gwj / at91sam9263 · Commits

Commit f6d2a316d222953a25e357e141e374ef4d837079

Authored by balrog
1 parent a2502b58

Wacom PenPartner tablet (virtual USB device). 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2977 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 5 changed files with 422 additions and 0 deletions
Makefile.target
  View file @f6d2a31
... ... @@ -409,6 +409,7 @@ VL_OBJS+= scsi-disk.o cdrom.o lsi53c895a.o
409 409  
410 410 # USB layer
411 411 VL_OBJS+= usb.o usb-hub.o usb-linux.o usb-hid.o usb-ohci.o usb-msd.o
  412 +VL_OBJS+= usb-wacom.o
412 413  
413 414 # EEPROM emulation
414 415 VL_OBJS += eeprom93xx.o
... ...
hw/usb-wacom.c 0 → 100644
  View file @f6d2a31
  1 +/*
  2 + * Wacom PenPartner USB tablet emulation.
  3 + *
  4 + * Copyright (c) 2006 Openedhand Ltd.
  5 + * Author: Andrzej Zaborowski <balrog@zabor.org>
  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 + */
  28 +#include "vl.h"
  29 +
  30 +/* Interface requests */
  31 +#define WACOM_GET_REPORT 0x2101
  32 +#define WACOM_SET_REPORT 0x2109
  33 +
  34 +/* HID interface requests */
  35 +#define HID_GET_REPORT 0xa101
  36 +#define HID_GET_IDLE 0xa102
  37 +#define HID_GET_PROTOCOL 0xa103
  38 +#define HID_SET_IDLE 0x210a
  39 +#define HID_SET_PROTOCOL 0x210b
  40 +
  41 +typedef struct USBWacomState {
  42 + USBDevice dev;
  43 + QEMUPutMouseEntry *eh_entry;
  44 + int dx, dy, dz, buttons_state;
  45 + int x, y;
  46 + int mouse_grabbed;
  47 + enum {
  48 + WACOM_MODE_HID = 1,
  49 + WACOM_MODE_WACOM = 2,
  50 + } mode;
  51 +} USBWacomState;
  52 +
  53 +static const uint8_t qemu_wacom_dev_descriptor[] = {
  54 + 0x12, /* u8 bLength; */
  55 + 0x01, /* u8 bDescriptorType; Device */
  56 + 0x10, 0x10, /* u16 bcdUSB; v1.10 */
  57 +
  58 + 0x00, /* u8 bDeviceClass; */
  59 + 0x00, /* u8 bDeviceSubClass; */
  60 + 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */
  61 + 0x08, /* u8 bMaxPacketSize0; 8 Bytes */
  62 +
  63 + 0x6a, 0x05, /* u16 idVendor; */
  64 + 0x00, 0x00, /* u16 idProduct; */
  65 + 0x10, 0x42, /* u16 bcdDevice */
  66 +
  67 + 0x01, /* u8 iManufacturer; */
  68 + 0x02, /* u8 iProduct; */
  69 + 0x00, /* u8 iSerialNumber; */
  70 + 0x01, /* u8 bNumConfigurations; */
  71 +};
  72 +
  73 +static const uint8_t qemu_wacom_config_descriptor[] = {
  74 + /* one configuration */
  75 + 0x09, /* u8 bLength; */
  76 + 0x02, /* u8 bDescriptorType; Configuration */
  77 + 0x22, 0x00, /* u16 wTotalLength; */
  78 + 0x01, /* u8 bNumInterfaces; (1) */
  79 + 0x01, /* u8 bConfigurationValue; */
  80 + 0x00, /* u8 iConfiguration; */
  81 + 0x80, /* u8 bmAttributes;
  82 + Bit 7: must be set,
  83 + 6: Self-powered,
  84 + 5: Remote wakeup,
  85 + 4..0: resvd */
  86 + 40, /* u8 MaxPower; */
  87 +
  88 + /* one interface */
  89 + 0x09, /* u8 if_bLength; */
  90 + 0x04, /* u8 if_bDescriptorType; Interface */
  91 + 0x00, /* u8 if_bInterfaceNumber; */
  92 + 0x00, /* u8 if_bAlternateSetting; */
  93 + 0x01, /* u8 if_bNumEndpoints; */
  94 + 0x03, /* u8 if_bInterfaceClass; HID */
  95 + 0x01, /* u8 if_bInterfaceSubClass; Boot */
  96 + 0x02, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
  97 + 0x00, /* u8 if_iInterface; */
  98 +
  99 + /* HID descriptor */
  100 + 0x09, /* u8 bLength; */
  101 + 0x21, /* u8 bDescriptorType; */
  102 + 0x01, 0x10, /* u16 HID_class */
  103 + 0x00, /* u8 country_code */
  104 + 0x01, /* u8 num_descriptors */
  105 + 0x22, /* u8 type; Report */
  106 + 0x6e, 0x00, /* u16 len */
  107 +
  108 + /* one endpoint (status change endpoint) */
  109 + 0x07, /* u8 ep_bLength; */
  110 + 0x05, /* u8 ep_bDescriptorType; Endpoint */
  111 + 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */
  112 + 0x03, /* u8 ep_bmAttributes; Interrupt */
  113 + 0x08, 0x00, /* u16 ep_wMaxPacketSize; */
  114 + 0x0a, /* u8 ep_bInterval; */
  115 +};
  116 +
  117 +static void usb_mouse_event(void *opaque,
  118 + int dx1, int dy1, int dz1, int buttons_state)
  119 +{
  120 + USBWacomState *s = opaque;
  121 +
  122 + s->dx += dx1;
  123 + s->dy += dy1;
  124 + s->dz += dz1;
  125 + s->buttons_state = buttons_state;
  126 +}
  127 +
  128 +static void usb_wacom_event(void *opaque,
  129 + int x, int y, int dz, int buttons_state)
  130 +{
  131 + USBWacomState *s = opaque;
  132 +
  133 + s->x = x;
  134 + s->y = y;
  135 + s->dz += dz;
  136 + s->buttons_state = buttons_state;
  137 +}
  138 +
  139 +static inline int int_clamp(int val, int vmin, int vmax)
  140 +{
  141 + if (val < vmin)
  142 + return vmin;
  143 + else if (val > vmax)
  144 + return vmax;
  145 + else
  146 + return val;
  147 +}
  148 +
  149 +static int usb_mouse_poll(USBWacomState *s, uint8_t *buf, int len)
  150 +{
  151 + int dx, dy, dz, b, l;
  152 +
  153 + if (!s->mouse_grabbed) {
  154 + s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s, 0,
  155 + "QEMU PenPartner tablet");
  156 + s->mouse_grabbed = 1;
  157 + }
  158 +
  159 + dx = int_clamp(s->dx, -128, 127);
  160 + dy = int_clamp(s->dy, -128, 127);
  161 + dz = int_clamp(s->dz, -128, 127);
  162 +
  163 + s->dx -= dx;
  164 + s->dy -= dy;
  165 + s->dz -= dz;
  166 +
  167 + b = 0;
  168 + if (s->buttons_state & MOUSE_EVENT_LBUTTON)
  169 + b |= 0x01;
  170 + if (s->buttons_state & MOUSE_EVENT_RBUTTON)
  171 + b |= 0x02;
  172 + if (s->buttons_state & MOUSE_EVENT_MBUTTON)
  173 + b |= 0x04;
  174 +
  175 + buf[0] = b;
  176 + buf[1] = dx;
  177 + buf[2] = dy;
  178 + l = 3;
  179 + if (len >= 4) {
  180 + buf[3] = dz;
  181 + l = 4;
  182 + }
  183 + return l;
  184 +}
  185 +
  186 +static int usb_wacom_poll(USBWacomState *s, uint8_t *buf, int len)
  187 +{
  188 + int b;
  189 +
  190 + if (!s->mouse_grabbed) {
  191 + s->eh_entry = qemu_add_mouse_event_handler(usb_wacom_event, s, 1,
  192 + "QEMU PenPartner tablet");
  193 + s->mouse_grabbed = 1;
  194 + }
  195 +
  196 + b = 0;
  197 + if (s->buttons_state & MOUSE_EVENT_LBUTTON)
  198 + b |= 0x01;
  199 + if (s->buttons_state & MOUSE_EVENT_RBUTTON)
  200 + b |= 0x02;
  201 + if (s->buttons_state & MOUSE_EVENT_MBUTTON)
  202 + b |= 0x04;
  203 +
  204 + if (len < 7)
  205 + return 0;
  206 +
  207 + buf[0] = s->mode;
  208 + buf[5] = 0x00;
  209 + if (b) {
  210 + buf[1] = s->x & 0xff;
  211 + buf[2] = s->x >> 8;
  212 + buf[3] = s->y & 0xff;
  213 + buf[4] = s->y >> 8;
  214 + buf[6] = 0;
  215 + } else {
  216 + buf[1] = 0;
  217 + buf[2] = 0;
  218 + buf[3] = 0;
  219 + buf[4] = 0;
  220 + buf[6] = (unsigned char) -127;
  221 + }
  222 +
  223 + return 7;
  224 +}
  225 +
  226 +static void usb_wacom_handle_reset(USBDevice *dev)
  227 +{
  228 + USBWacomState *s = (USBWacomState *) dev;
  229 +
  230 + s->dx = 0;
  231 + s->dy = 0;
  232 + s->dz = 0;
  233 + s->x = 0;
  234 + s->y = 0;
  235 + s->buttons_state = 0;
  236 + s->mode = WACOM_MODE_HID;
  237 +}
  238 +
  239 +static int usb_wacom_handle_control(USBDevice *dev, int request, int value,
  240 + int index, int length, uint8_t *data)
  241 +{
  242 + USBWacomState *s = (USBWacomState *) dev;
  243 + int ret = 0;
  244 +
  245 + switch (request) {
  246 + case DeviceRequest | USB_REQ_GET_STATUS:
  247 + data[0] = (1 << USB_DEVICE_SELF_POWERED) |
  248 + (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
  249 + data[1] = 0x00;
  250 + ret = 2;
  251 + break;
  252 + case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
  253 + if (value == USB_DEVICE_REMOTE_WAKEUP) {
  254 + dev->remote_wakeup = 0;
  255 + } else {
  256 + goto fail;
  257 + }
  258 + ret = 0;
  259 + break;
  260 + case DeviceOutRequest | USB_REQ_SET_FEATURE:
  261 + if (value == USB_DEVICE_REMOTE_WAKEUP) {
  262 + dev->remote_wakeup = 1;
  263 + } else {
  264 + goto fail;
  265 + }
  266 + ret = 0;
  267 + break;
  268 + case DeviceOutRequest | USB_REQ_SET_ADDRESS:
  269 + dev->addr = value;
  270 + ret = 0;
  271 + break;
  272 + case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
  273 + switch (value >> 8) {
  274 + case USB_DT_DEVICE:
  275 + memcpy(data, qemu_wacom_dev_descriptor,
  276 + sizeof(qemu_wacom_dev_descriptor));
  277 + ret = sizeof(qemu_wacom_dev_descriptor);
  278 + break;
  279 + case USB_DT_CONFIG:
  280 + memcpy(data, qemu_wacom_config_descriptor,
  281 + sizeof(qemu_wacom_config_descriptor));
  282 + ret = sizeof(qemu_wacom_config_descriptor);
  283 + break;
  284 + case USB_DT_STRING:
  285 + switch (value & 0xff) {
  286 + case 0:
  287 + /* language ids */
  288 + data[0] = 4;
  289 + data[1] = 3;
  290 + data[2] = 0x09;
  291 + data[3] = 0x04;
  292 + ret = 4;
  293 + break;
  294 + case 1:
  295 + /* serial number */
  296 + ret = set_usb_string(data, "1");
  297 + break;
  298 + case 2:
  299 + ret = set_usb_string(data, "Wacom PenPartner");
  300 + break;
  301 + case 3:
  302 + /* vendor description */
  303 + ret = set_usb_string(data, "QEMU " QEMU_VERSION);
  304 + break;
  305 + case 4:
  306 + ret = set_usb_string(data, "Wacom Tablet");
  307 + break;
  308 + case 5:
  309 + ret = set_usb_string(data, "Endpoint1 Interrupt Pipe");
  310 + break;
  311 + default:
  312 + goto fail;
  313 + }
  314 + break;
  315 + default:
  316 + goto fail;
  317 + }
  318 + break;
  319 + case DeviceRequest | USB_REQ_GET_CONFIGURATION:
  320 + data[0] = 1;
  321 + ret = 1;
  322 + break;
  323 + case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
  324 + ret = 0;
  325 + break;
  326 + case DeviceRequest | USB_REQ_GET_INTERFACE:
  327 + data[0] = 0;
  328 + ret = 1;
  329 + break;
  330 + case DeviceOutRequest | USB_REQ_SET_INTERFACE:
  331 + ret = 0;
  332 + break;
  333 + case WACOM_SET_REPORT:
  334 + qemu_remove_mouse_event_handler(s->eh_entry);
  335 + s->mouse_grabbed = 0;
  336 + s->mode = data[0];
  337 + ret = 0;
  338 + break;
  339 + case WACOM_GET_REPORT:
  340 + data[0] = 0;
  341 + data[1] = s->mode;
  342 + ret = 2;
  343 + break;
  344 + /* USB HID requests */
  345 + case HID_GET_REPORT:
  346 + if (s->mode == WACOM_MODE_HID)
  347 + ret = usb_mouse_poll(s, data, length);
  348 + else if (s->mode == WACOM_MODE_WACOM)
  349 + ret = usb_wacom_poll(s, data, length);
  350 + break;
  351 + case HID_SET_IDLE:
  352 + ret = 0;
  353 + break;
  354 + default:
  355 + fail:
  356 + ret = USB_RET_STALL;
  357 + break;
  358 + }
  359 + return ret;
  360 +}
  361 +
  362 +static int usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
  363 +{
  364 + USBWacomState *s = (USBWacomState *) dev;
  365 + int ret = 0;
  366 +
  367 + switch (p->pid) {
  368 + case USB_TOKEN_IN:
  369 + if (p->devep == 1) {
  370 + if (s->mode == WACOM_MODE_HID)
  371 + ret = usb_mouse_poll(s, p->data, p->len);
  372 + else if (s->mode == WACOM_MODE_WACOM)
  373 + ret = usb_wacom_poll(s, p->data, p->len);
  374 + break;
  375 + }
  376 + /* Fall through. */
  377 + case USB_TOKEN_OUT:
  378 + default:
  379 + ret = USB_RET_STALL;
  380 + break;
  381 + }
  382 + return ret;
  383 +}
  384 +
  385 +static void usb_wacom_handle_destroy(USBDevice *dev)
  386 +{
  387 + USBWacomState *s = (USBWacomState *) dev;
  388 +
  389 + qemu_remove_mouse_event_handler(s->eh_entry);
  390 + qemu_free(s);
  391 +}
  392 +
  393 +USBDevice *usb_wacom_init(void)
  394 +{
  395 + USBWacomState *s;
  396 +
  397 + s = qemu_mallocz(sizeof(USBWacomState));
  398 + if (!s)
  399 + return NULL;
  400 + s->dev.speed = USB_SPEED_FULL;
  401 + s->dev.handle_packet = usb_generic_handle_packet;
  402 +
  403 + s->dev.handle_reset = usb_wacom_handle_reset;
  404 + s->dev.handle_control = usb_wacom_handle_control;
  405 + s->dev.handle_data = usb_wacom_handle_data;
  406 + s->dev.handle_destroy = usb_wacom_handle_destroy;
  407 +
  408 + pstrcpy(s->dev.devname, sizeof(s->dev.devname),
  409 + "QEMU PenPartner Tablet");
  410 +
  411 + return (USBDevice *) s;
  412 +}
... ...
hw/usb.h
  View file @f6d2a31
... ... @@ -221,3 +221,6 @@ USBDevice *usb_tablet_init(void);
221 221  
222 222 /* usb-msd.c */
223 223 USBDevice *usb_msd_init(const char *filename);
  224 +
  225 +/* usb-wacom.c */
  226 +USBDevice *usb_wacom_init(void);
... ...
qemu-doc.texi
  View file @f6d2a31
... ... @@ -1358,6 +1358,10 @@ Pass through the host device identified by @var{bus.addr}
1358 1358 @item @code{host:vendor_id:product_id}
1359 1359 Pass through the host device identified by @var{vendor_id:product_id}
1360 1360 (Linux only)
  1361 +@item @code{wacom-tablet}
  1362 +Virtual Wacom PenPartner tablet. This device is similar to the @code{tablet}
  1363 +above but it can be used with the tslib library because in addition to touch
  1364 +coordinates it reports touch pressure.
1361 1365 @end table
1362 1366  
1363 1367 @node host_usb_devices
... ...
... ... @@ -4321,6 +4321,8 @@ static int usb_device_add(const char *devname)
4321 4321 dev = usb_tablet_init();
4322 4322 } else if (strstart(devname, "disk:", &p)) {
4323 4323 dev = usb_msd_init(p);
  4324 + } else if (!strcmp(devname, "wacom-tablet")) {
  4325 + dev = usb_wacom_init();
4324 4326 } else {
4325 4327 return -1;
4326 4328 }
... ...