[qemu.git] / hw / usb-wacom.c

/*
 * Wacom PenPartner USB tablet emulation.
 *
 * Copyright (c) 2006 Openedhand Ltd.
 * Author: Andrzej Zaborowski <[email protected]>
 *
 * Based on hw/usb-hid.c:
 * Copyright (c) 2005 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "hw.h"
#include "console.h"
#include "usb.h"
#include "usb-desc.h"

/* Interface requests */
#define WACOM_GET_REPORT	0x2101
#define WACOM_SET_REPORT	0x2109

/* HID interface requests */
#define HID_GET_REPORT		0xa101
#define HID_GET_IDLE		0xa102
#define HID_GET_PROTOCOL	0xa103
#define HID_SET_IDLE		0x210a
#define HID_SET_PROTOCOL	0x210b

typedef struct USBWacomState {
    USBDevice dev;
    QEMUPutMouseEntry *eh_entry;
    int dx, dy, dz, buttons_state;
    int x, y;
    int mouse_grabbed;
    enum {
        WACOM_MODE_HID = 1,
        WACOM_MODE_WACOM = 2,
    } mode;
    uint8_t idle;
    int changed;
} USBWacomState;

enum {
    STR_MANUFACTURER = 1,
    STR_PRODUCT,
    STR_SERIALNUMBER,
};

static const USBDescStrings desc_strings = {
    [STR_MANUFACTURER]     = "QEMU " QEMU_VERSION,
    [STR_PRODUCT]          = "Wacom PenPartner",
    [STR_SERIALNUMBER]     = "1",
};

static const USBDescIface desc_iface_wacom = {
    .bInterfaceNumber              = 0,
    .bNumEndpoints                 = 1,
    .bInterfaceClass               = USB_CLASS_HID,
    .bInterfaceSubClass            = 0x01, /* boot */
    .bInterfaceProtocol            = 0x02,
    .ndesc                         = 1,
    .descs = (USBDescOther[]) {
        {
            /* HID descriptor */
            .data = (uint8_t[]) {
                0x09,          /*  u8  bLength */
                0x21,          /*  u8  bDescriptorType */
                0x01, 0x10,    /*  u16 HID_class */
                0x00,          /*  u8  country_code */
                0x01,          /*  u8  num_descriptors */
                0x22,          /*  u8  type: Report */
                0x6e, 0,       /*  u16 len */
            },
        },
    },
    .eps = (USBDescEndpoint[]) {
        {
            .bEndpointAddress      = USB_DIR_IN | 0x01,
            .bmAttributes          = USB_ENDPOINT_XFER_INT,
            .wMaxPacketSize        = 8,
            .bInterval             = 0x0a,
        },
    },
};

static const USBDescDevice desc_device_wacom = {
    .bcdUSB                        = 0x0110,
    .bMaxPacketSize0               = 8,
    .bNumConfigurations            = 1,
    .confs = (USBDescConfig[]) {
        {
            .bNumInterfaces        = 1,
            .bConfigurationValue   = 1,
            .bmAttributes          = 0x80,
            .bMaxPower             = 40,
            .ifs = &desc_iface_wacom,
        },
    },
};

static const USBDesc desc_wacom = {
    .id = {
        .idVendor          = 0x056a,
        .idProduct         = 0x0000,
        .bcdDevice         = 0x4210,
        .iManufacturer     = STR_MANUFACTURER,
        .iProduct          = STR_PRODUCT,
        .iSerialNumber     = STR_SERIALNUMBER,
    },
    .full = &desc_device_wacom,
    .str  = desc_strings,
};

static void usb_mouse_event(void *opaque,
                            int dx1, int dy1, int dz1, int buttons_state)
{
    USBWacomState *s = opaque;

    s->dx += dx1;
    s->dy += dy1;
    s->dz += dz1;
    s->buttons_state = buttons_state;
    s->changed = 1;
}

static void usb_wacom_event(void *opaque,
                            int x, int y, int dz, int buttons_state)
{
    USBWacomState *s = opaque;

    /* scale to Penpartner resolution */
    s->x = (x * 5040 / 0x7FFF);
    s->y = (y * 3780 / 0x7FFF);
    s->dz += dz;
    s->buttons_state = buttons_state;
    s->changed = 1;
}

static inline int int_clamp(int val, int vmin, int vmax)
{
    if (val < vmin)
        return vmin;
    else if (val > vmax)
        return vmax;
    else
        return val;
}

static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len)
{
    int dx, dy, dz, b, l;

    if (!s->mouse_grabbed) {
        s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
                        "QEMU PenPartner tablet");
        qemu_activate_mouse_event_handler(s->eh_entry);
        s->mouse_grabbed = 1;
    }

    dx = int_clamp(s->dx, -128, 127);
    dy = int_clamp(s->dy, -128, 127);
    dz = int_clamp(s->dz, -128, 127);

    s->dx -= dx;
    s->dy -= dy;
    s->dz -= dz;

    b = 0;
    if (s->buttons_state & MOUSE_EVENT_LBUTTON)
        b |= 0x01;
    if (s->buttons_state & MOUSE_EVENT_RBUTTON)
        b |= 0x02;
    if (s->buttons_state & MOUSE_EVENT_MBUTTON)
        b |= 0x04;

    buf[0] = b;
    buf[1] = dx;
    buf[2] = dy;
    l = 3;
    if (len >= 4) {
        buf[3] = dz;
        l = 4;
    }
    return l;
}

static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len)
{
    int b;

    if (!s->mouse_grabbed) {
        s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
                        "QEMU PenPartner tablet");
        qemu_activate_mouse_event_handler(s->eh_entry);
        s->mouse_grabbed = 1;
    }

    b = 0;
    if (s->buttons_state & MOUSE_EVENT_LBUTTON)
        b |= 0x01;
    if (s->buttons_state & MOUSE_EVENT_RBUTTON)
        b |= 0x40;
    if (s->buttons_state & MOUSE_EVENT_MBUTTON)
        b |= 0x20; /* eraser */

    if (len < 7)
        return 0;

    buf[0] = s->mode;
    buf[5] = 0x00 | (b & 0xf0);
    buf[1] = s->x & 0xff;
    buf[2] = s->x >> 8;
    buf[3] = s->y & 0xff;
    buf[4] = s->y >> 8;
    if (b & 0x3f) {
        buf[6] = 0;
    } else {
        buf[6] = (unsigned char) -127;
    }

    return 7;
}

static void usb_wacom_handle_reset(USBDevice *dev)
{
    USBWacomState *s = (USBWacomState *) dev;

    s->dx = 0;
    s->dy = 0;
    s->dz = 0;
    s->x = 0;
    s->y = 0;
    s->buttons_state = 0;
    s->mode = WACOM_MODE_HID;
}

static int usb_wacom_handle_control(USBDevice *dev, int request, int value,
                                    int index, int length, uint8_t *data)
{
    USBWacomState *s = (USBWacomState *) dev;
    int ret;

    ret = usb_desc_handle_control(dev, request, value, index, length, data);
    if (ret >= 0) {
        return ret;
    }

    ret = 0;
    switch (request) {
    case DeviceRequest | USB_REQ_GET_INTERFACE:
        data[0] = 0;
        ret = 1;
        break;
    case DeviceOutRequest | USB_REQ_SET_INTERFACE:
        ret = 0;
        break;
    case WACOM_SET_REPORT:
        if (s->mouse_grabbed) {
            qemu_remove_mouse_event_handler(s->eh_entry);
            s->mouse_grabbed = 0;
        }
        s->mode = data[0];
        ret = 0;
        break;
    case WACOM_GET_REPORT:
        data[0] = 0;
        data[1] = s->mode;
        ret = 2;
        break;
    /* USB HID requests */
    case HID_GET_REPORT:
        if (s->mode == WACOM_MODE_HID)
            ret = usb_mouse_poll(s, data, length);
        else if (s->mode == WACOM_MODE_WACOM)
            ret = usb_wacom_poll(s, data, length);
        break;
    case HID_GET_IDLE:
        ret = 1;
        data[0] = s->idle;
        break;
    case HID_SET_IDLE:
        s->idle = (uint8_t) (value >> 8);
        ret = 0;
        break;
    default:
        ret = USB_RET_STALL;
        break;
    }
    return ret;
}

static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
{
    USBWacomState *s = (USBWacomState *) dev;
    int ret = 0;

    switch (p->pid) {
    case USB_TOKEN_IN:
        if (p->devep == 1) {
            if (!(s->changed || s->idle))
                return USB_RET_NAK;
            s->changed = 0;
            if (s->mode == WACOM_MODE_HID)
                ret = usb_mouse_poll(s, p->data, p->len);
            else if (s->mode == WACOM_MODE_WACOM)
                ret = usb_wacom_poll(s, p->data, p->len);
            break;
        }
        /* Fall through.  */
    case USB_TOKEN_OUT:
    default:
        ret = USB_RET_STALL;
        break;
    }
    return ret;
}

static void usb_wacom_handle_destroy(USBDevice *dev)
{
    USBWacomState *s = (USBWacomState *) dev;

    if (s->mouse_grabbed) {
        qemu_remove_mouse_event_handler(s->eh_entry);
        s->mouse_grabbed = 0;
    }
}

static int usb_wacom_initfn(USBDevice *dev)
{
    USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
    usb_desc_init(dev);
    s->changed = 1;
    return 0;
}

static struct USBDeviceInfo wacom_info = {
    .product_desc   = "QEMU PenPartner Tablet",
    .qdev.name      = "usb-wacom-tablet",
    .qdev.desc      = "QEMU PenPartner Tablet",
    .usbdevice_name = "wacom-tablet",
    .usb_desc       = &desc_wacom,
    .qdev.size      = sizeof(USBWacomState),
    .init           = usb_wacom_initfn,
    .handle_packet  = usb_generic_handle_packet,
    .handle_reset   = usb_wacom_handle_reset,
    .handle_control = usb_wacom_handle_control,
    .handle_data    = usb_wacom_handle_data,
    .handle_destroy = usb_wacom_handle_destroy,
};

static void usb_wacom_register_devices(void)
{
    usb_qdev_register(&wacom_info);
}
device_init(usb_wacom_register_devices)
Commit	Line	Data
f6d2a316 AZ	1	/*
	2	* Wacom PenPartner USB tablet emulation.
	3	*
	4	* Copyright (c) 2006 Openedhand Ltd.
	5	* Author: Andrzej Zaborowski <[email protected]>
	6	*
	7	* Based on hw/usb-hid.c:
	8	* Copyright (c) 2005 Fabrice Bellard
	9	*
	10	* Permission is hereby granted, free of charge, to any person obtaining a copy
	11	* of this software and associated documentation files (the "Software"), to deal
	12	* in the Software without restriction, including without limitation the rights
	13	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	14	* copies of the Software, and to permit persons to whom the Software is
	15	* furnished to do so, subject to the following conditions:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	21	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	23	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	24	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	25	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	26	* THE SOFTWARE.
	27	*/
87ecb68b PB	28	#include "hw.h"
	29	#include "console.h"
	30	#include "usb.h"
037a5203	31	#include "usb-desc.h"
f6d2a316 AZ	32
	33	/* Interface requests */
	34	#define WACOM_GET_REPORT 0x2101
	35	#define WACOM_SET_REPORT 0x2109
	36
	37	/* HID interface requests */
	38	#define HID_GET_REPORT 0xa101
	39	#define HID_GET_IDLE 0xa102
	40	#define HID_GET_PROTOCOL 0xa103
	41	#define HID_SET_IDLE 0x210a
	42	#define HID_SET_PROTOCOL 0x210b
	43
	44	typedef struct USBWacomState {
	45	USBDevice dev;
	46	QEMUPutMouseEntry *eh_entry;
	47	int dx, dy, dz, buttons_state;
	48	int x, y;
	49	int mouse_grabbed;
	50	enum {
	51	WACOM_MODE_HID = 1,
	52	WACOM_MODE_WACOM = 2,
	53	} mode;
2ca2078e FR	54	uint8_t idle;
2ca2078e FR	55	int changed;
f6d2a316 AZ	56	} USBWacomState;
f6d2a316 AZ	57
037a5203 GH	58	enum {
	59	STR_MANUFACTURER = 1,
	60	STR_PRODUCT,
	61	STR_SERIALNUMBER,
	62	};
f6d2a316	63
037a5203 GH	64	static const USBDescStrings desc_strings = {
	65	[STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
	66	[STR_PRODUCT] = "Wacom PenPartner",
	67	[STR_SERIALNUMBER] = "1",
	68	};
f6d2a316	69
037a5203 GH	70	static const USBDescIface desc_iface_wacom = {
	71	.bInterfaceNumber = 0,
	72	.bNumEndpoints = 1,
	73	.bInterfaceClass = USB_CLASS_HID,
	74	.bInterfaceSubClass = 0x01, /* boot */
	75	.bInterfaceProtocol = 0x02,
	76	.ndesc = 1,
	77	.descs = (USBDescOther[]) {
	78	{
	79	/* HID descriptor */
	80	.data = (uint8_t[]) {
	81	0x09, /* u8 bLength */
	82	0x21, /* u8 bDescriptorType */
	83	0x01, 0x10, /* u16 HID_class */
	84	0x00, /* u8 country_code */
	85	0x01, /* u8 num_descriptors */
	86	0x22, /* u8 type: Report */
	87	0x6e, 0, /* u16 len */
	88	},
	89	},
	90	},
	91	.eps = (USBDescEndpoint[]) {
	92	{
	93	.bEndpointAddress = USB_DIR_IN \| 0x01,
	94	.bmAttributes = USB_ENDPOINT_XFER_INT,
	95	.wMaxPacketSize = 8,
	96	.bInterval = 0x0a,
	97	},
	98	},
	99	};
f6d2a316	100
037a5203 GH	101	static const USBDescDevice desc_device_wacom = {
	102	.bcdUSB = 0x0110,
	103	.bMaxPacketSize0 = 8,
	104	.bNumConfigurations = 1,
	105	.confs = (USBDescConfig[]) {
	106	{
	107	.bNumInterfaces = 1,
	108	.bConfigurationValue = 1,
	109	.bmAttributes = 0x80,
	110	.bMaxPower = 40,
	111	.ifs = &desc_iface_wacom,
	112	},
	113	},
f6d2a316 AZ	114	};
f6d2a316 AZ	115
037a5203 GH	116	static const USBDesc desc_wacom = {
	117	.id = {
	118	.idVendor = 0x056a,
	119	.idProduct = 0x0000,
	120	.bcdDevice = 0x4210,
	121	.iManufacturer = STR_MANUFACTURER,
	122	.iProduct = STR_PRODUCT,
	123	.iSerialNumber = STR_SERIALNUMBER,
	124	},
	125	.full = &desc_device_wacom,
	126	.str = desc_strings,
f6d2a316 AZ	127	};
	128
	129	static void usb_mouse_event(void *opaque,
	130	int dx1, int dy1, int dz1, int buttons_state)
	131	{
	132	USBWacomState *s = opaque;
	133
	134	s->dx += dx1;
	135	s->dy += dy1;
	136	s->dz += dz1;
	137	s->buttons_state = buttons_state;
2ca2078e	138	s->changed = 1;
f6d2a316 AZ	139	}
	140
	141	static void usb_wacom_event(void *opaque,
	142	int x, int y, int dz, int buttons_state)
	143	{
	144	USBWacomState *s = opaque;
	145
2ca2078e FR	146	/* scale to Penpartner resolution */
	147	s->x = (x * 5040 / 0x7FFF);
	148	s->y = (y * 3780 / 0x7FFF);
f6d2a316 AZ	149	s->dz += dz;
f6d2a316 AZ	150	s->buttons_state = buttons_state;
2ca2078e	151	s->changed = 1;
f6d2a316 AZ	152	}
	153
	154	static inline int int_clamp(int val, int vmin, int vmax)
	155	{
	156	if (val < vmin)
	157	return vmin;
	158	else if (val > vmax)
	159	return vmax;
	160	else
	161	return val;
	162	}
	163
	164	static int usb_mouse_poll(USBWacomState s, uint8_t buf, int len)
	165	{
	166	int dx, dy, dz, b, l;
	167
	168	if (!s->mouse_grabbed) {
	169	s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
	170	"QEMU PenPartner tablet");
b2d4d832	171	qemu_activate_mouse_event_handler(s->eh_entry);
f6d2a316 AZ	172	s->mouse_grabbed = 1;
	173	}
	174
	175	dx = int_clamp(s->dx, -128, 127);
	176	dy = int_clamp(s->dy, -128, 127);
	177	dz = int_clamp(s->dz, -128, 127);
	178
	179	s->dx -= dx;
	180	s->dy -= dy;
	181	s->dz -= dz;
	182
	183	b = 0;
	184	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
	185	b \|= 0x01;
	186	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
	187	b \|= 0x02;
	188	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
	189	b \|= 0x04;
	190
	191	buf[0] = b;
	192	buf[1] = dx;
	193	buf[2] = dy;
	194	l = 3;
	195	if (len >= 4) {
	196	buf[3] = dz;
	197	l = 4;
	198	}
	199	return l;
	200	}
	201
	202	static int usb_wacom_poll(USBWacomState s, uint8_t buf, int len)
	203	{
	204	int b;
	205
	206	if (!s->mouse_grabbed) {
	207	s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
	208	"QEMU PenPartner tablet");
b2d4d832	209	qemu_activate_mouse_event_handler(s->eh_entry);
f6d2a316 AZ	210	s->mouse_grabbed = 1;
	211	}
	212
	213	b = 0;
	214	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
	215	b \|= 0x01;
	216	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
2ca2078e	217	b \|= 0x40;
f6d2a316	218	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
2ca2078e	219	b \|= 0x20; /* eraser */
f6d2a316 AZ	220
	221	if (len < 7)
	222	return 0;
	223
	224	buf[0] = s->mode;
2ca2078e FR	225	buf[5] = 0x00 \| (b & 0xf0);
	226	buf[1] = s->x & 0xff;
	227	buf[2] = s->x >> 8;
	228	buf[3] = s->y & 0xff;
	229	buf[4] = s->y >> 8;
	230	if (b & 0x3f) {
f6d2a316 AZ	231	buf[6] = 0;
f6d2a316 AZ	232	} else {
f6d2a316 AZ	233	buf[6] = (unsigned char) -127;
	234	}
	235
	236	return 7;
	237	}
	238
	239	static void usb_wacom_handle_reset(USBDevice *dev)
	240	{
	241	USBWacomState s = (USBWacomState ) dev;
	242
	243	s->dx = 0;
	244	s->dy = 0;
	245	s->dz = 0;
	246	s->x = 0;
	247	s->y = 0;
	248	s->buttons_state = 0;
	249	s->mode = WACOM_MODE_HID;
	250	}
	251
	252	static int usb_wacom_handle_control(USBDevice *dev, int request, int value,
	253	int index, int length, uint8_t *data)
	254	{
	255	USBWacomState s = (USBWacomState ) dev;
037a5203 GH	256	int ret;
	257
	258	ret = usb_desc_handle_control(dev, request, value, index, length, data);
	259	if (ret >= 0) {
	260	return ret;
	261	}
f6d2a316	262
037a5203	263	ret = 0;
f6d2a316	264	switch (request) {
f6d2a316 AZ	265	case DeviceRequest \| USB_REQ_GET_INTERFACE:
	266	data[0] = 0;
	267	ret = 1;
	268	break;
	269	case DeviceOutRequest \| USB_REQ_SET_INTERFACE:
	270	ret = 0;
	271	break;
	272	case WACOM_SET_REPORT:
b2d4d832 GH	273	if (s->mouse_grabbed) {
	274	qemu_remove_mouse_event_handler(s->eh_entry);
	275	s->mouse_grabbed = 0;
	276	}
f6d2a316 AZ	277	s->mode = data[0];
	278	ret = 0;
	279	break;
	280	case WACOM_GET_REPORT:
	281	data[0] = 0;
	282	data[1] = s->mode;
	283	ret = 2;
	284	break;
	285	/* USB HID requests */
	286	case HID_GET_REPORT:
	287	if (s->mode == WACOM_MODE_HID)
	288	ret = usb_mouse_poll(s, data, length);
	289	else if (s->mode == WACOM_MODE_WACOM)
	290	ret = usb_wacom_poll(s, data, length);
	291	break;
2ca2078e FR	292	case HID_GET_IDLE:
	293	ret = 1;
	294	data[0] = s->idle;
	295	break;
f6d2a316	296	case HID_SET_IDLE:
2ca2078e	297	s->idle = (uint8_t) (value >> 8);
f6d2a316 AZ	298	ret = 0;
	299	break;
	300	default:
f6d2a316 AZ	301	ret = USB_RET_STALL;
	302	break;
	303	}
	304	return ret;
	305	}
	306
	307	static int usb_wacom_handle_data(USBDevice dev, USBPacket p)
	308	{
	309	USBWacomState s = (USBWacomState ) dev;
	310	int ret = 0;
	311
	312	switch (p->pid) {
	313	case USB_TOKEN_IN:
	314	if (p->devep == 1) {
2ca2078e FR	315	if (!(s->changed \|\| s->idle))
	316	return USB_RET_NAK;
	317	s->changed = 0;
f6d2a316 AZ	318	if (s->mode == WACOM_MODE_HID)
	319	ret = usb_mouse_poll(s, p->data, p->len);
	320	else if (s->mode == WACOM_MODE_WACOM)
	321	ret = usb_wacom_poll(s, p->data, p->len);
	322	break;
	323	}
	324	/* Fall through. */
	325	case USB_TOKEN_OUT:
	326	default:
	327	ret = USB_RET_STALL;
	328	break;
	329	}
	330	return ret;
	331	}
	332
	333	static void usb_wacom_handle_destroy(USBDevice *dev)
	334	{
	335	USBWacomState s = (USBWacomState ) dev;
	336
b2d4d832 GH	337	if (s->mouse_grabbed) {
	338	qemu_remove_mouse_event_handler(s->eh_entry);
	339	s->mouse_grabbed = 0;
	340	}
f6d2a316 AZ	341	}
f6d2a316 AZ	342
806b6024	343	static int usb_wacom_initfn(USBDevice *dev)
f6d2a316	344	{
806b6024	345	USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
a980a065	346	usb_desc_init(dev);
2ca2078e	347	s->changed = 1;
806b6024 GH	348	return 0;
806b6024 GH	349	}
f6d2a316	350
806b6024	351	static struct USBDeviceInfo wacom_info = {
06384698	352	.product_desc = "QEMU PenPartner Tablet",
556cd098 MA	353	.qdev.name = "usb-wacom-tablet",
556cd098 MA	354	.qdev.desc = "QEMU PenPartner Tablet",
fa7c70c3	355	.usbdevice_name = "wacom-tablet",
037a5203	356	.usb_desc = &desc_wacom,
806b6024 GH	357	.qdev.size = sizeof(USBWacomState),
	358	.init = usb_wacom_initfn,
	359	.handle_packet = usb_generic_handle_packet,
	360	.handle_reset = usb_wacom_handle_reset,
	361	.handle_control = usb_wacom_handle_control,
	362	.handle_data = usb_wacom_handle_data,
	363	.handle_destroy = usb_wacom_handle_destroy,
	364	};
f6d2a316	365
806b6024 GH	366	static void usb_wacom_register_devices(void)
	367	{
	368	usb_qdev_register(&wacom_info);
f6d2a316	369	}
806b6024	370	device_init(usb_wacom_register_devices)