2 * Wacom PenPartner USB tablet emulation.
4 * Copyright (c) 2006 Openedhand Ltd.
7 * Based on hw/usb-hid.c:
8 * Copyright (c) 2005 Fabrice Bellard
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
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
32 /* Interface requests */
33 #define WACOM_GET_REPORT 0x2101
34 #define WACOM_SET_REPORT 0x2109
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
43 typedef struct USBWacomState {
45 QEMUPutMouseEntry *eh_entry;
46 int dx, dy, dz, buttons_state;
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 */
62 0x00, /* u8 bDeviceClass; */
63 0x00, /* u8 bDeviceSubClass; */
64 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */
65 0x08, /* u8 bMaxPacketSize0; 8 Bytes */
67 0x6a, 0x05, /* u16 idVendor; */
68 0x00, 0x00, /* u16 idProduct; */
69 0x10, 0x42, /* u16 bcdDevice */
71 0x01, /* u8 iManufacturer; */
72 0x02, /* u8 iProduct; */
73 0x00, /* u8 iSerialNumber; */
74 0x01, /* u8 bNumConfigurations; */
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; */
85 0x80, /* u8 bmAttributes;
90 40, /* u8 MaxPower; */
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; */
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 */
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; */
121 static void usb_mouse_event(void *opaque,
122 int dx1, int dy1, int dz1, int buttons_state)
124 USBWacomState *s = opaque;
129 s->buttons_state = buttons_state;
133 static void usb_wacom_event(void *opaque,
134 int x, int y, int dz, int buttons_state)
136 USBWacomState *s = opaque;
138 /* scale to Penpartner resolution */
139 s->x = (x * 5040 / 0x7FFF);
140 s->y = (y * 3780 / 0x7FFF);
142 s->buttons_state = buttons_state;
146 static inline int int_clamp(int val, int vmin, int vmax)
156 static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len)
158 int dx, dy, dz, b, l;
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;
166 dx = int_clamp(s->dx, -128, 127);
167 dy = int_clamp(s->dy, -128, 127);
168 dz = int_clamp(s->dz, -128, 127);
175 if (s->buttons_state & MOUSE_EVENT_LBUTTON)
177 if (s->buttons_state & MOUSE_EVENT_RBUTTON)
179 if (s->buttons_state & MOUSE_EVENT_MBUTTON)
193 static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len)
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;
204 if (s->buttons_state & MOUSE_EVENT_LBUTTON)
206 if (s->buttons_state & MOUSE_EVENT_RBUTTON)
208 if (s->buttons_state & MOUSE_EVENT_MBUTTON)
209 b |= 0x20; /* eraser */
215 buf[5] = 0x00 | (b & 0xf0);
216 buf[1] = s->x & 0xff;
218 buf[3] = s->y & 0xff;
223 buf[6] = (unsigned char) -127;
229 static void usb_wacom_handle_reset(USBDevice *dev)
231 USBWacomState *s = (USBWacomState *) dev;
238 s->buttons_state = 0;
239 s->mode = WACOM_MODE_HID;
242 static int usb_wacom_handle_control(USBDevice *dev, int request, int value,
243 int index, int length, uint8_t *data)
245 USBWacomState *s = (USBWacomState *) dev;
249 case DeviceRequest | USB_REQ_GET_STATUS:
250 data[0] = (1 << USB_DEVICE_SELF_POWERED) |
251 (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
255 case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
256 if (value == USB_DEVICE_REMOTE_WAKEUP) {
257 dev->remote_wakeup = 0;
263 case DeviceOutRequest | USB_REQ_SET_FEATURE:
264 if (value == USB_DEVICE_REMOTE_WAKEUP) {
265 dev->remote_wakeup = 1;
271 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
275 case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
276 switch (value >> 8) {
278 memcpy(data, qemu_wacom_dev_descriptor,
279 sizeof(qemu_wacom_dev_descriptor));
280 ret = sizeof(qemu_wacom_dev_descriptor);
283 memcpy(data, qemu_wacom_config_descriptor,
284 sizeof(qemu_wacom_config_descriptor));
285 ret = sizeof(qemu_wacom_config_descriptor);
288 switch (value & 0xff) {
299 ret = set_usb_string(data, "1");
302 ret = set_usb_string(data, "Wacom PenPartner");
305 /* vendor description */
306 ret = set_usb_string(data, "QEMU " QEMU_VERSION);
309 ret = set_usb_string(data, "Wacom Tablet");
312 ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
322 case DeviceRequest | USB_REQ_GET_CONFIGURATION:
326 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
329 case DeviceRequest | USB_REQ_GET_INTERFACE:
333 case DeviceOutRequest | USB_REQ_SET_INTERFACE:
336 case WACOM_SET_REPORT:
337 qemu_remove_mouse_event_handler(s->eh_entry);
338 s->mouse_grabbed = 0;
342 case WACOM_GET_REPORT:
347 /* USB HID requests */
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);
359 s->idle = (uint8_t) (value >> 8);
370 static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
372 USBWacomState *s = (USBWacomState *) dev;
378 if (!(s->changed || s->idle))
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);
396 static void usb_wacom_handle_destroy(USBDevice *dev)
398 USBWacomState *s = (USBWacomState *) dev;
400 qemu_remove_mouse_event_handler(s->eh_entry);
403 static int usb_wacom_initfn(USBDevice *dev)
405 USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
406 s->dev.speed = USB_SPEED_FULL;
411 static struct USBDeviceInfo wacom_info = {
412 .product_desc = "QEMU PenPartner Tablet",
413 .qdev.name = "usb-wacom-tablet",
414 .qdev.desc = "QEMU PenPartner Tablet",
415 .usbdevice_name = "wacom-tablet",
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,
425 static void usb_wacom_register_devices(void)
427 usb_qdev_register(&wacom_info);
429 device_init(usb_wacom_register_devices)