoBook E200HA
   9 *
  10 *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
  11 *
  12 *  This module based on hid-ortek by
  13 *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
  14 *  Copyright (c) 2011 Jiri Kosina
  15 *
  16 *  This module has been updated to add support for Asus i2c touchpad.
  17 *
  18 *  Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
  19 *  Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
  20 *  Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
  21 */
  22
  23/*
  24 */
  25
  26#include <linux/dmi.h>
  27#include <linux/hid.h>
  28#include <linux/module.h>
  29#include <linux/platform_data/x86/asus-wmi.h>
  30#include <linux/input/mt.h>
  31#include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */
  32#include <linux/power_supply.h>
  33
  34#include "hid-ids.h"
  35
  36MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
  37MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
  38MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
  39MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
  40MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
  41
  42#define T100_TPAD_INTF 2
  43#define MEDION_E1239T_TPAD_INTF 1
  44
  45#define E1239T_TP_TOGGLE_REPORT_ID 0x05
  46#define T100CHI_MOUSE_REPORT_ID 0x06
  47#define FEATURE_REPORT_ID 0x0d
  48#define INPUT_REPORT_ID 0x5d
  49#define FEATURE_KBD_REPORT_ID 0x5a
  50#define FEATURE_KBD_REPORT_SIZE 16
  51#define FEATURE_KBD_LED_REPORT_ID1 0x5d
  52#define FEATURE_KBD_LED_REPORT_ID2 0x5e
  53
  54#define SUPPORT_KBD_BACKLIGHT BIT(0)
  55
  56#define MAX_TOUCH_MAJOR 8
  57#define MAX_PRESSURE 128
  58
  59#define BTN_LEFT_MASK 0x01
  60#define CONTACT_TOOL_TYPE_MASK 0x80
  61#define CONTACT_X_MSB_MASK 0xf0
  62#define CONTACT_Y_MSB_MASK 0x0f
  63#define CONTACT_TOUCH_MAJOR_MASK 0x07
  64#define CONTACT_PRESSURE_MASK 0x7f
  65
  66#define	BATTERY_REPORT_ID	(0x03)
  67#define	BATTERY_REPORT_SIZE	(1 + 8)
  68#define	BATTERY_LEVEL_MAX	((u8)255)
  69#define	BATTERY_STAT_DISCONNECT	(0)
  70#define	BATTERY_STAT_CHARGING	(1)
  71#define	BATTERY_STAT_FULL	(2)
  72
  73#define QUIRK_FIX_NOTEBOOK_REPORT	BIT(0)
  74#define QUIRK_NO_INIT_REPORTS		BIT(1)
  75#define QUIRK_SKIP_INPUT_MAPPING	BIT(2)
  76#define QUIRK_IS_MULTITOUCH		BIT(3)
  77#define QUIRK_NO_CONSUMER_USAGES	BIT(4)
  78#define QUIRK_USE_KBD_BACKLIGHT		BIT(5)
  79#define QUIRK_T100_KEYBOARD		BIT(6)
  80#define QUIRK_T100CHI			BIT(7)
  81#define QUIRK_G752_KEYBOARD		BIT(8)
  82#define QUIRK_T90CHI			BIT(9)
  83#define QUIRK_MEDION_E1239T		BIT(10)
  84#define QUIRK_ROG_NKEY_KEYBOARD		BIT(11)
  85#define QUIRK_ROG_CLAYMORE_II_KEYBOARD BIT(12)
  86
  87#define I2C_KEYBOARD_QUIRKS			(QUIRK_FIX_NOTEBOOK_REPORT | \
  88						 QUIRK_NO_INIT_REPORTS | \
  89						 QUIRK_NO_CONSUMER_USAGES)
  90#define I2C_TOUCHPAD_QUIRKS			(QUIRK_NO_INIT_REPORTS | \
  91						 QUIRK_SKIP_INPUT_MAPPING | \
  92						 QUIRK_IS_MULTITOUCH)
  93
  94#define TRKID_SGN       ((TRKID_MAX + 1) >> 1)
  95
  96struct asus_kbd_leds {
  97	struct led_classdev cdev;
  98	struct hid_device *hdev;
  99	struct work_struct work;
 100	unsigned int brightness;
 101	bool removed;
 102};
 103
 104struct asus_touchpad_info {
 105	int max_x;
 106	int max_y;
 107	int res_x;
 108	int res_y;
 109	int contact_size;
 110	int max_contacts;
 111	int report_size;
 112};
 113
 114struct asus_drvdata {
 115	unsigned long quirks;
 116	struct hid_device *hdev;
 117	struct input_dev *input;
 118	struct input_dev *tp_kbd_input;
 119	struct asus_kbd_leds *kbd_backlight;
 120	const struct asus_touchpad_info *tp;
 121	bool enable_backlight;
 122	struct power_supply *battery;
 123	struct power_supply_desc battery_desc;
 124	int battery_capacity;
 125	int battery_stat;
 126	bool battery_in_query;
 127	unsigned long battery_next_query;
 128};
 129
 130static int asus_report_battery(struct asus_drvdata *, u8 *, int);
 131
 132static const struct asus_touchpad_info asus_i2c_tp = {
 133	.max_x = 2794,
 134	.max_y = 1758,
 135	.contact_size = 5,
 136	.max_contacts = 5,
 137	.report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 138};
 139
 140static const struct asus_touchpad_info asus_t100ta_tp = {
 141	.max_x = 2240,
 142	.max_y = 1120,
 143	.res_x = 30, /* units/mm */
 144	.res_y = 27, /* units/mm */
 145	.contact_size = 5,
 146	.max_contacts = 5,
 147	.report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 148};
 149
 150static const struct asus_touchpad_info asus_t100ha_tp = {
 151	.max_x = 2640,
 152	.max_y = 1320,
 153	.res_x = 30, /* units/mm */
 154	.res_y = 29, /* units/mm */
 155	.contact_size = 5,
 156	.max_contacts = 5,
 157	.report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 158};
 159
 160static const struct asus_touchpad_info asus_t200ta_tp = {
 161	.max_x = 3120,
 162	.max_y = 1716,
 163	.res_x = 30, /* units/mm */
 164	.res_y = 28, /* units/mm */
 165	.contact_size = 5,
 166	.max_contacts = 5,
 167	.report_size = 28 /* 2 byte header + 5 * 5 + 1 byte footer */,
 168};
 169
 170static const struct asus_touchpad_info asus_t100chi_tp = {
 171	.max_x = 2640,
 172	.max_y = 1320,
 173	.res_x = 31, /* units/mm */
 174	.res_y = 29, /* units/mm */
 175	.contact_size = 3,
 176	.max_contacts = 4,
 177	.report_size = 15 /* 2 byte header + 3 * 4 + 1 byte footer */,
 178};
 179
 180static const struct asus_touchpad_info medion_e1239t_tp = {
 181	.max_x = 2640,
 182	.max_y = 1380,
 183	.res_x = 29, /* units/mm */
 184	.res_y = 28, /* units/mm */
 185	.contact_size = 5,
 186	.max_contacts = 5,
 187	.report_size = 32 /* 2 byte header + 5 * 5 + 5 byte footer */,
 188};
 189
 190static void asus_report_contact_down(struct asus_drvdata *drvdat,
 191		int toolType, u8 *data)
 192{
 193	struct input_dev *input = drvdat->input;
 194	int touch_major, pressure, x, y;
 195
 196	x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
 197	y = drvdat->tp->max_y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
 198
 199	input_report_abs(input, ABS_MT_POSITION_X, x);
 200	input_report_abs(input, ABS_MT_POSITION_Y, y);
 201
 202	if (drvdat->tp->contact_size < 5)
 203		return;
 204
 205	if (toolType == MT_TOOL_PALM) {
 206		touch_major = MAX_TOUCH_MAJOR;
 207		pressure = MAX_PRESSURE;
 208	} else {
 209		touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
 210		pressure = data[4] & CONTACT_PRESSURE_MASK;
 211	}
 212
 213	input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
 214	input_report_abs(input, ABS_MT_PRESSURE, pressure);
 215}
 216
 217/* Required for Synaptics Palm Detection */
 218static void asus_report_tool_width(struct asus_drvdata *drvdat)
 219{
 220	struct input_mt *mt = drvdat->input->mt;
 221	struct input_mt_slot *oldest;
 222	int oldid, i;
 223
 224	if (drvdat->tp->contact_size < 5)
 225		return;
 226
 227	oldest = NULL;
 228	oldid = mt->trkid;
 229
 230	for (i = 0; i < mt->num_slots; ++i) {
 231		struct input_mt_slot *ps = &mt->slots[i];
 232		int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
 233
 234		if (id < 0)
 235			continue;
 236		if ((id - oldid) & TRKID_SGN) {
 237			oldest = ps;
 238			oldid = id;
 239		}
 240	}
 241
 242	if (oldest) {
 243		input_report_abs(drvdat->input, ABS_TOOL_WIDTH,
 244			input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
 245	}
 246}
 247
 248static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
 249{
 250	int i, toolType = MT_TOOL_FINGER;
 251	u8 *contactData = data + 2;
 252
 253	if (size != drvdat->tp->report_size)
 254		return 0;
 255
 256	for (i = 0; i < drvdat->tp->max_contacts; i++) {
 257		bool down = !!(data[1] & BIT(i+3));
 258
 259		if (drvdat->tp->contact_size >= 5)
 260			toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
 261						MT_TOOL_PALM : MT_TOOL_FINGER;
 262
 263		input_mt_slot(drvdat->input, i);
 264		input_mt_report_slot_state(drvdat->input, toolType, down);
 265
 266		if (down) {
 267			asus_report_contact_down(drvdat, toolType, contactData);
 268			contactData += drvdat->tp->contact_size;
 269		}
 270	}
 271
 272	input_report_key(drvdat->input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
 273	asus_report_tool_width(drvdat);
 274
 275	input_mt_sync_frame(drvdat->input);
 276	input_sync(drvdat->input);
 277
 278	return 1;
 279}
 280
 281static int asus_e1239t_event(struct asus_drvdata *drvdat, u8 *data, int size)
 282{
 283	if (size != 3)
 284		return 0;
 285
 286	/* Handle broken mute key which only sends press events */
 287	if (!drvdat->tp &&
 288	    data[0] == 0x02 && data[1] == 0xe2 && data[2] == 0x00) {
 289		input_report_key(drvdat->input, KEY_MUTE, 1);
 290		input_sync(drvdat->input);
 291		input_report_key(drvdat->input, KEY_MUTE, 0);
 292		input_sync(drvdat->input);
 293		return 1;
 294	}
 295
 296	/* Handle custom touchpad toggle key which only sends press events */
 297	if (drvdat->tp_kbd_input &&
 298	    data[0] == 0x05 && data[1] == 0x02 && data[2] == 0x28) {
 299		input_report_key(drvdat->tp_kbd_input, KEY_F21, 1);
 300		input_sync(drvdat->tp_kbd_input);
 301		input_report_key(drvdat->tp_kbd_input, KEY_F21, 0);
 302		input_sync(drvdat->tp_kbd_input);
 303		return 1;
 304	}
 305
 306	return 0;
 307}
 308
 309static int asus_event(struct hid_device *hdev, struct hid_field *field,
 310		      struct hid_usage *usage, __s32 value)
 311{
 312	if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
 313	    (usage->hid & HID_USAGE) != 0x00 &&
 314	    (usage->hid & HID_USAGE) != 0xff && !usage->type) {
 315		hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
 316			 usage->hid & HID_USAGE);
 317	}
 318
 319	return 0;
 320}
 321
 322static int asus_raw_event(struct hid_device *hdev,
 323		struct hid_report *report, u8 *data, int size)
 324{
 325	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 326
 327	if (drvdata->battery && data[0] == BATTERY_REPORT_ID)
 328		return asus_report_battery(drvdata, data, size);
 329
 330	if (drvdata->tp && data[0] == INPUT_REPORT_ID)
 331		return asus_report_input(drvdata, data, size);
 332
 333	if (drvdata->quirks & QUIRK_MEDION_E1239T)
 334		return asus_e1239t_event(drvdata, data, size);
 335
 336	if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT) {
 337		/*
 338		 * Skip these report ID, the device emits a continuous stream associated
 339		 * with the AURA mode it is in which looks like an 'echo'.
 340		*/
 341		if (report->id == FEATURE_KBD_LED_REPORT_ID1 ||
 342				report->id == FEATURE_KBD_LED_REPORT_ID2) {
 343			return -1;
 344		/* Additional report filtering */
 345		} else if (report->id == FEATURE_KBD_REPORT_ID) {
 346			/*
 347			 * G14 and G15 send these codes on some keypresses with no
 348			 * discernable reason for doing so. We'll filter them out to avoid
 349			 * unmapped warning messages later.
 350			*/
 351			if (data[1] == 0xea || data[1] == 0xec || data[1] == 0x02 ||
 352					data[1] == 0x8a || data[1] == 0x9e) {
 353				return -1;
 354			}
 355		}
 356		if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
 357			/*
 358			 * G713 and G733 send these codes on some keypresses, depending on
 359			 * the key pressed it can trigger a shutdown event if not caught.
 360			*/
 361			if(data[0] == 0x02 && data[1] == 0x30) {
 362				return -1;
 363			}
 364		}
 365
 366	}
 367
 368	if (drvdata->quirks & QUIRK_ROG_CLAYMORE_II_KEYBOARD) {
 369		/*
 370		 * CLAYMORE II keyboard sends this packet when it goes to sleep
 371		 * this causes the whole system to go into suspend.
 372		*/
 373
 374		if(size == 2 && data[0] == 0x02 && data[1] == 0x00) {
 375			return -1;
 376		}
 377	}
 378
 379	return 0;
 380}
 381
 382static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
 383{
 384	unsigned char *dmabuf;
 385	int ret;
 386
 387	dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
 388	if (!dmabuf)
 389		return -ENOMEM;
 390
 391	/*
 392	 * The report ID should be set from the incoming buffer due to LED and key
 393	 * interfaces having different pages
 394	*/
 395	ret = hid_hw_raw_request(hdev, buf[0], dmabuf,
 396				 buf_size, HID_FEATURE_REPORT,
 397				 HID_REQ_SET_REPORT);
 398	kfree(dmabuf);
 399
 400	return ret;
 401}
 402
 403static int asus_kbd_init(struct hid_device *hdev)
 404{
 405	u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
 406		     0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 407	int ret;
 408
 409	ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 410	if (ret < 0)
 411		hid_err(hdev, "Asus failed to send init command: %d\n", ret);
 412
 413	return ret;
 414}
 415
 416static int asus_kbd_get_functions(struct hid_device *hdev,
 417				  unsigned char *kbd_func)
 418{
 419	u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
 420	u8 *readbuf;
 421	int ret;
 422
 423	ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
 424	if (ret < 0) {
 425		hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
 426		return ret;
 427	}
 428
 429	readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
 430	if (!readbuf)
 431		return -ENOMEM;
 432
 433	ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
 434				 FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
 435				 HID_REQ_GET_REPORT);
 436	if (ret < 0) {
 437		hid_err(hdev, "Asus failed to request functions: %d\n", ret);
 438		kfree(readbuf);
 439		return ret;
 440	}
 441
 442	*kbd_func = readbuf[6];
 443
 444	kfree(readbuf);
 445	return ret;
 446}
 447
 448static int rog_nkey_led_init(struct hid_device *hdev)
 449{
 450	u8 buf_init_start[] = { FEATURE_KBD_LED_REPORT_ID1, 0xB9 };
 451	u8 buf_init2[] = { FEATURE_KBD_LED_REPORT_ID1, 0x41, 0x53, 0x55, 0x53, 0x20,
 452				0x54, 0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
 453	u8 buf_init3[] = { FEATURE_KBD_LED_REPORT_ID1,
 454						0x05, 0x20, 0x31, 0x00, 0x08 };
 455	int ret;
 456
 457	hid_info(hdev, "Asus initialise N-KEY Device");
 458	/* The first message is an init start */
 459	ret = asus_kbd_set_report(hdev, buf_init_start, sizeof(buf_init_start));
 460	if (ret < 0) {
 461		hid_warn(hdev, "Asus failed to send init start command: %d\n", ret);
 462		return ret;
 463	}
 464	/* Followed by a string */
 465	ret = asus_kbd_set_report(hdev, buf_init2, sizeof(buf_init2));
 466	if (ret < 0) {
 467		hid_warn(hdev, "Asus failed to send init command 1.0: %d\n", ret);
 468		return ret;
 469	}
 470	/* Followed by a string */
 471	ret = asus_kbd_set_report(hdev, buf_init3, sizeof(buf_init3));
 472	if (ret < 0) {
 473		hid_warn(hdev, "Asus failed to send init command 1.1: %d\n", ret);
 474		return ret;
 475	}
 476
 477	/* begin second report ID with same data */
 478	buf_init2[0] = FEATURE_KBD_LED_REPORT_ID2;
 479	buf_init3[0] = FEATURE_KBD_LED_REPORT_ID2;
 480
 481	ret = asus_kbd_set_report(hdev, buf_init2, sizeof(buf_init2));
 482	if (ret < 0) {
 483		hid_warn(hdev, "Asus failed to send init command 2.0: %d\n", ret);
 484		return ret;
 485	}
 486	ret = asus_kbd_set_report(hdev, buf_init3, sizeof(buf_init3));
 487	if (ret < 0)
 488		hid_warn(hdev, "Asus failed to send init command 2.1: %d\n", ret);
 489
 490	return ret;
 491}
 492
 493static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
 494				   enum led_brightness brightness)
 495{
 496	struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 497						 cdev);
 498	led->brightness = brightness;
 499	schedule_work(&led->work);
 500}
 501
 502static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
 503{
 504	struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
 505						 cdev);
 506
 507	return led->brightness;
 508}
 509
 510static void asus_kbd_backlight_work(struct work_struct *work)
 511{
 512	struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
 513	u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
 514	int ret;
 515
 516	if (led->removed)
 517		return;
 518
 519	buf[4] = led->brightness;
 520
 521	ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
 522	if (ret < 0)
 523		hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
 524}
 525
 526/* WMI-based keyboard backlight LED control (via asus-wmi driver) takes
 527 * precedence. We only activate HID-based backlight control when the
 528 * WMI control is not available.
 529 */
 530static bool asus_kbd_wmi_led_control_present(struct hid_device *hdev)
 531{
 532	u32 value;
 533	int ret;
 534
 535	if (!IS_ENABLED(CONFIG_ASUS_WMI))
 536		return false;
 537
 538	ret = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS,
 539				       ASUS_WMI_DEVID_KBD_BACKLIGHT, 0, &value);
 540	hid_dbg(hdev, "WMI backlight check: rc %d value %x", ret, value);
 541	if (ret)
 542		return false;
 543
 544	return !!(value & ASUS_WMI_DSTS_PRESENCE_BIT);
 545}
 546
 547static int asus_kbd_register_leds(struct hid_device *hdev)
 548{
 549	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 550	unsigned char kbd_func;
 551	int ret;
 552
 553	if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
 554		ret = rog_nkey_led_init(hdev);
 555		if (ret < 0)
 556			return ret;
 557	} else {
 558		/* Initialize keyboard */
 559		ret = asus_kbd_init(hdev);
 560		if (ret < 0)
 561			return ret;
 562
 563		/* Get keyboard functions */
 564		ret = asus_kbd_get_functions(hdev, &kbd_func);
 565		if (ret < 0)
 566			return ret;
 567
 568		/* Check for backlight support */
 569		if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
 570			return -ENODEV;
 571	}
 572
 573	drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
 574					      sizeof(struct asus_kbd_leds),
 575					      GFP_KERNEL);
 576	if (!drvdata->kbd_backlight)
 577		return -ENOMEM;
 578
 579	drvdata->kbd_backlight->removed = false;
 580	drvdata->kbd_backlight->brightness = 0;
 581	drvdata->kbd_backlight->hdev = hdev;
 582	drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
 583	drvdata->kbd_backlight->cdev.max_brightness = 3;
 584	drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
 585	drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
 586	INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
 587
 588	ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
 589	if (ret < 0) {
 590		/* No need to have this still around */
 591		devm_kfree(&hdev->dev, drvdata->kbd_backlight);
 592	}
 593
 594	return ret;
 595}
 596
 597/*
 598 * [0]       REPORT_ID (same value defined in report descriptor)
 599 * [1]	     rest battery level. range [0..255]
 600 * [2]..[7]  Bluetooth hardware address (MAC address)
 601 * [8]       charging status
 602 *            = 0 : AC offline / discharging
 603 *            = 1 : AC online  / charging
 604 *            = 2 : AC online  / fully charged
 605 */
 606static int asus_parse_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 607{
 608	u8 sts;
 609	u8 lvl;
 610	int val;
 611
 612	lvl = data[1];
 613	sts = data[8];
 614
 615	drvdata->battery_capacity = ((int)lvl * 100) / (int)BATTERY_LEVEL_MAX;
 616
 617	switch (sts) {
 618	case BATTERY_STAT_CHARGING:
 619		val = POWER_SUPPLY_STATUS_CHARGING;
 620		break;
 621	case BATTERY_STAT_FULL:
 622		val = POWER_SUPPLY_STATUS_FULL;
 623		break;
 624	case BATTERY_STAT_DISCONNECT:
 625	default:
 626		val = POWER_SUPPLY_STATUS_DISCHARGING;
 627		break;
 628	}
 629	drvdata->battery_stat = val;
 630
 631	return 0;
 632}
 633
 634static int asus_report_battery(struct asus_drvdata *drvdata, u8 *data, int size)
 635{
 636	/* notify only the autonomous event by device */
 637	if ((drvdata->battery_in_query == false) &&
 638			 (size == BATTERY_REPORT_SIZE))
 639		power_supply_changed(drvdata->battery);
 640
 641	return 0;
 642}
 643
 644static int asus_battery_query(struct asus_drvdata *drvdata)
 645{
 646	u8 *buf;
 647	int ret = 0;
 648
 649	buf = kmalloc(BATTERY_REPORT_SIZE, GFP_KERNEL);
 650	if (!buf)
 651		return -ENOMEM;
 652
 653	drvdata->battery_in_query = true;
 654	ret = hid_hw_raw_request(drvdata->hdev, BATTERY_REPORT_ID,
 655				buf, BATTERY_REPORT_SIZE,
 656				HID_INPUT_REPORT, HID_REQ_GET_REPORT);
 657	drvdata->battery_in_query = false;
 658	if (ret == BATTERY_REPORT_SIZE)
 659		ret = asus_parse_battery(drvdata, buf, BATTERY_REPORT_SIZE);
 660	else
 661		ret = -ENODATA;
 662
 663	kfree(buf);
 664
 665	return ret;
 666}
 667
 668static enum power_supply_property asus_battery_props[] = {
 669	POWER_SUPPLY_PROP_STATUS,
 670	POWER_SUPPLY_PROP_PRESENT,
 671	POWER_SUPPLY_PROP_CAPACITY,
 672	POWER_SUPPLY_PROP_SCOPE,
 673	POWER_SUPPLY_PROP_MODEL_NAME,
 674};
 675
 676#define	QUERY_MIN_INTERVAL	(60 * HZ)	/* 60[sec] */
 677
 678static int asus_battery_get_property(struct power_supply *psy,
 679				enum power_supply_property psp,
 680				union power_supply_propval *val)
 681{
 682	struct asus_drvdata *drvdata = power_supply_get_drvdata(psy);
 683	int ret = 0;
 684
 685	switch (psp) {
 686	case POWER_SUPPLY_PROP_STATUS:
 687	case POWER_SUPPLY_PROP_CAPACITY:
 688		if (time_before(drvdata->battery_next_query, jiffies)) {
 689			drvdata->battery_next_query =
 690					 jiffies + QUERY_MIN_INTERVAL;
 691			ret = asus_battery_query(drvdata);
 692			if (ret)
 693				return ret;
 694		}
 695		if (psp == POWER_SUPPLY_PROP_STATUS)
 696			val->intval = drvdata->battery_stat;
 697		else
 698			val->intval = drvdata->battery_capacity;
 699		break;
 700	case POWER_SUPPLY_PROP_PRESENT:
 701		val->intval = 1;
 702		break;
 703	case POWER_SUPPLY_PROP_SCOPE:
 704		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 705		break;
 706	case POWER_SUPPLY_PROP_MODEL_NAME:
 707		val->strval = drvdata->hdev->name;
 708		break;
 709	default:
 710		ret = -EINVAL;
 711		break;
 712	}
 713
 714	return ret;
 715}
 716
 717static int asus_battery_probe(struct hid_device *hdev)
 718{
 719	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 720	struct power_supply_config pscfg = { .drv_data = drvdata };
 721	int ret = 0;
 722
 723	drvdata->battery_capacity = 0;
 724	drvdata->battery_stat = POWER_SUPPLY_STATUS_UNKNOWN;
 725	drvdata->battery_in_query = false;
 726
 727	drvdata->battery_desc.properties = asus_battery_props;
 728	drvdata->battery_desc.num_properties = ARRAY_SIZE(asus_battery_props);
 729	drvdata->battery_desc.get_property = asus_battery_get_property;
 730	drvdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 731	drvdata->battery_desc.use_for_apm = 0;
 732	drvdata->battery_desc.name = devm_kasprintf(&hdev->dev, GFP_KERNEL,
 733					"asus-keyboard-%s-battery",
 734					strlen(hdev->uniq) ?
 735					hdev->uniq : dev_name(&hdev->dev));
 736	if (!drvdata->battery_desc.name)
 737		return -ENOMEM;
 738
 739	drvdata->battery_next_query = jiffies;
 740
 741	drvdata->battery = devm_power_supply_register(&hdev->dev,
 742				&(drvdata->battery_desc), &pscfg);
 743	if (IS_ERR(drvdata->battery)) {
 744		ret = PTR_ERR(drvdata->battery);
 745		drvdata->battery = NULL;
 746		hid_err(hdev, "Unable to register battery device\n");
 747		return ret;
 748	}
 749
 750	power_supply_powers(drvdata->battery, &hdev->dev);
 751
 752	return ret;
 753}
 754
 755static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 756{
 757	struct input_dev *input = hi->input;
 758	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 759
 760	/* T100CHI uses MULTI_INPUT, bind the touchpad to the mouse hid_input */
 761	if (drvdata->quirks & QUIRK_T100CHI &&
 762	    hi->report->id != T100CHI_MOUSE_REPORT_ID)
 763		return 0;
 764
 765	/* Handle MULTI_INPUT on E1239T mouse/touchpad USB interface */
 766	if (drvdata->tp && (drvdata->quirks & QUIRK_MEDION_E1239T)) {
 767		switch (hi->report->id) {
 768		case E1239T_TP_TOGGLE_REPORT_ID:
 769			input_set_capability(input, EV_KEY, KEY_F21);
 770			input->name = "Asus Touchpad Keys";
 771			drvdata->tp_kbd_input = input;
 772			return 0;
 773		case INPUT_REPORT_ID:
 774			break; /* Touchpad report, handled below */
 775		default:
 776			return 0; /* Ignore other reports */
 777		}
 778	}
 779
 780	if (drvdata->tp) {
 781		int ret;
 782
 783		input_set_abs_params(input, ABS_MT_POSITION_X, 0,
 784				     drvdata->tp->max_x, 0, 0);
 785		input_set_abs_params(input, ABS_MT_POSITION_Y, 0,
 786				     drvdata->tp->max_y, 0, 0);
 787		input_abs_set_res(input, ABS_MT_POSITION_X, drvdata->tp->res_x);
 788		input_abs_set_res(input, ABS_MT_POSITION_Y, drvdata->tp->res_y);
 789
 790		if (drvdata->tp->contact_size >= 5) {
 791			input_set_abs_params(input, ABS_TOOL_WIDTH, 0,
 792					     MAX_TOUCH_MAJOR, 0, 0);
 793			input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0,
 794					     MAX_TOUCH_MAJOR, 0, 0);
 795			input_set_abs_params(input, ABS_MT_PRESSURE, 0,
 796					      MAX_PRESSURE, 0, 0);
 797		}
 798
 799		__set_bit(BTN_LEFT, input->keybit);
 800		__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 801
 802		ret = input_mt_init_slots(input, drvdata->tp->max_contacts,
 803					  INPUT_MT_POINTER);
 804
 805		if (ret) {
 806			hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
 807			return ret;
 808		}
 809	}
 810
 811	drvdata->input = input;
 812
 813	if (drvdata->enable_backlight &&
 814	    !asus_kbd_wmi_led_control_present(hdev) &&
 815	    asus_kbd_register_leds(hdev))
 816		hid_warn(hdev, "Failed to initialize backlight.\n");
 817
 818	return 0;
 819}
 820
 821#define asus_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, \
 822						    max, EV_KEY, (c))
 823static int asus_input_mapping(struct hid_device *hdev,
 824		struct hid_input *hi, struct hid_field *field,
 825		struct hid_usage *usage, unsigned long **bit,
 826		int *max)
 827{
 828	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 829
 830	if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
 831		/* Don't map anything from the HID report.
 832		 * We do it all manually in asus_input_configured
 833		 */
 834		return -1;
 835	}
 836
 837	/*
 838	 * Ignore a bunch of bogus collections in the T100CHI descriptor.
 839	 * This avoids a bunch of non-functional hid_input devices getting
 840	 * created because of the T100CHI using HID_QUIRK_MULTI_INPUT.
 841	 */
 842	if ((drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) &&
 843	    (field->application == (HID_UP_GENDESK | 0x0080) ||
 844	     field->application == HID_GD_MOUSE ||
 845	     usage->hid == (HID_UP_GENDEVCTRLS | 0x0024) ||
 846	     usage->hid == (HID_UP_GENDEVCTRLS | 0x0025) ||
 847	     usage->hid == (HID_UP_GENDEVCTRLS | 0x0026)))
 848		return -1;
 849
 850	/* ASUS-specific keyboard hotkeys and led backlight */
 851	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_ASUSVENDOR) {
 852		switch (usage->hid & HID_USAGE) {
 853		case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);	break;
 854		case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);		break;
 855		case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);		break;
 856		case 0x6c: asus_map_key_clear(KEY_SLEEP);		break;
 857		case 0x7c: asus_map_key_clear(KEY_MICMUTE);		break;
 858		case 0x82: asus_map_key_clear(KEY_CAMERA);		break;
 859		case 0x88: asus_map_key_clear(KEY_RFKILL);			break;
 860		case 0xb5: asus_map_key_clear(KEY_CALC);			break;
 861		case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);		break;
 862		case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);		break;
 863
 864		/* ASUS touchpad toggle */
 865		case 0x6b: asus_map_key_clear(KEY_F21);			break;
 866
 867		/* ROG key */
 868		case 0x38: asus_map_key_clear(KEY_PROG1);		break;
 869
 870		/* Fn+C ASUS Splendid */
 871		case 0xba: asus_map_key_clear(KEY_PROG2);		break;
 872
 873		/* Fn+Space Power4Gear Hybrid */
 874		case 0x5c: asus_map_key_clear(KEY_PROG3);		break;
 875
 876		/* Fn+F5 "fan" symbol on FX503VD */
 877		case 0x99: asus_map_key_clear(KEY_PROG4);		break;
 878
 879		/* Fn+F5 "fan" symbol on N-Key keyboard */
 880		case 0xae: asus_map_key_clear(KEY_PROG4);		break;
 881
 882		/* Fn+Ret "Calc" symbol on N-Key keyboard */
 883		case 0x92: asus_map_key_clear(KEY_CALC);		break;
 884
 885		/* Fn+Left Aura mode previous on N-Key keyboard */
 886		case 0xb2: asus_map_key_clear(KEY_PROG2);		break;
 887
 888		/* Fn+Right Aura mode next on N-Key keyboard */
 889		case 0xb3: asus_map_key_clear(KEY_PROG3);		break;
 890
 891		default:
 892			/* ASUS lazily declares 256 usages, ignore the rest,
 893			 * as some make the keyboard appear as a pointer device. */
 894			return -1;
 895		}
 896
 897		/*
 898		 * Check and enable backlight only on devices with UsagePage ==
 899		 * 0xff31 to avoid initializing the keyboard firmware multiple
 900		 * times on devices with multiple HID descriptors but same
 901		 * PID/VID.
 902		 */
 903		if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
 904			drvdata->enable_backlight = true;
 905
 906		set_bit(EV_REP, hi->input->evbit);
 907		return 1;
 908	}
 909
 910	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
 911		switch (usage->hid & HID_USAGE) {
 912		case 0xff01: asus_map_key_clear(BTN_1);	break;
 913		case 0xff02: asus_map_key_clear(BTN_2);	break;
 914		case 0xff03: asus_map_key_clear(BTN_3);	break;
 915		case 0xff04: asus_map_key_clear(BTN_4);	break;
 916		case 0xff05: asus_map_key_clear(BTN_5);	break;
 917		case 0xff06: asus_map_key_clear(BTN_6);	break;
 918		case 0xff07: asus_map_key_clear(BTN_7);	break;
 919		case 0xff08: asus_map_key_clear(BTN_8);	break;
 920		case 0xff09: asus_map_key_clear(BTN_9);	break;
 921		case 0xff0a: asus_map_key_clear(BTN_A);	break;
 922		case 0xff0b: asus_map_key_clear(BTN_B);	break;
 923		case 0x00f1: asus_map_key_clear(KEY_WLAN);	break;
 924		case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN);	break;
 925		case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP);	break;
 926		case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF);	break;
 927		case 0x00f7: asus_map_key_clear(KEY_CAMERA);	break;
 928		case 0x00f8: asus_map_key_clear(KEY_PROG1);	break;
 929		default:
 930			return 0;
 931		}
 932
 933		set_bit(EV_REP, hi->input->evbit);
 934		return 1;
 935	}
 936
 937	if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
 938		(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
 939		switch (usage->hid & HID_USAGE) {
 940		case 0xe2: /* Mute */
 941		case 0xe9: /* Volume up */
 942		case 0xea: /* Volume down */
 943			return 0;
 944		default:
 945			/* Ignore dummy Consumer usages which make the
 946			 * keyboard incorrectly appear as a pointer device.
 947			 */
 948			return -1;
 949		}
 950	}
 951
 952	/*
 953	 * The mute button is broken and only sends press events, we
 954	 * deal with this in our raw_event handler, so do not map it.
 955	 */
 956	if ((drvdata->quirks & QUIRK_MEDION_E1239T) &&
 957	    usage->hid == (HID_UP_CONSUMER | 0xe2)) {
 958		input_set_capability(hi->input, EV_KEY, KEY_MUTE);
 959		return -1;
 960	}
 961
 962	return 0;
 963}
 964
 965static int asus_start_multitouch(struct hid_device *hdev)
 966{
 967	int ret;
 968	static const unsigned char buf[] = {
 969		FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00
 970	};
 971	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
 972
 973	if (!dmabuf) {
 974		ret = -ENOMEM;
 975		hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
 976		return ret;
 977	}
 978
 979	ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
 980					HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
 981
 982	kfree(dmabuf);
 983
 984	if (ret != sizeof(buf)) {
 985		hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
 986		return ret;
 987	}
 988
 989	return 0;
 990}
 991
 992static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
 993{
 994	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
 995
 996	if (drvdata->tp)
 997		return asus_start_multitouch(hdev);
 998
 999	return 0;
1000}
1001
1002static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
1003{
1004	int ret;
1005	struct asus_drvdata *drvdata;
1006
1007	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
1008	if (drvdata == NULL) {
1009		hid_err(hdev, "Can't alloc Asus descriptor\n");
1010		return -ENOMEM;
1011	}
1012
1013	hid_set_drvdata(hdev, drvdata);
1014
1015	drvdata->quirks = id->driver_data;
1016
1017	/*
1018	 * T90CHI's keyboard dock returns same ID values as T100CHI's dock.
1019	 * Thus, identify T90CHI dock with product name string.
1020	 */
1021	if (strstr(hdev->name, "T90CHI")) {
1022		drvdata->quirks &= ~QUIRK_T100CHI;
1023		drvdata->quirks |= QUIRK_T90CHI;
1024	}
1025
1026	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
1027		drvdata->tp = &asus_i2c_tp;
1028
1029	if ((drvdata->quirks & QUIRK_T100_KEYBOARD) && hid_is_usb(hdev)) {
1030		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1031
1032		if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
1033			drvdata->quirks = QUIRK_SKIP_INPUT_MAPPING;
1034			/*
1035			 * The T100HA uses the same USB-ids as the T100TAF and
1036			 * the T200TA uses the same USB-ids as the T100TA, while
1037			 * both have different max x/y values as the T100TA[F].
1038			 */
1039			if (dmi_match(DMI_PRODUCT_NAME, "T100HAN"))
1040				drvdata->tp = &asus_t100ha_tp;
1041			else if (dmi_match(DMI_PRODUCT_NAME, "T200TA"))
1042				drvdata->tp = &asus_t200ta_tp;
1043			else
1044				drvdata->tp = &asus_t100ta_tp;
1045		}
1046	}
1047
1048	if (drvdata->quirks & QUIRK_T100CHI) {
1049		/*
1050		 * All functionality is on a single HID interface and for
1051		 * userspace the touchpad must be a separate input_dev.
1052		 */
1053		hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1054		drvdata->tp = &asus_t100chi_tp;
1055	}
1056
1057	if ((drvdata->quirks & QUIRK_MEDION_E1239T) && hid_is_usb(hdev)) {
1058		struct usb_host_interface *alt =
1059			to_usb_interface(hdev->dev.parent)->altsetting;
1060
1061		if (alt->desc.bInterfaceNumber == MEDION_E1239T_TPAD_INTF) {
1062			/* For separate input-devs for tp and tp toggle key */
1063			hdev->quirks |= HID_QUIRK_MULTI_INPUT;
1064			drvdata->quirks |= QUIRK_SKIP_INPUT_MAPPING;
1065			drvdata->tp = &medion_e1239t_tp;
1066		}
1067	}
1068
1069	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
1070		hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1071
1072	drvdata->hdev = hdev;
1073
1074	if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1075		ret = asus_battery_probe(hdev);
1076		if (ret) {
1077			hid_err(hdev,
1078			    "Asus hid battery_probe failed: %d\n", ret);
1079			return ret;
1080		}
1081	}
1082
1083	ret = hid_parse(hdev);
1084	if (ret) {
1085		hid_err(hdev, "Asus hid parse failed: %d\n", ret);
1086		return ret;
1087	}
1088
1089	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1090	if (ret) {
1091		hid_err(hdev, "Asus hw start failed: %d\n", ret);
1092		return ret;
1093	}
1094
1095	if (!drvdata->input) {
1096		hid_err(hdev, "Asus input not registered\n");
1097		ret = -ENOMEM;
1098		goto err_stop_hw;
1099	}
1100
1101	if (drvdata->tp) {
1102		drvdata->input->name = "Asus TouchPad";
1103	} else {
1104		drvdata->input->name = "Asus Keyboard";
1105	}
1106
1107	if (drvdata->tp) {
1108		ret = asus_start_multitouch(hdev);
1109		if (ret)
1110			goto err_stop_hw;
1111	}
1112
1113	return 0;
1114err_stop_hw:
1115	hid_hw_stop(hdev);
1116	return ret;
1117}
1118
1119static void asus_remove(struct hid_device *hdev)
1120{
1121	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1122
1123	if (drvdata->kbd_backlight) {
1124		drvdata->kbd_backlight->removed = true;
1125		cancel_work_sync(&drvdata->kbd_backlight->work);
1126	}
1127
1128	hid_hw_stop(hdev);
1129}
1130
1131static const __u8 asus_g752_fixed_rdesc[] = {
1132        0x19, 0x00,			/*   Usage Minimum (0x00)       */
1133        0x2A, 0xFF, 0x00,		/*   Usage Maximum (0xFF)       */
1134};
1135
1136static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
1137		unsigned int *rsize)
1138{
1139	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
1140
1141	if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
1142			*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
1143		hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
1144		rdesc[55] = 0xdd;
1145	}
1146	/* For the T100TA/T200TA keyboard dock */
1147	if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
1148		 (*rsize == 76 || *rsize == 101) &&
1149		 rdesc[73] == 0x81 && rdesc[74] == 0x01) {
1150		hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
1151		rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
1152	}
1153	/* For the T100CHI/T90CHI keyboard dock */
1154	if (drvdata->quirks & (QUIRK_T100CHI | QUIRK_T90CHI)) {
1155		int rsize_orig;
1156		int offs;
1157
1158		if (drvdata->quirks & QUIRK_T100CHI) {
1159			rsize_orig = 403;
1160			offs = 388;
1161		} else {
1162			rsize_orig = 306;
1163			offs = 291;
1164		}
1165
1166		/*
1167		 * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
1168		 * (FFh) and clear the flags in the Input() byte.
1169		 * Note the descriptor has a bogus 0 byte at the end so we
1170		 * only need 1 extra byte.
1171		 */
1172		if (*rsize == rsize_orig &&
1173			rdesc[offs] == 0x09 && rdesc[offs + 1] == 0x76) {
1174			*rsize = rsize_orig + 1;
1175			rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
1176			if (!rdesc)
1177				return NULL;
1178
1179			hid_info(hdev, "Fixing up %s keyb report descriptor\n",
1180				drvdata->quirks & QUIRK_T100CHI ?
1181				"T100CHI" : "T90CHI");
1182			memmove(rdesc + offs + 4, rdesc + offs + 2, 12);
1183			rdesc[offs] = 0x19;
1184			rdesc[offs + 1] = 0x00;
1185			rdesc[offs + 2] = 0x29;
1186			rdesc[offs + 3] = 0xff;
1187			rdesc[offs + 14] = 0x00;
1188		}
1189	}
1190
1191	if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
1192		 *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
1193		/* report is missing usage mninum and maximum */
1194		__u8 *new_rdesc;
1195		size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
1196
1197		new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
1198		if (new_rdesc == NULL)
1199			return rdesc;
1200
1201		hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
1202		/* copy the valid part */
1203		memcpy(new_rdesc, rdesc, 61);
1204		/* insert missing part */
1205		memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
1206		/* copy remaining data */
1207		memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
1208
1209		*rsize = new_size;
1210		rdesc = new_rdesc;
1211	}
1212
1213	if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD &&
1214			*rsize == 331 && rdesc[190] == 0x85 && rdesc[191] == 0x5a &&
1215			rdesc[204] == 0x95 && rdesc[205] == 0x05) {
1216		hid_info(hdev, "Fixing up Asus N-KEY keyb report descriptor\n");
1217		rdesc[205] = 0x01;
1218	}
1219
1220	return rdesc;
1221}
1222
1223static const struct hid_device_id asus_devices[] = {
1224	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1225		USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
1226	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
1227		USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1228	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1229		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1), QUIRK_USE_KBD_BACKLIGHT },
1230	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1231		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
1232	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1233		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
1234	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1235		USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
1236	  QUIRK_USE_KBD_BACKLIGHT },
1237	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1238	    USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD),
1239	  QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1240	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1241	    USB_DEVICE_ID_ASUSTEK_ROG_NKEY_KEYBOARD2),
1242	  QUIRK_USE_KBD_BACKLIGHT | QUIRK_ROG_NKEY_KEYBOARD },
1243	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1244	    USB_DEVICE_ID_ASUSTEK_ROG_CLAYMORE_II_KEYBOARD),
1245	  QUIRK_ROG_CLAYMORE_II_KEYBOARD },
1246	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1247		USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
1248	  QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1249	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
1250		USB_DEVICE_ID_ASUSTEK_T100TAF_KEYBOARD),
1251	  QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
1252	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
1253	{ HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
1254	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
1255	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
1256		USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
1257	{ HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE_MEDION_E1239T),
1258		QUIRK_MEDION_E1239T },
1259	/*
1260	 * Note bind to the HID_GROUP_GENERIC group, so that we only bind to the keyboard
1261	 * part, while letting hid-multitouch.c handle the touchpad.
1262	 */
1263	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1264		USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T101HA_KEYBOARD) },
1265	{ }
1266};
1267MODULE_DEVICE_TABLE(hid, asus_devices);
1268
1269static struct hid_driver asus_driver = {
1270	.name			= "asus",
1271	.id_table		= asus_devices,
1272	.report_fixup		= asus_report_fixup,
1273	.probe                  = asus_probe,
1274	.remove			= asus_remove,
1275	.input_mapping          = asus_input_mapping,
1276	.input_configured       = asus_input_configured,
1277#ifdef CONFIG_PM
1278	.reset_resume           = asus_reset_resume,
1279#endif
1280	.event			= asus_event,
1281	.raw_event		= asus_raw_event
1282};
1283module_hid_driver(asus_driver);
1284
1285MODULE_LICENSE("GPL");