1 /* Linux driver for Philips webcam 2 USB and Video4Linux interface part. 3 (C) 1999-2004 Nemosoft Unv. 4 (C) 2004-2006 Luc Saillard (luc@saillard.org) 5 (C) 2011 Hans de Goede <hdegoede@redhat.com> 6 7 NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx 8 driver and thus may have bugs that are not present in the original version. 9 Please send bug reports and support requests to <luc@saillard.org>. 10 The decompression routines have been implemented by reverse-engineering the 11 Nemosoft binary pwcx module. Caveat emptor. 12 13 This program is free software; you can redistribute it and/or modify 14 it under the terms of the GNU General Public License as published by 15 the Free Software Foundation; either version 2 of the License, or 16 (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, 19 but WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 GNU General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 26 27 */ 28 29 /* 30 This code forms the interface between the USB layers and the Philips 31 specific stuff. Some adanved stuff of the driver falls under an 32 NDA, signed between me and Philips B.V., Eindhoven, the Netherlands, and 33 is thus not distributed in source form. The binary pwcx.o module 34 contains the code that falls under the NDA. 35 36 In case you're wondering: 'pwc' stands for "Philips WebCam", but 37 I really didn't want to type 'philips_web_cam' every time (I'm lazy as 38 any Linux kernel hacker, but I don't like uncomprehensible abbreviations 39 without explanation). 40 41 Oh yes, convention: to disctinguish between all the various pointers to 42 device-structures, I use these names for the pointer variables: 43 udev: struct usb_device * 44 vdev: struct video_device (member of pwc_dev) 45 pdev: struct pwc_devive * 46 */ 47 48 /* Contributors: 49 - Alvarado: adding whitebalance code 50 - Alistar Moire: QuickCam 3000 Pro device/product ID 51 - Tony Hoyle: Creative Labs Webcam 5 device/product ID 52 - Mark Burazin: solving hang in VIDIOCSYNC when camera gets unplugged 53 - Jk Fang: Sotec Afina Eye ID 54 - Xavier Roche: QuickCam Pro 4000 ID 55 - Jens Knudsen: QuickCam Zoom ID 56 - J. Debert: QuickCam for Notebooks ID 57 - Pham Thanh Nam: webcam snapshot button as an event input device 58 */ 59 60 #include <linux/errno.h> 61 #include <linux/init.h> 62 #include <linux/mm.h> 63 #include <linux/module.h> 64 #include <linux/poll.h> 65 #include <linux/slab.h> 66 #ifdef CONFIG_USB_PWC_INPUT_EVDEV 67 #include <linux/usb/input.h> 68 #endif 69 #include <linux/vmalloc.h> 70 #include <asm/io.h> 71 #include <linux/kernel.h> /* simple_strtol() */ 72 73 #include "pwc.h" 74 #include "pwc-kiara.h" 75 #include "pwc-timon.h" 76 #include "pwc-dec23.h" 77 #include "pwc-dec1.h" 78 79 /* Function prototypes and driver templates */ 80 81 /* hotplug device table support */ 82 static const struct usb_device_id pwc_device_table [] = { 83 { USB_DEVICE(0x0471, 0x0302) }, /* Philips models */ 84 { USB_DEVICE(0x0471, 0x0303) }, 85 { USB_DEVICE(0x0471, 0x0304) }, 86 { USB_DEVICE(0x0471, 0x0307) }, 87 { USB_DEVICE(0x0471, 0x0308) }, 88 { USB_DEVICE(0x0471, 0x030C) }, 89 { USB_DEVICE(0x0471, 0x0310) }, 90 { USB_DEVICE(0x0471, 0x0311) }, /* Philips ToUcam PRO II */ 91 { USB_DEVICE(0x0471, 0x0312) }, 92 { USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */ 93 { USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC PC Camera */ 94 { USB_DEVICE(0x069A, 0x0001) }, /* Askey */ 95 { USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */ 96 { USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */ 97 { USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam Pro 4000 */ 98 { USB_DEVICE(0x046D, 0x08B3) }, /* Logitech QuickCam Zoom (old model) */ 99 { USB_DEVICE(0x046D, 0x08B4) }, /* Logitech QuickCam Zoom (new model) */ 100 { USB_DEVICE(0x046D, 0x08B5) }, /* Logitech QuickCam Orbit/Sphere */ 101 { USB_DEVICE(0x046D, 0x08B6) }, /* Cisco VT Camera */ 102 { USB_DEVICE(0x046D, 0x08B7) }, /* Logitech ViewPort AV 100 */ 103 { USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */ 104 { USB_DEVICE(0x055D, 0x9000) }, /* Samsung MPC-C10 */ 105 { USB_DEVICE(0x055D, 0x9001) }, /* Samsung MPC-C30 */ 106 { USB_DEVICE(0x055D, 0x9002) }, /* Samsung SNC-35E (Ver3.0) */ 107 { USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */ 108 { USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */ 109 { USB_DEVICE(0x04CC, 0x8116) }, /* Afina Eye */ 110 { USB_DEVICE(0x06BE, 0x8116) }, /* new Afina Eye */ 111 { USB_DEVICE(0x0d81, 0x1910) }, /* Visionite */ 112 { USB_DEVICE(0x0d81, 0x1900) }, 113 { } 114 }; 115 MODULE_DEVICE_TABLE(usb, pwc_device_table); 116 117 static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id); 118 static void usb_pwc_disconnect(struct usb_interface *intf); 119 static void pwc_isoc_cleanup(struct pwc_device *pdev); 120 121 static struct usb_driver pwc_driver = { 122 .name = "Philips webcam", /* name */ 123 .id_table = pwc_device_table, 124 .probe = usb_pwc_probe, /* probe() */ 125 .disconnect = usb_pwc_disconnect, /* disconnect() */ 126 }; 127 128 #define MAX_DEV_HINTS 20 129 #define MAX_ISOC_ERRORS 20 130 131 #ifdef CONFIG_USB_PWC_DEBUG 132 int pwc_trace = PWC_DEBUG_LEVEL; 133 #endif 134 static int power_save = -1; 135 static int leds[2] = { 100, 0 }; 136 137 /***/ 138 139 static const struct v4l2_file_operations pwc_fops = { 140 .owner = THIS_MODULE, 141 .open = v4l2_fh_open, 142 .release = vb2_fop_release, 143 .read = vb2_fop_read, 144 .poll = vb2_fop_poll, 145 .mmap = vb2_fop_mmap, 146 .unlocked_ioctl = video_ioctl2, 147 }; 148 static struct video_device pwc_template = { 149 .name = "Philips Webcam", /* Filled in later */ 150 .release = video_device_release_empty, 151 .fops = &pwc_fops, 152 .ioctl_ops = &pwc_ioctl_ops, 153 }; 154 155 /***************************************************************************/ 156 /* Private functions */ 157 158 static struct pwc_frame_buf *pwc_get_next_fill_buf(struct pwc_device *pdev) 159 { 160 unsigned long flags = 0; 161 struct pwc_frame_buf *buf = NULL; 162 163 spin_lock_irqsave(&pdev->queued_bufs_lock, flags); 164 if (list_empty(&pdev->queued_bufs)) 165 goto leave; 166 167 buf = list_entry(pdev->queued_bufs.next, struct pwc_frame_buf, list); 168 list_del(&buf->list); 169 leave: 170 spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags); 171 return buf; 172 } 173 174 static void pwc_snapshot_button(struct pwc_device *pdev, int down) 175 { 176 if (down) { 177 PWC_TRACE("Snapshot button pressed.\n"); 178 } else { 179 PWC_TRACE("Snapshot button released.\n"); 180 } 181 182 #ifdef CONFIG_USB_PWC_INPUT_EVDEV 183 if (pdev->button_dev) { 184 input_report_key(pdev->button_dev, KEY_CAMERA, down); 185 input_sync(pdev->button_dev); 186 } 187 #endif 188 } 189 190 static void pwc_frame_complete(struct pwc_device *pdev) 191 { 192 struct pwc_frame_buf *fbuf = pdev->fill_buf; 193 194 /* The ToUCam Fun CMOS sensor causes the firmware to send 2 or 3 bogus 195 frames on the USB wire after an exposure change. This conditition is 196 however detected in the cam and a bit is set in the header. 197 */ 198 if (pdev->type == 730) { 199 unsigned char *ptr = (unsigned char *)fbuf->data; 200 201 if (ptr[1] == 1 && ptr[0] & 0x10) { 202 PWC_TRACE("Hyundai CMOS sensor bug. Dropping frame.\n"); 203 pdev->drop_frames += 2; 204 } 205 if ((ptr[0] ^ pdev->vmirror) & 0x01) { 206 pwc_snapshot_button(pdev, ptr[0] & 0x01); 207 } 208 if ((ptr[0] ^ pdev->vmirror) & 0x02) { 209 if (ptr[0] & 0x02) 210 PWC_TRACE("Image is mirrored.\n"); 211 else 212 PWC_TRACE("Image is normal.\n"); 213 } 214 pdev->vmirror = ptr[0] & 0x03; 215 /* Sometimes the trailer of the 730 is still sent as a 4 byte packet 216 after a short frame; this condition is filtered out specifically. A 4 byte 217 frame doesn't make sense anyway. 218 So we get either this sequence: 219 drop_bit set -> 4 byte frame -> short frame -> good frame 220 Or this one: 221 drop_bit set -> short frame -> good frame 222 So we drop either 3 or 2 frames in all! 223 */ 224 if (fbuf->filled == 4) 225 pdev->drop_frames++; 226 } else if (pdev->type == 740 || pdev->type == 720) { 227 unsigned char *ptr = (unsigned char *)fbuf->data; 228 if ((ptr[0] ^ pdev->vmirror) & 0x01) { 229 pwc_snapshot_button(pdev, ptr[0] & 0x01); 230 } 231 pdev->vmirror = ptr[0] & 0x03; 232 } 233 234 /* In case we were instructed to drop the frame, do so silently. */ 235 if (pdev->drop_frames > 0) { 236 pdev->drop_frames--; 237 } else { 238 /* Check for underflow first */ 239 if (fbuf->filled < pdev->frame_total_size) { 240 PWC_DEBUG_FLOW("Frame buffer underflow (%d bytes);" 241 " discarded.\n", fbuf->filled); 242 } else { 243 fbuf->vb.field = V4L2_FIELD_NONE; 244 fbuf->vb.sequence = pdev->vframe_count; 245 vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); 246 pdev->fill_buf = NULL; 247 pdev->vsync = 0; 248 } 249 } /* !drop_frames */ 250 pdev->vframe_count++; 251 } 252 253 /* This gets called for the Isochronous pipe (video). This is done in 254 * interrupt time, so it has to be fast, not crash, and not stall. Neat. 255 */ 256 static void pwc_isoc_handler(struct urb *urb) 257 { 258 struct pwc_device *pdev = (struct pwc_device *)urb->context; 259 int i, fst, flen; 260 unsigned char *iso_buf = NULL; 261 262 if (urb->status == -ENOENT || urb->status == -ECONNRESET || 263 urb->status == -ESHUTDOWN) { 264 PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a"); 265 return; 266 } 267 268 if (pdev->fill_buf == NULL) 269 pdev->fill_buf = pwc_get_next_fill_buf(pdev); 270 271 if (urb->status != 0) { 272 const char *errmsg; 273 274 errmsg = "Unknown"; 275 switch(urb->status) { 276 case -ENOSR: errmsg = "Buffer error (overrun)"; break; 277 case -EPIPE: errmsg = "Stalled (device not responding)"; break; 278 case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; 279 case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; 280 case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; 281 case -ETIME: errmsg = "Device does not respond"; break; 282 } 283 PWC_ERROR("pwc_isoc_handler() called with status %d [%s].\n", 284 urb->status, errmsg); 285 /* Give up after a number of contiguous errors */ 286 if (++pdev->visoc_errors > MAX_ISOC_ERRORS) 287 { 288 PWC_ERROR("Too many ISOC errors, bailing out.\n"); 289 if (pdev->fill_buf) { 290 vb2_buffer_done(&pdev->fill_buf->vb.vb2_buf, 291 VB2_BUF_STATE_ERROR); 292 pdev->fill_buf = NULL; 293 } 294 } 295 pdev->vsync = 0; /* Drop the current frame */ 296 goto handler_end; 297 } 298 299 /* Reset ISOC error counter. We did get here, after all. */ 300 pdev->visoc_errors = 0; 301 302 /* vsync: 0 = don't copy data 303 1 = sync-hunt 304 2 = synched 305 */ 306 /* Compact data */ 307 for (i = 0; i < urb->number_of_packets; i++) { 308 fst = urb->iso_frame_desc[i].status; 309 flen = urb->iso_frame_desc[i].actual_length; 310 iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; 311 if (fst != 0) { 312 PWC_ERROR("Iso frame %d has error %d\n", i, fst); 313 continue; 314 } 315 if (flen > 0 && pdev->vsync) { 316 struct pwc_frame_buf *fbuf = pdev->fill_buf; 317 318 if (pdev->vsync == 1) { 319 v4l2_get_timestamp( 320 &fbuf->vb.timestamp); 321 pdev->vsync = 2; 322 } 323 324 if (flen + fbuf->filled > pdev->frame_total_size) { 325 PWC_ERROR("Frame overflow (%d > %d)\n", 326 flen + fbuf->filled, 327 pdev->frame_total_size); 328 pdev->vsync = 0; /* Let's wait for an EOF */ 329 } else { 330 memcpy(fbuf->data + fbuf->filled, iso_buf, 331 flen); 332 fbuf->filled += flen; 333 } 334 } 335 if (flen < pdev->vlast_packet_size) { 336 /* Shorter packet... end of frame */ 337 if (pdev->vsync == 2) 338 pwc_frame_complete(pdev); 339 if (pdev->fill_buf == NULL) 340 pdev->fill_buf = pwc_get_next_fill_buf(pdev); 341 if (pdev->fill_buf) { 342 pdev->fill_buf->filled = 0; 343 pdev->vsync = 1; 344 } 345 } 346 pdev->vlast_packet_size = flen; 347 } 348 349 handler_end: 350 i = usb_submit_urb(urb, GFP_ATOMIC); 351 if (i != 0) 352 PWC_ERROR("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i); 353 } 354 355 /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ 356 static int pwc_isoc_init(struct pwc_device *pdev) 357 { 358 struct usb_device *udev; 359 struct urb *urb; 360 int i, j, ret; 361 struct usb_interface *intf; 362 struct usb_host_interface *idesc = NULL; 363 int compression = 0; /* 0..3 = uncompressed..high */ 364 365 pdev->vsync = 0; 366 pdev->vlast_packet_size = 0; 367 pdev->fill_buf = NULL; 368 pdev->vframe_count = 0; 369 pdev->visoc_errors = 0; 370 udev = pdev->udev; 371 372 retry: 373 /* We first try with low compression and then retry with a higher 374 compression setting if there is not enough bandwidth. */ 375 ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt, 376 pdev->vframes, &compression, 1); 377 378 /* Get the current alternate interface, adjust packet size */ 379 intf = usb_ifnum_to_if(udev, 0); 380 if (intf) 381 idesc = usb_altnum_to_altsetting(intf, pdev->valternate); 382 if (!idesc) 383 return -EIO; 384 385 /* Search video endpoint */ 386 pdev->vmax_packet_size = -1; 387 for (i = 0; i < idesc->desc.bNumEndpoints; i++) { 388 if ((idesc->endpoint[i].desc.bEndpointAddress & 0xF) == pdev->vendpoint) { 389 pdev->vmax_packet_size = le16_to_cpu(idesc->endpoint[i].desc.wMaxPacketSize); 390 break; 391 } 392 } 393 394 if (pdev->vmax_packet_size < 0 || pdev->vmax_packet_size > ISO_MAX_FRAME_SIZE) { 395 PWC_ERROR("Failed to find packet size for video endpoint in current alternate setting.\n"); 396 return -ENFILE; /* Odd error, that should be noticeable */ 397 } 398 399 /* Set alternate interface */ 400 PWC_DEBUG_OPEN("Setting alternate interface %d\n", pdev->valternate); 401 ret = usb_set_interface(pdev->udev, 0, pdev->valternate); 402 if (ret == -ENOSPC && compression < 3) { 403 compression++; 404 goto retry; 405 } 406 if (ret < 0) 407 return ret; 408 409 /* Allocate and init Isochronuous urbs */ 410 for (i = 0; i < MAX_ISO_BUFS; i++) { 411 urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); 412 if (urb == NULL) { 413 PWC_ERROR("Failed to allocate urb %d\n", i); 414 pwc_isoc_cleanup(pdev); 415 return -ENOMEM; 416 } 417 pdev->urbs[i] = urb; 418 PWC_DEBUG_MEMORY("Allocated URB at 0x%p\n", urb); 419 420 urb->interval = 1; // devik 421 urb->dev = udev; 422 urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint); 423 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 424 urb->transfer_buffer = usb_alloc_coherent(udev, 425 ISO_BUFFER_SIZE, 426 GFP_KERNEL, 427 &urb->transfer_dma); 428 if (urb->transfer_buffer == NULL) { 429 PWC_ERROR("Failed to allocate urb buffer %d\n", i); 430 pwc_isoc_cleanup(pdev); 431 return -ENOMEM; 432 } 433 urb->transfer_buffer_length = ISO_BUFFER_SIZE; 434 urb->complete = pwc_isoc_handler; 435 urb->context = pdev; 436 urb->start_frame = 0; 437 urb->number_of_packets = ISO_FRAMES_PER_DESC; 438 for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { 439 urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; 440 urb->iso_frame_desc[j].length = pdev->vmax_packet_size; 441 } 442 } 443 444 /* link */ 445 for (i = 0; i < MAX_ISO_BUFS; i++) { 446 ret = usb_submit_urb(pdev->urbs[i], GFP_KERNEL); 447 if (ret == -ENOSPC && compression < 3) { 448 compression++; 449 pwc_isoc_cleanup(pdev); 450 goto retry; 451 } 452 if (ret) { 453 PWC_ERROR("isoc_init() submit_urb %d failed with error %d\n", i, ret); 454 pwc_isoc_cleanup(pdev); 455 return ret; 456 } 457 PWC_DEBUG_MEMORY("URB 0x%p submitted.\n", pdev->urbs[i]); 458 } 459 460 /* All is done... */ 461 PWC_DEBUG_OPEN("<< pwc_isoc_init()\n"); 462 return 0; 463 } 464 465 static void pwc_iso_stop(struct pwc_device *pdev) 466 { 467 int i; 468 469 /* Unlinking ISOC buffers one by one */ 470 for (i = 0; i < MAX_ISO_BUFS; i++) { 471 if (pdev->urbs[i]) { 472 PWC_DEBUG_MEMORY("Unlinking URB %p\n", pdev->urbs[i]); 473 usb_kill_urb(pdev->urbs[i]); 474 } 475 } 476 } 477 478 static void pwc_iso_free(struct pwc_device *pdev) 479 { 480 int i; 481 482 /* Freeing ISOC buffers one by one */ 483 for (i = 0; i < MAX_ISO_BUFS; i++) { 484 if (pdev->urbs[i]) { 485 PWC_DEBUG_MEMORY("Freeing URB\n"); 486 if (pdev->urbs[i]->transfer_buffer) { 487 usb_free_coherent(pdev->udev, 488 pdev->urbs[i]->transfer_buffer_length, 489 pdev->urbs[i]->transfer_buffer, 490 pdev->urbs[i]->transfer_dma); 491 } 492 usb_free_urb(pdev->urbs[i]); 493 pdev->urbs[i] = NULL; 494 } 495 } 496 } 497 498 /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ 499 static void pwc_isoc_cleanup(struct pwc_device *pdev) 500 { 501 PWC_DEBUG_OPEN(">> pwc_isoc_cleanup()\n"); 502 503 pwc_iso_stop(pdev); 504 pwc_iso_free(pdev); 505 usb_set_interface(pdev->udev, 0, 0); 506 507 PWC_DEBUG_OPEN("<< pwc_isoc_cleanup()\n"); 508 } 509 510 /* Must be called with vb_queue_lock hold */ 511 static void pwc_cleanup_queued_bufs(struct pwc_device *pdev, 512 enum vb2_buffer_state state) 513 { 514 unsigned long flags = 0; 515 516 spin_lock_irqsave(&pdev->queued_bufs_lock, flags); 517 while (!list_empty(&pdev->queued_bufs)) { 518 struct pwc_frame_buf *buf; 519 520 buf = list_entry(pdev->queued_bufs.next, struct pwc_frame_buf, 521 list); 522 list_del(&buf->list); 523 vb2_buffer_done(&buf->vb.vb2_buf, state); 524 } 525 spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags); 526 } 527 528 #ifdef CONFIG_USB_PWC_DEBUG 529 static const char *pwc_sensor_type_to_string(unsigned int sensor_type) 530 { 531 switch(sensor_type) { 532 case 0x00: 533 return "Hyundai CMOS sensor"; 534 case 0x20: 535 return "Sony CCD sensor + TDA8787"; 536 case 0x2E: 537 return "Sony CCD sensor + Exas 98L59"; 538 case 0x2F: 539 return "Sony CCD sensor + ADI 9804"; 540 case 0x30: 541 return "Sharp CCD sensor + TDA8787"; 542 case 0x3E: 543 return "Sharp CCD sensor + Exas 98L59"; 544 case 0x3F: 545 return "Sharp CCD sensor + ADI 9804"; 546 case 0x40: 547 return "UPA 1021 sensor"; 548 case 0x100: 549 return "VGA sensor"; 550 case 0x101: 551 return "PAL MR sensor"; 552 default: 553 return "unknown type of sensor"; 554 } 555 } 556 #endif 557 558 /***************************************************************************/ 559 /* Video4Linux functions */ 560 561 static void pwc_video_release(struct v4l2_device *v) 562 { 563 struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev); 564 565 v4l2_ctrl_handler_free(&pdev->ctrl_handler); 566 v4l2_device_unregister(&pdev->v4l2_dev); 567 kfree(pdev->ctrl_buf); 568 kfree(pdev); 569 } 570 571 /***************************************************************************/ 572 /* Videobuf2 operations */ 573 574 static int queue_setup(struct vb2_queue *vq, const void *parg, 575 unsigned int *nbuffers, unsigned int *nplanes, 576 unsigned int sizes[], void *alloc_ctxs[]) 577 { 578 struct pwc_device *pdev = vb2_get_drv_priv(vq); 579 int size; 580 581 if (*nbuffers < MIN_FRAMES) 582 *nbuffers = MIN_FRAMES; 583 else if (*nbuffers > MAX_FRAMES) 584 *nbuffers = MAX_FRAMES; 585 586 *nplanes = 1; 587 588 size = pwc_get_size(pdev, MAX_WIDTH, MAX_HEIGHT); 589 sizes[0] = PAGE_ALIGN(pwc_image_sizes[size][0] * 590 pwc_image_sizes[size][1] * 3 / 2); 591 592 return 0; 593 } 594 595 static int buffer_init(struct vb2_buffer *vb) 596 { 597 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 598 struct pwc_frame_buf *buf = 599 container_of(vbuf, struct pwc_frame_buf, vb); 600 601 /* need vmalloc since frame buffer > 128K */ 602 buf->data = vzalloc(PWC_FRAME_SIZE); 603 if (buf->data == NULL) 604 return -ENOMEM; 605 606 return 0; 607 } 608 609 static int buffer_prepare(struct vb2_buffer *vb) 610 { 611 struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue); 612 613 /* Don't allow queing new buffers after device disconnection */ 614 if (!pdev->udev) 615 return -ENODEV; 616 617 return 0; 618 } 619 620 static void buffer_finish(struct vb2_buffer *vb) 621 { 622 struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue); 623 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 624 struct pwc_frame_buf *buf = 625 container_of(vbuf, struct pwc_frame_buf, vb); 626 627 if (vb->state == VB2_BUF_STATE_DONE) { 628 /* 629 * Application has called dqbuf and is getting back a buffer 630 * we've filled, take the pwc data we've stored in buf->data 631 * and decompress it into a usable format, storing the result 632 * in the vb2_buffer. 633 */ 634 pwc_decompress(pdev, buf); 635 } 636 } 637 638 static void buffer_cleanup(struct vb2_buffer *vb) 639 { 640 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 641 struct pwc_frame_buf *buf = 642 container_of(vbuf, struct pwc_frame_buf, vb); 643 644 vfree(buf->data); 645 } 646 647 static void buffer_queue(struct vb2_buffer *vb) 648 { 649 struct pwc_device *pdev = vb2_get_drv_priv(vb->vb2_queue); 650 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 651 struct pwc_frame_buf *buf = 652 container_of(vbuf, struct pwc_frame_buf, vb); 653 unsigned long flags = 0; 654 655 /* Check the device has not disconnected between prep and queuing */ 656 if (!pdev->udev) { 657 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); 658 return; 659 } 660 661 spin_lock_irqsave(&pdev->queued_bufs_lock, flags); 662 list_add_tail(&buf->list, &pdev->queued_bufs); 663 spin_unlock_irqrestore(&pdev->queued_bufs_lock, flags); 664 } 665 666 static int start_streaming(struct vb2_queue *vq, unsigned int count) 667 { 668 struct pwc_device *pdev = vb2_get_drv_priv(vq); 669 int r; 670 671 if (!pdev->udev) 672 return -ENODEV; 673 674 if (mutex_lock_interruptible(&pdev->v4l2_lock)) 675 return -ERESTARTSYS; 676 /* Turn on camera and set LEDS on */ 677 pwc_camera_power(pdev, 1); 678 pwc_set_leds(pdev, leds[0], leds[1]); 679 680 r = pwc_isoc_init(pdev); 681 if (r) { 682 /* If we failed turn camera and LEDS back off */ 683 pwc_set_leds(pdev, 0, 0); 684 pwc_camera_power(pdev, 0); 685 /* And cleanup any queued bufs!! */ 686 pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_QUEUED); 687 } 688 mutex_unlock(&pdev->v4l2_lock); 689 690 return r; 691 } 692 693 static void stop_streaming(struct vb2_queue *vq) 694 { 695 struct pwc_device *pdev = vb2_get_drv_priv(vq); 696 697 mutex_lock(&pdev->v4l2_lock); 698 if (pdev->udev) { 699 pwc_set_leds(pdev, 0, 0); 700 pwc_camera_power(pdev, 0); 701 pwc_isoc_cleanup(pdev); 702 } 703 704 pwc_cleanup_queued_bufs(pdev, VB2_BUF_STATE_ERROR); 705 if (pdev->fill_buf) 706 vb2_buffer_done(&pdev->fill_buf->vb.vb2_buf, 707 VB2_BUF_STATE_ERROR); 708 mutex_unlock(&pdev->v4l2_lock); 709 } 710 711 static struct vb2_ops pwc_vb_queue_ops = { 712 .queue_setup = queue_setup, 713 .buf_init = buffer_init, 714 .buf_prepare = buffer_prepare, 715 .buf_finish = buffer_finish, 716 .buf_cleanup = buffer_cleanup, 717 .buf_queue = buffer_queue, 718 .start_streaming = start_streaming, 719 .stop_streaming = stop_streaming, 720 .wait_prepare = vb2_ops_wait_prepare, 721 .wait_finish = vb2_ops_wait_finish, 722 }; 723 724 /***************************************************************************/ 725 /* USB functions */ 726 727 /* This function gets called when a new device is plugged in or the usb core 728 * is loaded. 729 */ 730 731 static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id) 732 { 733 struct usb_device *udev = interface_to_usbdev(intf); 734 struct pwc_device *pdev = NULL; 735 int vendor_id, product_id, type_id; 736 int rc; 737 int features = 0; 738 int compression = 0; 739 int my_power_save = power_save; 740 char serial_number[30], *name; 741 742 vendor_id = le16_to_cpu(udev->descriptor.idVendor); 743 product_id = le16_to_cpu(udev->descriptor.idProduct); 744 745 /* Check if we can handle this device */ 746 PWC_DEBUG_PROBE("probe() called [%04X %04X], if %d\n", 747 vendor_id, product_id, 748 intf->altsetting->desc.bInterfaceNumber); 749 750 /* the interfaces are probed one by one. We are only interested in the 751 video interface (0) now. 752 Interface 1 is the Audio Control, and interface 2 Audio itself. 753 */ 754 if (intf->altsetting->desc.bInterfaceNumber > 0) 755 return -ENODEV; 756 757 if (vendor_id == 0x0471) { 758 switch (product_id) { 759 case 0x0302: 760 PWC_INFO("Philips PCA645VC USB webcam detected.\n"); 761 name = "Philips 645 webcam"; 762 type_id = 645; 763 break; 764 case 0x0303: 765 PWC_INFO("Philips PCA646VC USB webcam detected.\n"); 766 name = "Philips 646 webcam"; 767 type_id = 646; 768 break; 769 case 0x0304: 770 PWC_INFO("Askey VC010 type 2 USB webcam detected.\n"); 771 name = "Askey VC010 webcam"; 772 type_id = 646; 773 break; 774 case 0x0307: 775 PWC_INFO("Philips PCVC675K (Vesta) USB webcam detected.\n"); 776 name = "Philips 675 webcam"; 777 type_id = 675; 778 break; 779 case 0x0308: 780 PWC_INFO("Philips PCVC680K (Vesta Pro) USB webcam detected.\n"); 781 name = "Philips 680 webcam"; 782 type_id = 680; 783 break; 784 case 0x030C: 785 PWC_INFO("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n"); 786 name = "Philips 690 webcam"; 787 type_id = 690; 788 break; 789 case 0x0310: 790 PWC_INFO("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n"); 791 name = "Philips 730 webcam"; 792 type_id = 730; 793 break; 794 case 0x0311: 795 PWC_INFO("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n"); 796 name = "Philips 740 webcam"; 797 type_id = 740; 798 break; 799 case 0x0312: 800 PWC_INFO("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n"); 801 name = "Philips 750 webcam"; 802 type_id = 750; 803 break; 804 case 0x0313: 805 PWC_INFO("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n"); 806 name = "Philips 720K/40 webcam"; 807 type_id = 720; 808 break; 809 case 0x0329: 810 PWC_INFO("Philips SPC 900NC USB webcam detected.\n"); 811 name = "Philips SPC 900NC webcam"; 812 type_id = 740; 813 break; 814 default: 815 return -ENODEV; 816 break; 817 } 818 } 819 else if (vendor_id == 0x069A) { 820 switch(product_id) { 821 case 0x0001: 822 PWC_INFO("Askey VC010 type 1 USB webcam detected.\n"); 823 name = "Askey VC010 webcam"; 824 type_id = 645; 825 break; 826 default: 827 return -ENODEV; 828 break; 829 } 830 } 831 else if (vendor_id == 0x046d) { 832 switch(product_id) { 833 case 0x08b0: 834 PWC_INFO("Logitech QuickCam Pro 3000 USB webcam detected.\n"); 835 name = "Logitech QuickCam Pro 3000"; 836 type_id = 740; /* CCD sensor */ 837 break; 838 case 0x08b1: 839 PWC_INFO("Logitech QuickCam Notebook Pro USB webcam detected.\n"); 840 name = "Logitech QuickCam Notebook Pro"; 841 type_id = 740; /* CCD sensor */ 842 break; 843 case 0x08b2: 844 PWC_INFO("Logitech QuickCam 4000 Pro USB webcam detected.\n"); 845 name = "Logitech QuickCam Pro 4000"; 846 type_id = 740; /* CCD sensor */ 847 if (my_power_save == -1) 848 my_power_save = 1; 849 break; 850 case 0x08b3: 851 PWC_INFO("Logitech QuickCam Zoom USB webcam detected.\n"); 852 name = "Logitech QuickCam Zoom"; 853 type_id = 740; /* CCD sensor */ 854 break; 855 case 0x08B4: 856 PWC_INFO("Logitech QuickCam Zoom (new model) USB webcam detected.\n"); 857 name = "Logitech QuickCam Zoom"; 858 type_id = 740; /* CCD sensor */ 859 if (my_power_save == -1) 860 my_power_save = 1; 861 break; 862 case 0x08b5: 863 PWC_INFO("Logitech QuickCam Orbit/Sphere USB webcam detected.\n"); 864 name = "Logitech QuickCam Orbit"; 865 type_id = 740; /* CCD sensor */ 866 if (my_power_save == -1) 867 my_power_save = 1; 868 features |= FEATURE_MOTOR_PANTILT; 869 break; 870 case 0x08b6: 871 PWC_INFO("Logitech/Cisco VT Camera webcam detected.\n"); 872 name = "Cisco VT Camera"; 873 type_id = 740; /* CCD sensor */ 874 break; 875 case 0x08b7: 876 PWC_INFO("Logitech ViewPort AV 100 webcam detected.\n"); 877 name = "Logitech ViewPort AV 100"; 878 type_id = 740; /* CCD sensor */ 879 break; 880 case 0x08b8: /* Where this released? */ 881 PWC_INFO("Logitech QuickCam detected (reserved ID).\n"); 882 name = "Logitech QuickCam (res.)"; 883 type_id = 730; /* Assuming CMOS */ 884 break; 885 default: 886 return -ENODEV; 887 break; 888 } 889 } 890 else if (vendor_id == 0x055d) { 891 /* I don't know the difference between the C10 and the C30; 892 I suppose the difference is the sensor, but both cameras 893 work equally well with a type_id of 675 894 */ 895 switch(product_id) { 896 case 0x9000: 897 PWC_INFO("Samsung MPC-C10 USB webcam detected.\n"); 898 name = "Samsung MPC-C10"; 899 type_id = 675; 900 break; 901 case 0x9001: 902 PWC_INFO("Samsung MPC-C30 USB webcam detected.\n"); 903 name = "Samsung MPC-C30"; 904 type_id = 675; 905 break; 906 case 0x9002: 907 PWC_INFO("Samsung SNC-35E (v3.0) USB webcam detected.\n"); 908 name = "Samsung MPC-C30"; 909 type_id = 740; 910 break; 911 default: 912 return -ENODEV; 913 break; 914 } 915 } 916 else if (vendor_id == 0x041e) { 917 switch(product_id) { 918 case 0x400c: 919 PWC_INFO("Creative Labs Webcam 5 detected.\n"); 920 name = "Creative Labs Webcam 5"; 921 type_id = 730; 922 if (my_power_save == -1) 923 my_power_save = 1; 924 break; 925 case 0x4011: 926 PWC_INFO("Creative Labs Webcam Pro Ex detected.\n"); 927 name = "Creative Labs Webcam Pro Ex"; 928 type_id = 740; 929 break; 930 default: 931 return -ENODEV; 932 break; 933 } 934 } 935 else if (vendor_id == 0x04cc) { 936 switch(product_id) { 937 case 0x8116: 938 PWC_INFO("Sotec Afina Eye USB webcam detected.\n"); 939 name = "Sotec Afina Eye"; 940 type_id = 730; 941 break; 942 default: 943 return -ENODEV; 944 break; 945 } 946 } 947 else if (vendor_id == 0x06be) { 948 switch(product_id) { 949 case 0x8116: 950 /* This is essentially the same cam as the Sotec Afina Eye */ 951 PWC_INFO("AME Co. Afina Eye USB webcam detected.\n"); 952 name = "AME Co. Afina Eye"; 953 type_id = 750; 954 break; 955 default: 956 return -ENODEV; 957 break; 958 } 959 960 } 961 else if (vendor_id == 0x0d81) { 962 switch(product_id) { 963 case 0x1900: 964 PWC_INFO("Visionite VCS-UC300 USB webcam detected.\n"); 965 name = "Visionite VCS-UC300"; 966 type_id = 740; /* CCD sensor */ 967 break; 968 case 0x1910: 969 PWC_INFO("Visionite VCS-UM100 USB webcam detected.\n"); 970 name = "Visionite VCS-UM100"; 971 type_id = 730; /* CMOS sensor */ 972 break; 973 default: 974 return -ENODEV; 975 break; 976 } 977 } 978 else 979 return -ENODEV; /* Not any of the know types; but the list keeps growing. */ 980 981 if (my_power_save == -1) 982 my_power_save = 0; 983 984 memset(serial_number, 0, 30); 985 usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29); 986 PWC_DEBUG_PROBE("Device serial number is %s\n", serial_number); 987 988 if (udev->descriptor.bNumConfigurations > 1) 989 PWC_WARNING("Warning: more than 1 configuration available.\n"); 990 991 /* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */ 992 pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL); 993 if (pdev == NULL) { 994 PWC_ERROR("Oops, could not allocate memory for pwc_device.\n"); 995 return -ENOMEM; 996 } 997 pdev->type = type_id; 998 pdev->features = features; 999 pwc_construct(pdev); /* set min/max sizes correct */ 1000 1001 mutex_init(&pdev->v4l2_lock); 1002 mutex_init(&pdev->vb_queue_lock); 1003 spin_lock_init(&pdev->queued_bufs_lock); 1004 INIT_LIST_HEAD(&pdev->queued_bufs); 1005 1006 pdev->udev = udev; 1007 pdev->power_save = my_power_save; 1008 1009 /* Init videobuf2 queue structure */ 1010 pdev->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1011 pdev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1012 pdev->vb_queue.drv_priv = pdev; 1013 pdev->vb_queue.buf_struct_size = sizeof(struct pwc_frame_buf); 1014 pdev->vb_queue.ops = &pwc_vb_queue_ops; 1015 pdev->vb_queue.mem_ops = &vb2_vmalloc_memops; 1016 pdev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1017 rc = vb2_queue_init(&pdev->vb_queue); 1018 if (rc < 0) { 1019 PWC_ERROR("Oops, could not initialize vb2 queue.\n"); 1020 goto err_free_mem; 1021 } 1022 1023 /* Init video_device structure */ 1024 pdev->vdev = pwc_template; 1025 strcpy(pdev->vdev.name, name); 1026 pdev->vdev.queue = &pdev->vb_queue; 1027 pdev->vdev.queue->lock = &pdev->vb_queue_lock; 1028 video_set_drvdata(&pdev->vdev, pdev); 1029 1030 pdev->release = le16_to_cpu(udev->descriptor.bcdDevice); 1031 PWC_DEBUG_PROBE("Release: %04x\n", pdev->release); 1032 1033 /* Allocate USB command buffers */ 1034 pdev->ctrl_buf = kmalloc(sizeof(pdev->cmd_buf), GFP_KERNEL); 1035 if (!pdev->ctrl_buf) { 1036 PWC_ERROR("Oops, could not allocate memory for pwc_device.\n"); 1037 rc = -ENOMEM; 1038 goto err_free_mem; 1039 } 1040 1041 #ifdef CONFIG_USB_PWC_DEBUG 1042 /* Query sensor type */ 1043 if (pwc_get_cmos_sensor(pdev, &rc) >= 0) { 1044 PWC_DEBUG_OPEN("This %s camera is equipped with a %s (%d).\n", 1045 pdev->vdev.name, 1046 pwc_sensor_type_to_string(rc), rc); 1047 } 1048 #endif 1049 1050 /* Set the leds off */ 1051 pwc_set_leds(pdev, 0, 0); 1052 1053 /* Setup initial videomode */ 1054 rc = pwc_set_video_mode(pdev, MAX_WIDTH, MAX_HEIGHT, 1055 V4L2_PIX_FMT_YUV420, 30, &compression, 1); 1056 if (rc) 1057 goto err_free_mem; 1058 1059 /* Register controls (and read default values from camera */ 1060 rc = pwc_init_controls(pdev); 1061 if (rc) { 1062 PWC_ERROR("Failed to register v4l2 controls (%d).\n", rc); 1063 goto err_free_mem; 1064 } 1065 1066 /* And powerdown the camera until streaming starts */ 1067 pwc_camera_power(pdev, 0); 1068 1069 /* Register the v4l2_device structure */ 1070 pdev->v4l2_dev.release = pwc_video_release; 1071 rc = v4l2_device_register(&intf->dev, &pdev->v4l2_dev); 1072 if (rc) { 1073 PWC_ERROR("Failed to register v4l2-device (%d).\n", rc); 1074 goto err_free_controls; 1075 } 1076 1077 pdev->v4l2_dev.ctrl_handler = &pdev->ctrl_handler; 1078 pdev->vdev.v4l2_dev = &pdev->v4l2_dev; 1079 pdev->vdev.lock = &pdev->v4l2_lock; 1080 1081 rc = video_register_device(&pdev->vdev, VFL_TYPE_GRABBER, -1); 1082 if (rc < 0) { 1083 PWC_ERROR("Failed to register as video device (%d).\n", rc); 1084 goto err_unregister_v4l2_dev; 1085 } 1086 PWC_INFO("Registered as %s.\n", video_device_node_name(&pdev->vdev)); 1087 1088 #ifdef CONFIG_USB_PWC_INPUT_EVDEV 1089 /* register webcam snapshot button input device */ 1090 pdev->button_dev = input_allocate_device(); 1091 if (!pdev->button_dev) { 1092 rc = -ENOMEM; 1093 goto err_video_unreg; 1094 } 1095 1096 usb_make_path(udev, pdev->button_phys, sizeof(pdev->button_phys)); 1097 strlcat(pdev->button_phys, "/input0", sizeof(pdev->button_phys)); 1098 1099 pdev->button_dev->name = "PWC snapshot button"; 1100 pdev->button_dev->phys = pdev->button_phys; 1101 usb_to_input_id(pdev->udev, &pdev->button_dev->id); 1102 pdev->button_dev->dev.parent = &pdev->udev->dev; 1103 pdev->button_dev->evbit[0] = BIT_MASK(EV_KEY); 1104 pdev->button_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA); 1105 1106 rc = input_register_device(pdev->button_dev); 1107 if (rc) { 1108 input_free_device(pdev->button_dev); 1109 pdev->button_dev = NULL; 1110 goto err_video_unreg; 1111 } 1112 #endif 1113 1114 return 0; 1115 1116 err_video_unreg: 1117 video_unregister_device(&pdev->vdev); 1118 err_unregister_v4l2_dev: 1119 v4l2_device_unregister(&pdev->v4l2_dev); 1120 err_free_controls: 1121 v4l2_ctrl_handler_free(&pdev->ctrl_handler); 1122 err_free_mem: 1123 kfree(pdev->ctrl_buf); 1124 kfree(pdev); 1125 return rc; 1126 } 1127 1128 /* The user yanked out the cable... */ 1129 static void usb_pwc_disconnect(struct usb_interface *intf) 1130 { 1131 struct v4l2_device *v = usb_get_intfdata(intf); 1132 struct pwc_device *pdev = container_of(v, struct pwc_device, v4l2_dev); 1133 1134 mutex_lock(&pdev->vb_queue_lock); 1135 mutex_lock(&pdev->v4l2_lock); 1136 /* No need to keep the urbs around after disconnection */ 1137 if (pdev->vb_queue.streaming) 1138 pwc_isoc_cleanup(pdev); 1139 pdev->udev = NULL; 1140 1141 v4l2_device_disconnect(&pdev->v4l2_dev); 1142 video_unregister_device(&pdev->vdev); 1143 mutex_unlock(&pdev->v4l2_lock); 1144 mutex_unlock(&pdev->vb_queue_lock); 1145 1146 #ifdef CONFIG_USB_PWC_INPUT_EVDEV 1147 if (pdev->button_dev) 1148 input_unregister_device(pdev->button_dev); 1149 #endif 1150 1151 v4l2_device_put(&pdev->v4l2_dev); 1152 } 1153 1154 1155 /* 1156 * Initialization code & module stuff 1157 */ 1158 1159 static unsigned int leds_nargs; 1160 1161 #ifdef CONFIG_USB_PWC_DEBUG 1162 module_param_named(trace, pwc_trace, int, 0644); 1163 #endif 1164 module_param(power_save, int, 0644); 1165 module_param_array(leds, int, &leds_nargs, 0444); 1166 1167 #ifdef CONFIG_USB_PWC_DEBUG 1168 MODULE_PARM_DESC(trace, "For debugging purposes"); 1169 #endif 1170 MODULE_PARM_DESC(power_save, "Turn power saving for new cameras on or off"); 1171 MODULE_PARM_DESC(leds, "LED on,off time in milliseconds"); 1172 1173 MODULE_DESCRIPTION("Philips & OEM USB webcam driver"); 1174 MODULE_AUTHOR("Luc Saillard <luc@saillard.org>"); 1175 MODULE_LICENSE("GPL"); 1176 MODULE_ALIAS("pwcx"); 1177 MODULE_VERSION( PWC_VERSION ); 1178 1179 module_usb_driver(pwc_driver); 1180