wacom_sys.c 43.5 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 DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)

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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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	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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	}
}

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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.
	 */
	if (features->type != BAMBOO_PT) {
		/* 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;
			if (features->type != BAMBOO_PT) {
				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;
			if (features->type != BAMBOO_PT) {
				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) {
			input_mt_init_slots(wacom_wac->input, wacom_wac->features.touch_max,
				    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, int report_id,
		int length, int mode)
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{
	unsigned char *rep_data;
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	int error = -ENOMEM, limit = 0;
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	rep_data = kzalloc(length, GFP_KERNEL);
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	if (!rep_data)
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		return error;

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	do {
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		rep_data[0] = report_id;
		rep_data[1] = mode;

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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] != mode) && limit++ < WAC_MSG_RETRIES);

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

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

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	if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
P
Ping Cheng 已提交
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		if (features->type > TABLETPC) {
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			/* MT Tablet PC touch */
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			return wacom_set_device_mode(hdev, 3, 4, 4);
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		}
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		else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
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			return wacom_set_device_mode(hdev, 18, 3, 2);
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		}
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		else if (features->type == WACOM_27QHDT) {
			return wacom_set_device_mode(hdev, 131, 3, 2);
		}
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		else if (features->type == BAMBOO_PAD) {
			return wacom_set_device_mode(hdev, 2, 2, 2);
		}
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	} else if (features->device_type & WACOM_DEVICETYPE_PEN) {
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		if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
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			return wacom_set_device_mode(hdev, 2, 2, 2);
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		}
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	}
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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)
439
{
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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;
	features->distance_fuzz = 0;
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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) {
		if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
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			features->device_type = WACOM_DEVICETYPE_NONE;
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		} else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
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			features->device_type |= WACOM_DEVICETYPE_TOUCH;
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			features->pktlen = WACOM_PKGLEN_BBTOUCH3;
		}
	}

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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);
}

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static void wacom_remove_shared_data(struct wacom *wacom)
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{
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	struct wacom_hdev_data *data;
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	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;
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		kref_put(&data->kref, wacom_release_shared_data);
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		wacom_wac->shared = NULL;
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	}
}

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static int wacom_led_control(struct wacom *wacom)
{
	unsigned char *buf;
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	int retval;
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	unsigned char report_id = WAC_CMD_LED_CONTROL;
	int buf_size = 9;
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	if (wacom->wacom_wac.pid) { /* wireless connected */
		report_id = WAC_CMD_WL_LED_CONTROL;
		buf_size = 13;
	}
	buf = kzalloc(buf_size, GFP_KERNEL);
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	if (!buf)
		return -ENOMEM;

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	if (wacom->wacom_wac.features.type >= INTUOS5S &&
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	    wacom->wacom_wac.features.type <= INTUOSPL) {
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		/*
		 * 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;
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		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;
617 618 619 620 621 622 623 624
	}
	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;

625
		buf[0] = report_id;
626 627 628 629 630
		buf[1] = led;
		buf[2] = wacom->led.llv;
		buf[3] = wacom->led.hlv;
		buf[4] = wacom->led.img_lum;
	}
631

632
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
633
				  WAC_CMD_RETRIES);
634 635 636 637 638
	kfree(buf);

	return retval;
}

639 640
static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
		const unsigned len, const void *img)
641 642 643
{
	unsigned char *buf;
	int i, retval;
644
	const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
645

646
	buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
647 648 649 650 651 652
	if (!buf)
		return -ENOMEM;

	/* Send 'start' command */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 1;
653 654
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
				  WAC_CMD_RETRIES);
655 656 657
	if (retval < 0)
		goto out;

658
	buf[0] = xfer_id;
659 660 661
	buf[1] = button_id & 0x07;
	for (i = 0; i < 4; i++) {
		buf[2] = i;
662
		memcpy(buf + 3, img + i * chunk_len, chunk_len);
663

664
		retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
665
					  buf, chunk_len + 3, WAC_CMD_RETRIES);
666 667 668 669 670 671 672
		if (retval < 0)
			break;
	}

	/* Send 'stop' */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 0;
673 674
	wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
			 WAC_CMD_RETRIES);
675 676 677 678 679 680

out:
	kfree(buf);
	return retval;
}

681
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
682 683
				      const char *buf, size_t count)
{
684
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
685
	struct wacom *wacom = hid_get_drvdata(hdev);
686 687 688 689 690 691 692 693 694
	unsigned int id;
	int err;

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

	mutex_lock(&wacom->lock);

695
	wacom->led.select[set_id] = id & 0x3;
696 697 698 699 700 701 702
	err = wacom_led_control(wacom);

	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

703 704 705 706 707 708
#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);		\
}									\
709 710 711
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,	\
	struct device_attribute *attr, char *buf)			\
{									\
712
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
713
	struct wacom *wacom = hid_get_drvdata(hdev);			\
P
Ping Cheng 已提交
714 715
	return scnprintf(buf, PAGE_SIZE, "%d\n",			\
			 wacom->led.select[SET_ID]);			\
716
}									\
717
static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,	\
718
		    wacom_led##SET_ID##_select_show,			\
719 720 721 722
		    wacom_led##SET_ID##_select_store)

DEVICE_LED_SELECT_ATTR(0);
DEVICE_LED_SELECT_ATTR(1);
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747

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)	\
{									\
748
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
749
	struct wacom *wacom = hid_get_drvdata(hdev);			\
750 751 752 753
									\
	return wacom_luminance_store(wacom, &wacom->led.field,		\
				     buf, count);			\
}									\
P
Ping Cheng 已提交
754 755 756 757 758 759
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);	\
}									\
760
static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,			\
P
Ping Cheng 已提交
761 762
		   wacom_##name##_luminance_show,			\
		   wacom_##name##_luminance_store)
763 764 765 766 767 768 769 770

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)
{
771
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
772
	struct wacom *wacom = hid_get_drvdata(hdev);
773
	int err;
774 775 776 777 778 779 780 781 782 783
	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;
	}
784

785
	if (count != len)
786 787 788 789
		return -EINVAL;

	mutex_lock(&wacom->lock);

790
	err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
791 792 793 794 795 796 797 798 799 800 801 802

	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);	\
}									\
803
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,	\
804 805 806 807 808 809 810 811 812 813 814
		   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);

815 816 817 818 819 820 821 822 823 824 825 826
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[] = {
827 828
	&dev_attr_status0_luminance.attr,
	&dev_attr_status1_luminance.attr,
829
	&dev_attr_status_led0_select.attr,
830 831 832 833 834 835 836 837 838 839 840 841
	&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
};

842
static struct attribute_group intuos4_led_attr_group = {
843
	.name = "wacom_led",
844
	.attrs = intuos4_led_attrs,
845 846
};

847 848 849 850 851 852 853 854 855 856 857
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,
};

858 859 860 861
static int wacom_initialize_leds(struct wacom *wacom)
{
	int error;

862 863 864
	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return 0;

865 866
	/* Initialize default values */
	switch (wacom->wacom_wac.features.type) {
867
	case INTUOS4S:
868
	case INTUOS4:
869
	case INTUOS4WL:
870 871 872
	case INTUOS4L:
		wacom->led.select[0] = 0;
		wacom->led.select[1] = 0;
873
		wacom->led.llv = 10;
874 875
		wacom->led.hlv = 20;
		wacom->led.img_lum = 10;
876
		error = sysfs_create_group(&wacom->hdev->dev.kobj,
877 878 879
					   &intuos4_led_attr_group);
		break;

880
	case WACOM_24HD:
881 882 883 884 885 886
	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;
887

888
		error = sysfs_create_group(&wacom->hdev->dev.kobj,
889 890 891
					   &cintiq_led_attr_group);
		break;

892 893 894
	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
895 896 897
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
898 899 900 901 902 903 904 905
		wacom->led.select[0] = 0;
		wacom->led.select[1] = 0;
		wacom->led.llv = 32;
		wacom->led.hlv = 0;
		wacom->led.img_lum = 0;

		error = sysfs_create_group(&wacom->hdev->dev.kobj,
					  &intuos5_led_attr_group);
906 907
		break;

908 909
	default:
		return 0;
910 911
	}

912
	if (error) {
913
		hid_err(wacom->hdev,
914 915 916 917
			"cannot create sysfs group err: %d\n", error);
		return error;
	}
	wacom_led_control(wacom);
918
	wacom->led_initialized = true;
919

920 921 922 923 924
	return 0;
}

static void wacom_destroy_leds(struct wacom *wacom)
{
925 926 927
	if (!wacom->led_initialized)
		return;

928 929 930
	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return;

931 932
	wacom->led_initialized = false;

933
	switch (wacom->wacom_wac.features.type) {
934
	case INTUOS4S:
935
	case INTUOS4:
936
	case INTUOS4WL:
937
	case INTUOS4L:
938
		sysfs_remove_group(&wacom->hdev->dev.kobj,
939 940 941
				   &intuos4_led_attr_group);
		break;

942
	case WACOM_24HD:
943
	case WACOM_21UX2:
944
		sysfs_remove_group(&wacom->hdev->dev.kobj,
945 946
				   &cintiq_led_attr_group);
		break;
947 948 949 950

	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
951 952 953
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
954 955
		sysfs_remove_group(&wacom->hdev->dev.kobj,
				   &intuos5_led_attr_group);
956
		break;
957 958 959
	}
}

960
static enum power_supply_property wacom_battery_props[] = {
961
	POWER_SUPPLY_PROP_PRESENT,
962
	POWER_SUPPLY_PROP_STATUS,
963
	POWER_SUPPLY_PROP_SCOPE,
964 965 966
	POWER_SUPPLY_PROP_CAPACITY
};

967 968 969 970 971 972
static enum power_supply_property wacom_ac_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_SCOPE,
};

973 974 975 976
static int wacom_battery_get_property(struct power_supply *psy,
				      enum power_supply_property psp,
				      union power_supply_propval *val)
{
977
	struct wacom *wacom = power_supply_get_drvdata(psy);
978 979 980
	int ret = 0;

	switch (psp) {
981 982 983
		case POWER_SUPPLY_PROP_PRESENT:
			val->intval = wacom->wacom_wac.bat_connected;
			break;
984 985 986
		case POWER_SUPPLY_PROP_SCOPE:
			val->intval = POWER_SUPPLY_SCOPE_DEVICE;
			break;
987 988
		case POWER_SUPPLY_PROP_CAPACITY:
			val->intval =
989 990 991 992 993 994 995 996
				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;
997 998
			else if (wacom->wacom_wac.ps_connected)
				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
999 1000
			else
				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1001 1002 1003 1004 1005 1006 1007 1008 1009
			break;
		default:
			ret = -EINVAL;
			break;
	}

	return ret;
}

1010 1011 1012 1013
static int wacom_ac_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
1014
	struct wacom *wacom = power_supply_get_drvdata(psy);
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
	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;
}

1033 1034
static int wacom_initialize_battery(struct wacom *wacom)
{
1035
	static atomic_t battery_no = ATOMIC_INIT(0);
1036
	struct power_supply_config psy_cfg = { .drv_data = wacom, };
1037
	unsigned long n;
1038

1039
	if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1040 1041
		struct power_supply_desc *bat_desc = &wacom->battery_desc;
		struct power_supply_desc *ac_desc = &wacom->ac_desc;
1042
		n = atomic_inc_return(&battery_no) - 1;
1043

1044 1045 1046
		bat_desc->properties = wacom_battery_props;
		bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
		bat_desc->get_property = wacom_battery_get_property;
1047
		sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1048 1049 1050
		bat_desc->name = wacom->wacom_wac.bat_name;
		bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
		bat_desc->use_for_apm = 0;
1051

1052 1053 1054
		ac_desc->properties = wacom_ac_props;
		ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
		ac_desc->get_property = wacom_ac_get_property;
1055
		sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
		ac_desc->name = wacom->wacom_wac.ac_name;
		ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
		ac_desc->use_for_apm = 0;

		wacom->battery = power_supply_register(&wacom->hdev->dev,
					      &wacom->battery_desc, &psy_cfg);
		if (IS_ERR(wacom->battery))
			return PTR_ERR(wacom->battery);

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

		wacom->ac = power_supply_register(&wacom->hdev->dev,
						  &wacom->ac_desc,
						  &psy_cfg);
		if (IS_ERR(wacom->ac)) {
			power_supply_unregister(wacom->battery);
			return PTR_ERR(wacom->ac);
1073 1074
		}

1075
		power_supply_powers(wacom->ac, &wacom->hdev->dev);
1076 1077
	}

1078
	return 0;
1079 1080 1081 1082
}

static void wacom_destroy_battery(struct wacom *wacom)
{
1083
	if (wacom->battery) {
1084 1085 1086 1087
		power_supply_unregister(wacom->battery);
		wacom->battery = NULL;
		power_supply_unregister(wacom->ac);
		wacom->ac = NULL;
1088
	}
1089 1090
}

1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
static ssize_t wacom_show_speed(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
	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)
{
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
	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;
}

1120
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1121 1122
		wacom_show_speed, wacom_store_speed);

1123
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1124 1125
{
	struct input_dev *input_dev;
1126
	struct hid_device *hdev = wacom->hdev;
1127 1128 1129
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

	input_dev = input_allocate_device();
1130 1131
	if (!input_dev)
		return NULL;
1132 1133

	input_dev->name = wacom_wac->name;
1134 1135
	input_dev->phys = hdev->phys;
	input_dev->dev.parent = &hdev->dev;
1136 1137
	input_dev->open = wacom_open;
	input_dev->close = wacom_close;
1138 1139 1140
	input_dev->uniq = hdev->uniq;
	input_dev->id.bustype = hdev->bus;
	input_dev->id.vendor  = hdev->vendor;
1141
	input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1142
	input_dev->id.version = hdev->version;
1143 1144
	input_set_drvdata(input_dev, wacom);

1145 1146 1147
	return input_dev;
}

1148
static void wacom_free_inputs(struct wacom *wacom)
1149
{
1150 1151 1152 1153 1154 1155 1156 1157
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

	if (wacom_wac->input)
		input_free_device(wacom_wac->input);
	if (wacom_wac->pad_input)
		input_free_device(wacom_wac->pad_input);
	wacom_wac->input = NULL;
	wacom_wac->pad_input = NULL;
1158 1159
}

1160
static int wacom_allocate_inputs(struct wacom *wacom)
1161 1162 1163 1164 1165 1166 1167
{
	struct input_dev *input_dev, *pad_input_dev;
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

	input_dev = wacom_allocate_input(wacom);
	pad_input_dev = wacom_allocate_input(wacom);
	if (!input_dev || !pad_input_dev) {
1168 1169
		wacom_free_inputs(wacom);
		return -ENOMEM;
1170 1171
	}

1172
	wacom_wac->input = input_dev;
1173 1174 1175
	wacom_wac->pad_input = pad_input_dev;
	wacom_wac->pad_input->name = wacom_wac->pad_name;

1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187
	return 0;
}

static void wacom_clean_inputs(struct wacom *wacom)
{
	if (wacom->wacom_wac.input) {
		if (wacom->wacom_wac.input_registered)
			input_unregister_device(wacom->wacom_wac.input);
		else
			input_free_device(wacom->wacom_wac.input);
	}
	if (wacom->wacom_wac.pad_input) {
1188
		if (wacom->wacom_wac.pad_registered)
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209
			input_unregister_device(wacom->wacom_wac.pad_input);
		else
			input_free_device(wacom->wacom_wac.pad_input);
	}
	wacom->wacom_wac.input = NULL;
	wacom->wacom_wac.pad_input = NULL;
	wacom_destroy_leds(wacom);
}

static int wacom_register_inputs(struct wacom *wacom)
{
	struct input_dev *input_dev, *pad_input_dev;
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
	int error;

	input_dev = wacom_wac->input;
	pad_input_dev = wacom_wac->pad_input;

	if (!input_dev || !pad_input_dev)
		return -EINVAL;

1210 1211 1212 1213 1214
	error = wacom_setup_pentouch_input_capabilities(input_dev, wacom_wac);
	if (!error) {
		error = input_register_device(input_dev);
		if (error)
			return error;
1215
		wacom_wac->input_registered = true;
1216
	}
1217

1218 1219 1220 1221 1222 1223 1224 1225 1226
	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)
1227
			goto fail_register_pad_input;
1228
		wacom_wac->pad_registered = true;
1229 1230 1231

		error = wacom_initialize_leds(wacom);
		if (error)
1232
			goto fail_leds;
1233 1234
	}

1235
	return 0;
1236

1237
fail_leds:
1238 1239
	input_unregister_device(pad_input_dev);
	pad_input_dev = NULL;
1240
	wacom_wac->pad_registered = false;
1241
fail_register_pad_input:
1242
	input_unregister_device(input_dev);
1243
	wacom_wac->input = NULL;
1244
	wacom_wac->input_registered = false;
1245 1246 1247
	return error;
}

1248 1249 1250 1251 1252
static void wacom_wireless_work(struct work_struct *work)
{
	struct wacom *wacom = container_of(work, struct wacom, work);
	struct usb_device *usbdev = wacom->usbdev;
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
1253
	struct hid_device *hdev1, *hdev2;
1254 1255 1256
	struct wacom *wacom1, *wacom2;
	struct wacom_wac *wacom_wac1, *wacom_wac2;
	int error;
1257 1258 1259

	/*
	 * Regardless if this is a disconnect or a new tablet,
1260
	 * remove any existing input and battery devices.
1261 1262
	 */

1263 1264
	wacom_destroy_battery(wacom);

1265
	/* Stylus interface */
1266 1267
	hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
	wacom1 = hid_get_drvdata(hdev1);
1268
	wacom_wac1 = &(wacom1->wacom_wac);
1269
	wacom_clean_inputs(wacom1);
1270 1271

	/* Touch interface */
1272 1273
	hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
	wacom2 = hid_get_drvdata(hdev2);
1274
	wacom_wac2 = &(wacom2->wacom_wac);
1275
	wacom_clean_inputs(wacom2);
1276 1277

	if (wacom_wac->pid == 0) {
1278
		hid_info(wacom->hdev, "wireless tablet disconnected\n");
1279
		wacom_wac1->shared->type = 0;
1280
	} else {
1281
		const struct hid_device_id *id = wacom_ids;
1282

1283
		hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
1284
			 wacom_wac->pid);
1285

1286 1287 1288
		while (id->bus) {
			if (id->vendor == USB_VENDOR_ID_WACOM &&
			    id->product == wacom_wac->pid)
1289 1290 1291 1292
				break;
			id++;
		}

1293
		if (!id->bus) {
1294
			hid_info(wacom->hdev, "ignoring unknown PID.\n");
1295 1296 1297 1298
			return;
		}

		/* Stylus interface */
1299
		wacom_wac1->features =
1300
			*((struct wacom_features *)id->driver_data);
1301
		wacom_wac1->features.device_type |= WACOM_DEVICETYPE_PEN;
1302 1303 1304
		if (wacom_wac1->features.type != INTUOSHT &&
		    wacom_wac1->features.type != BAMBOO_PT)
			wacom_wac1->features.device_type |= WACOM_DEVICETYPE_PAD;
1305 1306
		snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
			 wacom_wac1->features.name);
1307 1308
		snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
			 wacom_wac1->features.name);
1309 1310
		wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
		wacom_wac1->shared->type = wacom_wac1->features.type;
1311
		wacom_wac1->pid = wacom_wac->pid;
1312 1313
		error = wacom_allocate_inputs(wacom1) ||
			wacom_register_inputs(wacom1);
1314
		if (error)
1315
			goto fail;
1316 1317

		/* Touch interface */
1318 1319
		if (wacom_wac1->features.touch_max ||
		    wacom_wac1->features.type == INTUOSHT) {
1320
			wacom_wac2->features =
1321
				*((struct wacom_features *)id->driver_data);
1322 1323
			wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
			wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
1324 1325
			snprintf(wacom_wac2->name, WACOM_NAME_MAX,
				 "%s (WL) Finger",wacom_wac2->features.name);
1326
			snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
1327 1328 1329 1330 1331 1332
				 "%s (WL) Pad",wacom_wac2->features.name);
			if (wacom_wac1->features.touch_max)
				wacom_wac2->features.device_type |= WACOM_DEVICETYPE_TOUCH;
			if (wacom_wac1->features.type == INTUOSHT ||
			    wacom_wac1->features.type == BAMBOO_PT)
				wacom_wac2->features.device_type |= WACOM_DEVICETYPE_PAD;
1333
			wacom_wac2->pid = wacom_wac->pid;
1334 1335
			error = wacom_allocate_inputs(wacom2) ||
				wacom_register_inputs(wacom2);
1336 1337
			if (error)
				goto fail;
1338 1339 1340 1341

			if (wacom_wac1->features.type == INTUOSHT &&
			    wacom_wac1->features.touch_max)
				wacom_wac->shared->touch_input = wacom_wac2->input;
1342
		}
1343 1344 1345

		error = wacom_initialize_battery(wacom);
		if (error)
1346
			goto fail;
1347
	}
1348 1349 1350

	return;

1351
fail:
1352 1353
	wacom_clean_inputs(wacom1);
	wacom_clean_inputs(wacom2);
1354
	return;
1355 1356
}

1357 1358 1359 1360 1361
void wacom_battery_work(struct work_struct *work)
{
	struct wacom *wacom = container_of(work, struct wacom, work);

	if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1362
	     !wacom->battery) {
1363 1364 1365
		wacom_initialize_battery(wacom);
	}
	else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1366
		 wacom->battery) {
1367 1368 1369 1370
		wacom_destroy_battery(wacom);
	}
}

1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387
/*
 * 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)
{
1388 1389 1390 1391 1392 1393
	/* set unit to "100th of a mm" for devices not reported by HID */
	if (!features->unit) {
		features->unit = 0x11;
		features->unitExpo = -3;
	}

1394 1395 1396 1397 1398 1399 1400 1401 1402 1403
	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);
}

1404 1405 1406 1407 1408 1409 1410 1411 1412
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) {
1413
		size_t report_size = hid_report_len(report);
1414 1415 1416 1417 1418 1419 1420
		if (report_size > size)
			size = report_size;
	}

	return size;
}

1421 1422 1423 1424
static void wacom_update_name(struct wacom *wacom)
{
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
1425
	char name[WACOM_NAME_MAX];
1426 1427 1428 1429 1430 1431 1432

	/* 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 */
1433
			strlcpy(name, wacom->hdev->name, sizeof(name));
1434 1435 1436

			/* strip out excess whitespaces */
			while (1) {
1437
				char *gap = strstr(name, "  ");
1438 1439 1440 1441 1442 1443
				if (gap == NULL)
					break;
				/* shift everything including the terminator */
				memmove(gap, gap+1, strlen(gap));
			}
			/* get rid of trailing whitespace */
1444 1445
			if (name[strlen(name)-1] == ' ')
				name[strlen(name)-1] = '\0';
1446 1447
		} else {
			/* no meaningful name retrieved. use product ID */
1448
			snprintf(name, sizeof(name),
1449 1450 1451
				 "%s %X", features->name, wacom->hdev->product);
		}
	} else {
1452
		strlcpy(name, features->name, sizeof(name));
1453 1454 1455 1456
	}

	/* Append the device type to the name */
	snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1457
		"%s Pad", name);
1458

1459
	if (features->device_type & WACOM_DEVICETYPE_PEN) {
1460 1461
		snprintf(wacom_wac->name, sizeof(wacom_wac->name),
			"%s Pen", name);
1462
	}
1463
	else if (features->device_type & WACOM_DEVICETYPE_TOUCH) {
1464 1465 1466 1467 1468 1469
		snprintf(wacom_wac->name, sizeof(wacom_wac->name),
			"%s Finger", name);
	}
	else if (features->device_type & WACOM_DEVICETYPE_PAD) {
		snprintf(wacom_wac->name, sizeof(wacom_wac->name),
			"%s Pad", name);
1470
	}
1471 1472
}

1473 1474
static int wacom_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
1475
{
1476
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
1477 1478 1479
	struct usb_device *dev = interface_to_usbdev(intf);
	struct wacom *wacom;
	struct wacom_wac *wacom_wac;
1480 1481
	struct wacom_features *features;
	int error;
1482
	unsigned int connect_mask = HID_CONNECT_HIDRAW;
1483

1484
	if (!id->driver_data)
1485 1486
		return -EINVAL;

1487 1488
	hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;

1489 1490 1491
	/* hid-core sets this quirk for the boot interface */
	hdev->quirks &= ~HID_QUIRK_NOGET;

1492
	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
1493 1494
	if (!wacom)
		return -ENOMEM;
1495

1496 1497 1498
	hid_set_drvdata(hdev, wacom);
	wacom->hdev = hdev;

1499 1500 1501 1502
	/* ask for the report descriptor to be loaded by HID */
	error = hid_parse(hdev);
	if (error) {
		hid_err(hdev, "parse failed\n");
1503
		goto fail_parse;
1504 1505
	}

1506
	wacom_wac = &wacom->wacom_wac;
1507
	wacom_wac->features = *((struct wacom_features *)id->driver_data);
1508
	features = &wacom_wac->features;
1509
	features->pktlen = wacom_compute_pktlen(hdev);
1510 1511
	if (features->pktlen > WACOM_PKGLEN_MAX) {
		error = -EINVAL;
1512
		goto fail_pktlen;
1513
	}
1514

1515 1516
	if (features->check_for_hid_type && features->hid_type != hdev->type) {
		error = -ENODEV;
1517
		goto fail_type;
1518
	}
1519 1520

	wacom->usbdev = dev;
1521 1522
	wacom->intf = intf;
	mutex_init(&wacom->lock);
1523
	INIT_WORK(&wacom->work, wacom_wireless_work);
1524

1525 1526 1527 1528 1529 1530
	if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
		error = wacom_allocate_inputs(wacom);
		if (error)
			goto fail_allocate_inputs;
	}

1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545
	/*
	 * 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;
			goto fail_shared_data;
		}
	}

1546 1547 1548
	/* set the default size in case we do not get them from hid */
	wacom_set_default_phy(features);

1549
	/* Retrieve the physical and logical size for touch devices */
1550
	wacom_retrieve_hid_descriptor(hdev, features);
1551
	wacom_setup_device_quirks(wacom);
1552

1553 1554
	if (features->device_type == WACOM_DEVICETYPE_NONE &&
	    features->type != WIRELESS) {
1555 1556
		error = features->type == HID_GENERIC ? -ENODEV : 0;

1557
		dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1558 1559 1560 1561 1562
			 hdev->name,
			 error ? "Ignoring" : "Assuming pen");

		if (error)
			goto fail_shared_data;
1563

1564
		features->device_type |= WACOM_DEVICETYPE_PEN;
1565 1566
	}

1567 1568
	wacom_calculate_res(features);

1569
	wacom_update_name(wacom);
1570

1571 1572 1573
	error = wacom_add_shared_data(hdev);
	if (error)
		goto fail_shared_data;
1574

1575 1576 1577 1578
	if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
	     (features->quirks & WACOM_QUIRK_BATTERY)) {
		error = wacom_initialize_battery(wacom);
		if (error)
1579
			goto fail_battery;
1580 1581
	}

1582
	if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
1583
		error = wacom_register_inputs(wacom);
1584
		if (error)
1585
			goto fail_register_inputs;
1586 1587 1588 1589 1590 1591 1592 1593
	}

	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);
1594
	}
1595

1596 1597 1598
	if (features->type == HID_GENERIC)
		connect_mask |= HID_CONNECT_DRIVER;

1599
	/* Regular HID work starts now */
1600
	error = hid_hw_start(hdev, connect_mask);
1601 1602
	if (error) {
		hid_err(hdev, "hw start failed\n");
1603
		goto fail_hw_start;
1604
	}
1605

1606 1607 1608
	/* Note that if query fails it is not a hard failure */
	wacom_query_tablet_data(hdev, features);

1609 1610 1611
	if (features->quirks & WACOM_QUIRK_MONITOR)
		error = hid_hw_open(hdev);

1612 1613
	if (wacom_wac->features.type == INTUOSHT && 
	    wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) {
1614 1615 1616
			wacom_wac->shared->touch_input = wacom_wac->input;
	}

1617 1618
	return 0;

1619 1620
fail_hw_start:
	if (hdev->bus == BUS_BLUETOOTH)
1621
		device_remove_file(&hdev->dev, &dev_attr_speed);
1622
fail_register_inputs:
1623
	wacom_clean_inputs(wacom);
1624 1625
	wacom_destroy_battery(wacom);
fail_battery:
1626
	wacom_remove_shared_data(wacom);
1627
fail_shared_data:
1628 1629
	wacom_clean_inputs(wacom);
fail_allocate_inputs:
1630 1631 1632 1633
fail_type:
fail_pktlen:
fail_parse:
	kfree(wacom);
1634
	hid_set_drvdata(hdev, NULL);
1635
	return error;
1636 1637
}

1638
static void wacom_remove(struct hid_device *hdev)
1639
{
1640
	struct wacom *wacom = hid_get_drvdata(hdev);
1641

1642
	hid_hw_stop(hdev);
1643

1644
	cancel_work_sync(&wacom->work);
1645
	wacom_clean_inputs(wacom);
1646 1647
	if (hdev->bus == BUS_BLUETOOTH)
		device_remove_file(&hdev->dev, &dev_attr_speed);
1648
	wacom_destroy_battery(wacom);
1649
	wacom_remove_shared_data(wacom);
1650

1651 1652
	hid_set_drvdata(hdev, NULL);
	kfree(wacom);
1653 1654
}

1655
#ifdef CONFIG_PM
1656
static int wacom_resume(struct hid_device *hdev)
1657
{
1658
	struct wacom *wacom = hid_get_drvdata(hdev);
1659
	struct wacom_features *features = &wacom->wacom_wac.features;
1660 1661

	mutex_lock(&wacom->lock);
1662 1663

	/* switch to wacom mode first */
1664
	wacom_query_tablet_data(hdev, features);
1665
	wacom_led_control(wacom);
1666

1667 1668
	mutex_unlock(&wacom->lock);

1669
	return 0;
1670 1671
}

1672
static int wacom_reset_resume(struct hid_device *hdev)
1673
{
1674
	return wacom_resume(hdev);
1675
}
1676
#endif /* CONFIG_PM */
1677

1678
static struct hid_driver wacom_driver = {
1679
	.name =		"wacom",
1680
	.id_table =	wacom_ids,
1681
	.probe =	wacom_probe,
1682
	.remove =	wacom_remove,
1683 1684
	.event =	wacom_wac_event,
	.report =	wacom_wac_report,
1685
#ifdef CONFIG_PM
1686 1687
	.resume =	wacom_resume,
	.reset_resume =	wacom_reset_resume,
1688 1689
#endif
	.raw_event =	wacom_raw_event,
1690
};
1691
module_hid_driver(wacom_driver);
1692 1693 1694 1695 1696

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