brintos / linux-shallow public Read only

1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 *  USB Wacom tablet support - system specific code4 */5 6#include "wacom_wac.h"7#include "wacom.h"8#include <linux/input/mt.h>9 10#define WAC_MSG_RETRIES		511#define WAC_CMD_RETRIES		1012 13#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)14#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)15#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)16 17static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,18			    size_t size, unsigned int retries)19{20	int retval;21 22	do {23		retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,24				HID_REQ_GET_REPORT);25	} while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);26 27	if (retval < 0)28		hid_err(hdev, "wacom_get_report: ran out of retries "29			"(last error = %d)\n", retval);30 31	return retval;32}33 34static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,35			    size_t size, unsigned int retries)36{37	int retval;38 39	do {40		retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,41				HID_REQ_SET_REPORT);42	} while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);43 44	if (retval < 0)45		hid_err(hdev, "wacom_set_report: ran out of retries "46			"(last error = %d)\n", retval);47 48	return retval;49}50 51static void wacom_wac_queue_insert(struct hid_device *hdev,52				   struct kfifo_rec_ptr_2 *fifo,53				   u8 *raw_data, int size)54{55	bool warned = false;56 57	while (kfifo_avail(fifo) < size) {58		if (!warned)59			hid_warn(hdev, "%s: kfifo has filled, starting to drop events\n", __func__);60		warned = true;61 62		kfifo_skip(fifo);63	}64 65	kfifo_in(fifo, raw_data, size);66}67 68static void wacom_wac_queue_flush(struct hid_device *hdev,69				  struct kfifo_rec_ptr_2 *fifo)70{71	while (!kfifo_is_empty(fifo)) {72		u8 buf[WACOM_PKGLEN_MAX];73		int size;74		int err;75 76		size = kfifo_out(fifo, buf, sizeof(buf));77		err = hid_report_raw_event(hdev, HID_INPUT_REPORT, buf, size, false);78		if (err) {79			hid_warn(hdev, "%s: unable to flush event due to error %d\n",80				 __func__, err);81		}82	}83}84 85static int wacom_wac_pen_serial_enforce(struct hid_device *hdev,86		struct hid_report *report, u8 *raw_data, int report_size)87{88	struct wacom *wacom = hid_get_drvdata(hdev);89	struct wacom_wac *wacom_wac = &wacom->wacom_wac;90	struct wacom_features *features = &wacom_wac->features;91	bool flush = false;92	bool insert = false;93	int i, j;94 95	if (wacom_wac->serial[0] || !(features->quirks & WACOM_QUIRK_TOOLSERIAL))96		return 0;97 98	/* Queue events which have invalid tool type or serial number */99	for (i = 0; i < report->maxfield; i++) {100		for (j = 0; j < report->field[i]->maxusage; j++) {101			struct hid_field *field = report->field[i];102			struct hid_usage *usage = &field->usage[j];103			unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);104			unsigned int offset;105			unsigned int size;106			unsigned int value;107 108			if (equivalent_usage != HID_DG_INRANGE &&109			    equivalent_usage != HID_DG_TOOLSERIALNUMBER &&110			    equivalent_usage != WACOM_HID_WD_SERIALHI &&111			    equivalent_usage != WACOM_HID_WD_TOOLTYPE)112				continue;113 114			offset = field->report_offset;115			size = field->report_size;116			value = hid_field_extract(hdev, raw_data+1, offset + j * size, size);117 118			/* If we go out of range, we need to flush the queue ASAP */119			if (equivalent_usage == HID_DG_INRANGE)120				value = !value;121 122			if (value) {123				flush = true;124				switch (equivalent_usage) {125				case HID_DG_TOOLSERIALNUMBER:126					wacom_wac->serial[0] = value;127					break;128 129				case WACOM_HID_WD_SERIALHI:130					wacom_wac->serial[0] |= ((__u64)value) << 32;131					break;132 133				case WACOM_HID_WD_TOOLTYPE:134					wacom_wac->id[0] = value;135					break;136				}137			}138			else {139				insert = true;140			}141		}142	}143 144	if (flush)145		wacom_wac_queue_flush(hdev, wacom_wac->pen_fifo);146	else if (insert)147		wacom_wac_queue_insert(hdev, wacom_wac->pen_fifo,148				       raw_data, report_size);149 150	return insert && !flush;151}152 153static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,154		u8 *raw_data, int size)155{156	struct wacom *wacom = hid_get_drvdata(hdev);157 158	if (wacom->wacom_wac.features.type == BOOTLOADER)159		return 0;160 161	if (size > WACOM_PKGLEN_MAX)162		return 1;163 164	if (wacom_wac_pen_serial_enforce(hdev, report, raw_data, size))165		return -1;166 167	memcpy(wacom->wacom_wac.data, raw_data, size);168 169	wacom_wac_irq(&wacom->wacom_wac, size);170 171	return 0;172}173 174static int wacom_open(struct input_dev *dev)175{176	struct wacom *wacom = input_get_drvdata(dev);177 178	return hid_hw_open(wacom->hdev);179}180 181static void wacom_close(struct input_dev *dev)182{183	struct wacom *wacom = input_get_drvdata(dev);184 185	/*186	 * wacom->hdev should never be null, but surprisingly, I had the case187	 * once while unplugging the Wacom Wireless Receiver.188	 */189	if (wacom->hdev)190		hid_hw_close(wacom->hdev);191}192 193/*194 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.195 */196static int wacom_calc_hid_res(int logical_extents, int physical_extents,197			       unsigned unit, int exponent)198{199	struct hid_field field = {200		.logical_maximum = logical_extents,201		.physical_maximum = physical_extents,202		.unit = unit,203		.unit_exponent = exponent,204	};205 206	return hidinput_calc_abs_res(&field, ABS_X);207}208 209static void wacom_hid_usage_quirk(struct hid_device *hdev,210		struct hid_field *field, struct hid_usage *usage)211{212	struct wacom *wacom = hid_get_drvdata(hdev);213	struct wacom_features *features = &wacom->wacom_wac.features;214	unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);215 216	/*217	 * The Dell Canvas 27 needs to be switched to its vendor-defined218	 * report to provide the best resolution.219	 */220	if (hdev->vendor == USB_VENDOR_ID_WACOM &&221	    hdev->product == 0x4200 &&222	    field->application == HID_UP_MSVENDOR) {223		wacom->wacom_wac.mode_report = field->report->id;224		wacom->wacom_wac.mode_value = 2;225	}226 227	/*228	 * ISDv4 devices which predate HID's adoption of the229	 * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its230	 * position instead. We can accurately detect if a231	 * usage with that value should be HID_DG_BARRELSWITCH2232	 * based on the surrounding usages, which have remained233	 * constant across generations.234	 */235	if (features->type == HID_GENERIC &&236	    usage->hid == 0x000D0000 &&237	    field->application == HID_DG_PEN &&238	    field->physical == HID_DG_STYLUS) {239		int i = usage->usage_index;240 241		if (i-4 >= 0 && i+1 < field->maxusage &&242		    field->usage[i-4].hid == HID_DG_TIPSWITCH &&243		    field->usage[i-3].hid == HID_DG_BARRELSWITCH &&244		    field->usage[i-2].hid == HID_DG_ERASER &&245		    field->usage[i-1].hid == HID_DG_INVERT &&246		    field->usage[i+1].hid == HID_DG_INRANGE) {247			usage->hid = HID_DG_BARRELSWITCH2;248		}249	}250 251	/*252	 * Wacom's AES devices use different vendor-defined usages to253	 * report serial number information compared to their branded254	 * hardware. The usages are also sometimes ill-defined and do255	 * not have the correct logical min/max values set. Lets patch256	 * the descriptor to use the branded usage convention and fix257	 * the errors.258	 */259	if (usage->hid == WACOM_HID_WT_SERIALNUMBER &&260	    field->report_size == 16 &&261	    field->index + 2 < field->report->maxfield) {262		struct hid_field *a = field->report->field[field->index + 1];263		struct hid_field *b = field->report->field[field->index + 2];264 265		if (a->maxusage > 0 &&266		    a->usage[0].hid == HID_DG_TOOLSERIALNUMBER &&267		    a->report_size == 32 &&268		    b->maxusage > 0 &&269		    b->usage[0].hid == 0xFF000000 &&270		    b->report_size == 8) {271			features->quirks |= WACOM_QUIRK_AESPEN;272			usage->hid = WACOM_HID_WD_TOOLTYPE;273			field->logical_minimum = S16_MIN;274			field->logical_maximum = S16_MAX;275			a->logical_minimum = S32_MIN;276			a->logical_maximum = S32_MAX;277			b->usage[0].hid = WACOM_HID_WD_SERIALHI;278			b->logical_minimum = 0;279			b->logical_maximum = U8_MAX;280		}281	}282 283	/* 2nd-generation Intuos Pro Large has incorrect Y maximum */284	if (hdev->vendor == USB_VENDOR_ID_WACOM &&285	    hdev->product == 0x0358 &&286	    WACOM_PEN_FIELD(field) &&287	    equivalent_usage == HID_GD_Y) {288		field->logical_maximum = 43200;289	}290}291 292static void wacom_feature_mapping(struct hid_device *hdev,293		struct hid_field *field, struct hid_usage *usage)294{295	struct wacom *wacom = hid_get_drvdata(hdev);296	struct wacom_features *features = &wacom->wacom_wac.features;297	struct hid_data *hid_data = &wacom->wacom_wac.hid_data;298	unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);299	u8 *data;300	int ret;301	u32 n;302 303	wacom_hid_usage_quirk(hdev, field, usage);304 305	switch (equivalent_usage) {306	case WACOM_HID_WD_TOUCH_RING_SETTING:307		wacom->generic_has_leds = true;308		break;309	case HID_DG_CONTACTMAX:310		/* leave touch_max as is if predefined */311		if (!features->touch_max) {312			/* read manually */313			n = hid_report_len(field->report);314			data = hid_alloc_report_buf(field->report, GFP_KERNEL);315			if (!data)316				break;317			data[0] = field->report->id;318			ret = wacom_get_report(hdev, HID_FEATURE_REPORT,319					       data, n, WAC_CMD_RETRIES);320			if (ret == n && features->type == HID_GENERIC) {321				ret = hid_report_raw_event(hdev,322					HID_FEATURE_REPORT, data, n, 0);323			} else if (ret == 2 && features->type != HID_GENERIC) {324				features->touch_max = data[1];325			} else {326				features->touch_max = 16;327				hid_warn(hdev, "wacom_feature_mapping: "328					 "could not get HID_DG_CONTACTMAX, "329					 "defaulting to %d\n",330					  features->touch_max);331			}332			kfree(data);333		}334		break;335	case HID_DG_INPUTMODE:336		/* Ignore if value index is out of bounds. */337		if (usage->usage_index >= field->report_count) {338			dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");339			break;340		}341 342		hid_data->inputmode = field->report->id;343		hid_data->inputmode_index = usage->usage_index;344		break;345 346	case HID_UP_DIGITIZER:347		if (field->report->id == 0x0B &&348		    (field->application == WACOM_HID_G9_PEN ||349		     field->application == WACOM_HID_G11_PEN)) {350			wacom->wacom_wac.mode_report = field->report->id;351			wacom->wacom_wac.mode_value = 0;352		}353		break;354 355	case WACOM_HID_WD_DATAMODE:356		wacom->wacom_wac.mode_report = field->report->id;357		wacom->wacom_wac.mode_value = 2;358		break;359 360	case WACOM_HID_UP_G9:361	case WACOM_HID_UP_G11:362		if (field->report->id == 0x03 &&363		    (field->application == WACOM_HID_G9_TOUCHSCREEN ||364		     field->application == WACOM_HID_G11_TOUCHSCREEN)) {365			wacom->wacom_wac.mode_report = field->report->id;366			wacom->wacom_wac.mode_value = 0;367		}368		break;369	case WACOM_HID_WD_OFFSETLEFT:370	case WACOM_HID_WD_OFFSETTOP:371	case WACOM_HID_WD_OFFSETRIGHT:372	case WACOM_HID_WD_OFFSETBOTTOM:373		/* read manually */374		n = hid_report_len(field->report);375		data = hid_alloc_report_buf(field->report, GFP_KERNEL);376		if (!data)377			break;378		data[0] = field->report->id;379		ret = wacom_get_report(hdev, HID_FEATURE_REPORT,380					data, n, WAC_CMD_RETRIES);381		if (ret == n) {382			ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT,383						   data, n, 0);384		} else {385			hid_warn(hdev, "%s: could not retrieve sensor offsets\n",386				 __func__);387		}388		kfree(data);389		break;390	}391}392 393/*394 * Interface Descriptor of wacom devices can be incomplete and395 * inconsistent so wacom_features table is used to store stylus396 * device's packet lengths, various maximum values, and tablet397 * resolution based on product ID's.398 *399 * For devices that contain 2 interfaces, wacom_features table is400 * inaccurate for the touch interface.  Since the Interface Descriptor401 * for touch interfaces has pretty complete data, this function exists402 * to query tablet for this missing information instead of hard coding in403 * an additional table.404 *405 * A typical Interface Descriptor for a stylus will contain a406 * boot mouse application collection that is not of interest and this407 * function will ignore it.408 *409 * It also contains a digitizer application collection that also is not410 * of interest since any information it contains would be duplicate411 * of what is in wacom_features. Usually it defines a report of an array412 * of bytes that could be used as max length of the stylus packet returned.413 * If it happens to define a Digitizer-Stylus Physical Collection then414 * the X and Y logical values contain valid data but it is ignored.415 *416 * A typical Interface Descriptor for a touch interface will contain a417 * Digitizer-Finger Physical Collection which will define both logical418 * X/Y maximum as well as the physical size of tablet. Since touch419 * interfaces haven't supported pressure or distance, this is enough420 * information to override invalid values in the wacom_features table.421 *422 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful423 * data. We deal with them after returning from this function.424 */425static void wacom_usage_mapping(struct hid_device *hdev,426		struct hid_field *field, struct hid_usage *usage)427{428	struct wacom *wacom = hid_get_drvdata(hdev);429	struct wacom_features *features = &wacom->wacom_wac.features;430	bool finger = WACOM_FINGER_FIELD(field);431	bool pen = WACOM_PEN_FIELD(field);432	unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);433 434	/*435	* Requiring Stylus Usage will ignore boot mouse436	* X/Y values and some cases of invalid Digitizer X/Y437	* values commonly reported.438	*/439	if (pen)440		features->device_type |= WACOM_DEVICETYPE_PEN;441	else if (finger)442		features->device_type |= WACOM_DEVICETYPE_TOUCH;443	else444		return;445 446	wacom_hid_usage_quirk(hdev, field, usage);447 448	switch (equivalent_usage) {449	case HID_GD_X:450		features->x_max = field->logical_maximum;451		if (finger) {452			features->x_phy = field->physical_maximum;453			if ((features->type != BAMBOO_PT) &&454			    (features->type != BAMBOO_TOUCH)) {455				features->unit = field->unit;456				features->unitExpo = field->unit_exponent;457			}458		}459		break;460	case HID_GD_Y:461		features->y_max = field->logical_maximum;462		if (finger) {463			features->y_phy = field->physical_maximum;464			if ((features->type != BAMBOO_PT) &&465			    (features->type != BAMBOO_TOUCH)) {466				features->unit = field->unit;467				features->unitExpo = field->unit_exponent;468			}469		}470		break;471	case HID_DG_TIPPRESSURE:472		if (pen)473			features->pressure_max = field->logical_maximum;474		break;475	}476 477	if (features->type == HID_GENERIC)478		wacom_wac_usage_mapping(hdev, field, usage);479}480 481static void wacom_post_parse_hid(struct hid_device *hdev,482				 struct wacom_features *features)483{484	struct wacom *wacom = hid_get_drvdata(hdev);485	struct wacom_wac *wacom_wac = &wacom->wacom_wac;486 487	if (features->type == HID_GENERIC) {488		/* Any last-minute generic device setup */489		if (wacom_wac->has_mode_change) {490			if (wacom_wac->is_direct_mode)491				features->device_type |= WACOM_DEVICETYPE_DIRECT;492			else493				features->device_type &= ~WACOM_DEVICETYPE_DIRECT;494		}495 496		if (features->touch_max > 1) {497			if (features->device_type & WACOM_DEVICETYPE_DIRECT)498				input_mt_init_slots(wacom_wac->touch_input,499						    wacom_wac->features.touch_max,500						    INPUT_MT_DIRECT);501			else502				input_mt_init_slots(wacom_wac->touch_input,503						    wacom_wac->features.touch_max,504						    INPUT_MT_POINTER);505		}506	}507}508 509static void wacom_parse_hid(struct hid_device *hdev,510			   struct wacom_features *features)511{512	struct hid_report_enum *rep_enum;513	struct hid_report *hreport;514	int i, j;515 516	/* check features first */517	rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];518	list_for_each_entry(hreport, &rep_enum->report_list, list) {519		for (i = 0; i < hreport->maxfield; i++) {520			/* Ignore if report count is out of bounds. */521			if (hreport->field[i]->report_count < 1)522				continue;523 524			for (j = 0; j < hreport->field[i]->maxusage; j++) {525				wacom_feature_mapping(hdev, hreport->field[i],526						hreport->field[i]->usage + j);527			}528		}529	}530 531	/* now check the input usages */532	rep_enum = &hdev->report_enum[HID_INPUT_REPORT];533	list_for_each_entry(hreport, &rep_enum->report_list, list) {534 535		if (!hreport->maxfield)536			continue;537 538		for (i = 0; i < hreport->maxfield; i++)539			for (j = 0; j < hreport->field[i]->maxusage; j++)540				wacom_usage_mapping(hdev, hreport->field[i],541						hreport->field[i]->usage + j);542	}543 544	wacom_post_parse_hid(hdev, features);545}546 547static int wacom_hid_set_device_mode(struct hid_device *hdev)548{549	struct wacom *wacom = hid_get_drvdata(hdev);550	struct hid_data *hid_data = &wacom->wacom_wac.hid_data;551	struct hid_report *r;552	struct hid_report_enum *re;553 554	if (hid_data->inputmode < 0)555		return 0;556 557	re = &(hdev->report_enum[HID_FEATURE_REPORT]);558	r = re->report_id_hash[hid_data->inputmode];559	if (r) {560		r->field[0]->value[hid_data->inputmode_index] = 2;561		hid_hw_request(hdev, r, HID_REQ_SET_REPORT);562	}563	return 0;564}565 566static int wacom_set_device_mode(struct hid_device *hdev,567				 struct wacom_wac *wacom_wac)568{569	u8 *rep_data;570	struct hid_report *r;571	struct hid_report_enum *re;572	u32 length;573	int error = -ENOMEM, limit = 0;574 575	if (wacom_wac->mode_report < 0)576		return 0;577 578	re = &(hdev->report_enum[HID_FEATURE_REPORT]);579	r = re->report_id_hash[wacom_wac->mode_report];580	if (!r)581		return -EINVAL;582 583	rep_data = hid_alloc_report_buf(r, GFP_KERNEL);584	if (!rep_data)585		return -ENOMEM;586 587	length = hid_report_len(r);588 589	do {590		rep_data[0] = wacom_wac->mode_report;591		rep_data[1] = wacom_wac->mode_value;592 593		error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,594					 length, 1);595		if (error >= 0)596			error = wacom_get_report(hdev, HID_FEATURE_REPORT,597			                         rep_data, length, 1);598	} while (error >= 0 &&599		 rep_data[1] != wacom_wac->mode_report &&600		 limit++ < WAC_MSG_RETRIES);601 602	kfree(rep_data);603 604	return error < 0 ? error : 0;605}606 607static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,608		struct wacom_features *features)609{610	struct wacom *wacom = hid_get_drvdata(hdev);611	int ret;612	u8 rep_data[2];613 614	switch (features->type) {615	case GRAPHIRE_BT:616		rep_data[0] = 0x03;617		rep_data[1] = 0x00;618		ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,619					3);620 621		if (ret >= 0) {622			rep_data[0] = speed == 0 ? 0x05 : 0x06;623			rep_data[1] = 0x00;624 625			ret = wacom_set_report(hdev, HID_FEATURE_REPORT,626						rep_data, 2, 3);627 628			if (ret >= 0) {629				wacom->wacom_wac.bt_high_speed = speed;630				return 0;631			}632		}633 634		/*635		 * Note that if the raw queries fail, it's not a hard failure636		 * and it is safe to continue637		 */638		hid_warn(hdev, "failed to poke device, command %d, err %d\n",639			 rep_data[0], ret);640		break;641	case INTUOS4WL:642		if (speed == 1)643			wacom->wacom_wac.bt_features &= ~0x20;644		else645			wacom->wacom_wac.bt_features |= 0x20;646 647		rep_data[0] = 0x03;648		rep_data[1] = wacom->wacom_wac.bt_features;649 650		ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,651					1);652		if (ret >= 0)653			wacom->wacom_wac.bt_high_speed = speed;654		break;655	}656 657	return 0;658}659 660/*661 * Switch the tablet into its most-capable mode. Wacom tablets are662 * typically configured to power-up in a mode which sends mouse-like663 * reports to the OS. To get absolute position, pressure data, etc.664 * from the tablet, it is necessary to switch the tablet out of this665 * mode and into one which sends the full range of tablet data.666 */667static int _wacom_query_tablet_data(struct wacom *wacom)668{669	struct hid_device *hdev = wacom->hdev;670	struct wacom_wac *wacom_wac = &wacom->wacom_wac;671	struct wacom_features *features = &wacom_wac->features;672 673	if (hdev->bus == BUS_BLUETOOTH)674		return wacom_bt_query_tablet_data(hdev, 1, features);675 676	if (features->type != HID_GENERIC) {677		if (features->device_type & WACOM_DEVICETYPE_TOUCH) {678			if (features->type > TABLETPC) {679				/* MT Tablet PC touch */680				wacom_wac->mode_report = 3;681				wacom_wac->mode_value = 4;682			} else if (features->type == WACOM_24HDT) {683				wacom_wac->mode_report = 18;684				wacom_wac->mode_value = 2;685			} else if (features->type == WACOM_27QHDT) {686				wacom_wac->mode_report = 131;687				wacom_wac->mode_value = 2;688			} else if (features->type == BAMBOO_PAD) {689				wacom_wac->mode_report = 2;690				wacom_wac->mode_value = 2;691			}692		} else if (features->device_type & WACOM_DEVICETYPE_PEN) {693			if (features->type <= BAMBOO_PT) {694				wacom_wac->mode_report = 2;695				wacom_wac->mode_value = 2;696			}697		}698	}699 700	wacom_set_device_mode(hdev, wacom_wac);701 702	if (features->type == HID_GENERIC)703		return wacom_hid_set_device_mode(hdev);704 705	return 0;706}707 708static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,709					 struct wacom_features *features)710{711	struct wacom *wacom = hid_get_drvdata(hdev);712	struct usb_interface *intf = wacom->intf;713 714	/* default features */715	features->x_fuzz = 4;716	features->y_fuzz = 4;717	features->pressure_fuzz = 0;718	features->distance_fuzz = 1;719	features->tilt_fuzz = 1;720 721	/*722	 * The wireless device HID is basic and layout conflicts with723	 * other tablets (monitor and touch interface can look like pen).724	 * Skip the query for this type and modify defaults based on725	 * interface number.726	 */727	if (features->type == WIRELESS && intf) {728		if (intf->cur_altsetting->desc.bInterfaceNumber == 0)729			features->device_type = WACOM_DEVICETYPE_WL_MONITOR;730		else731			features->device_type = WACOM_DEVICETYPE_NONE;732		return;733	}734 735	wacom_parse_hid(hdev, features);736}737 738struct wacom_hdev_data {739	struct list_head list;740	struct kref kref;741	struct hid_device *dev;742	struct wacom_shared shared;743};744 745static LIST_HEAD(wacom_udev_list);746static DEFINE_MUTEX(wacom_udev_list_lock);747 748static bool wacom_are_sibling(struct hid_device *hdev,749		struct hid_device *sibling)750{751	struct wacom *wacom = hid_get_drvdata(hdev);752	struct wacom_features *features = &wacom->wacom_wac.features;753	struct wacom *sibling_wacom = hid_get_drvdata(sibling);754	struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features;755	__u32 oVid = features->oVid ? features->oVid : hdev->vendor;756	__u32 oPid = features->oPid ? features->oPid : hdev->product;757 758	/* The defined oVid/oPid must match that of the sibling */759	if (features->oVid != HID_ANY_ID && sibling->vendor != oVid)760		return false;761	if (features->oPid != HID_ANY_ID && sibling->product != oPid)762		return false;763 764	/*765	 * Devices with the same VID/PID must share the same physical766	 * device path, while those with different VID/PID must share767	 * the same physical parent device path.768	 */769	if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) {770		if (!hid_compare_device_paths(hdev, sibling, '/'))771			return false;772	} else {773		if (!hid_compare_device_paths(hdev, sibling, '.'))774			return false;775	}776 777	/* Skip the remaining heuristics unless you are a HID_GENERIC device */778	if (features->type != HID_GENERIC)779		return true;780 781	/*782	 * Direct-input devices may not be siblings of indirect-input783	 * devices.784	 */785	if ((features->device_type & WACOM_DEVICETYPE_DIRECT) &&786	    !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))787		return false;788 789	/*790	 * Indirect-input devices may not be siblings of direct-input791	 * devices.792	 */793	if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) &&794	    (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT))795		return false;796 797	/* Pen devices may only be siblings of touch devices */798	if ((features->device_type & WACOM_DEVICETYPE_PEN) &&799	    !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH))800		return false;801 802	/* Touch devices may only be siblings of pen devices */803	if ((features->device_type & WACOM_DEVICETYPE_TOUCH) &&804	    !(sibling_features->device_type & WACOM_DEVICETYPE_PEN))805		return false;806 807	/*808	 * No reason could be found for these two devices to NOT be809	 * siblings, so there's a good chance they ARE siblings810	 */811	return true;812}813 814static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)815{816	struct wacom_hdev_data *data;817 818	/* Try to find an already-probed interface from the same device */819	list_for_each_entry(data, &wacom_udev_list, list) {820		if (hid_compare_device_paths(hdev, data->dev, '/')) {821			kref_get(&data->kref);822			return data;823		}824	}825 826	/* Fallback to finding devices that appear to be "siblings" */827	list_for_each_entry(data, &wacom_udev_list, list) {828		if (wacom_are_sibling(hdev, data->dev)) {829			kref_get(&data->kref);830			return data;831		}832	}833 834	return NULL;835}836 837static void wacom_release_shared_data(struct kref *kref)838{839	struct wacom_hdev_data *data =840		container_of(kref, struct wacom_hdev_data, kref);841 842	mutex_lock(&wacom_udev_list_lock);843	list_del(&data->list);844	mutex_unlock(&wacom_udev_list_lock);845 846	kfree(data);847}848 849static void wacom_remove_shared_data(void *res)850{851	struct wacom *wacom = res;852	struct wacom_hdev_data *data;853	struct wacom_wac *wacom_wac = &wacom->wacom_wac;854 855	if (wacom_wac->shared) {856		data = container_of(wacom_wac->shared, struct wacom_hdev_data,857				    shared);858 859		if (wacom_wac->shared->touch == wacom->hdev)860			wacom_wac->shared->touch = NULL;861		else if (wacom_wac->shared->pen == wacom->hdev)862			wacom_wac->shared->pen = NULL;863 864		kref_put(&data->kref, wacom_release_shared_data);865		wacom_wac->shared = NULL;866	}867}868 869static int wacom_add_shared_data(struct hid_device *hdev)870{871	struct wacom *wacom = hid_get_drvdata(hdev);872	struct wacom_wac *wacom_wac = &wacom->wacom_wac;873	struct wacom_hdev_data *data;874	int retval = 0;875 876	mutex_lock(&wacom_udev_list_lock);877 878	data = wacom_get_hdev_data(hdev);879	if (!data) {880		data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);881		if (!data) {882			mutex_unlock(&wacom_udev_list_lock);883			return -ENOMEM;884		}885 886		kref_init(&data->kref);887		data->dev = hdev;888		list_add_tail(&data->list, &wacom_udev_list);889	}890 891	mutex_unlock(&wacom_udev_list_lock);892 893	wacom_wac->shared = &data->shared;894 895	retval = devm_add_action_or_reset(&hdev->dev, wacom_remove_shared_data, wacom);896	if (retval)897		return retval;898 899	if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)900		wacom_wac->shared->touch = hdev;901	else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)902		wacom_wac->shared->pen = hdev;903 904	return retval;905}906 907static int wacom_led_control(struct wacom *wacom)908{909	unsigned char *buf;910	int retval;911	unsigned char report_id = WAC_CMD_LED_CONTROL;912	int buf_size = 9;913 914	if (!wacom->led.groups)915		return -ENOTSUPP;916 917	if (wacom->wacom_wac.features.type == REMOTE)918		return -ENOTSUPP;919 920	if (wacom->wacom_wac.pid) { /* wireless connected */921		report_id = WAC_CMD_WL_LED_CONTROL;922		buf_size = 13;923	}924	else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {925		report_id = WAC_CMD_WL_INTUOSP2;926		buf_size = 51;927	}928	buf = kzalloc(buf_size, GFP_KERNEL);929	if (!buf)930		return -ENOMEM;931 932	if (wacom->wacom_wac.features.type == HID_GENERIC) {933		buf[0] = WAC_CMD_LED_CONTROL_GENERIC;934		buf[1] = wacom->led.llv;935		buf[2] = wacom->led.groups[0].select & 0x03;936 937	} else if ((wacom->wacom_wac.features.type >= INTUOS5S &&938	    wacom->wacom_wac.features.type <= INTUOSPL)) {939		/*940		 * Touch Ring and crop mark LED luminance may take on941		 * one of four values:942		 *    0 = Low; 1 = Medium; 2 = High; 3 = Off943		 */944		int ring_led = wacom->led.groups[0].select & 0x03;945		int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;946		int crop_lum = 0;947		unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);948 949		buf[0] = report_id;950		if (wacom->wacom_wac.pid) {951			wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,952					 buf, buf_size, WAC_CMD_RETRIES);953			buf[0] = report_id;954			buf[4] = led_bits;955		} else956			buf[1] = led_bits;957	}958	else if (wacom->wacom_wac.features.type == INTUOSP2_BT) {959		buf[0] = report_id;960		buf[4] = 100; // Power Connection LED (ORANGE)961		buf[5] = 100; // BT Connection LED (BLUE)962		buf[6] = 100; // Paper Mode (RED?)963		buf[7] = 100; // Paper Mode (GREEN?)964		buf[8] = 100; // Paper Mode (BLUE?)965		buf[9] = wacom->led.llv;966		buf[10] = wacom->led.groups[0].select & 0x03;967	}968	else {969		int led = wacom->led.groups[0].select | 0x4;970 971		if (wacom->wacom_wac.features.type == WACOM_21UX2 ||972		    wacom->wacom_wac.features.type == WACOM_24HD)973			led |= (wacom->led.groups[1].select << 4) | 0x40;974 975		buf[0] = report_id;976		buf[1] = led;977		buf[2] = wacom->led.llv;978		buf[3] = wacom->led.hlv;979		buf[4] = wacom->led.img_lum;980	}981 982	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,983				  WAC_CMD_RETRIES);984	kfree(buf);985 986	return retval;987}988 989static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,990		const unsigned len, const void *img)991{992	unsigned char *buf;993	int i, retval;994	const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */995 996	buf = kzalloc(chunk_len + 3 , GFP_KERNEL);997	if (!buf)998		return -ENOMEM;999 1000	/* Send 'start' command */1001	buf[0] = WAC_CMD_ICON_START;1002	buf[1] = 1;1003	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,1004				  WAC_CMD_RETRIES);1005	if (retval < 0)1006		goto out;1007 1008	buf[0] = xfer_id;1009	buf[1] = button_id & 0x07;1010	for (i = 0; i < 4; i++) {1011		buf[2] = i;1012		memcpy(buf + 3, img + i * chunk_len, chunk_len);1013 1014		retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,1015					  buf, chunk_len + 3, WAC_CMD_RETRIES);1016		if (retval < 0)1017			break;1018	}1019 1020	/* Send 'stop' */1021	buf[0] = WAC_CMD_ICON_START;1022	buf[1] = 0;1023	wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,1024			 WAC_CMD_RETRIES);1025 1026out:1027	kfree(buf);1028	return retval;1029}1030 1031static ssize_t wacom_led_select_store(struct device *dev, int set_id,1032				      const char *buf, size_t count)1033{1034	struct hid_device *hdev = to_hid_device(dev);1035	struct wacom *wacom = hid_get_drvdata(hdev);1036	unsigned int id;1037	int err;1038 1039	err = kstrtouint(buf, 10, &id);1040	if (err)1041		return err;1042 1043	mutex_lock(&wacom->lock);1044 1045	wacom->led.groups[set_id].select = id & 0x3;1046	err = wacom_led_control(wacom);1047 1048	mutex_unlock(&wacom->lock);1049 1050	return err < 0 ? err : count;1051}1052 1053#define DEVICE_LED_SELECT_ATTR(SET_ID)					\1054static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,	\1055	struct device_attribute *attr, const char *buf, size_t count)	\1056{									\1057	return wacom_led_select_store(dev, SET_ID, buf, count);		\1058}									\1059static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,	\1060	struct device_attribute *attr, char *buf)			\1061{									\1062	struct hid_device *hdev = to_hid_device(dev);\1063	struct wacom *wacom = hid_get_drvdata(hdev);			\1064	return scnprintf(buf, PAGE_SIZE, "%d\n",			\1065			 wacom->led.groups[SET_ID].select);		\1066}									\1067static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,	\1068		    wacom_led##SET_ID##_select_show,			\1069		    wacom_led##SET_ID##_select_store)1070 1071DEVICE_LED_SELECT_ATTR(0);1072DEVICE_LED_SELECT_ATTR(1);1073 1074static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,1075				     const char *buf, size_t count)1076{1077	unsigned int value;1078	int err;1079 1080	err = kstrtouint(buf, 10, &value);1081	if (err)1082		return err;1083 1084	mutex_lock(&wacom->lock);1085 1086	*dest = value & 0x7f;1087	err = wacom_led_control(wacom);1088 1089	mutex_unlock(&wacom->lock);1090 1091	return err < 0 ? err : count;1092}1093 1094#define DEVICE_LUMINANCE_ATTR(name, field)				\1095static ssize_t wacom_##name##_luminance_store(struct device *dev,	\1096	struct device_attribute *attr, const char *buf, size_t count)	\1097{									\1098	struct hid_device *hdev = to_hid_device(dev);\1099	struct wacom *wacom = hid_get_drvdata(hdev);			\1100									\1101	return wacom_luminance_store(wacom, &wacom->led.field,		\1102				     buf, count);			\1103}									\1104static ssize_t wacom_##name##_luminance_show(struct device *dev,	\1105	struct device_attribute *attr, char *buf)			\1106{									\1107	struct wacom *wacom = dev_get_drvdata(dev);			\1108	return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field);	\1109}									\1110static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,			\1111		   wacom_##name##_luminance_show,			\1112		   wacom_##name##_luminance_store)1113 1114DEVICE_LUMINANCE_ATTR(status0, llv);1115DEVICE_LUMINANCE_ATTR(status1, hlv);1116DEVICE_LUMINANCE_ATTR(buttons, img_lum);1117 1118static ssize_t wacom_button_image_store(struct device *dev, int button_id,1119					const char *buf, size_t count)1120{1121	struct hid_device *hdev = to_hid_device(dev);1122	struct wacom *wacom = hid_get_drvdata(hdev);1123	int err;1124	unsigned len;1125	u8 xfer_id;1126 1127	if (hdev->bus == BUS_BLUETOOTH) {1128		len = 256;1129		xfer_id = WAC_CMD_ICON_BT_XFER;1130	} else {1131		len = 1024;1132		xfer_id = WAC_CMD_ICON_XFER;1133	}1134 1135	if (count != len)1136		return -EINVAL;1137 1138	mutex_lock(&wacom->lock);1139 1140	err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);1141 1142	mutex_unlock(&wacom->lock);1143 1144	return err < 0 ? err : count;1145}1146 1147#define DEVICE_BTNIMG_ATTR(BUTTON_ID)					\1148static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev,	\1149	struct device_attribute *attr, const char *buf, size_t count)	\1150{									\1151	return wacom_button_image_store(dev, BUTTON_ID, buf, count);	\1152}									\1153static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,	\1154		   NULL, wacom_btnimg##BUTTON_ID##_store)1155 1156DEVICE_BTNIMG_ATTR(0);1157DEVICE_BTNIMG_ATTR(1);1158DEVICE_BTNIMG_ATTR(2);1159DEVICE_BTNIMG_ATTR(3);1160DEVICE_BTNIMG_ATTR(4);1161DEVICE_BTNIMG_ATTR(5);1162DEVICE_BTNIMG_ATTR(6);1163DEVICE_BTNIMG_ATTR(7);1164 1165static struct attribute *cintiq_led_attrs[] = {1166	&dev_attr_status_led0_select.attr,1167	&dev_attr_status_led1_select.attr,1168	NULL1169};1170 1171static const struct attribute_group cintiq_led_attr_group = {1172	.name = "wacom_led",1173	.attrs = cintiq_led_attrs,1174};1175 1176static struct attribute *intuos4_led_attrs[] = {1177	&dev_attr_status0_luminance.attr,1178	&dev_attr_status1_luminance.attr,1179	&dev_attr_status_led0_select.attr,1180	&dev_attr_buttons_luminance.attr,1181	&dev_attr_button0_rawimg.attr,1182	&dev_attr_button1_rawimg.attr,1183	&dev_attr_button2_rawimg.attr,1184	&dev_attr_button3_rawimg.attr,1185	&dev_attr_button4_rawimg.attr,1186	&dev_attr_button5_rawimg.attr,1187	&dev_attr_button6_rawimg.attr,1188	&dev_attr_button7_rawimg.attr,1189	NULL1190};1191 1192static const struct attribute_group intuos4_led_attr_group = {1193	.name = "wacom_led",1194	.attrs = intuos4_led_attrs,1195};1196 1197static struct attribute *intuos5_led_attrs[] = {1198	&dev_attr_status0_luminance.attr,1199	&dev_attr_status_led0_select.attr,1200	NULL1201};1202 1203static const struct attribute_group intuos5_led_attr_group = {1204	.name = "wacom_led",1205	.attrs = intuos5_led_attrs,1206};1207 1208static struct attribute *generic_led_attrs[] = {1209	&dev_attr_status0_luminance.attr,1210	&dev_attr_status_led0_select.attr,1211	NULL1212};1213 1214static const struct attribute_group generic_led_attr_group = {1215	.name = "wacom_led",1216	.attrs = generic_led_attrs,1217};1218 1219struct wacom_sysfs_group_devres {1220	const struct attribute_group *group;1221	struct kobject *root;1222};1223 1224static void wacom_devm_sysfs_group_release(struct device *dev, void *res)1225{1226	struct wacom_sysfs_group_devres *devres = res;1227	struct kobject *kobj = devres->root;1228 1229	dev_dbg(dev, "%s: dropping reference to %s\n",1230		__func__, devres->group->name);1231	sysfs_remove_group(kobj, devres->group);1232}1233 1234static int __wacom_devm_sysfs_create_group(struct wacom *wacom,1235					   struct kobject *root,1236					   const struct attribute_group *group)1237{1238	struct wacom_sysfs_group_devres *devres;1239	int error;1240 1241	devres = devres_alloc(wacom_devm_sysfs_group_release,1242			      sizeof(struct wacom_sysfs_group_devres),1243			      GFP_KERNEL);1244	if (!devres)1245		return -ENOMEM;1246 1247	devres->group = group;1248	devres->root = root;1249 1250	error = sysfs_create_group(devres->root, group);1251	if (error) {1252		devres_free(devres);1253		return error;1254	}1255 1256	devres_add(&wacom->hdev->dev, devres);1257 1258	return 0;1259}1260 1261static int wacom_devm_sysfs_create_group(struct wacom *wacom,1262					 const struct attribute_group *group)1263{1264	return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,1265					       group);1266}1267 1268static void wacom_devm_kfifo_release(struct device *dev, void *res)1269{1270	struct kfifo_rec_ptr_2 *devres = res;1271 1272	kfifo_free(devres);1273}1274 1275static int wacom_devm_kfifo_alloc(struct wacom *wacom)1276{1277	struct wacom_wac *wacom_wac = &wacom->wacom_wac;1278	struct kfifo_rec_ptr_2 *pen_fifo;1279	int error;1280 1281	pen_fifo = devres_alloc(wacom_devm_kfifo_release,1282			      sizeof(struct kfifo_rec_ptr_2),1283			      GFP_KERNEL);1284 1285	if (!pen_fifo)1286		return -ENOMEM;1287 1288	error = kfifo_alloc(pen_fifo, WACOM_PKGLEN_MAX, GFP_KERNEL);1289	if (error) {1290		devres_free(pen_fifo);1291		return error;1292	}1293 1294	devres_add(&wacom->hdev->dev, pen_fifo);1295	wacom_wac->pen_fifo = pen_fifo;1296 1297	return 0;1298}1299 1300enum led_brightness wacom_leds_brightness_get(struct wacom_led *led)1301{1302	struct wacom *wacom = led->wacom;1303 1304	if (wacom->led.max_hlv)1305		return led->hlv * LED_FULL / wacom->led.max_hlv;1306 1307	if (wacom->led.max_llv)1308		return led->llv * LED_FULL / wacom->led.max_llv;1309 1310	/* device doesn't support brightness tuning */1311	return LED_FULL;1312}1313 1314static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev)1315{1316	struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);1317	struct wacom *wacom = led->wacom;1318 1319	if (wacom->led.groups[led->group].select != led->id)1320		return LED_OFF;1321 1322	return wacom_leds_brightness_get(led);1323}1324 1325static int wacom_led_brightness_set(struct led_classdev *cdev,1326				    enum led_brightness brightness)1327{1328	struct wacom_led *led = container_of(cdev, struct wacom_led, cdev);1329	struct wacom *wacom = led->wacom;1330	int error;1331 1332	mutex_lock(&wacom->lock);1333 1334	if (!wacom->led.groups || (brightness == LED_OFF &&1335	    wacom->led.groups[led->group].select != led->id)) {1336		error = 0;1337		goto out;1338	}1339 1340	led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL;1341	led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL;1342 1343	wacom->led.groups[led->group].select = led->id;1344 1345	error = wacom_led_control(wacom);1346 1347out:1348	mutex_unlock(&wacom->lock);1349 1350	return error;1351}1352 1353static void wacom_led_readonly_brightness_set(struct led_classdev *cdev,1354					       enum led_brightness brightness)1355{1356}1357 1358static int wacom_led_register_one(struct device *dev, struct wacom *wacom,1359				  struct wacom_led *led, unsigned int group,1360				  unsigned int id, bool read_only)1361{1362	int error;1363	char *name;1364 1365	name = devm_kasprintf(dev, GFP_KERNEL,1366			      "%s::wacom-%d.%d",1367			      dev_name(dev),1368			      group,1369			      id);1370	if (!name)1371		return -ENOMEM;1372 1373	if (!read_only) {1374		led->trigger.name = name;1375		error = devm_led_trigger_register(dev, &led->trigger);1376		if (error) {1377			hid_err(wacom->hdev,1378				"failed to register LED trigger %s: %d\n",1379				led->cdev.name, error);1380			return error;1381		}1382	}1383 1384	led->group = group;1385	led->id = id;1386	led->wacom = wacom;1387	led->llv = wacom->led.llv;1388	led->hlv = wacom->led.hlv;1389	led->cdev.name = name;1390	led->cdev.max_brightness = LED_FULL;1391	led->cdev.flags = LED_HW_PLUGGABLE;1392	led->cdev.brightness_get = __wacom_led_brightness_get;1393	if (!read_only) {1394		led->cdev.brightness_set_blocking = wacom_led_brightness_set;1395		led->cdev.default_trigger = led->cdev.name;1396	} else {1397		led->cdev.brightness_set = wacom_led_readonly_brightness_set;1398	}1399 1400	error = devm_led_classdev_register(dev, &led->cdev);1401	if (error) {1402		hid_err(wacom->hdev,1403			"failed to register LED %s: %d\n",1404			led->cdev.name, error);1405		led->cdev.name = NULL;1406		return error;1407	}1408 1409	return 0;1410}1411 1412static void wacom_led_groups_release_one(void *data)1413{1414	struct wacom_group_leds *group = data;1415 1416	devres_release_group(group->dev, group);1417}1418 1419static int wacom_led_groups_alloc_and_register_one(struct device *dev,1420						   struct wacom *wacom,1421						   int group_id, int count,1422						   bool read_only)1423{1424	struct wacom_led *leds;1425	int i, error;1426 1427	if (group_id >= wacom->led.count || count <= 0)1428		return -EINVAL;1429 1430	if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL))1431		return -ENOMEM;1432 1433	leds = devm_kcalloc(dev, count, sizeof(struct wacom_led), GFP_KERNEL);1434	if (!leds) {1435		error = -ENOMEM;1436		goto err;1437	}1438 1439	wacom->led.groups[group_id].leds = leds;1440	wacom->led.groups[group_id].count = count;1441 1442	for (i = 0; i < count; i++) {1443		error = wacom_led_register_one(dev, wacom, &leds[i],1444					       group_id, i, read_only);1445		if (error)1446			goto err;1447	}1448 1449	wacom->led.groups[group_id].dev = dev;1450 1451	devres_close_group(dev, &wacom->led.groups[group_id]);1452 1453	/*1454	 * There is a bug (?) in devm_led_classdev_register() in which its1455	 * increments the refcount of the parent. If the parent is an input1456	 * device, that means the ref count never reaches 0 when1457	 * devm_input_device_release() gets called.1458	 * This means that the LEDs are still there after disconnect.1459	 * Manually force the release of the group so that the leds are released1460	 * once we are done using them.1461	 */1462	error = devm_add_action_or_reset(&wacom->hdev->dev,1463					 wacom_led_groups_release_one,1464					 &wacom->led.groups[group_id]);1465	if (error)1466		return error;1467 1468	return 0;1469 1470err:1471	devres_release_group(dev, &wacom->led.groups[group_id]);1472	return error;1473}1474 1475struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id,1476				 unsigned int id)1477{1478	struct wacom_group_leds *group;1479 1480	if (group_id >= wacom->led.count)1481		return NULL;1482 1483	group = &wacom->led.groups[group_id];1484 1485	if (!group->leds)1486		return NULL;1487 1488	id %= group->count;1489 1490	return &group->leds[id];1491}1492 1493/*1494 * wacom_led_next: gives the next available led with a wacom trigger.1495 *1496 * returns the next available struct wacom_led which has its default trigger1497 * or the current one if none is available.1498 */1499struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur)1500{1501	struct wacom_led *next_led;1502	int group, next;1503 1504	if (!wacom || !cur)1505		return NULL;1506 1507	group = cur->group;1508	next = cur->id;1509 1510	do {1511		next_led = wacom_led_find(wacom, group, ++next);1512		if (!next_led || next_led == cur)1513			return next_led;1514	} while (next_led->cdev.trigger != &next_led->trigger);1515 1516	return next_led;1517}1518 1519static void wacom_led_groups_release(void *data)1520{1521	struct wacom *wacom = data;1522 1523	wacom->led.groups = NULL;1524	wacom->led.count = 0;1525}1526 1527static int wacom_led_groups_allocate(struct wacom *wacom, int count)1528{1529	struct device *dev = &wacom->hdev->dev;1530	struct wacom_group_leds *groups;1531	int error;1532 1533	groups = devm_kcalloc(dev, count, sizeof(struct wacom_group_leds),1534			      GFP_KERNEL);1535	if (!groups)1536		return -ENOMEM;1537 1538	error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom);1539	if (error)1540		return error;1541 1542	wacom->led.groups = groups;1543	wacom->led.count = count;1544 1545	return 0;1546}1547 1548static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count,1549					 int led_per_group, bool read_only)1550{1551	struct device *dev;1552	int i, error;1553 1554	if (!wacom->wacom_wac.pad_input)1555		return -EINVAL;1556 1557	dev = &wacom->wacom_wac.pad_input->dev;1558 1559	error = wacom_led_groups_allocate(wacom, group_count);1560	if (error)1561		return error;1562 1563	for (i = 0; i < group_count; i++) {1564		error = wacom_led_groups_alloc_and_register_one(dev, wacom, i,1565								led_per_group,1566								read_only);1567		if (error)1568			return error;1569	}1570 1571	return 0;1572}1573 1574int wacom_initialize_leds(struct wacom *wacom)1575{1576	int error;1577 1578	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))1579		return 0;1580 1581	/* Initialize default values */1582	switch (wacom->wacom_wac.features.type) {1583	case HID_GENERIC:1584		if (!wacom->generic_has_leds)1585			return 0;1586		wacom->led.llv = 100;1587		wacom->led.max_llv = 100;1588 1589		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);1590		if (error) {1591			hid_err(wacom->hdev,1592				"cannot create leds err: %d\n", error);1593			return error;1594		}1595 1596		error = wacom_devm_sysfs_create_group(wacom,1597						      &generic_led_attr_group);1598		break;1599 1600	case INTUOS4S:1601	case INTUOS4:1602	case INTUOS4WL:1603	case INTUOS4L:1604		wacom->led.llv = 10;1605		wacom->led.hlv = 20;1606		wacom->led.max_llv = 127;1607		wacom->led.max_hlv = 127;1608		wacom->led.img_lum = 10;1609 1610		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);1611		if (error) {1612			hid_err(wacom->hdev,1613				"cannot create leds err: %d\n", error);1614			return error;1615		}1616 1617		error = wacom_devm_sysfs_create_group(wacom,1618						      &intuos4_led_attr_group);1619		break;1620 1621	case WACOM_24HD:1622	case WACOM_21UX2:1623		wacom->led.llv = 0;1624		wacom->led.hlv = 0;1625		wacom->led.img_lum = 0;1626 1627		error = wacom_leds_alloc_and_register(wacom, 2, 4, false);1628		if (error) {1629			hid_err(wacom->hdev,1630				"cannot create leds err: %d\n", error);1631			return error;1632		}1633 1634		error = wacom_devm_sysfs_create_group(wacom,1635						      &cintiq_led_attr_group);1636		break;1637 1638	case INTUOS5S:1639	case INTUOS5:1640	case INTUOS5L:1641	case INTUOSPS:1642	case INTUOSPM:1643	case INTUOSPL:1644		wacom->led.llv = 32;1645		wacom->led.max_llv = 96;1646 1647		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);1648		if (error) {1649			hid_err(wacom->hdev,1650				"cannot create leds err: %d\n", error);1651			return error;1652		}1653 1654		error = wacom_devm_sysfs_create_group(wacom,1655						      &intuos5_led_attr_group);1656		break;1657 1658	case INTUOSP2_BT:1659		wacom->led.llv = 50;1660		wacom->led.max_llv = 100;1661		error = wacom_leds_alloc_and_register(wacom, 1, 4, false);1662		if (error) {1663			hid_err(wacom->hdev,1664				"cannot create leds err: %d\n", error);1665			return error;1666		}1667		return 0;1668 1669	case REMOTE:1670		wacom->led.llv = 255;1671		wacom->led.max_llv = 255;1672		error = wacom_led_groups_allocate(wacom, 5);1673		if (error) {1674			hid_err(wacom->hdev,1675				"cannot create leds err: %d\n", error);1676			return error;1677		}1678		return 0;1679 1680	default:1681		return 0;1682	}1683 1684	if (error) {1685		hid_err(wacom->hdev,1686			"cannot create sysfs group err: %d\n", error);1687		return error;1688	}1689 1690	return 0;1691}1692 1693static void wacom_init_work(struct work_struct *work)1694{1695	struct wacom *wacom = container_of(work, struct wacom, init_work.work);1696 1697	_wacom_query_tablet_data(wacom);1698	wacom_led_control(wacom);1699}1700 1701static void wacom_query_tablet_data(struct wacom *wacom)1702{1703	schedule_delayed_work(&wacom->init_work, msecs_to_jiffies(1000));1704}1705 1706static enum power_supply_property wacom_battery_props[] = {1707	POWER_SUPPLY_PROP_MODEL_NAME,1708	POWER_SUPPLY_PROP_PRESENT,1709	POWER_SUPPLY_PROP_STATUS,1710	POWER_SUPPLY_PROP_SCOPE,1711	POWER_SUPPLY_PROP_CAPACITY1712};1713 1714static int wacom_battery_get_property(struct power_supply *psy,1715				      enum power_supply_property psp,1716				      union power_supply_propval *val)1717{1718	struct wacom_battery *battery = power_supply_get_drvdata(psy);1719	int ret = 0;1720 1721	switch (psp) {1722		case POWER_SUPPLY_PROP_MODEL_NAME:1723			val->strval = battery->wacom->wacom_wac.name;1724			break;1725		case POWER_SUPPLY_PROP_PRESENT:1726			val->intval = battery->bat_connected;1727			break;1728		case POWER_SUPPLY_PROP_SCOPE:1729			val->intval = POWER_SUPPLY_SCOPE_DEVICE;1730			break;1731		case POWER_SUPPLY_PROP_CAPACITY:1732			val->intval = battery->battery_capacity;1733			break;1734		case POWER_SUPPLY_PROP_STATUS:1735			if (battery->bat_status != WACOM_POWER_SUPPLY_STATUS_AUTO)1736				val->intval = battery->bat_status;1737			else if (battery->bat_charging)1738				val->intval = POWER_SUPPLY_STATUS_CHARGING;1739			else if (battery->battery_capacity == 100 &&1740				    battery->ps_connected)1741				val->intval = POWER_SUPPLY_STATUS_FULL;1742			else if (battery->ps_connected)1743				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;1744			else1745				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;1746			break;1747		default:1748			ret = -EINVAL;1749			break;1750	}1751 1752	return ret;1753}1754 1755static int __wacom_initialize_battery(struct wacom *wacom,1756				      struct wacom_battery *battery)1757{1758	static atomic_t battery_no = ATOMIC_INIT(0);1759	struct device *dev = &wacom->hdev->dev;1760	struct power_supply_config psy_cfg = { .drv_data = battery, };1761	struct power_supply *ps_bat;1762	struct power_supply_desc *bat_desc = &battery->bat_desc;1763	unsigned long n;1764	int error;1765 1766	if (!devres_open_group(dev, bat_desc, GFP_KERNEL))1767		return -ENOMEM;1768 1769	battery->wacom = wacom;1770 1771	n = atomic_inc_return(&battery_no) - 1;1772 1773	bat_desc->properties = wacom_battery_props;1774	bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);1775	bat_desc->get_property = wacom_battery_get_property;1776	sprintf(battery->bat_name, "wacom_battery_%ld", n);1777	bat_desc->name = battery->bat_name;1778	bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;1779	bat_desc->use_for_apm = 0;1780 1781	ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);1782	if (IS_ERR(ps_bat)) {1783		error = PTR_ERR(ps_bat);1784		goto err;1785	}1786 1787	power_supply_powers(ps_bat, &wacom->hdev->dev);1788 1789	battery->battery = ps_bat;1790 1791	devres_close_group(dev, bat_desc);1792	return 0;1793 1794err:1795	devres_release_group(dev, bat_desc);1796	return error;1797}1798 1799static int wacom_initialize_battery(struct wacom *wacom)1800{1801	if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY)1802		return __wacom_initialize_battery(wacom, &wacom->battery);1803 1804	return 0;1805}1806 1807static void wacom_destroy_battery(struct wacom *wacom)1808{1809	if (wacom->battery.battery) {1810		devres_release_group(&wacom->hdev->dev,1811				     &wacom->battery.bat_desc);1812		wacom->battery.battery = NULL;1813	}1814}1815 1816static void wacom_aes_battery_handler(struct work_struct *work)1817{1818	struct wacom *wacom = container_of(work, struct wacom, aes_battery_work.work);1819 1820	wacom_destroy_battery(wacom);1821}1822 1823static ssize_t wacom_show_speed(struct device *dev,1824				struct device_attribute1825				*attr, char *buf)1826{1827	struct hid_device *hdev = to_hid_device(dev);1828	struct wacom *wacom = hid_get_drvdata(hdev);1829 1830	return sysfs_emit(buf, "%i\n", wacom->wacom_wac.bt_high_speed);1831}1832 1833static ssize_t wacom_store_speed(struct device *dev,1834				struct device_attribute *attr,1835				const char *buf, size_t count)1836{1837	struct hid_device *hdev = to_hid_device(dev);1838	struct wacom *wacom = hid_get_drvdata(hdev);1839	u8 new_speed;1840 1841	if (kstrtou8(buf, 0, &new_speed))1842		return -EINVAL;1843 1844	if (new_speed != 0 && new_speed != 1)1845		return -EINVAL;1846 1847	wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);1848 1849	return count;1850}1851 1852static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,1853		wacom_show_speed, wacom_store_speed);1854 1855 1856static ssize_t wacom_show_remote_mode(struct kobject *kobj,1857				      struct kobj_attribute *kattr,1858				      char *buf, int index)1859{1860	struct device *dev = kobj_to_dev(kobj->parent);1861	struct hid_device *hdev = to_hid_device(dev);1862	struct wacom *wacom = hid_get_drvdata(hdev);1863	u8 mode;1864 1865	mode = wacom->led.groups[index].select;1866	return sprintf(buf, "%d\n", mode < 3 ? mode : -1);1867}1868 1869#define DEVICE_EKR_ATTR_GROUP(SET_ID)					\1870static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj,	\1871			       struct kobj_attribute *kattr, char *buf)	\1872{									\1873	return wacom_show_remote_mode(kobj, kattr, buf, SET_ID);	\1874}									\1875static struct kobj_attribute remote##SET_ID##_mode_attr = {		\1876	.attr = {.name = "remote_mode",					\1877		.mode = DEV_ATTR_RO_PERM},				\1878	.show = wacom_show_remote##SET_ID##_mode,			\1879};									\1880static struct attribute *remote##SET_ID##_serial_attrs[] = {		\1881	&remote##SET_ID##_mode_attr.attr,				\1882	NULL								\1883};									\1884static const struct attribute_group remote##SET_ID##_serial_group = {	\1885	.name = NULL,							\1886	.attrs = remote##SET_ID##_serial_attrs,				\1887}1888 1889DEVICE_EKR_ATTR_GROUP(0);1890DEVICE_EKR_ATTR_GROUP(1);1891DEVICE_EKR_ATTR_GROUP(2);1892DEVICE_EKR_ATTR_GROUP(3);1893DEVICE_EKR_ATTR_GROUP(4);1894 1895static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,1896					  int index)1897{1898	int error = 0;1899	struct wacom_remote *remote = wacom->remote;1900 1901	remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev,1902							  GFP_KERNEL,1903							  "%d", serial);1904	if (!remote->remotes[index].group.name)1905		return -ENOMEM;1906 1907	error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir,1908						&remote->remotes[index].group);1909	if (error) {1910		remote->remotes[index].group.name = NULL;1911		hid_err(wacom->hdev,1912			"cannot create sysfs group err: %d\n", error);1913		return error;1914	}1915 1916	return 0;1917}1918 1919static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)1920{1921	const size_t buf_size = 2;1922	unsigned char *buf;1923	int retval;1924 1925	buf = kzalloc(buf_size, GFP_KERNEL);1926	if (!buf)1927		return -ENOMEM;1928 1929	buf[0] = WAC_CMD_DELETE_PAIRING;1930	buf[1] = selector;1931 1932	retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,1933				  buf_size, WAC_CMD_RETRIES);1934	kfree(buf);1935 1936	return retval;1937}1938 1939static ssize_t wacom_store_unpair_remote(struct kobject *kobj,1940					 struct kobj_attribute *attr,1941					 const char *buf, size_t count)1942{1943	unsigned char selector = 0;1944	struct device *dev = kobj_to_dev(kobj->parent);1945	struct hid_device *hdev = to_hid_device(dev);1946	struct wacom *wacom = hid_get_drvdata(hdev);1947	int err;1948 1949	if (!strncmp(buf, "*\n", 2)) {1950		selector = WAC_CMD_UNPAIR_ALL;1951	} else {1952		hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",1953			 buf);1954		return -1;1955	}1956 1957	mutex_lock(&wacom->lock);1958 1959	err = wacom_cmd_unpair_remote(wacom, selector);1960	mutex_unlock(&wacom->lock);1961 1962	return err < 0 ? err : count;1963}1964 1965static struct kobj_attribute unpair_remote_attr = {1966	.attr = {.name = "unpair_remote", .mode = 0200},1967	.store = wacom_store_unpair_remote,1968};1969 1970static const struct attribute *remote_unpair_attrs[] = {1971	&unpair_remote_attr.attr,1972	NULL1973};1974 1975static void wacom_remotes_destroy(void *data)1976{1977	struct wacom *wacom = data;1978	struct wacom_remote *remote = wacom->remote;1979 1980	if (!remote)1981		return;1982 1983	kobject_put(remote->remote_dir);1984	kfifo_free(&remote->remote_fifo);1985	wacom->remote = NULL;1986}1987 1988static int wacom_initialize_remotes(struct wacom *wacom)1989{1990	int error = 0;1991	struct wacom_remote *remote;1992	int i;1993 1994	if (wacom->wacom_wac.features.type != REMOTE)1995		return 0;1996 1997	remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote),1998			      GFP_KERNEL);1999	if (!remote)2000		return -ENOMEM;2001 2002	wacom->remote = remote;2003 2004	spin_lock_init(&remote->remote_lock);2005 2006	error = kfifo_alloc(&remote->remote_fifo,2007			5 * sizeof(struct wacom_remote_work_data),2008			GFP_KERNEL);2009	if (error) {2010		hid_err(wacom->hdev, "failed allocating remote_fifo\n");2011		return -ENOMEM;2012	}2013 2014	remote->remotes[0].group = remote0_serial_group;2015	remote->remotes[1].group = remote1_serial_group;2016	remote->remotes[2].group = remote2_serial_group;2017	remote->remotes[3].group = remote3_serial_group;2018	remote->remotes[4].group = remote4_serial_group;2019 2020	remote->remote_dir = kobject_create_and_add("wacom_remote",2021						    &wacom->hdev->dev.kobj);2022	if (!remote->remote_dir)2023		return -ENOMEM;2024 2025	error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);2026 2027	if (error) {2028		hid_err(wacom->hdev,2029			"cannot create sysfs group err: %d\n", error);2030		return error;2031	}2032 2033	for (i = 0; i < WACOM_MAX_REMOTES; i++) {2034		wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;2035		remote->remotes[i].serial = 0;2036	}2037 2038	error = devm_add_action_or_reset(&wacom->hdev->dev,2039					 wacom_remotes_destroy, wacom);2040	if (error)2041		return error;2042 2043	return 0;2044}2045 2046static struct input_dev *wacom_allocate_input(struct wacom *wacom)2047{2048	struct input_dev *input_dev;2049	struct hid_device *hdev = wacom->hdev;2050	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);2051 2052	input_dev = devm_input_allocate_device(&hdev->dev);2053	if (!input_dev)2054		return NULL;2055 2056	input_dev->name = wacom_wac->features.name;2057	input_dev->phys = hdev->phys;2058	input_dev->dev.parent = &hdev->dev;2059	input_dev->open = wacom_open;2060	input_dev->close = wacom_close;2061	input_dev->uniq = hdev->uniq;2062	input_dev->id.bustype = hdev->bus;2063	input_dev->id.vendor  = hdev->vendor;2064	input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;2065	input_dev->id.version = hdev->version;2066	input_set_drvdata(input_dev, wacom);2067 2068	return input_dev;2069}2070 2071static int wacom_allocate_inputs(struct wacom *wacom)2072{2073	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);2074 2075	wacom_wac->pen_input = wacom_allocate_input(wacom);2076	wacom_wac->touch_input = wacom_allocate_input(wacom);2077	wacom_wac->pad_input = wacom_allocate_input(wacom);2078	if (!wacom_wac->pen_input ||2079	    !wacom_wac->touch_input ||2080	    !wacom_wac->pad_input)2081		return -ENOMEM;2082 2083	wacom_wac->pen_input->name = wacom_wac->pen_name;2084	wacom_wac->touch_input->name = wacom_wac->touch_name;2085	wacom_wac->pad_input->name = wacom_wac->pad_name;2086 2087	return 0;2088}2089 2090static int wacom_setup_inputs(struct wacom *wacom)2091{2092	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;2093	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);2094	int error = 0;2095 2096	pen_input_dev = wacom_wac->pen_input;2097	touch_input_dev = wacom_wac->touch_input;2098	pad_input_dev = wacom_wac->pad_input;2099 2100	if (!pen_input_dev || !touch_input_dev || !pad_input_dev)2101		return -EINVAL;2102 2103	error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);2104	if (error) {2105		/* no pen in use on this interface */2106		input_free_device(pen_input_dev);2107		wacom_wac->pen_input = NULL;2108		pen_input_dev = NULL;2109	}2110 2111	error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);2112	if (error) {2113		/* no touch in use on this interface */2114		input_free_device(touch_input_dev);2115		wacom_wac->touch_input = NULL;2116		touch_input_dev = NULL;2117	}2118 2119	error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);2120	if (error) {2121		/* no pad events using this interface */2122		input_free_device(pad_input_dev);2123		wacom_wac->pad_input = NULL;2124		pad_input_dev = NULL;2125	}2126 2127	return 0;2128}2129 2130static int wacom_register_inputs(struct wacom *wacom)2131{2132	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;2133	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);2134	int error = 0;2135 2136	pen_input_dev = wacom_wac->pen_input;2137	touch_input_dev = wacom_wac->touch_input;2138	pad_input_dev = wacom_wac->pad_input;2139 2140	if (pen_input_dev) {2141		error = input_register_device(pen_input_dev);2142		if (error)2143			goto fail;2144	}2145 2146	if (touch_input_dev) {2147		error = input_register_device(touch_input_dev);2148		if (error)2149			goto fail;2150	}2151 2152	if (pad_input_dev) {2153		error = input_register_device(pad_input_dev);2154		if (error)2155			goto fail;2156	}2157 2158	return 0;2159 2160fail:2161	wacom_wac->pad_input = NULL;2162	wacom_wac->touch_input = NULL;2163	wacom_wac->pen_input = NULL;2164	return error;2165}2166 2167/*2168 * Not all devices report physical dimensions from HID.2169 * Compute the default from hardcoded logical dimension2170 * and resolution before driver overwrites them.2171 */2172static void wacom_set_default_phy(struct wacom_features *features)2173{2174	if (features->x_resolution) {2175		features->x_phy = (features->x_max * 100) /2176					features->x_resolution;2177		features->y_phy = (features->y_max * 100) /2178					features->y_resolution;2179	}2180}2181 2182static void wacom_calculate_res(struct wacom_features *features)2183{2184	/* set unit to "100th of a mm" for devices not reported by HID */2185	if (!features->unit) {2186		features->unit = 0x11;2187		features->unitExpo = -3;2188	}2189 2190	features->x_resolution = wacom_calc_hid_res(features->x_max,2191						    features->x_phy,2192						    features->unit,2193						    features->unitExpo);2194	features->y_resolution = wacom_calc_hid_res(features->y_max,2195						    features->y_phy,2196						    features->unit,2197						    features->unitExpo);2198}2199 2200void wacom_battery_work(struct work_struct *work)2201{2202	struct wacom *wacom = container_of(work, struct wacom, battery_work);2203 2204	if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&2205	     !wacom->battery.battery) {2206		wacom_initialize_battery(wacom);2207	}2208	else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&2209		 wacom->battery.battery) {2210		wacom_destroy_battery(wacom);2211	}2212}2213 2214static size_t wacom_compute_pktlen(struct hid_device *hdev)2215{2216	struct hid_report_enum *report_enum;2217	struct hid_report *report;2218	size_t size = 0;2219 2220	report_enum = hdev->report_enum + HID_INPUT_REPORT;2221 2222	list_for_each_entry(report, &report_enum->report_list, list) {2223		size_t report_size = hid_report_len(report);2224		if (report_size > size)2225			size = report_size;2226	}2227 2228	return size;2229}2230 2231static void wacom_update_name(struct wacom *wacom, const char *suffix)2232{2233	struct wacom_wac *wacom_wac = &wacom->wacom_wac;2234	struct wacom_features *features = &wacom_wac->features;2235	char name[WACOM_NAME_MAX - 20]; /* Leave some room for suffixes */2236 2237	/* Generic devices name unspecified */2238	if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {2239		char *product_name = wacom->hdev->name;2240 2241		if (hid_is_usb(wacom->hdev)) {2242			struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent);2243			struct usb_device *dev = interface_to_usbdev(intf);2244			product_name = dev->product;2245		}2246 2247		if (wacom->hdev->bus == BUS_I2C) {2248			snprintf(name, sizeof(name), "%s %X",2249				 features->name, wacom->hdev->product);2250		} else if (strstr(product_name, "Wacom") ||2251			   strstr(product_name, "wacom") ||2252			   strstr(product_name, "WACOM")) {2253			if (strscpy(name, product_name, sizeof(name)) < 0) {2254				hid_warn(wacom->hdev, "String overflow while assembling device name");2255			}2256		} else {2257			snprintf(name, sizeof(name), "Wacom %s", product_name);2258		}2259 2260		/* strip out excess whitespaces */2261		while (1) {2262			char *gap = strstr(name, "  ");2263			if (gap == NULL)2264				break;2265			/* shift everything including the terminator */2266			memmove(gap, gap+1, strlen(gap));2267		}2268 2269		/* get rid of trailing whitespace */2270		if (name[strlen(name)-1] == ' ')2271			name[strlen(name)-1] = '\0';2272	} else {2273		if (strscpy(name, features->name, sizeof(name)) < 0) {2274			hid_warn(wacom->hdev, "String overflow while assembling device name");2275		}2276	}2277 2278	snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",2279		 name, suffix);2280 2281	/* Append the device type to the name */2282	snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),2283		"%s%s Pen", name, suffix);2284	snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),2285		"%s%s Finger", name, suffix);2286	snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),2287		"%s%s Pad", name, suffix);2288}2289 2290static void wacom_release_resources(struct wacom *wacom)2291{2292	struct hid_device *hdev = wacom->hdev;2293 2294	if (!wacom->resources)2295		return;2296 2297	devres_release_group(&hdev->dev, wacom);2298 2299	wacom->resources = false;2300 2301	wacom->wacom_wac.pen_input = NULL;2302	wacom->wacom_wac.touch_input = NULL;2303	wacom->wacom_wac.pad_input = NULL;2304}2305 2306static void wacom_set_shared_values(struct wacom_wac *wacom_wac)2307{2308	if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) {2309		wacom_wac->shared->type = wacom_wac->features.type;2310		wacom_wac->shared->touch_input = wacom_wac->touch_input;2311	}2312 2313	if (wacom_wac->has_mute_touch_switch) {2314		wacom_wac->shared->has_mute_touch_switch = true;2315		/* Hardware touch switch may be off. Wait until2316		 * we know the switch state to decide is_touch_on.2317		 * Softkey state should be initialized to "on" to2318		 * match historic default.2319		 */2320		if (wacom_wac->is_soft_touch_switch)2321			wacom_wac->shared->is_touch_on = true;2322	}2323 2324	if (wacom_wac->shared->has_mute_touch_switch &&2325	    wacom_wac->shared->touch_input) {2326		set_bit(EV_SW, wacom_wac->shared->touch_input->evbit);2327		input_set_capability(wacom_wac->shared->touch_input, EV_SW,2328				     SW_MUTE_DEVICE);2329	}2330}2331 2332static int wacom_parse_and_register(struct wacom *wacom, bool wireless)2333{2334	struct wacom_wac *wacom_wac = &wacom->wacom_wac;2335	struct wacom_features *features = &wacom_wac->features;2336	struct hid_device *hdev = wacom->hdev;2337	int error;2338	unsigned int connect_mask = HID_CONNECT_HIDRAW;2339 2340	features->pktlen = wacom_compute_pktlen(hdev);2341	if (features->pktlen > WACOM_PKGLEN_MAX)2342		return -EINVAL;2343 2344	if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))2345		return -ENOMEM;2346 2347	wacom->resources = true;2348 2349	error = wacom_allocate_inputs(wacom);2350	if (error)2351		goto fail;2352 2353	/*2354	 * Bamboo Pad has a generic hid handling for the Pen, and we switch it2355	 * into debug mode for the touch part.2356	 * We ignore the other interfaces.2357	 */2358	if (features->type == BAMBOO_PAD) {2359		if (features->pktlen == WACOM_PKGLEN_PENABLED) {2360			features->type = HID_GENERIC;2361		} else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&2362			   (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {2363			error = -ENODEV;2364			goto fail;2365		}2366	}2367 2368	/* set the default size in case we do not get them from hid */2369	wacom_set_default_phy(features);2370 2371	/* Retrieve the physical and logical size for touch devices */2372	wacom_retrieve_hid_descriptor(hdev, features);2373	wacom_setup_device_quirks(wacom);2374 2375	if (features->device_type == WACOM_DEVICETYPE_NONE &&2376	    features->type != WIRELESS) {2377		error = features->type == HID_GENERIC ? -ENODEV : 0;2378 2379		dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",2380			 hdev->name,2381			 error ? "Ignoring" : "Assuming pen");2382 2383		if (error)2384			goto fail;2385 2386		features->device_type |= WACOM_DEVICETYPE_PEN;2387	}2388 2389	wacom_calculate_res(features);2390 2391	wacom_update_name(wacom, wireless ? " (WL)" : "");2392 2393	/* pen only Bamboo neither support touch nor pad */2394	if ((features->type == BAMBOO_PEN) &&2395	    ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||2396	    (features->device_type & WACOM_DEVICETYPE_PAD))) {2397		error = -ENODEV;2398		goto fail;2399	}2400 2401	error = wacom_add_shared_data(hdev);2402	if (error)2403		goto fail;2404 2405	error = wacom_setup_inputs(wacom);2406	if (error)2407		goto fail;2408 2409	if (features->type == HID_GENERIC)2410		connect_mask |= HID_CONNECT_DRIVER;2411 2412	/* Regular HID work starts now */2413	error = hid_hw_start(hdev, connect_mask);2414	if (error) {2415		hid_err(hdev, "hw start failed\n");2416		goto fail;2417	}2418 2419	error = wacom_register_inputs(wacom);2420	if (error)2421		goto fail;2422 2423	if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {2424		error = wacom_initialize_leds(wacom);2425		if (error)2426			goto fail;2427 2428		error = wacom_initialize_remotes(wacom);2429		if (error)2430			goto fail;2431	}2432 2433	if (!wireless) {2434		/* Note that if query fails it is not a hard failure */2435		wacom_query_tablet_data(wacom);2436	}2437 2438	/* touch only Bamboo doesn't support pen */2439	if ((features->type == BAMBOO_TOUCH) &&2440	    (features->device_type & WACOM_DEVICETYPE_PEN)) {2441		cancel_delayed_work_sync(&wacom->init_work);2442		_wacom_query_tablet_data(wacom);2443		error = -ENODEV;2444		goto fail_quirks;2445	}2446 2447	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) {2448		error = hid_hw_open(hdev);2449		if (error) {2450			hid_err(hdev, "hw open failed\n");2451			goto fail_quirks;2452		}2453	}2454 2455	wacom_set_shared_values(wacom_wac);2456	devres_close_group(&hdev->dev, wacom);2457 2458	return 0;2459 2460fail_quirks:2461	hid_hw_stop(hdev);2462fail:2463	wacom_release_resources(wacom);2464	return error;2465}2466 2467static void wacom_wireless_work(struct work_struct *work)2468{2469	struct wacom *wacom = container_of(work, struct wacom, wireless_work);2470	struct usb_device *usbdev = wacom->usbdev;2471	struct wacom_wac *wacom_wac = &wacom->wacom_wac;2472	struct hid_device *hdev1, *hdev2;2473	struct wacom *wacom1, *wacom2;2474	struct wacom_wac *wacom_wac1, *wacom_wac2;2475	int error;2476 2477	/*2478	 * Regardless if this is a disconnect or a new tablet,2479	 * remove any existing input and battery devices.2480	 */2481 2482	wacom_destroy_battery(wacom);2483 2484	if (!usbdev)2485		return;2486 2487	/* Stylus interface */2488	hdev1 = usb_get_intfdata(usbdev->config->interface[1]);2489	wacom1 = hid_get_drvdata(hdev1);2490	wacom_wac1 = &(wacom1->wacom_wac);2491	wacom_release_resources(wacom1);2492 2493	/* Touch interface */2494	hdev2 = usb_get_intfdata(usbdev->config->interface[2]);2495	wacom2 = hid_get_drvdata(hdev2);2496	wacom_wac2 = &(wacom2->wacom_wac);2497	wacom_release_resources(wacom2);2498 2499	if (wacom_wac->pid == 0) {2500		hid_info(wacom->hdev, "wireless tablet disconnected\n");2501	} else {2502		const struct hid_device_id *id = wacom_ids;2503 2504		hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",2505			 wacom_wac->pid);2506 2507		while (id->bus) {2508			if (id->vendor == USB_VENDOR_ID_WACOM &&2509			    id->product == wacom_wac->pid)2510				break;2511			id++;2512		}2513 2514		if (!id->bus) {2515			hid_info(wacom->hdev, "ignoring unknown PID.\n");2516			return;2517		}2518 2519		/* Stylus interface */2520		wacom_wac1->features =2521			*((struct wacom_features *)id->driver_data);2522 2523		wacom_wac1->pid = wacom_wac->pid;2524		hid_hw_stop(hdev1);2525		error = wacom_parse_and_register(wacom1, true);2526		if (error)2527			goto fail;2528 2529		/* Touch interface */2530		if (wacom_wac1->features.touch_max ||2531		    (wacom_wac1->features.type >= INTUOSHT &&2532		    wacom_wac1->features.type <= BAMBOO_PT)) {2533			wacom_wac2->features =2534				*((struct wacom_features *)id->driver_data);2535			wacom_wac2->pid = wacom_wac->pid;2536			hid_hw_stop(hdev2);2537			error = wacom_parse_and_register(wacom2, true);2538			if (error)2539				goto fail;2540		}2541 2542		if (strscpy(wacom_wac->name, wacom_wac1->name,2543			sizeof(wacom_wac->name)) < 0) {2544			hid_warn(wacom->hdev, "String overflow while assembling device name");2545		}2546	}2547 2548	return;2549 2550fail:2551	wacom_release_resources(wacom1);2552	wacom_release_resources(wacom2);2553	return;2554}2555 2556static void wacom_remote_destroy_battery(struct wacom *wacom, int index)2557{2558	struct wacom_remote *remote = wacom->remote;2559 2560	if (remote->remotes[index].battery.battery) {2561		devres_release_group(&wacom->hdev->dev,2562				     &remote->remotes[index].battery.bat_desc);2563		remote->remotes[index].battery.battery = NULL;2564		remote->remotes[index].active_time = 0;2565	}2566}2567 2568static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)2569{2570	struct wacom_remote *remote = wacom->remote;2571	u32 serial = remote->remotes[index].serial;2572	int i;2573	unsigned long flags;2574 2575	for (i = 0; i < WACOM_MAX_REMOTES; i++) {2576		if (remote->remotes[i].serial == serial) {2577 2578			spin_lock_irqsave(&remote->remote_lock, flags);2579			remote->remotes[i].registered = false;2580			spin_unlock_irqrestore(&remote->remote_lock, flags);2581 2582			wacom_remote_destroy_battery(wacom, i);2583 2584			if (remote->remotes[i].group.name)2585				devres_release_group(&wacom->hdev->dev,2586						     &remote->remotes[i]);2587 2588			remote->remotes[i].serial = 0;2589			remote->remotes[i].group.name = NULL;2590			wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;2591		}2592	}2593}2594 2595static int wacom_remote_create_one(struct wacom *wacom, u32 serial,2596				   unsigned int index)2597{2598	struct wacom_remote *remote = wacom->remote;2599	struct device *dev = &wacom->hdev->dev;2600	int error, k;2601 2602	/* A remote can pair more than once with an EKR,2603	 * check to make sure this serial isn't already paired.2604	 */2605	for (k = 0; k < WACOM_MAX_REMOTES; k++) {2606		if (remote->remotes[k].serial == serial)2607			break;2608	}2609 2610	if (k < WACOM_MAX_REMOTES) {2611		remote->remotes[index].serial = serial;2612		return 0;2613	}2614 2615	if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL))2616		return -ENOMEM;2617 2618	error = wacom_remote_create_attr_group(wacom, serial, index);2619	if (error)2620		goto fail;2621 2622	remote->remotes[index].input = wacom_allocate_input(wacom);2623	if (!remote->remotes[index].input) {2624		error = -ENOMEM;2625		goto fail;2626	}2627	remote->remotes[index].input->uniq = remote->remotes[index].group.name;2628	remote->remotes[index].input->name = wacom->wacom_wac.pad_name;2629 2630	if (!remote->remotes[index].input->name) {2631		error = -EINVAL;2632		goto fail;2633	}2634 2635	error = wacom_setup_pad_input_capabilities(remote->remotes[index].input,2636						   &wacom->wacom_wac);2637	if (error)2638		goto fail;2639 2640	remote->remotes[index].serial = serial;2641 2642	error = input_register_device(remote->remotes[index].input);2643	if (error)2644		goto fail;2645 2646	error = wacom_led_groups_alloc_and_register_one(2647					&remote->remotes[index].input->dev,2648					wacom, index, 3, true);2649	if (error)2650		goto fail;2651 2652	remote->remotes[index].registered = true;2653 2654	devres_close_group(dev, &remote->remotes[index]);2655	return 0;2656 2657fail:2658	devres_release_group(dev, &remote->remotes[index]);2659	remote->remotes[index].serial = 0;2660	return error;2661}2662 2663static int wacom_remote_attach_battery(struct wacom *wacom, int index)2664{2665	struct wacom_remote *remote = wacom->remote;2666	int error;2667 2668	if (!remote->remotes[index].registered)2669		return 0;2670 2671	if (remote->remotes[index].battery.battery)2672		return 0;2673 2674	if (!remote->remotes[index].active_time)2675		return 0;2676 2677	if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)2678		return 0;2679 2680	error = __wacom_initialize_battery(wacom,2681					&wacom->remote->remotes[index].battery);2682	if (error)2683		return error;2684 2685	return 0;2686}2687 2688static void wacom_remote_work(struct work_struct *work)2689{2690	struct wacom *wacom = container_of(work, struct wacom, remote_work);2691	struct wacom_remote *remote = wacom->remote;2692	ktime_t kt = ktime_get();2693	struct wacom_remote_work_data remote_work_data;2694	unsigned long flags;2695	unsigned int count;2696	u32 work_serial;2697	int i;2698 2699	spin_lock_irqsave(&remote->remote_lock, flags);2700 2701	count = kfifo_out(&remote->remote_fifo, &remote_work_data,2702			  sizeof(remote_work_data));2703 2704	if (count != sizeof(remote_work_data)) {2705		hid_err(wacom->hdev,2706			"workitem triggered without status available\n");2707		spin_unlock_irqrestore(&remote->remote_lock, flags);2708		return;2709	}2710 2711	if (!kfifo_is_empty(&remote->remote_fifo))2712		wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE);2713 2714	spin_unlock_irqrestore(&remote->remote_lock, flags);2715 2716	for (i = 0; i < WACOM_MAX_REMOTES; i++) {2717		work_serial = remote_work_data.remote[i].serial;2718		if (work_serial) {2719 2720			if (kt - remote->remotes[i].active_time > WACOM_REMOTE_BATTERY_TIMEOUT2721			    && remote->remotes[i].active_time != 0)2722				wacom_remote_destroy_battery(wacom, i);2723 2724			if (remote->remotes[i].serial == work_serial) {2725				wacom_remote_attach_battery(wacom, i);2726				continue;2727			}2728 2729			if (remote->remotes[i].serial)2730				wacom_remote_destroy_one(wacom, i);2731 2732			wacom_remote_create_one(wacom, work_serial, i);2733 2734		} else if (remote->remotes[i].serial) {2735			wacom_remote_destroy_one(wacom, i);2736		}2737	}2738}2739 2740static void wacom_mode_change_work(struct work_struct *work)2741{2742	struct wacom *wacom = container_of(work, struct wacom, mode_change_work);2743	struct wacom_shared *shared = wacom->wacom_wac.shared;2744	struct wacom *wacom1 = NULL;2745	struct wacom *wacom2 = NULL;2746	bool is_direct = wacom->wacom_wac.is_direct_mode;2747	int error = 0;2748 2749	if (shared->pen) {2750		wacom1 = hid_get_drvdata(shared->pen);2751		wacom_release_resources(wacom1);2752		hid_hw_stop(wacom1->hdev);2753		wacom1->wacom_wac.has_mode_change = true;2754		wacom1->wacom_wac.is_direct_mode = is_direct;2755	}2756 2757	if (shared->touch) {2758		wacom2 = hid_get_drvdata(shared->touch);2759		wacom_release_resources(wacom2);2760		hid_hw_stop(wacom2->hdev);2761		wacom2->wacom_wac.has_mode_change = true;2762		wacom2->wacom_wac.is_direct_mode = is_direct;2763	}2764 2765	if (wacom1) {2766		error = wacom_parse_and_register(wacom1, false);2767		if (error)2768			return;2769	}2770 2771	if (wacom2) {2772		error = wacom_parse_and_register(wacom2, false);2773		if (error)2774			return;2775	}2776 2777	return;2778}2779 2780static int wacom_probe(struct hid_device *hdev,2781		const struct hid_device_id *id)2782{2783	struct wacom *wacom;2784	struct wacom_wac *wacom_wac;2785	struct wacom_features *features;2786	int error;2787 2788	if (!id->driver_data)2789		return -EINVAL;2790 2791	hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;2792 2793	/* hid-core sets this quirk for the boot interface */2794	hdev->quirks &= ~HID_QUIRK_NOGET;2795 2796	wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);2797	if (!wacom)2798		return -ENOMEM;2799 2800	hid_set_drvdata(hdev, wacom);2801	wacom->hdev = hdev;2802 2803	wacom_wac = &wacom->wacom_wac;2804	wacom_wac->features = *((struct wacom_features *)id->driver_data);2805	features = &wacom_wac->features;2806 2807	if (features->check_for_hid_type && features->hid_type != hdev->type)2808		return -ENODEV;2809 2810	error = wacom_devm_kfifo_alloc(wacom);2811	if (error)2812		return error;2813 2814	wacom_wac->hid_data.inputmode = -1;2815	wacom_wac->mode_report = -1;2816 2817	if (hid_is_usb(hdev)) {2818		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);2819		struct usb_device *dev = interface_to_usbdev(intf);2820 2821		wacom->usbdev = dev;2822		wacom->intf = intf;2823	}2824 2825	mutex_init(&wacom->lock);2826	INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work);2827	INIT_DELAYED_WORK(&wacom->aes_battery_work, wacom_aes_battery_handler);2828	INIT_WORK(&wacom->wireless_work, wacom_wireless_work);2829	INIT_WORK(&wacom->battery_work, wacom_battery_work);2830	INIT_WORK(&wacom->remote_work, wacom_remote_work);2831	INIT_WORK(&wacom->mode_change_work, wacom_mode_change_work);2832	timer_setup(&wacom->idleprox_timer, &wacom_idleprox_timeout, TIMER_DEFERRABLE);2833 2834	/* ask for the report descriptor to be loaded by HID */2835	error = hid_parse(hdev);2836	if (error) {2837		hid_err(hdev, "parse failed\n");2838		return error;2839	}2840 2841	if (features->type == BOOTLOADER) {2842		hid_warn(hdev, "Using device in hidraw-only mode");2843		return hid_hw_start(hdev, HID_CONNECT_HIDRAW);2844	}2845 2846	error = wacom_parse_and_register(wacom, false);2847	if (error)2848		return error;2849 2850	if (hdev->bus == BUS_BLUETOOTH) {2851		error = device_create_file(&hdev->dev, &dev_attr_speed);2852		if (error)2853			hid_warn(hdev,2854				 "can't create sysfs speed attribute err: %d\n",2855				 error);2856	}2857 2858	wacom_wac->probe_complete = true;2859	return 0;2860}2861 2862static void wacom_remove(struct hid_device *hdev)2863{2864	struct wacom *wacom = hid_get_drvdata(hdev);2865	struct wacom_wac *wacom_wac = &wacom->wacom_wac;2866	struct wacom_features *features = &wacom_wac->features;2867 2868	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)2869		hid_hw_close(hdev);2870 2871	hid_hw_stop(hdev);2872 2873	cancel_delayed_work_sync(&wacom->init_work);2874	cancel_work_sync(&wacom->wireless_work);2875	cancel_work_sync(&wacom->battery_work);2876	cancel_work_sync(&wacom->remote_work);2877	cancel_work_sync(&wacom->mode_change_work);2878	del_timer_sync(&wacom->idleprox_timer);2879	if (hdev->bus == BUS_BLUETOOTH)2880		device_remove_file(&hdev->dev, &dev_attr_speed);2881 2882	/* make sure we don't trigger the LEDs */2883	wacom_led_groups_release(wacom);2884 2885	if (wacom->wacom_wac.features.type != REMOTE)2886		wacom_release_resources(wacom);2887}2888 2889#ifdef CONFIG_PM2890static int wacom_resume(struct hid_device *hdev)2891{2892	struct wacom *wacom = hid_get_drvdata(hdev);2893 2894	mutex_lock(&wacom->lock);2895 2896	/* switch to wacom mode first */2897	_wacom_query_tablet_data(wacom);2898	wacom_led_control(wacom);2899 2900	mutex_unlock(&wacom->lock);2901 2902	return 0;2903}2904 2905static int wacom_reset_resume(struct hid_device *hdev)2906{2907	return wacom_resume(hdev);2908}2909#endif /* CONFIG_PM */2910 2911static struct hid_driver wacom_driver = {2912	.name =		"wacom",2913	.id_table =	wacom_ids,2914	.probe =	wacom_probe,2915	.remove =	wacom_remove,2916	.report =	wacom_wac_report,2917#ifdef CONFIG_PM2918	.resume =	wacom_resume,2919	.reset_resume =	wacom_reset_resume,2920#endif2921	.raw_event =	wacom_raw_event,2922};2923module_hid_driver(wacom_driver);2924 2925MODULE_VERSION(DRIVER_VERSION);2926MODULE_AUTHOR(DRIVER_AUTHOR);2927MODULE_DESCRIPTION(DRIVER_DESC);2928MODULE_LICENSE("GPL");2929