[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"

/* 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;

static const uint8_t qemu_wacom_dev_descriptor[] = {
    0x12,	/*  u8 bLength; */
    0x01,	/*  u8 bDescriptorType; Device */
    0x10, 0x10,	/*  u16 bcdUSB; v1.10 */

    0x00,	/*  u8  bDeviceClass; */
    0x00,	/*  u8  bDeviceSubClass; */
    0x00,	/*  u8  bDeviceProtocol; [ low/full speeds only ] */
    0x08,	/*  u8  bMaxPacketSize0; 8 Bytes */

    0x6a, 0x05,	/*  u16 idVendor; */
    0x00, 0x00,	/*  u16 idProduct; */
    0x10, 0x42,	/*  u16 bcdDevice */

    0x01,	/*  u8  iManufacturer; */
    0x02,	/*  u8  iProduct; */
    0x00,	/*  u8  iSerialNumber; */
    0x01,	/*  u8  bNumConfigurations; */
};

static const uint8_t qemu_wacom_config_descriptor[] = {
    /* one configuration */
    0x09,	/*  u8  bLength; */
    0x02,	/*  u8  bDescriptorType; Configuration */
    0x22, 0x00,	/*  u16 wTotalLength; */
    0x01,	/*  u8  bNumInterfaces; (1) */
    0x01,	/*  u8  bConfigurationValue; */
    0x00,	/*  u8  iConfiguration; */
    0x80,	/*  u8  bmAttributes;
				 Bit 7: must be set,
				     6: Self-powered,
				     5: Remote wakeup,
				     4..0: resvd */
    40,		/*  u8  MaxPower; */

    /* one interface */
    0x09,	/*  u8  if_bLength; */
    0x04,	/*  u8  if_bDescriptorType; Interface */
    0x00,	/*  u8  if_bInterfaceNumber; */
    0x00,	/*  u8  if_bAlternateSetting; */
    0x01,	/*  u8  if_bNumEndpoints; */
    0x03,	/*  u8  if_bInterfaceClass; HID */
    0x01,	/*  u8  if_bInterfaceSubClass; Boot */
    0x02,	/*  u8  if_bInterfaceProtocol; [usb1.1 or single tt] */
    0x00,	/*  u8  if_iInterface; */

    /* HID descriptor */
    0x09,	/*  u8  bLength; */
    0x21,	/*  u8  bDescriptorType; */
    0x01, 0x10,	/*  u16 HID_class */
    0x00,	/*  u8  country_code */
    0x01,	/*  u8  num_descriptors */
    0x22,	/*  u8  type; Report */
    0x6e, 0x00,	/*  u16 len */

    /* one endpoint (status change endpoint) */
    0x07,	/*  u8  ep_bLength; */
    0x05,	/*  u8  ep_bDescriptorType; Endpoint */
    0x81,	/*  u8  ep_bEndpointAddress; IN Endpoint 1 */
    0x03,	/*  u8  ep_bmAttributes; Interrupt */
    0x08, 0x00,	/*  u16 ep_wMaxPacketSize; */
    0x0a,	/*  u8  ep_bInterval; */
};

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");
        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");
        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 = 0;

    switch (request) {
    case DeviceRequest | USB_REQ_GET_STATUS:
        data[0] = (1 << USB_DEVICE_SELF_POWERED) |
            (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
        data[1] = 0x00;
        ret = 2;
        break;
    case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
        if (value == USB_DEVICE_REMOTE_WAKEUP) {
            dev->remote_wakeup = 0;
        } else {
            goto fail;
        }
        ret = 0;
        break;
    case DeviceOutRequest | USB_REQ_SET_FEATURE:
        if (value == USB_DEVICE_REMOTE_WAKEUP) {
            dev->remote_wakeup = 1;
        } else {
            goto fail;
        }
        ret = 0;
        break;
    case DeviceOutRequest | USB_REQ_SET_ADDRESS:
        dev->addr = value;
        ret = 0;
        break;
    case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
        switch (value >> 8) {
        case USB_DT_DEVICE:
            memcpy(data, qemu_wacom_dev_descriptor,
                   sizeof(qemu_wacom_dev_descriptor));
            ret = sizeof(qemu_wacom_dev_descriptor);
            break;
        case USB_DT_CONFIG:
       	    memcpy(data, qemu_wacom_config_descriptor,
                   sizeof(qemu_wacom_config_descriptor));
            ret = sizeof(qemu_wacom_config_descriptor);
            break;
        case USB_DT_STRING:
            switch (value & 0xff) {
            case 0:
                /* language ids */
                data[0] = 4;
                data[1] = 3;
                data[2] = 0x09;
                data[3] = 0x04;
                ret = 4;
                break;
            case 1:
                /* serial number */
                ret = set_usb_string(data, "1");
                break;
            case 2:
		ret = set_usb_string(data, "Wacom PenPartner");
                break;
            case 3:
                /* vendor description */
                ret = set_usb_string(data, "QEMU " QEMU_VERSION);
                break;
            case 4:
                ret = set_usb_string(data, "Wacom Tablet");
                break;
            case 5:
                ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
                break;
            default:
                goto fail;
            }
            break;
        default:
            goto fail;
        }
        break;
    case DeviceRequest | USB_REQ_GET_CONFIGURATION:
        data[0] = 1;
        ret = 1;
        break;
    case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
        ret = 0;
        break;
    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:
        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:
    fail:
        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;

    qemu_remove_mouse_event_handler(s->eh_entry);
}

static int usb_wacom_initfn(USBDevice *dev)
{
    USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
    s->dev.speed = USB_SPEED_FULL;
    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",
    .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"
f6d2a316 AZ	31
	32	/* Interface requests */
	33	#define WACOM_GET_REPORT 0x2101
	34	#define WACOM_SET_REPORT 0x2109
	35
	36	/* HID interface requests */
	37	#define HID_GET_REPORT 0xa101
	38	#define HID_GET_IDLE 0xa102
	39	#define HID_GET_PROTOCOL 0xa103
	40	#define HID_SET_IDLE 0x210a
	41	#define HID_SET_PROTOCOL 0x210b
	42
	43	typedef struct USBWacomState {
	44	USBDevice dev;
	45	QEMUPutMouseEntry *eh_entry;
	46	int dx, dy, dz, buttons_state;
	47	int x, y;
	48	int mouse_grabbed;
	49	enum {
	50	WACOM_MODE_HID = 1,
	51	WACOM_MODE_WACOM = 2,
	52	} mode;
2ca2078e FR	53	uint8_t idle;
2ca2078e FR	54	int changed;
f6d2a316 AZ	55	} USBWacomState;
	56
	57	static const uint8_t qemu_wacom_dev_descriptor[] = {
	58	0x12, /* u8 bLength; */
	59	0x01, /* u8 bDescriptorType; Device */
	60	0x10, 0x10, /* u16 bcdUSB; v1.10 */
	61
	62	0x00, /* u8 bDeviceClass; */
	63	0x00, /* u8 bDeviceSubClass; */
	64	0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */
	65	0x08, /* u8 bMaxPacketSize0; 8 Bytes */
	66
	67	0x6a, 0x05, /* u16 idVendor; */
	68	0x00, 0x00, /* u16 idProduct; */
	69	0x10, 0x42, /* u16 bcdDevice */
	70
	71	0x01, /* u8 iManufacturer; */
	72	0x02, /* u8 iProduct; */
	73	0x00, /* u8 iSerialNumber; */
	74	0x01, /* u8 bNumConfigurations; */
	75	};
	76
	77	static const uint8_t qemu_wacom_config_descriptor[] = {
	78	/* one configuration */
	79	0x09, /* u8 bLength; */
	80	0x02, /* u8 bDescriptorType; Configuration */
	81	0x22, 0x00, /* u16 wTotalLength; */
	82	0x01, /* u8 bNumInterfaces; (1) */
	83	0x01, /* u8 bConfigurationValue; */
	84	0x00, /* u8 iConfiguration; */
5fafdf24	85	0x80, /* u8 bmAttributes;
f6d2a316 AZ	86	Bit 7: must be set,
	87	6: Self-powered,
	88	5: Remote wakeup,
	89	4..0: resvd */
	90	40, /* u8 MaxPower; */
	91
	92	/* one interface */
	93	0x09, /* u8 if_bLength; */
	94	0x04, /* u8 if_bDescriptorType; Interface */
	95	0x00, /* u8 if_bInterfaceNumber; */
	96	0x00, /* u8 if_bAlternateSetting; */
	97	0x01, /* u8 if_bNumEndpoints; */
	98	0x03, /* u8 if_bInterfaceClass; HID */
	99	0x01, /* u8 if_bInterfaceSubClass; Boot */
	100	0x02, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
	101	0x00, /* u8 if_iInterface; */
	102
	103	/* HID descriptor */
	104	0x09, /* u8 bLength; */
	105	0x21, /* u8 bDescriptorType; */
	106	0x01, 0x10, /* u16 HID_class */
	107	0x00, /* u8 country_code */
	108	0x01, /* u8 num_descriptors */
	109	0x22, /* u8 type; Report */
	110	0x6e, 0x00, /* u16 len */
	111
	112	/* one endpoint (status change endpoint) */
	113	0x07, /* u8 ep_bLength; */
	114	0x05, /* u8 ep_bDescriptorType; Endpoint */
	115	0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */
	116	0x03, /* u8 ep_bmAttributes; Interrupt */
	117	0x08, 0x00, /* u16 ep_wMaxPacketSize; */
	118	0x0a, /* u8 ep_bInterval; */
	119	};
	120
	121	static void usb_mouse_event(void *opaque,
	122	int dx1, int dy1, int dz1, int buttons_state)
	123	{
	124	USBWacomState *s = opaque;
	125
	126	s->dx += dx1;
	127	s->dy += dy1;
	128	s->dz += dz1;
	129	s->buttons_state = buttons_state;
2ca2078e	130	s->changed = 1;
f6d2a316 AZ	131	}
	132
	133	static void usb_wacom_event(void *opaque,
	134	int x, int y, int dz, int buttons_state)
	135	{
	136	USBWacomState *s = opaque;
	137
2ca2078e FR	138	/* scale to Penpartner resolution */
	139	s->x = (x * 5040 / 0x7FFF);
	140	s->y = (y * 3780 / 0x7FFF);
f6d2a316 AZ	141	s->dz += dz;
f6d2a316 AZ	142	s->buttons_state = buttons_state;
2ca2078e	143	s->changed = 1;
f6d2a316 AZ	144	}
	145
	146	static inline int int_clamp(int val, int vmin, int vmax)
	147	{
	148	if (val < vmin)
	149	return vmin;
	150	else if (val > vmax)
	151	return vmax;
	152	else
	153	return val;
	154	}
	155
	156	static int usb_mouse_poll(USBWacomState s, uint8_t buf, int len)
	157	{
	158	int dx, dy, dz, b, l;
	159
	160	if (!s->mouse_grabbed) {
	161	s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
	162	"QEMU PenPartner tablet");
	163	s->mouse_grabbed = 1;
	164	}
	165
	166	dx = int_clamp(s->dx, -128, 127);
	167	dy = int_clamp(s->dy, -128, 127);
	168	dz = int_clamp(s->dz, -128, 127);
	169
	170	s->dx -= dx;
	171	s->dy -= dy;
	172	s->dz -= dz;
	173
	174	b = 0;
	175	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
	176	b \|= 0x01;
	177	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
	178	b \|= 0x02;
	179	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
	180	b \|= 0x04;
	181
	182	buf[0] = b;
	183	buf[1] = dx;
	184	buf[2] = dy;
	185	l = 3;
	186	if (len >= 4) {
	187	buf[3] = dz;
	188	l = 4;
	189	}
	190	return l;
	191	}
	192
	193	static int usb_wacom_poll(USBWacomState s, uint8_t buf, int len)
	194	{
	195	int b;
	196
	197	if (!s->mouse_grabbed) {
	198	s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
	199	"QEMU PenPartner tablet");
	200	s->mouse_grabbed = 1;
	201	}
	202
	203	b = 0;
	204	if (s->buttons_state & MOUSE_EVENT_LBUTTON)
	205	b \|= 0x01;
	206	if (s->buttons_state & MOUSE_EVENT_RBUTTON)
2ca2078e	207	b \|= 0x40;
f6d2a316	208	if (s->buttons_state & MOUSE_EVENT_MBUTTON)
2ca2078e	209	b \|= 0x20; /* eraser */
f6d2a316 AZ	210
	211	if (len < 7)
	212	return 0;
	213
	214	buf[0] = s->mode;
2ca2078e FR	215	buf[5] = 0x00 \| (b & 0xf0);
	216	buf[1] = s->x & 0xff;
	217	buf[2] = s->x >> 8;
	218	buf[3] = s->y & 0xff;
	219	buf[4] = s->y >> 8;
	220	if (b & 0x3f) {
f6d2a316 AZ	221	buf[6] = 0;
f6d2a316 AZ	222	} else {
f6d2a316 AZ	223	buf[6] = (unsigned char) -127;
	224	}
	225
	226	return 7;
	227	}
	228
	229	static void usb_wacom_handle_reset(USBDevice *dev)
	230	{
	231	USBWacomState s = (USBWacomState ) dev;
	232
	233	s->dx = 0;
	234	s->dy = 0;
	235	s->dz = 0;
	236	s->x = 0;
	237	s->y = 0;
	238	s->buttons_state = 0;
	239	s->mode = WACOM_MODE_HID;
	240	}
	241
	242	static int usb_wacom_handle_control(USBDevice *dev, int request, int value,
	243	int index, int length, uint8_t *data)
	244	{
	245	USBWacomState s = (USBWacomState ) dev;
	246	int ret = 0;
	247
	248	switch (request) {
	249	case DeviceRequest \| USB_REQ_GET_STATUS:
	250	data[0] = (1 << USB_DEVICE_SELF_POWERED) \|
	251	(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
	252	data[1] = 0x00;
	253	ret = 2;
	254	break;
	255	case DeviceOutRequest \| USB_REQ_CLEAR_FEATURE:
	256	if (value == USB_DEVICE_REMOTE_WAKEUP) {
	257	dev->remote_wakeup = 0;
	258	} else {
	259	goto fail;
	260	}
	261	ret = 0;
	262	break;
	263	case DeviceOutRequest \| USB_REQ_SET_FEATURE:
	264	if (value == USB_DEVICE_REMOTE_WAKEUP) {
	265	dev->remote_wakeup = 1;
	266	} else {
	267	goto fail;
	268	}
	269	ret = 0;
	270	break;
	271	case DeviceOutRequest \| USB_REQ_SET_ADDRESS:
	272	dev->addr = value;
	273	ret = 0;
	274	break;
	275	case DeviceRequest \| USB_REQ_GET_DESCRIPTOR:
	276	switch (value >> 8) {
	277	case USB_DT_DEVICE:
5fafdf24	278	memcpy(data, qemu_wacom_dev_descriptor,
f6d2a316 AZ	279	sizeof(qemu_wacom_dev_descriptor));
	280	ret = sizeof(qemu_wacom_dev_descriptor);
	281	break;
	282	case USB_DT_CONFIG:
5fafdf24	283	memcpy(data, qemu_wacom_config_descriptor,
f6d2a316 AZ	284	sizeof(qemu_wacom_config_descriptor));
	285	ret = sizeof(qemu_wacom_config_descriptor);
	286	break;
	287	case USB_DT_STRING:
	288	switch (value & 0xff) {
	289	case 0:
	290	/* language ids */
	291	data[0] = 4;
	292	data[1] = 3;
	293	data[2] = 0x09;
	294	data[3] = 0x04;
	295	ret = 4;
	296	break;
	297	case 1:
	298	/* serial number */
	299	ret = set_usb_string(data, "1");
	300	break;
	301	case 2:
	302	ret = set_usb_string(data, "Wacom PenPartner");
	303	break;
	304	case 3:
	305	/* vendor description */
	306	ret = set_usb_string(data, "QEMU " QEMU_VERSION);
	307	break;
	308	case 4:
	309	ret = set_usb_string(data, "Wacom Tablet");
	310	break;
	311	case 5:
	312	ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
	313	break;
	314	default:
	315	goto fail;
	316	}
	317	break;
	318	default:
	319	goto fail;
	320	}
	321	break;
	322	case DeviceRequest \| USB_REQ_GET_CONFIGURATION:
	323	data[0] = 1;
	324	ret = 1;
	325	break;
	326	case DeviceOutRequest \| USB_REQ_SET_CONFIGURATION:
	327	ret = 0;
	328	break;
	329	case DeviceRequest \| USB_REQ_GET_INTERFACE:
	330	data[0] = 0;
	331	ret = 1;
	332	break;
	333	case DeviceOutRequest \| USB_REQ_SET_INTERFACE:
	334	ret = 0;
	335	break;
	336	case WACOM_SET_REPORT:
	337	qemu_remove_mouse_event_handler(s->eh_entry);
	338	s->mouse_grabbed = 0;
	339	s->mode = data[0];
	340	ret = 0;
	341	break;
	342	case WACOM_GET_REPORT:
	343	data[0] = 0;
	344	data[1] = s->mode;
	345	ret = 2;
	346	break;
	347	/* USB HID requests */
348	case HID_GET_REPORT:
349	if (s->mode == WACOM_MODE_HID)
350	ret = usb_mouse_poll(s, data, length);
351	else if (s->mode == WACOM_MODE_WACOM)
352	ret = usb_wacom_poll(s, data, length);
353	break;
2ca2078e FR	354	case HID_GET_IDLE:
	355	ret = 1;
	356	data[0] = s->idle;
	357	break;
f6d2a316	358	case HID_SET_IDLE:
2ca2078e	359	s->idle = (uint8_t) (value >> 8);
f6d2a316 AZ	360	ret = 0;
	361	break;
	362	default:
	363	fail:
	364	ret = USB_RET_STALL;
	365	break;
	366	}
	367	return ret;
	368	}
	369
	370	static int usb_wacom_handle_data(USBDevice dev, USBPacket p)
	371	{
	372	USBWacomState s = (USBWacomState ) dev;
	373	int ret = 0;
	374
	375	switch (p->pid) {
	376	case USB_TOKEN_IN:
	377	if (p->devep == 1) {
2ca2078e FR	378	if (!(s->changed \|\| s->idle))
	379	return USB_RET_NAK;
	380	s->changed = 0;
f6d2a316 AZ	381	if (s->mode == WACOM_MODE_HID)
	382	ret = usb_mouse_poll(s, p->data, p->len);
	383	else if (s->mode == WACOM_MODE_WACOM)
	384	ret = usb_wacom_poll(s, p->data, p->len);
	385	break;
	386	}
	387	/* Fall through. */
	388	case USB_TOKEN_OUT:
	389	default:
	390	ret = USB_RET_STALL;
	391	break;
	392	}
	393	return ret;
	394	}
	395
	396	static void usb_wacom_handle_destroy(USBDevice *dev)
	397	{
	398	USBWacomState s = (USBWacomState ) dev;
	399
	400	qemu_remove_mouse_event_handler(s->eh_entry);
f6d2a316 AZ	401	}
f6d2a316 AZ	402
806b6024	403	static int usb_wacom_initfn(USBDevice *dev)
f6d2a316	404	{
806b6024	405	USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
f6d2a316	406	s->dev.speed = USB_SPEED_FULL;
2ca2078e	407	s->changed = 1;
806b6024 GH	408	return 0;
806b6024 GH	409	}
f6d2a316	410
806b6024	411	static struct USBDeviceInfo wacom_info = {
06384698	412	.product_desc = "QEMU PenPartner Tablet",
556cd098 MA	413	.qdev.name = "usb-wacom-tablet",
556cd098 MA	414	.qdev.desc = "QEMU PenPartner Tablet",
fa7c70c3	415	.usbdevice_name = "wacom-tablet",
806b6024 GH	416	.qdev.size = sizeof(USBWacomState),
	417	.init = usb_wacom_initfn,
	418	.handle_packet = usb_generic_handle_packet,
	419	.handle_reset = usb_wacom_handle_reset,
	420	.handle_control = usb_wacom_handle_control,
	421	.handle_data = usb_wacom_handle_data,
	422	.handle_destroy = usb_wacom_handle_destroy,
	423	};
f6d2a316	424
806b6024 GH	425	static void usb_wacom_register_devices(void)
	426	{
	427	usb_qdev_register(&wacom_info);
f6d2a316	428	}
806b6024	429	device_init(usb_wacom_register_devices)