[mirror_ubuntu-zesty-kernel.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 KEYBOARD_QUIRKS			(QUIRK_FIX_NOTEBOOK_REPORT | \
						 QUIRK_NO_INIT_REPORTS)
#define 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;
}

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;
	}

	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_NOTEBOOK_KEYBOARD), KEYBOARD_QUIRKS},
	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
			 USB_DEVICE_ID_ASUSTEK_TOUCHPAD), TOUCHPAD_QUIRKS },
	{ }
};
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)
	66
c8b1b3dd BM	67	#define KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT \| \
c8b1b3dd BM	68	QUIRK_NO_INIT_REPORTS)
9ce12d8b BM	69	#define TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS \| \
	70	QUIRK_SKIP_INPUT_MAPPING \| \
	71	QUIRK_IS_MULTITOUCH)
	72
	73	#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
	74
	75	struct asus_drvdata {
	76	unsigned long quirks;
	77	struct input_dev *input;
	78	};
	79
	80	static void asus_report_contact_down(struct input_dev *input,
	81	int toolType, u8 *data)
	82	{
	83	int touch_major, pressure;
	84	int x = (data[0] & CONTACT_X_MSB_MASK) << 4 \| data[1];
	85	int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 \| data[2]);
	86
	87	if (toolType == MT_TOOL_PALM) {
	88	touch_major = MAX_TOUCH_MAJOR;
	89	pressure = MAX_PRESSURE;
	90	} else {
	91	touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
	92	pressure = data[4] & CONTACT_PRESSURE_MASK;
	93	}
	94
	95	input_report_abs(input, ABS_MT_POSITION_X, x);
	96	input_report_abs(input, ABS_MT_POSITION_Y, y);
	97	input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
	98	input_report_abs(input, ABS_MT_PRESSURE, pressure);
	99	}
	100
	101	/* Required for Synaptics Palm Detection */
	102	static void asus_report_tool_width(struct input_dev *input)
	103	{
	104	struct input_mt *mt = input->mt;
	105	struct input_mt_slot *oldest;
	106	int oldid, count, i;
	107
	108	oldest = NULL;
	109	oldid = mt->trkid;
	110	count = 0;
	111
	112	for (i = 0; i < mt->num_slots; ++i) {
	113	struct input_mt_slot *ps = &mt->slots[i];
	114	int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
	115
	116	if (id < 0)
	117	continue;
	118	if ((id - oldid) & TRKID_SGN) {
	119	oldest = ps;
	120	oldid = id;
	121	}
	122	count++;
	123	}
	124
	125	if (oldest) {
	126	input_report_abs(input, ABS_TOOL_WIDTH,
	127	input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
	128	}
	129	}
	130
	131	static void asus_report_input(struct input_dev input, u8 data)
	132	{
133	int i;
134	u8 *contactData = data + 2;
135
136	for (i = 0; i < MAX_CONTACTS; i++) {
137	bool down = !!(data[1] & BIT(i+3));
138	int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
139	MT_TOOL_PALM : MT_TOOL_FINGER;
140
141	input_mt_slot(input, i);
142	input_mt_report_slot_state(input, toolType, down);
143
144	if (down) {
145	asus_report_contact_down(input, toolType, contactData);
146	contactData += CONTACT_DATA_SIZE;
147	}
148	}
149
150	input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
151	asus_report_tool_width(input);
152
153	input_mt_sync_frame(input);
154	input_sync(input);
155	}
156
157	static int asus_raw_event(struct hid_device *hdev,
158	struct hid_report report, u8 data, int size)
159	{
160	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
161
162	if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
163	data[0] == INPUT_REPORT_ID &&
164	size == INPUT_REPORT_SIZE) {
165	asus_report_input(drvdata->input, data);
166	return 1;
167	}
168
169	return 0;
170	}
171
172	static int asus_input_configured(struct hid_device hdev, struct hid_input hi)
173	{
c8b1b3dd	174	struct input_dev *input = hi->input;
9ce12d8b BM	175	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	176
	177	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	178	int ret;
9ce12d8b BM	179
	180	input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
	181	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
	182	input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
	183	input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
	184	input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);
	185
	186	__set_bit(BTN_LEFT, input->keybit);
	187	__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
	188
	189	ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);
	190
	191	if (ret) {
	192	hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
	193	return ret;
	194	}
9ce12d8b BM	195	}
9ce12d8b BM	196
c8b1b3dd BM	197	drvdata->input = input;
c8b1b3dd BM	198
9ce12d8b BM	199	return 0;
	200	}
	201
	202	static int asus_input_mapping(struct hid_device *hdev,
	203	struct hid_input hi, struct hid_field field,
	204	struct hid_usage usage, unsigned long *bit,
	205	int *max)
	206	{
	207	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	208
	209	if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
	210	/* Don't map anything from the HID report.
	211	* We do it all manually in asus_input_configured
	212	*/
	213	return -1;
	214	}
	215
	216	return 0;
	217	}
	218
	219	static int asus_start_multitouch(struct hid_device *hdev)
	220	{
	221	int ret;
	222	const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
	223	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
	224
	225	if (!dmabuf) {
	226	ret = -ENOMEM;
	227	hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
	228	return ret;
	229	}
	230
	231	ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
	232	HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
	233
	234	kfree(dmabuf);
	235
	236	if (ret != sizeof(buf)) {
	237	hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
	238	return ret;
	239	}
	240
	241	return 0;
	242	}
	243
	244	static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
	245	{
	246	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	247
	248	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
	249	return asus_start_multitouch(hdev);
	250
	251	return 0;
	252	}
	253
	254	static int asus_probe(struct hid_device hdev, const struct hid_device_id id)
	255	{
	256	int ret;
	257	struct asus_drvdata *drvdata;
	258
	259	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
	260	if (drvdata == NULL) {
	261	hid_err(hdev, "Can't alloc Asus descriptor\n");
	262	return -ENOMEM;
263	}
264
265	hid_set_drvdata(hdev, drvdata);
266
267	drvdata->quirks = id->driver_data;
268
269	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
270	hdev->quirks \|= HID_QUIRK_NO_INIT_REPORTS;
271
272	ret = hid_parse(hdev);
273	if (ret) {
274	hid_err(hdev, "Asus hid parse failed: %d\n", ret);
275	return ret;
276	}
277
278	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
279	if (ret) {
280	hid_err(hdev, "Asus hw start failed: %d\n", ret);
281	return ret;
282	}
283
284	if (!drvdata->input) {
285	hid_err(hdev, "Asus input not registered\n");
286	ret = -ENOMEM;
287	goto err_stop_hw;
288	}
289
c8b1b3dd BM	290	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	291	drvdata->input->name = "Asus TouchPad";
	292	} else {
	293	drvdata->input->name = "Asus Keyboard";
	294	}
9ce12d8b BM	295
	296	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	297	ret = asus_start_multitouch(hdev);
	298	if (ret)
	299	goto err_stop_hw;
	300	}
	301
	302	return 0;
	303	err_stop_hw:
	304	hid_hw_stop(hdev);
	305	return ret;
	306	}
	307
eeb01a57 YF	308	static __u8 asus_report_fixup(struct hid_device hdev, __u8 *rdesc,
	309	unsigned int *rsize)
	310	{
9ce12d8b BM	311	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
	312
	313	if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
	314	*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
b94f7d5d	315	hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
eeb01a57 YF	316	rdesc[55] = 0xdd;
	317	}
	318	return rdesc;
	319	}
	320
	321	static const struct hid_device_id asus_devices[] = {
9ce12d8b	322	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
c8b1b3dd	323	USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD), KEYBOARD_QUIRKS},
9ce12d8b BM	324	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
9ce12d8b BM	325	USB_DEVICE_ID_ASUSTEK_TOUCHPAD), TOUCHPAD_QUIRKS },
eeb01a57 YF	326	{ }
	327	};
	328	MODULE_DEVICE_TABLE(hid, asus_devices);
	329
	330	static struct hid_driver asus_driver = {
9ce12d8b BM	331	.name = "asus",
	332	.id_table = asus_devices,
	333	.report_fixup = asus_report_fixup,
	334	.probe = asus_probe,
	335	.input_mapping = asus_input_mapping,
	336	.input_configured = asus_input_configured,
	337	#ifdef CONFIG_PM
	338	.reset_resume = asus_reset_resume,
	339	#endif
	340	.raw_event = asus_raw_event
eeb01a57 YF	341	};
	342	module_hid_driver(asus_driver);
	343
	344	MODULE_LICENSE("GPL");