[net-next-2.6.git] / drivers / hid / hid-3m-pct.c

/*
 *  HID driver for 3M PCT multitouch panels
 *
 *  Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
 *  Copyright (c) 2010      Henrik Rydberg <rydberg@euromail.se>
 *  Copyright (c) 2010      Canonical, Ltd.
 *
 */

/*
 * 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>
#include <linux/slab.h>
#include <linux/usb.h>

MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
MODULE_DESCRIPTION("3M PCT multitouch panels");
MODULE_LICENSE("GPL");

#include "hid-ids.h"

#define MAX_SLOTS		60
#define MAX_TRKID		USHRT_MAX
#define MAX_EVENTS		360

/* estimated signal-to-noise ratios */
#define SN_MOVE			2048
#define SN_WIDTH		128

struct mmm_finger {
	__s32 x, y, w, h;
	__u16 id;
	bool prev_touch;
	bool touch, valid;
};

struct mmm_data {
	struct mmm_finger f[MAX_SLOTS];
	__u16 id;
	__u8 curid;
	__u8 nexp, nreal;
	bool touch, valid;
};

static int mmm_input_mapping(struct hid_device *hdev, struct hid_input *hi,
		struct hid_field *field, struct hid_usage *usage,
		unsigned long **bit, int *max)
{
	int f1 = field->logical_minimum;
	int f2 = field->logical_maximum;
	int df = f2 - f1;

	switch (usage->hid & HID_USAGE_PAGE) {

	case HID_UP_BUTTON:
		return -1;

	case HID_UP_GENDESK:
		switch (usage->hid) {
		case HID_GD_X:
			hid_map_usage(hi, usage, bit, max,
					EV_ABS, ABS_MT_POSITION_X);
			input_set_abs_params(hi->input, ABS_MT_POSITION_X,
					     f1, f2, df / SN_MOVE, 0);
			/* touchscreen emulation */
			input_set_abs_params(hi->input, ABS_X,
					     f1, f2, df / SN_MOVE, 0);
			return 1;
		case HID_GD_Y:
			hid_map_usage(hi, usage, bit, max,
					EV_ABS, ABS_MT_POSITION_Y);
			input_set_abs_params(hi->input, ABS_MT_POSITION_Y,
					     f1, f2, df / SN_MOVE, 0);
			/* touchscreen emulation */
			input_set_abs_params(hi->input, ABS_Y,
					     f1, f2, df / SN_MOVE, 0);
			return 1;
		}
		return 0;

	case HID_UP_DIGITIZER:
		switch (usage->hid) {
		/* we do not want to map these: no input-oriented meaning */
		case 0x14:
		case 0x23:
		case HID_DG_INPUTMODE:
		case HID_DG_DEVICEINDEX:
		case HID_DG_CONTACTCOUNT:
		case HID_DG_CONTACTMAX:
		case HID_DG_INRANGE:
		case HID_DG_CONFIDENCE:
			return -1;
		case HID_DG_TIPSWITCH:
			/* touchscreen emulation */
			hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
			input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
			return 1;
		case HID_DG_WIDTH:
			hid_map_usage(hi, usage, bit, max,
					EV_ABS, ABS_MT_TOUCH_MAJOR);
			input_set_abs_params(hi->input, ABS_MT_TOUCH_MAJOR,
					     f1, f2, df / SN_WIDTH, 0);
			return 1;
		case HID_DG_HEIGHT:
			hid_map_usage(hi, usage, bit, max,
					EV_ABS, ABS_MT_TOUCH_MINOR);
			input_set_abs_params(hi->input, ABS_MT_TOUCH_MINOR,
					     f1, f2, df / SN_WIDTH, 0);
			input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
					0, 1, 0, 0);
			return 1;
		case HID_DG_CONTACTID:
			field->logical_maximum = MAX_TRKID;
			hid_map_usage(hi, usage, bit, max,
					EV_ABS, ABS_MT_TRACKING_ID);
			input_set_abs_params(hi->input, ABS_MT_TRACKING_ID,
					     0, MAX_TRKID, 0, 0);
			if (!hi->input->mt)
				input_mt_create_slots(hi->input, MAX_SLOTS);
			input_set_events_per_packet(hi->input, MAX_EVENTS);
			return 1;
		}
		/* let hid-input decide for the others */
		return 0;

	case 0xff000000:
		/* we do not want to map these: no input-oriented meaning */
		return -1;
	}

	return 0;
}

static int mmm_input_mapped(struct hid_device *hdev, struct hid_input *hi,
		struct hid_field *field, struct hid_usage *usage,
		unsigned long **bit, int *max)
{
	/* tell hid-input to skip setup of these event types */
	if (usage->type == EV_KEY || usage->type == EV_ABS)
		set_bit(usage->type, hi->input->evbit);
	return -1;
}

/*
 * this function is called when a whole packet has been received and processed,
 * so that it can decide what to send to the input layer.
 */
static void mmm_filter_event(struct mmm_data *md, struct input_dev *input)
{
	struct mmm_finger *oldest = 0;
	int i;
	for (i = 0; i < MAX_SLOTS; ++i) {
		struct mmm_finger *f = &md->f[i];
		if (!f->valid) {
			/* this finger is just placeholder data, ignore */
			continue;
		}
		input_mt_slot(input, i);
		if (f->touch) {
			/* this finger is on the screen */
			int wide = (f->w > f->h);
			/* divided by two to match visual scale of touch */
			int major = max(f->w, f->h) >> 1;
			int minor = min(f->w, f->h) >> 1;

			if (!f->prev_touch)
				f->id = md->id++;
			input_event(input, EV_ABS, ABS_MT_TRACKING_ID, f->id);
			input_event(input, EV_ABS, ABS_MT_POSITION_X, f->x);
			input_event(input, EV_ABS, ABS_MT_POSITION_Y, f->y);
			input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
			input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
			input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
			/* touchscreen emulation: pick the oldest contact */
			if (!oldest || ((f->id - oldest->id) & (SHRT_MAX + 1)))
				oldest = f;
		} else {
			/* this finger took off the screen */
			input_event(input, EV_ABS, ABS_MT_TRACKING_ID, -1);
		}
		f->prev_touch = f->touch;
		f->valid = 0;
	}

	/* touchscreen emulation */
	if (oldest) {
		input_event(input, EV_KEY, BTN_TOUCH, 1);
		input_event(input, EV_ABS, ABS_X, oldest->x);
		input_event(input, EV_ABS, ABS_Y, oldest->y);
	} else {
		input_event(input, EV_KEY, BTN_TOUCH, 0);
	}
	input_sync(input);
}

/*
 * this function is called upon all reports
 * so that we can accumulate contact point information,
 * and call input_mt_sync after each point.
 */
static int mmm_event(struct hid_device *hid, struct hid_field *field,
				struct hid_usage *usage, __s32 value)
{
	struct mmm_data *md = hid_get_drvdata(hid);
	/*
	 * strangely, this function can be called before
	 * field->hidinput is initialized!
	 */
	if (hid->claimed & HID_CLAIMED_INPUT) {
		struct input_dev *input = field->hidinput->input;
		switch (usage->hid) {
		case HID_DG_TIPSWITCH:
			md->touch = value;
			break;
		case HID_DG_CONFIDENCE:
			md->valid = value;
			break;
		case HID_DG_WIDTH:
			if (md->valid)
				md->f[md->curid].w = value;
			break;
		case HID_DG_HEIGHT:
			if (md->valid)
				md->f[md->curid].h = value;
			break;
		case HID_DG_CONTACTID:
			value = clamp_val(value, 0, MAX_SLOTS - 1);
			if (md->valid) {
				md->curid = value;
				md->f[value].touch = md->touch;
				md->f[value].valid = 1;
				md->nreal++;
			}
			break;
		case HID_GD_X:
			if (md->valid)
				md->f[md->curid].x = value;
			break;
		case HID_GD_Y:
			if (md->valid)
				md->f[md->curid].y = value;
			break;
		case HID_DG_CONTACTCOUNT:
			if (value)
				md->nexp = value;
			if (md->nreal >= md->nexp) {
				mmm_filter_event(md, input);
				md->nreal = 0;
			}
			break;
		}
	}

	/* we have handled the hidinput part, now remains hiddev */
	if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
		hid->hiddev_hid_event(hid, field, usage, value);

	return 1;
}

static int mmm_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int ret;
	struct mmm_data *md;

	hdev->quirks |= HID_QUIRK_NO_INPUT_SYNC;

	md = kzalloc(sizeof(struct mmm_data), GFP_KERNEL);
	if (!md) {
		dev_err(&hdev->dev, "cannot allocate 3M data\n");
		return -ENOMEM;
	}
	hid_set_drvdata(hdev, md);

	ret = hid_parse(hdev);
	if (!ret)
		ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);

	if (ret)
		kfree(md);
	return ret;
}

static void mmm_remove(struct hid_device *hdev)
{
	hid_hw_stop(hdev);
	kfree(hid_get_drvdata(hdev));
	hid_set_drvdata(hdev, NULL);
}

static const struct hid_device_id mmm_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
	{ }
};
MODULE_DEVICE_TABLE(hid, mmm_devices);

static const struct hid_usage_id mmm_grabbed_usages[] = {
	{ HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
	{ HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
};

static struct hid_driver mmm_driver = {
	.name = "3m-pct",
	.id_table = mmm_devices,
	.probe = mmm_probe,
	.remove = mmm_remove,
	.input_mapping = mmm_input_mapping,
	.input_mapped = mmm_input_mapped,
	.usage_table = mmm_grabbed_usages,
	.event = mmm_event,
};

static int __init mmm_init(void)
{
	return hid_register_driver(&mmm_driver);
}

static void __exit mmm_exit(void)
{
	hid_unregister_driver(&mmm_driver);
}

module_init(mmm_init);
module_exit(mmm_exit);
Commit	Line	Data
b6353f4f SC	1	/*
	2	* HID driver for 3M PCT multitouch panels
	3	*
6dec143a	4	* Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
1f01a1fe HR	5	* Copyright (c) 2010 Henrik Rydberg <rydberg@euromail.se>
1f01a1fe HR	6	* Copyright (c) 2010 Canonical, Ltd.
b6353f4f SC	7	*
	8	*/
	9
	10	/*
	11	* This program is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the Free
	13	* Software Foundation; either version 2 of the License, or (at your option)
	14	* any later version.
	15	*/
	16
	17	#include <linux/device.h>
	18	#include <linux/hid.h>
	19	#include <linux/module.h>
5a0e3ad6	20	#include <linux/slab.h>
b6353f4f SC	21	#include <linux/usb.h>
b6353f4f SC	22
b6353f4f SC	23	MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
	24	MODULE_DESCRIPTION("3M PCT multitouch panels");
	25	MODULE_LICENSE("GPL");
	26
	27	#include "hid-ids.h"
	28
41035901	29	#define MAX_SLOTS 60
1f01a1fe HR	30	#define MAX_TRKID USHRT_MAX
	31	#define MAX_EVENTS 360
	32
	33	/* estimated signal-to-noise ratios */
	34	#define SN_MOVE 2048
	35	#define SN_WIDTH 128
41035901	36
b6353f4f	37	struct mmm_finger {
6dec143a	38	__s32 x, y, w, h;
1f01a1fe	39	__u16 id;
1f01a1fe	40	bool prev_touch;
b6353f4f SC	41	bool touch, valid;
	42	};
	43
	44	struct mmm_data {
41035901	45	struct mmm_finger f[MAX_SLOTS];
1f01a1fe	46	__u16 id;
1d958c83	47	__u8 curid;
41035901	48	__u8 nexp, nreal;
b6353f4f SC	49	bool touch, valid;
	50	};
	51
	52	static int mmm_input_mapping(struct hid_device hdev, struct hid_input hi,
	53	struct hid_field field, struct hid_usage usage,
	54	unsigned long *bit, int max)
	55	{
1f01a1fe HR	56	int f1 = field->logical_minimum;
	57	int f2 = field->logical_maximum;
	58	int df = f2 - f1;
	59
b6353f4f SC	60	switch (usage->hid & HID_USAGE_PAGE) {
	61
	62	case HID_UP_BUTTON:
	63	return -1;
	64
	65	case HID_UP_GENDESK:
	66	switch (usage->hid) {
	67	case HID_GD_X:
	68	hid_map_usage(hi, usage, bit, max,
	69	EV_ABS, ABS_MT_POSITION_X);
1f01a1fe HR	70	input_set_abs_params(hi->input, ABS_MT_POSITION_X,
1f01a1fe HR	71	f1, f2, df / SN_MOVE, 0);
b6353f4f SC	72	/* touchscreen emulation */
b6353f4f SC	73	input_set_abs_params(hi->input, ABS_X,
1f01a1fe	74	f1, f2, df / SN_MOVE, 0);
b6353f4f SC	75	return 1;
	76	case HID_GD_Y:
	77	hid_map_usage(hi, usage, bit, max,
	78	EV_ABS, ABS_MT_POSITION_Y);
1f01a1fe HR	79	input_set_abs_params(hi->input, ABS_MT_POSITION_Y,
1f01a1fe HR	80	f1, f2, df / SN_MOVE, 0);
b6353f4f SC	81	/* touchscreen emulation */
b6353f4f SC	82	input_set_abs_params(hi->input, ABS_Y,
1f01a1fe	83	f1, f2, df / SN_MOVE, 0);
b6353f4f SC	84	return 1;
	85	}
	86	return 0;
	87
	88	case HID_UP_DIGITIZER:
	89	switch (usage->hid) {
	90	/* we do not want to map these: no input-oriented meaning */
	91	case 0x14:
	92	case 0x23:
	93	case HID_DG_INPUTMODE:
	94	case HID_DG_DEVICEINDEX:
	95	case HID_DG_CONTACTCOUNT:
	96	case HID_DG_CONTACTMAX:
	97	case HID_DG_INRANGE:
	98	case HID_DG_CONFIDENCE:
	99	return -1;
	100	case HID_DG_TIPSWITCH:
	101	/* touchscreen emulation */
	102	hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
1f01a1fe	103	input_set_capability(hi->input, EV_KEY, BTN_TOUCH);
b6353f4f	104	return 1;
6dec143a SC	105	case HID_DG_WIDTH:
	106	hid_map_usage(hi, usage, bit, max,
	107	EV_ABS, ABS_MT_TOUCH_MAJOR);
1f01a1fe HR	108	input_set_abs_params(hi->input, ABS_MT_TOUCH_MAJOR,
1f01a1fe HR	109	f1, f2, df / SN_WIDTH, 0);
6dec143a SC	110	return 1;
	111	case HID_DG_HEIGHT:
	112	hid_map_usage(hi, usage, bit, max,
	113	EV_ABS, ABS_MT_TOUCH_MINOR);
1f01a1fe HR	114	input_set_abs_params(hi->input, ABS_MT_TOUCH_MINOR,
1f01a1fe HR	115	f1, f2, df / SN_WIDTH, 0);
6dec143a	116	input_set_abs_params(hi->input, ABS_MT_ORIENTATION,
46c4ba01	117	0, 1, 0, 0);
6dec143a	118	return 1;
b6353f4f	119	case HID_DG_CONTACTID:
41035901	120	field->logical_maximum = MAX_TRKID;
b6353f4f SC	121	hid_map_usage(hi, usage, bit, max,
b6353f4f SC	122	EV_ABS, ABS_MT_TRACKING_ID);
1f01a1fe HR	123	input_set_abs_params(hi->input, ABS_MT_TRACKING_ID,
	124	0, MAX_TRKID, 0, 0);
	125	if (!hi->input->mt)
	126	input_mt_create_slots(hi->input, MAX_SLOTS);
	127	input_set_events_per_packet(hi->input, MAX_EVENTS);
b6353f4f SC	128	return 1;
	129	}
	130	/* let hid-input decide for the others */
	131	return 0;
	132
	133	case 0xff000000:
	134	/* we do not want to map these: no input-oriented meaning */
	135	return -1;
	136	}
	137
	138	return 0;
	139	}
	140
	141	static int mmm_input_mapped(struct hid_device hdev, struct hid_input hi,
	142	struct hid_field field, struct hid_usage usage,
	143	unsigned long *bit, int max)
	144	{
1f01a1fe	145	/* tell hid-input to skip setup of these event types */
b6353f4f	146	if (usage->type == EV_KEY \|\| usage->type == EV_ABS)
1f01a1fe HR	147	set_bit(usage->type, hi->input->evbit);
1f01a1fe HR	148	return -1;
b6353f4f SC	149	}
	150
	151	/*
	152	* this function is called when a whole packet has been received and processed,
	153	* so that it can decide what to send to the input layer.
	154	*/
	155	static void mmm_filter_event(struct mmm_data md, struct input_dev input)
	156	{
	157	struct mmm_finger *oldest = 0;
b6353f4f	158	int i;
41035901	159	for (i = 0; i < MAX_SLOTS; ++i) {
b6353f4f SC	160	struct mmm_finger *f = &md->f[i];
	161	if (!f->valid) {
	162	/* this finger is just placeholder data, ignore */
1f01a1fe HR	163	continue;
	164	}
	165	input_mt_slot(input, i);
	166	if (f->touch) {
b6353f4f	167	/* this finger is on the screen */
6dec143a	168	int wide = (f->w > f->h);
48216fbd HR	169	/* divided by two to match visual scale of touch */
	170	int major = max(f->w, f->h) >> 1;
	171	int minor = min(f->w, f->h) >> 1;
	172
1f01a1fe HR	173	if (!f->prev_touch)
	174	f->id = md->id++;
	175	input_event(input, EV_ABS, ABS_MT_TRACKING_ID, f->id);
b6353f4f SC	176	input_event(input, EV_ABS, ABS_MT_POSITION_X, f->x);
b6353f4f SC	177	input_event(input, EV_ABS, ABS_MT_POSITION_Y, f->y);
6dec143a	178	input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);
48216fbd HR	179	input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major);
48216fbd HR	180	input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor);
1d958c83 HR	181	/* touchscreen emulation: pick the oldest contact */
1d958c83 HR	182	if (!oldest \|\| ((f->id - oldest->id) & (SHRT_MAX + 1)))
b6353f4f SC	183	oldest = f;
	184	} else {
	185	/* this finger took off the screen */
1f01a1fe	186	input_event(input, EV_ABS, ABS_MT_TRACKING_ID, -1);
b6353f4f	187	}
1f01a1fe	188	f->prev_touch = f->touch;
b6353f4f SC	189	f->valid = 0;
	190	}
	191
	192	/* touchscreen emulation */
	193	if (oldest) {
1d958c83	194	input_event(input, EV_KEY, BTN_TOUCH, 1);
b6353f4f SC	195	input_event(input, EV_ABS, ABS_X, oldest->x);
b6353f4f SC	196	input_event(input, EV_ABS, ABS_Y, oldest->y);
1d958c83	197	} else {
b6353f4f SC	198	input_event(input, EV_KEY, BTN_TOUCH, 0);
b6353f4f SC	199	}
41035901	200	input_sync(input);
b6353f4f SC	201	}
	202
	203	/*
	204	* this function is called upon all reports
	205	* so that we can accumulate contact point information,
	206	* and call input_mt_sync after each point.
	207	*/
	208	static int mmm_event(struct hid_device hid, struct hid_field field,
	209	struct hid_usage *usage, __s32 value)
	210	{
	211	struct mmm_data *md = hid_get_drvdata(hid);
	212	/*
	213	* strangely, this function can be called before
	214	* field->hidinput is initialized!
	215	*/
	216	if (hid->claimed & HID_CLAIMED_INPUT) {
	217	struct input_dev *input = field->hidinput->input;
	218	switch (usage->hid) {
	219	case HID_DG_TIPSWITCH:
	220	md->touch = value;
	221	break;
	222	case HID_DG_CONFIDENCE:
	223	md->valid = value;
	224	break;
6dec143a SC	225	case HID_DG_WIDTH:
	226	if (md->valid)
	227	md->f[md->curid].w = value;
	228	break;
	229	case HID_DG_HEIGHT:
	230	if (md->valid)
	231	md->f[md->curid].h = value;
	232	break;
b6353f4f	233	case HID_DG_CONTACTID:
41035901	234	value = clamp_val(value, 0, MAX_SLOTS - 1);
b6353f4f SC	235	if (md->valid) {
	236	md->curid = value;
	237	md->f[value].touch = md->touch;
	238	md->f[value].valid = 1;
41035901	239	md->nreal++;
b6353f4f SC	240	}
	241	break;
	242	case HID_GD_X:
	243	if (md->valid)
	244	md->f[md->curid].x = value;
	245	break;
	246	case HID_GD_Y:
	247	if (md->valid)
	248	md->f[md->curid].y = value;
	249	break;
	250	case HID_DG_CONTACTCOUNT:
41035901 HR	251	if (value)
	252	md->nexp = value;
	253	if (md->nreal >= md->nexp) {
	254	mmm_filter_event(md, input);
	255	md->nreal = 0;
	256	}
b6353f4f SC	257	break;
	258	}
	259	}
	260
	261	/* we have handled the hidinput part, now remains hiddev */
	262	if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
	263	hid->hiddev_hid_event(hid, field, usage, value);
	264
	265	return 1;
	266	}
	267
	268	static int mmm_probe(struct hid_device hdev, const struct hid_device_id id)
	269	{
	270	int ret;
	271	struct mmm_data *md;
	272
41035901 HR	273	hdev->quirks \|= HID_QUIRK_NO_INPUT_SYNC;
41035901 HR	274
b6353f4f SC	275	md = kzalloc(sizeof(struct mmm_data), GFP_KERNEL);
	276	if (!md) {
	277	dev_err(&hdev->dev, "cannot allocate 3M data\n");
	278	return -ENOMEM;
	279	}
	280	hid_set_drvdata(hdev, md);
	281
	282	ret = hid_parse(hdev);
	283	if (!ret)
	284	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	285
	286	if (ret)
	287	kfree(md);
	288	return ret;
	289	}
	290
	291	static void mmm_remove(struct hid_device *hdev)
	292	{
	293	hid_hw_stop(hdev);
	294	kfree(hid_get_drvdata(hdev));
	295	hid_set_drvdata(hdev, NULL);
	296	}
	297
	298	static const struct hid_device_id mmm_devices[] = {
	299	{ HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M1968) },
6dec143a	300	{ HID_USB_DEVICE(USB_VENDOR_ID_3M, USB_DEVICE_ID_3M2256) },
b6353f4f SC	301	{ }
	302	};
	303	MODULE_DEVICE_TABLE(hid, mmm_devices);
	304
	305	static const struct hid_usage_id mmm_grabbed_usages[] = {
	306	{ HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
	307	{ HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
	308	};
	309
	310	static struct hid_driver mmm_driver = {
	311	.name = "3m-pct",
	312	.id_table = mmm_devices,
	313	.probe = mmm_probe,
	314	.remove = mmm_remove,
	315	.input_mapping = mmm_input_mapping,
	316	.input_mapped = mmm_input_mapped,
	317	.usage_table = mmm_grabbed_usages,
	318	.event = mmm_event,
	319	};
	320
	321	static int __init mmm_init(void)
	322	{
	323	return hid_register_driver(&mmm_driver);
	324	}
	325
	326	static void __exit mmm_exit(void)
	327	{
	328	hid_unregister_driver(&mmm_driver);
	329	}
	330
	331	module_init(mmm_init);
	332	module_exit(mmm_exit);
b6353f4f	333