drivers/usb/media/konicawc.c

   1 /*
   2  * konicawc.c - konica webcam driver
   3  *
   4  * Author: Simon Evans <spse@secret.org.uk>
   5  *
   6  * Copyright (C) 2002 Simon Evans
   7  *
   8  * Licence: GPL
   9  *
  10  * Driver for USB webcams based on Konica chipset. This
  11  * chipset is used in Intel YC76 camera.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/input.h>
  19
  20 #include "usbvideo.h"
  21
  22 #define MAX_BRIGHTNESS  108
  23 #define MAX_CONTRAST    108
  24 #define MAX_SATURATION  108
  25 #define MAX_SHARPNESS   108
  26 #define MAX_WHITEBAL    372
  27 #define MAX_SPEED       6
  28
  29
  30 #define MAX_CAMERAS     1
  31
  32 #define DRIVER_VERSION  "v1.4"
  33 #define DRIVER_DESC     "Konica Webcam driver"
  34
  35 enum ctrl_req {
  36         SetWhitebal     = 0x01,
  37         SetBrightness   = 0x02,
  38         SetSharpness    = 0x03,
  39         SetContrast     = 0x04,
  40         SetSaturation   = 0x05,
  41 };
  42
  43
  44 enum frame_sizes {
  45         SIZE_160X120    = 0,
  46         SIZE_160X136    = 1,
  47         SIZE_176X144    = 2,
  48         SIZE_320X240    = 3,
  49
  50 };
  51
  52 #define MAX_FRAME_SIZE  SIZE_320X240
  53
  54 static struct usbvideo *cams;
  55
  56 #ifdef CONFIG_USB_DEBUG
  57 static int debug;
  58 #define DEBUG(n, format, arg...) \
  59         if (n <= debug) {        \
  60                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \
  61         }
  62 #else
  63 #define DEBUG(n, arg...)
  64 static const int debug = 0;
  65 #endif
  66
  67
  68 /* Some default values for initial camera settings,
  69    can be set by modprobe */
  70
  71 static int size;
  72 static int speed = 6;           /* Speed (fps) 0 (slowest) to 6 (fastest) */
  73 static int brightness = MAX_BRIGHTNESS/2;
  74 static int contrast =   MAX_CONTRAST/2;
  75 static int saturation = MAX_SATURATION/2;
  76 static int sharpness =  MAX_SHARPNESS/2;
  77 static int whitebal =   3*(MAX_WHITEBAL/4);
  78
  79 static int spd_to_iface[] = { 1, 0, 3, 2, 4, 5, 6 };
  80
  81 /* These FPS speeds are from the windows config box. They are
  82  * indexed on size (0-2) and speed (0-6). Divide by 3 to get the
  83  * real fps.
  84  */
  85
  86 static int spd_to_fps[][7] = { { 24, 40, 48, 60, 72, 80, 100 },
  87                                { 24, 40, 48, 60, 72, 80, 100 },
  88                                { 18, 30, 36, 45, 54, 60, 75  },
  89                                { 6,  10, 12, 15, 18, 21, 25  } };
  90
  91 struct cam_size {
  92         u16     width;
  93         u16     height;
  94         u8      cmd;
  95 };
  96
  97 static struct cam_size camera_sizes[] = { { 160, 120, 0x7 },
  98                                           { 160, 136, 0xa },
  99                                           { 176, 144, 0x4 },
 100                                           { 320, 240, 0x5 } };
 101
 102 struct konicawc {
 103         u8 brightness;          /* camera uses 0 - 9, x11 for real value */
 104         u8 contrast;            /* as above */
 105         u8 saturation;          /* as above */
 106         u8 sharpness;           /* as above */
 107         u8 white_bal;           /* 0 - 33, x11 for real value */
 108         u8 speed;               /* Stored as 0 - 6, used as index in spd_to_* (above) */
 109         u8 size;                /* Frame Size */
 110         int height;
 111         int width;
 112         struct urb *sts_urb[USBVIDEO_NUMSBUF];
 113         u8 sts_buf[USBVIDEO_NUMSBUF][FRAMES_PER_DESC];
 114         struct urb *last_data_urb;
 115         int lastframe;
 116         int cur_frame_size;     /* number of bytes in current frame size */
 117         int maxline;            /* number of lines per frame */
 118         int yplanesz;           /* Number of bytes in the Y plane */
 119         unsigned int buttonsts:1;
 120 #ifdef CONFIG_INPUT
 121         struct input_dev input;
 122         char input_physname[64];
 123 #endif
 124 };
 125
 126
 127 #define konicawc_set_misc(uvd, req, value, index)               konicawc_ctrl_msg(uvd, USB_DIR_OUT, req, value, index, NULL, 0)
 128 #define konicawc_get_misc(uvd, req, value, index, buf, sz)      konicawc_ctrl_msg(uvd, USB_DIR_IN, req, value, index, buf, sz)
 129 #define konicawc_set_value(uvd, value, index)                   konicawc_ctrl_msg(uvd, USB_DIR_OUT, 2, value, index, NULL, 0)
 130
 131
 132 static int konicawc_ctrl_msg(struct uvd *uvd, u8 dir, u8 request, u16 value, u16 index, void *buf, int len)
 133 {
 134         int retval = usb_control_msg(uvd->dev,
 135                 dir ? usb_rcvctrlpipe(uvd->dev, 0) : usb_sndctrlpipe(uvd->dev, 0),
 136                     request, 0x40 | dir, value, index, buf, len, 1000);
 137         return retval < 0 ? retval : 0;
 138 }
 139
 140
 141 static inline void konicawc_camera_on(struct uvd *uvd)
 142 {
 143         DEBUG(0, "camera on");
 144         konicawc_set_misc(uvd, 0x2, 1, 0x0b);
 145 }
 146
 147
 148 static inline void konicawc_camera_off(struct uvd *uvd)
 149 {
 150         DEBUG(0, "camera off");
 151         konicawc_set_misc(uvd, 0x2, 0, 0x0b);
 152 }
 153
 154
 155 static void konicawc_set_camera_size(struct uvd *uvd)
 156 {
 157         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 158
 159         konicawc_set_misc(uvd, 0x2, camera_sizes[cam->size].cmd, 0x08);
 160         cam->width = camera_sizes[cam->size].width;
 161         cam->height = camera_sizes[cam->size].height;
 162         cam->yplanesz = cam->height * cam->width;
 163         cam->cur_frame_size = (cam->yplanesz * 3) / 2;
 164         cam->maxline = cam->yplanesz / 256;
 165         uvd->videosize = VIDEOSIZE(cam->width, cam->height);
 166 }
 167
 168
 169 static int konicawc_setup_on_open(struct uvd *uvd)
 170 {
 171         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 172
 173         DEBUG(1, "setting brightness to %d (%d)", cam->brightness,
 174             cam->brightness * 11);
 175         konicawc_set_value(uvd, cam->brightness, SetBrightness);
 176         DEBUG(1, "setting white balance to %d (%d)", cam->white_bal,
 177             cam->white_bal * 11);
 178         konicawc_set_value(uvd, cam->white_bal, SetWhitebal);
 179         DEBUG(1, "setting contrast to %d (%d)", cam->contrast,
 180             cam->contrast * 11);
 181         konicawc_set_value(uvd, cam->contrast, SetContrast);
 182         DEBUG(1, "setting saturation to %d (%d)", cam->saturation,
 183             cam->saturation * 11);
 184         konicawc_set_value(uvd, cam->saturation, SetSaturation);
 185         DEBUG(1, "setting sharpness to %d (%d)", cam->sharpness,
 186             cam->sharpness * 11);
 187         konicawc_set_value(uvd, cam->sharpness, SetSharpness);
 188         konicawc_set_camera_size(uvd);
 189         cam->lastframe = -2;
 190         cam->buttonsts = 0;
 191         return 0;
 192 }
 193
 194
 195 static void konicawc_adjust_picture(struct uvd *uvd)
 196 {
 197         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 198
 199         konicawc_camera_off(uvd);
 200         DEBUG(1, "new brightness: %d", uvd->vpic.brightness);
 201         uvd->vpic.brightness = (uvd->vpic.brightness > MAX_BRIGHTNESS) ? MAX_BRIGHTNESS : uvd->vpic.brightness;
 202         if(cam->brightness != uvd->vpic.brightness / 11) {
 203            cam->brightness = uvd->vpic.brightness / 11;
 204            DEBUG(1, "setting brightness to %d (%d)", cam->brightness,
 205                cam->brightness * 11);
 206            konicawc_set_value(uvd, cam->brightness, SetBrightness);
 207         }
 208
 209         DEBUG(1, "new contrast: %d", uvd->vpic.contrast);
 210         uvd->vpic.contrast = (uvd->vpic.contrast > MAX_CONTRAST) ? MAX_CONTRAST : uvd->vpic.contrast;
 211         if(cam->contrast != uvd->vpic.contrast / 11) {
 212                 cam->contrast = uvd->vpic.contrast / 11;
 213                 DEBUG(1, "setting contrast to %d (%d)", cam->contrast,
 214                     cam->contrast * 11);
 215                 konicawc_set_value(uvd, cam->contrast, SetContrast);
 216         }
 217         konicawc_camera_on(uvd);
 218 }
 219
 220
 221 static int konicawc_compress_iso(struct uvd *uvd, struct urb *dataurb, struct urb *stsurb)
 222 {
 223         char *cdata;
 224         int i, totlen = 0;
 225         unsigned char *status = stsurb->transfer_buffer;
 226         int keep = 0, discard = 0, bad = 0;
 227         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 228
 229         for (i = 0; i < dataurb->number_of_packets; i++) {
 230                 int button = cam->buttonsts;
 231                 unsigned char sts;
 232                 int n = dataurb->iso_frame_desc[i].actual_length;
 233                 int st = dataurb->iso_frame_desc[i].status;
 234                 cdata = dataurb->transfer_buffer +
 235                         dataurb->iso_frame_desc[i].offset;
 236
 237                 /* Detect and ignore errored packets */
 238                 if (st < 0) {
 239                         DEBUG(1, "Data error: packet=%d. len=%d. status=%d.",
 240                               i, n, st);
 241                         uvd->stats.iso_err_count++;
 242                         continue;
 243                 }
 244
 245                 /* Detect and ignore empty packets */
 246                 if (n <= 0) {
 247                         uvd->stats.iso_skip_count++;
 248                         continue;
 249                 }
 250
 251                 /* See what the status data said about the packet */
 252                 sts = *(status+stsurb->iso_frame_desc[i].offset);
 253
 254                 /* sts: 0x80-0xff: frame start with frame number (ie 0-7f)
 255                  * otherwise:
 256                  * bit 0 0: keep packet
 257                  *       1: drop packet (padding data)
 258                  *
 259                  * bit 4 0 button not clicked
 260                  *       1 button clicked
 261                  * button is used to `take a picture' (in software)
 262                  */
 263
 264                 if(sts < 0x80) {
 265                         button = !!(sts & 0x40);
 266                         sts &= ~0x40;
 267                 }
 268
 269                 /* work out the button status, but don't do
 270                    anything with it for now */
 271
 272                 if(button != cam->buttonsts) {
 273                         DEBUG(2, "button: %sclicked", button ? "" : "un");
 274                         cam->buttonsts = button;
 275 #ifdef CONFIG_INPUT
 276                         input_report_key(&cam->input, BTN_0, cam->buttonsts);
 277                         input_sync(&cam->input);
 278 #endif
 279                 }
 280
 281                 if(sts == 0x01) { /* drop frame */
 282                         discard++;
 283                         continue;
 284                 }
 285
 286                 if((sts > 0x01) && (sts < 0x80)) {
 287                         info("unknown status %2.2x", sts);
 288                         bad++;
 289                         continue;
 290                 }
 291                 if(!sts && cam->lastframe == -2) {
 292                         DEBUG(2, "dropping frame looking for image start");
 293                         continue;
 294                 }
 295
 296                 keep++;
 297                 if(sts & 0x80) { /* frame start */
 298                         unsigned char marker[] = { 0, 0xff, 0, 0x00 };
 299
 300                         if(cam->lastframe == -2) {
 301                                 DEBUG(2, "found initial image");
 302                                 cam->lastframe = -1;
 303                         }
 304
 305                         marker[3] = sts & 0x7F;
 306                         RingQueue_Enqueue(&uvd->dp, marker, 4);
 307                         totlen += 4;
 308                 }
 309
 310                 totlen += n;    /* Little local accounting */
 311                 RingQueue_Enqueue(&uvd->dp, cdata, n);
 312         }
 313         DEBUG(8, "finished: keep = %d discard = %d bad = %d added %d bytes",
 314                     keep, discard, bad, totlen);
 315         return totlen;
 316 }
 317
 318
 319 static void resubmit_urb(struct uvd *uvd, struct urb *urb)
 320 {
 321         int i, ret;
 322         for (i = 0; i < FRAMES_PER_DESC; i++) {
 323                 urb->iso_frame_desc[i].status = 0;
 324         }
 325         urb->dev = uvd->dev;
 326         urb->status = 0;
 327         ret = usb_submit_urb(urb, GFP_ATOMIC);
 328         DEBUG(3, "submitting urb of length %d", urb->transfer_buffer_length);
 329         if(ret)
 330                 err("usb_submit_urb error (%d)", ret);
 331
 332 }
 333
 334
 335 static void konicawc_isoc_irq(struct urb *urb, struct pt_regs *regs)
 336 {
 337         struct uvd *uvd = urb->context;
 338         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 339
 340         /* We don't want to do anything if we are about to be removed! */
 341         if (!CAMERA_IS_OPERATIONAL(uvd))
 342                 return;
 343
 344         if (!uvd->streaming) {
 345                 DEBUG(1, "Not streaming, but interrupt!");
 346                 return;
 347         }
 348
 349         DEBUG(3, "got frame %d len = %d buflen =%d", urb->start_frame, urb->actual_length, urb->transfer_buffer_length);
 350
 351         uvd->stats.urb_count++;
 352
 353         if (urb->transfer_buffer_length > 32) {
 354                 cam->last_data_urb = urb;
 355                 return;
 356         }
 357         /* Copy the data received into ring queue */
 358         if(cam->last_data_urb) {
 359                 int len = 0;
 360                 if(urb->start_frame != cam->last_data_urb->start_frame)
 361                         err("Lost sync on frames");
 362                 else if (!urb->status && !cam->last_data_urb->status)
 363                         len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);
 364
 365                 resubmit_urb(uvd, cam->last_data_urb);
 366                 resubmit_urb(uvd, urb);
 367                 cam->last_data_urb = NULL;
 368                 uvd->stats.urb_length = len;
 369                 uvd->stats.data_count += len;
 370                 if(len)
 371                         RingQueue_WakeUpInterruptible(&uvd->dp);
 372                 return;
 373         }
 374         return;
 375 }
 376
 377
 378 static int konicawc_start_data(struct uvd *uvd)
 379 {
 380         struct usb_device *dev = uvd->dev;
 381         int i, errFlag;
 382         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 383         int pktsz;
 384         struct usb_interface *intf;
 385         struct usb_host_interface *interface = NULL;
 386
 387         intf = usb_ifnum_to_if(dev, uvd->iface);
 388         if (intf)
 389                 interface = usb_altnum_to_altsetting(intf,
 390                                 spd_to_iface[cam->speed]);
 391         if (!interface)
 392                 return -ENXIO;
 393         pktsz = le16_to_cpu(interface->endpoint[1].desc.wMaxPacketSize);
 394         DEBUG(1, "pktsz = %d", pktsz);
 395         if (!CAMERA_IS_OPERATIONAL(uvd)) {
 396                 err("Camera is not operational");
 397                 return -EFAULT;
 398         }
 399         uvd->curframe = -1;
 400         konicawc_camera_on(uvd);
 401         /* Alternate interface 1 is is the biggest frame size */
 402         i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
 403         if (i < 0) {
 404                 err("usb_set_interface error");
 405                 uvd->last_error = i;
 406                 return -EBUSY;
 407         }
 408
 409         /* We double buffer the Iso lists */
 410         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 411                 int j, k;
 412                 struct urb *urb = uvd->sbuf[i].urb;
 413                 urb->dev = dev;
 414                 urb->context = uvd;
 415                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
 416                 urb->interval = 1;
 417                 urb->transfer_flags = URB_ISO_ASAP;
 418                 urb->transfer_buffer = uvd->sbuf[i].data;
 419                 urb->complete = konicawc_isoc_irq;
 420                 urb->number_of_packets = FRAMES_PER_DESC;
 421                 urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
 422                 for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
 423                         urb->iso_frame_desc[j].offset = k;
 424                         urb->iso_frame_desc[j].length = pktsz;
 425                 }
 426
 427                 urb = cam->sts_urb[i];
 428                 urb->dev = dev;
 429                 urb->context = uvd;
 430                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp-1);
 431                 urb->interval = 1;
 432                 urb->transfer_flags = URB_ISO_ASAP;
 433                 urb->transfer_buffer = cam->sts_buf[i];
 434                 urb->complete = konicawc_isoc_irq;
 435                 urb->number_of_packets = FRAMES_PER_DESC;
 436                 urb->transfer_buffer_length = FRAMES_PER_DESC;
 437                 for (j=0; j < FRAMES_PER_DESC; j++) {
 438                         urb->iso_frame_desc[j].offset = j;
 439                         urb->iso_frame_desc[j].length = 1;
 440                 }
 441         }
 442
 443         cam->last_data_urb = NULL;
 444
 445         /* Submit all URBs */
 446         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 447                 errFlag = usb_submit_urb(cam->sts_urb[i], GFP_KERNEL);
 448                 if (errFlag)
 449                         err("usb_submit_isoc(%d) ret %d", i, errFlag);
 450
 451                 errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
 452                 if (errFlag)
 453                         err ("usb_submit_isoc(%d) ret %d", i, errFlag);
 454         }
 455
 456         uvd->streaming = 1;
 457         DEBUG(1, "streaming=1 video_endp=$%02x", uvd->video_endp);
 458         return 0;
 459 }
 460
 461
 462 static void konicawc_stop_data(struct uvd *uvd)
 463 {
 464         int i, j;
 465         struct konicawc *cam;
 466
 467         if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
 468                 return;
 469
 470         konicawc_camera_off(uvd);
 471         uvd->streaming = 0;
 472         cam = (struct konicawc *)uvd->user_data;
 473         cam->last_data_urb = NULL;
 474
 475         /* Unschedule all of the iso td's */
 476         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 477                 usb_kill_urb(uvd->sbuf[i].urb);
 478                 usb_kill_urb(cam->sts_urb[i]);
 479         }
 480
 481         if (!uvd->remove_pending) {
 482                 /* Set packet size to 0 */
 483                 j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
 484                 if (j < 0) {
 485                         err("usb_set_interface() error %d.", j);
 486                         uvd->last_error = j;
 487                 }
 488         }
 489 }
 490
 491
 492 static void konicawc_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
 493 {
 494         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 495         int maxline = cam->maxline;
 496         int yplanesz = cam->yplanesz;
 497
 498         assert(frame != NULL);
 499
 500         DEBUG(5, "maxline = %d yplanesz = %d", maxline, yplanesz);
 501         DEBUG(3, "Frame state = %d", frame->scanstate);
 502
 503         if(frame->scanstate == ScanState_Scanning) {
 504                 int drop = 0;
 505                 int curframe;
 506                 int fdrops = 0;
 507                 DEBUG(3, "Searching for marker, queue len = %d", RingQueue_GetLength(&uvd->dp));
 508                 while(RingQueue_GetLength(&uvd->dp) >= 4) {
 509                         if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
 510                             (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
 511                             (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
 512                             (RING_QUEUE_PEEK(&uvd->dp, 3) < 0x80)) {
 513                                 curframe = RING_QUEUE_PEEK(&uvd->dp, 3);
 514                                 if(cam->lastframe >= 0) {
 515                                         fdrops = (0x80 + curframe - cam->lastframe) & 0x7F;
 516                                         fdrops--;
 517                                         if(fdrops) {
 518                                                 info("Dropped %d frames (%d -> %d)", fdrops,
 519                                                      cam->lastframe, curframe);
 520                                         }
 521                                 }
 522                                 cam->lastframe = curframe;
 523                                 frame->curline = 0;
 524                                 frame->scanstate = ScanState_Lines;
 525                                 RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
 526                                 break;
 527                         }
 528                         RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
 529                         drop++;
 530                 }
 531                 if(drop)
 532                         DEBUG(2, "dropped %d bytes looking for new frame", drop);
 533         }
 534
 535         if(frame->scanstate == ScanState_Scanning)
 536                 return;
 537
 538         /* Try to move data from queue into frame buffer
 539          * We get data in blocks of 384 bytes made up of:
 540          * 256 Y, 64 U, 64 V.
 541          * This needs to be written out as a Y plane, a U plane and a V plane.
 542          */
 543
 544         while ( frame->curline < maxline && (RingQueue_GetLength(&uvd->dp) >= 384)) {
 545                 /* Y */
 546                 RingQueue_Dequeue(&uvd->dp, frame->data + (frame->curline * 256), 256);
 547                 /* U */
 548                 RingQueue_Dequeue(&uvd->dp, frame->data + yplanesz + (frame->curline * 64), 64);
 549                 /* V */
 550                 RingQueue_Dequeue(&uvd->dp, frame->data + (5 * yplanesz)/4 + (frame->curline * 64), 64);
 551                 frame->seqRead_Length += 384;
 552                 frame->curline++;
 553         }
 554         /* See if we filled the frame */
 555         if (frame->curline == maxline) {
 556                 DEBUG(5, "got whole frame");
 557
 558                 frame->frameState = FrameState_Done_Hold;
 559                 frame->curline = 0;
 560                 uvd->curframe = -1;
 561                 uvd->stats.frame_num++;
 562         }
 563 }
 564
 565
 566 static int konicawc_find_fps(int size, int fps)
 567 {
 568         int i;
 569
 570         fps *= 3;
 571         DEBUG(1, "konica_find_fps: size = %d fps = %d", size, fps);
 572         if(fps <= spd_to_fps[size][0])
 573                 return 0;
 574
 575         if(fps >= spd_to_fps[size][MAX_SPEED])
 576                 return MAX_SPEED;
 577
 578         for(i = 0; i < MAX_SPEED; i++) {
 579                 if((fps >= spd_to_fps[size][i]) && (fps <= spd_to_fps[size][i+1])) {
 580                         DEBUG(2, "fps %d between %d and %d", fps, i, i+1);
 581                         if( (fps - spd_to_fps[size][i]) < (spd_to_fps[size][i+1] - fps))
 582                                 return i;
 583                         else
 584                                 return i+1;
 585                 }
 586         }
 587         return MAX_SPEED+1;
 588 }
 589
 590
 591 static int konicawc_set_video_mode(struct uvd *uvd, struct video_window *vw)
 592 {
 593         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 594         int newspeed = cam->speed;
 595         int newsize;
 596         int x = vw->width;
 597         int y = vw->height;
 598         int fps = vw->flags;
 599
 600         if(x > 0 && y > 0) {
 601                 DEBUG(2, "trying to find size %d,%d", x, y);
 602                 for(newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
 603                         if((camera_sizes[newsize].width == x) && (camera_sizes[newsize].height == y))
 604                                 break;
 605                 }
 606         } else {
 607                 newsize = cam->size;
 608         }
 609
 610         if(newsize > MAX_FRAME_SIZE) {
 611                 DEBUG(1, "couldn't find size %d,%d", x, y);
 612                 return -EINVAL;
 613         }
 614
 615         if(fps > 0) {
 616                 DEBUG(1, "trying to set fps to %d", fps);
 617                 newspeed = konicawc_find_fps(newsize, fps);
 618                 DEBUG(1, "find_fps returned %d (%d)", newspeed, spd_to_fps[newsize][newspeed]);
 619         }
 620
 621         if(newspeed > MAX_SPEED)
 622                 return -EINVAL;
 623
 624         DEBUG(1, "setting size to %d speed to %d", newsize, newspeed);
 625         if((newsize == cam->size) && (newspeed == cam->speed)) {
 626                 DEBUG(1, "Nothing to do");
 627                 return 0;
 628         }
 629         DEBUG(0, "setting to  %dx%d @ %d fps", camera_sizes[newsize].width,
 630              camera_sizes[newsize].height, spd_to_fps[newsize][newspeed]/3);
 631
 632         konicawc_stop_data(uvd);
 633         uvd->ifaceAltActive = spd_to_iface[newspeed];
 634         DEBUG(1, "new interface = %d", uvd->ifaceAltActive);
 635         cam->speed = newspeed;
 636
 637         if(cam->size != newsize) {
 638                 cam->size = newsize;
 639                 konicawc_set_camera_size(uvd);
 640         }
 641
 642         /* Flush the input queue and clear any current frame in progress */
 643
 644         RingQueue_Flush(&uvd->dp);
 645         cam->lastframe = -2;
 646         if(uvd->curframe != -1) {
 647           uvd->frame[uvd->curframe].curline = 0;
 648           uvd->frame[uvd->curframe].seqRead_Length = 0;
 649           uvd->frame[uvd->curframe].seqRead_Index = 0;
 650         }
 651
 652         konicawc_start_data(uvd);
 653         return 0;
 654 }
 655
 656
 657 static int konicawc_calculate_fps(struct uvd *uvd)
 658 {
 659         struct konicawc *cam = uvd->user_data;
 660         return spd_to_fps[cam->size][cam->speed]/3;
 661 }
 662
 663
 664 static void konicawc_configure_video(struct uvd *uvd)
 665 {
 666         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 667         u8 buf[2];
 668
 669         memset(&uvd->vpic, 0, sizeof(uvd->vpic));
 670         memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
 671
 672         RESTRICT_TO_RANGE(brightness, 0, MAX_BRIGHTNESS);
 673         RESTRICT_TO_RANGE(contrast, 0, MAX_CONTRAST);
 674         RESTRICT_TO_RANGE(saturation, 0, MAX_SATURATION);
 675         RESTRICT_TO_RANGE(sharpness, 0, MAX_SHARPNESS);
 676         RESTRICT_TO_RANGE(whitebal, 0, MAX_WHITEBAL);
 677
 678         cam->brightness = brightness / 11;
 679         cam->contrast = contrast / 11;
 680         cam->saturation = saturation / 11;
 681         cam->sharpness = sharpness / 11;
 682         cam->white_bal = whitebal / 11;
 683
 684         uvd->vpic.colour = 108;
 685         uvd->vpic.hue = 108;
 686         uvd->vpic.brightness = brightness;
 687         uvd->vpic.contrast = contrast;
 688         uvd->vpic.whiteness = whitebal;
 689         uvd->vpic.depth = 6;
 690         uvd->vpic.palette = VIDEO_PALETTE_YUV420P;
 691
 692         memset(&uvd->vcap, 0, sizeof(uvd->vcap));
 693         strcpy(uvd->vcap.name, "Konica Webcam");
 694         uvd->vcap.type = VID_TYPE_CAPTURE;
 695         uvd->vcap.channels = 1;
 696         uvd->vcap.audios = 0;
 697         uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
 698         uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
 699         uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
 700         uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
 701
 702         memset(&uvd->vchan, 0, sizeof(uvd->vchan));
 703         uvd->vchan.flags = 0 ;
 704         uvd->vchan.tuners = 0;
 705         uvd->vchan.channel = 0;
 706         uvd->vchan.type = VIDEO_TYPE_CAMERA;
 707         strcpy(uvd->vchan.name, "Camera");
 708
 709         /* Talk to device */
 710         DEBUG(1, "device init");
 711         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 712                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 713         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 714                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 715         if(konicawc_set_misc(uvd, 0x2, 0, 0xd))
 716                 DEBUG(2, "2,0,d failed");
 717         DEBUG(1, "setting initial values");
 718 }
 719
 720
 721 static int konicawc_probe(struct usb_interface *intf, const struct usb_device_id *devid)
 722 {
 723         struct usb_device *dev = interface_to_usbdev(intf);
 724         struct uvd *uvd = NULL;
 725         int ix, i, nas;
 726         int actInterface=-1, inactInterface=-1, maxPS=0;
 727         unsigned char video_ep = 0;
 728
 729         DEBUG(1, "konicawc_probe(%p)", intf);
 730
 731         /* We don't handle multi-config cameras */
 732         if (dev->descriptor.bNumConfigurations != 1)
 733                 return -ENODEV;
 734
 735         info("Konica Webcam (rev. 0x%04x)", le16_to_cpu(dev->descriptor.bcdDevice));
 736         RESTRICT_TO_RANGE(speed, 0, MAX_SPEED);
 737
 738         /* Validate found interface: must have one ISO endpoint */
 739         nas = intf->num_altsetting;
 740         if (nas != 8) {
 741                 err("Incorrect number of alternate settings (%d) for this camera!", nas);
 742                 return -ENODEV;
 743         }
 744         /* Validate all alternate settings */
 745         for (ix=0; ix < nas; ix++) {
 746                 const struct usb_host_interface *interface;
 747                 const struct usb_endpoint_descriptor *endpoint;
 748
 749                 interface = &intf->altsetting[ix];
 750                 i = interface->desc.bAlternateSetting;
 751                 if (interface->desc.bNumEndpoints != 2) {
 752                         err("Interface %d. has %u. endpoints!",
 753                             interface->desc.bInterfaceNumber,
 754                             (unsigned)(interface->desc.bNumEndpoints));
 755                         return -ENODEV;
 756                 }
 757                 endpoint = &interface->endpoint[1].desc;
 758                 DEBUG(1, "found endpoint: addr: 0x%2.2x maxps = 0x%4.4x",
 759                     endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize));
 760                 if (video_ep == 0)
 761                         video_ep = endpoint->bEndpointAddress;
 762                 else if (video_ep != endpoint->bEndpointAddress) {
 763                         err("Alternate settings have different endpoint addresses!");
 764                         return -ENODEV;
 765                 }
 766                 if ((endpoint->bmAttributes & 0x03) != 0x01) {
 767                         err("Interface %d. has non-ISO endpoint!",
 768                             interface->desc.bInterfaceNumber);
 769                         return -ENODEV;
 770                 }
 771                 if ((endpoint->bEndpointAddress & 0x80) == 0) {
 772                         err("Interface %d. has ISO OUT endpoint!",
 773                             interface->desc.bInterfaceNumber);
 774                         return -ENODEV;
 775                 }
 776                 if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
 777                         if (inactInterface < 0)
 778                                 inactInterface = i;
 779                         else {
 780                                 err("More than one inactive alt. setting!");
 781                                 return -ENODEV;
 782                         }
 783                 } else {
 784                         if (i == spd_to_iface[speed]) {
 785                                 /* This one is the requested one */
 786                                 actInterface = i;
 787                         }
 788                 }
 789                 if (le16_to_cpu(endpoint->wMaxPacketSize) > maxPS)
 790                         maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
 791         }
 792         if(actInterface == -1) {
 793                 err("Cant find required endpoint");
 794                 return -ENODEV;
 795         }
 796
 797         DEBUG(1, "Selecting requested active setting=%d. maxPS=%d.", actInterface, maxPS);
 798
 799         uvd = usbvideo_AllocateDevice(cams);
 800         if (uvd != NULL) {
 801                 struct konicawc *cam = (struct konicawc *)(uvd->user_data);
 802                 /* Here uvd is a fully allocated uvd object */
 803                 for(i = 0; i < USBVIDEO_NUMSBUF; i++) {
 804                         cam->sts_urb[i] = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
 805                         if(cam->sts_urb[i] == NULL) {
 806                                 while(i--) {
 807                                         usb_free_urb(cam->sts_urb[i]);
 808                                 }
 809                                 err("can't allocate urbs");
 810                                 return -ENOMEM;
 811                         }
 812                 }
 813                 cam->speed = speed;
 814                 RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
 815                 cam->width = camera_sizes[size].width;
 816                 cam->height = camera_sizes[size].height;
 817                 cam->size = size;
 818
 819                 uvd->flags = 0;
 820                 uvd->debug = debug;
 821                 uvd->dev = dev;
 822                 uvd->iface = intf->altsetting->desc.bInterfaceNumber;
 823                 uvd->ifaceAltInactive = inactInterface;
 824                 uvd->ifaceAltActive = actInterface;
 825                 uvd->video_endp = video_ep;
 826                 uvd->iso_packet_len = maxPS;
 827                 uvd->paletteBits = 1L << VIDEO_PALETTE_YUV420P;
 828                 uvd->defaultPalette = VIDEO_PALETTE_YUV420P;
 829                 uvd->canvas = VIDEOSIZE(320, 240);
 830                 uvd->videosize = VIDEOSIZE(cam->width, cam->height);
 831
 832                 /* Initialize konicawc specific data */
 833                 konicawc_configure_video(uvd);
 834
 835                 i = usbvideo_RegisterVideoDevice(uvd);
 836                 uvd->max_frame_size = (320 * 240 * 3)/2;
 837                 if (i != 0) {
 838                         err("usbvideo_RegisterVideoDevice() failed.");
 839                         uvd = NULL;
 840                 }
 841 #ifdef CONFIG_INPUT
 842                 /* Register input device for button */
 843                 memset(&cam->input, 0, sizeof(struct input_dev));
 844                 cam->input.name = "Konicawc snapshot button";
 845                 cam->input.private = cam;
 846                 cam->input.evbit[0] = BIT(EV_KEY);
 847                 cam->input.keybit[LONG(BTN_0)] = BIT(BTN_0);
 848                 cam->input.id.bustype = BUS_USB;
 849                 cam->input.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
 850                 cam->input.id.product = le16_to_cpu(dev->descriptor.idProduct);
 851                 cam->input.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
 852                 input_register_device(&cam->input);
 853
 854                 usb_make_path(dev, cam->input_physname, 56);
 855                 strcat(cam->input_physname, "/input0");
 856                 cam->input.phys = cam->input_physname;
 857                 info("konicawc: %s on %s\n", cam->input.name, cam->input.phys);
 858 #endif
 859         }
 860
 861         if (uvd) {
 862                 usb_set_intfdata (intf, uvd);
 863                 return 0;
 864         }
 865         return -EIO;
 866 }
 867
 868
 869 static void konicawc_free_uvd(struct uvd *uvd)
 870 {
 871         int i;
 872         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 873
 874 #ifdef CONFIG_INPUT
 875         input_unregister_device(&cam->input);
 876 #endif
 877         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 878                 usb_free_urb(cam->sts_urb[i]);
 879                 cam->sts_urb[i] = NULL;
 880         }
 881 }
 882
 883
 884 static struct usb_device_id id_table[] = {
 885         { USB_DEVICE(0x04c8, 0x0720) }, /* Intel YC 76 */
 886         { }  /* Terminating entry */
 887 };
 888
 889
 890 static int __init konicawc_init(void)
 891 {
 892         struct usbvideo_cb cbTbl;
 893         info(DRIVER_DESC " " DRIVER_VERSION);
 894         memset(&cbTbl, 0, sizeof(cbTbl));
 895         cbTbl.probe = konicawc_probe;
 896         cbTbl.setupOnOpen = konicawc_setup_on_open;
 897         cbTbl.processData = konicawc_process_isoc;
 898         cbTbl.getFPS = konicawc_calculate_fps;
 899         cbTbl.setVideoMode = konicawc_set_video_mode;
 900         cbTbl.startDataPump = konicawc_start_data;
 901         cbTbl.stopDataPump = konicawc_stop_data;
 902         cbTbl.adjustPicture = konicawc_adjust_picture;
 903         cbTbl.userFree = konicawc_free_uvd;
 904         return usbvideo_register(
 905                 &cams,
 906                 MAX_CAMERAS,
 907                 sizeof(struct konicawc),
 908                 "konicawc",
 909                 &cbTbl,
 910                 THIS_MODULE,
 911                 id_table);
 912 }
 913
 914
 915 static void __exit konicawc_cleanup(void)
 916 {
 917         usbvideo_Deregister(&cams);
 918 }
 919
 920
 921 MODULE_DEVICE_TABLE(usb, id_table);
 922
 923 MODULE_LICENSE("GPL");
 924 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
 925 MODULE_DESCRIPTION(DRIVER_DESC);
 926 module_param(speed, int, 0);
 927 MODULE_PARM_DESC(speed, "Initial speed: 0 (slowest) - 6 (fastest)");
 928 module_param(size, int, 0);
 929 MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 160x136 2: 176x144 3: 320x240");
 930 module_param(brightness, int, 0);
 931 MODULE_PARM_DESC(brightness, "Initial brightness 0 - 108");
 932 module_param(contrast, int, 0);
 933 MODULE_PARM_DESC(contrast, "Initial contrast 0 - 108");
 934 module_param(saturation, int, 0);
 935 MODULE_PARM_DESC(saturation, "Initial saturation 0 - 108");
 936 module_param(sharpness, int, 0);
 937 MODULE_PARM_DESC(sharpness, "Initial brightness 0 - 108");
 938 module_param(whitebal, int, 0);
 939 MODULE_PARM_DESC(whitebal, "Initial white balance 0 - 363");
 940
 941 #ifdef CONFIG_USB_DEBUG
 942 module_param(debug, int, S_IRUGO | S_IWUSR);
 943 MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
 944 #endif
 945
 946 module_init(konicawc_init);
 947 module_exit(konicawc_cleanup);