[qemu.git] / hw / usb / dev-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 "qemu/osdep.h"
#include "ui/console.h"
#include "hw/usb.h"
#include "migration/vmstate.h"
#include "qemu/module.h"
#include "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;
    USBEndpoint *intr;
    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;

#define TYPE_USB_WACOM "usb-wacom-tablet"
#define USB_WACOM(obj) OBJECT_CHECK(USBWacomState, (obj), TYPE_USB_WACOM)

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

static const USBDescStrings desc_strings = {
    [STR_MANUFACTURER]     = "QEMU",
    [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          = USB_CFG_ATT_ONE,
            .bMaxPower             = 40,
            .nif = 1,
            .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;
    usb_wakeup(s->intr, 0);
}

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;
    usb_wakeup(s->intr, 0);
}

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

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

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

static void usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
{
    USBWacomState *s = (USBWacomState *) dev;
    uint8_t buf[p->iov.size];
    int len = 0;

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

static void usb_wacom_unrealize(USBDevice *dev, Error **errp)
{
    USBWacomState *s = (USBWacomState *) dev;

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

static void usb_wacom_realize(USBDevice *dev, Error **errp)
{
    USBWacomState *s = USB_WACOM(dev);
    usb_desc_create_serial(dev);
    usb_desc_init(dev);
    s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
    s->changed = 1;
}

static const VMStateDescription vmstate_usb_wacom = {
    .name = "usb-wacom",
    .unmigratable = 1,
};

static void usb_wacom_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);

    uc->product_desc   = "QEMU PenPartner Tablet";
    uc->usb_desc       = &desc_wacom;
    uc->realize        = usb_wacom_realize;
    uc->handle_reset   = usb_wacom_handle_reset;
    uc->handle_control = usb_wacom_handle_control;
    uc->handle_data    = usb_wacom_handle_data;
    uc->unrealize      = usb_wacom_unrealize;
    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
    dc->desc = "QEMU PenPartner Tablet";
    dc->vmsd = &vmstate_usb_wacom;
}

static const TypeInfo wacom_info = {
    .name          = TYPE_USB_WACOM,
    .parent        = TYPE_USB_DEVICE,
    .instance_size = sizeof(USBWacomState),
    .class_init    = usb_wacom_class_init,
};

static void usb_wacom_register_types(void)
{
    type_register_static(&wacom_info);
    usb_legacy_register(TYPE_USB_WACOM, "wacom-tablet", NULL);
}

type_init(usb_wacom_register_types)
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	*/
0b8fa32f	28
e532b2e0	29	#include "qemu/osdep.h"
28ecbaee	30	#include "ui/console.h"
f1ae32a1	31	#include "hw/usb.h"
d6454270	32	#include "migration/vmstate.h"
0b8fa32f	33	#include "qemu/module.h"
463581a8	34	#include "desc.h"
f6d2a316 AZ	35
	36	/* Interface requests */
	37	#define WACOM_GET_REPORT 0x2101
	38	#define WACOM_SET_REPORT 0x2109
	39
	40	/* HID interface requests */
	41	#define HID_GET_REPORT 0xa101
	42	#define HID_GET_IDLE 0xa102
	43	#define HID_GET_PROTOCOL 0xa103
	44	#define HID_SET_IDLE 0x210a
	45	#define HID_SET_PROTOCOL 0x210b
	46
	47	typedef struct USBWacomState {
	48	USBDevice dev;
8beba930	49	USBEndpoint *intr;
f6d2a316 AZ	50	QEMUPutMouseEntry *eh_entry;
	51	int dx, dy, dz, buttons_state;
	52	int x, y;
	53	int mouse_grabbed;
	54	enum {
	55	WACOM_MODE_HID = 1,
	56	WACOM_MODE_WACOM = 2,
	57	} mode;
2ca2078e FR	58	uint8_t idle;
2ca2078e FR	59	int changed;
f6d2a316 AZ	60	} USBWacomState;
f6d2a316 AZ	61
924e567e GA	62	#define TYPE_USB_WACOM "usb-wacom-tablet"
	63	#define USB_WACOM(obj) OBJECT_CHECK(USBWacomState, (obj), TYPE_USB_WACOM)
	64
037a5203 GH	65	enum {
	66	STR_MANUFACTURER = 1,
	67	STR_PRODUCT,
	68	STR_SERIALNUMBER,
	69	};
f6d2a316	70
037a5203	71	static const USBDescStrings desc_strings = {
93bfef4c	72	[STR_MANUFACTURER] = "QEMU",
037a5203 GH	73	[STR_PRODUCT] = "Wacom PenPartner",
	74	[STR_SERIALNUMBER] = "1",
	75	};
f6d2a316	76
037a5203 GH	77	static const USBDescIface desc_iface_wacom = {
	78	.bInterfaceNumber = 0,
	79	.bNumEndpoints = 1,
	80	.bInterfaceClass = USB_CLASS_HID,
	81	.bInterfaceSubClass = 0x01, /* boot */
	82	.bInterfaceProtocol = 0x02,
	83	.ndesc = 1,
	84	.descs = (USBDescOther[]) {
	85	{
	86	/* HID descriptor */
	87	.data = (uint8_t[]) {
	88	0x09, /* u8 bLength */
	89	0x21, /* u8 bDescriptorType */
	90	0x01, 0x10, /* u16 HID_class */
	91	0x00, /* u8 country_code */
	92	0x01, /* u8 num_descriptors */
	93	0x22, /* u8 type: Report */
	94	0x6e, 0, /* u16 len */
	95	},
	96	},
	97	},
	98	.eps = (USBDescEndpoint[]) {
	99	{
	100	.bEndpointAddress = USB_DIR_IN \| 0x01,
	101	.bmAttributes = USB_ENDPOINT_XFER_INT,
	102	.wMaxPacketSize = 8,
	103	.bInterval = 0x0a,
	104	},
	105	},
	106	};
f6d2a316	107
037a5203 GH	108	static const USBDescDevice desc_device_wacom = {
	109	.bcdUSB = 0x0110,
	110	.bMaxPacketSize0 = 8,
	111	.bNumConfigurations = 1,
	112	.confs = (USBDescConfig[]) {
	113	{
	114	.bNumInterfaces = 1,
	115	.bConfigurationValue = 1,
bd93976a	116	.bmAttributes = USB_CFG_ATT_ONE,
037a5203	117	.bMaxPower = 40,
add75088	118	.nif = 1,
037a5203 GH	119	.ifs = &desc_iface_wacom,
	120	},
	121	},
f6d2a316 AZ	122	};
f6d2a316 AZ	123
037a5203 GH	124	static const USBDesc desc_wacom = {
	125	.id = {
	126	.idVendor = 0x056a,
	127	.idProduct = 0x0000,
	128	.bcdDevice = 0x4210,
	129	.iManufacturer = STR_MANUFACTURER,
	130	.iProduct = STR_PRODUCT,
	131	.iSerialNumber = STR_SERIALNUMBER,
	132	},
	133	.full = &desc_device_wacom,
	134	.str = desc_strings,
f6d2a316 AZ	135	};
	136
	137	static void usb_mouse_event(void *opaque,
	138	int dx1, int dy1, int dz1, int buttons_state)
	139	{
	140	USBWacomState *s = opaque;
	141
	142	s->dx += dx1;
	143	s->dy += dy1;
	144	s->dz += dz1;
	145	s->buttons_state = buttons_state;
2ca2078e	146	s->changed = 1;
8550a02d	147	usb_wakeup(s->intr, 0);
f6d2a316 AZ	148	}
	149
	150	static void usb_wacom_event(void *opaque,
	151	int x, int y, int dz, int buttons_state)
	152	{
	153	USBWacomState *s = opaque;
	154
2ca2078e FR	155	/* scale to Penpartner resolution */
	156	s->x = (x * 5040 / 0x7FFF);
	157	s->y = (y * 3780 / 0x7FFF);
f6d2a316 AZ	158	s->dz += dz;
f6d2a316 AZ	159	s->buttons_state = buttons_state;
2ca2078e	160	s->changed = 1;
8550a02d	161	usb_wakeup(s->intr, 0);
f6d2a316 AZ	162	}
	163
	164	static inline int int_clamp(int val, int vmin, int vmax)
	165	{
	166	if (val < vmin)
	167	return vmin;
	168	else if (val > vmax)
	169	return vmax;
	170	else
	171	return val;
	172	}
	173
	174	static int usb_mouse_poll(USBWacomState s, uint8_t buf, int len)
	175	{
	176	int dx, dy, dz, b, l;
	177
	178	if (!s->mouse_grabbed) {
	179	s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
	180	"QEMU PenPartner tablet");
b2d4d832	181	qemu_activate_mouse_event_handler(s->eh_entry);
f6d2a316 AZ	182	s->mouse_grabbed = 1;
	183	}
	184
	185	dx = int_clamp(s->dx, -128, 127);
	186	dy = int_clamp(s->dy, -128, 127);
	187	dz = int_clamp(s->dz, -128, 127);
	188
	189	s->dx -= dx;
	190	s->dy -= dy;
	191	s->dz -= dz;
	192
	193	b = 0;
	194	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
	195	b \|= 0x01;
	196	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
	197	b \|= 0x02;
	198	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
	199	b \|= 0x04;
	200
	201	buf[0] = b;
	202	buf[1] = dx;
	203	buf[2] = dy;
	204	l = 3;
	205	if (len >= 4) {
	206	buf[3] = dz;
	207	l = 4;
	208	}
	209	return l;
	210	}
	211
	212	static int usb_wacom_poll(USBWacomState s, uint8_t buf, int len)
	213	{
	214	int b;
	215
	216	if (!s->mouse_grabbed) {
	217	s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
	218	"QEMU PenPartner tablet");
b2d4d832	219	qemu_activate_mouse_event_handler(s->eh_entry);
f6d2a316 AZ	220	s->mouse_grabbed = 1;
	221	}
	222
	223	b = 0;
	224	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
	225	b \|= 0x01;
	226	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
2ca2078e	227	b \|= 0x40;
f6d2a316	228	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
2ca2078e	229	b \|= 0x20; /* eraser */
f6d2a316 AZ	230
	231	if (len < 7)
	232	return 0;
	233
	234	buf[0] = s->mode;
2ca2078e FR	235	buf[5] = 0x00 \| (b & 0xf0);
	236	buf[1] = s->x & 0xff;
	237	buf[2] = s->x >> 8;
	238	buf[3] = s->y & 0xff;
	239	buf[4] = s->y >> 8;
	240	if (b & 0x3f) {
f6d2a316 AZ	241	buf[6] = 0;
f6d2a316 AZ	242	} else {
f6d2a316 AZ	243	buf[6] = (unsigned char) -127;
	244	}
	245
	246	return 7;
	247	}
	248
	249	static void usb_wacom_handle_reset(USBDevice *dev)
	250	{
	251	USBWacomState s = (USBWacomState ) dev;
	252
	253	s->dx = 0;
	254	s->dy = 0;
	255	s->dz = 0;
	256	s->x = 0;
	257	s->y = 0;
	258	s->buttons_state = 0;
	259	s->mode = WACOM_MODE_HID;
	260	}
	261
9a77a0f5	262	static void usb_wacom_handle_control(USBDevice dev, USBPacket p,
007fd62f	263	int request, int value, int index, int length, uint8_t *data)
f6d2a316 AZ	264	{
f6d2a316 AZ	265	USBWacomState s = (USBWacomState ) dev;
037a5203 GH	266	int ret;
037a5203 GH	267
007fd62f	268	ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
037a5203	269	if (ret >= 0) {
9a77a0f5	270	return;
037a5203	271	}
f6d2a316 AZ	272
f6d2a316 AZ	273	switch (request) {
f6d2a316	274	case WACOM_SET_REPORT:
b2d4d832 GH	275	if (s->mouse_grabbed) {
	276	qemu_remove_mouse_event_handler(s->eh_entry);
	277	s->mouse_grabbed = 0;
	278	}
f6d2a316	279	s->mode = data[0];
f6d2a316 AZ	280	break;
	281	case WACOM_GET_REPORT:
	282	data[0] = 0;
	283	data[1] = s->mode;
9a77a0f5	284	p->actual_length = 2;
f6d2a316 AZ	285	break;
	286	/* USB HID requests */
	287	case HID_GET_REPORT:
	288	if (s->mode == WACOM_MODE_HID)
9a77a0f5	289	p->actual_length = usb_mouse_poll(s, data, length);
f6d2a316	290	else if (s->mode == WACOM_MODE_WACOM)
9a77a0f5	291	p->actual_length = usb_wacom_poll(s, data, length);
f6d2a316	292	break;
2ca2078e	293	case HID_GET_IDLE:
2ca2078e	294	data[0] = s->idle;
9a77a0f5	295	p->actual_length = 1;
2ca2078e	296	break;
f6d2a316	297	case HID_SET_IDLE:
2ca2078e	298	s->idle = (uint8_t) (value >> 8);
f6d2a316 AZ	299	break;
f6d2a316 AZ	300	default:
9a77a0f5	301	p->status = USB_RET_STALL;
f6d2a316 AZ	302	break;
f6d2a316 AZ	303	}
f6d2a316 AZ	304	}
f6d2a316 AZ	305
9a77a0f5	306	static void usb_wacom_handle_data(USBDevice dev, USBPacket p)
f6d2a316 AZ	307	{
f6d2a316 AZ	308	USBWacomState s = (USBWacomState ) dev;
4f4321c1	309	uint8_t buf[p->iov.size];
9a77a0f5	310	int len = 0;
f6d2a316 AZ	311
	312	switch (p->pid) {
	313	case USB_TOKEN_IN:
079d0b7f	314	if (p->ep->nr == 1) {
9a77a0f5 HG	315	if (!(s->changed \|\| s->idle)) {
	316	p->status = USB_RET_NAK;
	317	return;
	318	}
2ca2078e	319	s->changed = 0;
f6d2a316	320	if (s->mode == WACOM_MODE_HID)
9a77a0f5	321	len = usb_mouse_poll(s, buf, p->iov.size);
f6d2a316	322	else if (s->mode == WACOM_MODE_WACOM)
9a77a0f5 HG	323	len = usb_wacom_poll(s, buf, p->iov.size);
9a77a0f5 HG	324	usb_packet_copy(p, buf, len);
f6d2a316 AZ	325	break;
	326	}
	327	/* Fall through. */
	328	case USB_TOKEN_OUT:
	329	default:
9a77a0f5	330	p->status = USB_RET_STALL;
f6d2a316	331	}
f6d2a316 AZ	332	}
f6d2a316 AZ	333
c4fe9700	334	static void usb_wacom_unrealize(USBDevice dev, Error *errp)
f6d2a316 AZ	335	{
	336	USBWacomState s = (USBWacomState ) dev;
	337
b2d4d832 GH	338	if (s->mouse_grabbed) {
	339	qemu_remove_mouse_event_handler(s->eh_entry);
	340	s->mouse_grabbed = 0;
	341	}
f6d2a316 AZ	342	}
f6d2a316 AZ	343
27107d41	344	static void usb_wacom_realize(USBDevice dev, Error *errp)
f6d2a316	345	{
924e567e	346	USBWacomState *s = USB_WACOM(dev);
9d55d1ad	347	usb_desc_create_serial(dev);
a980a065	348	usb_desc_init(dev);
8beba930	349	s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
2ca2078e	350	s->changed = 1;
806b6024	351	}
f6d2a316	352
ccce9fd2 GH	353	static const VMStateDescription vmstate_usb_wacom = {
	354	.name = "usb-wacom",
	355	.unmigratable = 1,
	356	};
	357
39bffca2	358	static void usb_wacom_class_init(ObjectClass klass, void data)
62aed765	359	{
39bffca2 AL	360	DeviceClass *dc = DEVICE_CLASS(klass);
39bffca2 AL	361	USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
62aed765 AL	362
	363	uc->product_desc = "QEMU PenPartner Tablet";
	364	uc->usb_desc = &desc_wacom;
27107d41	365	uc->realize = usb_wacom_realize;
62aed765 AL	366	uc->handle_reset = usb_wacom_handle_reset;
	367	uc->handle_control = usb_wacom_handle_control;
	368	uc->handle_data = usb_wacom_handle_data;
c4fe9700	369	uc->unrealize = usb_wacom_unrealize;
125ee0ed	370	set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
39bffca2 AL	371	dc->desc = "QEMU PenPartner Tablet";
39bffca2 AL	372	dc->vmsd = &vmstate_usb_wacom;
62aed765 AL	373	}
62aed765 AL	374
8c43a6f0	375	static const TypeInfo wacom_info = {
924e567e	376	.name = TYPE_USB_WACOM,
39bffca2 AL	377	.parent = TYPE_USB_DEVICE,
	378	.instance_size = sizeof(USBWacomState),
	379	.class_init = usb_wacom_class_init,
806b6024	380	};
f6d2a316	381
83f7d43a	382	static void usb_wacom_register_types(void)
806b6024	383	{
39bffca2	384	type_register_static(&wacom_info);
924e567e	385	usb_legacy_register(TYPE_USB_WACOM, "wacom-tablet", NULL);
f6d2a316	386	}
83f7d43a AF	387
83f7d43a AF	388	type_init(usb_wacom_register_types)