wacom_sys.c 49.4 KB
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/*
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 * drivers/input/tablet/wacom_sys.c
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 *
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 *  USB Wacom tablet support - system specific code
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 */

/*
 * 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 "wacom_wac.h"
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#include "wacom.h"
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#include <linux/input/mt.h>
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#define WAC_MSG_RETRIES		5
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#define WAC_CMD_WL_LED_CONTROL	0x03
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#define WAC_CMD_LED_CONTROL	0x20
#define WAC_CMD_ICON_START	0x21
#define WAC_CMD_ICON_XFER	0x23
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#define WAC_CMD_ICON_BT_XFER	0x26
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#define WAC_CMD_RETRIES		10
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#define WAC_CMD_DELETE_PAIRING	0x20
#define WAC_CMD_UNPAIR_ALL	0xFF
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#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
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#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
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static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
			    size_t size, unsigned int retries)
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{
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	int retval;

	do {
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		retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
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				HID_REQ_GET_REPORT);
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	} while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);

	if (retval < 0)
		hid_err(hdev, "wacom_get_report: ran out of retries "
			"(last error = %d)\n", retval);
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	return retval;
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}

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static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
			    size_t size, unsigned int retries)
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{
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	int retval;

	do {
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		retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
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				HID_REQ_SET_REPORT);
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	} while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries);

	if (retval < 0)
		hid_err(hdev, "wacom_set_report: ran out of retries "
			"(last error = %d)\n", retval);
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	return retval;
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}

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static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
		u8 *raw_data, int size)
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{
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	struct wacom *wacom = hid_get_drvdata(hdev);
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	if (size > WACOM_PKGLEN_MAX)
		return 1;
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	memcpy(wacom->wacom_wac.data, raw_data, size);
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	wacom_wac_irq(&wacom->wacom_wac, size);

	return 0;
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}

static int wacom_open(struct input_dev *dev)
{
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	struct wacom *wacom = input_get_drvdata(dev);
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	return hid_hw_open(wacom->hdev);
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}

static void wacom_close(struct input_dev *dev)
{
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	struct wacom *wacom = input_get_drvdata(dev);
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	/*
	 * wacom->hdev should never be null, but surprisingly, I had the case
	 * once while unplugging the Wacom Wireless Receiver.
	 */
	if (wacom->hdev)
		hid_hw_close(wacom->hdev);
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}

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/*
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 * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
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 */
static int wacom_calc_hid_res(int logical_extents, int physical_extents,
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			       unsigned unit, int exponent)
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{
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	struct hid_field field = {
		.logical_maximum = logical_extents,
		.physical_maximum = physical_extents,
		.unit = unit,
		.unit_exponent = exponent,
	};

	return hidinput_calc_abs_res(&field, ABS_X);
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}

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static void wacom_feature_mapping(struct hid_device *hdev,
		struct hid_field *field, struct hid_usage *usage)
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{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	struct wacom_features *features = &wacom->wacom_wac.features;
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	struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
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	u8 *data;
	int ret;
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	switch (usage->hid) {
	case HID_DG_CONTACTMAX:
		/* leave touch_max as is if predefined */
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		if (!features->touch_max) {
			/* read manually */
			data = kzalloc(2, GFP_KERNEL);
			if (!data)
				break;
			data[0] = field->report->id;
			ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
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						data, 2, WAC_CMD_RETRIES);
			if (ret == 2) {
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				features->touch_max = data[1];
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			} else {
				features->touch_max = 16;
				hid_warn(hdev, "wacom_feature_mapping: "
					 "could not get HID_DG_CONTACTMAX, "
					 "defaulting to %d\n",
					  features->touch_max);
			}
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			kfree(data);
		}
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		break;
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	case HID_DG_INPUTMODE:
		/* Ignore if value index is out of bounds. */
		if (usage->usage_index >= field->report_count) {
			dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
			break;
		}

		hid_data->inputmode = field->report->id;
		hid_data->inputmode_index = usage->usage_index;
		break;
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	case HID_UP_DIGITIZER:
		if (field->report->id == 0x0B &&
		    (field->application == WACOM_G9_DIGITIZER ||
		     field->application == WACOM_G11_DIGITIZER)) {
			wacom->wacom_wac.mode_report = field->report->id;
			wacom->wacom_wac.mode_value = 0;
		}
		break;

	case WACOM_G9_PAGE:
	case WACOM_G11_PAGE:
		if (field->report->id == 0x03 &&
		    (field->application == WACOM_G9_TOUCHSCREEN ||
		     field->application == WACOM_G11_TOUCHSCREEN)) {
			wacom->wacom_wac.mode_report = field->report->id;
			wacom->wacom_wac.mode_value = 0;
		}
		break;
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	}
}

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/*
 * Interface Descriptor of wacom devices can be incomplete and
 * inconsistent so wacom_features table is used to store stylus
 * device's packet lengths, various maximum values, and tablet
 * resolution based on product ID's.
 *
 * For devices that contain 2 interfaces, wacom_features table is
 * inaccurate for the touch interface.  Since the Interface Descriptor
 * for touch interfaces has pretty complete data, this function exists
 * to query tablet for this missing information instead of hard coding in
 * an additional table.
 *
 * A typical Interface Descriptor for a stylus will contain a
 * boot mouse application collection that is not of interest and this
 * function will ignore it.
 *
 * It also contains a digitizer application collection that also is not
 * of interest since any information it contains would be duplicate
 * of what is in wacom_features. Usually it defines a report of an array
 * of bytes that could be used as max length of the stylus packet returned.
 * If it happens to define a Digitizer-Stylus Physical Collection then
 * the X and Y logical values contain valid data but it is ignored.
 *
 * A typical Interface Descriptor for a touch interface will contain a
 * Digitizer-Finger Physical Collection which will define both logical
 * X/Y maximum as well as the physical size of tablet. Since touch
 * interfaces haven't supported pressure or distance, this is enough
 * information to override invalid values in the wacom_features table.
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 *
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 * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
 * data. We deal with them after returning from this function.
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 */
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static void wacom_usage_mapping(struct hid_device *hdev,
		struct hid_field *field, struct hid_usage *usage)
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{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	struct wacom_features *features = &wacom->wacom_wac.features;
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	bool finger = WACOM_FINGER_FIELD(field);
	bool pen = WACOM_PEN_FIELD(field);
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	/*
	* Requiring Stylus Usage will ignore boot mouse
	* X/Y values and some cases of invalid Digitizer X/Y
	* values commonly reported.
	*/
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	if (pen)
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		features->device_type |= WACOM_DEVICETYPE_PEN;
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	else if (finger)
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		features->device_type |= WACOM_DEVICETYPE_TOUCH;
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	else
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		return;

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	/*
	 * Bamboo models do not support HID_DG_CONTACTMAX.
	 * And, Bamboo Pen only descriptor contains touch.
	 */
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	if (features->type > BAMBOO_PT) {
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		/* ISDv4 touch devices at least supports one touch point */
		if (finger && !features->touch_max)
			features->touch_max = 1;
	}
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	switch (usage->hid) {
	case HID_GD_X:
		features->x_max = field->logical_maximum;
		if (finger) {
			features->x_phy = field->physical_maximum;
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			if ((features->type != BAMBOO_PT) &&
			    (features->type != BAMBOO_TOUCH)) {
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				features->unit = field->unit;
				features->unitExpo = field->unit_exponent;
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			}
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		}
		break;
	case HID_GD_Y:
		features->y_max = field->logical_maximum;
		if (finger) {
			features->y_phy = field->physical_maximum;
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			if ((features->type != BAMBOO_PT) &&
			    (features->type != BAMBOO_TOUCH)) {
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				features->unit = field->unit;
				features->unitExpo = field->unit_exponent;
			}
		}
		break;
	case HID_DG_TIPPRESSURE:
		if (pen)
			features->pressure_max = field->logical_maximum;
		break;
	}
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	if (features->type == HID_GENERIC)
		wacom_wac_usage_mapping(hdev, field, usage);
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}
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static void wacom_post_parse_hid(struct hid_device *hdev,
				 struct wacom_features *features)
{
	struct wacom *wacom = hid_get_drvdata(hdev);
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;

	if (features->type == HID_GENERIC) {
		/* Any last-minute generic device setup */
		if (features->touch_max > 1) {
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			input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max,
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				    INPUT_MT_DIRECT);
		}
	}
}

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static void wacom_parse_hid(struct hid_device *hdev,
			   struct wacom_features *features)
{
	struct hid_report_enum *rep_enum;
	struct hid_report *hreport;
	int i, j;

	/* check features first */
	rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
	list_for_each_entry(hreport, &rep_enum->report_list, list) {
		for (i = 0; i < hreport->maxfield; i++) {
			/* Ignore if report count is out of bounds. */
			if (hreport->field[i]->report_count < 1)
				continue;

			for (j = 0; j < hreport->field[i]->maxusage; j++) {
				wacom_feature_mapping(hdev, hreport->field[i],
						hreport->field[i]->usage + j);
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			}
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		}
	}

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	/* now check the input usages */
	rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
	list_for_each_entry(hreport, &rep_enum->report_list, list) {

		if (!hreport->maxfield)
			continue;

		for (i = 0; i < hreport->maxfield; i++)
			for (j = 0; j < hreport->field[i]->maxusage; j++)
				wacom_usage_mapping(hdev, hreport->field[i],
						hreport->field[i]->usage + j);
	}
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	wacom_post_parse_hid(hdev, features);
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}

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static int wacom_hid_set_device_mode(struct hid_device *hdev)
{
	struct wacom *wacom = hid_get_drvdata(hdev);
	struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
	struct hid_report *r;
	struct hid_report_enum *re;

	if (hid_data->inputmode < 0)
		return 0;

	re = &(hdev->report_enum[HID_FEATURE_REPORT]);
	r = re->report_id_hash[hid_data->inputmode];
	if (r) {
		r->field[0]->value[hid_data->inputmode_index] = 2;
		hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
	}
	return 0;
}

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static int wacom_set_device_mode(struct hid_device *hdev,
				 struct wacom_wac *wacom_wac)
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{
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	u8 *rep_data;
	struct hid_report *r;
	struct hid_report_enum *re;
	int length;
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	int error = -ENOMEM, limit = 0;
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	if (wacom_wac->mode_report < 0)
		return 0;

	re = &(hdev->report_enum[HID_FEATURE_REPORT]);
	r = re->report_id_hash[wacom_wac->mode_report];
	if (!r)
		return -EINVAL;

	rep_data = hid_alloc_report_buf(r, GFP_KERNEL);
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	if (!rep_data)
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		return -ENOMEM;

	length = hid_report_len(r);
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	do {
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		rep_data[0] = wacom_wac->mode_report;
		rep_data[1] = wacom_wac->mode_value;
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		error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
					 length, 1);
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		if (error >= 0)
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			error = wacom_get_report(hdev, HID_FEATURE_REPORT,
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			                         rep_data, length, 1);
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	} while (error >= 0 &&
		 rep_data[1] != wacom_wac->mode_report &&
		 limit++ < WAC_MSG_RETRIES);
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	kfree(rep_data);

	return error < 0 ? error : 0;
}

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static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
		struct wacom_features *features)
{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	int ret;
	u8 rep_data[2];

	switch (features->type) {
	case GRAPHIRE_BT:
		rep_data[0] = 0x03;
		rep_data[1] = 0x00;
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		ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
					3);
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		if (ret >= 0) {
			rep_data[0] = speed == 0 ? 0x05 : 0x06;
			rep_data[1] = 0x00;

			ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
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						rep_data, 2, 3);
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			if (ret >= 0) {
				wacom->wacom_wac.bt_high_speed = speed;
				return 0;
			}
		}

		/*
		 * Note that if the raw queries fail, it's not a hard failure
		 * and it is safe to continue
		 */
		hid_warn(hdev, "failed to poke device, command %d, err %d\n",
			 rep_data[0], ret);
		break;
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	case INTUOS4WL:
		if (speed == 1)
			wacom->wacom_wac.bt_features &= ~0x20;
		else
			wacom->wacom_wac.bt_features |= 0x20;

		rep_data[0] = 0x03;
		rep_data[1] = wacom->wacom_wac.bt_features;

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		ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
					1);
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		if (ret >= 0)
			wacom->wacom_wac.bt_high_speed = speed;
		break;
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	}

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	return 0;
}

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/*
 * Switch the tablet into its most-capable mode. Wacom tablets are
 * typically configured to power-up in a mode which sends mouse-like
 * reports to the OS. To get absolute position, pressure data, etc.
 * from the tablet, it is necessary to switch the tablet out of this
 * mode and into one which sends the full range of tablet data.
 */
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static int wacom_query_tablet_data(struct hid_device *hdev,
		struct wacom_features *features)
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{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;

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	if (hdev->bus == BUS_BLUETOOTH)
		return wacom_bt_query_tablet_data(hdev, 1, features);

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	if (features->type != HID_GENERIC) {
		if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
			if (features->type > TABLETPC) {
				/* MT Tablet PC touch */
				wacom_wac->mode_report = 3;
				wacom_wac->mode_value = 4;
			} else if (features->type == WACOM_24HDT) {
				wacom_wac->mode_report = 18;
				wacom_wac->mode_value = 2;
			} else if (features->type == WACOM_27QHDT) {
				wacom_wac->mode_report = 131;
				wacom_wac->mode_value = 2;
			} else if (features->type == BAMBOO_PAD) {
				wacom_wac->mode_report = 2;
				wacom_wac->mode_value = 2;
			}
		} else if (features->device_type & WACOM_DEVICETYPE_PEN) {
			if (features->type <= BAMBOO_PT) {
				wacom_wac->mode_report = 2;
				wacom_wac->mode_value = 2;
			}
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		}
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	}
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	wacom_set_device_mode(hdev, wacom_wac);

	if (features->type == HID_GENERIC)
		return wacom_hid_set_device_mode(hdev);

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	return 0;
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}

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static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
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					 struct wacom_features *features)
492
{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	struct usb_interface *intf = wacom->intf;
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	/* default features */
	features->x_fuzz = 4;
	features->y_fuzz = 4;
	features->pressure_fuzz = 0;
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	features->distance_fuzz = 1;
	features->tilt_fuzz = 1;
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	/*
	 * The wireless device HID is basic and layout conflicts with
	 * other tablets (monitor and touch interface can look like pen).
	 * Skip the query for this type and modify defaults based on
	 * interface number.
	 */
	if (features->type == WIRELESS) {
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		if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
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			features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
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		else
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			features->device_type = WACOM_DEVICETYPE_NONE;
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		return;
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	}

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	wacom_parse_hid(hdev, features);
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}

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struct wacom_hdev_data {
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	struct list_head list;
	struct kref kref;
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	struct hid_device *dev;
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	struct wacom_shared shared;
};

static LIST_HEAD(wacom_udev_list);
static DEFINE_MUTEX(wacom_udev_list_lock);

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static bool wacom_are_sibling(struct hid_device *hdev,
		struct hid_device *sibling)
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{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	struct wacom_features *features = &wacom->wacom_wac.features;
	int vid = features->oVid;
	int pid = features->oPid;
	int n1,n2;

	if (vid == 0 && pid == 0) {
		vid = hdev->vendor;
		pid = hdev->product;
	}
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	if (vid != sibling->vendor || pid != sibling->product)
		return false;
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	/* Compare the physical path. */
	n1 = strrchr(hdev->phys, '.') - hdev->phys;
	n2 = strrchr(sibling->phys, '.') - sibling->phys;
	if (n1 != n2 || n1 <= 0 || n2 <= 0)
		return false;
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	return !strncmp(hdev->phys, sibling->phys, n1);
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}

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static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
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{
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	struct wacom_hdev_data *data;
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	list_for_each_entry(data, &wacom_udev_list, list) {
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		if (wacom_are_sibling(hdev, data->dev)) {
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			kref_get(&data->kref);
			return data;
		}
	}

	return NULL;
}

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static int wacom_add_shared_data(struct hid_device *hdev)
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{
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	struct wacom *wacom = hid_get_drvdata(hdev);
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_hdev_data *data;
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	int retval = 0;

	mutex_lock(&wacom_udev_list_lock);

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	data = wacom_get_hdev_data(hdev);
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	if (!data) {
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		data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
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		if (!data) {
			retval = -ENOMEM;
			goto out;
		}

		kref_init(&data->kref);
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		data->dev = hdev;
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		list_add_tail(&data->list, &wacom_udev_list);
	}

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	wacom_wac->shared = &data->shared;
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	if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
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		wacom_wac->shared->touch = hdev;
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	else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
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		wacom_wac->shared->pen = hdev;

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out:
	mutex_unlock(&wacom_udev_list_lock);
	return retval;
}

static void wacom_release_shared_data(struct kref *kref)
{
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	struct wacom_hdev_data *data =
		container_of(kref, struct wacom_hdev_data, kref);
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	mutex_lock(&wacom_udev_list_lock);
	list_del(&data->list);
	mutex_unlock(&wacom_udev_list_lock);

	kfree(data);
}

616
static void wacom_remove_shared_data(struct wacom *wacom)
617
{
618
	struct wacom_hdev_data *data;
619 620 621 622 623 624 625 626 627 628
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;

	if (wacom_wac->shared) {
		data = container_of(wacom_wac->shared, struct wacom_hdev_data,
				    shared);

		if (wacom_wac->shared->touch == wacom->hdev)
			wacom_wac->shared->touch = NULL;
		else if (wacom_wac->shared->pen == wacom->hdev)
			wacom_wac->shared->pen = NULL;
629 630

		kref_put(&data->kref, wacom_release_shared_data);
631
		wacom_wac->shared = NULL;
632 633 634
	}
}

635 636 637
static int wacom_led_control(struct wacom *wacom)
{
	unsigned char *buf;
638
	int retval;
639 640
	unsigned char report_id = WAC_CMD_LED_CONTROL;
	int buf_size = 9;
641

642 643 644 645 646
	if (wacom->wacom_wac.pid) { /* wireless connected */
		report_id = WAC_CMD_WL_LED_CONTROL;
		buf_size = 13;
	}
	buf = kzalloc(buf_size, GFP_KERNEL);
647 648 649
	if (!buf)
		return -ENOMEM;

650
	if (wacom->wacom_wac.features.type >= INTUOS5S &&
651
	    wacom->wacom_wac.features.type <= INTUOSPL) {
652 653 654 655 656 657 658 659
		/*
		 * Touch Ring and crop mark LED luminance may take on
		 * one of four values:
		 *    0 = Low; 1 = Medium; 2 = High; 3 = Off
		 */
		int ring_led = wacom->led.select[0] & 0x03;
		int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
		int crop_lum = 0;
660 661 662 663 664 665 666 667 668 669
		unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);

		buf[0] = report_id;
		if (wacom->wacom_wac.pid) {
			wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
					 buf, buf_size, WAC_CMD_RETRIES);
			buf[0] = report_id;
			buf[4] = led_bits;
		} else
			buf[1] = led_bits;
670 671 672 673 674 675 676 677
	}
	else {
		int led = wacom->led.select[0] | 0x4;

		if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
		    wacom->wacom_wac.features.type == WACOM_24HD)
			led |= (wacom->led.select[1] << 4) | 0x40;

678
		buf[0] = report_id;
679 680 681 682 683
		buf[1] = led;
		buf[2] = wacom->led.llv;
		buf[3] = wacom->led.hlv;
		buf[4] = wacom->led.img_lum;
	}
684

685
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
686
				  WAC_CMD_RETRIES);
687 688 689 690 691
	kfree(buf);

	return retval;
}

692 693
static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
		const unsigned len, const void *img)
694 695 696
{
	unsigned char *buf;
	int i, retval;
697
	const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
698

699
	buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
700 701 702 703 704 705
	if (!buf)
		return -ENOMEM;

	/* Send 'start' command */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 1;
706 707
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
				  WAC_CMD_RETRIES);
708 709 710
	if (retval < 0)
		goto out;

711
	buf[0] = xfer_id;
712 713 714
	buf[1] = button_id & 0x07;
	for (i = 0; i < 4; i++) {
		buf[2] = i;
715
		memcpy(buf + 3, img + i * chunk_len, chunk_len);
716

717
		retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
718
					  buf, chunk_len + 3, WAC_CMD_RETRIES);
719 720 721 722 723 724 725
		if (retval < 0)
			break;
	}

	/* Send 'stop' */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 0;
726 727
	wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
			 WAC_CMD_RETRIES);
728 729 730 731 732 733

out:
	kfree(buf);
	return retval;
}

734
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
735 736
				      const char *buf, size_t count)
{
G
Geliang Tang 已提交
737
	struct hid_device *hdev = to_hid_device(dev);
738
	struct wacom *wacom = hid_get_drvdata(hdev);
739 740 741 742 743 744 745 746 747
	unsigned int id;
	int err;

	err = kstrtouint(buf, 10, &id);
	if (err)
		return err;

	mutex_lock(&wacom->lock);

748
	wacom->led.select[set_id] = id & 0x3;
749 750 751 752 753 754 755
	err = wacom_led_control(wacom);

	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

756 757 758 759 760 761
#define DEVICE_LED_SELECT_ATTR(SET_ID)					\
static ssize_t wacom_led##SET_ID##_select_store(struct device *dev,	\
	struct device_attribute *attr, const char *buf, size_t count)	\
{									\
	return wacom_led_select_store(dev, SET_ID, buf, count);		\
}									\
762 763 764
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,	\
	struct device_attribute *attr, char *buf)			\
{									\
G
Geliang Tang 已提交
765
	struct hid_device *hdev = to_hid_device(dev);\
766
	struct wacom *wacom = hid_get_drvdata(hdev);			\
P
Ping Cheng 已提交
767 768
	return scnprintf(buf, PAGE_SIZE, "%d\n",			\
			 wacom->led.select[SET_ID]);			\
769
}									\
770
static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,	\
771
		    wacom_led##SET_ID##_select_show,			\
772 773 774 775
		    wacom_led##SET_ID##_select_store)

DEVICE_LED_SELECT_ATTR(0);
DEVICE_LED_SELECT_ATTR(1);
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800

static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
				     const char *buf, size_t count)
{
	unsigned int value;
	int err;

	err = kstrtouint(buf, 10, &value);
	if (err)
		return err;

	mutex_lock(&wacom->lock);

	*dest = value & 0x7f;
	err = wacom_led_control(wacom);

	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

#define DEVICE_LUMINANCE_ATTR(name, field)				\
static ssize_t wacom_##name##_luminance_store(struct device *dev,	\
	struct device_attribute *attr, const char *buf, size_t count)	\
{									\
G
Geliang Tang 已提交
801
	struct hid_device *hdev = to_hid_device(dev);\
802
	struct wacom *wacom = hid_get_drvdata(hdev);			\
803 804 805 806
									\
	return wacom_luminance_store(wacom, &wacom->led.field,		\
				     buf, count);			\
}									\
P
Ping Cheng 已提交
807 808 809 810 811 812
static ssize_t wacom_##name##_luminance_show(struct device *dev,	\
	struct device_attribute *attr, char *buf)			\
{									\
	struct wacom *wacom = dev_get_drvdata(dev);			\
	return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field);	\
}									\
813
static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,			\
P
Ping Cheng 已提交
814 815
		   wacom_##name##_luminance_show,			\
		   wacom_##name##_luminance_store)
816 817 818 819 820 821 822 823

DEVICE_LUMINANCE_ATTR(status0, llv);
DEVICE_LUMINANCE_ATTR(status1, hlv);
DEVICE_LUMINANCE_ATTR(buttons, img_lum);

static ssize_t wacom_button_image_store(struct device *dev, int button_id,
					const char *buf, size_t count)
{
G
Geliang Tang 已提交
824
	struct hid_device *hdev = to_hid_device(dev);
825
	struct wacom *wacom = hid_get_drvdata(hdev);
826
	int err;
827 828 829 830 831 832 833 834 835 836
	unsigned len;
	u8 xfer_id;

	if (hdev->bus == BUS_BLUETOOTH) {
		len = 256;
		xfer_id = WAC_CMD_ICON_BT_XFER;
	} else {
		len = 1024;
		xfer_id = WAC_CMD_ICON_XFER;
	}
837

838
	if (count != len)
839 840 841 842
		return -EINVAL;

	mutex_lock(&wacom->lock);

843
	err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
844 845 846 847 848 849 850 851 852 853 854 855

	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

#define DEVICE_BTNIMG_ATTR(BUTTON_ID)					\
static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev,	\
	struct device_attribute *attr, const char *buf, size_t count)	\
{									\
	return wacom_button_image_store(dev, BUTTON_ID, buf, count);	\
}									\
856
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,	\
857 858 859 860 861 862 863 864 865 866 867
		   NULL, wacom_btnimg##BUTTON_ID##_store)

DEVICE_BTNIMG_ATTR(0);
DEVICE_BTNIMG_ATTR(1);
DEVICE_BTNIMG_ATTR(2);
DEVICE_BTNIMG_ATTR(3);
DEVICE_BTNIMG_ATTR(4);
DEVICE_BTNIMG_ATTR(5);
DEVICE_BTNIMG_ATTR(6);
DEVICE_BTNIMG_ATTR(7);

868 869 870 871 872 873 874 875 876 877 878 879
static struct attribute *cintiq_led_attrs[] = {
	&dev_attr_status_led0_select.attr,
	&dev_attr_status_led1_select.attr,
	NULL
};

static struct attribute_group cintiq_led_attr_group = {
	.name = "wacom_led",
	.attrs = cintiq_led_attrs,
};

static struct attribute *intuos4_led_attrs[] = {
880 881
	&dev_attr_status0_luminance.attr,
	&dev_attr_status1_luminance.attr,
882
	&dev_attr_status_led0_select.attr,
883 884 885 886 887 888 889 890 891 892 893 894
	&dev_attr_buttons_luminance.attr,
	&dev_attr_button0_rawimg.attr,
	&dev_attr_button1_rawimg.attr,
	&dev_attr_button2_rawimg.attr,
	&dev_attr_button3_rawimg.attr,
	&dev_attr_button4_rawimg.attr,
	&dev_attr_button5_rawimg.attr,
	&dev_attr_button6_rawimg.attr,
	&dev_attr_button7_rawimg.attr,
	NULL
};

895
static struct attribute_group intuos4_led_attr_group = {
896
	.name = "wacom_led",
897
	.attrs = intuos4_led_attrs,
898 899
};

900 901 902 903 904 905 906 907 908 909 910
static struct attribute *intuos5_led_attrs[] = {
	&dev_attr_status0_luminance.attr,
	&dev_attr_status_led0_select.attr,
	NULL
};

static struct attribute_group intuos5_led_attr_group = {
	.name = "wacom_led",
	.attrs = intuos5_led_attrs,
};

911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949
struct wacom_sysfs_group_devres {
	struct attribute_group *group;
	struct kobject *root;
};

static void wacom_devm_sysfs_group_release(struct device *dev, void *res)
{
	struct wacom_sysfs_group_devres *devres = res;
	struct kobject *kobj = devres->root;

	dev_dbg(dev, "%s: dropping reference to %s\n",
		__func__, devres->group->name);
	sysfs_remove_group(kobj, devres->group);
}

static int wacom_devm_sysfs_create_group(struct wacom *wacom,
					 struct attribute_group *group)
{
	struct wacom_sysfs_group_devres *devres;
	int error;

	devres = devres_alloc(wacom_devm_sysfs_group_release,
			      sizeof(struct wacom_sysfs_group_devres),
			      GFP_KERNEL);
	if (!devres)
		return -ENOMEM;

	devres->group = group;
	devres->root = &wacom->hdev->dev.kobj;

	error = sysfs_create_group(devres->root, group);
	if (error)
		return error;

	devres_add(&wacom->hdev->dev, devres);

	return 0;
}

950 951 952 953
static int wacom_initialize_leds(struct wacom *wacom)
{
	int error;

954 955 956
	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return 0;

957 958
	/* Initialize default values */
	switch (wacom->wacom_wac.features.type) {
959
	case INTUOS4S:
960
	case INTUOS4:
961
	case INTUOS4WL:
962 963 964
	case INTUOS4L:
		wacom->led.select[0] = 0;
		wacom->led.select[1] = 0;
965
		wacom->led.llv = 10;
966 967
		wacom->led.hlv = 20;
		wacom->led.img_lum = 10;
968 969
		error = wacom_devm_sysfs_create_group(wacom,
						      &intuos4_led_attr_group);
970 971
		break;

972
	case WACOM_24HD:
973 974 975 976 977 978
	case WACOM_21UX2:
		wacom->led.select[0] = 0;
		wacom->led.select[1] = 0;
		wacom->led.llv = 0;
		wacom->led.hlv = 0;
		wacom->led.img_lum = 0;
979

980 981
		error = wacom_devm_sysfs_create_group(wacom,
						      &cintiq_led_attr_group);
982 983
		break;

984 985 986
	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
987 988 989
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
990 991 992 993 994 995
		wacom->led.select[0] = 0;
		wacom->led.select[1] = 0;
		wacom->led.llv = 32;
		wacom->led.hlv = 0;
		wacom->led.img_lum = 0;

996 997
		error = wacom_devm_sysfs_create_group(wacom,
						      &intuos5_led_attr_group);
998 999
		break;

1000 1001
	default:
		return 0;
1002 1003
	}

1004
	if (error) {
1005
		hid_err(wacom->hdev,
1006 1007 1008 1009 1010
			"cannot create sysfs group err: %d\n", error);
		return error;
	}
	wacom_led_control(wacom);

1011 1012 1013
	return 0;
}

1014
static enum power_supply_property wacom_battery_props[] = {
1015
	POWER_SUPPLY_PROP_PRESENT,
1016
	POWER_SUPPLY_PROP_STATUS,
1017
	POWER_SUPPLY_PROP_SCOPE,
1018 1019 1020
	POWER_SUPPLY_PROP_CAPACITY
};

1021 1022 1023 1024 1025 1026
static enum power_supply_property wacom_ac_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_SCOPE,
};

1027 1028 1029 1030
static int wacom_battery_get_property(struct power_supply *psy,
				      enum power_supply_property psp,
				      union power_supply_propval *val)
{
1031
	struct wacom *wacom = power_supply_get_drvdata(psy);
1032 1033 1034
	int ret = 0;

	switch (psp) {
1035 1036 1037
		case POWER_SUPPLY_PROP_PRESENT:
			val->intval = wacom->wacom_wac.bat_connected;
			break;
1038 1039 1040
		case POWER_SUPPLY_PROP_SCOPE:
			val->intval = POWER_SUPPLY_SCOPE_DEVICE;
			break;
1041 1042
		case POWER_SUPPLY_PROP_CAPACITY:
			val->intval =
1043 1044 1045 1046 1047 1048 1049 1050
				wacom->wacom_wac.battery_capacity;
			break;
		case POWER_SUPPLY_PROP_STATUS:
			if (wacom->wacom_wac.bat_charging)
				val->intval = POWER_SUPPLY_STATUS_CHARGING;
			else if (wacom->wacom_wac.battery_capacity == 100 &&
				    wacom->wacom_wac.ps_connected)
				val->intval = POWER_SUPPLY_STATUS_FULL;
1051 1052
			else if (wacom->wacom_wac.ps_connected)
				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1053 1054
			else
				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1055 1056 1057 1058 1059 1060 1061 1062 1063
			break;
		default:
			ret = -EINVAL;
			break;
	}

	return ret;
}

1064 1065 1066 1067
static int wacom_ac_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
1068
	struct wacom *wacom = power_supply_get_drvdata(psy);
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_PRESENT:
		/* fall through */
	case POWER_SUPPLY_PROP_ONLINE:
		val->intval = wacom->wacom_wac.ps_connected;
		break;
	case POWER_SUPPLY_PROP_SCOPE:
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

1087 1088
static int wacom_initialize_battery(struct wacom *wacom)
{
1089
	static atomic_t battery_no = ATOMIC_INIT(0);
1090
	struct device *dev = &wacom->hdev->dev;
1091
	struct power_supply_config psy_cfg = { .drv_data = wacom, };
1092
	struct power_supply_desc *bat_desc = &wacom->battery_desc;
1093
	unsigned long n;
1094 1095 1096 1097
	int error;

	if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
		return -ENOMEM;
1098

1099
	if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1100
		struct power_supply_desc *ac_desc = &wacom->ac_desc;
1101
		n = atomic_inc_return(&battery_no) - 1;
1102

1103 1104 1105
		bat_desc->properties = wacom_battery_props;
		bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
		bat_desc->get_property = wacom_battery_get_property;
1106
		sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1107 1108 1109
		bat_desc->name = wacom->wacom_wac.bat_name;
		bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
		bat_desc->use_for_apm = 0;
1110

1111 1112 1113
		ac_desc->properties = wacom_ac_props;
		ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
		ac_desc->get_property = wacom_ac_get_property;
1114
		sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1115 1116 1117 1118
		ac_desc->name = wacom->wacom_wac.ac_name;
		ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
		ac_desc->use_for_apm = 0;

1119 1120 1121 1122 1123 1124 1125
		wacom->battery = devm_power_supply_register(dev,
							   &wacom->battery_desc,
							   &psy_cfg);
		if (IS_ERR(wacom->battery)) {
			error = PTR_ERR(wacom->battery);
			goto err;
		}
1126 1127 1128

		power_supply_powers(wacom->battery, &wacom->hdev->dev);

1129 1130 1131
		wacom->ac = devm_power_supply_register(dev,
						       &wacom->ac_desc,
						       &psy_cfg);
1132
		if (IS_ERR(wacom->ac)) {
1133 1134
			error = PTR_ERR(wacom->ac);
			goto err;
1135 1136
		}

1137
		power_supply_powers(wacom->ac, &wacom->hdev->dev);
1138 1139
	}

1140
	devres_close_group(dev, bat_desc);
1141
	return 0;
1142 1143 1144 1145

err:
	devres_release_group(dev, bat_desc);
	return error;
1146 1147 1148 1149
}

static void wacom_destroy_battery(struct wacom *wacom)
{
1150
	if (wacom->battery) {
1151
		devres_release_group(&wacom->hdev->dev, &wacom->battery_desc);
1152 1153
		wacom->battery = NULL;
		wacom->ac = NULL;
1154
	}
1155 1156
}

1157 1158 1159 1160
static ssize_t wacom_show_speed(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
G
Geliang Tang 已提交
1161
	struct hid_device *hdev = to_hid_device(dev);
1162 1163 1164 1165 1166 1167 1168 1169 1170
	struct wacom *wacom = hid_get_drvdata(hdev);

	return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
}

static ssize_t wacom_store_speed(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
G
Geliang Tang 已提交
1171
	struct hid_device *hdev = to_hid_device(dev);
1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185
	struct wacom *wacom = hid_get_drvdata(hdev);
	u8 new_speed;

	if (kstrtou8(buf, 0, &new_speed))
		return -EINVAL;

	if (new_speed != 0 && new_speed != 1)
		return -EINVAL;

	wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);

	return count;
}

1186
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1187 1188
		wacom_show_speed, wacom_store_speed);

1189 1190 1191 1192 1193

static ssize_t wacom_show_remote_mode(struct kobject *kobj,
				      struct kobj_attribute *kattr,
				      char *buf, int index)
{
G
Geliang Tang 已提交
1194
	struct device *dev = kobj_to_dev(kobj->parent);
G
Geliang Tang 已提交
1195
	struct hid_device *hdev = to_hid_device(dev);
1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
	struct wacom *wacom = hid_get_drvdata(hdev);
	u8 mode;

	mode = wacom->led.select[index];
	if (mode >= 0 && mode < 3)
		return snprintf(buf, PAGE_SIZE, "%d\n", mode);
	else
		return snprintf(buf, PAGE_SIZE, "%d\n", -1);
}

#define DEVICE_EKR_ATTR_GROUP(SET_ID)					\
static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj,	\
			       struct kobj_attribute *kattr, char *buf)	\
{									\
	return wacom_show_remote_mode(kobj, kattr, buf, SET_ID);	\
}									\
static struct kobj_attribute remote##SET_ID##_mode_attr = {		\
	.attr = {.name = "remote_mode",					\
		.mode = DEV_ATTR_RO_PERM},				\
	.show = wacom_show_remote##SET_ID##_mode,			\
};									\
static struct attribute *remote##SET_ID##_serial_attrs[] = {		\
	&remote##SET_ID##_mode_attr.attr,				\
	NULL								\
};									\
static struct attribute_group remote##SET_ID##_serial_group = {		\
	.name = NULL,							\
	.attrs = remote##SET_ID##_serial_attrs,				\
}

DEVICE_EKR_ATTR_GROUP(0);
DEVICE_EKR_ATTR_GROUP(1);
DEVICE_EKR_ATTR_GROUP(2);
DEVICE_EKR_ATTR_GROUP(3);
DEVICE_EKR_ATTR_GROUP(4);

int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index)
{
	int error = 0;
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;

	wacom_wac->serial[index] = serial;

1239 1240 1241 1242
	wacom->remote_group[index].name = devm_kasprintf(&wacom->hdev->dev,
							 GFP_KERNEL,
							 "%d", serial);
	if (!wacom->remote_group[index].name)
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270
		return -ENOMEM;

	error = sysfs_create_group(wacom->remote_dir,
				   &wacom->remote_group[index]);
	if (error) {
		hid_err(wacom->hdev,
			"cannot create sysfs group err: %d\n", error);
		return error;
	}

	return 0;
}

void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
{
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	int i;

	if (!serial)
		return;

	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
		if (wacom_wac->serial[i] == serial) {
			wacom_wac->serial[i] = 0;
			wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
			if (wacom->remote_group[i].name) {
				sysfs_remove_group(wacom->remote_dir,
						   &wacom->remote_group[i]);
1271 1272
				devm_kfree(&wacom->hdev->dev,
					   (char *)wacom->remote_group[i].name);
1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303
				wacom->remote_group[i].name = NULL;
			}
		}
	}
}

static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
{
	const size_t buf_size = 2;
	unsigned char *buf;
	int retval;

	buf = kzalloc(buf_size, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	buf[0] = WAC_CMD_DELETE_PAIRING;
	buf[1] = selector;

	retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
				  buf_size, WAC_CMD_RETRIES);
	kfree(buf);

	return retval;
}

static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
					 struct kobj_attribute *attr,
					 const char *buf, size_t count)
{
	unsigned char selector = 0;
G
Geliang Tang 已提交
1304
	struct device *dev = kobj_to_dev(kobj->parent);
G
Geliang Tang 已提交
1305
	struct hid_device *hdev = to_hid_device(dev);
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
	struct wacom *wacom = hid_get_drvdata(hdev);
	int err;

	if (!strncmp(buf, "*\n", 2)) {
		selector = WAC_CMD_UNPAIR_ALL;
	} else {
		hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
			 buf);
		return -1;
	}

	mutex_lock(&wacom->lock);

	err = wacom_cmd_unpair_remote(wacom, selector);
	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

static struct kobj_attribute unpair_remote_attr = {
	.attr = {.name = "unpair_remote", .mode = 0200},
	.store = wacom_store_unpair_remote,
};

static const struct attribute *remote_unpair_attrs[] = {
	&unpair_remote_attr.attr,
	NULL
};

static int wacom_initialize_remote(struct wacom *wacom)
{
	int error = 0;
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
	int i;

	if (wacom->wacom_wac.features.type != REMOTE)
		return 0;

	wacom->remote_group[0] = remote0_serial_group;
	wacom->remote_group[1] = remote1_serial_group;
	wacom->remote_group[2] = remote2_serial_group;
	wacom->remote_group[3] = remote3_serial_group;
	wacom->remote_group[4] = remote4_serial_group;

	wacom->remote_dir = kobject_create_and_add("wacom_remote",
						   &wacom->hdev->dev.kobj);
	if (!wacom->remote_dir)
		return -ENOMEM;

	error = sysfs_create_files(wacom->remote_dir, remote_unpair_attrs);

	if (error) {
		hid_err(wacom->hdev,
			"cannot create sysfs group err: %d\n", error);
		return error;
	}

	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
		wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
		wacom_wac->serial[i] = 0;
	}

	return 0;
}

1371
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1372 1373
{
	struct input_dev *input_dev;
1374
	struct hid_device *hdev = wacom->hdev;
1375 1376
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

1377
	input_dev = devm_input_allocate_device(&hdev->dev);
1378 1379
	if (!input_dev)
		return NULL;
1380

1381
	input_dev->name = wacom_wac->features.name;
1382 1383
	input_dev->phys = hdev->phys;
	input_dev->dev.parent = &hdev->dev;
1384 1385
	input_dev->open = wacom_open;
	input_dev->close = wacom_close;
1386 1387 1388
	input_dev->uniq = hdev->uniq;
	input_dev->id.bustype = hdev->bus;
	input_dev->id.vendor  = hdev->vendor;
1389
	input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1390
	input_dev->id.version = hdev->version;
1391 1392
	input_set_drvdata(input_dev, wacom);

1393 1394 1395
	return input_dev;
}

1396 1397 1398 1399 1400 1401 1402
static int wacom_allocate_inputs(struct wacom *wacom)
{
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

	wacom_wac->pen_input = wacom_allocate_input(wacom);
	wacom_wac->touch_input = wacom_allocate_input(wacom);
	wacom_wac->pad_input = wacom_allocate_input(wacom);
1403 1404 1405
	if (!wacom_wac->pen_input ||
	    !wacom_wac->touch_input ||
	    !wacom_wac->pad_input)
1406 1407
		return -ENOMEM;

1408
	wacom_wac->pen_input->name = wacom_wac->pen_name;
1409 1410 1411 1412 1413 1414
	wacom_wac->touch_input->name = wacom_wac->touch_name;
	wacom_wac->pad_input->name = wacom_wac->pad_name;

	return 0;
}

1415 1416
static int wacom_register_inputs(struct wacom *wacom)
{
1417
	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1418
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1419
	int error = 0;
1420

1421 1422
	pen_input_dev = wacom_wac->pen_input;
	touch_input_dev = wacom_wac->touch_input;
1423 1424
	pad_input_dev = wacom_wac->pad_input;

1425
	if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1426 1427
		return -EINVAL;

1428 1429 1430 1431 1432 1433 1434 1435 1436
	error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac);
	if (error) {
		/* no pen in use on this interface */
		input_free_device(pen_input_dev);
		wacom_wac->pen_input = NULL;
		pen_input_dev = NULL;
	} else {
		error = input_register_device(pen_input_dev);
		if (error)
1437
			goto fail;
1438 1439 1440 1441 1442 1443 1444 1445 1446 1447
	}

	error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
	if (error) {
		/* no touch in use on this interface */
		input_free_device(touch_input_dev);
		wacom_wac->touch_input = NULL;
		touch_input_dev = NULL;
	} else {
		error = input_register_device(touch_input_dev);
1448
		if (error)
1449
			goto fail;
1450
	}
1451

1452 1453 1454 1455 1456 1457 1458 1459 1460
	error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
	if (error) {
		/* no pad in use on this interface */
		input_free_device(pad_input_dev);
		wacom_wac->pad_input = NULL;
		pad_input_dev = NULL;
	} else {
		error = input_register_device(pad_input_dev);
		if (error)
1461
			goto fail;
1462 1463
	}

1464
	return 0;
1465

1466 1467
fail:
	wacom_wac->pad_input = NULL;
1468 1469
	wacom_wac->touch_input = NULL;
	wacom_wac->pen_input = NULL;
1470 1471 1472
	return error;
}

1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505
/*
 * Not all devices report physical dimensions from HID.
 * Compute the default from hardcoded logical dimension
 * and resolution before driver overwrites them.
 */
static void wacom_set_default_phy(struct wacom_features *features)
{
	if (features->x_resolution) {
		features->x_phy = (features->x_max * 100) /
					features->x_resolution;
		features->y_phy = (features->y_max * 100) /
					features->y_resolution;
	}
}

static void wacom_calculate_res(struct wacom_features *features)
{
	/* set unit to "100th of a mm" for devices not reported by HID */
	if (!features->unit) {
		features->unit = 0x11;
		features->unitExpo = -3;
	}

	features->x_resolution = wacom_calc_hid_res(features->x_max,
						    features->x_phy,
						    features->unit,
						    features->unitExpo);
	features->y_resolution = wacom_calc_hid_res(features->y_max,
						    features->y_phy,
						    features->unit,
						    features->unitExpo);
}

1506 1507
void wacom_battery_work(struct work_struct *work)
{
1508
	struct wacom *wacom = container_of(work, struct wacom, battery_work);
1509 1510

	if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1511
	     !wacom->battery) {
1512 1513 1514
		wacom_initialize_battery(wacom);
	}
	else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1515
		 wacom->battery) {
1516 1517 1518 1519
		wacom_destroy_battery(wacom);
	}
}

1520 1521 1522 1523 1524 1525 1526 1527 1528
static size_t wacom_compute_pktlen(struct hid_device *hdev)
{
	struct hid_report_enum *report_enum;
	struct hid_report *report;
	size_t size = 0;

	report_enum = hdev->report_enum + HID_INPUT_REPORT;

	list_for_each_entry(report, &report_enum->report_list, list) {
1529
		size_t report_size = hid_report_len(report);
1530 1531 1532 1533 1534 1535 1536
		if (report_size > size)
			size = report_size;
	}

	return size;
}

1537
static void wacom_update_name(struct wacom *wacom, const char *suffix)
1538 1539 1540
{
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
1541
	char name[WACOM_NAME_MAX];
1542 1543 1544 1545 1546 1547 1548

	/* Generic devices name unspecified */
	if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
		if (strstr(wacom->hdev->name, "Wacom") ||
		    strstr(wacom->hdev->name, "wacom") ||
		    strstr(wacom->hdev->name, "WACOM")) {
			/* name is in HID descriptor, use it */
1549
			strlcpy(name, wacom->hdev->name, sizeof(name));
1550 1551 1552

			/* strip out excess whitespaces */
			while (1) {
1553
				char *gap = strstr(name, "  ");
1554 1555 1556 1557 1558 1559
				if (gap == NULL)
					break;
				/* shift everything including the terminator */
				memmove(gap, gap+1, strlen(gap));
			}
			/* get rid of trailing whitespace */
1560 1561
			if (name[strlen(name)-1] == ' ')
				name[strlen(name)-1] = '\0';
1562 1563
		} else {
			/* no meaningful name retrieved. use product ID */
1564
			snprintf(name, sizeof(name),
1565 1566 1567
				 "%s %X", features->name, wacom->hdev->product);
		}
	} else {
1568
		strlcpy(name, features->name, sizeof(name));
1569 1570 1571
	}

	/* Append the device type to the name */
1572
	snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1573
		"%s%s Pen", name, suffix);
1574
	snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1575
		"%s%s Finger", name, suffix);
1576
	snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1577
		"%s%s Pad", name, suffix);
1578 1579
}

1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595
static void wacom_release_resources(struct wacom *wacom)
{
	struct hid_device *hdev = wacom->hdev;

	if (!wacom->resources)
		return;

	devres_release_group(&hdev->dev, wacom);

	wacom->resources = false;

	wacom->wacom_wac.pen_input = NULL;
	wacom->wacom_wac.touch_input = NULL;
	wacom->wacom_wac.pad_input = NULL;
}

1596
static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
1597
{
1598 1599 1600
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
	struct hid_device *hdev = wacom->hdev;
1601
	int error;
1602
	unsigned int connect_mask = HID_CONNECT_HIDRAW;
1603

1604
	features->pktlen = wacom_compute_pktlen(hdev);
1605 1606
	if (features->pktlen > WACOM_PKGLEN_MAX)
		return -EINVAL;
1607

1608 1609 1610 1611 1612
	if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
		return -ENOMEM;

	wacom->resources = true;

1613 1614
	error = wacom_allocate_inputs(wacom);
	if (error)
1615
		goto fail_open_group;
1616

1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627
	/*
	 * Bamboo Pad has a generic hid handling for the Pen, and we switch it
	 * into debug mode for the touch part.
	 * We ignore the other interfaces.
	 */
	if (features->type == BAMBOO_PAD) {
		if (features->pktlen == WACOM_PKGLEN_PENABLED) {
			features->type = HID_GENERIC;
		} else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) &&
			   (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) {
			error = -ENODEV;
1628
			goto fail_allocate_inputs;
1629 1630 1631
		}
	}

1632 1633 1634
	/* set the default size in case we do not get them from hid */
	wacom_set_default_phy(features);

1635
	/* Retrieve the physical and logical size for touch devices */
1636
	wacom_retrieve_hid_descriptor(hdev, features);
1637
	wacom_setup_device_quirks(wacom);
1638

1639 1640
	if (features->device_type == WACOM_DEVICETYPE_NONE &&
	    features->type != WIRELESS) {
1641 1642
		error = features->type == HID_GENERIC ? -ENODEV : 0;

1643
		dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1644 1645 1646 1647
			 hdev->name,
			 error ? "Ignoring" : "Assuming pen");

		if (error)
1648
			goto fail_parsed;
1649

1650
		features->device_type |= WACOM_DEVICETYPE_PEN;
1651 1652
	}

1653 1654
	wacom_calculate_res(features);

1655
	wacom_update_name(wacom, wireless ? " (WL)" : "");
1656

1657 1658 1659
	error = wacom_add_shared_data(hdev);
	if (error)
		goto fail_shared_data;
1660

1661
	if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1662 1663 1664
	     (features->quirks & WACOM_QUIRK_BATTERY)) {
		error = wacom_initialize_battery(wacom);
		if (error)
1665
			goto fail_battery;
1666 1667
	}

1668 1669 1670
	error = wacom_register_inputs(wacom);
	if (error)
		goto fail_register_inputs;
1671

1672
	if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {
1673 1674 1675 1676
		error = wacom_initialize_leds(wacom);
		if (error)
			goto fail_leds;

1677 1678 1679 1680 1681
		error = wacom_initialize_remote(wacom);
		if (error)
			goto fail_remote;
	}

1682 1683 1684
	if (features->type == HID_GENERIC)
		connect_mask |= HID_CONNECT_DRIVER;

1685
	/* Regular HID work starts now */
1686
	error = hid_hw_start(hdev, connect_mask);
1687 1688
	if (error) {
		hid_err(hdev, "hw start failed\n");
1689
		goto fail_hw_start;
1690
	}
1691

1692 1693 1694 1695
	if (!wireless) {
		/* Note that if query fails it is not a hard failure */
		wacom_query_tablet_data(hdev, features);
	}
1696 1697 1698 1699 1700

	/* touch only Bamboo doesn't support pen */
	if ((features->type == BAMBOO_TOUCH) &&
	    (features->device_type & WACOM_DEVICETYPE_PEN)) {
		error = -ENODEV;
1701
		goto fail_quirks;
1702 1703 1704 1705 1706 1707 1708
	}

	/* pen only Bamboo neither support touch nor pad */
	if ((features->type == BAMBOO_PEN) &&
	    ((features->device_type & WACOM_DEVICETYPE_TOUCH) ||
	    (features->device_type & WACOM_DEVICETYPE_PAD))) {
		error = -ENODEV;
1709
		goto fail_quirks;
1710 1711
	}

1712
	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1713 1714
		error = hid_hw_open(hdev);

1715
	if ((wacom_wac->features.type == INTUOSHT ||
1716
	     wacom_wac->features.type == INTUOSHT2) &&
1717
	    (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1718 1719
		wacom_wac->shared->type = wacom_wac->features.type;
		wacom_wac->shared->touch_input = wacom_wac->touch_input;
1720 1721
	}

1722 1723
	devres_close_group(&hdev->dev, wacom);

1724 1725
	return 0;

1726
fail_quirks:
1727
	hid_hw_stop(hdev);
1728 1729 1730
fail_hw_start:
	kobject_put(wacom->remote_dir);
fail_remote:
1731
fail_leds:
1732
fail_register_inputs:
1733
fail_battery:
1734
	wacom_remove_shared_data(wacom);
1735
fail_shared_data:
1736
fail_parsed:
1737
fail_allocate_inputs:
1738 1739
fail_open_group:
	wacom_release_resources(wacom);
1740 1741 1742
	return error;
}

1743 1744
static void wacom_wireless_work(struct work_struct *work)
{
1745
	struct wacom *wacom = container_of(work, struct wacom, wireless_work);
1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763
	struct usb_device *usbdev = wacom->usbdev;
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct hid_device *hdev1, *hdev2;
	struct wacom *wacom1, *wacom2;
	struct wacom_wac *wacom_wac1, *wacom_wac2;
	int error;

	/*
	 * Regardless if this is a disconnect or a new tablet,
	 * remove any existing input and battery devices.
	 */

	wacom_destroy_battery(wacom);

	/* Stylus interface */
	hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
	wacom1 = hid_get_drvdata(hdev1);
	wacom_wac1 = &(wacom1->wacom_wac);
1764
	wacom_release_resources(wacom1);
1765 1766 1767 1768 1769

	/* Touch interface */
	hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
	wacom2 = hid_get_drvdata(hdev2);
	wacom_wac2 = &(wacom2->wacom_wac);
1770
	wacom_release_resources(wacom2);
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795

	if (wacom_wac->pid == 0) {
		hid_info(wacom->hdev, "wireless tablet disconnected\n");
		wacom_wac1->shared->type = 0;
	} else {
		const struct hid_device_id *id = wacom_ids;

		hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
			 wacom_wac->pid);

		while (id->bus) {
			if (id->vendor == USB_VENDOR_ID_WACOM &&
			    id->product == wacom_wac->pid)
				break;
			id++;
		}

		if (!id->bus) {
			hid_info(wacom->hdev, "ignoring unknown PID.\n");
			return;
		}

		/* Stylus interface */
		wacom_wac1->features =
			*((struct wacom_features *)id->driver_data);
1796

1797
		wacom_wac1->pid = wacom_wac->pid;
1798 1799
		hid_hw_stop(hdev1);
		error = wacom_parse_and_register(wacom1, true);
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809
		if (error)
			goto fail;

		/* Touch interface */
		if (wacom_wac1->features.touch_max ||
		    (wacom_wac1->features.type >= INTUOSHT &&
		    wacom_wac1->features.type <= BAMBOO_PT)) {
			wacom_wac2->features =
				*((struct wacom_features *)id->driver_data);
			wacom_wac2->pid = wacom_wac->pid;
1810 1811
			hid_hw_stop(hdev2);
			error = wacom_parse_and_register(wacom2, true);
1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823
			if (error)
				goto fail;
		}

		error = wacom_initialize_battery(wacom);
		if (error)
			goto fail;
	}

	return;

fail:
1824 1825
	wacom_release_resources(wacom1);
	wacom_release_resources(wacom2);
1826 1827 1828
	return;
}

1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846
static int wacom_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct usb_device *dev = interface_to_usbdev(intf);
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
	struct wacom_features *features;
	int error;

	if (!id->driver_data)
		return -EINVAL;

	hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;

	/* hid-core sets this quirk for the boot interface */
	hdev->quirks &= ~HID_QUIRK_NOGET;

1847
	wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);
1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862
	if (!wacom)
		return -ENOMEM;

	hid_set_drvdata(hdev, wacom);
	wacom->hdev = hdev;

	wacom_wac = &wacom->wacom_wac;
	wacom_wac->features = *((struct wacom_features *)id->driver_data);
	features = &wacom_wac->features;

	if (features->check_for_hid_type && features->hid_type != hdev->type) {
		error = -ENODEV;
		goto fail_type;
	}

1863
	wacom_wac->hid_data.inputmode = -1;
1864
	wacom_wac->mode_report = -1;
1865

1866 1867 1868
	wacom->usbdev = dev;
	wacom->intf = intf;
	mutex_init(&wacom->lock);
1869 1870
	INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
	INIT_WORK(&wacom->battery_work, wacom_battery_work);
1871 1872 1873 1874 1875 1876 1877 1878

	/* ask for the report descriptor to be loaded by HID */
	error = hid_parse(hdev);
	if (error) {
		hid_err(hdev, "parse failed\n");
		goto fail_parse;
	}

1879
	error = wacom_parse_and_register(wacom, false);
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892
	if (error)
		goto fail_parse;

	if (hdev->bus == BUS_BLUETOOTH) {
		error = device_create_file(&hdev->dev, &dev_attr_speed);
		if (error)
			hid_warn(hdev,
				 "can't create sysfs speed attribute err: %d\n",
				 error);
	}

	return 0;

1893 1894
fail_type:
fail_parse:
1895
	hid_set_drvdata(hdev, NULL);
1896
	return error;
1897 1898
}

1899
static void wacom_remove(struct hid_device *hdev)
1900
{
1901
	struct wacom *wacom = hid_get_drvdata(hdev);
1902 1903 1904 1905 1906
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;

	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
		hid_hw_close(hdev);
1907

1908
	hid_hw_stop(hdev);
1909

1910 1911
	cancel_work_sync(&wacom->wireless_work);
	cancel_work_sync(&wacom->battery_work);
1912
	kobject_put(wacom->remote_dir);
1913 1914
	if (hdev->bus == BUS_BLUETOOTH)
		device_remove_file(&hdev->dev, &dev_attr_speed);
1915
	wacom_remove_shared_data(wacom);
1916

1917
	hid_set_drvdata(hdev, NULL);
1918 1919
}

1920
#ifdef CONFIG_PM
1921
static int wacom_resume(struct hid_device *hdev)
1922
{
1923
	struct wacom *wacom = hid_get_drvdata(hdev);
1924
	struct wacom_features *features = &wacom->wacom_wac.features;
1925 1926

	mutex_lock(&wacom->lock);
1927 1928

	/* switch to wacom mode first */
1929
	wacom_query_tablet_data(hdev, features);
1930
	wacom_led_control(wacom);
1931

1932 1933
	mutex_unlock(&wacom->lock);

1934
	return 0;
1935 1936
}

1937
static int wacom_reset_resume(struct hid_device *hdev)
1938
{
1939
	return wacom_resume(hdev);
1940
}
1941
#endif /* CONFIG_PM */
1942

1943
static struct hid_driver wacom_driver = {
1944
	.name =		"wacom",
1945
	.id_table =	wacom_ids,
1946
	.probe =	wacom_probe,
1947
	.remove =	wacom_remove,
1948
	.report =	wacom_wac_report,
1949
#ifdef CONFIG_PM
1950 1951
	.resume =	wacom_resume,
	.reset_resume =	wacom_reset_resume,
1952 1953
#endif
	.raw_event =	wacom_raw_event,
1954
};
1955
module_hid_driver(wacom_driver);
1956 1957 1958 1959 1960

MODULE_VERSION(DRIVER_VERSION);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);