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", __func__ , ## arg); \
  61         }
  62 #else
  63 #define DEBUG(n, arg...)
  64 static const int debug;
  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         error = input_register_device(cam->input);
 245         if (error) {
 246                 warn("Failed to register camera's input device, err: %d\n",
 247                      error);
 248                 input_free_device(cam->input);
 249                 cam->input = NULL;
 250         }
 251 }
 252
 253 static void konicawc_unregister_input(struct konicawc *cam)
 254 {
 255         if (cam->input) {
 256                 input_unregister_device(cam->input);
 257                 cam->input = NULL;
 258         }
 259 }
 260
 261 static void konicawc_report_buttonstat(struct konicawc *cam)
 262 {
 263         if (cam->input) {
 264                 input_report_key(cam->input, BTN_0, cam->buttonsts);
 265                 input_sync(cam->input);
 266         }
 267 }
 268
 269 #else
 270
 271 static inline void konicawc_register_input(struct konicawc *cam, struct usb_device *dev) { }
 272 static inline void konicawc_unregister_input(struct konicawc *cam) { }
 273 static inline void konicawc_report_buttonstat(struct konicawc *cam) { }
 274
 275 #endif /* CONFIG_INPUT */
 276
 277 static int konicawc_compress_iso(struct uvd *uvd, struct urb *dataurb, struct urb *stsurb)
 278 {
 279         char *cdata;
 280         int i, totlen = 0;
 281         unsigned char *status = stsurb->transfer_buffer;
 282         int keep = 0, discard = 0, bad = 0;
 283         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 284
 285         for (i = 0; i < dataurb->number_of_packets; i++) {
 286                 int button = cam->buttonsts;
 287                 unsigned char sts;
 288                 int n = dataurb->iso_frame_desc[i].actual_length;
 289                 int st = dataurb->iso_frame_desc[i].status;
 290                 cdata = dataurb->transfer_buffer +
 291                         dataurb->iso_frame_desc[i].offset;
 292
 293                 /* Detect and ignore errored packets */
 294                 if (st < 0) {
 295                         DEBUG(1, "Data error: packet=%d. len=%d. status=%d.",
 296                               i, n, st);
 297                         uvd->stats.iso_err_count++;
 298                         continue;
 299                 }
 300
 301                 /* Detect and ignore empty packets */
 302                 if (n <= 0) {
 303                         uvd->stats.iso_skip_count++;
 304                         continue;
 305                 }
 306
 307                 /* See what the status data said about the packet */
 308                 sts = *(status+stsurb->iso_frame_desc[i].offset);
 309
 310                 /* sts: 0x80-0xff: frame start with frame number (ie 0-7f)
 311                  * otherwise:
 312                  * bit 0 0: keep packet
 313                  *       1: drop packet (padding data)
 314                  *
 315                  * bit 4 0 button not clicked
 316                  *       1 button clicked
 317                  * button is used to `take a picture' (in software)
 318                  */
 319
 320                 if(sts < 0x80) {
 321                         button = !!(sts & 0x40);
 322                         sts &= ~0x40;
 323                 }
 324
 325                 /* work out the button status, but don't do
 326                    anything with it for now */
 327
 328                 if(button != cam->buttonsts) {
 329                         DEBUG(2, "button: %sclicked", button ? "" : "un");
 330                         cam->buttonsts = button;
 331                         konicawc_report_buttonstat(cam);
 332                 }
 333
 334                 if(sts == 0x01) { /* drop frame */
 335                         discard++;
 336                         continue;
 337                 }
 338
 339                 if((sts > 0x01) && (sts < 0x80)) {
 340                         info("unknown status %2.2x", sts);
 341                         bad++;
 342                         continue;
 343                 }
 344                 if(!sts && cam->lastframe == -2) {
 345                         DEBUG(2, "dropping frame looking for image start");
 346                         continue;
 347                 }
 348
 349                 keep++;
 350                 if(sts & 0x80) { /* frame start */
 351                         unsigned char marker[] = { 0, 0xff, 0, 0x00 };
 352
 353                         if(cam->lastframe == -2) {
 354                                 DEBUG(2, "found initial image");
 355                                 cam->lastframe = -1;
 356                         }
 357
 358                         marker[3] = sts & 0x7F;
 359                         RingQueue_Enqueue(&uvd->dp, marker, 4);
 360                         totlen += 4;
 361                 }
 362
 363                 totlen += n;    /* Little local accounting */
 364                 RingQueue_Enqueue(&uvd->dp, cdata, n);
 365         }
 366         DEBUG(8, "finished: keep = %d discard = %d bad = %d added %d bytes",
 367                     keep, discard, bad, totlen);
 368         return totlen;
 369 }
 370
 371
 372 static void resubmit_urb(struct uvd *uvd, struct urb *urb)
 373 {
 374         int i, ret;
 375         for (i = 0; i < FRAMES_PER_DESC; i++) {
 376                 urb->iso_frame_desc[i].status = 0;
 377         }
 378         urb->dev = uvd->dev;
 379         urb->status = 0;
 380         ret = usb_submit_urb(urb, GFP_ATOMIC);
 381         DEBUG(3, "submitting urb of length %d", urb->transfer_buffer_length);
 382         if(ret)
 383                 err("usb_submit_urb error (%d)", ret);
 384
 385 }
 386
 387
 388 static void konicawc_isoc_irq(struct urb *urb)
 389 {
 390         struct uvd *uvd = urb->context;
 391         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 392
 393         /* We don't want to do anything if we are about to be removed! */
 394         if (!CAMERA_IS_OPERATIONAL(uvd))
 395                 return;
 396
 397         if (!uvd->streaming) {
 398                 DEBUG(1, "Not streaming, but interrupt!");
 399                 return;
 400         }
 401
 402         DEBUG(3, "got frame %d len = %d buflen =%d", urb->start_frame, urb->actual_length, urb->transfer_buffer_length);
 403
 404         uvd->stats.urb_count++;
 405
 406         if (urb->transfer_buffer_length > 32) {
 407                 cam->last_data_urb = urb;
 408                 return;
 409         }
 410         /* Copy the data received into ring queue */
 411         if(cam->last_data_urb) {
 412                 int len = 0;
 413                 if(urb->start_frame != cam->last_data_urb->start_frame)
 414                         err("Lost sync on frames");
 415                 else if (!urb->status && !cam->last_data_urb->status)
 416                         len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);
 417
 418                 resubmit_urb(uvd, cam->last_data_urb);
 419                 resubmit_urb(uvd, urb);
 420                 cam->last_data_urb = NULL;
 421                 uvd->stats.urb_length = len;
 422                 uvd->stats.data_count += len;
 423                 if(len)
 424                         RingQueue_WakeUpInterruptible(&uvd->dp);
 425                 return;
 426         }
 427         return;
 428 }
 429
 430
 431 static int konicawc_start_data(struct uvd *uvd)
 432 {
 433         struct usb_device *dev = uvd->dev;
 434         int i, errFlag;
 435         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 436         int pktsz;
 437         struct usb_interface *intf;
 438         struct usb_host_interface *interface = NULL;
 439
 440         intf = usb_ifnum_to_if(dev, uvd->iface);
 441         if (intf)
 442                 interface = usb_altnum_to_altsetting(intf,
 443                                 spd_to_iface[cam->speed]);
 444         if (!interface)
 445                 return -ENXIO;
 446         pktsz = le16_to_cpu(interface->endpoint[1].desc.wMaxPacketSize);
 447         DEBUG(1, "pktsz = %d", pktsz);
 448         if (!CAMERA_IS_OPERATIONAL(uvd)) {
 449                 err("Camera is not operational");
 450                 return -EFAULT;
 451         }
 452         uvd->curframe = -1;
 453         konicawc_camera_on(uvd);
 454         /* Alternate interface 1 is is the biggest frame size */
 455         i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
 456         if (i < 0) {
 457                 err("usb_set_interface error");
 458                 uvd->last_error = i;
 459                 return -EBUSY;
 460         }
 461
 462         /* We double buffer the Iso lists */
 463         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 464                 int j, k;
 465                 struct urb *urb = uvd->sbuf[i].urb;
 466                 urb->dev = dev;
 467                 urb->context = uvd;
 468                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
 469                 urb->interval = 1;
 470                 urb->transfer_flags = URB_ISO_ASAP;
 471                 urb->transfer_buffer = uvd->sbuf[i].data;
 472                 urb->complete = konicawc_isoc_irq;
 473                 urb->number_of_packets = FRAMES_PER_DESC;
 474                 urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
 475                 for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
 476                         urb->iso_frame_desc[j].offset = k;
 477                         urb->iso_frame_desc[j].length = pktsz;
 478                 }
 479
 480                 urb = cam->sts_urb[i];
 481                 urb->dev = dev;
 482                 urb->context = uvd;
 483                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp-1);
 484                 urb->interval = 1;
 485                 urb->transfer_flags = URB_ISO_ASAP;
 486                 urb->transfer_buffer = cam->sts_buf[i];
 487                 urb->complete = konicawc_isoc_irq;
 488                 urb->number_of_packets = FRAMES_PER_DESC;
 489                 urb->transfer_buffer_length = FRAMES_PER_DESC;
 490                 for (j=0; j < FRAMES_PER_DESC; j++) {
 491                         urb->iso_frame_desc[j].offset = j;
 492                         urb->iso_frame_desc[j].length = 1;
 493                 }
 494         }
 495
 496         cam->last_data_urb = NULL;
 497
 498         /* Submit all URBs */
 499         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 500                 errFlag = usb_submit_urb(cam->sts_urb[i], GFP_KERNEL);
 501                 if (errFlag)
 502                         err("usb_submit_isoc(%d) ret %d", i, errFlag);
 503
 504                 errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
 505                 if (errFlag)
 506                         err ("usb_submit_isoc(%d) ret %d", i, errFlag);
 507         }
 508
 509         uvd->streaming = 1;
 510         DEBUG(1, "streaming=1 video_endp=$%02x", uvd->video_endp);
 511         return 0;
 512 }
 513
 514
 515 static void konicawc_stop_data(struct uvd *uvd)
 516 {
 517         int i, j;
 518         struct konicawc *cam;
 519
 520         if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
 521                 return;
 522
 523         konicawc_camera_off(uvd);
 524         uvd->streaming = 0;
 525         cam = (struct konicawc *)uvd->user_data;
 526         cam->last_data_urb = NULL;
 527
 528         /* Unschedule all of the iso td's */
 529         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 530                 usb_kill_urb(uvd->sbuf[i].urb);
 531                 usb_kill_urb(cam->sts_urb[i]);
 532         }
 533
 534         if (!uvd->remove_pending) {
 535                 /* Set packet size to 0 */
 536                 j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
 537                 if (j < 0) {
 538                         err("usb_set_interface() error %d.", j);
 539                         uvd->last_error = j;
 540                 }
 541         }
 542 }
 543
 544
 545 static void konicawc_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
 546 {
 547         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 548         int maxline = cam->maxline;
 549         int yplanesz = cam->yplanesz;
 550
 551         assert(frame != NULL);
 552
 553         DEBUG(5, "maxline = %d yplanesz = %d", maxline, yplanesz);
 554         DEBUG(3, "Frame state = %d", frame->scanstate);
 555
 556         if(frame->scanstate == ScanState_Scanning) {
 557                 int drop = 0;
 558                 int curframe;
 559                 int fdrops = 0;
 560                 DEBUG(3, "Searching for marker, queue len = %d", RingQueue_GetLength(&uvd->dp));
 561                 while(RingQueue_GetLength(&uvd->dp) >= 4) {
 562                         if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
 563                             (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
 564                             (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
 565                             (RING_QUEUE_PEEK(&uvd->dp, 3) < 0x80)) {
 566                                 curframe = RING_QUEUE_PEEK(&uvd->dp, 3);
 567                                 if(cam->lastframe >= 0) {
 568                                         fdrops = (0x80 + curframe - cam->lastframe) & 0x7F;
 569                                         fdrops--;
 570                                         if(fdrops) {
 571                                                 info("Dropped %d frames (%d -> %d)", fdrops,
 572                                                      cam->lastframe, curframe);
 573                                         }
 574                                 }
 575                                 cam->lastframe = curframe;
 576                                 frame->curline = 0;
 577                                 frame->scanstate = ScanState_Lines;
 578                                 RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
 579                                 break;
 580                         }
 581                         RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
 582                         drop++;
 583                 }
 584                 if(drop)
 585                         DEBUG(2, "dropped %d bytes looking for new frame", drop);
 586         }
 587
 588         if(frame->scanstate == ScanState_Scanning)
 589                 return;
 590
 591         /* Try to move data from queue into frame buffer
 592          * We get data in blocks of 384 bytes made up of:
 593          * 256 Y, 64 U, 64 V.
 594          * This needs to be written out as a Y plane, a U plane and a V plane.
 595          */
 596
 597         while ( frame->curline < maxline && (RingQueue_GetLength(&uvd->dp) >= 384)) {
 598                 /* Y */
 599                 RingQueue_Dequeue(&uvd->dp, frame->data + (frame->curline * 256), 256);
 600                 /* U */
 601                 RingQueue_Dequeue(&uvd->dp, frame->data + yplanesz + (frame->curline * 64), 64);
 602                 /* V */
 603                 RingQueue_Dequeue(&uvd->dp, frame->data + (5 * yplanesz)/4 + (frame->curline * 64), 64);
 604                 frame->seqRead_Length += 384;
 605                 frame->curline++;
 606         }
 607         /* See if we filled the frame */
 608         if (frame->curline == maxline) {
 609                 DEBUG(5, "got whole frame");
 610
 611                 frame->frameState = FrameState_Done_Hold;
 612                 frame->curline = 0;
 613                 uvd->curframe = -1;
 614                 uvd->stats.frame_num++;
 615         }
 616 }
 617
 618
 619 static int konicawc_find_fps(int size, int fps)
 620 {
 621         int i;
 622
 623         fps *= 3;
 624         DEBUG(1, "konica_find_fps: size = %d fps = %d", size, fps);
 625         if(fps <= spd_to_fps[size][0])
 626                 return 0;
 627
 628         if(fps >= spd_to_fps[size][MAX_SPEED])
 629                 return MAX_SPEED;
 630
 631         for(i = 0; i < MAX_SPEED; i++) {
 632                 if((fps >= spd_to_fps[size][i]) && (fps <= spd_to_fps[size][i+1])) {
 633                         DEBUG(2, "fps %d between %d and %d", fps, i, i+1);
 634                         if( (fps - spd_to_fps[size][i]) < (spd_to_fps[size][i+1] - fps))
 635                                 return i;
 636                         else
 637                                 return i+1;
 638                 }
 639         }
 640         return MAX_SPEED+1;
 641 }
 642
 643
 644 static int konicawc_set_video_mode(struct uvd *uvd, struct video_window *vw)
 645 {
 646         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 647         int newspeed = cam->speed;
 648         int newsize;
 649         int x = vw->width;
 650         int y = vw->height;
 651         int fps = vw->flags;
 652
 653         if(x > 0 && y > 0) {
 654                 DEBUG(2, "trying to find size %d,%d", x, y);
 655                 for(newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
 656                         if((camera_sizes[newsize].width == x) && (camera_sizes[newsize].height == y))
 657                                 break;
 658                 }
 659         } else {
 660                 newsize = cam->size;
 661         }
 662
 663         if(newsize > MAX_FRAME_SIZE) {
 664                 DEBUG(1, "couldn't find size %d,%d", x, y);
 665                 return -EINVAL;
 666         }
 667
 668         if(fps > 0) {
 669                 DEBUG(1, "trying to set fps to %d", fps);
 670                 newspeed = konicawc_find_fps(newsize, fps);
 671                 DEBUG(1, "find_fps returned %d (%d)", newspeed, spd_to_fps[newsize][newspeed]);
 672         }
 673
 674         if(newspeed > MAX_SPEED)
 675                 return -EINVAL;
 676
 677         DEBUG(1, "setting size to %d speed to %d", newsize, newspeed);
 678         if((newsize == cam->size) && (newspeed == cam->speed)) {
 679                 DEBUG(1, "Nothing to do");
 680                 return 0;
 681         }
 682         DEBUG(0, "setting to  %dx%d @ %d fps", camera_sizes[newsize].width,
 683              camera_sizes[newsize].height, spd_to_fps[newsize][newspeed]/3);
 684
 685         konicawc_stop_data(uvd);
 686         uvd->ifaceAltActive = spd_to_iface[newspeed];
 687         DEBUG(1, "new interface = %d", uvd->ifaceAltActive);
 688         cam->speed = newspeed;
 689
 690         if(cam->size != newsize) {
 691                 cam->size = newsize;
 692                 konicawc_set_camera_size(uvd);
 693         }
 694
 695         /* Flush the input queue and clear any current frame in progress */
 696
 697         RingQueue_Flush(&uvd->dp);
 698         cam->lastframe = -2;
 699         if(uvd->curframe != -1) {
 700                 uvd->frame[uvd->curframe].curline = 0;
 701                 uvd->frame[uvd->curframe].seqRead_Length = 0;
 702                 uvd->frame[uvd->curframe].seqRead_Index = 0;
 703         }
 704
 705         konicawc_start_data(uvd);
 706         return 0;
 707 }
 708
 709
 710 static int konicawc_calculate_fps(struct uvd *uvd)
 711 {
 712         struct konicawc *cam = uvd->user_data;
 713         return spd_to_fps[cam->size][cam->speed]/3;
 714 }
 715
 716
 717 static void konicawc_configure_video(struct uvd *uvd)
 718 {
 719         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 720         u8 buf[2];
 721
 722         memset(&uvd->vpic, 0, sizeof(uvd->vpic));
 723         memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
 724
 725         RESTRICT_TO_RANGE(brightness, 0, MAX_BRIGHTNESS);
 726         RESTRICT_TO_RANGE(contrast, 0, MAX_CONTRAST);
 727         RESTRICT_TO_RANGE(saturation, 0, MAX_SATURATION);
 728         RESTRICT_TO_RANGE(sharpness, 0, MAX_SHARPNESS);
 729         RESTRICT_TO_RANGE(whitebal, 0, MAX_WHITEBAL);
 730
 731         cam->brightness = brightness / 11;
 732         cam->contrast = contrast / 11;
 733         cam->saturation = saturation / 11;
 734         cam->sharpness = sharpness / 11;
 735         cam->white_bal = whitebal / 11;
 736
 737         uvd->vpic.colour = 108;
 738         uvd->vpic.hue = 108;
 739         uvd->vpic.brightness = brightness;
 740         uvd->vpic.contrast = contrast;
 741         uvd->vpic.whiteness = whitebal;
 742         uvd->vpic.depth = 6;
 743         uvd->vpic.palette = VIDEO_PALETTE_YUV420P;
 744
 745         memset(&uvd->vcap, 0, sizeof(uvd->vcap));
 746         strcpy(uvd->vcap.name, "Konica Webcam");
 747         uvd->vcap.type = VID_TYPE_CAPTURE;
 748         uvd->vcap.channels = 1;
 749         uvd->vcap.audios = 0;
 750         uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
 751         uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
 752         uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
 753         uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
 754
 755         memset(&uvd->vchan, 0, sizeof(uvd->vchan));
 756         uvd->vchan.flags = 0 ;
 757         uvd->vchan.tuners = 0;
 758         uvd->vchan.channel = 0;
 759         uvd->vchan.type = VIDEO_TYPE_CAMERA;
 760         strcpy(uvd->vchan.name, "Camera");
 761
 762         /* Talk to device */
 763         DEBUG(1, "device init");
 764         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 765                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 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_set_misc(uvd, 0x2, 0, 0xd))
 769                 DEBUG(2, "2,0,d failed");
 770         DEBUG(1, "setting initial values");
 771 }
 772
 773 static int konicawc_probe(struct usb_interface *intf, const struct usb_device_id *devid)
 774 {
 775         struct usb_device *dev = interface_to_usbdev(intf);
 776         struct uvd *uvd = NULL;
 777         int ix, i, nas;
 778         int actInterface=-1, inactInterface=-1, maxPS=0;
 779         unsigned char video_ep = 0;
 780
 781         DEBUG(1, "konicawc_probe(%p)", intf);
 782
 783         /* We don't handle multi-config cameras */
 784         if (dev->descriptor.bNumConfigurations != 1)
 785                 return -ENODEV;
 786
 787         info("Konica Webcam (rev. 0x%04x)", le16_to_cpu(dev->descriptor.bcdDevice));
 788         RESTRICT_TO_RANGE(speed, 0, MAX_SPEED);
 789
 790         /* Validate found interface: must have one ISO endpoint */
 791         nas = intf->num_altsetting;
 792         if (nas != 8) {
 793                 err("Incorrect number of alternate settings (%d) for this camera!", nas);
 794                 return -ENODEV;
 795         }
 796         /* Validate all alternate settings */
 797         for (ix=0; ix < nas; ix++) {
 798                 const struct usb_host_interface *interface;
 799                 const struct usb_endpoint_descriptor *endpoint;
 800
 801                 interface = &intf->altsetting[ix];
 802                 i = interface->desc.bAlternateSetting;
 803                 if (interface->desc.bNumEndpoints != 2) {
 804                         err("Interface %d. has %u. endpoints!",
 805                             interface->desc.bInterfaceNumber,
 806                             (unsigned)(interface->desc.bNumEndpoints));
 807                         return -ENODEV;
 808                 }
 809                 endpoint = &interface->endpoint[1].desc;
 810                 DEBUG(1, "found endpoint: addr: 0x%2.2x maxps = 0x%4.4x",
 811                     endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize));
 812                 if (video_ep == 0)
 813                         video_ep = endpoint->bEndpointAddress;
 814                 else if (video_ep != endpoint->bEndpointAddress) {
 815                         err("Alternate settings have different endpoint addresses!");
 816                         return -ENODEV;
 817                 }
 818                 if ((endpoint->bmAttributes & 0x03) != 0x01) {
 819                         err("Interface %d. has non-ISO endpoint!",
 820                             interface->desc.bInterfaceNumber);
 821                         return -ENODEV;
 822                 }
 823                 if ((endpoint->bEndpointAddress & 0x80) == 0) {
 824                         err("Interface %d. has ISO OUT endpoint!",
 825                             interface->desc.bInterfaceNumber);
 826                         return -ENODEV;
 827                 }
 828                 if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
 829                         if (inactInterface < 0)
 830                                 inactInterface = i;
 831                         else {
 832                                 err("More than one inactive alt. setting!");
 833                                 return -ENODEV;
 834                         }
 835                 } else {
 836                         if (i == spd_to_iface[speed]) {
 837                                 /* This one is the requested one */
 838                                 actInterface = i;
 839                         }
 840                 }
 841                 if (le16_to_cpu(endpoint->wMaxPacketSize) > maxPS)
 842                         maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
 843         }
 844         if(actInterface == -1) {
 845                 err("Cant find required endpoint");
 846                 return -ENODEV;
 847         }
 848
 849         DEBUG(1, "Selecting requested active setting=%d. maxPS=%d.", actInterface, maxPS);
 850
 851         uvd = usbvideo_AllocateDevice(cams);
 852         if (uvd != NULL) {
 853                 struct konicawc *cam = (struct konicawc *)(uvd->user_data);
 854                 /* Here uvd is a fully allocated uvd object */
 855                 for(i = 0; i < USBVIDEO_NUMSBUF; i++) {
 856                         cam->sts_urb[i] = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
 857                         if(cam->sts_urb[i] == NULL) {
 858                                 while(i--) {
 859                                         usb_free_urb(cam->sts_urb[i]);
 860                                 }
 861                                 err("can't allocate urbs");
 862                                 return -ENOMEM;
 863                         }
 864                 }
 865                 cam->speed = speed;
 866                 RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
 867                 cam->width = camera_sizes[size].width;
 868                 cam->height = camera_sizes[size].height;
 869                 cam->size = size;
 870
 871                 uvd->flags = 0;
 872                 uvd->debug = debug;
 873                 uvd->dev = dev;
 874                 uvd->iface = intf->altsetting->desc.bInterfaceNumber;
 875                 uvd->ifaceAltInactive = inactInterface;
 876                 uvd->ifaceAltActive = actInterface;
 877                 uvd->video_endp = video_ep;
 878                 uvd->iso_packet_len = maxPS;
 879                 uvd->paletteBits = 1L << VIDEO_PALETTE_YUV420P;
 880                 uvd->defaultPalette = VIDEO_PALETTE_YUV420P;
 881                 uvd->canvas = VIDEOSIZE(320, 240);
 882                 uvd->videosize = VIDEOSIZE(cam->width, cam->height);
 883
 884                 /* Initialize konicawc specific data */
 885                 konicawc_configure_video(uvd);
 886
 887                 i = usbvideo_RegisterVideoDevice(uvd);
 888                 uvd->max_frame_size = (320 * 240 * 3)/2;
 889                 if (i != 0) {
 890                         err("usbvideo_RegisterVideoDevice() failed.");
 891                         uvd = NULL;
 892                 }
 893
 894                 konicawc_register_input(cam, dev);
 895         }
 896
 897         if (uvd) {
 898                 usb_set_intfdata (intf, uvd);
 899                 return 0;
 900         }
 901         return -EIO;
 902 }
 903
 904
 905 static void konicawc_free_uvd(struct uvd *uvd)
 906 {
 907         int i;
 908         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 909
 910         konicawc_unregister_input(cam);
 911
 912         for (i = 0; i < USBVIDEO_NUMSBUF; i++) {
 913                 usb_free_urb(cam->sts_urb[i]);
 914                 cam->sts_urb[i] = NULL;
 915         }
 916 }
 917
 918
 919 static struct usb_device_id id_table[] = {
 920         { USB_DEVICE(0x04c8, 0x0720) }, /* Intel YC 76 */
 921         { }  /* Terminating entry */
 922 };
 923
 924
 925 static int __init konicawc_init(void)
 926 {
 927         struct usbvideo_cb cbTbl;
 928         info(DRIVER_DESC " " DRIVER_VERSION);
 929         memset(&cbTbl, 0, sizeof(cbTbl));
 930         cbTbl.probe = konicawc_probe;
 931         cbTbl.setupOnOpen = konicawc_setup_on_open;
 932         cbTbl.processData = konicawc_process_isoc;
 933         cbTbl.getFPS = konicawc_calculate_fps;
 934         cbTbl.setVideoMode = konicawc_set_video_mode;
 935         cbTbl.startDataPump = konicawc_start_data;
 936         cbTbl.stopDataPump = konicawc_stop_data;
 937         cbTbl.adjustPicture = konicawc_adjust_picture;
 938         cbTbl.userFree = konicawc_free_uvd;
 939         return usbvideo_register(
 940                 &cams,
 941                 MAX_CAMERAS,
 942                 sizeof(struct konicawc),
 943                 "konicawc",
 944                 &cbTbl,
 945                 THIS_MODULE,
 946                 id_table);
 947 }
 948
 949
 950 static void __exit konicawc_cleanup(void)
 951 {
 952         usbvideo_Deregister(&cams);
 953 }
 954
 955
 956 MODULE_DEVICE_TABLE(usb, id_table);
 957
 958 MODULE_LICENSE("GPL");
 959 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
 960 MODULE_DESCRIPTION(DRIVER_DESC);
 961 module_param(speed, int, 0);
 962 MODULE_PARM_DESC(speed, "Initial speed: 0 (slowest) - 6 (fastest)");
 963 module_param(size, int, 0);
 964 MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 160x136 2: 176x144 3: 320x240");
 965 module_param(brightness, int, 0);
 966 MODULE_PARM_DESC(brightness, "Initial brightness 0 - 108");
 967 module_param(contrast, int, 0);
 968 MODULE_PARM_DESC(contrast, "Initial contrast 0 - 108");
 969 module_param(saturation, int, 0);
 970 MODULE_PARM_DESC(saturation, "Initial saturation 0 - 108");
 971 module_param(sharpness, int, 0);
 972 MODULE_PARM_DESC(sharpness, "Initial brightness 0 - 108");
 973 module_param(whitebal, int, 0);
 974 MODULE_PARM_DESC(whitebal, "Initial white balance 0 - 363");
 975
 976 #ifdef CONFIG_USB_DEBUG
 977 module_param(debug, int, S_IRUGO | S_IWUSR);
 978 MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
 979 #endif
 980
 981 module_init(konicawc_init);
 982 module_exit(konicawc_cleanup);