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
29 #include "qemu/osdep.h"
30 #include "ui/console.h"
32 #include "hw/usb/hid.h"
33 #include "migration/vmstate.h"
34 #include "qemu/module.h"
36 #include "qom/object.h"
38 /* Interface requests */
39 #define WACOM_GET_REPORT 0x2101
40 #define WACOM_SET_REPORT 0x2109
42 struct USBWacomState {
45 QEMUPutMouseEntry *eh_entry;
46 int dx, dy, dz, buttons_state;
57 #define TYPE_USB_WACOM "usb-wacom-tablet"
58 OBJECT_DECLARE_SIMPLE_TYPE(USBWacomState, USB_WACOM)
66 static const USBDescStrings desc_strings = {
67 [STR_MANUFACTURER] = "QEMU",
68 [STR_PRODUCT] = "Wacom PenPartner",
69 [STR_SERIALNUMBER] = "1",
72 static const USBDescIface desc_iface_wacom = {
73 .bInterfaceNumber = 0,
75 .bInterfaceClass = USB_CLASS_HID,
76 .bInterfaceSubClass = 0x01, /* boot */
77 .bInterfaceProtocol = 0x02,
79 .descs = (USBDescOther[]) {
83 0x09, /* u8 bLength */
84 USB_DT_HID, /* u8 bDescriptorType */
85 0x01, 0x10, /* u16 HID_class */
86 0x00, /* u8 country_code */
87 0x01, /* u8 num_descriptors */
88 USB_DT_REPORT, /* u8 type: Report */
89 0x6e, 0, /* u16 len */
93 .eps = (USBDescEndpoint[]) {
95 .bEndpointAddress = USB_DIR_IN | 0x01,
96 .bmAttributes = USB_ENDPOINT_XFER_INT,
103 static const USBDescDevice desc_device_wacom = {
105 .bMaxPacketSize0 = 8,
106 .bNumConfigurations = 1,
107 .confs = (USBDescConfig[]) {
110 .bConfigurationValue = 1,
111 .bmAttributes = USB_CFG_ATT_ONE,
114 .ifs = &desc_iface_wacom,
119 static const USBDesc desc_wacom = {
124 .iManufacturer = STR_MANUFACTURER,
125 .iProduct = STR_PRODUCT,
126 .iSerialNumber = STR_SERIALNUMBER,
128 .full = &desc_device_wacom,
132 static void usb_mouse_event(void *opaque,
133 int dx1, int dy1, int dz1, int buttons_state)
135 USBWacomState *s = opaque;
140 s->buttons_state = buttons_state;
142 usb_wakeup(s->intr, 0);
145 static void usb_wacom_event(void *opaque,
146 int x, int y, int dz, int buttons_state)
148 USBWacomState *s = opaque;
150 /* scale to Penpartner resolution */
151 s->x = (x * 5040 / 0x7FFF);
152 s->y = (y * 3780 / 0x7FFF);
154 s->buttons_state = buttons_state;
156 usb_wakeup(s->intr, 0);
159 static inline int int_clamp(int val, int vmin, int vmax)
169 static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len)
171 int dx, dy, dz, b, l;
173 if (!s->mouse_grabbed) {
174 s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
175 "QEMU PenPartner tablet");
176 qemu_activate_mouse_event_handler(s->eh_entry);
177 s->mouse_grabbed = 1;
180 dx = int_clamp(s->dx, -128, 127);
181 dy = int_clamp(s->dy, -128, 127);
182 dz = int_clamp(s->dz, -128, 127);
189 if (s->buttons_state & MOUSE_EVENT_LBUTTON)
191 if (s->buttons_state & MOUSE_EVENT_RBUTTON)
193 if (s->buttons_state & MOUSE_EVENT_MBUTTON)
207 static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len)
211 if (!s->mouse_grabbed) {
212 s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
213 "QEMU PenPartner tablet");
214 qemu_activate_mouse_event_handler(s->eh_entry);
215 s->mouse_grabbed = 1;
219 if (s->buttons_state & MOUSE_EVENT_LBUTTON)
221 if (s->buttons_state & MOUSE_EVENT_RBUTTON)
223 if (s->buttons_state & MOUSE_EVENT_MBUTTON)
224 b |= 0x20; /* eraser */
230 buf[5] = 0x00 | (b & 0xf0);
231 buf[1] = s->x & 0xff;
233 buf[3] = s->y & 0xff;
238 buf[6] = (unsigned char) -127;
244 static void usb_wacom_handle_reset(USBDevice *dev)
246 USBWacomState *s = (USBWacomState *) dev;
253 s->buttons_state = 0;
254 s->mode = WACOM_MODE_HID;
257 static void usb_wacom_handle_control(USBDevice *dev, USBPacket *p,
258 int request, int value, int index, int length, uint8_t *data)
260 USBWacomState *s = (USBWacomState *) dev;
263 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
269 case WACOM_SET_REPORT:
270 if (s->mouse_grabbed) {
271 qemu_remove_mouse_event_handler(s->eh_entry);
272 s->mouse_grabbed = 0;
276 case WACOM_GET_REPORT:
279 p->actual_length = 2;
281 /* USB HID requests */
283 if (s->mode == WACOM_MODE_HID)
284 p->actual_length = usb_mouse_poll(s, data, length);
285 else if (s->mode == WACOM_MODE_WACOM)
286 p->actual_length = usb_wacom_poll(s, data, length);
290 p->actual_length = 1;
293 s->idle = (uint8_t) (value >> 8);
296 p->status = USB_RET_STALL;
301 static void usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
303 USBWacomState *s = (USBWacomState *) dev;
304 uint8_t buf[p->iov.size];
309 if (p->ep->nr == 1) {
310 if (!(s->changed || s->idle)) {
311 p->status = USB_RET_NAK;
315 if (s->mode == WACOM_MODE_HID)
316 len = usb_mouse_poll(s, buf, p->iov.size);
317 else if (s->mode == WACOM_MODE_WACOM)
318 len = usb_wacom_poll(s, buf, p->iov.size);
319 usb_packet_copy(p, buf, len);
325 p->status = USB_RET_STALL;
329 static void usb_wacom_unrealize(USBDevice *dev)
331 USBWacomState *s = (USBWacomState *) dev;
333 if (s->mouse_grabbed) {
334 qemu_remove_mouse_event_handler(s->eh_entry);
335 s->mouse_grabbed = 0;
339 static void usb_wacom_realize(USBDevice *dev, Error **errp)
341 USBWacomState *s = USB_WACOM(dev);
342 usb_desc_create_serial(dev);
344 s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
348 static const VMStateDescription vmstate_usb_wacom = {
353 static void usb_wacom_class_init(ObjectClass *klass, void *data)
355 DeviceClass *dc = DEVICE_CLASS(klass);
356 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
358 uc->product_desc = "QEMU PenPartner Tablet";
359 uc->usb_desc = &desc_wacom;
360 uc->realize = usb_wacom_realize;
361 uc->handle_reset = usb_wacom_handle_reset;
362 uc->handle_control = usb_wacom_handle_control;
363 uc->handle_data = usb_wacom_handle_data;
364 uc->unrealize = usb_wacom_unrealize;
365 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
366 dc->desc = "QEMU PenPartner Tablet";
367 dc->vmsd = &vmstate_usb_wacom;
370 static const TypeInfo wacom_info = {
371 .name = TYPE_USB_WACOM,
372 .parent = TYPE_USB_DEVICE,
373 .instance_size = sizeof(USBWacomState),
374 .class_init = usb_wacom_class_init,
377 static void usb_wacom_register_types(void)
379 type_register_static(&wacom_info);
380 usb_legacy_register(TYPE_USB_WACOM, "wacom-tablet", NULL);
383 type_init(usb_wacom_register_types)