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", __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                         dev_info(&uvd->dev->dev, "unknown status %2.2x\n",
 341                                  sts);
 342                         bad++;
 343                         continue;
 344                 }
 345                 if(!sts && cam->lastframe == -2) {
 346                         DEBUG(2, "dropping frame looking for image start");
 347                         continue;
 348                 }
 349
 350                 keep++;
 351                 if(sts & 0x80) { /* frame start */
 352                         unsigned char marker[] = { 0, 0xff, 0, 0x00 };
 353
 354                         if(cam->lastframe == -2) {
 355                                 DEBUG(2, "found initial image");
 356                                 cam->lastframe = -1;
 357                         }
 358
 359                         marker[3] = sts & 0x7F;
 360                         RingQueue_Enqueue(&uvd->dp, marker, 4);
 361                         totlen += 4;
 362                 }
 363
 364                 totlen += n;    /* Little local accounting */
 365                 RingQueue_Enqueue(&uvd->dp, cdata, n);
 366         }
 367         DEBUG(8, "finished: keep = %d discard = %d bad = %d added %d bytes",
 368                     keep, discard, bad, totlen);
 369         return totlen;
 370 }
 371
 372
 373 static void resubmit_urb(struct uvd *uvd, struct urb *urb)
 374 {
 375         int i, ret;
 376         for (i = 0; i < FRAMES_PER_DESC; i++) {
 377                 urb->iso_frame_desc[i].status = 0;
 378         }
 379         urb->dev = uvd->dev;
 380         urb->status = 0;
 381         ret = usb_submit_urb(urb, GFP_ATOMIC);
 382         DEBUG(3, "submitting urb of length %d", urb->transfer_buffer_length);
 383         if(ret)
 384                 err("usb_submit_urb error (%d)", ret);
 385
 386 }
 387
 388
 389 static void konicawc_isoc_irq(struct urb *urb)
 390 {
 391         struct uvd *uvd = urb->context;
 392         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 393
 394         /* We don't want to do anything if we are about to be removed! */
 395         if (!CAMERA_IS_OPERATIONAL(uvd))
 396                 return;
 397
 398         if (!uvd->streaming) {
 399                 DEBUG(1, "Not streaming, but interrupt!");
 400                 return;
 401         }
 402
 403         DEBUG(3, "got frame %d len = %d buflen =%d", urb->start_frame, urb->actual_length, urb->transfer_buffer_length);
 404
 405         uvd->stats.urb_count++;
 406
 407         if (urb->transfer_buffer_length > 32) {
 408                 cam->last_data_urb = urb;
 409                 return;
 410         }
 411         /* Copy the data received into ring queue */
 412         if(cam->last_data_urb) {
 413                 int len = 0;
 414                 if(urb->start_frame != cam->last_data_urb->start_frame)
 415                         err("Lost sync on frames");
 416                 else if (!urb->status && !cam->last_data_urb->status)
 417                         len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);
 418
 419                 resubmit_urb(uvd, cam->last_data_urb);
 420                 resubmit_urb(uvd, urb);
 421                 cam->last_data_urb = NULL;
 422                 uvd->stats.urb_length = len;
 423                 uvd->stats.data_count += len;
 424                 if(len)
 425                         RingQueue_WakeUpInterruptible(&uvd->dp);
 426                 return;
 427         }
 428         return;
 429 }
 430
 431
 432 static int konicawc_start_data(struct uvd *uvd)
 433 {
 434         struct usb_device *dev = uvd->dev;
 435         int i, errFlag;
 436         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 437         int pktsz;
 438         struct usb_interface *intf;
 439         struct usb_host_interface *interface = NULL;
 440
 441         intf = usb_ifnum_to_if(dev, uvd->iface);
 442         if (intf)
 443                 interface = usb_altnum_to_altsetting(intf,
 444                                 spd_to_iface[cam->speed]);
 445         if (!interface)
 446                 return -ENXIO;
 447         pktsz = le16_to_cpu(interface->endpoint[1].desc.wMaxPacketSize);
 448         DEBUG(1, "pktsz = %d", pktsz);
 449         if (!CAMERA_IS_OPERATIONAL(uvd)) {
 450                 err("Camera is not operational");
 451                 return -EFAULT;
 452         }
 453         uvd->curframe = -1;
 454         konicawc_camera_on(uvd);
 455         /* Alternate interface 1 is is the biggest frame size */
 456         i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
 457         if (i < 0) {
 458                 err("usb_set_interface error");
 459                 uvd->last_error = i;
 460                 return -EBUSY;
 461         }
 462
 463         /* We double buffer the Iso lists */
 464         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 465                 int j, k;
 466                 struct urb *urb = uvd->sbuf[i].urb;
 467                 urb->dev = dev;
 468                 urb->context = uvd;
 469                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
 470                 urb->interval = 1;
 471                 urb->transfer_flags = URB_ISO_ASAP;
 472                 urb->transfer_buffer = uvd->sbuf[i].data;
 473                 urb->complete = konicawc_isoc_irq;
 474                 urb->number_of_packets = FRAMES_PER_DESC;
 475                 urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
 476                 for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
 477                         urb->iso_frame_desc[j].offset = k;
 478                         urb->iso_frame_desc[j].length = pktsz;
 479                 }
 480
 481                 urb = cam->sts_urb[i];
 482                 urb->dev = dev;
 483                 urb->context = uvd;
 484                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp-1);
 485                 urb->interval = 1;
 486                 urb->transfer_flags = URB_ISO_ASAP;
 487                 urb->transfer_buffer = cam->sts_buf[i];
 488                 urb->complete = konicawc_isoc_irq;
 489                 urb->number_of_packets = FRAMES_PER_DESC;
 490                 urb->transfer_buffer_length = FRAMES_PER_DESC;
 491                 for (j=0; j < FRAMES_PER_DESC; j++) {
 492                         urb->iso_frame_desc[j].offset = j;
 493                         urb->iso_frame_desc[j].length = 1;
 494                 }
 495         }
 496
 497         cam->last_data_urb = NULL;
 498
 499         /* Submit all URBs */
 500         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 501                 errFlag = usb_submit_urb(cam->sts_urb[i], GFP_KERNEL);
 502                 if (errFlag)
 503                         err("usb_submit_isoc(%d) ret %d", i, errFlag);
 504
 505                 errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
 506                 if (errFlag)
 507                         err ("usb_submit_isoc(%d) ret %d", i, errFlag);
 508         }
 509
 510         uvd->streaming = 1;
 511         DEBUG(1, "streaming=1 video_endp=$%02x", uvd->video_endp);
 512         return 0;
 513 }
 514
 515
 516 static void konicawc_stop_data(struct uvd *uvd)
 517 {
 518         int i, j;
 519         struct konicawc *cam;
 520
 521         if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
 522                 return;
 523
 524         konicawc_camera_off(uvd);
 525         uvd->streaming = 0;
 526         cam = (struct konicawc *)uvd->user_data;
 527         cam->last_data_urb = NULL;
 528
 529         /* Unschedule all of the iso td's */
 530         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 531                 usb_kill_urb(uvd->sbuf[i].urb);
 532                 usb_kill_urb(cam->sts_urb[i]);
 533         }
 534
 535         if (!uvd->remove_pending) {
 536                 /* Set packet size to 0 */
 537                 j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
 538                 if (j < 0) {
 539                         err("usb_set_interface() error %d.", j);
 540                         uvd->last_error = j;
 541                 }
 542         }
 543 }
 544
 545
 546 static void konicawc_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
 547 {
 548         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 549         int maxline = cam->maxline;
 550         int yplanesz = cam->yplanesz;
 551
 552         assert(frame != NULL);
 553
 554         DEBUG(5, "maxline = %d yplanesz = %d", maxline, yplanesz);
 555         DEBUG(3, "Frame state = %d", frame->scanstate);
 556
 557         if(frame->scanstate == ScanState_Scanning) {
 558                 int drop = 0;
 559                 int curframe;
 560                 int fdrops = 0;
 561                 DEBUG(3, "Searching for marker, queue len = %d", RingQueue_GetLength(&uvd->dp));
 562                 while(RingQueue_GetLength(&uvd->dp) >= 4) {
 563                         if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
 564                             (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
 565                             (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
 566                             (RING_QUEUE_PEEK(&uvd->dp, 3) < 0x80)) {
 567                                 curframe = RING_QUEUE_PEEK(&uvd->dp, 3);
 568                                 if(cam->lastframe >= 0) {
 569                                         fdrops = (0x80 + curframe - cam->lastframe) & 0x7F;
 570                                         fdrops--;
 571                                         if(fdrops) {
 572                                                 dev_info(&uvd->dev->dev,
 573                                                          "Dropped %d frames "
 574                                                          "(%d -> %d)\n",
 575                                                          fdrops,
 576                                                          cam->lastframe,
 577                                                          curframe);
 578                                         }
 579                                 }
 580                                 cam->lastframe = curframe;
 581                                 frame->curline = 0;
 582                                 frame->scanstate = ScanState_Lines;
 583                                 RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
 584                                 break;
 585                         }
 586                         RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
 587                         drop++;
 588                 }
 589                 if(drop)
 590                         DEBUG(2, "dropped %d bytes looking for new frame", drop);
 591         }
 592
 593         if(frame->scanstate == ScanState_Scanning)
 594                 return;
 595
 596         /* Try to move data from queue into frame buffer
 597          * We get data in blocks of 384 bytes made up of:
 598          * 256 Y, 64 U, 64 V.
 599          * This needs to be written out as a Y plane, a U plane and a V plane.
 600          */
 601
 602         while ( frame->curline < maxline && (RingQueue_GetLength(&uvd->dp) >= 384)) {
 603                 /* Y */
 604                 RingQueue_Dequeue(&uvd->dp, frame->data + (frame->curline * 256), 256);
 605                 /* U */
 606                 RingQueue_Dequeue(&uvd->dp, frame->data + yplanesz + (frame->curline * 64), 64);
 607                 /* V */
 608                 RingQueue_Dequeue(&uvd->dp, frame->data + (5 * yplanesz)/4 + (frame->curline * 64), 64);
 609                 frame->seqRead_Length += 384;
 610                 frame->curline++;
 611         }
 612         /* See if we filled the frame */
 613         if (frame->curline == maxline) {
 614                 DEBUG(5, "got whole frame");
 615
 616                 frame->frameState = FrameState_Done_Hold;
 617                 frame->curline = 0;
 618                 uvd->curframe = -1;
 619                 uvd->stats.frame_num++;
 620         }
 621 }
 622
 623
 624 static int konicawc_find_fps(int size, int fps)
 625 {
 626         int i;
 627
 628         fps *= 3;
 629         DEBUG(1, "konica_find_fps: size = %d fps = %d", size, fps);
 630         if(fps <= spd_to_fps[size][0])
 631                 return 0;
 632
 633         if(fps >= spd_to_fps[size][MAX_SPEED])
 634                 return MAX_SPEED;
 635
 636         for(i = 0; i < MAX_SPEED; i++) {
 637                 if((fps >= spd_to_fps[size][i]) && (fps <= spd_to_fps[size][i+1])) {
 638                         DEBUG(2, "fps %d between %d and %d", fps, i, i+1);
 639                         if( (fps - spd_to_fps[size][i]) < (spd_to_fps[size][i+1] - fps))
 640                                 return i;
 641                         else
 642                                 return i+1;
 643                 }
 644         }
 645         return MAX_SPEED+1;
 646 }
 647
 648
 649 static int konicawc_set_video_mode(struct uvd *uvd, struct video_window *vw)
 650 {
 651         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 652         int newspeed = cam->speed;
 653         int newsize;
 654         int x = vw->width;
 655         int y = vw->height;
 656         int fps = vw->flags;
 657
 658         if(x > 0 && y > 0) {
 659                 DEBUG(2, "trying to find size %d,%d", x, y);
 660                 for(newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
 661                         if((camera_sizes[newsize].width == x) && (camera_sizes[newsize].height == y))
 662                                 break;
 663                 }
 664         } else {
 665                 newsize = cam->size;
 666         }
 667
 668         if(newsize > MAX_FRAME_SIZE) {
 669                 DEBUG(1, "couldn't find size %d,%d", x, y);
 670                 return -EINVAL;
 671         }
 672
 673         if(fps > 0) {
 674                 DEBUG(1, "trying to set fps to %d", fps);
 675                 newspeed = konicawc_find_fps(newsize, fps);
 676                 DEBUG(1, "find_fps returned %d (%d)", newspeed, spd_to_fps[newsize][newspeed]);
 677         }
 678
 679         if(newspeed > MAX_SPEED)
 680                 return -EINVAL;
 681
 682         DEBUG(1, "setting size to %d speed to %d", newsize, newspeed);
 683         if((newsize == cam->size) && (newspeed == cam->speed)) {
 684                 DEBUG(1, "Nothing to do");
 685                 return 0;
 686         }
 687         DEBUG(0, "setting to  %dx%d @ %d fps", camera_sizes[newsize].width,
 688              camera_sizes[newsize].height, spd_to_fps[newsize][newspeed]/3);
 689
 690         konicawc_stop_data(uvd);
 691         uvd->ifaceAltActive = spd_to_iface[newspeed];
 692         DEBUG(1, "new interface = %d", uvd->ifaceAltActive);
 693         cam->speed = newspeed;
 694
 695         if(cam->size != newsize) {
 696                 cam->size = newsize;
 697                 konicawc_set_camera_size(uvd);
 698         }
 699
 700         /* Flush the input queue and clear any current frame in progress */
 701
 702         RingQueue_Flush(&uvd->dp);
 703         cam->lastframe = -2;
 704         if(uvd->curframe != -1) {
 705                 uvd->frame[uvd->curframe].curline = 0;
 706                 uvd->frame[uvd->curframe].seqRead_Length = 0;
 707                 uvd->frame[uvd->curframe].seqRead_Index = 0;
 708         }
 709
 710         konicawc_start_data(uvd);
 711         return 0;
 712 }
 713
 714
 715 static int konicawc_calculate_fps(struct uvd *uvd)
 716 {
 717         struct konicawc *cam = uvd->user_data;
 718         return spd_to_fps[cam->size][cam->speed]/3;
 719 }
 720
 721
 722 static void konicawc_configure_video(struct uvd *uvd)
 723 {
 724         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 725         u8 buf[2];
 726
 727         memset(&uvd->vpic, 0, sizeof(uvd->vpic));
 728         memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
 729
 730         RESTRICT_TO_RANGE(brightness, 0, MAX_BRIGHTNESS);
 731         RESTRICT_TO_RANGE(contrast, 0, MAX_CONTRAST);
 732         RESTRICT_TO_RANGE(saturation, 0, MAX_SATURATION);
 733         RESTRICT_TO_RANGE(sharpness, 0, MAX_SHARPNESS);
 734         RESTRICT_TO_RANGE(whitebal, 0, MAX_WHITEBAL);
 735
 736         cam->brightness = brightness / 11;
 737         cam->contrast = contrast / 11;
 738         cam->saturation = saturation / 11;
 739         cam->sharpness = sharpness / 11;
 740         cam->white_bal = whitebal / 11;
 741
 742         uvd->vpic.colour = 108;
 743         uvd->vpic.hue = 108;
 744         uvd->vpic.brightness = brightness;
 745         uvd->vpic.contrast = contrast;
 746         uvd->vpic.whiteness = whitebal;
 747         uvd->vpic.depth = 6;
 748         uvd->vpic.palette = VIDEO_PALETTE_YUV420P;
 749
 750         memset(&uvd->vcap, 0, sizeof(uvd->vcap));
 751         strcpy(uvd->vcap.name, "Konica Webcam");
 752         uvd->vcap.type = VID_TYPE_CAPTURE;
 753         uvd->vcap.channels = 1;
 754         uvd->vcap.audios = 0;
 755         uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
 756         uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
 757         uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
 758         uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
 759
 760         memset(&uvd->vchan, 0, sizeof(uvd->vchan));
 761         uvd->vchan.flags = 0 ;
 762         uvd->vchan.tuners = 0;
 763         uvd->vchan.channel = 0;
 764         uvd->vchan.type = VIDEO_TYPE_CAMERA;
 765         strcpy(uvd->vchan.name, "Camera");
 766
 767         /* Talk to device */
 768         DEBUG(1, "device init");
 769         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 770                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 771         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 772                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 773         if(konicawc_set_misc(uvd, 0x2, 0, 0xd))
 774                 DEBUG(2, "2,0,d failed");
 775         DEBUG(1, "setting initial values");
 776 }
 777
 778 static int konicawc_probe(struct usb_interface *intf, const struct usb_device_id *devid)
 779 {
 780         struct usb_device *dev = interface_to_usbdev(intf);
 781         struct uvd *uvd = NULL;
 782         int ix, i, nas;
 783         int actInterface=-1, inactInterface=-1, maxPS=0;
 784         unsigned char video_ep = 0;
 785
 786         DEBUG(1, "konicawc_probe(%p)", intf);
 787
 788         /* We don't handle multi-config cameras */
 789         if (dev->descriptor.bNumConfigurations != 1)
 790                 return -ENODEV;
 791
 792         dev_info(&intf->dev, "Konica Webcam (rev. 0x%04x)\n",
 793                  le16_to_cpu(dev->descriptor.bcdDevice));
 794         RESTRICT_TO_RANGE(speed, 0, MAX_SPEED);
 795
 796         /* Validate found interface: must have one ISO endpoint */
 797         nas = intf->num_altsetting;
 798         if (nas != 8) {
 799                 err("Incorrect number of alternate settings (%d) for this camera!", nas);
 800                 return -ENODEV;
 801         }
 802         /* Validate all alternate settings */
 803         for (ix=0; ix < nas; ix++) {
 804                 const struct usb_host_interface *interface;
 805                 const struct usb_endpoint_descriptor *endpoint;
 806
 807                 interface = &intf->altsetting[ix];
 808                 i = interface->desc.bAlternateSetting;
 809                 if (interface->desc.bNumEndpoints != 2) {
 810                         err("Interface %d. has %u. endpoints!",
 811                             interface->desc.bInterfaceNumber,
 812                             (unsigned)(interface->desc.bNumEndpoints));
 813                         return -ENODEV;
 814                 }
 815                 endpoint = &interface->endpoint[1].desc;
 816                 DEBUG(1, "found endpoint: addr: 0x%2.2x maxps = 0x%4.4x",
 817                     endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize));
 818                 if (video_ep == 0)
 819                         video_ep = endpoint->bEndpointAddress;
 820                 else if (video_ep != endpoint->bEndpointAddress) {
 821                         err("Alternate settings have different endpoint addresses!");
 822                         return -ENODEV;
 823                 }
 824                 if ((endpoint->bmAttributes & 0x03) != 0x01) {
 825                         err("Interface %d. has non-ISO endpoint!",
 826                             interface->desc.bInterfaceNumber);
 827                         return -ENODEV;
 828                 }
 829                 if ((endpoint->bEndpointAddress & 0x80) == 0) {
 830                         err("Interface %d. has ISO OUT endpoint!",
 831                             interface->desc.bInterfaceNumber);
 832                         return -ENODEV;
 833                 }
 834                 if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
 835                         if (inactInterface < 0)
 836                                 inactInterface = i;
 837                         else {
 838                                 err("More than one inactive alt. setting!");
 839                                 return -ENODEV;
 840                         }
 841                 } else {
 842                         if (i == spd_to_iface[speed]) {
 843                                 /* This one is the requested one */
 844                                 actInterface = i;
 845                         }
 846                 }
 847                 if (le16_to_cpu(endpoint->wMaxPacketSize) > maxPS)
 848                         maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
 849         }
 850         if(actInterface == -1) {
 851                 err("Cant find required endpoint");
 852                 return -ENODEV;
 853         }
 854
 855         DEBUG(1, "Selecting requested active setting=%d. maxPS=%d.", actInterface, maxPS);
 856
 857         uvd = usbvideo_AllocateDevice(cams);
 858         if (uvd != NULL) {
 859                 struct konicawc *cam = (struct konicawc *)(uvd->user_data);
 860                 /* Here uvd is a fully allocated uvd object */
 861                 for(i = 0; i < USBVIDEO_NUMSBUF; i++) {
 862                         cam->sts_urb[i] = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
 863                         if(cam->sts_urb[i] == NULL) {
 864                                 while(i--) {
 865                                         usb_free_urb(cam->sts_urb[i]);
 866                                 }
 867                                 err("can't allocate urbs");
 868                                 return -ENOMEM;
 869                         }
 870                 }
 871                 cam->speed = speed;
 872                 RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
 873                 cam->width = camera_sizes[size].width;
 874                 cam->height = camera_sizes[size].height;
 875                 cam->size = size;
 876
 877                 uvd->flags = 0;
 878                 uvd->debug = debug;
 879                 uvd->dev = dev;
 880                 uvd->iface = intf->altsetting->desc.bInterfaceNumber;
 881                 uvd->ifaceAltInactive = inactInterface;
 882                 uvd->ifaceAltActive = actInterface;
 883                 uvd->video_endp = video_ep;
 884                 uvd->iso_packet_len = maxPS;
 885                 uvd->paletteBits = 1L << VIDEO_PALETTE_YUV420P;
 886                 uvd->defaultPalette = VIDEO_PALETTE_YUV420P;
 887                 uvd->canvas = VIDEOSIZE(320, 240);
 888                 uvd->videosize = VIDEOSIZE(cam->width, cam->height);
 889
 890                 /* Initialize konicawc specific data */
 891                 konicawc_configure_video(uvd);
 892
 893                 i = usbvideo_RegisterVideoDevice(uvd);
 894                 uvd->max_frame_size = (320 * 240 * 3)/2;
 895                 if (i != 0) {
 896                         err("usbvideo_RegisterVideoDevice() failed.");
 897                         uvd = NULL;
 898                 }
 899
 900                 konicawc_register_input(cam, dev);
 901         }
 902
 903         if (uvd) {
 904                 usb_set_intfdata (intf, uvd);
 905                 return 0;
 906         }
 907         return -EIO;
 908 }
 909
 910
 911 static void konicawc_free_uvd(struct uvd *uvd)
 912 {
 913         int i;
 914         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 915
 916         konicawc_unregister_input(cam);
 917
 918         for (i = 0; i < USBVIDEO_NUMSBUF; i++) {
 919                 usb_free_urb(cam->sts_urb[i]);
 920                 cam->sts_urb[i] = NULL;
 921         }
 922 }
 923
 924
 925 static struct usb_device_id id_table[] = {
 926         { USB_DEVICE(0x04c8, 0x0720) }, /* Intel YC 76 */
 927         { }  /* Terminating entry */
 928 };
 929
 930
 931 static int __init konicawc_init(void)
 932 {
 933         struct usbvideo_cb cbTbl;
 934         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 935                DRIVER_DESC "\n");
 936         memset(&cbTbl, 0, sizeof(cbTbl));
 937         cbTbl.probe = konicawc_probe;
 938         cbTbl.setupOnOpen = konicawc_setup_on_open;
 939         cbTbl.processData = konicawc_process_isoc;
 940         cbTbl.getFPS = konicawc_calculate_fps;
 941         cbTbl.setVideoMode = konicawc_set_video_mode;
 942         cbTbl.startDataPump = konicawc_start_data;
 943         cbTbl.stopDataPump = konicawc_stop_data;
 944         cbTbl.adjustPicture = konicawc_adjust_picture;
 945         cbTbl.userFree = konicawc_free_uvd;
 946         return usbvideo_register(
 947                 &cams,
 948                 MAX_CAMERAS,
 949                 sizeof(struct konicawc),
 950                 "konicawc",
 951                 &cbTbl,
 952                 THIS_MODULE,
 953                 id_table);
 954 }
 955
 956
 957 static void __exit konicawc_cleanup(void)
 958 {
 959         usbvideo_Deregister(&cams);
 960 }
 961
 962
 963 MODULE_DEVICE_TABLE(usb, id_table);
 964
 965 MODULE_LICENSE("GPL");
 966 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
 967 MODULE_DESCRIPTION(DRIVER_DESC);
 968 module_param(speed, int, 0);
 969 MODULE_PARM_DESC(speed, "Initial speed: 0 (slowest) - 6 (fastest)");
 970 module_param(size, int, 0);
 971 MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 160x136 2: 176x144 3: 320x240");
 972 module_param(brightness, int, 0);
 973 MODULE_PARM_DESC(brightness, "Initial brightness 0 - 108");
 974 module_param(contrast, int, 0);
 975 MODULE_PARM_DESC(contrast, "Initial contrast 0 - 108");
 976 module_param(saturation, int, 0);
 977 MODULE_PARM_DESC(saturation, "Initial saturation 0 - 108");
 978 module_param(sharpness, int, 0);
 979 MODULE_PARM_DESC(sharpness, "Initial brightness 0 - 108");
 980 module_param(whitebal, int, 0);
 981 MODULE_PARM_DESC(whitebal, "Initial white balance 0 - 363");
 982
 983 #ifdef CONFIG_USB_DEBUG
 984 module_param(debug, int, S_IRUGO | S_IWUSR);
 985 MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
 986 #endif
 987
 988 module_init(konicawc_init);
 989 module_exit(konicawc_cleanup);