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