drivers/usb/media/konicawc.c

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