1/* 2 * STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net) 3 * 4 * Thanks to STMicroelectronics for information on the usb commands, and 5 * to Steve Miller at STM for his help and encouragement while I was 6 * writing this driver. 7 * 8 * This driver is based heavily on the 9 * Endpoints (formerly known as AOX) se401 USB Camera Driver 10 * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org) 11 * 12 * Still somewhat based on the Linux ov511 driver. 13 * 14 * This program is free software; you can redistribute it and/or modify it 15 * under the terms of the GNU General Public License as published by the 16 * Free Software Foundation; either version 2 of the License, or (at your 17 * option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, but 20 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 21 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 22 * for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software Foundation, 26 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 * 28 * History: 29 * ver 0.1 October, 2001. Initial attempt. 30 * 31 * ver 0.2 November, 2001. Fixed asbility to resize, added brightness 32 * function, made more stable (?) 33 * 34 * ver 0.21 Nov, 2001. Added gamma correction and white balance, 35 * due to Alexander Schwartz. Still trying to 36 * improve stablility. Moved stuff into stv680.h 37 * 38 * ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet, 39 * mike@easysw.com) from GIMP, also used in pencam. 40 * Simple, fast, good integer math routine. 41 * 42 * ver 0.23 Dec, 2001 (gkh) 43 * Took out sharpen function, ran code through 44 * Lindent, and did other minor tweaks to get 45 * things to work properly with 2.5.1 46 * 47 * ver 0.24 Jan, 2002 (kjs) 48 * Fixed the problem with webcam crashing after 49 * two pictures. Changed the way pic is halved to 50 * improve quality. Got rid of green line around 51 * frame. Fix brightness reset when changing size 52 * bug. Adjusted gamma filters slightly. 53 * 54 * ver 0.25 Jan, 2002 (kjs) 55 * Fixed a bug in which the driver sometimes attempted 56 * to set to a non-supported size. This allowed 57 * gnomemeeting to work. 58 * Fixed proc entry removal bug. 59 */ 60 61#include <linux/config.h> 62#include <linux/module.h> 63#include <linux/version.h> 64#include <linux/init.h> 65#include <linux/fs.h> 66#include <linux/vmalloc.h> 67#include <linux/slab.h> 68#include <linux/proc_fs.h> 69#include <linux/pagemap.h> 70#include <linux/wrapper.h> 71#include <linux/smp_lock.h> 72#include <linux/sched.h> 73#include <linux/signal.h> 74#include <linux/errno.h> 75#include <linux/videodev.h> 76#include <linux/usb.h> 77 78#include "stv680.h" 79 80static int video_nr = -1; 81static int swapRGB = 0; /* default for auto sleect */ 82static int swapRGB_on = 0; /* default to allow auto select; -1=swap never, +1= swap always */ 83 84static unsigned int debug = 0; 85 86#define PDEBUG(level, fmt, args...) \ 87 do { \ 88 if (debug >= level) \ 89 info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args); \ 90 } while (0) 91 92 93/* 94 * Version Information 95 */ 96#define DRIVER_VERSION "v0.25" 97#define DRIVER_AUTHOR "Kevin Sisson <kjsisson@bellsouth.net>" 98#define DRIVER_DESC "STV0680 USB Camera Driver" 99 100MODULE_AUTHOR (DRIVER_AUTHOR); 101MODULE_DESCRIPTION (DRIVER_DESC); 102MODULE_LICENSE ("GPL"); 103MODULE_PARM (debug, "i"); 104MODULE_PARM_DESC (debug, "Debug enabled or not"); 105MODULE_PARM (swapRGB_on, "i"); 106MODULE_PARM_DESC (swapRGB_on, "Red/blue swap: 1=always, 0=auto, -1=never"); 107MODULE_PARM (video_nr, "i"); 108EXPORT_NO_SYMBOLS; 109 110/******************************************************************** 111 * 112 * Memory management 113 * 114 ********************************************************************/ 115 116/* Here we want the physical address of the memory. 117 * This is used when initializing the contents of the area. 118 */ 119static inline unsigned long kvirt_to_pa (unsigned long adr) 120{ 121 unsigned long kva, ret; 122 123 kva = (unsigned long) page_address(vmalloc_to_page((void *)adr)); 124 kva |= adr & (PAGE_SIZE-1); /* restore the offset */ 125 ret = __pa(kva); 126 return ret; 127} 128 129static void *rvmalloc (unsigned long size) 130{ 131 void *mem; 132 unsigned long adr; 133 134 size = PAGE_ALIGN(size); 135 mem = vmalloc_32 (size); 136 if (!mem) 137 return NULL; 138 139 memset (mem, 0, size); /* Clear the ram out, no junk to the user */ 140 adr = (unsigned long) mem; 141 while (size > 0) { 142 mem_map_reserve(vmalloc_to_page((void *)adr)); 143 adr += PAGE_SIZE; 144 size -= PAGE_SIZE; 145 } 146 return mem; 147} 148 149static void rvfree (void *mem, unsigned long size) 150{ 151 unsigned long adr; 152 153 if (!mem) 154 return; 155 156 adr = (unsigned long) mem; 157 while ((long) size > 0) { 158 mem_map_unreserve(vmalloc_to_page((void *)adr)); 159 adr += PAGE_SIZE; 160 size -= PAGE_SIZE; 161 } 162 vfree (mem); 163} 164 165 166/********************************************************************* 167 * pencam read/write functions 168 ********************************************************************/ 169 170static int stv_sndctrl (int set, struct usb_stv *stv680, unsigned short req, unsigned short value, unsigned char *buffer, int size) 171{ 172 int ret = -1; 173 174 switch (set) { 175 case 0: /* 0xc1 */ 176 ret = usb_control_msg (stv680->udev, 177 usb_rcvctrlpipe (stv680->udev, 0), 178 req, 179 (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT), 180 value, 0, buffer, size, PENCAM_TIMEOUT); 181 break; 182 183 case 1: /* 0x41 */ 184 ret = usb_control_msg (stv680->udev, 185 usb_sndctrlpipe (stv680->udev, 0), 186 req, 187 (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT), 188 value, 0, buffer, size, PENCAM_TIMEOUT); 189 break; 190 191 case 2: /* 0x80 */ 192 ret = usb_control_msg (stv680->udev, 193 usb_rcvctrlpipe (stv680->udev, 0), 194 req, 195 (USB_DIR_IN | USB_RECIP_DEVICE), 196 value, 0, buffer, size, PENCAM_TIMEOUT); 197 break; 198 199 case 3: /* 0x40 */ 200 ret = usb_control_msg (stv680->udev, 201 usb_sndctrlpipe (stv680->udev, 0), 202 req, 203 (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE), 204 value, 0, buffer, size, PENCAM_TIMEOUT); 205 break; 206 207 } 208 if ((ret < 0) && (req != 0x0a)) { 209 PDEBUG (1, "STV(e): usb_control_msg error %i, request = 0x%x, error = %i", set, req, ret); 210 } 211 return ret; 212} 213 214static int stv_set_config (struct usb_stv *dev, int configuration, int interface, int alternate) 215{ 216 217 if (usb_set_configuration (dev->udev, configuration) < 0) { 218 PDEBUG (1, "STV(e): FAILED to set configuration %i", configuration); 219 return -1; 220 } 221 if (usb_set_interface (dev->udev, interface, alternate) < 0) { 222 PDEBUG (1, "STV(e): FAILED to set alternate interface %i", alternate); 223 return -1; 224 } 225 return 0; 226} 227 228static int stv_stop_video (struct usb_stv *dev) 229{ 230 int i; 231 unsigned char *buf; 232 233 buf = kmalloc (40, GFP_KERNEL); 234 if (buf == NULL) { 235 PDEBUG (0, "STV(e): Out of (small buf) memory"); 236 return -1; 237 } 238 239 /* this is a high priority command; it stops all lower order commands */ 240 if ((i = stv_sndctrl (1, dev, 0x04, 0x0000, buf, 0x0)) < 0) { 241 i = stv_sndctrl (0, dev, 0x80, 0, buf, 0x02); /* Get Last Error; 2 = busy */ 242 PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buf[0], buf[1]); 243 } else { 244 PDEBUG (1, "STV(i): Camera reset to idle mode."); 245 } 246 247 if ((i = stv_set_config (dev, 1, 0, 0)) < 0) 248 PDEBUG (1, "STV(e): Reset config during exit failed"); 249 250 /* get current mode */ 251 buf[0] = 0xf0; 252 if ((i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08)) != 0x08) /* get mode */ 253 PDEBUG (0, "STV(e): Stop_video: problem setting original mode"); 254 if (dev->origMode != buf[0]) { 255 memset (buf, 0, 8); 256 buf[0] = (unsigned char) dev->origMode; 257 if ((i = stv_sndctrl (3, dev, 0x07, 0x0100, buf, 0x08)) != 0x08) { 258 PDEBUG (0, "STV(e): Stop_video: Set_Camera_Mode failed"); 259 i = -1; 260 } 261 buf[0] = 0xf0; 262 i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08); 263 if ((i != 0x08) || (buf[0] != dev->origMode)) { 264 PDEBUG (0, "STV(e): camera NOT set to original resolution."); 265 i = -1; 266 } else 267 PDEBUG (0, "STV(i): Camera set to original resolution"); 268 } 269 /* origMode */ 270 kfree (buf); 271 return i; 272} 273 274static int stv_set_video_mode (struct usb_stv *dev) 275{ 276 int i, stop_video = 1; 277 unsigned char *buf; 278 279 buf = kmalloc (40, GFP_KERNEL); 280 if (buf == NULL) { 281 PDEBUG (0, "STV(e): Out of (small buf) memory"); 282 return -1; 283 } 284 285 if ((i = stv_set_config (dev, 1, 0, 0)) < 0) { 286 kfree (buf); 287 return i; 288 } 289 290 i = stv_sndctrl (2, dev, 0x06, 0x0100, buf, 0x12); 291 if (!(i > 0) && (buf[8] == 0x53) && (buf[9] == 0x05)) { 292 PDEBUG (1, "STV(e): Could not get descriptor 0100."); 293 goto error; 294 } 295 296 /* set alternate interface 1 */ 297 if ((i = stv_set_config (dev, 1, 0, 1)) < 0) 298 goto error; 299 300 if ((i = stv_sndctrl (0, dev, 0x85, 0, buf, 0x10)) != 0x10) 301 goto error; 302 PDEBUG (1, "STV(i): Setting video mode."); 303 /* Switch to Video mode: 0x0100 = VGA (640x480), 0x0000 = CIF (352x288) 0x0300 = QVGA (320x240) */ 304 if ((i = stv_sndctrl (1, dev, 0x09, dev->VideoMode, buf, 0x0)) < 0) { 305 stop_video = 0; 306 goto error; 307 } 308 goto exit; 309 310error: 311 kfree (buf); 312 if (stop_video == 1) 313 stv_stop_video (dev); 314 return -1; 315 316exit: 317 kfree (buf); 318 return 0; 319} 320 321static int stv_init (struct usb_stv *stv680) 322{ 323 int i = 0; 324 unsigned char *buffer; 325 unsigned long int bufsize; 326 327 buffer = kmalloc (40, GFP_KERNEL); 328 if (buffer == NULL) { 329 PDEBUG (0, "STV(e): Out of (small buf) memory"); 330 return -1; 331 } 332 memset (buffer, 0, 40); 333 udelay (100); 334 335 /* set config 1, interface 0, alternate 0 */ 336 if ((i = stv_set_config (stv680, 1, 0, 0)) < 0) { 337 kfree (buffer); 338 PDEBUG (0, "STV(e): set config 1,0,0 failed"); 339 return -1; 340 } 341 /* ping camera to be sure STV0680 is present */ 342 if ((i = stv_sndctrl (0, stv680, 0x88, 0x5678, buffer, 0x02)) != 0x02) 343 goto error; 344 if ((buffer[0] != 0x56) || (buffer[1] != 0x78)) { 345 PDEBUG (1, "STV(e): camera ping failed!!"); 346 goto error; 347 } 348 349 /* get camera descriptor */ 350 if ((i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x09)) != 0x09) 351 goto error; 352 i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x22); 353 if (!(i >= 0) && (buffer[7] == 0xa0) && (buffer[8] == 0x23)) { 354 PDEBUG (1, "STV(e): Could not get descriptor 0200."); 355 goto error; 356 } 357 if ((i = stv_sndctrl (0, stv680, 0x8a, 0, buffer, 0x02)) != 0x02) 358 goto error; 359 if ((i = stv_sndctrl (0, stv680, 0x8b, 0, buffer, 0x24)) != 0x24) 360 goto error; 361 if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10) 362 goto error; 363 364 stv680->SupportedModes = buffer[7]; 365 i = stv680->SupportedModes; 366 stv680->CIF = 0; 367 stv680->VGA = 0; 368 stv680->QVGA = 0; 369 if (i & 1) 370 stv680->CIF = 1; 371 if (i & 2) 372 stv680->VGA = 1; 373 if (i & 8) 374 stv680->QVGA = 1; 375 if (stv680->SupportedModes == 0) { 376 PDEBUG (0, "STV(e): There are NO supported STV680 modes!!"); 377 i = -1; 378 goto error; 379 } else { 380 if (stv680->CIF) 381 PDEBUG (0, "STV(i): CIF is supported"); 382 if (stv680->QVGA) 383 PDEBUG (0, "STV(i): QVGA is supported"); 384 } 385 /* FW rev, ASIC rev, sensor ID */ 386 PDEBUG (1, "STV(i): Firmware rev is %i.%i", buffer[0], buffer[1]); 387 PDEBUG (1, "STV(i): ASIC rev is %i.%i", buffer[2], buffer[3]); 388 PDEBUG (1, "STV(i): Sensor ID is %i", (buffer[4]*16) + (buffer[5]>>4)); 389 390 /* set alternate interface 1 */ 391 if ((i = stv_set_config (stv680, 1, 0, 1)) < 0) 392 goto error; 393 394 if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10) 395 goto error; 396 if ((i = stv_sndctrl (0, stv680, 0x8d, 0, buffer, 0x08)) != 0x08) 397 goto error; 398 i = buffer[3]; 399 PDEBUG (0, "STV(i): Camera has %i pictures.", i); 400 401 /* get current mode */ 402 if ((i = stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08)) != 0x08) 403 goto error; 404 stv680->origMode = buffer[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */ 405 406 /* This will attemp CIF mode, if supported. If not, set to QVGA */ 407 memset (buffer, 0, 8); 408 if (stv680->CIF) 409 buffer[0] = 0x00; 410 else if (stv680->QVGA) 411 buffer[0] = 0x03; 412 if ((i = stv_sndctrl (3, stv680, 0x07, 0x0100, buffer, 0x08)) != 0x08) { 413 PDEBUG (0, "STV(i): Set_Camera_Mode failed"); 414 i = -1; 415 goto error; 416 } 417 buffer[0] = 0xf0; 418 stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08); 419 if (((stv680->CIF == 1) && (buffer[0] != 0x00)) || ((stv680->QVGA == 1) && (buffer[0] != 0x03))) { 420 PDEBUG (0, "STV(e): Error setting camera video mode!"); 421 i = -1; 422 goto error; 423 } else { 424 if (buffer[0] == 0) { 425 stv680->VideoMode = 0x0000; 426 PDEBUG (0, "STV(i): Video Mode set to CIF"); 427 } 428 if (buffer[0] == 0x03) { 429 stv680->VideoMode = 0x0300; 430 PDEBUG (0, "STV(i): Video Mode set to QVGA"); 431 } 432 } 433 if ((i = stv_sndctrl (0, stv680, 0x8f, 0, buffer, 0x10)) != 0x10) 434 goto error; 435 bufsize = (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | (buffer[3]); 436 stv680->cwidth = (buffer[4] << 8) | (buffer[5]); /* ->camera = 322, 356, 644 */ 437 stv680->cheight = (buffer[6] << 8) | (buffer[7]); /* ->camera = 242, 292, 484 */ 438 stv680->origGain = buffer[12]; 439 440 goto exit; 441 442error: 443 i = stv_sndctrl (0, stv680, 0x80, 0, buffer, 0x02); /* Get Last Error */ 444 PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buffer[0], buffer[1]); 445 kfree (buffer); 446 return -1; 447 448exit: 449 kfree (buffer); 450 451 /* video = 320x240, 352x288 */ 452 if (stv680->CIF == 1) { 453 stv680->maxwidth = 352; 454 stv680->maxheight = 288; 455 stv680->vwidth = 352; 456 stv680->vheight = 288; 457 } 458 if (stv680->QVGA == 1) { 459 stv680->maxwidth = 320; 460 stv680->maxheight = 240; 461 stv680->vwidth = 320; 462 stv680->vheight = 240; 463 } 464 465 stv680->rawbufsize = bufsize; /* must be ./. by 8 */ 466 stv680->maxframesize = bufsize * 3; /* RGB size */ 467 PDEBUG (2, "STV(i): cwidth = %i, cheight = %i", stv680->cwidth, stv680->cheight); 468 PDEBUG (1, "STV(i): width = %i, height = %i, rawbufsize = %li", stv680->vwidth, stv680->vheight, stv680->rawbufsize); 469 470 /* some default values */ 471 stv680->bulk_in_endpointAddr = 0x82; 472 stv680->dropped = 0; 473 stv680->error = 0; 474 stv680->framecount = 0; 475 stv680->readcount = 0; 476 stv680->streaming = 0; 477 /* bright, white, colour, hue, contrast are set by software, not in stv0680 */ 478 stv680->brightness = 32767; 479 stv680->chgbright = 0; 480 stv680->whiteness = 0; /* only for greyscale */ 481 stv680->colour = 32767; 482 stv680->contrast = 32767; 483 stv680->hue = 32767; 484 stv680->palette = STV_VIDEO_PALETTE; 485 stv680->depth = 24; /* rgb24 bits */ 486 swapRGB = 0; 487 if ((swapRGB_on == 0) && (swapRGB == 0)) 488 PDEBUG (1, "STV(i): swapRGB is (auto) OFF"); 489 else if ((swapRGB_on == 1) && (swapRGB == 1)) 490 PDEBUG (1, "STV(i): swapRGB is (auto) ON"); 491 else if (swapRGB_on == 1) 492 PDEBUG (1, "STV(i): swapRGB is (forced) ON"); 493 else if (swapRGB_on == -1) 494 PDEBUG (1, "STV(i): swapRGB is (forced) OFF"); 495 496 if (stv_set_video_mode (stv680) < 0) { 497 PDEBUG (0, "STV(e): Could not set video mode in stv_init"); 498 return -1; 499 } 500 501 return 0; 502} 503 504/***************** last of pencam routines *******************/ 505 506/******************************************************************** 507 * /proc interface 508 *******************************************************************/ 509 510#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) 511 512static struct proc_dir_entry *stv680_proc_entry = NULL; 513extern struct proc_dir_entry *video_proc_entry; 514 515#define YES_NO(x) ((x) ? "yes" : "no") 516#define ON_OFF(x) ((x) ? "(auto) on" : "(auto) off") 517 518static int stv680_read_proc (char *page, char **start, off_t off, int count, int *eof, void *data) 519{ 520 char *out = page; 521 int len; 522 struct usb_stv *stv680 = data; 523 524 /* Stay under PAGE_SIZE or else bla bla bla.... */ 525 526 out += sprintf (out, "driver_version : %s\n", DRIVER_VERSION); 527 out += sprintf (out, "model : %s\n", stv680->camera_name); 528 out += sprintf (out, "in use : %s\n", YES_NO (stv680->user)); 529 out += sprintf (out, "streaming : %s\n", YES_NO (stv680->streaming)); 530 out += sprintf (out, "num_frames : %d\n", STV680_NUMFRAMES); 531 532 out += sprintf (out, "Current size : %ix%i\n", stv680->vwidth, stv680->vheight); 533 if (swapRGB_on == 0) 534 out += sprintf (out, "swapRGB : %s\n", ON_OFF (swapRGB)); 535 else if (swapRGB_on == 1) 536 out += sprintf (out, "swapRGB : (forced) on\n"); 537 else if (swapRGB_on == -1) 538 out += sprintf (out, "swapRGB : (forced) off\n"); 539 540 out += sprintf (out, "Palette : %i", stv680->palette); 541 542 out += sprintf (out, "\n"); 543 544 out += sprintf (out, "Frames total : %d\n", stv680->readcount); 545 out += sprintf (out, "Frames read : %d\n", stv680->framecount); 546 out += sprintf (out, "Packets dropped : %d\n", stv680->dropped); 547 out += sprintf (out, "Decoding Errors : %d\n", stv680->error); 548 549 len = out - page; 550 len -= off; 551 if (len < count) { 552 *eof = 1; 553 if (len <= 0) 554 return 0; 555 } else 556 len = count; 557 558 *start = page + off; 559 return len; 560} 561 562static int create_proc_stv680_cam (struct usb_stv *stv680) 563{ 564 char name[9]; 565 struct proc_dir_entry *ent; 566 567 if (!stv680_proc_entry || !stv680) 568 return -1; 569 570 sprintf (name, "video%d", stv680->vdev.minor); 571 572 ent = create_proc_entry (name, S_IFREG | S_IRUGO | S_IWUSR, stv680_proc_entry); 573 if (!ent) 574 return -1; 575 576 ent->data = stv680; 577 ent->read_proc = stv680_read_proc; 578 stv680->proc_entry = ent; 579 return 0; 580} 581 582static void destroy_proc_stv680_cam (struct usb_stv *stv680) 583{ 584 /* One to much, just to be sure :) */ 585 char name[9]; 586 587 if (!stv680 || !stv680->proc_entry) 588 return; 589 590 sprintf (name, "video%d", stv680->vdev.minor); 591 remove_proc_entry (name, stv680_proc_entry); 592 stv680->proc_entry = NULL; 593} 594 595static int proc_stv680_create (void) 596{ 597 if (video_proc_entry == NULL) { 598 PDEBUG (0, "STV(e): /proc/video/ doesn't exist!"); 599 return -1; 600 } 601 stv680_proc_entry = create_proc_entry ("stv680", S_IFDIR, video_proc_entry); 602 603 if (stv680_proc_entry) { 604 stv680_proc_entry->owner = THIS_MODULE; 605 } else { 606 PDEBUG (0, "STV(e): Unable to initialize /proc/video/stv680"); 607 return -1; 608 } 609 return 0; 610} 611 612static void proc_stv680_destroy (void) 613{ 614 if (stv680_proc_entry == NULL) 615 return; 616 617 remove_proc_entry ("stv680", video_proc_entry); 618} 619#endif /* CONFIG_PROC_FS && CONFIG_VIDEO_PROC_FS */ 620 621/******************************************************************** 622 * Camera control 623 *******************************************************************/ 624 625static int stv680_get_pict (struct usb_stv *stv680, struct video_picture *p) 626{ 627 /* This sets values for v4l interface. max/min = 65535/0 */ 628 629 p->brightness = stv680->brightness; 630 p->whiteness = stv680->whiteness; /* greyscale */ 631 p->colour = stv680->colour; 632 p->contrast = stv680->contrast; 633 p->hue = stv680->hue; 634 p->palette = stv680->palette; 635 p->depth = stv680->depth; 636 return 0; 637} 638 639static int stv680_set_pict (struct usb_stv *stv680, struct video_picture *p) 640{ 641 /* See above stv680_get_pict */ 642 643 if (p->palette != STV_VIDEO_PALETTE) { 644 PDEBUG (2, "STV(e): Palette set error in _set_pic"); 645 return 1; 646 } 647 648 if (stv680->brightness != p->brightness) { 649 stv680->chgbright = 1; 650 stv680->brightness = p->brightness; 651 } 652 653 stv680->whiteness = p->whiteness; /* greyscale */ 654 stv680->colour = p->colour; 655 stv680->contrast = p->contrast; 656 stv680->hue = p->hue; 657 stv680->palette = p->palette; 658 stv680->depth = p->depth; 659 660 return 0; 661} 662 663static void stv680_video_irq (struct urb *urb) 664{ 665 struct usb_stv *stv680 = urb->context; 666 int length = urb->actual_length; 667 668 if (length < stv680->rawbufsize) 669 PDEBUG (2, "STV(i): Lost data in transfer: exp %li, got %i", stv680->rawbufsize, length); 670 671 /* ohoh... */ 672 if (!stv680->streaming) 673 return; 674 675 if (!stv680->udev) { 676 PDEBUG (0, "STV(e): device vapourished in video_irq"); 677 return; 678 } 679 680 /* 0 sized packets happen if we are to fast, but sometimes the camera 681 keeps sending them forever... 682 */ 683 if (length && !urb->status) { 684 stv680->nullpackets = 0; 685 switch (stv680->scratch[stv680->scratch_next].state) { 686 case BUFFER_READY: 687 case BUFFER_BUSY: 688 stv680->dropped++; 689 break; 690 691 case BUFFER_UNUSED: 692 memcpy (stv680->scratch[stv680->scratch_next].data, 693 (unsigned char *) urb->transfer_buffer, length); 694 stv680->scratch[stv680->scratch_next].state = BUFFER_READY; 695 stv680->scratch[stv680->scratch_next].length = length; 696 if (waitqueue_active (&stv680->wq)) { 697 wake_up_interruptible (&stv680->wq); 698 } 699 stv680->scratch_overflow = 0; 700 stv680->scratch_next++; 701 if (stv680->scratch_next >= STV680_NUMSCRATCH) 702 stv680->scratch_next = 0;; 703 break; 704 } /* switch */ 705 } else { 706 stv680->nullpackets++; 707 if (stv680->nullpackets > STV680_MAX_NULLPACKETS) { 708 if (waitqueue_active (&stv680->wq)) { 709 wake_up_interruptible (&stv680->wq); 710 } 711 } 712 } /* if - else */ 713 714 /* Resubmit urb for new data */ 715 urb->status = 0; 716 urb->dev = stv680->udev; 717 if (usb_submit_urb (urb)) 718 PDEBUG (0, "STV(e): urb burned down in video irq"); 719 return; 720} /* _video_irq */ 721 722static int stv680_start_stream (struct usb_stv *stv680) 723{ 724 struct urb *urb; 725 int err = 0, i; 726 727 stv680->streaming = 1; 728 729 /* Do some memory allocation */ 730 for (i = 0; i < STV680_NUMFRAMES; i++) { 731 stv680->frame[i].data = stv680->fbuf + i * stv680->maxframesize; 732 stv680->frame[i].curpix = 0; 733 } 734 /* packet size = 4096 */ 735 for (i = 0; i < STV680_NUMSBUF; i++) { 736 stv680->sbuf[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL); 737 if (stv680->sbuf[i].data == NULL) { 738 PDEBUG (0, "STV(e): Could not kmalloc raw data buffer %i", i); 739 return -1; 740 } 741 } 742 743 stv680->scratch_next = 0; 744 stv680->scratch_use = 0; 745 stv680->scratch_overflow = 0; 746 for (i = 0; i < STV680_NUMSCRATCH; i++) { 747 stv680->scratch[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL); 748 if (stv680->scratch[i].data == NULL) { 749 PDEBUG (0, "STV(e): Could not kmalloc raw scratch buffer %i", i); 750 return -1; 751 } 752 stv680->scratch[i].state = BUFFER_UNUSED; 753 } 754 755 for (i = 0; i < STV680_NUMSBUF; i++) { 756 urb = usb_alloc_urb (0); 757 if (!urb) 758 return -ENOMEM; 759 760 /* sbuf is urb->transfer_buffer, later gets memcpyed to scratch */ 761 usb_fill_bulk_urb (urb, stv680->udev, 762 usb_rcvbulkpipe (stv680->udev, stv680->bulk_in_endpointAddr), 763 stv680->sbuf[i].data, stv680->rawbufsize, 764 stv680_video_irq, stv680); 765 urb->timeout = PENCAM_TIMEOUT * 2; 766 urb->transfer_flags |= USB_QUEUE_BULK; 767 stv680->urb[i] = urb; 768 err = usb_submit_urb (stv680->urb[i]); 769 if (err) 770 PDEBUG (0, "STV(e): urb burned down in start stream"); 771 } /* i STV680_NUMSBUF */ 772 773 stv680->framecount = 0; 774 return 0; 775} 776 777static int stv680_stop_stream (struct usb_stv *stv680) 778{ 779 int i; 780 781 if (!stv680->streaming || !stv680->udev) 782 return 1; 783 784 stv680->streaming = 0; 785 786 for (i = 0; i < STV680_NUMSBUF; i++) 787 if (stv680->urb[i]) { 788 stv680->urb[i]->next = NULL; 789 usb_unlink_urb (stv680->urb[i]); 790 usb_free_urb (stv680->urb[i]); 791 stv680->urb[i] = NULL; 792 kfree (stv680->sbuf[i].data); 793 } 794 for (i = 0; i < STV680_NUMSCRATCH; i++) { 795 kfree (stv680->scratch[i].data); 796 stv680->scratch[i].data = NULL; 797 } 798 799 return 0; 800} 801 802static int stv680_set_size (struct usb_stv *stv680, int width, int height) 803{ 804 int wasstreaming = stv680->streaming; 805 806 /* Check to see if we need to change */ 807 if ((stv680->vwidth == width) && (stv680->vheight == height)) 808 return 0; 809 810 PDEBUG (1, "STV(i): size request for %i x %i", width, height); 811 /* Check for a valid mode */ 812 if ((!width || !height) || ((width & 1) || (height & 1))) { 813 PDEBUG (1, "STV(e): set_size error: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight); 814 return 1; 815 } 816 817 if ((width < (stv680->maxwidth / 2)) || (height < (stv680->maxheight / 2))) { 818 width = stv680->maxwidth / 2; 819 height = stv680->maxheight / 2; 820 } else if ((width >= 158) && (width <= 166) && (stv680->QVGA == 1)) { 821 width = 160; 822 height = 120; 823 } else if ((width >= 172) && (width <= 180) && (stv680->CIF == 1)) { 824 width = 176; 825 height = 144; 826 } else if ((width >= 318) && (width <= 350) && (stv680->QVGA == 1)) { 827 width = 320; 828 height = 240; 829 } else if ((width >= 350) && (width <= 358) && (stv680->CIF == 1)) { 830 width = 352; 831 height = 288; 832 } else { 833 PDEBUG (1, "STV(e): request for non-supported size: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight); 834 return 1; 835 } 836 837 /* Stop a current stream and start it again at the new size */ 838 if (wasstreaming) 839 stv680_stop_stream (stv680); 840 stv680->vwidth = width; 841 stv680->vheight = height; 842 PDEBUG (1, "STV(i): size set to %i x %i", stv680->vwidth, stv680->vheight); 843 if (wasstreaming) 844 stv680_start_stream (stv680); 845 846 return 0; 847} 848 849/********************************************************************** 850 * Video Decoding 851 **********************************************************************/ 852 853/******* routines from the pencam program; hey, they work! ********/ 854 855/* 856 * STV0680 Vision Camera Chipset Driver 857 * Copyright (C) 2000 Adam Harrison <adam@antispin.org> 858*/ 859 860#define RED 0 861#define GREEN 1 862#define BLUE 2 863#define AD(x, y, w) (((y)*(w)+(x))*3) 864 865static void bayer_unshuffle (struct usb_stv *stv680, struct stv680_scratch *buffer) 866{ 867 int x, y, i; 868 int w = stv680->cwidth; 869 int vw = stv680->cwidth, vh = stv680->cheight; 870 unsigned int p = 0; 871 int colour = 0, bayer = 0; 872 unsigned char *raw = buffer->data; 873 struct stv680_frame *frame = &stv680->frame[stv680->curframe]; 874 unsigned char *output = frame->data; 875 unsigned char *temp = frame->data; 876 int offset = buffer->offset; 877 878 if (frame->curpix == 0) { 879 if (frame->grabstate == FRAME_READY) { 880 frame->grabstate = FRAME_GRABBING; 881 } 882 } 883 if (offset != frame->curpix) { /* Regard frame as lost :( */ 884 frame->curpix = 0; 885 stv680->error++; 886 return; 887 } 888 889 if ((stv680->vwidth == 320) || (stv680->vwidth == 160)) { 890 vw = 320; 891 vh = 240; 892 } 893 if ((stv680->vwidth == 352) || (stv680->vwidth == 176)) { 894 vw = 352; 895 vh = 288; 896 } 897 898 memset (output, 0, 3 * vw * vh); /* clear output matrix. */ 899 900 for (y = 0; y < vh; y++) { 901 for (x = 0; x < vw; x++) { 902 if (x & 1) 903 p = *(raw + y * w + (x >> 1)); 904 else 905 p = *(raw + y * w + (x >> 1) + (w >> 1)); 906 907 if (y & 1) 908 bayer = 2; 909 else 910 bayer = 0; 911 if (x & 1) 912 bayer++; 913 914 switch (bayer) { 915 case 0: 916 case 3: 917 colour = 1; 918 break; 919 case 1: 920 colour = 0; 921 break; 922 case 2: 923 colour = 2; 924 break; 925 } 926 i = (y * vw + x) * 3; 927 *(output + i + colour) = (unsigned char) p; 928 } /* for x */ 929 930 } /* for y */ 931 932 /****** gamma correction plus hardcoded white balance */ 933 /* Thanks to Alexander Schwartx <alexander.schwartx@gmx.net> for this code. 934 Correction values red[], green[], blue[], are generated by 935 (pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255. 936 White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and 937 converted to unsigned char. Values are in stv680.h */ 938 939 for (y = 0; y < vh; y++) { 940 for (x = 0; x < vw; x++) { 941 i = (y * vw + x) * 3; 942 *(output + i) = red[*(output + i)]; 943 *(output + i + 1) = green[*(output + i + 1)]; 944 *(output + i + 2) = blue[*(output + i + 2)]; 945 } 946 } 947 948 /****** bayer demosaic ******/ 949 for (y = 1; y < (vh - 1); y++) { 950 for (x = 1; x < (vw - 1); x++) { /* work out pixel type */ 951 if (y & 1) 952 bayer = 0; 953 else 954 bayer = 2; 955 if (!(x & 1)) 956 bayer++; 957 958 switch (bayer) { 959 case 0: /* green. blue lr, red tb */ 960 *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y, vw) + BLUE) + (int) *(output + AD (x + 1, y, vw) + BLUE)) >> 1; 961 *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x, y - 1, vw) + RED) + (int) *(output + AD (x, y + 1, vw) + RED)) >> 1; 962 break; 963 964 case 1: /* blue. green lrtb, red diagonals */ 965 *(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2; 966 *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y - 1, vw) + RED) + (int) *(output + AD (x - 1, y + 1, vw) + RED) + (int) *(output + AD (x + 1, y - 1, vw) + RED) + (int) *(output + AD (x + 1, y + 1, vw) + RED)) >> 2; 967 break; 968 969 case 2: /* red. green lrtb, blue diagonals */ 970 *(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2; 971 *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y - 1, vw) + BLUE) + (int) *(output + AD (x + 1, y - 1, vw) + BLUE) + (int) *(output + AD (x - 1, y + 1, vw) + BLUE) + (int) *(output + AD (x + 1, y + 1, vw) + BLUE)) >> 2; 972 break; 973 974 case 3: /* green. red lr, blue tb */ 975 *(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y, vw) + RED) + (int) *(output + AD (x + 1, y, vw) + RED)) >> 1; 976 *(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x, y - 1, vw) + BLUE) + (int) *(output + AD (x, y + 1, vw) + BLUE)) >> 1; 977 break; 978 } /* switch */ 979 } /* for x */ 980 } /* for y - end demosaic */ 981 982 /* fix top and bottom row, left and right side */ 983 i = vw * 3; 984 memcpy (output, (output + i), i); 985 memcpy ((output + (vh * i)), (output + ((vh - 1) * i)), i); 986 for (y = 0; y < vh; y++) { 987 i = y * vw * 3; 988 memcpy ((output + i), (output + i + 3), 3); 989 memcpy ((output + i + (vw * 3)), (output + i + (vw - 1) * 3), 3); 990 } 991 992 /* process all raw data, then trim to size if necessary */ 993 if ((stv680->vwidth == 160) || (stv680->vwidth == 176)) { 994 i = 0; 995 for (y = 0; y < vh; y++) { 996 if (!(y & 1)) { 997 for (x = 0; x < vw; x++) { 998 p = (y * vw + x) * 3; 999 if (!(x & 1)) { 1000 *(output + i) = *(output + p); 1001 *(output + i + 1) = *(output + p + 1); 1002 *(output + i + 2) = *(output + p + 2); 1003 i += 3; 1004 } 1005 } /* for x */ 1006 } 1007 } /* for y */ 1008 } 1009 /* reset to proper width */ 1010 if ((stv680->vwidth == 160)) { 1011 vw = 160; 1012 vh = 120; 1013 } 1014 if ((stv680->vwidth == 176)) { 1015 vw = 176; 1016 vh = 144; 1017 } 1018 1019 /* output is RGB; some programs want BGR */ 1020 /* swapRGB_on=0 -> program decides; swapRGB_on=1, always swap */ 1021 /* swapRGB_on=-1, never swap */ 1022 if (((swapRGB == 1) && (swapRGB_on != -1)) || (swapRGB_on == 1)) { 1023 for (y = 0; y < vh; y++) { 1024 for (x = 0; x < vw; x++) { 1025 i = (y * vw + x) * 3; 1026 *(temp) = *(output + i); 1027 *(output + i) = *(output + i + 2); 1028 *(output + i + 2) = *(temp); 1029 } 1030 } 1031 } 1032 /* brightness */ 1033 if (stv680->chgbright == 1) { 1034 if (stv680->brightness >= 32767) { 1035 p = (stv680->brightness - 32767) / 256; 1036 for (x = 0; x < (vw * vh * 3); x++) { 1037 if ((*(output + x) + (unsigned char) p) > 255) 1038 *(output + x) = 255; 1039 else 1040 *(output + x) += (unsigned char) p; 1041 } /* for */ 1042 } else { 1043 p = (32767 - stv680->brightness) / 256; 1044 for (x = 0; x < (vw * vh * 3); x++) { 1045 if ((unsigned char) p > *(output + x)) 1046 *(output + x) = 0; 1047 else 1048 *(output + x) -= (unsigned char) p; 1049 } /* for */ 1050 } /* else */ 1051 } 1052 /* if */ 1053 frame->curpix = 0; 1054 frame->curlinepix = 0; 1055 frame->grabstate = FRAME_DONE; 1056 stv680->framecount++; 1057 stv680->readcount++; 1058 if (stv680->frame[(stv680->curframe + 1) & (STV680_NUMFRAMES - 1)].grabstate == FRAME_READY) { 1059 stv680->curframe = (stv680->curframe + 1) & (STV680_NUMFRAMES - 1); 1060 } 1061 1062} /* bayer_unshuffle */ 1063 1064/******* end routines from the pencam program *********/ 1065 1066static int stv680_newframe (struct usb_stv *stv680, int framenr) 1067{ 1068 int errors = 0; 1069 1070 while (stv680->streaming && (stv680->frame[framenr].grabstate == FRAME_READY || stv680->frame[framenr].grabstate == FRAME_GRABBING)) { 1071 if (!stv680->frame[framenr].curpix) { 1072 errors++; 1073 } 1074 wait_event_interruptible (stv680->wq, (stv680->scratch[stv680->scratch_use].state == BUFFER_READY)); 1075 1076 if (stv680->removed) 1077 return -ENODEV; 1078 1079 if (stv680->nullpackets > STV680_MAX_NULLPACKETS) { 1080 stv680->nullpackets = 0; 1081 PDEBUG (2, "STV(i): too many null length packets, restarting capture"); 1082 stv680_stop_stream (stv680); 1083 stv680_start_stream (stv680); 1084 } else { 1085 if (stv680->scratch[stv680->scratch_use].state != BUFFER_READY) { 1086 stv680->frame[framenr].grabstate = FRAME_ERROR; 1087 PDEBUG (2, "STV(e): FRAME_ERROR in _newframe"); 1088 return -EIO; 1089 } 1090 stv680->scratch[stv680->scratch_use].state = BUFFER_BUSY; 1091 1092 bayer_unshuffle (stv680, &stv680->scratch[stv680->scratch_use]); 1093 1094 stv680->scratch[stv680->scratch_use].state = BUFFER_UNUSED; 1095 stv680->scratch_use++; 1096 if (stv680->scratch_use >= STV680_NUMSCRATCH) 1097 stv680->scratch_use = 0; 1098 if (errors > STV680_MAX_ERRORS) { 1099 errors = 0; 1100 PDEBUG (2, "STV(i): too many errors, restarting capture"); 1101 stv680_stop_stream (stv680); 1102 stv680_start_stream (stv680); 1103 } 1104 } /* else */ 1105 } /* while */ 1106 return 0; 1107} 1108 1109/********************************************************************* 1110 * Video4Linux 1111 *********************************************************************/ 1112 1113static int stv_open (struct video_device *dev, int flags) 1114{ 1115 struct usb_stv *stv680 = (struct usb_stv *) dev; 1116 int err = 0; 1117 1118 /* we are called with the BKL held */ 1119 MOD_INC_USE_COUNT; 1120 stv680->user = 1; 1121 err = stv_init (stv680); /* main initialization routine for camera */ 1122 1123 if (err >= 0) { 1124 stv680->fbuf = rvmalloc (stv680->maxframesize * STV680_NUMFRAMES); 1125 if (!stv680->fbuf) { 1126 PDEBUG (0, "STV(e): Could not rvmalloc frame bufer"); 1127 err = -ENOMEM; 1128 } 1129 } 1130 if (err) { 1131 MOD_DEC_USE_COUNT; 1132 stv680->user = 0; 1133 } 1134 1135 return err; 1136} 1137 1138static void stv_close (struct video_device *dev) 1139{ 1140 /* called with BKL held */ 1141 struct usb_stv *stv680 = (struct usb_stv *) dev; 1142 int i; 1143 1144 for (i = 0; i < STV680_NUMFRAMES; i++) 1145 stv680->frame[i].grabstate = FRAME_UNUSED; 1146 if (stv680->streaming && !stv680->removed) 1147 stv680_stop_stream (stv680); 1148 1149 if ((!stv680->removed) && (i = stv_stop_video (stv680)) < 0) 1150 PDEBUG (1, "STV(e): stop_video failed in stv_close"); 1151 1152 rvfree (stv680->fbuf, stv680->maxframesize * STV680_NUMFRAMES); 1153 stv680->user = 0; 1154 1155 if (stv680->removed) { 1156 video_unregister_device (&stv680->vdev); 1157 kfree (stv680); 1158 stv680 = NULL; 1159 PDEBUG (0, "STV(i): device unregistered"); 1160 } 1161 MOD_DEC_USE_COUNT; 1162} 1163 1164static long stv680_write (struct video_device *dev, const char *buf, unsigned long count, int noblock) 1165{ 1166 return -EINVAL; 1167} 1168 1169static int stv680_ioctl (struct video_device *vdev, unsigned int cmd, void *arg) 1170{ 1171 struct usb_stv *stv680 = (struct usb_stv *) vdev; 1172 1173 if (!stv680->udev) 1174 return -EIO; 1175 1176 if (stv680->removed) 1177 return -ENODEV; 1178 1179 switch (cmd) { 1180 case VIDIOCGCAP:{ 1181 struct video_capability b; 1182 1183 strcpy (b.name, stv680->camera_name); 1184 b.type = VID_TYPE_CAPTURE; 1185 b.channels = 1; 1186 b.audios = 0; 1187 b.maxwidth = stv680->maxwidth; 1188 b.maxheight = stv680->maxheight; 1189 b.minwidth = stv680->maxwidth / 2; 1190 b.minheight = stv680->maxheight / 2; 1191 1192 if (copy_to_user (arg, &b, sizeof (b))) { 1193 PDEBUG (2, "STV(e): VIDIOCGGAP failed"); 1194 return -EFAULT; 1195 } 1196 return 0; 1197 } 1198 case VIDIOCGCHAN:{ 1199 struct video_channel v; 1200 1201 if (copy_from_user (&v, arg, sizeof (v))) 1202 return -EFAULT; 1203 if (v.channel != 0) 1204 return -EINVAL; 1205 1206 v.flags = 0; 1207 v.tuners = 0; 1208 v.type = VIDEO_TYPE_CAMERA; 1209 strcpy (v.name, "STV Camera"); 1210 1211 if (copy_to_user (arg, &v, sizeof (v))) { 1212 PDEBUG (2, "STV(e): VIDIOCGCHAN failed"); 1213 return -EFAULT; 1214 } 1215 return 0; 1216 } 1217 case VIDIOCSCHAN:{ 1218 int v; 1219 1220 if (copy_from_user (&v, arg, sizeof (v))) { 1221 PDEBUG (2, "STV(e): VIDIOCSCHAN failed"); 1222 return -EFAULT; 1223 } 1224 if (v != 0) 1225 return -EINVAL; 1226 1227 return 0; 1228 } 1229 case VIDIOCGPICT:{ 1230 struct video_picture p; 1231 1232 stv680_get_pict (stv680, &p); 1233 if (copy_to_user (arg, &p, sizeof (p))) { 1234 PDEBUG (2, "STV(e): VIDIOCGPICT failed"); 1235 return -EFAULT; 1236 } 1237 return 0; 1238 } 1239 case VIDIOCSPICT:{ 1240 struct video_picture p; 1241 1242 if (copy_from_user (&p, arg, sizeof (p))) { 1243 PDEBUG (2, "STV(e): VIDIOCSPICT failed"); 1244 return -EFAULT; 1245 } 1246 PDEBUG (2, "STV(i): palette set to %i in VIDIOSPICT", p.palette); 1247 1248 if (stv680_set_pict (stv680, &p)) 1249 return -EINVAL; 1250 return 0; 1251 } 1252 case VIDIOCSWIN:{ 1253 struct video_window vw; 1254 1255 if (copy_from_user (&vw, arg, sizeof (vw))) 1256 return -EFAULT; 1257 if (vw.flags) 1258 return -EINVAL; 1259 if (vw.clipcount) 1260 return -EINVAL; 1261 if (vw.width != stv680->vwidth) { 1262 if (stv680_set_size (stv680, vw.width, vw.height)) { 1263 PDEBUG (2, "STV(e): failed (from user) set size in VIDIOCSWIN"); 1264 return -EINVAL; 1265 } 1266 } 1267 return 0; 1268 } 1269 case VIDIOCGWIN:{ 1270 struct video_window vw; 1271 1272 vw.x = 0; /* FIXME */ 1273 vw.y = 0; 1274 vw.chromakey = 0; 1275 vw.flags = 0; 1276 vw.clipcount = 0; 1277 vw.width = stv680->vwidth; 1278 vw.height = stv680->vheight; 1279 1280 if (copy_to_user (arg, &vw, sizeof (vw))) { 1281 PDEBUG (2, "STV(e): VIDIOCGWIN failed"); 1282 return -EFAULT; 1283 } 1284 return 0; 1285 } 1286 case VIDIOCGMBUF:{ 1287 struct video_mbuf vm; 1288 int i; 1289 1290 memset (&vm, 0, sizeof (vm)); 1291 vm.size = STV680_NUMFRAMES * stv680->maxframesize; 1292 vm.frames = STV680_NUMFRAMES; 1293 for (i = 0; i < STV680_NUMFRAMES; i++) 1294 vm.offsets[i] = stv680->maxframesize * i; 1295 1296 if (copy_to_user ((void *) arg, (void *) &vm, sizeof (vm))) { 1297 PDEBUG (2, "STV(e): VIDIOCGMBUF failed"); 1298 return -EFAULT; 1299 } 1300 1301 return 0; 1302 } 1303 case VIDIOCMCAPTURE:{ 1304 struct video_mmap vm; 1305 1306 if (copy_from_user (&vm, arg, sizeof (vm))) { 1307 PDEBUG (2, "STV(e): VIDIOCMCAPTURE failed"); 1308 return -EFAULT; 1309 } 1310 if (vm.format != STV_VIDEO_PALETTE) { 1311 PDEBUG (2, "STV(i): VIDIOCMCAPTURE vm.format (%i) != VIDEO_PALETTE (%i)", 1312 vm.format, STV_VIDEO_PALETTE); 1313 if ((vm.format == 3) && (swapRGB_on == 0)) { 1314 PDEBUG (2, "STV(i): VIDIOCMCAPTURE swapRGB is (auto) ON"); 1315 /* this may fix those apps (e.g., xawtv) that want BGR */ 1316 swapRGB = 1; 1317 } 1318 return -EINVAL; 1319 } 1320 if (vm.frame >= STV680_NUMFRAMES) { 1321 PDEBUG (2, "STV(e): VIDIOCMCAPTURE vm.frame > NUMFRAMES"); 1322 return -EINVAL; 1323 } 1324 if ((stv680->frame[vm.frame].grabstate == FRAME_ERROR) 1325 || (stv680->frame[vm.frame].grabstate == FRAME_GRABBING)) { 1326 PDEBUG (2, "STV(e): VIDIOCMCAPTURE grabstate (%i) error", 1327 stv680->frame[vm.frame].grabstate); 1328 return -EBUSY; 1329 } 1330 /* Is this according to the v4l spec??? */ 1331 if (stv680->vwidth != vm.width) { 1332 if (stv680_set_size (stv680, vm.width, vm.height)) { 1333 PDEBUG (2, "STV(e): VIDIOCMCAPTURE set_size failed"); 1334 return -EINVAL; 1335 } 1336 } 1337 stv680->frame[vm.frame].grabstate = FRAME_READY; 1338 1339 if (!stv680->streaming) 1340 stv680_start_stream (stv680); 1341 1342 return 0; 1343 } 1344 case VIDIOCSYNC:{ 1345 int frame, ret = 0; 1346 1347 if (copy_from_user ((void *) &frame, arg, sizeof (int))) { 1348 PDEBUG (2, "STV(e): VIDIOCSYNC failed"); 1349 return -EFAULT; 1350 } 1351 if (frame < 0 || frame >= STV680_NUMFRAMES) { 1352 PDEBUG (2, "STV(e): Bad frame # in VIDIOCSYNC"); 1353 return -EINVAL; 1354 } 1355 ret = stv680_newframe (stv680, frame); 1356 stv680->frame[frame].grabstate = FRAME_UNUSED; 1357 return ret; 1358 } 1359 case VIDIOCGFBUF:{ 1360 struct video_buffer vb; 1361 1362 memset (&vb, 0, sizeof (vb)); 1363 vb.base = NULL; /* frame buffer not supported, not used */ 1364 1365 if (copy_to_user ((void *) arg, (void *) &vb, sizeof (vb))) { 1366 PDEBUG (2, "STV(e): VIDIOCSYNC failed"); 1367 return -EFAULT; 1368 } 1369 return 0; 1370 } 1371 case VIDIOCKEY: 1372 return 0; 1373 case VIDIOCCAPTURE: 1374 { 1375 PDEBUG (2, "STV(e): VIDIOCCAPTURE failed"); 1376 return -EINVAL; 1377 } 1378 case VIDIOCSFBUF: 1379 return -EINVAL; 1380 case VIDIOCGTUNER: 1381 case VIDIOCSTUNER: 1382 return -EINVAL; 1383 case VIDIOCGFREQ: 1384 case VIDIOCSFREQ: 1385 return -EINVAL; 1386 case VIDIOCGAUDIO: 1387 case VIDIOCSAUDIO: 1388 return -EINVAL; 1389 default: 1390 return -ENOIOCTLCMD; 1391 } /* end switch */ 1392 1393 return 0; 1394} 1395 1396static int stv680_mmap (struct video_device *dev, const char *adr, unsigned long size) 1397{ 1398 struct usb_stv *stv680 = (struct usb_stv *) dev; 1399 unsigned long start = (unsigned long) adr; 1400 unsigned long page, pos; 1401 1402 down (&stv680->lock); 1403 1404 if (stv680->udev == NULL) { 1405 up (&stv680->lock); 1406 return -EIO; 1407 } 1408 if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1) 1409 & ~(PAGE_SIZE - 1))) { 1410 up (&stv680->lock); 1411 return -EINVAL; 1412 } 1413 pos = (unsigned long) stv680->fbuf; 1414 while (size > 0) { 1415 page = kvirt_to_pa (pos); 1416 if (remap_page_range (start, page, PAGE_SIZE, PAGE_SHARED)) { 1417 up (&stv680->lock); 1418 return -EAGAIN; 1419 } 1420 start += PAGE_SIZE; 1421 pos += PAGE_SIZE; 1422 if (size > PAGE_SIZE) 1423 size -= PAGE_SIZE; 1424 else 1425 size = 0; 1426 } 1427 up (&stv680->lock); 1428 1429 return 0; 1430} 1431 1432static long stv680_read (struct video_device *dev, char *buf, unsigned long count, int noblock) 1433{ 1434 unsigned long int realcount = count; 1435 int ret = 0; 1436 struct usb_stv *stv680 = (struct usb_stv *) dev; 1437 unsigned long int i; 1438 1439 if (STV680_NUMFRAMES != 2) { 1440 PDEBUG (0, "STV(e): STV680_NUMFRAMES needs to be 2!"); 1441 return -1; 1442 } 1443 if (stv680->udev == NULL) 1444 return -EIO; 1445 if (realcount > (stv680->vwidth * stv680->vheight * 3)) 1446 realcount = stv680->vwidth * stv680->vheight * 3; 1447 1448 /* Shouldn't happen: */ 1449 if (stv680->frame[0].grabstate == FRAME_GRABBING) { 1450 PDEBUG (2, "STV(e): FRAME_GRABBING in stv680_read"); 1451 return -EBUSY; 1452 } 1453 stv680->frame[0].grabstate = FRAME_READY; 1454 stv680->frame[1].grabstate = FRAME_UNUSED; 1455 stv680->curframe = 0; 1456 1457 if (!stv680->streaming) 1458 stv680_start_stream (stv680); 1459 1460 if (!stv680->streaming) { 1461 ret = stv680_newframe (stv680, 0); /* ret should = 0 */ 1462 } 1463 1464 ret = stv680_newframe (stv680, 0); 1465 1466 if (!ret) { 1467 if ((i = copy_to_user (buf, stv680->frame[0].data, realcount)) != 0) { 1468 PDEBUG (2, "STV(e): copy_to_user frame 0 failed, ret count = %li", i); 1469 return -EFAULT; 1470 } 1471 } else { 1472 realcount = ret; 1473 } 1474 stv680->frame[0].grabstate = FRAME_UNUSED; 1475 return realcount; 1476} /* stv680_read */ 1477 1478static int stv_init_done (struct video_device *dev) 1479{ 1480 1481#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) 1482 if (create_proc_stv680_cam ((struct usb_stv *) dev) < 0) 1483 return -1; 1484#endif 1485 return 0; 1486} 1487 1488static struct video_device stv680_template = { 1489 owner: THIS_MODULE, 1490 name: "STV0680 USB camera", 1491 type: VID_TYPE_CAPTURE, 1492 hardware: VID_HARDWARE_SE401, 1493 open: stv_open, 1494 close: stv_close, 1495 read: stv680_read, 1496 write: stv680_write, 1497 ioctl: stv680_ioctl, 1498 mmap: stv680_mmap, 1499 initialize: stv_init_done, 1500}; 1501 1502static void *stv680_probe (struct usb_device *dev, unsigned int ifnum, const struct usb_device_id *id) 1503{ 1504 struct usb_interface_descriptor *interface; 1505 struct usb_stv *stv680; 1506 char *camera_name = NULL; 1507 1508 /* We don't handle multi-config cameras */ 1509 if (dev->descriptor.bNumConfigurations != 1) { 1510 PDEBUG (0, "STV(e): Number of Configurations != 1"); 1511 return NULL; 1512 } 1513 1514 interface = &dev->actconfig->interface[ifnum].altsetting[0]; 1515 /* Is it a STV680? */ 1516 if ((dev->descriptor.idVendor == USB_PENCAM_VENDOR_ID) && (dev->descriptor.idProduct == USB_PENCAM_PRODUCT_ID)) { 1517 camera_name = "STV0680"; 1518 PDEBUG (0, "STV(i): STV0680 camera found."); 1519 } else { 1520 PDEBUG (0, "STV(e): Vendor/Product ID do not match STV0680 values."); 1521 PDEBUG (0, "STV(e): Check that the STV0680 camera is connected to the computer."); 1522 return NULL; 1523 } 1524 /* We found one */ 1525 if ((stv680 = kmalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) { 1526 PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct."); 1527 return NULL; 1528 } 1529 1530 memset (stv680, 0, sizeof (*stv680)); 1531 1532 stv680->udev = dev; 1533 stv680->camera_name = camera_name; 1534 1535 memcpy (&stv680->vdev, &stv680_template, sizeof (stv680_template)); 1536 memcpy (stv680->vdev.name, stv680->camera_name, strlen (stv680->camera_name)); 1537 init_waitqueue_head (&stv680->wq); 1538 init_MUTEX (&stv680->lock); 1539 wmb (); 1540 1541 if (video_register_device (&stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) { 1542 kfree (stv680); 1543 PDEBUG (0, "STV(e): video_register_device failed"); 1544 return NULL; 1545 } 1546 PDEBUG (0, "STV(i): registered new video device: video%d", stv680->vdev.minor); 1547 1548 return stv680; 1549} 1550 1551static inline void usb_stv680_remove_disconnected (struct usb_stv *stv680) 1552{ 1553 int i; 1554 1555 stv680->udev = NULL; 1556 stv680->frame[0].grabstate = FRAME_ERROR; 1557 stv680->frame[1].grabstate = FRAME_ERROR; 1558 stv680->streaming = 0; 1559 1560 wake_up_interruptible (&stv680->wq); 1561 1562 for (i = 0; i < STV680_NUMSBUF; i++) 1563 if (stv680->urb[i]) { 1564 stv680->urb[i]->next = NULL; 1565 usb_unlink_urb (stv680->urb[i]); 1566 usb_free_urb (stv680->urb[i]); 1567 stv680->urb[i] = NULL; 1568 kfree (stv680->sbuf[i].data); 1569 } 1570 for (i = 0; i < STV680_NUMSCRATCH; i++) 1571 if (stv680->scratch[i].data) { 1572 kfree (stv680->scratch[i].data); 1573 } 1574 PDEBUG (0, "STV(i): %s disconnected", stv680->camera_name); 1575 1576#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) 1577 destroy_proc_stv680_cam (stv680); 1578#endif 1579 /* Free the memory */ 1580 kfree (stv680); 1581} 1582 1583static void stv680_disconnect (struct usb_device *dev, void *ptr) 1584{ 1585 struct usb_stv *stv680 = (struct usb_stv *) ptr; 1586 int i; 1587 1588 lock_kernel (); 1589 /* We don't want people trying to open up the device */ 1590 if (!stv680->user) { 1591 video_unregister_device (&stv680->vdev); 1592 usb_stv680_remove_disconnected (stv680); 1593 } else { 1594 stv680->removed = 1; 1595 for( i = 0; i < STV680_NUMSBUF; i++) 1596 usb_unlink_urb(stv680->urb[i]); 1597 wake_up_interruptible (&stv680->wq); 1598 } 1599 unlock_kernel (); 1600} 1601 1602static struct usb_driver stv680_driver = { 1603 name: "stv680", 1604 probe: stv680_probe, 1605 disconnect: stv680_disconnect, 1606 id_table: device_table 1607}; 1608 1609/******************************************************************** 1610 * Module routines 1611 ********************************************************************/ 1612 1613static int __init usb_stv680_init (void) 1614{ 1615#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) 1616 if (proc_stv680_create () < 0) 1617 return -1; 1618#endif 1619 if (usb_register (&stv680_driver) < 0) { 1620 PDEBUG (0, "STV(e): Could not setup STV0680 driver"); 1621 return -1; 1622 } 1623 PDEBUG (0, "STV(i): usb camera driver version %s registering", DRIVER_VERSION); 1624 1625 info(DRIVER_DESC " " DRIVER_VERSION); 1626 return 0; 1627} 1628 1629static void __exit usb_stv680_exit (void) 1630{ 1631 usb_deregister (&stv680_driver); 1632 PDEBUG (0, "STV(i): driver deregistered"); 1633 1634#if defined(CONFIG_PROC_FS) && defined(CONFIG_VIDEO_PROC_FS) 1635 proc_stv680_destroy (); 1636#endif 1637} 1638 1639module_init (usb_stv680_init); 1640module_exit (usb_stv680_exit); 1641