[linux-block.git] / drivers / hid / hid-wacom.c

/*
 *  Bluetooth Wacom Tablet support
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 *  Copyright (c) 2006-2007 Jiri Kosina
 *  Copyright (c) 2007 Paul Walmsley
 *  Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
 *  Copyright (c) 2006 Andrew Zabolotny <zap@homelink.ru>
 *  Copyright (c) 2009 Bastien Nocera <hadess@hadess.net>
 *  Copyright (c) 2011 Przemysław Firszt <przemo@firszt.eu>
 */

/*
 * 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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/slab.h>
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
#include <linux/power_supply.h>
#endif

#include "hid-ids.h"

struct wacom_data {
	__u16 tool;
	unsigned char butstate;
	__u8 features;
	unsigned char high_speed;
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	int battery_capacity;
	struct power_supply battery;
	struct power_supply ac;
#endif
};

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
/*percent of battery capacity, 0 means AC online*/
static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };

static enum power_supply_property wacom_battery_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_CAPACITY
};

static enum power_supply_property wacom_ac_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_ONLINE
};

static int wacom_battery_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
	struct wacom_data *wdata = container_of(psy,
					struct wacom_data, battery);
	int power_state = batcap[wdata->battery_capacity];
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_PRESENT:
		val->intval = 1;
		break;
	case POWER_SUPPLY_PROP_CAPACITY:
		/* show 100% battery capacity when charging */
		if (power_state == 0)
			val->intval = 100;
		else
			val->intval = power_state;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

static int wacom_ac_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
	struct wacom_data *wdata = container_of(psy, struct wacom_data, ac);
	int power_state = batcap[wdata->battery_capacity];
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_PRESENT:
		/* fall through */
	case POWER_SUPPLY_PROP_ONLINE:
		if (power_state == 0)
			val->intval = 1;
		else
			val->intval = 0;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}
#endif

static void wacom_set_features(struct hid_device *hdev)
{
	int ret;
	__u8 rep_data[2];

	/*set high speed, tablet mode*/
	rep_data[0] = 0x03;
	rep_data[1] = 0x20;
	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
				HID_FEATURE_REPORT);
	return;
}

static void wacom_poke(struct hid_device *hdev, u8 speed)
{
	struct wacom_data *wdata = hid_get_drvdata(hdev);
	int limit, ret;
	char rep_data[2];

	rep_data[0] = 0x03 ; rep_data[1] = 0x00;
	limit = 3;
	do {
		ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
				HID_FEATURE_REPORT);
	} while (ret < 0 && limit-- > 0);

	if (ret >= 0) {
		if (speed == 0)
			rep_data[0] = 0x05;
		else
			rep_data[0] = 0x06;

		rep_data[1] = 0x00;
		limit = 3;
		do {
			ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
					HID_FEATURE_REPORT);
		} while (ret < 0 && limit-- > 0);

		if (ret >= 0) {
			wdata->high_speed = speed;
			return;
		}
	}

	/*
	 * 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);
	return;
}

static ssize_t wacom_show_speed(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
	struct wacom_data *wdata = dev_get_drvdata(dev);

	return snprintf(buf, PAGE_SIZE, "%i\n", wdata->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);
	int new_speed;

	if (sscanf(buf, "%1d", &new_speed ) != 1)
		return -EINVAL;

	if (new_speed == 0 || new_speed == 1) {
		wacom_poke(hdev, new_speed);
		return strnlen(buf, PAGE_SIZE);
	} else
		return -EINVAL;
}

static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR | S_IWGRP,
		wacom_show_speed, wacom_store_speed);

static int wacom_gr_parse_report(struct hid_device *hdev,
			struct wacom_data *wdata,
			struct input_dev *input, unsigned char *data)
{
	int tool, x, y, rw;

	tool = 0;
	/* Get X & Y positions */
	x = le16_to_cpu(*(__le16 *) &data[2]);
	y = le16_to_cpu(*(__le16 *) &data[4]);

	/* Get current tool identifier */
	if (data[1] & 0x90) { /* If pen is in the in/active area */
		switch ((data[1] >> 5) & 3) {
		case 0:	/* Pen */
			tool = BTN_TOOL_PEN;
			break;

		case 1: /* Rubber */
			tool = BTN_TOOL_RUBBER;
			break;

		case 2: /* Mouse with wheel */
		case 3: /* Mouse without wheel */
			tool = BTN_TOOL_MOUSE;
			break;
		}

		/* Reset tool if out of active tablet area */
		if (!(data[1] & 0x10))
			tool = 0;
	}

	/* If tool changed, notify input subsystem */
	if (wdata->tool != tool) {
		if (wdata->tool) {
			/* Completely reset old tool state */
			if (wdata->tool == BTN_TOOL_MOUSE) {
				input_report_key(input, BTN_LEFT, 0);
				input_report_key(input, BTN_RIGHT, 0);
				input_report_key(input, BTN_MIDDLE, 0);
				input_report_abs(input, ABS_DISTANCE,
					input_abs_get_max(input, ABS_DISTANCE));
			} else {
				input_report_key(input, BTN_TOUCH, 0);
				input_report_key(input, BTN_STYLUS, 0);
				input_report_key(input, BTN_STYLUS2, 0);
				input_report_abs(input, ABS_PRESSURE, 0);
			}
			input_report_key(input, wdata->tool, 0);
			input_sync(input);
		}
		wdata->tool = tool;
		if (tool)
			input_report_key(input, tool, 1);
	}

	if (tool) {
		input_report_abs(input, ABS_X, x);
		input_report_abs(input, ABS_Y, y);

		switch ((data[1] >> 5) & 3) {
		case 2: /* Mouse with wheel */
			input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
			rw = (data[6] & 0x01) ? -1 :
				(data[6] & 0x02) ? 1 : 0;
			input_report_rel(input, REL_WHEEL, rw);
			/* fall through */

		case 3: /* Mouse without wheel */
			input_report_key(input, BTN_LEFT, data[1] & 0x01);
			input_report_key(input, BTN_RIGHT, data[1] & 0x02);
			/* Compute distance between mouse and tablet */
			rw = 44 - (data[6] >> 2);
			if (rw < 0)
				rw = 0;
			else if (rw > 31)
				rw = 31;
			input_report_abs(input, ABS_DISTANCE, rw);
			break;

		default:
			input_report_abs(input, ABS_PRESSURE,
					data[6] | (((__u16) (data[1] & 0x08)) << 5));
			input_report_key(input, BTN_TOUCH, data[1] & 0x01);
			input_report_key(input, BTN_STYLUS, data[1] & 0x02);
			input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04);
			break;
		}

		input_sync(input);
	}

	/* Report the state of the two buttons at the top of the tablet
	 * as two extra fingerpad keys (buttons 4 & 5). */
	rw = data[7] & 0x03;
	if (rw != wdata->butstate) {
		wdata->butstate = rw;
		input_report_key(input, BTN_0, rw & 0x02);
		input_report_key(input, BTN_1, rw & 0x01);
		input_report_key(input, BTN_TOOL_FINGER, 0xf0);
		input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
		input_sync(input);
	}

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	/* Store current battery capacity */
	rw = (data[7] >> 2 & 0x07);
	if (rw != wdata->battery_capacity)
		wdata->battery_capacity = rw;
#endif
	return 1;
}

static void wacom_i4_parse_pen_report(struct wacom_data *wdata,
			struct input_dev *input, unsigned char *data)
{
	__u16 x, y, pressure;
	__u32 id;

	switch (data[1]) {
	case 0x80: /* Out of proximity report */
		wdata->tool = 0;
		input_report_key(input, BTN_TOUCH, 0);
		input_report_abs(input, ABS_PRESSURE, 0);
		input_report_key(input, wdata->tool, 0);
		input_sync(input);
		break;
	case 0xC2: /* Tool report */
		id = ((data[2] << 4) | (data[3] >> 4) |
			((data[7] & 0x0f) << 20) |
			((data[8] & 0xf0) << 12)) & 0xfffff;

		switch (id) {
		case 0x802:
			wdata->tool = BTN_TOOL_PEN;
			break;
		case 0x80A:
			wdata->tool = BTN_TOOL_RUBBER;
			break;
		}
		break;
	default: /* Position/pressure report */
		x = data[2] << 9 | data[3] << 1 | ((data[9] & 0x02) >> 1);
		y = data[4] << 9 | data[5] << 1 | (data[9] & 0x01);
		pressure = (data[6] << 3) | ((data[7] & 0xC0) >> 5)
			| (data[1] & 0x01);

		input_report_key(input, BTN_TOUCH, pressure > 1);

		input_report_key(input, BTN_STYLUS, data[1] & 0x02);
		input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
		input_report_key(input, wdata->tool, 1);
		input_report_abs(input, ABS_X, x);
		input_report_abs(input, ABS_Y, y);
		input_report_abs(input, ABS_PRESSURE, pressure);
		input_sync(input);
		break;
	}

	return;
}

static void wacom_i4_parse_report(struct hid_device *hdev,
			struct wacom_data *wdata,
			struct input_dev *input, unsigned char *data)
{
	switch (data[0]) {
	case 0x00: /* Empty report */
		break;
	case 0x02: /* Pen report */
		wacom_i4_parse_pen_report(wdata, input, data);
		break;
	case 0x03: /* Features Report */
		wdata->features = data[2];
		break;
	case 0x0C: /* Button report */
		break;
	default:
		hid_err(hdev, "Unknown report: %d,%d\n", data[0], data[1]);
		break;
	}
}

static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
		u8 *raw_data, int size)
{
	struct wacom_data *wdata = hid_get_drvdata(hdev);
	struct hid_input *hidinput;
	struct input_dev *input;
	unsigned char *data = (unsigned char *) raw_data;
	int i;

	if (!(hdev->claimed & HID_CLAIMED_INPUT))
		return 0;

	hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
	input = hidinput->input;

	/* Check if this is a tablet report */
	if (data[0] != 0x03)
		return 0;

	switch (hdev->product) {
	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
		return wacom_gr_parse_report(hdev, wdata, input, data);
		break;
	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
		i = 1;

		switch (data[0]) {
		case 0x04:
			wacom_i4_parse_report(hdev, wdata, input, data + i);
			i += 10;
			/* fall through */
		case 0x03:
			wacom_i4_parse_report(hdev, wdata, input, data + i);
			i += 10;
			wacom_i4_parse_report(hdev, wdata, input, data + i);
			break;
		default:
			hid_err(hdev, "Unknown report: %d,%d size:%d\n",
					data[0], data[1], size);
			return 0;
		}
	}
	return 1;
}

static int wacom_input_mapped(struct hid_device *hdev, struct hid_input *hi,
	struct hid_field *field, struct hid_usage *usage, unsigned long **bit,
								int *max)
{
	struct input_dev *input = hi->input;

	__set_bit(INPUT_PROP_POINTER, input->propbit);

	/* Basics */
	input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);

	__set_bit(REL_WHEEL, input->relbit);

	__set_bit(BTN_TOOL_PEN, input->keybit);
	__set_bit(BTN_TOUCH, input->keybit);
	__set_bit(BTN_STYLUS, input->keybit);
	__set_bit(BTN_STYLUS2, input->keybit);
	__set_bit(BTN_LEFT, input->keybit);
	__set_bit(BTN_RIGHT, input->keybit);
	__set_bit(BTN_MIDDLE, input->keybit);

	/* Pad */
	input->evbit[0] |= BIT(EV_MSC);

	__set_bit(MSC_SERIAL, input->mscbit);

	__set_bit(BTN_0, input->keybit);
	__set_bit(BTN_1, input->keybit);
	__set_bit(BTN_TOOL_FINGER, input->keybit);

	/* Distance, rubber and mouse */
	__set_bit(BTN_TOOL_RUBBER, input->keybit);
	__set_bit(BTN_TOOL_MOUSE, input->keybit);

	switch (hdev->product) {
	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
		input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
		input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
		input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
		input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
		break;
	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
		input_set_abs_params(input, ABS_X, 0, 40640, 4, 0);
		input_set_abs_params(input, ABS_Y, 0, 25400, 4, 0);
		input_set_abs_params(input, ABS_PRESSURE, 0, 2047, 0, 0);
		break;
	}

	return 0;
}

static int wacom_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
{
	struct wacom_data *wdata;
	int ret;

	wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
	if (wdata == NULL) {
		hid_err(hdev, "can't alloc wacom descriptor\n");
		return -ENOMEM;
	}

	hid_set_drvdata(hdev, wdata);

	/* Parse the HID report now */
	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "parse failed\n");
		goto err_free;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		hid_err(hdev, "hw start failed\n");
		goto err_free;
	}

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

	switch (hdev->product) {
	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
		/* Set Wacom mode 2 with high reporting speed */
		wacom_poke(hdev, 1);
		break;
	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
		wdata->features = 0;
		wacom_set_features(hdev);
		break;
	}

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	wdata->battery.properties = wacom_battery_props;
	wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
	wdata->battery.get_property = wacom_battery_get_property;
	wdata->battery.name = "wacom_battery";
	wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
	wdata->battery.use_for_apm = 0;

	ret = power_supply_register(&hdev->dev, &wdata->battery);
	if (ret) {
		hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n",
			 ret);
		goto err_battery;
	}

	wdata->ac.properties = wacom_ac_props;
	wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
	wdata->ac.get_property = wacom_ac_get_property;
	wdata->ac.name = "wacom_ac";
	wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
	wdata->ac.use_for_apm = 0;

	ret = power_supply_register(&hdev->dev, &wdata->ac);
	if (ret) {
		hid_warn(hdev,
			 "can't create ac battery attribute, err: %d\n", ret);
		goto err_ac;
	}
#endif
	return 0;

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
err_ac:
	power_supply_unregister(&wdata->battery);
err_battery:
	device_remove_file(&hdev->dev, &dev_attr_speed);
	hid_hw_stop(hdev);
#endif
err_free:
	kfree(wdata);
	return ret;
}

static void wacom_remove(struct hid_device *hdev)
{
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	struct wacom_data *wdata = hid_get_drvdata(hdev);
#endif
	device_remove_file(&hdev->dev, &dev_attr_speed);
	hid_hw_stop(hdev);

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	power_supply_unregister(&wdata->battery);
	power_supply_unregister(&wdata->ac);
#endif
	kfree(hid_get_drvdata(hdev));
}

static const struct hid_device_id wacom_devices[] = {
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },

	{ }
};
MODULE_DEVICE_TABLE(hid, wacom_devices);

static struct hid_driver wacom_driver = {
	.name = "wacom",
	.id_table = wacom_devices,
	.probe = wacom_probe,
	.remove = wacom_remove,
	.raw_event = wacom_raw_event,
	.input_mapped = wacom_input_mapped,
};

static int __init wacom_init(void)
{
	int ret;

	ret = hid_register_driver(&wacom_driver);
	if (ret)
		pr_err("can't register wacom driver\n");
	return ret;
}

static void __exit wacom_exit(void)
{
	hid_unregister_driver(&wacom_driver);
}

module_init(wacom_init);
module_exit(wacom_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
ca2dcd40 BN	1	/*
	2	* Bluetooth Wacom Tablet support
	3	*
	4	* Copyright (c) 1999 Andreas Gal
	5	* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
	6	* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
	7	* Copyright (c) 2006-2007 Jiri Kosina
	8	* Copyright (c) 2007 Paul Walmsley
	9	* Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
	10	* Copyright (c) 2006 Andrew Zabolotny <zap@homelink.ru>
	11	* Copyright (c) 2009 Bastien Nocera <hadess@hadess.net>
78761ff9	12	* Copyright (c) 2011 Przemysław Firszt <przemo@firszt.eu>
ca2dcd40 BN	13	*/
	14
	15	/*
	16	* This program is free software; you can redistribute it and/or modify it
	17	* under the terms of the GNU General Public License as published by the Free
	18	* Software Foundation; either version 2 of the License, or (at your option)
	19	* any later version.
	20	*/
	21
4291ee30 JP	22	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
4291ee30 JP	23
ca2dcd40 BN	24	#include <linux/device.h>
	25	#include <linux/hid.h>
	26	#include <linux/module.h>
5a0e3ad6	27	#include <linux/slab.h>
59d2334a PF	28	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	29	#include <linux/power_supply.h>
	30	#endif
ca2dcd40 BN	31
	32	#include "hid-ids.h"
	33
	34	struct wacom_data {
	35	__u16 tool;
	36	unsigned char butstate;
78761ff9	37	__u8 features;
20a3ce7e	38	unsigned char high_speed;
59d2334a PF	39	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	40	int battery_capacity;
	41	struct power_supply battery;
	42	struct power_supply ac;
	43	#endif
ca2dcd40 BN	44	};
ca2dcd40 BN	45
59d2334a PF	46	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	47	/percent of battery capacity, 0 means AC online/
	48	static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };
	49
	50	static enum power_supply_property wacom_battery_props[] = {
	51	POWER_SUPPLY_PROP_PRESENT,
	52	POWER_SUPPLY_PROP_CAPACITY
	53	};
	54
	55	static enum power_supply_property wacom_ac_props[] = {
	56	POWER_SUPPLY_PROP_PRESENT,
	57	POWER_SUPPLY_PROP_ONLINE
	58	};
	59
	60	static int wacom_battery_get_property(struct power_supply *psy,
	61	enum power_supply_property psp,
	62	union power_supply_propval *val)
	63	{
	64	struct wacom_data *wdata = container_of(psy,
	65	struct wacom_data, battery);
	66	int power_state = batcap[wdata->battery_capacity];
	67	int ret = 0;
	68
	69	switch (psp) {
	70	case POWER_SUPPLY_PROP_PRESENT:
	71	val->intval = 1;
	72	break;
	73	case POWER_SUPPLY_PROP_CAPACITY:
	74	/* show 100% battery capacity when charging */
	75	if (power_state == 0)
	76	val->intval = 100;
	77	else
	78	val->intval = power_state;
	79	break;
	80	default:
	81	ret = -EINVAL;
	82	break;
	83	}
	84	return ret;
	85	}
	86
	87	static int wacom_ac_get_property(struct power_supply *psy,
	88	enum power_supply_property psp,
	89	union power_supply_propval *val)
	90	{
	91	struct wacom_data *wdata = container_of(psy, struct wacom_data, ac);
	92	int power_state = batcap[wdata->battery_capacity];
	93	int ret = 0;
	94
	95	switch (psp) {
	96	case POWER_SUPPLY_PROP_PRESENT:
	97	/* fall through */
	98	case POWER_SUPPLY_PROP_ONLINE:
	99	if (power_state == 0)
	100	val->intval = 1;
	101	else
	102	val->intval = 0;
	103	break;
	104	default:
	105	ret = -EINVAL;
	106	break;
	107	}
	108	return ret;
	109	}
110	#endif
111
78761ff9 PF	112	static void wacom_set_features(struct hid_device *hdev)
	113	{
	114	int ret;
	115	__u8 rep_data[2];
	116
	117	/set high speed, tablet mode/
	118	rep_data[0] = 0x03;
	119	rep_data[1] = 0x20;
	120	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	121	HID_FEATURE_REPORT);
	122	return;
	123	}
	124
06c7c313 PF	125	static void wacom_poke(struct hid_device *hdev, u8 speed)
06c7c313 PF	126	{
20a3ce7e	127	struct wacom_data *wdata = hid_get_drvdata(hdev);
06c7c313 PF	128	int limit, ret;
	129	char rep_data[2];
	130
	131	rep_data[0] = 0x03 ; rep_data[1] = 0x00;
	132	limit = 3;
	133	do {
	134	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	135	HID_FEATURE_REPORT);
	136	} while (ret < 0 && limit-- > 0);
	137
	138	if (ret >= 0) {
	139	if (speed == 0)
	140	rep_data[0] = 0x05;
	141	else
	142	rep_data[0] = 0x06;
	143
	144	rep_data[1] = 0x00;
	145	limit = 3;
	146	do {
	147	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	148	HID_FEATURE_REPORT);
	149	} while (ret < 0 && limit-- > 0);
	150
20a3ce7e PF	151	if (ret >= 0) {
20a3ce7e PF	152	wdata->high_speed = speed;
06c7c313	153	return;
20a3ce7e	154	}
06c7c313 PF	155	}
	156
	157	/*
	158	* Note that if the raw queries fail, it's not a hard failure and it
	159	* is safe to continue
	160	*/
4291ee30 JP	161	hid_warn(hdev, "failed to poke device, command %d, err %d\n",
4291ee30 JP	162	rep_data[0], ret);
06c7c313 PF	163	return;
	164	}
	165
20a3ce7e PF	166	static ssize_t wacom_show_speed(struct device *dev,
	167	struct device_attribute
	168	attr, char buf)
	169	{
	170	struct wacom_data *wdata = dev_get_drvdata(dev);
	171
	172	return snprintf(buf, PAGE_SIZE, "%i\n", wdata->high_speed);
	173	}
	174
	175	static ssize_t wacom_store_speed(struct device *dev,
	176	struct device_attribute *attr,
	177	const char *buf, size_t count)
	178	{
	179	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
	180	int new_speed;
	181
	182	if (sscanf(buf, "%1d", &new_speed ) != 1)
	183	return -EINVAL;
	184
	185	if (new_speed == 0 \|\| new_speed == 1) {
	186	wacom_poke(hdev, new_speed);
	187	return strnlen(buf, PAGE_SIZE);
	188	} else
	189	return -EINVAL;
	190	}
	191
edd2126a	192	static DEVICE_ATTR(speed, S_IRUGO \| S_IWUSR \| S_IWGRP,
20a3ce7e PF	193	wacom_show_speed, wacom_store_speed);
20a3ce7e PF	194
f6b7efc1 PF	195	static int wacom_gr_parse_report(struct hid_device *hdev,
	196	struct wacom_data *wdata,
	197	struct input_dev input, unsigned char data)
ca2dcd40	198	{
ca2dcd40 BN	199	int tool, x, y, rw;
ca2dcd40 BN	200
ca2dcd40	201	tool = 0;
ca2dcd40 BN	202	/* Get X & Y positions */
	203	x = le16_to_cpu((__le16 ) &data[2]);
	204	y = le16_to_cpu((__le16 ) &data[4]);
	205
	206	/* Get current tool identifier */
	207	if (data[1] & 0x90) { /* If pen is in the in/active area */
	208	switch ((data[1] >> 5) & 3) {
	209	case 0: /* Pen */
	210	tool = BTN_TOOL_PEN;
	211	break;
	212
	213	case 1: /* Rubber */
	214	tool = BTN_TOOL_RUBBER;
	215	break;
	216
	217	case 2: /* Mouse with wheel */
	218	case 3: /* Mouse without wheel */
	219	tool = BTN_TOOL_MOUSE;
	220	break;
	221	}
	222
	223	/* Reset tool if out of active tablet area */
	224	if (!(data[1] & 0x10))
	225	tool = 0;
	226	}
	227
	228	/* If tool changed, notify input subsystem */
	229	if (wdata->tool != tool) {
	230	if (wdata->tool) {
	231	/* Completely reset old tool state */
	232	if (wdata->tool == BTN_TOOL_MOUSE) {
	233	input_report_key(input, BTN_LEFT, 0);
	234	input_report_key(input, BTN_RIGHT, 0);
	235	input_report_key(input, BTN_MIDDLE, 0);
	236	input_report_abs(input, ABS_DISTANCE,
987a6c02	237	input_abs_get_max(input, ABS_DISTANCE));
ca2dcd40 BN	238	} else {
	239	input_report_key(input, BTN_TOUCH, 0);
	240	input_report_key(input, BTN_STYLUS, 0);
	241	input_report_key(input, BTN_STYLUS2, 0);
	242	input_report_abs(input, ABS_PRESSURE, 0);
	243	}
	244	input_report_key(input, wdata->tool, 0);
	245	input_sync(input);
	246	}
	247	wdata->tool = tool;
	248	if (tool)
	249	input_report_key(input, tool, 1);
	250	}
	251
	252	if (tool) {
	253	input_report_abs(input, ABS_X, x);
	254	input_report_abs(input, ABS_Y, y);
	255
	256	switch ((data[1] >> 5) & 3) {
	257	case 2: /* Mouse with wheel */
	258	input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
	259	rw = (data[6] & 0x01) ? -1 :
	260	(data[6] & 0x02) ? 1 : 0;
	261	input_report_rel(input, REL_WHEEL, rw);
	262	/* fall through */
	263
	264	case 3: /* Mouse without wheel */
	265	input_report_key(input, BTN_LEFT, data[1] & 0x01);
	266	input_report_key(input, BTN_RIGHT, data[1] & 0x02);
	267	/* Compute distance between mouse and tablet */
	268	rw = 44 - (data[6] >> 2);
	269	if (rw < 0)
	270	rw = 0;
	271	else if (rw > 31)
	272	rw = 31;
	273	input_report_abs(input, ABS_DISTANCE, rw);
	274	break;
	275
	276	default:
	277	input_report_abs(input, ABS_PRESSURE,
	278	data[6] \| (((__u16) (data[1] & 0x08)) << 5));
	279	input_report_key(input, BTN_TOUCH, data[1] & 0x01);
	280	input_report_key(input, BTN_STYLUS, data[1] & 0x02);
	281	input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04);
	282	break;
	283	}
	284
	285	input_sync(input);
	286	}
	287
	288	/* Report the state of the two buttons at the top of the tablet
	289	* as two extra fingerpad keys (buttons 4 & 5). */
	290	rw = data[7] & 0x03;
	291	if (rw != wdata->butstate) {
	292	wdata->butstate = rw;
	293	input_report_key(input, BTN_0, rw & 0x02);
	294	input_report_key(input, BTN_1, rw & 0x01);
0e253fdb	295	input_report_key(input, BTN_TOOL_FINGER, 0xf0);
ca2dcd40 BN	296	input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
	297	input_sync(input);
	298	}
	299
59d2334a PF	300	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	301	/* Store current battery capacity */
	302	rw = (data[7] >> 2 & 0x07);
	303	if (rw != wdata->battery_capacity)
	304	wdata->battery_capacity = rw;
	305	#endif
ca2dcd40 BN	306	return 1;
ca2dcd40 BN	307	}
78761ff9 PF	308
	309	static void wacom_i4_parse_pen_report(struct wacom_data *wdata,
	310	struct input_dev input, unsigned char data)
	311	{
	312	__u16 x, y, pressure;
	313	__u32 id;
	314
	315	switch (data[1]) {
	316	case 0x80: /* Out of proximity report */
	317	wdata->tool = 0;
	318	input_report_key(input, BTN_TOUCH, 0);
	319	input_report_abs(input, ABS_PRESSURE, 0);
	320	input_report_key(input, wdata->tool, 0);
	321	input_sync(input);
	322	break;
	323	case 0xC2: /* Tool report */
	324	id = ((data[2] << 4) \| (data[3] >> 4) \|
	325	((data[7] & 0x0f) << 20) \|
	326	((data[8] & 0xf0) << 12)) & 0xfffff;
	327
	328	switch (id) {
	329	case 0x802:
	330	wdata->tool = BTN_TOOL_PEN;
	331	break;
	332	case 0x80A:
	333	wdata->tool = BTN_TOOL_RUBBER;
	334	break;
	335	}
	336	break;
	337	default: /* Position/pressure report */
	338	x = data[2] << 9 \| data[3] << 1 \| ((data[9] & 0x02) >> 1);
	339	y = data[4] << 9 \| data[5] << 1 \| (data[9] & 0x01);
	340	pressure = (data[6] << 3) \| ((data[7] & 0xC0) >> 5)
	341	\| (data[1] & 0x01);
	342
	343	input_report_key(input, BTN_TOUCH, pressure > 1);
	344
	345	input_report_key(input, BTN_STYLUS, data[1] & 0x02);
	346	input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
	347	input_report_key(input, wdata->tool, 1);
	348	input_report_abs(input, ABS_X, x);
	349	input_report_abs(input, ABS_Y, y);
	350	input_report_abs(input, ABS_PRESSURE, pressure);
	351	input_sync(input);
	352	break;
	353	}
	354
	355	return;
	356	}
	357
	358	static void wacom_i4_parse_report(struct hid_device *hdev,
	359	struct wacom_data *wdata,
	360	struct input_dev input, unsigned char data)
	361	{
	362	switch (data[0]) {
	363	case 0x00: /* Empty report */
	364	break;
	365	case 0x02: /* Pen report */
	366	wacom_i4_parse_pen_report(wdata, input, data);
	367	break;
	368	case 0x03: /* Features Report */
	369	wdata->features = data[2];
	370	break;
	371	case 0x0C: /* Button report */
372	break;
373	default:
374	hid_err(hdev, "Unknown report: %d,%d\n", data[0], data[1]);
375	break;
376	}
377	}
378
f6b7efc1 PF	379	static int wacom_raw_event(struct hid_device hdev, struct hid_report report,
	380	u8 *raw_data, int size)
	381	{
	382	struct wacom_data *wdata = hid_get_drvdata(hdev);
	383	struct hid_input *hidinput;
	384	struct input_dev *input;
	385	unsigned char data = (unsigned char ) raw_data;
78761ff9	386	int i;
f6b7efc1 PF	387
	388	if (!(hdev->claimed & HID_CLAIMED_INPUT))
	389	return 0;
	390
	391	hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
	392	input = hidinput->input;
	393
	394	/* Check if this is a tablet report */
	395	if (data[0] != 0x03)
	396	return 0;
	397
78761ff9 PF	398	switch (hdev->product) {
	399	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
	400	return wacom_gr_parse_report(hdev, wdata, input, data);
	401	break;
	402	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
	403	i = 1;
	404
	405	switch (data[0]) {
	406	case 0x04:
	407	wacom_i4_parse_report(hdev, wdata, input, data + i);
	408	i += 10;
	409	/* fall through */
	410	case 0x03:
	411	wacom_i4_parse_report(hdev, wdata, input, data + i);
	412	i += 10;
	413	wacom_i4_parse_report(hdev, wdata, input, data + i);
	414	break;
	415	default:
	416	hid_err(hdev, "Unknown report: %d,%d size:%d\n",
	417	data[0], data[1], size);
	418	return 0;
	419	}
	420	}
	421	return 1;
f6b7efc1	422	}
ca2dcd40	423
3797ef6b DH	424	static int wacom_input_mapped(struct hid_device hdev, struct hid_input hi,
	425	struct hid_field field, struct hid_usage usage, unsigned long **bit,
	426	int *max)
	427	{
	428	struct input_dev *input = hi->input;
	429
f6f12427 JK	430	__set_bit(INPUT_PROP_POINTER, input->propbit);
f6f12427 JK	431
3797ef6b DH	432	/* Basics */
	433	input->evbit[0] \|= BIT(EV_KEY) \| BIT(EV_ABS) \| BIT(EV_REL);
	434
	435	__set_bit(REL_WHEEL, input->relbit);
	436
	437	__set_bit(BTN_TOOL_PEN, input->keybit);
	438	__set_bit(BTN_TOUCH, input->keybit);
	439	__set_bit(BTN_STYLUS, input->keybit);
	440	__set_bit(BTN_STYLUS2, input->keybit);
	441	__set_bit(BTN_LEFT, input->keybit);
	442	__set_bit(BTN_RIGHT, input->keybit);
	443	__set_bit(BTN_MIDDLE, input->keybit);
	444
	445	/* Pad */
	446	input->evbit[0] \|= BIT(EV_MSC);
	447
	448	__set_bit(MSC_SERIAL, input->mscbit);
	449
	450	__set_bit(BTN_0, input->keybit);
	451	__set_bit(BTN_1, input->keybit);
	452	__set_bit(BTN_TOOL_FINGER, input->keybit);
	453
	454	/* Distance, rubber and mouse */
	455	__set_bit(BTN_TOOL_RUBBER, input->keybit);
	456	__set_bit(BTN_TOOL_MOUSE, input->keybit);
	457
78761ff9 PF	458	switch (hdev->product) {
	459	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
	460	input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
	461	input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
	462	input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
	463	input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
	464	break;
	465	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
	466	input_set_abs_params(input, ABS_X, 0, 40640, 4, 0);
	467	input_set_abs_params(input, ABS_Y, 0, 25400, 4, 0);
	468	input_set_abs_params(input, ABS_PRESSURE, 0, 2047, 0, 0);
	469	break;
	470	}
3797ef6b DH	471
	472	return 0;
	473	}
	474
ca2dcd40 BN	475	static int wacom_probe(struct hid_device *hdev,
	476	const struct hid_device_id *id)
	477	{
ca2dcd40 BN	478	struct wacom_data *wdata;
	479	int ret;
	480
	481	wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
	482	if (wdata == NULL) {
4291ee30	483	hid_err(hdev, "can't alloc wacom descriptor\n");
ca2dcd40 BN	484	return -ENOMEM;
	485	}
	486
	487	hid_set_drvdata(hdev, wdata);
	488
46a709b9	489	/* Parse the HID report now */
ca2dcd40 BN	490	ret = hid_parse(hdev);
ca2dcd40 BN	491	if (ret) {
4291ee30	492	hid_err(hdev, "parse failed\n");
ca2dcd40 BN	493	goto err_free;
	494	}
	495
	496	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	497	if (ret) {
4291ee30	498	hid_err(hdev, "hw start failed\n");
ca2dcd40 BN	499	goto err_free;
	500	}
	501
20a3ce7e PF	502	ret = device_create_file(&hdev->dev, &dev_attr_speed);
20a3ce7e PF	503	if (ret)
4291ee30 JP	504	hid_warn(hdev,
4291ee30 JP	505	"can't create sysfs speed attribute err: %d\n", ret);
342f31e8	506
78761ff9 PF	507	switch (hdev->product) {
	508	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
	509	/* Set Wacom mode 2 with high reporting speed */
	510	wacom_poke(hdev, 1);
	511	break;
	512	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
	513	wdata->features = 0;
	514	wacom_set_features(hdev);
	515	break;
	516	}
46a709b9	517
59d2334a PF	518	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	519	wdata->battery.properties = wacom_battery_props;
	520	wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
	521	wdata->battery.get_property = wacom_battery_get_property;
	522	wdata->battery.name = "wacom_battery";
	523	wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
	524	wdata->battery.use_for_apm = 0;
46a709b9	525
59d2334a PF	526	ret = power_supply_register(&hdev->dev, &wdata->battery);
59d2334a PF	527	if (ret) {
4291ee30 JP	528	hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n",
4291ee30 JP	529	ret);
dde58cfc	530	goto err_battery;
59d2334a PF	531	}
	532
	533	wdata->ac.properties = wacom_ac_props;
	534	wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
	535	wdata->ac.get_property = wacom_ac_get_property;
	536	wdata->ac.name = "wacom_ac";
	537	wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
	538	wdata->ac.use_for_apm = 0;
	539
	540	ret = power_supply_register(&hdev->dev, &wdata->ac);
	541	if (ret) {
4291ee30 JP	542	hid_warn(hdev,
4291ee30 JP	543	"can't create ac battery attribute, err: %d\n", ret);
dde58cfc	544	goto err_ac;
59d2334a	545	}
59d2334a	546	#endif
ca2dcd40	547	return 0;
987a6c02	548
dde58cfc DH	549	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	550	err_ac:
	551	power_supply_unregister(&wdata->battery);
	552	err_battery:
	553	device_remove_file(&hdev->dev, &dev_attr_speed);
	554	hid_hw_stop(hdev);
	555	#endif
ca2dcd40 BN	556	err_free:
	557	kfree(wdata);
	558	return ret;
	559	}
	560
	561	static void wacom_remove(struct hid_device *hdev)
	562	{
59d2334a PF	563	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	564	struct wacom_data *wdata = hid_get_drvdata(hdev);
	565	#endif
9086617e	566	device_remove_file(&hdev->dev, &dev_attr_speed);
ca2dcd40	567	hid_hw_stop(hdev);
59d2334a PF	568
	569	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	570	power_supply_unregister(&wdata->battery);
	571	power_supply_unregister(&wdata->ac);
	572	#endif
ca2dcd40 BN	573	kfree(hid_get_drvdata(hdev));
	574	}
	575
	576	static const struct hid_device_id wacom_devices[] = {
	577	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
78761ff9	578	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
d5e0a06f	579
ca2dcd40 BN	580	{ }
	581	};
	582	MODULE_DEVICE_TABLE(hid, wacom_devices);
	583
	584	static struct hid_driver wacom_driver = {
	585	.name = "wacom",
	586	.id_table = wacom_devices,
	587	.probe = wacom_probe,
	588	.remove = wacom_remove,
	589	.raw_event = wacom_raw_event,
3797ef6b	590	.input_mapped = wacom_input_mapped,
ca2dcd40 BN	591	};
ca2dcd40 BN	592
a24f423b	593	static int __init wacom_init(void)
ca2dcd40 BN	594	{
	595	int ret;
	596
	597	ret = hid_register_driver(&wacom_driver);
	598	if (ret)
4291ee30	599	pr_err("can't register wacom driver\n");
ca2dcd40 BN	600	return ret;
	601	}
	602
a24f423b	603	static void __exit wacom_exit(void)
ca2dcd40 BN	604	{
	605	hid_unregister_driver(&wacom_driver);
	606	}
	607
	608	module_init(wacom_init);
	609	module_exit(wacom_exit);
	610	MODULE_LICENSE("GPL");
	611