wacom_sys.c 54.9 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)
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{
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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 void wacom_release_shared_data(struct kref *kref)
{
	struct wacom_hdev_data *data =
		container_of(kref, struct wacom_hdev_data, kref);

	mutex_lock(&wacom_udev_list_lock);
	list_del(&data->list);
	mutex_unlock(&wacom_udev_list_lock);

	kfree(data);
}

static void wacom_remove_shared_data(void *res)
{
	struct wacom *wacom = res;
	struct wacom_hdev_data *data;
	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;

		kref_put(&data->kref, wacom_release_shared_data);
		wacom_wac->shared = 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);
612
	if (!data) {
613
		data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
614 615 616 617 618 619
		if (!data) {
			retval = -ENOMEM;
			goto out;
		}

		kref_init(&data->kref);
620
		data->dev = hdev;
621 622 623
		list_add_tail(&data->list, &wacom_udev_list);
	}

624
	wacom_wac->shared = &data->shared;
625

626 627 628 629 630 631 632
	retval = devm_add_action(&hdev->dev, wacom_remove_shared_data, wacom);
	if (retval) {
		mutex_unlock(&wacom_udev_list_lock);
		wacom_remove_shared_data(wacom);
		return retval;
	}

633
	if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)
634
		wacom_wac->shared->touch = hdev;
635
	else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN)
636 637
		wacom_wac->shared->pen = hdev;

638 639 640 641 642
out:
	mutex_unlock(&wacom_udev_list_lock);
	return retval;
}

643 644 645
static int wacom_led_control(struct wacom *wacom)
{
	unsigned char *buf;
646
	int retval;
647 648
	unsigned char report_id = WAC_CMD_LED_CONTROL;
	int buf_size = 9;
649

650 651 652
	if (!wacom->led.groups)
		return -ENOTSUPP;

653 654 655 656 657
	if (wacom->wacom_wac.pid) { /* wireless connected */
		report_id = WAC_CMD_WL_LED_CONTROL;
		buf_size = 13;
	}
	buf = kzalloc(buf_size, GFP_KERNEL);
658 659 660
	if (!buf)
		return -ENOMEM;

661
	if (wacom->wacom_wac.features.type >= INTUOS5S &&
662
	    wacom->wacom_wac.features.type <= INTUOSPL) {
663 664 665 666 667
		/*
		 * Touch Ring and crop mark LED luminance may take on
		 * one of four values:
		 *    0 = Low; 1 = Medium; 2 = High; 3 = Off
		 */
668
		int ring_led = wacom->led.groups[0].select & 0x03;
669 670
		int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
		int crop_lum = 0;
671 672 673 674 675 676 677 678 679 680
		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;
681 682
	}
	else {
683
		int led = wacom->led.groups[0].select | 0x4;
684 685 686

		if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
		    wacom->wacom_wac.features.type == WACOM_24HD)
687
			led |= (wacom->led.groups[1].select << 4) | 0x40;
688

689
		buf[0] = report_id;
690 691 692 693 694
		buf[1] = led;
		buf[2] = wacom->led.llv;
		buf[3] = wacom->led.hlv;
		buf[4] = wacom->led.img_lum;
	}
695

696
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
697
				  WAC_CMD_RETRIES);
698 699 700 701 702
	kfree(buf);

	return retval;
}

703 704
static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
		const unsigned len, const void *img)
705 706 707
{
	unsigned char *buf;
	int i, retval;
708
	const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
709

710
	buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
711 712 713 714 715 716
	if (!buf)
		return -ENOMEM;

	/* Send 'start' command */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 1;
717 718
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
				  WAC_CMD_RETRIES);
719 720 721
	if (retval < 0)
		goto out;

722
	buf[0] = xfer_id;
723 724 725
	buf[1] = button_id & 0x07;
	for (i = 0; i < 4; i++) {
		buf[2] = i;
726
		memcpy(buf + 3, img + i * chunk_len, chunk_len);
727

728
		retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
729
					  buf, chunk_len + 3, WAC_CMD_RETRIES);
730 731 732 733 734 735 736
		if (retval < 0)
			break;
	}

	/* Send 'stop' */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 0;
737 738
	wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
			 WAC_CMD_RETRIES);
739 740 741 742 743 744

out:
	kfree(buf);
	return retval;
}

745
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
746 747
				      const char *buf, size_t count)
{
G
Geliang Tang 已提交
748
	struct hid_device *hdev = to_hid_device(dev);
749
	struct wacom *wacom = hid_get_drvdata(hdev);
750 751 752 753 754 755 756 757 758
	unsigned int id;
	int err;

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

	mutex_lock(&wacom->lock);

759
	wacom->led.groups[set_id].select = id & 0x3;
760 761 762 763 764 765 766
	err = wacom_led_control(wacom);

	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

767 768 769 770 771 772
#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);		\
}									\
773 774 775
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,	\
	struct device_attribute *attr, char *buf)			\
{									\
G
Geliang Tang 已提交
776
	struct hid_device *hdev = to_hid_device(dev);\
777
	struct wacom *wacom = hid_get_drvdata(hdev);			\
P
Ping Cheng 已提交
778
	return scnprintf(buf, PAGE_SIZE, "%d\n",			\
779
			 wacom->led.groups[SET_ID].select);		\
780
}									\
781
static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,	\
782
		    wacom_led##SET_ID##_select_show,			\
783 784 785 786
		    wacom_led##SET_ID##_select_store)

DEVICE_LED_SELECT_ATTR(0);
DEVICE_LED_SELECT_ATTR(1);
787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811

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
812
	struct hid_device *hdev = to_hid_device(dev);\
813
	struct wacom *wacom = hid_get_drvdata(hdev);			\
814 815 816 817
									\
	return wacom_luminance_store(wacom, &wacom->led.field,		\
				     buf, count);			\
}									\
P
Ping Cheng 已提交
818 819 820 821 822 823
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);	\
}									\
824
static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,			\
P
Ping Cheng 已提交
825 826
		   wacom_##name##_luminance_show,			\
		   wacom_##name##_luminance_store)
827 828 829 830 831 832 833 834

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
835
	struct hid_device *hdev = to_hid_device(dev);
836
	struct wacom *wacom = hid_get_drvdata(hdev);
837
	int err;
838 839 840 841 842 843 844 845 846 847
	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;
	}
848

849
	if (count != len)
850 851 852 853
		return -EINVAL;

	mutex_lock(&wacom->lock);

854
	err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
855 856 857 858 859 860 861 862 863 864 865 866

	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);	\
}									\
867
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,	\
868 869 870 871 872 873 874 875 876 877 878
		   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);

879 880 881 882 883 884 885 886 887 888 889 890
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[] = {
891 892
	&dev_attr_status0_luminance.attr,
	&dev_attr_status1_luminance.attr,
893
	&dev_attr_status_led0_select.attr,
894 895 896 897 898 899 900 901 902 903 904 905
	&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
};

906
static struct attribute_group intuos4_led_attr_group = {
907
	.name = "wacom_led",
908
	.attrs = intuos4_led_attrs,
909 910
};

911 912 913 914 915 916 917 918 919 920 921
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,
};

922 923 924 925 926 927 928 929 930 931 932 933 934 935 936
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);
}

937 938 939
static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
					   struct kobject *root,
					   struct attribute_group *group)
940 941 942 943 944 945 946 947 948 949 950
{
	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;
951
	devres->root = root;
952 953 954 955 956 957 958 959 960 961

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

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

	return 0;
}

962 963 964 965 966 967 968
static int wacom_devm_sysfs_create_group(struct wacom *wacom,
					 struct attribute_group *group)
{
	return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,
					       group);
}

969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
static void wacom_led_groups_release(void *data)
{
	struct wacom *wacom = data;

	wacom->led.groups = NULL;
}

static int wacom_led_groups_allocate(struct wacom *wacom, int count)
{
	struct wacom_group_leds *groups;
	int error;

	groups = devm_kzalloc(&wacom->hdev->dev,
			      sizeof(struct wacom_group_leds) * count,
			      GFP_KERNEL);
	if (!groups)
		return -ENOMEM;

	error = devm_add_action_or_reset(&wacom->hdev->dev,
					 wacom_led_groups_release,
					 wacom);
	if (error)
		return error;

	wacom->led.groups = groups;

	return 0;
}

998 999 1000 1001
static int wacom_initialize_leds(struct wacom *wacom)
{
	int error;

1002 1003 1004
	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return 0;

1005 1006
	/* Initialize default values */
	switch (wacom->wacom_wac.features.type) {
1007
	case INTUOS4S:
1008
	case INTUOS4:
1009
	case INTUOS4WL:
1010
	case INTUOS4L:
1011
		wacom->led.llv = 10;
1012 1013
		wacom->led.hlv = 20;
		wacom->led.img_lum = 10;
1014 1015 1016 1017 1018 1019 1020 1021

		error = wacom_led_groups_allocate(wacom, 1);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

1022 1023
		error = wacom_devm_sysfs_create_group(wacom,
						      &intuos4_led_attr_group);
1024 1025
		break;

1026
	case WACOM_24HD:
1027 1028 1029 1030
	case WACOM_21UX2:
		wacom->led.llv = 0;
		wacom->led.hlv = 0;
		wacom->led.img_lum = 0;
1031

1032 1033 1034 1035 1036 1037 1038
		error = wacom_led_groups_allocate(wacom, 2);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

1039 1040
		error = wacom_devm_sysfs_create_group(wacom,
						      &cintiq_led_attr_group);
1041 1042
		break;

1043 1044 1045
	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
1046 1047 1048
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
1049 1050 1051 1052
		wacom->led.llv = 32;
		wacom->led.hlv = 0;
		wacom->led.img_lum = 0;

1053 1054 1055 1056 1057 1058 1059
		error = wacom_led_groups_allocate(wacom, 1);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}

1060 1061
		error = wacom_devm_sysfs_create_group(wacom,
						      &intuos5_led_attr_group);
1062 1063
		break;

1064 1065 1066 1067 1068 1069 1070 1071 1072
	case REMOTE:
		error = wacom_led_groups_allocate(wacom, 5);
		if (error) {
			hid_err(wacom->hdev,
				"cannot create leds err: %d\n", error);
			return error;
		}
		return 0;

1073 1074
	default:
		return 0;
1075 1076
	}

1077
	if (error) {
1078
		hid_err(wacom->hdev,
1079 1080 1081 1082 1083
			"cannot create sysfs group err: %d\n", error);
		return error;
	}
	wacom_led_control(wacom);

1084 1085 1086
	return 0;
}

1087
static enum power_supply_property wacom_battery_props[] = {
1088
	POWER_SUPPLY_PROP_PRESENT,
1089
	POWER_SUPPLY_PROP_STATUS,
1090
	POWER_SUPPLY_PROP_SCOPE,
1091 1092 1093
	POWER_SUPPLY_PROP_CAPACITY
};

1094 1095 1096 1097 1098 1099
static enum power_supply_property wacom_ac_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_SCOPE,
};

1100 1101 1102 1103
static int wacom_battery_get_property(struct power_supply *psy,
				      enum power_supply_property psp,
				      union power_supply_propval *val)
{
1104
	struct wacom_battery *battery = power_supply_get_drvdata(psy);
1105 1106 1107
	int ret = 0;

	switch (psp) {
1108
		case POWER_SUPPLY_PROP_PRESENT:
1109
			val->intval = battery->bat_connected;
1110
			break;
1111 1112 1113
		case POWER_SUPPLY_PROP_SCOPE:
			val->intval = POWER_SUPPLY_SCOPE_DEVICE;
			break;
1114
		case POWER_SUPPLY_PROP_CAPACITY:
1115
			val->intval = battery->battery_capacity;
1116 1117
			break;
		case POWER_SUPPLY_PROP_STATUS:
1118
			if (battery->bat_charging)
1119
				val->intval = POWER_SUPPLY_STATUS_CHARGING;
1120 1121
			else if (battery->battery_capacity == 100 &&
				    battery->ps_connected)
1122
				val->intval = POWER_SUPPLY_STATUS_FULL;
1123
			else if (battery->ps_connected)
1124
				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1125 1126
			else
				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1127 1128 1129 1130 1131 1132 1133 1134 1135
			break;
		default:
			ret = -EINVAL;
			break;
	}

	return ret;
}

1136 1137 1138 1139
static int wacom_ac_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
1140
	struct wacom_battery *battery = power_supply_get_drvdata(psy);
1141 1142 1143 1144 1145 1146
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_PRESENT:
		/* fall through */
	case POWER_SUPPLY_PROP_ONLINE:
1147
		val->intval = battery->ps_connected;
1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158
		break;
	case POWER_SUPPLY_PROP_SCOPE:
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

1159 1160
static int __wacom_initialize_battery(struct wacom *wacom,
				      struct wacom_battery *battery)
1161
{
1162
	static atomic_t battery_no = ATOMIC_INIT(0);
1163
	struct device *dev = &wacom->hdev->dev;
1164 1165 1166 1167
	struct power_supply_config psy_cfg = { .drv_data = battery, };
	struct power_supply *ps_bat, *ps_ac;
	struct power_supply_desc *bat_desc = &battery->bat_desc;
	struct power_supply_desc *ac_desc = &battery->ac_desc;
1168
	unsigned long n;
1169 1170 1171 1172
	int error;

	if (!devres_open_group(dev, bat_desc, GFP_KERNEL))
		return -ENOMEM;
1173

1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
	n = atomic_inc_return(&battery_no) - 1;

	bat_desc->properties = wacom_battery_props;
	bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
	bat_desc->get_property = wacom_battery_get_property;
	sprintf(battery->bat_name, "wacom_battery_%ld", n);
	bat_desc->name = battery->bat_name;
	bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
	bat_desc->use_for_apm = 0;

	ac_desc->properties = wacom_ac_props;
	ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
	ac_desc->get_property = wacom_ac_get_property;
	sprintf(battery->ac_name, "wacom_ac_%ld", n);
	ac_desc->name = battery->ac_name;
	ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
	ac_desc->use_for_apm = 0;

	ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg);
	if (IS_ERR(ps_bat)) {
		error = PTR_ERR(ps_bat);
		goto err;
	}
1197

1198 1199 1200 1201 1202
	ps_ac = devm_power_supply_register(dev, ac_desc, &psy_cfg);
	if (IS_ERR(ps_ac)) {
		error = PTR_ERR(ps_ac);
		goto err;
	}
1203

1204 1205
	power_supply_powers(ps_bat, &wacom->hdev->dev);
	power_supply_powers(ps_ac, &wacom->hdev->dev);
1206

1207 1208
	battery->battery = ps_bat;
	battery->ac = ps_ac;
1209

1210
	devres_close_group(dev, bat_desc);
1211
	return 0;
1212 1213 1214 1215

err:
	devres_release_group(dev, bat_desc);
	return error;
1216 1217
}

1218 1219 1220 1221 1222 1223 1224 1225
static int wacom_initialize_battery(struct wacom *wacom)
{
	if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY)
		return __wacom_initialize_battery(wacom, &wacom->battery);

	return 0;
}

1226 1227
static void wacom_destroy_battery(struct wacom *wacom)
{
1228 1229 1230 1231 1232
	if (wacom->battery.battery) {
		devres_release_group(&wacom->hdev->dev,
				     &wacom->battery.bat_desc);
		wacom->battery.battery = NULL;
		wacom->battery.ac = NULL;
1233
	}
1234 1235
}

1236 1237 1238 1239
static ssize_t wacom_show_speed(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
G
Geliang Tang 已提交
1240
	struct hid_device *hdev = to_hid_device(dev);
1241 1242 1243 1244 1245 1246 1247 1248 1249
	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
1250
	struct hid_device *hdev = to_hid_device(dev);
1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
	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;
}

1265
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1266 1267
		wacom_show_speed, wacom_store_speed);

1268 1269 1270 1271 1272

static ssize_t wacom_show_remote_mode(struct kobject *kobj,
				      struct kobj_attribute *kattr,
				      char *buf, int index)
{
G
Geliang Tang 已提交
1273
	struct device *dev = kobj_to_dev(kobj->parent);
G
Geliang Tang 已提交
1274
	struct hid_device *hdev = to_hid_device(dev);
1275 1276 1277
	struct wacom *wacom = hid_get_drvdata(hdev);
	u8 mode;

1278
	mode = wacom->led.groups[index].select;
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 1304 1305 1306 1307 1308 1309 1310
	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);

1311 1312
static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
					  int index)
1313 1314
{
	int error = 0;
1315
	struct wacom_remote *remote = wacom->remote;
1316

1317
	remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev,
1318 1319
							  GFP_KERNEL,
							  "%d", serial);
1320
	if (!remote->remotes[index].group.name)
1321 1322
		return -ENOMEM;

1323
	error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir,
1324
						&remote->remotes[index].group);
1325
	if (error) {
1326
		remote->remotes[index].group.name = NULL;
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
		hid_err(wacom->hdev,
			"cannot create sysfs group err: %d\n", error);
		return error;
	}

	return 0;
}

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
1360
	struct device *dev = kobj_to_dev(kobj->parent);
G
Geliang Tang 已提交
1361
	struct hid_device *hdev = to_hid_device(dev);
1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
	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
};

1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
static void wacom_remotes_destroy(void *data)
{
	struct wacom *wacom = data;
	struct wacom_remote *remote = wacom->remote;

	if (!remote)
		return;

	kobject_put(remote->remote_dir);
	kfifo_free(&remote->remote_fifo);
	wacom->remote = NULL;
}

static int wacom_initialize_remotes(struct wacom *wacom)
1405 1406
{
	int error = 0;
1407
	struct wacom_remote *remote;
1408 1409 1410 1411 1412
	int i;

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

1413 1414 1415 1416
	remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote),
			      GFP_KERNEL);
	if (!remote)
		return -ENOMEM;
1417

1418 1419 1420 1421 1422 1423 1424 1425 1426
	wacom->remote = remote;

	spin_lock_init(&remote->remote_lock);

	error = kfifo_alloc(&remote->remote_fifo,
			5 * sizeof(struct wacom_remote_data),
			GFP_KERNEL);
	if (error) {
		hid_err(wacom->hdev, "failed allocating remote_fifo\n");
1427
		return -ENOMEM;
1428
	}
1429

1430 1431 1432 1433 1434
	remote->remotes[0].group = remote0_serial_group;
	remote->remotes[1].group = remote1_serial_group;
	remote->remotes[2].group = remote2_serial_group;
	remote->remotes[3].group = remote3_serial_group;
	remote->remotes[4].group = remote4_serial_group;
1435 1436 1437 1438 1439 1440 1441

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

	error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs);
1442 1443 1444 1445 1446 1447 1448 1449

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

	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1450
		wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
1451
		remote->remotes[i].serial = 0;
1452 1453
	}

1454 1455 1456 1457 1458
	error = devm_add_action_or_reset(&wacom->hdev->dev,
					 wacom_remotes_destroy, wacom);
	if (error)
		return error;

1459 1460 1461
	return 0;
}

1462
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1463 1464
{
	struct input_dev *input_dev;
1465
	struct hid_device *hdev = wacom->hdev;
1466 1467
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

1468
	input_dev = devm_input_allocate_device(&hdev->dev);
1469 1470
	if (!input_dev)
		return NULL;
1471

1472
	input_dev->name = wacom_wac->features.name;
1473 1474
	input_dev->phys = hdev->phys;
	input_dev->dev.parent = &hdev->dev;
1475 1476
	input_dev->open = wacom_open;
	input_dev->close = wacom_close;
1477 1478 1479
	input_dev->uniq = hdev->uniq;
	input_dev->id.bustype = hdev->bus;
	input_dev->id.vendor  = hdev->vendor;
1480
	input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1481
	input_dev->id.version = hdev->version;
1482 1483
	input_set_drvdata(input_dev, wacom);

1484 1485 1486
	return input_dev;
}

1487 1488 1489 1490 1491 1492 1493
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);
1494 1495 1496
	if (!wacom_wac->pen_input ||
	    !wacom_wac->touch_input ||
	    !wacom_wac->pad_input)
1497 1498
		return -ENOMEM;

1499
	wacom_wac->pen_input->name = wacom_wac->pen_name;
1500 1501 1502 1503 1504 1505
	wacom_wac->touch_input->name = wacom_wac->touch_name;
	wacom_wac->pad_input->name = wacom_wac->pad_name;

	return 0;
}

1506 1507
static int wacom_register_inputs(struct wacom *wacom)
{
1508
	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1509
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1510
	int error = 0;
1511

1512 1513
	pen_input_dev = wacom_wac->pen_input;
	touch_input_dev = wacom_wac->touch_input;
1514 1515
	pad_input_dev = wacom_wac->pad_input;

1516
	if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1517 1518
		return -EINVAL;

1519 1520 1521 1522 1523 1524 1525 1526 1527
	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)
1528
			goto fail;
1529 1530 1531 1532 1533 1534 1535 1536 1537 1538
	}

	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);
1539
		if (error)
1540
			goto fail;
1541
	}
1542

1543 1544 1545 1546 1547 1548 1549 1550 1551
	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)
1552
			goto fail;
1553 1554
	}

1555
	return 0;
1556

1557 1558
fail:
	wacom_wac->pad_input = NULL;
1559 1560
	wacom_wac->touch_input = NULL;
	wacom_wac->pen_input = NULL;
1561 1562 1563
	return error;
}

1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596
/*
 * 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);
}

1597 1598
void wacom_battery_work(struct work_struct *work)
{
1599
	struct wacom *wacom = container_of(work, struct wacom, battery_work);
1600 1601

	if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1602
	     !wacom->battery.battery) {
1603 1604 1605
		wacom_initialize_battery(wacom);
	}
	else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1606
		 wacom->battery.battery) {
1607 1608 1609 1610
		wacom_destroy_battery(wacom);
	}
}

1611 1612 1613 1614 1615 1616 1617 1618 1619
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) {
1620
		size_t report_size = hid_report_len(report);
1621 1622 1623 1624 1625 1626 1627
		if (report_size > size)
			size = report_size;
	}

	return size;
}

1628
static void wacom_update_name(struct wacom *wacom, const char *suffix)
1629 1630 1631
{
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
1632
	char name[WACOM_NAME_MAX];
1633 1634 1635 1636 1637 1638 1639

	/* 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 */
1640
			strlcpy(name, wacom->hdev->name, sizeof(name));
1641 1642 1643

			/* strip out excess whitespaces */
			while (1) {
1644
				char *gap = strstr(name, "  ");
1645 1646 1647 1648 1649 1650
				if (gap == NULL)
					break;
				/* shift everything including the terminator */
				memmove(gap, gap+1, strlen(gap));
			}
			/* get rid of trailing whitespace */
1651 1652
			if (name[strlen(name)-1] == ' ')
				name[strlen(name)-1] = '\0';
1653 1654
		} else {
			/* no meaningful name retrieved. use product ID */
1655
			snprintf(name, sizeof(name),
1656 1657 1658
				 "%s %X", features->name, wacom->hdev->product);
		}
	} else {
1659
		strlcpy(name, features->name, sizeof(name));
1660 1661 1662
	}

	/* Append the device type to the name */
1663
	snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1664
		"%s%s Pen", name, suffix);
1665
	snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1666
		"%s%s Finger", name, suffix);
1667
	snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1668
		"%s%s Pad", name, suffix);
1669 1670
}

1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
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;
}

1687
static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
1688
{
1689 1690 1691
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
	struct hid_device *hdev = wacom->hdev;
1692
	int error;
1693
	unsigned int connect_mask = HID_CONNECT_HIDRAW;
1694

1695
	features->pktlen = wacom_compute_pktlen(hdev);
1696 1697
	if (features->pktlen > WACOM_PKGLEN_MAX)
		return -EINVAL;
1698

1699 1700 1701 1702 1703
	if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL))
		return -ENOMEM;

	wacom->resources = true;

1704 1705
	error = wacom_allocate_inputs(wacom);
	if (error)
1706
		goto fail;
1707

1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718
	/*
	 * 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;
1719
			goto fail;
1720 1721 1722
		}
	}

1723 1724 1725
	/* set the default size in case we do not get them from hid */
	wacom_set_default_phy(features);

1726
	/* Retrieve the physical and logical size for touch devices */
1727
	wacom_retrieve_hid_descriptor(hdev, features);
1728
	wacom_setup_device_quirks(wacom);
1729

1730 1731
	if (features->device_type == WACOM_DEVICETYPE_NONE &&
	    features->type != WIRELESS) {
1732 1733
		error = features->type == HID_GENERIC ? -ENODEV : 0;

1734
		dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1735 1736 1737 1738
			 hdev->name,
			 error ? "Ignoring" : "Assuming pen");

		if (error)
1739
			goto fail;
1740

1741
		features->device_type |= WACOM_DEVICETYPE_PEN;
1742 1743
	}

1744 1745
	wacom_calculate_res(features);

1746
	wacom_update_name(wacom, wireless ? " (WL)" : "");
1747

1748 1749
	error = wacom_add_shared_data(hdev);
	if (error)
1750
		goto fail;
1751

1752
	if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1753 1754 1755
	     (features->quirks & WACOM_QUIRK_BATTERY)) {
		error = wacom_initialize_battery(wacom);
		if (error)
1756
			goto fail;
1757 1758
	}

1759 1760
	error = wacom_register_inputs(wacom);
	if (error)
1761
		goto fail;
1762

1763
	if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) {
1764 1765
		error = wacom_initialize_leds(wacom);
		if (error)
1766
			goto fail;
1767

1768
		error = wacom_initialize_remotes(wacom);
1769
		if (error)
1770
			goto fail;
1771 1772
	}

1773 1774 1775
	if (features->type == HID_GENERIC)
		connect_mask |= HID_CONNECT_DRIVER;

1776
	/* Regular HID work starts now */
1777
	error = hid_hw_start(hdev, connect_mask);
1778 1779
	if (error) {
		hid_err(hdev, "hw start failed\n");
1780
		goto fail;
1781
	}
1782

1783 1784 1785 1786
	if (!wireless) {
		/* Note that if query fails it is not a hard failure */
		wacom_query_tablet_data(hdev, features);
	}
1787 1788 1789 1790 1791

	/* touch only Bamboo doesn't support pen */
	if ((features->type == BAMBOO_TOUCH) &&
	    (features->device_type & WACOM_DEVICETYPE_PEN)) {
		error = -ENODEV;
1792
		goto fail_quirks;
1793 1794 1795 1796 1797 1798 1799
	}

	/* 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;
1800
		goto fail_quirks;
1801 1802
	}

1803
	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1804 1805
		error = hid_hw_open(hdev);

1806
	if ((wacom_wac->features.type == INTUOSHT ||
1807
	     wacom_wac->features.type == INTUOSHT2) &&
1808
	    (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1809 1810
		wacom_wac->shared->type = wacom_wac->features.type;
		wacom_wac->shared->touch_input = wacom_wac->touch_input;
1811 1812
	}

1813 1814
	devres_close_group(&hdev->dev, wacom);

1815 1816
	return 0;

1817
fail_quirks:
1818
	hid_hw_stop(hdev);
1819
fail:
1820
	wacom_release_resources(wacom);
1821 1822 1823
	return error;
}

1824 1825
static void wacom_wireless_work(struct work_struct *work)
{
1826
	struct wacom *wacom = container_of(work, struct wacom, wireless_work);
1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
	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);
1845
	wacom_release_resources(wacom1);
1846 1847 1848 1849 1850

	/* Touch interface */
	hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
	wacom2 = hid_get_drvdata(hdev2);
	wacom_wac2 = &(wacom2->wacom_wac);
1851
	wacom_release_resources(wacom2);
1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875

	if (wacom_wac->pid == 0) {
		hid_info(wacom->hdev, "wireless tablet disconnected\n");
	} 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);
1876

1877
		wacom_wac1->pid = wacom_wac->pid;
1878 1879
		hid_hw_stop(hdev1);
		error = wacom_parse_and_register(wacom1, true);
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889
		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;
1890 1891
			hid_hw_stop(hdev2);
			error = wacom_parse_and_register(wacom2, true);
1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903
			if (error)
				goto fail;
		}

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

	return;

fail:
1904 1905
	wacom_release_resources(wacom1);
	wacom_release_resources(wacom2);
1906 1907 1908
	return;
}

1909 1910 1911
static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index)
{
	struct wacom_remote *remote = wacom->remote;
1912
	u32 serial = remote->remotes[index].serial;
1913
	int i;
1914 1915 1916 1917 1918
	unsigned long flags;

	spin_lock_irqsave(&remote->remote_lock, flags);
	remote->remotes[index].registered = false;
	spin_unlock_irqrestore(&remote->remote_lock, flags);
1919

1920 1921 1922 1923
	if (remote->remotes[index].battery.battery)
		devres_release_group(&wacom->hdev->dev,
				     &remote->remotes[index].battery.bat_desc);

1924 1925 1926
	if (remote->remotes[index].group.name)
		devres_release_group(&wacom->hdev->dev,
				     &remote->remotes[index]);
1927 1928

	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
1929 1930 1931
		if (remote->remotes[i].serial == serial) {
			remote->remotes[i].serial = 0;
			remote->remotes[i].group.name = NULL;
1932
			remote->remotes[i].registered = false;
1933
			remote->remotes[i].battery.battery = NULL;
1934 1935 1936 1937 1938 1939 1940 1941 1942
			wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN;
		}
	}
}

static int wacom_remote_create_one(struct wacom *wacom, u32 serial,
				   unsigned int index)
{
	struct wacom_remote *remote = wacom->remote;
1943
	struct device *dev = &wacom->hdev->dev;
1944 1945 1946 1947 1948 1949
	int error, k;

	/* A remote can pair more than once with an EKR,
	 * check to make sure this serial isn't already paired.
	 */
	for (k = 0; k < WACOM_MAX_REMOTES; k++) {
1950
		if (remote->remotes[k].serial == serial)
1951 1952 1953 1954
			break;
	}

	if (k < WACOM_MAX_REMOTES) {
1955
		remote->remotes[index].serial = serial;
1956 1957 1958
		return 0;
	}

1959
	if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL))
1960 1961
		return -ENOMEM;

1962 1963
	error = wacom_remote_create_attr_group(wacom, serial, index);
	if (error)
1964
		goto fail;
1965

1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983
	remote->remotes[index].input = wacom_allocate_input(wacom);
	if (!remote->remotes[index].input) {
		error = -ENOMEM;
		goto fail;
	}
	remote->remotes[index].input->uniq = remote->remotes[index].group.name;
	remote->remotes[index].input->name = wacom->wacom_wac.pad_name;

	if (!remote->remotes[index].input->name) {
		error = -EINVAL;
		goto fail;
	}

	error = wacom_setup_pad_input_capabilities(remote->remotes[index].input,
						   &wacom->wacom_wac);
	if (error)
		goto fail;

1984
	remote->remotes[index].serial = serial;
1985

1986 1987 1988 1989 1990 1991
	error = input_register_device(remote->remotes[index].input);
	if (error)
		goto fail;

	remote->remotes[index].registered = true;

1992
	devres_close_group(dev, &remote->remotes[index]);
1993
	return 0;
1994 1995

fail:
1996 1997
	devres_release_group(dev, &remote->remotes[index]);
	remote->remotes[index].serial = 0;
1998
	return error;
1999 2000
}

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
static int wacom_remote_attach_battery(struct wacom *wacom, int index)
{
	struct wacom_remote *remote = wacom->remote;
	int error;

	if (!remote->remotes[index].registered)
		return 0;

	if (remote->remotes[index].battery.battery)
		return 0;

	if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN)
		return 0;

	error = __wacom_initialize_battery(wacom,
					&wacom->remote->remotes[index].battery);
	if (error)
		return error;

	return 0;
}

2023 2024 2025
static void wacom_remote_work(struct work_struct *work)
{
	struct wacom *wacom = container_of(work, struct wacom, remote_work);
2026
	struct wacom_remote *remote = wacom->remote;
2027 2028 2029 2030
	struct wacom_remote_data data;
	unsigned long flags;
	unsigned int count;
	u32 serial;
2031
	int i;
2032

2033
	spin_lock_irqsave(&remote->remote_lock, flags);
2034

2035
	count = kfifo_out(&remote->remote_fifo, &data, sizeof(data));
2036 2037 2038 2039

	if (count != sizeof(data)) {
		hid_err(wacom->hdev,
			"workitem triggered without status available\n");
2040
		spin_unlock_irqrestore(&remote->remote_lock, flags);
2041 2042 2043
		return;
	}

2044
	if (!kfifo_is_empty(&remote->remote_fifo))
2045 2046
		wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE);

2047
	spin_unlock_irqrestore(&remote->remote_lock, flags);
2048 2049 2050 2051 2052

	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
		serial = data.remote[i].serial;
		if (data.remote[i].connected) {

2053 2054
			if (remote->remotes[i].serial == serial) {
				wacom_remote_attach_battery(wacom, i);
2055
				continue;
2056
			}
2057

2058
			if (remote->remotes[i].serial)
2059
				wacom_remote_destroy_one(wacom, i);
2060

2061
			wacom_remote_create_one(wacom, serial, i);
2062

2063
		} else if (remote->remotes[i].serial) {
2064
			wacom_remote_destroy_one(wacom, i);
2065 2066 2067 2068
		}
	}
}

2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086
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;

2087
	wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL);
2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099
	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;
2100
		goto fail;
2101 2102
	}

2103
	wacom_wac->hid_data.inputmode = -1;
2104
	wacom_wac->mode_report = -1;
2105

2106 2107 2108
	wacom->usbdev = dev;
	wacom->intf = intf;
	mutex_init(&wacom->lock);
2109 2110
	INIT_WORK(&wacom->wireless_work, wacom_wireless_work);
	INIT_WORK(&wacom->battery_work, wacom_battery_work);
2111
	INIT_WORK(&wacom->remote_work, wacom_remote_work);
2112 2113 2114 2115 2116

	/* ask for the report descriptor to be loaded by HID */
	error = hid_parse(hdev);
	if (error) {
		hid_err(hdev, "parse failed\n");
2117
		goto fail;
2118 2119
	}

2120
	error = wacom_parse_and_register(wacom, false);
2121
	if (error)
2122
		goto fail;
2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133

	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;

2134
fail:
2135
	hid_set_drvdata(hdev, NULL);
2136
	return error;
2137 2138
}

2139
static void wacom_remove(struct hid_device *hdev)
2140
{
2141
	struct wacom *wacom = hid_get_drvdata(hdev);
2142 2143 2144 2145 2146
	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);
2147

2148
	hid_hw_stop(hdev);
2149

2150 2151
	cancel_work_sync(&wacom->wireless_work);
	cancel_work_sync(&wacom->battery_work);
2152
	cancel_work_sync(&wacom->remote_work);
2153 2154
	if (hdev->bus == BUS_BLUETOOTH)
		device_remove_file(&hdev->dev, &dev_attr_speed);
2155

2156
	hid_set_drvdata(hdev, NULL);
2157 2158
}

2159
#ifdef CONFIG_PM
2160
static int wacom_resume(struct hid_device *hdev)
2161
{
2162
	struct wacom *wacom = hid_get_drvdata(hdev);
2163
	struct wacom_features *features = &wacom->wacom_wac.features;
2164 2165

	mutex_lock(&wacom->lock);
2166 2167

	/* switch to wacom mode first */
2168
	wacom_query_tablet_data(hdev, features);
2169
	wacom_led_control(wacom);
2170

2171 2172
	mutex_unlock(&wacom->lock);

2173
	return 0;
2174 2175
}

2176
static int wacom_reset_resume(struct hid_device *hdev)
2177
{
2178
	return wacom_resume(hdev);
2179
}
2180
#endif /* CONFIG_PM */
2181

2182
static struct hid_driver wacom_driver = {
2183
	.name =		"wacom",
2184
	.id_table =	wacom_ids,
2185
	.probe =	wacom_probe,
2186
	.remove =	wacom_remove,
2187
	.report =	wacom_wac_report,
2188
#ifdef CONFIG_PM
2189 2190
	.resume =	wacom_resume,
	.reset_resume =	wacom_reset_resume,
2191 2192
#endif
	.raw_event =	wacom_raw_event,
2193
};
2194
module_hid_driver(wacom_driver);
2195 2196 2197 2198 2199

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