[GitHub/mt8127/android_kernel_alcatel_ttab.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>
 */

/*
 * 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 <linux/device.h>
#include <linux/hid.h>
#include <linux/module.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;
#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_poke(struct hid_device *hdev, u8 speed)
{
	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)
			return;
	}

	/*
	 * Note that if the raw queries fail, it's not a hard failure and it
	 * is safe to continue
	 */
	dev_warn(&hdev->dev, "failed to poke device, command %d, err %d\n",
				rep_data[0], ret);
	return;
}

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 tool, x, y, rw;

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

	tool = 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;

	/* 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->absmax[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 int wacom_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
{
	struct hid_input *hidinput;
	struct input_dev *input;
	struct wacom_data *wdata;
	int ret;

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

	hid_set_drvdata(hdev, wdata);

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

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		dev_err(&hdev->dev, "hw start failed\n");
		goto err_free;
	}

	/* Set Wacom mode 2 with high reporting speed */
	wacom_poke(hdev, 1);

#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) {
		dev_warn(&hdev->dev,
			"can't create sysfs battery attribute, err: %d\n", ret);
		/*
		 * battery attribute is not critical for the tablet, but if it
		 * failed then there is no need to create ac attribute
		 */
		goto move_on;
	}

	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) {
		dev_warn(&hdev->dev,
			"can't create ac battery attribute, err: %d\n", ret);
		/*
		 * ac attribute is not critical for the tablet, but if it
		 * failed then we don't want to battery attribute to exist
		 */
		power_supply_unregister(&wdata->battery);
	}

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

	/* Basics */
	input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);
	input->absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) |
		BIT(ABS_PRESSURE) | BIT(ABS_DISTANCE);
	input->relbit[0] |= BIT(REL_WHEEL);
	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);
	input->mscbit[0] |= BIT(MSC_SERIAL);
	set_bit(BTN_0, input->keybit);
	set_bit(BTN_1, input->keybit);
	set_bit(BTN_TOOL_FINGER, input->keybit);

	/* Distance, rubber and mouse */
	input->absbit[0] |= BIT(ABS_DISTANCE);
	set_bit(BTN_TOOL_RUBBER, input->keybit);
	set_bit(BTN_TOOL_MOUSE, input->keybit);

	input->absmax[ABS_PRESSURE] = 511;
	input->absmax[ABS_DISTANCE] = 32;

	input->absmax[ABS_X] = 16704;
	input->absmax[ABS_Y] = 12064;
	input->absfuzz[ABS_X] = 4;
	input->absfuzz[ABS_Y] = 4;

	return 0;
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
	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) },

	{ }
};
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,
};

static int __init wacom_init(void)
{
	int ret;

	ret = hid_register_driver(&wacom_driver);
	if (ret)
		printk(KERN_ERR "can't register wacom driver\n");
	printk(KERN_ERR "wacom driver registered\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>
	12	*/
	13
	14	/*
	15	* This program is free software; you can redistribute it and/or modify it
	16	* under the terms of the GNU General Public License as published by the Free
	17	* Software Foundation; either version 2 of the License, or (at your option)
	18	* any later version.
	19	*/
	20
	21	#include <linux/device.h>
	22	#include <linux/hid.h>
	23	#include <linux/module.h>
59d2334a PF	24	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	25	#include <linux/power_supply.h>
	26	#endif
ca2dcd40 BN	27
	28	#include "hid-ids.h"
	29
	30	struct wacom_data {
	31	__u16 tool;
	32	unsigned char butstate;
59d2334a PF	33	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	34	int battery_capacity;
	35	struct power_supply battery;
	36	struct power_supply ac;
	37	#endif
ca2dcd40 BN	38	};
ca2dcd40 BN	39
59d2334a PF	40	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	41	/percent of battery capacity, 0 means AC online/
	42	static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };
	43
	44	static enum power_supply_property wacom_battery_props[] = {
	45	POWER_SUPPLY_PROP_PRESENT,
	46	POWER_SUPPLY_PROP_CAPACITY
	47	};
	48
	49	static enum power_supply_property wacom_ac_props[] = {
	50	POWER_SUPPLY_PROP_PRESENT,
	51	POWER_SUPPLY_PROP_ONLINE
	52	};
	53
	54	static int wacom_battery_get_property(struct power_supply *psy,
	55	enum power_supply_property psp,
	56	union power_supply_propval *val)
	57	{
	58	struct wacom_data *wdata = container_of(psy,
	59	struct wacom_data, battery);
	60	int power_state = batcap[wdata->battery_capacity];
	61	int ret = 0;
	62
	63	switch (psp) {
	64	case POWER_SUPPLY_PROP_PRESENT:
	65	val->intval = 1;
	66	break;
	67	case POWER_SUPPLY_PROP_CAPACITY:
	68	/* show 100% battery capacity when charging */
	69	if (power_state == 0)
	70	val->intval = 100;
	71	else
	72	val->intval = power_state;
	73	break;
	74	default:
	75	ret = -EINVAL;
	76	break;
	77	}
	78	return ret;
	79	}
	80
	81	static int wacom_ac_get_property(struct power_supply *psy,
	82	enum power_supply_property psp,
	83	union power_supply_propval *val)
	84	{
	85	struct wacom_data *wdata = container_of(psy, struct wacom_data, ac);
	86	int power_state = batcap[wdata->battery_capacity];
	87	int ret = 0;
	88
	89	switch (psp) {
	90	case POWER_SUPPLY_PROP_PRESENT:
	91	/* fall through */
	92	case POWER_SUPPLY_PROP_ONLINE:
	93	if (power_state == 0)
	94	val->intval = 1;
	95	else
	96	val->intval = 0;
	97	break;
	98	default:
	99	ret = -EINVAL;
	100	break;
	101	}
	102	return ret;
	103	}
104	#endif
105
06c7c313 PF	106	static void wacom_poke(struct hid_device *hdev, u8 speed)
	107	{
	108	int limit, ret;
	109	char rep_data[2];
	110
	111	rep_data[0] = 0x03 ; rep_data[1] = 0x00;
	112	limit = 3;
	113	do {
	114	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	115	HID_FEATURE_REPORT);
	116	} while (ret < 0 && limit-- > 0);
	117
	118	if (ret >= 0) {
	119	if (speed == 0)
	120	rep_data[0] = 0x05;
	121	else
	122	rep_data[0] = 0x06;
	123
	124	rep_data[1] = 0x00;
	125	limit = 3;
	126	do {
	127	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	128	HID_FEATURE_REPORT);
	129	} while (ret < 0 && limit-- > 0);
	130
	131	if (ret >= 0)
	132	return;
	133	}
	134
	135	/*
	136	* Note that if the raw queries fail, it's not a hard failure and it
	137	* is safe to continue
	138	*/
	139	dev_warn(&hdev->dev, "failed to poke device, command %d, err %d\n",
	140	rep_data[0], ret);
	141	return;
	142	}
	143
ca2dcd40 BN	144	static int wacom_raw_event(struct hid_device hdev, struct hid_report report,
	145	u8 *raw_data, int size)
	146	{
	147	struct wacom_data *wdata = hid_get_drvdata(hdev);
	148	struct hid_input *hidinput;
	149	struct input_dev *input;
	150	unsigned char data = (unsigned char ) raw_data;
	151	int tool, x, y, rw;
	152
	153	if (!(hdev->claimed & HID_CLAIMED_INPUT))
	154	return 0;
	155
	156	tool = 0;
	157	hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
	158	input = hidinput->input;
	159
	160	/* Check if this is a tablet report */
	161	if (data[0] != 0x03)
	162	return 0;
	163
	164	/* Get X & Y positions */
	165	x = le16_to_cpu((__le16 ) &data[2]);
	166	y = le16_to_cpu((__le16 ) &data[4]);
	167
	168	/* Get current tool identifier */
	169	if (data[1] & 0x90) { /* If pen is in the in/active area */
	170	switch ((data[1] >> 5) & 3) {
	171	case 0: /* Pen */
	172	tool = BTN_TOOL_PEN;
	173	break;
	174
	175	case 1: /* Rubber */
	176	tool = BTN_TOOL_RUBBER;
	177	break;
	178
	179	case 2: /* Mouse with wheel */
	180	case 3: /* Mouse without wheel */
	181	tool = BTN_TOOL_MOUSE;
	182	break;
	183	}
	184
	185	/* Reset tool if out of active tablet area */
	186	if (!(data[1] & 0x10))
	187	tool = 0;
	188	}
	189
	190	/* If tool changed, notify input subsystem */
	191	if (wdata->tool != tool) {
	192	if (wdata->tool) {
	193	/* Completely reset old tool state */
	194	if (wdata->tool == BTN_TOOL_MOUSE) {
	195	input_report_key(input, BTN_LEFT, 0);
	196	input_report_key(input, BTN_RIGHT, 0);
	197	input_report_key(input, BTN_MIDDLE, 0);
	198	input_report_abs(input, ABS_DISTANCE,
	199	input->absmax[ABS_DISTANCE]);
	200	} else {
	201	input_report_key(input, BTN_TOUCH, 0);
	202	input_report_key(input, BTN_STYLUS, 0);
	203	input_report_key(input, BTN_STYLUS2, 0);
	204	input_report_abs(input, ABS_PRESSURE, 0);
	205	}
	206	input_report_key(input, wdata->tool, 0);
	207	input_sync(input);
208	}
209	wdata->tool = tool;
210	if (tool)
211	input_report_key(input, tool, 1);
212	}
213
214	if (tool) {
215	input_report_abs(input, ABS_X, x);
216	input_report_abs(input, ABS_Y, y);
217
218	switch ((data[1] >> 5) & 3) {
219	case 2: /* Mouse with wheel */
220	input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
221	rw = (data[6] & 0x01) ? -1 :
222	(data[6] & 0x02) ? 1 : 0;
223	input_report_rel(input, REL_WHEEL, rw);
224	/* fall through */
225
226	case 3: /* Mouse without wheel */
227	input_report_key(input, BTN_LEFT, data[1] & 0x01);
228	input_report_key(input, BTN_RIGHT, data[1] & 0x02);
229	/* Compute distance between mouse and tablet */
230	rw = 44 - (data[6] >> 2);
231	if (rw < 0)
232	rw = 0;
233	else if (rw > 31)
234	rw = 31;
235	input_report_abs(input, ABS_DISTANCE, rw);
236	break;
237
238	default:
239	input_report_abs(input, ABS_PRESSURE,
240	data[6] \| (((__u16) (data[1] & 0x08)) << 5));
241	input_report_key(input, BTN_TOUCH, data[1] & 0x01);
242	input_report_key(input, BTN_STYLUS, data[1] & 0x02);
243	input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04);
244	break;
245	}
246
247	input_sync(input);
248	}
249
250	/* Report the state of the two buttons at the top of the tablet
251	* as two extra fingerpad keys (buttons 4 & 5). */
252	rw = data[7] & 0x03;
253	if (rw != wdata->butstate) {
254	wdata->butstate = rw;
255	input_report_key(input, BTN_0, rw & 0x02);
256	input_report_key(input, BTN_1, rw & 0x01);
0e253fdb	257	input_report_key(input, BTN_TOOL_FINGER, 0xf0);
ca2dcd40 BN	258	input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
	259	input_sync(input);
	260	}
	261
59d2334a PF	262	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	263	/* Store current battery capacity */
	264	rw = (data[7] >> 2 & 0x07);
	265	if (rw != wdata->battery_capacity)
	266	wdata->battery_capacity = rw;
	267	#endif
ca2dcd40 BN	268	return 1;
	269	}
	270
	271	static int wacom_probe(struct hid_device *hdev,
	272	const struct hid_device_id *id)
	273	{
	274	struct hid_input *hidinput;
	275	struct input_dev *input;
	276	struct wacom_data *wdata;
	277	int ret;
	278
	279	wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
	280	if (wdata == NULL) {
	281	dev_err(&hdev->dev, "can't alloc wacom descriptor\n");
	282	return -ENOMEM;
	283	}
	284
	285	hid_set_drvdata(hdev, wdata);
	286
46a709b9	287	/* Parse the HID report now */
ca2dcd40 BN	288	ret = hid_parse(hdev);
	289	if (ret) {
	290	dev_err(&hdev->dev, "parse failed\n");
	291	goto err_free;
	292	}
	293
	294	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	295	if (ret) {
	296	dev_err(&hdev->dev, "hw start failed\n");
	297	goto err_free;
	298	}
	299
06c7c313 PF	300	/* Set Wacom mode 2 with high reporting speed */
06c7c313 PF	301	wacom_poke(hdev, 1);
46a709b9	302
59d2334a PF	303	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	304	wdata->battery.properties = wacom_battery_props;
	305	wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
	306	wdata->battery.get_property = wacom_battery_get_property;
	307	wdata->battery.name = "wacom_battery";
	308	wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
	309	wdata->battery.use_for_apm = 0;
	310
	311	ret = power_supply_register(&hdev->dev, &wdata->battery);
	312	if (ret) {
	313	dev_warn(&hdev->dev,
	314	"can't create sysfs battery attribute, err: %d\n", ret);
	315	/*
	316	* battery attribute is not critical for the tablet, but if it
	317	* failed then there is no need to create ac attribute
	318	*/
	319	goto move_on;
	320	}
	321
	322	wdata->ac.properties = wacom_ac_props;
	323	wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
	324	wdata->ac.get_property = wacom_ac_get_property;
	325	wdata->ac.name = "wacom_ac";
	326	wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
	327	wdata->ac.use_for_apm = 0;
	328
	329	ret = power_supply_register(&hdev->dev, &wdata->ac);
	330	if (ret) {
	331	dev_warn(&hdev->dev,
	332	"can't create ac battery attribute, err: %d\n", ret);
	333	/*
	334	* ac attribute is not critical for the tablet, but if it
	335	* failed then we don't want to battery attribute to exist
	336	*/
	337	power_supply_unregister(&wdata->battery);
	338	}
	339
	340	move_on:
	341	#endif
ca2dcd40 BN	342	hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
	343	input = hidinput->input;
	344
	345	/* Basics */
	346	input->evbit[0] \|= BIT(EV_KEY) \| BIT(EV_ABS) \| BIT(EV_REL);
	347	input->absbit[0] \|= BIT(ABS_X) \| BIT(ABS_Y) \|
	348	BIT(ABS_PRESSURE) \| BIT(ABS_DISTANCE);
	349	input->relbit[0] \|= BIT(REL_WHEEL);
	350	set_bit(BTN_TOOL_PEN, input->keybit);
	351	set_bit(BTN_TOUCH, input->keybit);
	352	set_bit(BTN_STYLUS, input->keybit);
	353	set_bit(BTN_STYLUS2, input->keybit);
	354	set_bit(BTN_LEFT, input->keybit);
	355	set_bit(BTN_RIGHT, input->keybit);
	356	set_bit(BTN_MIDDLE, input->keybit);
	357
	358	/* Pad */
	359	input->evbit[0] \|= BIT(EV_MSC);
	360	input->mscbit[0] \|= BIT(MSC_SERIAL);
d01799b2 PF	361	set_bit(BTN_0, input->keybit);
	362	set_bit(BTN_1, input->keybit);
	363	set_bit(BTN_TOOL_FINGER, input->keybit);
ca2dcd40 BN	364
	365	/* Distance, rubber and mouse */
	366	input->absbit[0] \|= BIT(ABS_DISTANCE);
	367	set_bit(BTN_TOOL_RUBBER, input->keybit);
	368	set_bit(BTN_TOOL_MOUSE, input->keybit);
	369
	370	input->absmax[ABS_PRESSURE] = 511;
	371	input->absmax[ABS_DISTANCE] = 32;
	372
	373	input->absmax[ABS_X] = 16704;
	374	input->absmax[ABS_Y] = 12064;
	375	input->absfuzz[ABS_X] = 4;
	376	input->absfuzz[ABS_Y] = 4;
	377
	378	return 0;
	379	err_free:
	380	kfree(wdata);
	381	return ret;
	382	}
	383
	384	static void wacom_remove(struct hid_device *hdev)
	385	{
59d2334a PF	386	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	387	struct wacom_data *wdata = hid_get_drvdata(hdev);
	388	#endif
ca2dcd40	389	hid_hw_stop(hdev);
59d2334a PF	390
	391	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	392	power_supply_unregister(&wdata->battery);
	393	power_supply_unregister(&wdata->ac);
	394	#endif
ca2dcd40 BN	395	kfree(hid_get_drvdata(hdev));
	396	}
	397
	398	static const struct hid_device_id wacom_devices[] = {
	399	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
	400
	401	{ }
	402	};
	403	MODULE_DEVICE_TABLE(hid, wacom_devices);
	404
	405	static struct hid_driver wacom_driver = {
	406	.name = "wacom",
	407	.id_table = wacom_devices,
	408	.probe = wacom_probe,
	409	.remove = wacom_remove,
	410	.raw_event = wacom_raw_event,
	411	};
	412
a24f423b	413	static int __init wacom_init(void)
ca2dcd40 BN	414	{
	415	int ret;
	416
	417	ret = hid_register_driver(&wacom_driver);
	418	if (ret)
	419	printk(KERN_ERR "can't register wacom driver\n");
	420	printk(KERN_ERR "wacom driver registered\n");
	421	return ret;
	422	}
	423
a24f423b	424	static void __exit wacom_exit(void)
ca2dcd40 BN	425	{
	426	hid_unregister_driver(&wacom_driver);
	427	}
	428
	429	module_init(wacom_init);
	430	module_exit(wacom_exit);
	431	MODULE_LICENSE("GPL");
	432