git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/usbvideo/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/usb/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 const 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 const 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 const 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 #ifdef CONFIG_INPUT
 221
 222 static void konicawc_register_input(struct konicawc *cam, struct usb_device *dev)
 223 {
 224         struct input_dev *input_dev;
 225         int error;
 226
 227         usb_make_path(dev, cam->input_physname, sizeof(cam->input_physname));
 228         strncat(cam->input_physname, "/input0", sizeof(cam->input_physname));
 229
 230         cam->input = input_dev = input_allocate_device();
 231         if (!input_dev) {
 232                 warn("Not enough memory for camera's input device\n");
 233                 return;
 234         }
 235
 236         input_dev->name = "Konicawc snapshot button";
 237         input_dev->phys = cam->input_physname;
 238         usb_to_input_id(dev, &input_dev->id);
 239         input_dev->dev.parent = &dev->dev;
 240
 241         input_dev->evbit[0] = BIT_MASK(EV_KEY);
 242         input_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
 243
 244         input_dev->private = cam;
 245
 246         error = input_register_device(cam->input);
 247         if (error) {
 248                 warn("Failed to register camera's input device, err: %d\n",
 249                      error);
 250                 input_free_device(cam->input);
 251                 cam->input = NULL;
 252         }
 253 }
 254
 255 static void konicawc_unregister_input(struct konicawc *cam)
 256 {
 257         if (cam->input) {
 258                 input_unregister_device(cam->input);
 259                 cam->input = NULL;
 260         }
 261 }
 262
 263 static void konicawc_report_buttonstat(struct konicawc *cam)
 264 {
 265         if (cam->input) {
 266                 input_report_key(cam->input, BTN_0, cam->buttonsts);
 267                 input_sync(cam->input);
 268         }
 269 }
 270
 271 #else
 272
 273 static inline void konicawc_register_input(struct konicawc *cam, struct usb_device *dev) { }
 274 static inline void konicawc_unregister_input(struct konicawc *cam) { }
 275 static inline void konicawc_report_buttonstat(struct konicawc *cam) { }
 276
 277 #endif /* CONFIG_INPUT */
 278
 279 static int konicawc_compress_iso(struct uvd *uvd, struct urb *dataurb, struct urb *stsurb)
 280 {
 281         char *cdata;
 282         int i, totlen = 0;
 283         unsigned char *status = stsurb->transfer_buffer;
 284         int keep = 0, discard = 0, bad = 0;
 285         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 286
 287         for (i = 0; i < dataurb->number_of_packets; i++) {
 288                 int button = cam->buttonsts;
 289                 unsigned char sts;
 290                 int n = dataurb->iso_frame_desc[i].actual_length;
 291                 int st = dataurb->iso_frame_desc[i].status;
 292                 cdata = dataurb->transfer_buffer +
 293                         dataurb->iso_frame_desc[i].offset;
 294
 295                 /* Detect and ignore errored packets */
 296                 if (st < 0) {
 297                         DEBUG(1, "Data error: packet=%d. len=%d. status=%d.",
 298                               i, n, st);
 299                         uvd->stats.iso_err_count++;
 300                         continue;
 301                 }
 302
 303                 /* Detect and ignore empty packets */
 304                 if (n <= 0) {
 305                         uvd->stats.iso_skip_count++;
 306                         continue;
 307                 }
 308
 309                 /* See what the status data said about the packet */
 310                 sts = *(status+stsurb->iso_frame_desc[i].offset);
 311
 312                 /* sts: 0x80-0xff: frame start with frame number (ie 0-7f)
 313                  * otherwise:
 314                  * bit 0 0: keep packet
 315                  *       1: drop packet (padding data)
 316                  *
 317                  * bit 4 0 button not clicked
 318                  *       1 button clicked
 319                  * button is used to `take a picture' (in software)
 320                  */
 321
 322                 if(sts < 0x80) {
 323                         button = !!(sts & 0x40);
 324                         sts &= ~0x40;
 325                 }
 326
 327                 /* work out the button status, but don't do
 328                    anything with it for now */
 329
 330                 if(button != cam->buttonsts) {
 331                         DEBUG(2, "button: %sclicked", button ? "" : "un");
 332                         cam->buttonsts = button;
 333                         konicawc_report_buttonstat(cam);
 334                 }
 335
 336                 if(sts == 0x01) { /* drop frame */
 337                         discard++;
 338                         continue;
 339                 }
 340
 341                 if((sts > 0x01) && (sts < 0x80)) {
 342                         info("unknown status %2.2x", sts);
 343                         bad++;
 344                         continue;
 345                 }
 346                 if(!sts && cam->lastframe == -2) {
 347                         DEBUG(2, "dropping frame looking for image start");
 348                         continue;
 349                 }
 350
 351                 keep++;
 352                 if(sts & 0x80) { /* frame start */
 353                         unsigned char marker[] = { 0, 0xff, 0, 0x00 };
 354
 355                         if(cam->lastframe == -2) {
 356                                 DEBUG(2, "found initial image");
 357                                 cam->lastframe = -1;
 358                         }
 359
 360                         marker[3] = sts & 0x7F;
 361                         RingQueue_Enqueue(&uvd->dp, marker, 4);
 362                         totlen += 4;
 363                 }
 364
 365                 totlen += n;    /* Little local accounting */
 366                 RingQueue_Enqueue(&uvd->dp, cdata, n);
 367         }
 368         DEBUG(8, "finished: keep = %d discard = %d bad = %d added %d bytes",
 369                     keep, discard, bad, totlen);
 370         return totlen;
 371 }
 372
 373
 374 static void resubmit_urb(struct uvd *uvd, struct urb *urb)
 375 {
 376         int i, ret;
 377         for (i = 0; i < FRAMES_PER_DESC; i++) {
 378                 urb->iso_frame_desc[i].status = 0;
 379         }
 380         urb->dev = uvd->dev;
 381         urb->status = 0;
 382         ret = usb_submit_urb(urb, GFP_ATOMIC);
 383         DEBUG(3, "submitting urb of length %d", urb->transfer_buffer_length);
 384         if(ret)
 385                 err("usb_submit_urb error (%d)", ret);
 386
 387 }
 388
 389
 390 static void konicawc_isoc_irq(struct urb *urb)
 391 {
 392         struct uvd *uvd = urb->context;
 393         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 394
 395         /* We don't want to do anything if we are about to be removed! */
 396         if (!CAMERA_IS_OPERATIONAL(uvd))
 397                 return;
 398
 399         if (!uvd->streaming) {
 400                 DEBUG(1, "Not streaming, but interrupt!");
 401                 return;
 402         }
 403
 404         DEBUG(3, "got frame %d len = %d buflen =%d", urb->start_frame, urb->actual_length, urb->transfer_buffer_length);
 405
 406         uvd->stats.urb_count++;
 407
 408         if (urb->transfer_buffer_length > 32) {
 409                 cam->last_data_urb = urb;
 410                 return;
 411         }
 412         /* Copy the data received into ring queue */
 413         if(cam->last_data_urb) {
 414                 int len = 0;
 415                 if(urb->start_frame != cam->last_data_urb->start_frame)
 416                         err("Lost sync on frames");
 417                 else if (!urb->status && !cam->last_data_urb->status)
 418                         len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);
 419
 420                 resubmit_urb(uvd, cam->last_data_urb);
 421                 resubmit_urb(uvd, urb);
 422                 cam->last_data_urb = NULL;
 423                 uvd->stats.urb_length = len;
 424                 uvd->stats.data_count += len;
 425                 if(len)
 426                         RingQueue_WakeUpInterruptible(&uvd->dp);
 427                 return;
 428         }
 429         return;
 430 }
 431
 432
 433 static int konicawc_start_data(struct uvd *uvd)
 434 {
 435         struct usb_device *dev = uvd->dev;
 436         int i, errFlag;
 437         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 438         int pktsz;
 439         struct usb_interface *intf;
 440         struct usb_host_interface *interface = NULL;
 441
 442         intf = usb_ifnum_to_if(dev, uvd->iface);
 443         if (intf)
 444                 interface = usb_altnum_to_altsetting(intf,
 445                                 spd_to_iface[cam->speed]);
 446         if (!interface)
 447                 return -ENXIO;
 448         pktsz = le16_to_cpu(interface->endpoint[1].desc.wMaxPacketSize);
 449         DEBUG(1, "pktsz = %d", pktsz);
 450         if (!CAMERA_IS_OPERATIONAL(uvd)) {
 451                 err("Camera is not operational");
 452                 return -EFAULT;
 453         }
 454         uvd->curframe = -1;
 455         konicawc_camera_on(uvd);
 456         /* Alternate interface 1 is is the biggest frame size */
 457         i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
 458         if (i < 0) {
 459                 err("usb_set_interface error");
 460                 uvd->last_error = i;
 461                 return -EBUSY;
 462         }
 463
 464         /* We double buffer the Iso lists */
 465         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 466                 int j, k;
 467                 struct urb *urb = uvd->sbuf[i].urb;
 468                 urb->dev = dev;
 469                 urb->context = uvd;
 470                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
 471                 urb->interval = 1;
 472                 urb->transfer_flags = URB_ISO_ASAP;
 473                 urb->transfer_buffer = uvd->sbuf[i].data;
 474                 urb->complete = konicawc_isoc_irq;
 475                 urb->number_of_packets = FRAMES_PER_DESC;
 476                 urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
 477                 for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
 478                         urb->iso_frame_desc[j].offset = k;
 479                         urb->iso_frame_desc[j].length = pktsz;
 480                 }
 481
 482                 urb = cam->sts_urb[i];
 483                 urb->dev = dev;
 484                 urb->context = uvd;
 485                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp-1);
 486                 urb->interval = 1;
 487                 urb->transfer_flags = URB_ISO_ASAP;
 488                 urb->transfer_buffer = cam->sts_buf[i];
 489                 urb->complete = konicawc_isoc_irq;
 490                 urb->number_of_packets = FRAMES_PER_DESC;
 491                 urb->transfer_buffer_length = FRAMES_PER_DESC;
 492                 for (j=0; j < FRAMES_PER_DESC; j++) {
 493                         urb->iso_frame_desc[j].offset = j;
 494                         urb->iso_frame_desc[j].length = 1;
 495                 }
 496         }
 497
 498         cam->last_data_urb = NULL;
 499
 500         /* Submit all URBs */
 501         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 502                 errFlag = usb_submit_urb(cam->sts_urb[i], GFP_KERNEL);
 503                 if (errFlag)
 504                         err("usb_submit_isoc(%d) ret %d", i, errFlag);
 505
 506                 errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
 507                 if (errFlag)
 508                         err ("usb_submit_isoc(%d) ret %d", i, errFlag);
 509         }
 510
 511         uvd->streaming = 1;
 512         DEBUG(1, "streaming=1 video_endp=$%02x", uvd->video_endp);
 513         return 0;
 514 }
 515
 516
 517 static void konicawc_stop_data(struct uvd *uvd)
 518 {
 519         int i, j;
 520         struct konicawc *cam;
 521
 522         if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
 523                 return;
 524
 525         konicawc_camera_off(uvd);
 526         uvd->streaming = 0;
 527         cam = (struct konicawc *)uvd->user_data;
 528         cam->last_data_urb = NULL;
 529
 530         /* Unschedule all of the iso td's */
 531         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 532                 usb_kill_urb(uvd->sbuf[i].urb);
 533                 usb_kill_urb(cam->sts_urb[i]);
 534         }
 535
 536         if (!uvd->remove_pending) {
 537                 /* Set packet size to 0 */
 538                 j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
 539                 if (j < 0) {
 540                         err("usb_set_interface() error %d.", j);
 541                         uvd->last_error = j;
 542                 }
 543         }
 544 }
 545
 546
 547 static void konicawc_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
 548 {
 549         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 550         int maxline = cam->maxline;
 551         int yplanesz = cam->yplanesz;
 552
 553         assert(frame != NULL);
 554
 555         DEBUG(5, "maxline = %d yplanesz = %d", maxline, yplanesz);
 556         DEBUG(3, "Frame state = %d", frame->scanstate);
 557
 558         if(frame->scanstate == ScanState_Scanning) {
 559                 int drop = 0;
 560                 int curframe;
 561                 int fdrops = 0;
 562                 DEBUG(3, "Searching for marker, queue len = %d", RingQueue_GetLength(&uvd->dp));
 563                 while(RingQueue_GetLength(&uvd->dp) >= 4) {
 564                         if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
 565                             (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
 566                             (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
 567                             (RING_QUEUE_PEEK(&uvd->dp, 3) < 0x80)) {
 568                                 curframe = RING_QUEUE_PEEK(&uvd->dp, 3);
 569                                 if(cam->lastframe >= 0) {
 570                                         fdrops = (0x80 + curframe - cam->lastframe) & 0x7F;
 571                                         fdrops--;
 572                                         if(fdrops) {
 573                                                 info("Dropped %d frames (%d -> %d)", fdrops,
 574                                                      cam->lastframe, curframe);
 575                                         }
 576                                 }
 577                                 cam->lastframe = curframe;
 578                                 frame->curline = 0;
 579                                 frame->scanstate = ScanState_Lines;
 580                                 RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
 581                                 break;
 582                         }
 583                         RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
 584                         drop++;
 585                 }
 586                 if(drop)
 587                         DEBUG(2, "dropped %d bytes looking for new frame", drop);
 588         }
 589
 590         if(frame->scanstate == ScanState_Scanning)
 591                 return;
 592
 593         /* Try to move data from queue into frame buffer
 594          * We get data in blocks of 384 bytes made up of:
 595          * 256 Y, 64 U, 64 V.
 596          * This needs to be written out as a Y plane, a U plane and a V plane.
 597          */
 598
 599         while ( frame->curline < maxline && (RingQueue_GetLength(&uvd->dp) >= 384)) {
 600                 /* Y */
 601                 RingQueue_Dequeue(&uvd->dp, frame->data + (frame->curline * 256), 256);
 602                 /* U */
 603                 RingQueue_Dequeue(&uvd->dp, frame->data + yplanesz + (frame->curline * 64), 64);
 604                 /* V */
 605                 RingQueue_Dequeue(&uvd->dp, frame->data + (5 * yplanesz)/4 + (frame->curline * 64), 64);
 606                 frame->seqRead_Length += 384;
 607                 frame->curline++;
 608         }
 609         /* See if we filled the frame */
 610         if (frame->curline == maxline) {
 611                 DEBUG(5, "got whole frame");
 612
 613                 frame->frameState = FrameState_Done_Hold;
 614                 frame->curline = 0;
 615                 uvd->curframe = -1;
 616                 uvd->stats.frame_num++;
 617         }
 618 }
 619
 620
 621 static int konicawc_find_fps(int size, int fps)
 622 {
 623         int i;
 624
 625         fps *= 3;
 626         DEBUG(1, "konica_find_fps: size = %d fps = %d", size, fps);
 627         if(fps <= spd_to_fps[size][0])
 628                 return 0;
 629
 630         if(fps >= spd_to_fps[size][MAX_SPEED])
 631                 return MAX_SPEED;
 632
 633         for(i = 0; i < MAX_SPEED; i++) {
 634                 if((fps >= spd_to_fps[size][i]) && (fps <= spd_to_fps[size][i+1])) {
 635                         DEBUG(2, "fps %d between %d and %d", fps, i, i+1);
 636                         if( (fps - spd_to_fps[size][i]) < (spd_to_fps[size][i+1] - fps))
 637                                 return i;
 638                         else
 639                                 return i+1;
 640                 }
 641         }
 642         return MAX_SPEED+1;
 643 }
 644
 645
 646 static int konicawc_set_video_mode(struct uvd *uvd, struct video_window *vw)
 647 {
 648         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 649         int newspeed = cam->speed;
 650         int newsize;
 651         int x = vw->width;
 652         int y = vw->height;
 653         int fps = vw->flags;
 654
 655         if(x > 0 && y > 0) {
 656                 DEBUG(2, "trying to find size %d,%d", x, y);
 657                 for(newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
 658                         if((camera_sizes[newsize].width == x) && (camera_sizes[newsize].height == y))
 659                                 break;
 660                 }
 661         } else {
 662                 newsize = cam->size;
 663         }
 664
 665         if(newsize > MAX_FRAME_SIZE) {
 666                 DEBUG(1, "couldn't find size %d,%d", x, y);
 667                 return -EINVAL;
 668         }
 669
 670         if(fps > 0) {
 671                 DEBUG(1, "trying to set fps to %d", fps);
 672                 newspeed = konicawc_find_fps(newsize, fps);
 673                 DEBUG(1, "find_fps returned %d (%d)", newspeed, spd_to_fps[newsize][newspeed]);
 674         }
 675
 676         if(newspeed > MAX_SPEED)
 677                 return -EINVAL;
 678
 679         DEBUG(1, "setting size to %d speed to %d", newsize, newspeed);
 680         if((newsize == cam->size) && (newspeed == cam->speed)) {
 681                 DEBUG(1, "Nothing to do");
 682                 return 0;
 683         }
 684         DEBUG(0, "setting to  %dx%d @ %d fps", camera_sizes[newsize].width,
 685              camera_sizes[newsize].height, spd_to_fps[newsize][newspeed]/3);
 686
 687         konicawc_stop_data(uvd);
 688         uvd->ifaceAltActive = spd_to_iface[newspeed];
 689         DEBUG(1, "new interface = %d", uvd->ifaceAltActive);
 690         cam->speed = newspeed;
 691
 692         if(cam->size != newsize) {
 693                 cam->size = newsize;
 694                 konicawc_set_camera_size(uvd);
 695         }
 696
 697         /* Flush the input queue and clear any current frame in progress */
 698
 699         RingQueue_Flush(&uvd->dp);
 700         cam->lastframe = -2;
 701         if(uvd->curframe != -1) {
 702                 uvd->frame[uvd->curframe].curline = 0;
 703                 uvd->frame[uvd->curframe].seqRead_Length = 0;
 704                 uvd->frame[uvd->curframe].seqRead_Index = 0;
 705         }
 706
 707         konicawc_start_data(uvd);
 708         return 0;
 709 }
 710
 711
 712 static int konicawc_calculate_fps(struct uvd *uvd)
 713 {
 714         struct konicawc *cam = uvd->user_data;
 715         return spd_to_fps[cam->size][cam->speed]/3;
 716 }
 717
 718
 719 static void konicawc_configure_video(struct uvd *uvd)
 720 {
 721         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 722         u8 buf[2];
 723
 724         memset(&uvd->vpic, 0, sizeof(uvd->vpic));
 725         memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
 726
 727         RESTRICT_TO_RANGE(brightness, 0, MAX_BRIGHTNESS);
 728         RESTRICT_TO_RANGE(contrast, 0, MAX_CONTRAST);
 729         RESTRICT_TO_RANGE(saturation, 0, MAX_SATURATION);
 730         RESTRICT_TO_RANGE(sharpness, 0, MAX_SHARPNESS);
 731         RESTRICT_TO_RANGE(whitebal, 0, MAX_WHITEBAL);
 732
 733         cam->brightness = brightness / 11;
 734         cam->contrast = contrast / 11;
 735         cam->saturation = saturation / 11;
 736         cam->sharpness = sharpness / 11;
 737         cam->white_bal = whitebal / 11;
 738
 739         uvd->vpic.colour = 108;
 740         uvd->vpic.hue = 108;
 741         uvd->vpic.brightness = brightness;
 742         uvd->vpic.contrast = contrast;
 743         uvd->vpic.whiteness = whitebal;
 744         uvd->vpic.depth = 6;
 745         uvd->vpic.palette = VIDEO_PALETTE_YUV420P;
 746
 747         memset(&uvd->vcap, 0, sizeof(uvd->vcap));
 748         strcpy(uvd->vcap.name, "Konica Webcam");
 749         uvd->vcap.type = VID_TYPE_CAPTURE;
 750         uvd->vcap.channels = 1;
 751         uvd->vcap.audios = 0;
 752         uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
 753         uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
 754         uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
 755         uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
 756
 757         memset(&uvd->vchan, 0, sizeof(uvd->vchan));
 758         uvd->vchan.flags = 0 ;
 759         uvd->vchan.tuners = 0;
 760         uvd->vchan.channel = 0;
 761         uvd->vchan.type = VIDEO_TYPE_CAMERA;
 762         strcpy(uvd->vchan.name, "Camera");
 763
 764         /* Talk to device */
 765         DEBUG(1, "device init");
 766         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 767                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 768         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 769                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 770         if(konicawc_set_misc(uvd, 0x2, 0, 0xd))
 771                 DEBUG(2, "2,0,d failed");
 772         DEBUG(1, "setting initial values");
 773 }
 774
 775 static int konicawc_probe(struct usb_interface *intf, const struct usb_device_id *devid)
 776 {
 777         struct usb_device *dev = interface_to_usbdev(intf);
 778         struct uvd *uvd = NULL;
 779         int ix, i, nas;
 780         int actInterface=-1, inactInterface=-1, maxPS=0;
 781         unsigned char video_ep = 0;
 782
 783         DEBUG(1, "konicawc_probe(%p)", intf);
 784
 785         /* We don't handle multi-config cameras */
 786         if (dev->descriptor.bNumConfigurations != 1)
 787                 return -ENODEV;
 788
 789         info("Konica Webcam (rev. 0x%04x)", le16_to_cpu(dev->descriptor.bcdDevice));
 790         RESTRICT_TO_RANGE(speed, 0, MAX_SPEED);
 791
 792         /* Validate found interface: must have one ISO endpoint */
 793         nas = intf->num_altsetting;
 794         if (nas != 8) {
 795                 err("Incorrect number of alternate settings (%d) for this camera!", nas);
 796                 return -ENODEV;
 797         }
 798         /* Validate all alternate settings */
 799         for (ix=0; ix < nas; ix++) {
 800                 const struct usb_host_interface *interface;
 801                 const struct usb_endpoint_descriptor *endpoint;
 802
 803                 interface = &intf->altsetting[ix];
 804                 i = interface->desc.bAlternateSetting;
 805                 if (interface->desc.bNumEndpoints != 2) {
 806                         err("Interface %d. has %u. endpoints!",
 807                             interface->desc.bInterfaceNumber,
 808                             (unsigned)(interface->desc.bNumEndpoints));
 809                         return -ENODEV;
 810                 }
 811                 endpoint = &interface->endpoint[1].desc;
 812                 DEBUG(1, "found endpoint: addr: 0x%2.2x maxps = 0x%4.4x",
 813                     endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize));
 814                 if (video_ep == 0)
 815                         video_ep = endpoint->bEndpointAddress;
 816                 else if (video_ep != endpoint->bEndpointAddress) {
 817                         err("Alternate settings have different endpoint addresses!");
 818                         return -ENODEV;
 819                 }
 820                 if ((endpoint->bmAttributes & 0x03) != 0x01) {
 821                         err("Interface %d. has non-ISO endpoint!",
 822                             interface->desc.bInterfaceNumber);
 823                         return -ENODEV;
 824                 }
 825                 if ((endpoint->bEndpointAddress & 0x80) == 0) {
 826                         err("Interface %d. has ISO OUT endpoint!",
 827                             interface->desc.bInterfaceNumber);
 828                         return -ENODEV;
 829                 }
 830                 if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
 831                         if (inactInterface < 0)
 832                                 inactInterface = i;
 833                         else {
 834                                 err("More than one inactive alt. setting!");
 835                                 return -ENODEV;
 836                         }
 837                 } else {
 838                         if (i == spd_to_iface[speed]) {
 839                                 /* This one is the requested one */
 840                                 actInterface = i;
 841                         }
 842                 }
 843                 if (le16_to_cpu(endpoint->wMaxPacketSize) > maxPS)
 844                         maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
 845         }
 846         if(actInterface == -1) {
 847                 err("Cant find required endpoint");
 848                 return -ENODEV;
 849         }
 850
 851         DEBUG(1, "Selecting requested active setting=%d. maxPS=%d.", actInterface, maxPS);
 852
 853         uvd = usbvideo_AllocateDevice(cams);
 854         if (uvd != NULL) {
 855                 struct konicawc *cam = (struct konicawc *)(uvd->user_data);
 856                 /* Here uvd is a fully allocated uvd object */
 857                 for(i = 0; i < USBVIDEO_NUMSBUF; i++) {
 858                         cam->sts_urb[i] = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
 859                         if(cam->sts_urb[i] == NULL) {
 860                                 while(i--) {
 861                                         usb_free_urb(cam->sts_urb[i]);
 862                                 }
 863                                 err("can't allocate urbs");
 864                                 return -ENOMEM;
 865                         }
 866                 }
 867                 cam->speed = speed;
 868                 RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
 869                 cam->width = camera_sizes[size].width;
 870                 cam->height = camera_sizes[size].height;
 871                 cam->size = size;
 872
 873                 uvd->flags = 0;
 874                 uvd->debug = debug;
 875                 uvd->dev = dev;
 876                 uvd->iface = intf->altsetting->desc.bInterfaceNumber;
 877                 uvd->ifaceAltInactive = inactInterface;
 878                 uvd->ifaceAltActive = actInterface;
 879                 uvd->video_endp = video_ep;
 880                 uvd->iso_packet_len = maxPS;
 881                 uvd->paletteBits = 1L << VIDEO_PALETTE_YUV420P;
 882                 uvd->defaultPalette = VIDEO_PALETTE_YUV420P;
 883                 uvd->canvas = VIDEOSIZE(320, 240);
 884                 uvd->videosize = VIDEOSIZE(cam->width, cam->height);
 885
 886                 /* Initialize konicawc specific data */
 887                 konicawc_configure_video(uvd);
 888
 889                 i = usbvideo_RegisterVideoDevice(uvd);
 890                 uvd->max_frame_size = (320 * 240 * 3)/2;
 891                 if (i != 0) {
 892                         err("usbvideo_RegisterVideoDevice() failed.");
 893                         uvd = NULL;
 894                 }
 895
 896                 konicawc_register_input(cam, dev);
 897         }
 898
 899         if (uvd) {
 900                 usb_set_intfdata (intf, uvd);
 901                 return 0;
 902         }
 903         return -EIO;
 904 }
 905
 906
 907 static void konicawc_free_uvd(struct uvd *uvd)
 908 {
 909         int i;
 910         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 911
 912         konicawc_unregister_input(cam);
 913
 914         for (i = 0; i < USBVIDEO_NUMSBUF; i++) {
 915                 usb_free_urb(cam->sts_urb[i]);
 916                 cam->sts_urb[i] = NULL;
 917         }
 918 }
 919
 920
 921 static struct usb_device_id id_table[] = {
 922         { USB_DEVICE(0x04c8, 0x0720) }, /* Intel YC 76 */
 923         { }  /* Terminating entry */
 924 };
 925
 926
 927 static int __init konicawc_init(void)
 928 {
 929         struct usbvideo_cb cbTbl;
 930         info(DRIVER_DESC " " DRIVER_VERSION);
 931         memset(&cbTbl, 0, sizeof(cbTbl));
 932         cbTbl.probe = konicawc_probe;
 933         cbTbl.setupOnOpen = konicawc_setup_on_open;
 934         cbTbl.processData = konicawc_process_isoc;
 935         cbTbl.getFPS = konicawc_calculate_fps;
 936         cbTbl.setVideoMode = konicawc_set_video_mode;
 937         cbTbl.startDataPump = konicawc_start_data;
 938         cbTbl.stopDataPump = konicawc_stop_data;
 939         cbTbl.adjustPicture = konicawc_adjust_picture;
 940         cbTbl.userFree = konicawc_free_uvd;
 941         return usbvideo_register(
 942                 &cams,
 943                 MAX_CAMERAS,
 944                 sizeof(struct konicawc),
 945                 "konicawc",
 946                 &cbTbl,
 947                 THIS_MODULE,
 948                 id_table);
 949 }
 950
 951
 952 static void __exit konicawc_cleanup(void)
 953 {
 954         usbvideo_Deregister(&cams);
 955 }
 956
 957
 958 MODULE_DEVICE_TABLE(usb, id_table);
 959
 960 MODULE_LICENSE("GPL");
 961 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
 962 MODULE_DESCRIPTION(DRIVER_DESC);
 963 module_param(speed, int, 0);
 964 MODULE_PARM_DESC(speed, "Initial speed: 0 (slowest) - 6 (fastest)");
 965 module_param(size, int, 0);
 966 MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 160x136 2: 176x144 3: 320x240");
 967 module_param(brightness, int, 0);
 968 MODULE_PARM_DESC(brightness, "Initial brightness 0 - 108");
 969 module_param(contrast, int, 0);
 970 MODULE_PARM_DESC(contrast, "Initial contrast 0 - 108");
 971 module_param(saturation, int, 0);
 972 MODULE_PARM_DESC(saturation, "Initial saturation 0 - 108");
 973 module_param(sharpness, int, 0);
 974 MODULE_PARM_DESC(sharpness, "Initial brightness 0 - 108");
 975 module_param(whitebal, int, 0);
 976 MODULE_PARM_DESC(whitebal, "Initial white balance 0 - 363");
 977
 978 #ifdef CONFIG_USB_DEBUG
 979 module_param(debug, int, S_IRUGO | S_IWUSR);
 980 MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
 981 #endif
 982
 983 module_init(konicawc_init);
 984 module_exit(konicawc_cleanup);