wacom_sys.c 48.4 KB
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/*
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 * drivers/input/tablet/wacom_sys.c
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 *
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 *  USB Wacom tablet support - system specific code
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 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include "wacom_wac.h"
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#include "wacom.h"
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#include <linux/input/mt.h>
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#define WAC_MSG_RETRIES		5
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#define WAC_CMD_WL_LED_CONTROL	0x03
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#define WAC_CMD_LED_CONTROL	0x20
#define WAC_CMD_ICON_START	0x21
#define WAC_CMD_ICON_XFER	0x23
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#define WAC_CMD_ICON_BT_XFER	0x26
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#define WAC_CMD_RETRIES		10
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#define WAC_CMD_DELETE_PAIRING	0x20
#define WAC_CMD_UNPAIR_ALL	0xFF
#define WAC_REMOTE_SERIAL_MAX_STRLEN	9
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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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	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.
	 */
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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, 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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331
	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);
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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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	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) {
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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) {
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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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440
	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)
445
{
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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) {
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		if (intf->cur_altsetting->desc.bInterfaceNumber == 0)
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			features->device_type = WACOM_DEVICETYPE_WL_MONITOR;
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		else
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			features->device_type = WACOM_DEVICETYPE_NONE;
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		return;
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	}

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	wacom_parse_hid(hdev, features);
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}

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

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

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

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

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

	return NULL;
}

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

	mutex_lock(&wacom_udev_list_lock);

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

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

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

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

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

	kfree(data);
}

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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;
612 613 614 615 616 617 618 619 620 621
		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;
622 623 624 625 626 627 628 629
	}
	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;

630
		buf[0] = report_id;
631 632 633 634 635
		buf[1] = led;
		buf[2] = wacom->led.llv;
		buf[3] = wacom->led.hlv;
		buf[4] = wacom->led.img_lum;
	}
636

637
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
638
				  WAC_CMD_RETRIES);
639 640 641 642 643
	kfree(buf);

	return retval;
}

644 645
static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
		const unsigned len, const void *img)
646 647 648
{
	unsigned char *buf;
	int i, retval;
649
	const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
650

651
	buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
652 653 654 655 656 657
	if (!buf)
		return -ENOMEM;

	/* Send 'start' command */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 1;
658 659
	retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
				  WAC_CMD_RETRIES);
660 661 662
	if (retval < 0)
		goto out;

663
	buf[0] = xfer_id;
664 665 666
	buf[1] = button_id & 0x07;
	for (i = 0; i < 4; i++) {
		buf[2] = i;
667
		memcpy(buf + 3, img + i * chunk_len, chunk_len);
668

669
		retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
670
					  buf, chunk_len + 3, WAC_CMD_RETRIES);
671 672 673 674 675 676 677
		if (retval < 0)
			break;
	}

	/* Send 'stop' */
	buf[0] = WAC_CMD_ICON_START;
	buf[1] = 0;
678 679
	wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
			 WAC_CMD_RETRIES);
680 681 682 683 684 685

out:
	kfree(buf);
	return retval;
}

686
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
687 688
				      const char *buf, size_t count)
{
G
Geliang Tang 已提交
689
	struct hid_device *hdev = to_hid_device(dev);
690
	struct wacom *wacom = hid_get_drvdata(hdev);
691 692 693 694 695 696 697 698 699
	unsigned int id;
	int err;

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

	mutex_lock(&wacom->lock);

700
	wacom->led.select[set_id] = id & 0x3;
701 702 703 704 705 706 707
	err = wacom_led_control(wacom);

	mutex_unlock(&wacom->lock);

	return err < 0 ? err : count;
}

708 709 710 711 712 713
#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);		\
}									\
714 715 716
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev,	\
	struct device_attribute *attr, char *buf)			\
{									\
G
Geliang Tang 已提交
717
	struct hid_device *hdev = to_hid_device(dev);\
718
	struct wacom *wacom = hid_get_drvdata(hdev);			\
P
Ping Cheng 已提交
719 720
	return scnprintf(buf, PAGE_SIZE, "%d\n",			\
			 wacom->led.select[SET_ID]);			\
721
}									\
722
static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM,	\
723
		    wacom_led##SET_ID##_select_show,			\
724 725 726 727
		    wacom_led##SET_ID##_select_store)

DEVICE_LED_SELECT_ATTR(0);
DEVICE_LED_SELECT_ATTR(1);
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752

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
753
	struct hid_device *hdev = to_hid_device(dev);\
754
	struct wacom *wacom = hid_get_drvdata(hdev);			\
755 756 757 758
									\
	return wacom_luminance_store(wacom, &wacom->led.field,		\
				     buf, count);			\
}									\
P
Ping Cheng 已提交
759 760 761 762 763 764
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);	\
}									\
765
static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM,			\
P
Ping Cheng 已提交
766 767
		   wacom_##name##_luminance_show,			\
		   wacom_##name##_luminance_store)
768 769 770 771 772 773 774 775

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
776
	struct hid_device *hdev = to_hid_device(dev);
777
	struct wacom *wacom = hid_get_drvdata(hdev);
778
	int err;
779 780 781 782 783 784 785 786 787 788
	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;
	}
789

790
	if (count != len)
791 792 793 794
		return -EINVAL;

	mutex_lock(&wacom->lock);

795
	err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
796 797 798 799 800 801 802 803 804 805 806 807

	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);	\
}									\
808
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM,	\
809 810 811 812 813 814 815 816 817 818 819
		   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);

820 821 822 823 824 825 826 827 828 829 830 831
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[] = {
832 833
	&dev_attr_status0_luminance.attr,
	&dev_attr_status1_luminance.attr,
834
	&dev_attr_status_led0_select.attr,
835 836 837 838 839 840 841 842 843 844 845 846
	&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
};

847
static struct attribute_group intuos4_led_attr_group = {
848
	.name = "wacom_led",
849
	.attrs = intuos4_led_attrs,
850 851
};

852 853 854 855 856 857 858 859 860 861 862
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,
};

863 864 865 866
static int wacom_initialize_leds(struct wacom *wacom)
{
	int error;

867 868 869
	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return 0;

870 871
	/* Initialize default values */
	switch (wacom->wacom_wac.features.type) {
872
	case INTUOS4S:
873
	case INTUOS4:
874
	case INTUOS4WL:
875 876 877
	case INTUOS4L:
		wacom->led.select[0] = 0;
		wacom->led.select[1] = 0;
878
		wacom->led.llv = 10;
879 880
		wacom->led.hlv = 20;
		wacom->led.img_lum = 10;
881
		error = sysfs_create_group(&wacom->hdev->dev.kobj,
882 883 884
					   &intuos4_led_attr_group);
		break;

885
	case WACOM_24HD:
886 887 888 889 890 891
	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;
892

893
		error = sysfs_create_group(&wacom->hdev->dev.kobj,
894 895 896
					   &cintiq_led_attr_group);
		break;

897 898 899
	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
900 901 902
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
903 904 905 906 907 908 909 910
		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);
911 912
		break;

913 914
	default:
		return 0;
915 916
	}

917
	if (error) {
918
		hid_err(wacom->hdev,
919 920 921 922
			"cannot create sysfs group err: %d\n", error);
		return error;
	}
	wacom_led_control(wacom);
923
	wacom->led_initialized = true;
924

925 926 927 928 929
	return 0;
}

static void wacom_destroy_leds(struct wacom *wacom)
{
930 931 932
	if (!wacom->led_initialized)
		return;

933 934 935
	if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD))
		return;

936 937
	wacom->led_initialized = false;

938
	switch (wacom->wacom_wac.features.type) {
939
	case INTUOS4S:
940
	case INTUOS4:
941
	case INTUOS4WL:
942
	case INTUOS4L:
943
		sysfs_remove_group(&wacom->hdev->dev.kobj,
944 945 946
				   &intuos4_led_attr_group);
		break;

947
	case WACOM_24HD:
948
	case WACOM_21UX2:
949
		sysfs_remove_group(&wacom->hdev->dev.kobj,
950 951
				   &cintiq_led_attr_group);
		break;
952 953 954 955

	case INTUOS5S:
	case INTUOS5:
	case INTUOS5L:
956 957 958
	case INTUOSPS:
	case INTUOSPM:
	case INTUOSPL:
959 960
		sysfs_remove_group(&wacom->hdev->dev.kobj,
				   &intuos5_led_attr_group);
961
		break;
962 963 964
	}
}

965
static enum power_supply_property wacom_battery_props[] = {
966
	POWER_SUPPLY_PROP_PRESENT,
967
	POWER_SUPPLY_PROP_STATUS,
968
	POWER_SUPPLY_PROP_SCOPE,
969 970 971
	POWER_SUPPLY_PROP_CAPACITY
};

972 973 974 975 976 977
static enum power_supply_property wacom_ac_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_SCOPE,
};

978 979 980 981
static int wacom_battery_get_property(struct power_supply *psy,
				      enum power_supply_property psp,
				      union power_supply_propval *val)
{
982
	struct wacom *wacom = power_supply_get_drvdata(psy);
983 984 985
	int ret = 0;

	switch (psp) {
986 987 988
		case POWER_SUPPLY_PROP_PRESENT:
			val->intval = wacom->wacom_wac.bat_connected;
			break;
989 990 991
		case POWER_SUPPLY_PROP_SCOPE:
			val->intval = POWER_SUPPLY_SCOPE_DEVICE;
			break;
992 993
		case POWER_SUPPLY_PROP_CAPACITY:
			val->intval =
994 995 996 997 998 999 1000 1001
				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;
1002 1003
			else if (wacom->wacom_wac.ps_connected)
				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1004 1005
			else
				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1006 1007 1008 1009 1010 1011 1012 1013 1014
			break;
		default:
			ret = -EINVAL;
			break;
	}

	return ret;
}

1015 1016 1017 1018
static int wacom_ac_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
1019
	struct wacom *wacom = power_supply_get_drvdata(psy);
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037
	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;
}

1038 1039
static int wacom_initialize_battery(struct wacom *wacom)
{
1040
	static atomic_t battery_no = ATOMIC_INIT(0);
1041
	struct power_supply_config psy_cfg = { .drv_data = wacom, };
1042
	unsigned long n;
1043

1044
	if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
1045 1046
		struct power_supply_desc *bat_desc = &wacom->battery_desc;
		struct power_supply_desc *ac_desc = &wacom->ac_desc;
1047
		n = atomic_inc_return(&battery_no) - 1;
1048

1049 1050 1051
		bat_desc->properties = wacom_battery_props;
		bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
		bat_desc->get_property = wacom_battery_get_property;
1052
		sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
1053 1054 1055
		bat_desc->name = wacom->wacom_wac.bat_name;
		bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
		bat_desc->use_for_apm = 0;
1056

1057 1058 1059
		ac_desc->properties = wacom_ac_props;
		ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
		ac_desc->get_property = wacom_ac_get_property;
1060
		sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
		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);
1078 1079
		}

1080
		power_supply_powers(wacom->ac, &wacom->hdev->dev);
1081 1082
	}

1083
	return 0;
1084 1085 1086 1087
}

static void wacom_destroy_battery(struct wacom *wacom)
{
1088
	if (wacom->battery) {
1089 1090 1091 1092
		power_supply_unregister(wacom->battery);
		wacom->battery = NULL;
		power_supply_unregister(wacom->ac);
		wacom->ac = NULL;
1093
	}
1094 1095
}

1096 1097 1098 1099
static ssize_t wacom_show_speed(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
G
Geliang Tang 已提交
1100
	struct hid_device *hdev = to_hid_device(dev);
1101 1102 1103 1104 1105 1106 1107 1108 1109
	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
1110
	struct hid_device *hdev = to_hid_device(dev);
1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124
	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;
}

1125
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
1126 1127
		wacom_show_speed, wacom_store_speed);

1128 1129 1130 1131 1132

static ssize_t wacom_show_remote_mode(struct kobject *kobj,
				      struct kobj_attribute *kattr,
				      char *buf, int index)
{
G
Geliang Tang 已提交
1133
	struct device *dev = kobj_to_dev(kobj->parent);
G
Geliang Tang 已提交
1134
	struct hid_device *hdev = to_hid_device(dev);
1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
	struct wacom *wacom = hid_get_drvdata(hdev);
	u8 mode;

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

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

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

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

	wacom_wac->serial[index] = serial;

	buf = kzalloc(WAC_REMOTE_SERIAL_MAX_STRLEN, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;
	snprintf(buf, WAC_REMOTE_SERIAL_MAX_STRLEN, "%d", serial);
	wacom->remote_group[index].name = buf;

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

	return 0;
}

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

	if (!serial)
		return;

	for (i = 0; i < WACOM_MAX_REMOTES; i++) {
		if (wacom_wac->serial[i] == serial) {
			wacom_wac->serial[i] = 0;
			wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
			if (wacom->remote_group[i].name) {
				sysfs_remove_group(wacom->remote_dir,
						   &wacom->remote_group[i]);
				kfree(wacom->remote_group[i].name);
				wacom->remote_group[i].name = NULL;
			}
		}
	}
}

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

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

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

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

	return retval;
}

static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
					 struct kobj_attribute *attr,
					 const char *buf, size_t count)
{
	unsigned char selector = 0;
G
Geliang Tang 已提交
1244
	struct device *dev = kobj_to_dev(kobj->parent);
G
Geliang Tang 已提交
1245
	struct hid_device *hdev = to_hid_device(dev);
1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310
	struct wacom *wacom = hid_get_drvdata(hdev);
	int err;

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

	mutex_lock(&wacom->lock);

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

	return err < 0 ? err : count;
}

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

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

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

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

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

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

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

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

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

	return 0;
}

1311
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
1312 1313
{
	struct input_dev *input_dev;
1314
	struct hid_device *hdev = wacom->hdev;
1315 1316 1317
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);

	input_dev = input_allocate_device();
1318 1319
	if (!input_dev)
		return NULL;
1320

1321
	input_dev->name = wacom_wac->features.name;
1322 1323
	input_dev->phys = hdev->phys;
	input_dev->dev.parent = &hdev->dev;
1324 1325
	input_dev->open = wacom_open;
	input_dev->close = wacom_close;
1326 1327 1328
	input_dev->uniq = hdev->uniq;
	input_dev->id.bustype = hdev->bus;
	input_dev->id.vendor  = hdev->vendor;
1329
	input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
1330
	input_dev->id.version = hdev->version;
1331 1332
	input_set_drvdata(input_dev, wacom);

1333 1334 1335
	return input_dev;
}

1336 1337
static void wacom_clean_inputs(struct wacom *wacom)
{
1338 1339 1340
	if (wacom->wacom_wac.pen_input) {
		if (wacom->wacom_wac.pen_registered)
			input_unregister_device(wacom->wacom_wac.pen_input);
1341
		else
1342 1343 1344 1345 1346 1347 1348
			input_free_device(wacom->wacom_wac.pen_input);
	}
	if (wacom->wacom_wac.touch_input) {
		if (wacom->wacom_wac.touch_registered)
			input_unregister_device(wacom->wacom_wac.touch_input);
		else
			input_free_device(wacom->wacom_wac.touch_input);
1349 1350
	}
	if (wacom->wacom_wac.pad_input) {
1351
		if (wacom->wacom_wac.pad_registered)
1352 1353 1354 1355
			input_unregister_device(wacom->wacom_wac.pad_input);
		else
			input_free_device(wacom->wacom_wac.pad_input);
	}
1356
	kobject_put(wacom->remote_dir);
1357 1358
	wacom->wacom_wac.pen_input = NULL;
	wacom->wacom_wac.touch_input = NULL;
1359
	wacom->wacom_wac.pad_input = NULL;
1360 1361 1362
	wacom->wacom_wac.pen_registered = false;
	wacom->wacom_wac.touch_registered = false;
	wacom->wacom_wac.pad_registered = false;
1363 1364 1365
	wacom_destroy_leds(wacom);
}

1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
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);
	if (!wacom_wac->pen_input || !wacom_wac->touch_input || !wacom_wac->pad_input) {
		wacom_clean_inputs(wacom);
		return -ENOMEM;
	}

1378
	wacom_wac->pen_input->name = wacom_wac->pen_name;
1379 1380 1381 1382 1383 1384
	wacom_wac->touch_input->name = wacom_wac->touch_name;
	wacom_wac->pad_input->name = wacom_wac->pad_name;

	return 0;
}

1385 1386
static int wacom_register_inputs(struct wacom *wacom)
{
1387
	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
1388
	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
1389
	int error = 0;
1390

1391 1392
	pen_input_dev = wacom_wac->pen_input;
	touch_input_dev = wacom_wac->touch_input;
1393 1394
	pad_input_dev = wacom_wac->pad_input;

1395
	if (!pen_input_dev || !touch_input_dev || !pad_input_dev)
1396 1397
		return -EINVAL;

1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
	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)
			goto fail_register_pen_input;
		wacom_wac->pen_registered = true;
	}

	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);
1419
		if (error)
1420 1421
			goto fail_register_touch_input;
		wacom_wac->touch_registered = true;
1422
	}
1423

1424 1425 1426 1427 1428 1429 1430 1431 1432
	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)
1433
			goto fail_register_pad_input;
1434
		wacom_wac->pad_registered = true;
1435 1436 1437

		error = wacom_initialize_leds(wacom);
		if (error)
1438
			goto fail_leds;
1439 1440 1441 1442

		error = wacom_initialize_remote(wacom);
		if (error)
			goto fail_remote;
1443 1444
	}

1445
	return 0;
1446

1447 1448
fail_remote:
	wacom_destroy_leds(wacom);
1449
fail_leds:
1450 1451
	input_unregister_device(pad_input_dev);
	pad_input_dev = NULL;
1452
	wacom_wac->pad_registered = false;
1453
fail_register_pad_input:
1454 1455
	if (touch_input_dev)
		input_unregister_device(touch_input_dev);
1456 1457 1458
	wacom_wac->touch_input = NULL;
	wacom_wac->touch_registered = false;
fail_register_touch_input:
1459 1460
	if (pen_input_dev)
		input_unregister_device(pen_input_dev);
1461 1462 1463
	wacom_wac->pen_input = NULL;
	wacom_wac->pen_registered = false;
fail_register_pen_input:
1464 1465 1466
	return error;
}

1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499
/*
 * 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);
}

1500 1501 1502 1503 1504
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) &&
1505
	     !wacom->battery) {
1506 1507 1508
		wacom_initialize_battery(wacom);
	}
	else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
1509
		 wacom->battery) {
1510 1511 1512 1513
		wacom_destroy_battery(wacom);
	}
}

1514 1515 1516 1517 1518 1519 1520 1521 1522
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) {
1523
		size_t report_size = hid_report_len(report);
1524 1525 1526 1527 1528 1529 1530
		if (report_size > size)
			size = report_size;
	}

	return size;
}

1531
static void wacom_update_name(struct wacom *wacom, const char *suffix)
1532 1533 1534
{
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
1535
	char name[WACOM_NAME_MAX];
1536 1537 1538 1539 1540 1541 1542

	/* 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 */
1543
			strlcpy(name, wacom->hdev->name, sizeof(name));
1544 1545 1546

			/* strip out excess whitespaces */
			while (1) {
1547
				char *gap = strstr(name, "  ");
1548 1549 1550 1551 1552 1553
				if (gap == NULL)
					break;
				/* shift everything including the terminator */
				memmove(gap, gap+1, strlen(gap));
			}
			/* get rid of trailing whitespace */
1554 1555
			if (name[strlen(name)-1] == ' ')
				name[strlen(name)-1] = '\0';
1556 1557
		} else {
			/* no meaningful name retrieved. use product ID */
1558
			snprintf(name, sizeof(name),
1559 1560 1561
				 "%s %X", features->name, wacom->hdev->product);
		}
	} else {
1562
		strlcpy(name, features->name, sizeof(name));
1563 1564 1565
	}

	/* Append the device type to the name */
1566
	snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name),
1567
		"%s%s Pen", name, suffix);
1568
	snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name),
1569
		"%s%s Finger", name, suffix);
1570
	snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
1571
		"%s%s Pad", name, suffix);
1572 1573
}

1574
static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
1575
{
1576 1577 1578
	struct wacom_wac *wacom_wac = &wacom->wacom_wac;
	struct wacom_features *features = &wacom_wac->features;
	struct hid_device *hdev = wacom->hdev;
1579
	int error;
1580
	unsigned int connect_mask = HID_CONNECT_HIDRAW;
1581

1582
	features->pktlen = wacom_compute_pktlen(hdev);
1583 1584
	if (features->pktlen > WACOM_PKGLEN_MAX)
		return -EINVAL;
1585

1586 1587
	error = wacom_allocate_inputs(wacom);
	if (error)
1588
		return error;
1589

1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600
	/*
	 * 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;
1601
			goto fail_allocate_inputs;
1602 1603 1604
		}
	}

1605 1606 1607
	/* set the default size in case we do not get them from hid */
	wacom_set_default_phy(features);

1608
	/* Retrieve the physical and logical size for touch devices */
1609
	wacom_retrieve_hid_descriptor(hdev, features);
1610
	wacom_setup_device_quirks(wacom);
1611

1612 1613
	if (features->device_type == WACOM_DEVICETYPE_NONE &&
	    features->type != WIRELESS) {
1614 1615
		error = features->type == HID_GENERIC ? -ENODEV : 0;

1616
		dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.",
1617 1618 1619 1620
			 hdev->name,
			 error ? "Ignoring" : "Assuming pen");

		if (error)
1621
			goto fail_parsed;
1622

1623
		features->device_type |= WACOM_DEVICETYPE_PEN;
1624 1625
	}

1626 1627
	wacom_calculate_res(features);

1628
	wacom_update_name(wacom, wireless ? " (WL)" : "");
1629

1630 1631 1632
	error = wacom_add_shared_data(hdev);
	if (error)
		goto fail_shared_data;
1633

1634
	if (!(features->device_type & WACOM_DEVICETYPE_WL_MONITOR) &&
1635 1636 1637
	     (features->quirks & WACOM_QUIRK_BATTERY)) {
		error = wacom_initialize_battery(wacom);
		if (error)
1638
			goto fail_battery;
1639 1640
	}

1641 1642 1643
	error = wacom_register_inputs(wacom);
	if (error)
		goto fail_register_inputs;
1644

1645 1646 1647
	if (features->type == HID_GENERIC)
		connect_mask |= HID_CONNECT_DRIVER;

1648
	/* Regular HID work starts now */
1649
	error = hid_hw_start(hdev, connect_mask);
1650 1651
	if (error) {
		hid_err(hdev, "hw start failed\n");
1652
		goto fail_hw_start;
1653
	}
1654

1655 1656 1657 1658
	if (!wireless) {
		/* Note that if query fails it is not a hard failure */
		wacom_query_tablet_data(hdev, features);
	}
1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674

	/* touch only Bamboo doesn't support pen */
	if ((features->type == BAMBOO_TOUCH) &&
	    (features->device_type & WACOM_DEVICETYPE_PEN)) {
		error = -ENODEV;
		goto fail_hw_start;
	}

	/* 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;
		goto fail_hw_start;
	}

1675
	if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR)
1676 1677
		error = hid_hw_open(hdev);

1678 1679 1680
	if ((wacom_wac->features.type == INTUOSHT ||
	    wacom_wac->features.type == INTUOSHT2) &&
	    (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH)) {
1681
			wacom_wac->shared->touch_input = wacom_wac->touch_input;
1682 1683
	}

1684 1685
	return 0;

1686
fail_hw_start:
1687
	hid_hw_stop(hdev);
1688
fail_register_inputs:
1689
	wacom_clean_inputs(wacom);
1690 1691
	wacom_destroy_battery(wacom);
fail_battery:
1692
	wacom_remove_shared_data(wacom);
1693
fail_shared_data:
1694
fail_parsed:
1695
fail_allocate_inputs:
1696 1697 1698 1699
	wacom_clean_inputs(wacom);
	return error;
}

1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752
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;
	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);
	wacom_clean_inputs(wacom1);

	/* Touch interface */
	hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
	wacom2 = hid_get_drvdata(hdev2);
	wacom_wac2 = &(wacom2->wacom_wac);
	wacom_clean_inputs(wacom2);

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

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

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

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

		/* Stylus interface */
		wacom_wac1->features =
			*((struct wacom_features *)id->driver_data);
1753

1754
		wacom_wac1->pid = wacom_wac->pid;
1755 1756
		hid_hw_stop(hdev1);
		error = wacom_parse_and_register(wacom1, true);
1757 1758 1759 1760 1761 1762 1763 1764 1765 1766
		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;
1767 1768
			hid_hw_stop(hdev2);
			error = wacom_parse_and_register(wacom2, true);
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			if (error)
				goto fail;
		}

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

	return;

fail:
	wacom_clean_inputs(wacom1);
	wacom_clean_inputs(wacom2);
	return;
}

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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;

	wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
	if (!wacom)
		return -ENOMEM;

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

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

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

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

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

1832
	error = wacom_parse_and_register(wacom, false);
1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845
	if (error)
		goto fail_parse;

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

	return 0;

1846 1847 1848
fail_type:
fail_parse:
	kfree(wacom);
1849
	hid_set_drvdata(hdev, NULL);
1850
	return error;
1851 1852
}

1853
static void wacom_remove(struct hid_device *hdev)
1854
{
1855
	struct wacom *wacom = hid_get_drvdata(hdev);
1856

1857
	hid_hw_stop(hdev);
1858

1859
	cancel_work_sync(&wacom->work);
1860
	wacom_clean_inputs(wacom);
1861 1862
	if (hdev->bus == BUS_BLUETOOTH)
		device_remove_file(&hdev->dev, &dev_attr_speed);
1863
	wacom_destroy_battery(wacom);
1864
	wacom_remove_shared_data(wacom);
1865

1866 1867
	hid_set_drvdata(hdev, NULL);
	kfree(wacom);
1868 1869
}

1870
#ifdef CONFIG_PM
1871
static int wacom_resume(struct hid_device *hdev)
1872
{
1873
	struct wacom *wacom = hid_get_drvdata(hdev);
1874
	struct wacom_features *features = &wacom->wacom_wac.features;
1875 1876

	mutex_lock(&wacom->lock);
1877 1878

	/* switch to wacom mode first */
1879
	wacom_query_tablet_data(hdev, features);
1880
	wacom_led_control(wacom);
1881

1882 1883
	mutex_unlock(&wacom->lock);

1884
	return 0;
1885 1886
}

1887
static int wacom_reset_resume(struct hid_device *hdev)
1888
{
1889
	return wacom_resume(hdev);
1890
}
1891
#endif /* CONFIG_PM */
1892

1893
static struct hid_driver wacom_driver = {
1894
	.name =		"wacom",
1895
	.id_table =	wacom_ids,
1896
	.probe =	wacom_probe,
1897
	.remove =	wacom_remove,
1898
	.report =	wacom_wac_report,
1899
#ifdef CONFIG_PM
1900 1901
	.resume =	wacom_resume,
	.reset_resume =	wacom_reset_resume,
1902 1903
#endif
	.raw_event =	wacom_raw_event,
1904
};
1905
module_hid_driver(wacom_driver);
1906 1907 1908 1909 1910

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