[linux-2.6-block.git] / drivers / hid / hid-asus.c

/*
 *  HID driver for Asus notebook built-in keyboard.
 *  Fixes small logical maximum to match usage maximum.
 *
 *  Currently supported devices are:
 *    EeeBook X205TA
 *    VivoBook E200HA
 *
 *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
 *
 *  This module based on hid-ortek by
 *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
 *  Copyright (c) 2011 Jiri Kosina
 *
 *  This module has been updated to add support for Asus i2c touchpad.
 *
 *  Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
 *  Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
 *  Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

#include <linux/hid.h>
#include <linux/module.h>
#include <linux/input/mt.h>

#include "hid-ids.h"

MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");

#define FEATURE_REPORT_ID 0x0d
#define INPUT_REPORT_ID 0x5d

#define INPUT_REPORT_SIZE 28

#define MAX_CONTACTS 5

#define MAX_X 2794
#define MAX_Y 1758
#define MAX_TOUCH_MAJOR 8
#define MAX_PRESSURE 128

#define CONTACT_DATA_SIZE 5

#define BTN_LEFT_MASK 0x01
#define CONTACT_TOOL_TYPE_MASK 0x80
#define CONTACT_X_MSB_MASK 0xf0
#define CONTACT_Y_MSB_MASK 0x0f
#define CONTACT_TOUCH_MAJOR_MASK 0x07
#define CONTACT_PRESSURE_MASK 0x7f

#define QUIRK_FIX_NOTEBOOK_REPORT	BIT(0)
#define QUIRK_NO_INIT_REPORTS		BIT(1)
#define QUIRK_SKIP_INPUT_MAPPING	BIT(2)
#define QUIRK_IS_MULTITOUCH		BIT(3)
#define QUIRK_NO_CONSUMER_USAGES	BIT(4)

#define I2C_KEYBOARD_QUIRKS			(QUIRK_FIX_NOTEBOOK_REPORT | \
						 QUIRK_NO_INIT_REPORTS | \
						 QUIRK_NO_CONSUMER_USAGES)
#define I2C_TOUCHPAD_QUIRKS			(QUIRK_NO_INIT_REPORTS | \
						 QUIRK_SKIP_INPUT_MAPPING | \
						 QUIRK_IS_MULTITOUCH)

#define TRKID_SGN       ((TRKID_MAX + 1) >> 1)

struct asus_drvdata {
	unsigned long quirks;
	struct input_dev *input;
};

static void asus_report_contact_down(struct input_dev *input,
		int toolType, u8 *data)
{
	int touch_major, pressure;
	int x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
	int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);

	if (toolType == MT_TOOL_PALM) {
		touch_major = MAX_TOUCH_MAJOR;
		pressure = MAX_PRESSURE;
	} else {
		touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
		pressure = data[4] & CONTACT_PRESSURE_MASK;
	}

	input_report_abs(input, ABS_MT_POSITION_X, x);
	input_report_abs(input, ABS_MT_POSITION_Y, y);
	input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
	input_report_abs(input, ABS_MT_PRESSURE, pressure);
}

/* Required for Synaptics Palm Detection */
static void asus_report_tool_width(struct input_dev *input)
{
	struct input_mt *mt = input->mt;
	struct input_mt_slot *oldest;
	int oldid, count, i;

	oldest = NULL;
	oldid = mt->trkid;
	count = 0;

	for (i = 0; i < mt->num_slots; ++i) {
		struct input_mt_slot *ps = &mt->slots[i];
		int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);

		if (id < 0)
			continue;
		if ((id - oldid) & TRKID_SGN) {
			oldest = ps;
			oldid = id;
		}
		count++;
	}

	if (oldest) {
		input_report_abs(input, ABS_TOOL_WIDTH,
			input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
	}
}

static void asus_report_input(struct input_dev *input, u8 *data)
{
	int i;
	u8 *contactData = data + 2;

	for (i = 0; i < MAX_CONTACTS; i++) {
		bool down = !!(data[1] & BIT(i+3));
		int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
						MT_TOOL_PALM : MT_TOOL_FINGER;

		input_mt_slot(input, i);
		input_mt_report_slot_state(input, toolType, down);

		if (down) {
			asus_report_contact_down(input, toolType, contactData);
			contactData += CONTACT_DATA_SIZE;
		}
	}

	input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
	asus_report_tool_width(input);

	input_mt_sync_frame(input);
	input_sync(input);
}

static int asus_raw_event(struct hid_device *hdev,
		struct hid_report *report, u8 *data, int size)
{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
					 data[0] == INPUT_REPORT_ID &&
						size == INPUT_REPORT_SIZE) {
		asus_report_input(drvdata->input, data);
		return 1;
	}

	return 0;
}

static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
{
	struct input_dev *input = hi->input;
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
		int ret;

		input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
		input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
		input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
		input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
		input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);

		__set_bit(BTN_LEFT, input->keybit);
		__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);

		ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);

		if (ret) {
			hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
			return ret;
		}
	}

	drvdata->input = input;

	return 0;
}

#define asus_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, \
						    max, EV_KEY, (c))
static int asus_input_mapping(struct hid_device *hdev,
		struct hid_input *hi, struct hid_field *field,
		struct hid_usage *usage, unsigned long **bit,
		int *max)
{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
		/* Don't map anything from the HID report.
		 * We do it all manually in asus_input_configured
		 */
		return -1;
	}

	/* ASUS-specific keyboard hotkeys */
	if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
		set_bit(EV_REP, hi->input->evbit);
		switch (usage->hid & HID_USAGE) {
		case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN);	break;
		case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);		break;
		case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);		break;
		case 0x6c: asus_map_key_clear(KEY_SLEEP);		break;
		case 0x82: asus_map_key_clear(KEY_CAMERA);		break;
		case 0x88: asus_map_key_clear(KEY_RFKILL);			break;
		case 0xb5: asus_map_key_clear(KEY_CALC);			break;
		case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP);		break;
		case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN);		break;

		/* ASUS touchpad toggle */
		case 0x6b: asus_map_key_clear(KEY_F21);			break;

		/* ROG key */
		case 0x38: asus_map_key_clear(KEY_PROG1);		break;

		/* Fn+C ASUS Splendid */
		case 0xba: asus_map_key_clear(KEY_PROG2);		break;

		/* Fn+Space Power4Gear Hybrid */
		case 0x5c: asus_map_key_clear(KEY_PROG3);		break;

		default:
			/* ASUS lazily declares 256 usages, ignore the rest,
			 * as some make the keyboard appear as a pointer device. */
			return -1;
		}
		return 1;
	}

	if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
		(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
		switch (usage->hid & HID_USAGE) {
		case 0xe2: /* Mute */
		case 0xe9: /* Volume up */
		case 0xea: /* Volume down */
			return 0;
		default:
			/* Ignore dummy Consumer usages which make the
			 * keyboard incorrectly appear as a pointer device.
			 */
			return -1;
		}
	}

	return 0;
}

static int asus_start_multitouch(struct hid_device *hdev)
{
	int ret;
	const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);

	if (!dmabuf) {
		ret = -ENOMEM;
		hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
		return ret;
	}

	ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
					HID_FEATURE_REPORT, HID_REQ_SET_REPORT);

	kfree(dmabuf);

	if (ret != sizeof(buf)) {
		hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
		return ret;
	}

	return 0;
}

static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
		return asus_start_multitouch(hdev);

	return 0;
}

static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int ret;
	struct asus_drvdata *drvdata;

	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
	if (drvdata == NULL) {
		hid_err(hdev, "Can't alloc Asus descriptor\n");
		return -ENOMEM;
	}

	hid_set_drvdata(hdev, drvdata);

	drvdata->quirks = id->driver_data;

	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
		hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;

	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "Asus hid parse failed: %d\n", ret);
		return ret;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		hid_err(hdev, "Asus hw start failed: %d\n", ret);
		return ret;
	}

	if (!drvdata->input) {
		hid_err(hdev, "Asus input not registered\n");
		ret = -ENOMEM;
		goto err_stop_hw;
	}

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
		drvdata->input->name = "Asus TouchPad";
	} else {
		drvdata->input->name = "Asus Keyboard";
	}

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
		ret = asus_start_multitouch(hdev);
		if (ret)
			goto err_stop_hw;
	}

	return 0;
err_stop_hw:
	hid_hw_stop(hdev);
	return ret;
}

static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
		unsigned int *rsize)
{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
			*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
		hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
		rdesc[55] = 0xdd;
	}
	return rdesc;
}

static const struct hid_device_id asus_devices[] = {
	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
		USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
		USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2) },
	{ }
};
MODULE_DEVICE_TABLE(hid, asus_devices);

static struct hid_driver asus_driver = {
	.name			= "asus",
	.id_table		= asus_devices,
	.report_fixup		= asus_report_fixup,
	.probe                  = asus_probe,
	.input_mapping          = asus_input_mapping,
	.input_configured       = asus_input_configured,
#ifdef CONFIG_PM
	.reset_resume           = asus_reset_resume,
#endif
	.raw_event		= asus_raw_event
};
module_hid_driver(asus_driver);

MODULE_LICENSE("GPL");
Commit	Line	Data
eeb01a57	1	/*
b94f7d5d	2	* HID driver for Asus notebook built-in keyboard.
eeb01a57 YF	3	* Fixes small logical maximum to match usage maximum.
eeb01a57 YF	4	*
b94f7d5d YF	5	* Currently supported devices are:
	6	* EeeBook X205TA
	7	* VivoBook E200HA
	8	*
eeb01a57 YF	9	* Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
	10	*
	11	* This module based on hid-ortek by
	12	* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
	13	* Copyright (c) 2011 Jiri Kosina
9ce12d8b BM	14	*
	15	* This module has been updated to add support for Asus i2c touchpad.
	16	*
	17	* Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
	18	* Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
	19	* Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
eeb01a57 YF	20	*/
	21
	22	/*
	23	* This program is free software; you can redistribute it and/or modify it
	24	* under the terms of the GNU General Public License as published by the Free
	25	* Software Foundation; either version 2 of the License, or (at your option)
	26	* any later version.
	27	*/
	28
eeb01a57 YF	29	#include <linux/hid.h>
eeb01a57 YF	30	#include <linux/module.h>
9ce12d8b	31	#include <linux/input/mt.h>
eeb01a57 YF	32
	33	#include "hid-ids.h"
	34
9ce12d8b BM	35	MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
	36	MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
	37	MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
	38	MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
	39	MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
	40
	41	#define FEATURE_REPORT_ID 0x0d
	42	#define INPUT_REPORT_ID 0x5d
	43
	44	#define INPUT_REPORT_SIZE 28
	45
	46	#define MAX_CONTACTS 5
	47
	48	#define MAX_X 2794
	49	#define MAX_Y 1758
	50	#define MAX_TOUCH_MAJOR 8
	51	#define MAX_PRESSURE 128
	52
	53	#define CONTACT_DATA_SIZE 5
	54
	55	#define BTN_LEFT_MASK 0x01
	56	#define CONTACT_TOOL_TYPE_MASK 0x80
	57	#define CONTACT_X_MSB_MASK 0xf0
	58	#define CONTACT_Y_MSB_MASK 0x0f
	59	#define CONTACT_TOUCH_MAJOR_MASK 0x07
	60	#define CONTACT_PRESSURE_MASK 0x7f
	61
	62	#define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
	63	#define QUIRK_NO_INIT_REPORTS BIT(1)
	64	#define QUIRK_SKIP_INPUT_MAPPING BIT(2)
	65	#define QUIRK_IS_MULTITOUCH BIT(3)
0485b1ec	66	#define QUIRK_NO_CONSUMER_USAGES BIT(4)
9ce12d8b	67
a93913e1	68	#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT \| \
0485b1ec MH	69	QUIRK_NO_INIT_REPORTS \| \
0485b1ec MH	70	QUIRK_NO_CONSUMER_USAGES)
a93913e1	71	#define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS \| \
9ce12d8b BM	72	QUIRK_SKIP_INPUT_MAPPING \| \
	73	QUIRK_IS_MULTITOUCH)
	74
	75	#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
	76
	77	struct asus_drvdata {
	78	unsigned long quirks;
	79	struct input_dev *input;
	80	};
	81
	82	static void asus_report_contact_down(struct input_dev *input,
	83	int toolType, u8 *data)
	84	{
	85	int touch_major, pressure;
	86	int x = (data[0] & CONTACT_X_MSB_MASK) << 4 \| data[1];
	87	int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 \| data[2]);
	88
	89	if (toolType == MT_TOOL_PALM) {
	90	touch_major = MAX_TOUCH_MAJOR;
	91	pressure = MAX_PRESSURE;
	92	} else {
	93	touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
	94	pressure = data[4] & CONTACT_PRESSURE_MASK;
	95	}
	96
	97	input_report_abs(input, ABS_MT_POSITION_X, x);
	98	input_report_abs(input, ABS_MT_POSITION_Y, y);
	99	input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
	100	input_report_abs(input, ABS_MT_PRESSURE, pressure);
	101	}
	102
	103	/* Required for Synaptics Palm Detection */
	104	static void asus_report_tool_width(struct input_dev *input)
	105	{
	106	struct input_mt *mt = input->mt;
	107	struct input_mt_slot *oldest;
	108	int oldid, count, i;
	109
	110	oldest = NULL;
	111	oldid = mt->trkid;
	112	count = 0;
	113
	114	for (i = 0; i < mt->num_slots; ++i) {
	115	struct input_mt_slot *ps = &mt->slots[i];
	116	int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
	117
	118	if (id < 0)
	119	continue;
	120	if ((id - oldid) & TRKID_SGN) {
	121	oldest = ps;
	122	oldid = id;
	123	}
	124	count++;
	125	}
	126
	127	if (oldest) {
	128	input_report_abs(input, ABS_TOOL_WIDTH,
	129	input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
	130	}
	131	}
	132
	133	static void asus_report_input(struct input_dev input, u8 data)
	134	{
	135	int i;
136	u8 *contactData = data + 2;
137
138	for (i = 0; i < MAX_CONTACTS; i++) {
139	bool down = !!(data[1] & BIT(i+3));
140	int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
141	MT_TOOL_PALM : MT_TOOL_FINGER;
142
143	input_mt_slot(input, i);
144	input_mt_report_slot_state(input, toolType, down);
145
146	if (down) {
147	asus_report_contact_down(input, toolType, contactData);
148	contactData += CONTACT_DATA_SIZE;
149	}
150	}
151
152	input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
153	asus_report_tool_width(input);
154
155	input_mt_sync_frame(input);
156	input_sync(input);
157	}
158
159	static int asus_raw_event(struct hid_device *hdev,
160	struct hid_report report, u8 data, int size)
161	{
162	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
163
164	if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
165	data[0] == INPUT_REPORT_ID &&
166	size == INPUT_REPORT_SIZE) {
167	asus_report_input(drvdata->input, data);
168	return 1;
169	}
170
171	return 0;
172	}
173
174	static int asus_input_configured(struct hid_device hdev, struct hid_input hi)
175	{
c8b1b3dd	176	struct input_dev *input = hi->input;
9ce12d8b BM	177	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	178
	179	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	180	int ret;
9ce12d8b BM	181
	182	input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
	183	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
	184	input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
	185	input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
	186	input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);
	187
	188	__set_bit(BTN_LEFT, input->keybit);
	189	__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
	190
	191	ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);
	192
	193	if (ret) {
	194	hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
	195	return ret;
	196	}
9ce12d8b BM	197	}
9ce12d8b BM	198
c8b1b3dd BM	199	drvdata->input = input;
c8b1b3dd BM	200
9ce12d8b BM	201	return 0;
	202	}
	203
a93913e1	204	#define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
1caccc25	205	max, EV_KEY, (c))
9ce12d8b BM	206	static int asus_input_mapping(struct hid_device *hdev,
	207	struct hid_input hi, struct hid_field field,
	208	struct hid_usage usage, unsigned long *bit,
	209	int *max)
	210	{
	211	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	212
	213	if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
	214	/* Don't map anything from the HID report.
	215	* We do it all manually in asus_input_configured
	216	*/
	217	return -1;
	218	}
	219
a93913e1	220	/* ASUS-specific keyboard hotkeys */
1caccc25 CC	221	if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
	222	set_bit(EV_REP, hi->input->evbit);
	223	switch (usage->hid & HID_USAGE) {
a93913e1 MH	224	case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
	225	case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
	226	case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
	227	case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
	228	case 0x82: asus_map_key_clear(KEY_CAMERA); break;
802b24b4	229	case 0x88: asus_map_key_clear(KEY_RFKILL); break;
a93913e1 MH	230	case 0xb5: asus_map_key_clear(KEY_CALC); break;
	231	case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
	232	case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
1caccc25 CC	233
1caccc25 CC	234	/* ASUS touchpad toggle */
a93913e1	235	case 0x6b: asus_map_key_clear(KEY_F21); break;
1caccc25 CC	236
1caccc25 CC	237	/* ROG key */
a93913e1	238	case 0x38: asus_map_key_clear(KEY_PROG1); break;
1caccc25 CC	239
1caccc25 CC	240	/* Fn+C ASUS Splendid */
a93913e1	241	case 0xba: asus_map_key_clear(KEY_PROG2); break;
1caccc25 CC	242
1caccc25 CC	243	/* Fn+Space Power4Gear Hybrid */
a93913e1	244	case 0x5c: asus_map_key_clear(KEY_PROG3); break;
1caccc25 CC	245
1caccc25 CC	246	default:
0485b1ec MH	247	/* ASUS lazily declares 256 usages, ignore the rest,
	248	* as some make the keyboard appear as a pointer device. */
	249	return -1;
1caccc25 CC	250	}
	251	return 1;
	252	}
	253
0485b1ec MH	254	if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
	255	(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
	256	switch (usage->hid & HID_USAGE) {
	257	case 0xe2: /* Mute */
	258	case 0xe9: /* Volume up */
	259	case 0xea: /* Volume down */
	260	return 0;
	261	default:
	262	/* Ignore dummy Consumer usages which make the
	263	* keyboard incorrectly appear as a pointer device.
	264	*/
	265	return -1;
	266	}
	267	}
	268
9ce12d8b BM	269	return 0;
	270	}
	271
	272	static int asus_start_multitouch(struct hid_device *hdev)
	273	{
	274	int ret;
	275	const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
	276	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
	277
	278	if (!dmabuf) {
	279	ret = -ENOMEM;
	280	hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
	281	return ret;
	282	}
	283
	284	ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
	285	HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
	286
	287	kfree(dmabuf);
	288
	289	if (ret != sizeof(buf)) {
	290	hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
	291	return ret;
	292	}
	293
	294	return 0;
	295	}
	296
	297	static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
	298	{
	299	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	300
	301	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
	302	return asus_start_multitouch(hdev);
	303
	304	return 0;
	305	}
	306
	307	static int asus_probe(struct hid_device hdev, const struct hid_device_id id)
	308	{
	309	int ret;
	310	struct asus_drvdata *drvdata;
	311
	312	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
	313	if (drvdata == NULL) {
	314	hid_err(hdev, "Can't alloc Asus descriptor\n");
	315	return -ENOMEM;
	316	}
	317
	318	hid_set_drvdata(hdev, drvdata);
	319
	320	drvdata->quirks = id->driver_data;
	321
	322	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
	323	hdev->quirks \|= HID_QUIRK_NO_INIT_REPORTS;
	324
	325	ret = hid_parse(hdev);
	326	if (ret) {
	327	hid_err(hdev, "Asus hid parse failed: %d\n", ret);
	328	return ret;
	329	}
	330
	331	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	332	if (ret) {
333	hid_err(hdev, "Asus hw start failed: %d\n", ret);
334	return ret;
335	}
336
337	if (!drvdata->input) {
338	hid_err(hdev, "Asus input not registered\n");
339	ret = -ENOMEM;
340	goto err_stop_hw;
341	}
342
c8b1b3dd BM	343	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	344	drvdata->input->name = "Asus TouchPad";
	345	} else {
	346	drvdata->input->name = "Asus Keyboard";
	347	}
9ce12d8b BM	348
	349	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	350	ret = asus_start_multitouch(hdev);
	351	if (ret)
	352	goto err_stop_hw;
	353	}
	354
	355	return 0;
	356	err_stop_hw:
	357	hid_hw_stop(hdev);
	358	return ret;
	359	}
	360
eeb01a57 YF	361	static __u8 asus_report_fixup(struct hid_device hdev, __u8 *rdesc,
	362	unsigned int *rsize)
	363	{
9ce12d8b BM	364	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	365
	366	if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
	367	*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
b94f7d5d	368	hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
eeb01a57 YF	369	rdesc[55] = 0xdd;
	370	}
	371	return rdesc;
	372	}
	373
	374	static const struct hid_device_id asus_devices[] = {
9ce12d8b	375	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
a93913e1	376	USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
9ce12d8b	377	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
a93913e1	378	USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
1caccc25 CC	379	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
	380	USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
	381	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
	382	USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2) },
eeb01a57 YF	383	{ }
	384	};
	385	MODULE_DEVICE_TABLE(hid, asus_devices);
	386
	387	static struct hid_driver asus_driver = {
9ce12d8b BM	388	.name = "asus",
	389	.id_table = asus_devices,
	390	.report_fixup = asus_report_fixup,
	391	.probe = asus_probe,
	392	.input_mapping = asus_input_mapping,
	393	.input_configured = asus_input_configured,
	394	#ifdef CONFIG_PM
	395	.reset_resume = asus_reset_resume,
	396	#endif
	397	.raw_event = asus_raw_event
eeb01a57 YF	398	};
	399	module_hid_driver(asus_driver);
	400
	401	MODULE_LICENSE("GPL");