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 #include <linux/gfp.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", __func__ , ## arg); \
  62         }
  63 #else
  64 #define DEBUG(n, arg...)
  65 static const int debug;
  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 const 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 const 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 const 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 #ifdef CONFIG_INPUT
 222
 223 static void konicawc_register_input(struct konicawc *cam, struct usb_device *dev)
 224 {
 225         struct input_dev *input_dev;
 226         int error;
 227
 228         usb_make_path(dev, cam->input_physname, sizeof(cam->input_physname));
 229         strlcat(cam->input_physname, "/input0", sizeof(cam->input_physname));
 230
 231         cam->input = input_dev = input_allocate_device();
 232         if (!input_dev) {
 233                 dev_warn(&dev->dev,
 234                          "Not enough memory for camera's input device\n");
 235                 return;
 236         }
 237
 238         input_dev->name = "Konicawc snapshot button";
 239         input_dev->phys = cam->input_physname;
 240         usb_to_input_id(dev, &input_dev->id);
 241         input_dev->dev.parent = &dev->dev;
 242
 243         input_dev->evbit[0] = BIT_MASK(EV_KEY);
 244         input_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA);
 245
 246         error = input_register_device(cam->input);
 247         if (error) {
 248                 dev_warn(&dev->dev,
 249                          "Failed to register camera's input device, err: %d\n",
 250                          error);
 251                 input_free_device(cam->input);
 252                 cam->input = NULL;
 253         }
 254 }
 255
 256 static void konicawc_unregister_input(struct konicawc *cam)
 257 {
 258         if (cam->input) {
 259                 input_unregister_device(cam->input);
 260                 cam->input = NULL;
 261         }
 262 }
 263
 264 static void konicawc_report_buttonstat(struct konicawc *cam)
 265 {
 266         if (cam->input) {
 267                 input_report_key(cam->input, KEY_CAMERA, cam->buttonsts);
 268                 input_sync(cam->input);
 269         }
 270 }
 271
 272 #else
 273
 274 static inline void konicawc_register_input(struct konicawc *cam, struct usb_device *dev) { }
 275 static inline void konicawc_unregister_input(struct konicawc *cam) { }
 276 static inline void konicawc_report_buttonstat(struct konicawc *cam) { }
 277
 278 #endif /* CONFIG_INPUT */
 279
 280 static int konicawc_compress_iso(struct uvd *uvd, struct urb *dataurb, struct urb *stsurb)
 281 {
 282         char *cdata;
 283         int i, totlen = 0;
 284         unsigned char *status = stsurb->transfer_buffer;
 285         int keep = 0, discard = 0, bad = 0;
 286         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 287
 288         for (i = 0; i < dataurb->number_of_packets; i++) {
 289                 int button = cam->buttonsts;
 290                 unsigned char sts;
 291                 int n = dataurb->iso_frame_desc[i].actual_length;
 292                 int st = dataurb->iso_frame_desc[i].status;
 293                 cdata = dataurb->transfer_buffer +
 294                         dataurb->iso_frame_desc[i].offset;
 295
 296                 /* Detect and ignore errored packets */
 297                 if (st < 0) {
 298                         DEBUG(1, "Data error: packet=%d. len=%d. status=%d.",
 299                               i, n, st);
 300                         uvd->stats.iso_err_count++;
 301                         continue;
 302                 }
 303
 304                 /* Detect and ignore empty packets */
 305                 if (n <= 0) {
 306                         uvd->stats.iso_skip_count++;
 307                         continue;
 308                 }
 309
 310                 /* See what the status data said about the packet */
 311                 sts = *(status+stsurb->iso_frame_desc[i].offset);
 312
 313                 /* sts: 0x80-0xff: frame start with frame number (ie 0-7f)
 314                  * otherwise:
 315                  * bit 0 0: keep packet
 316                  *       1: drop packet (padding data)
 317                  *
 318                  * bit 4 0 button not clicked
 319                  *       1 button clicked
 320                  * button is used to `take a picture' (in software)
 321                  */
 322
 323                 if(sts < 0x80) {
 324                         button = !!(sts & 0x40);
 325                         sts &= ~0x40;
 326                 }
 327
 328                 /* work out the button status, but don't do
 329                    anything with it for now */
 330
 331                 if(button != cam->buttonsts) {
 332                         DEBUG(2, "button: %sclicked", button ? "" : "un");
 333                         cam->buttonsts = button;
 334                         konicawc_report_buttonstat(cam);
 335                 }
 336
 337                 if(sts == 0x01) { /* drop frame */
 338                         discard++;
 339                         continue;
 340                 }
 341
 342                 if((sts > 0x01) && (sts < 0x80)) {
 343                         dev_info(&uvd->dev->dev, "unknown status %2.2x\n",
 344                                  sts);
 345                         bad++;
 346                         continue;
 347                 }
 348                 if(!sts && cam->lastframe == -2) {
 349                         DEBUG(2, "dropping frame looking for image start");
 350                         continue;
 351                 }
 352
 353                 keep++;
 354                 if(sts & 0x80) { /* frame start */
 355                         unsigned char marker[] = { 0, 0xff, 0, 0x00 };
 356
 357                         if(cam->lastframe == -2) {
 358                                 DEBUG(2, "found initial image");
 359                                 cam->lastframe = -1;
 360                         }
 361
 362                         marker[3] = sts & 0x7F;
 363                         RingQueue_Enqueue(&uvd->dp, marker, 4);
 364                         totlen += 4;
 365                 }
 366
 367                 totlen += n;    /* Little local accounting */
 368                 RingQueue_Enqueue(&uvd->dp, cdata, n);
 369         }
 370         DEBUG(8, "finished: keep = %d discard = %d bad = %d added %d bytes",
 371                     keep, discard, bad, totlen);
 372         return totlen;
 373 }
 374
 375
 376 static void resubmit_urb(struct uvd *uvd, struct urb *urb)
 377 {
 378         int i, ret;
 379         for (i = 0; i < FRAMES_PER_DESC; i++) {
 380                 urb->iso_frame_desc[i].status = 0;
 381         }
 382         urb->dev = uvd->dev;
 383         urb->status = 0;
 384         ret = usb_submit_urb(urb, GFP_ATOMIC);
 385         DEBUG(3, "submitting urb of length %d", urb->transfer_buffer_length);
 386         if(ret)
 387                 err("usb_submit_urb error (%d)", ret);
 388
 389 }
 390
 391
 392 static void konicawc_isoc_irq(struct urb *urb)
 393 {
 394         struct uvd *uvd = urb->context;
 395         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 396
 397         /* We don't want to do anything if we are about to be removed! */
 398         if (!CAMERA_IS_OPERATIONAL(uvd))
 399                 return;
 400
 401         if (!uvd->streaming) {
 402                 DEBUG(1, "Not streaming, but interrupt!");
 403                 return;
 404         }
 405
 406         DEBUG(3, "got frame %d len = %d buflen =%d", urb->start_frame, urb->actual_length, urb->transfer_buffer_length);
 407
 408         uvd->stats.urb_count++;
 409
 410         if (urb->transfer_buffer_length > 32) {
 411                 cam->last_data_urb = urb;
 412                 return;
 413         }
 414         /* Copy the data received into ring queue */
 415         if(cam->last_data_urb) {
 416                 int len = 0;
 417                 if(urb->start_frame != cam->last_data_urb->start_frame)
 418                         err("Lost sync on frames");
 419                 else if (!urb->status && !cam->last_data_urb->status)
 420                         len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);
 421
 422                 resubmit_urb(uvd, cam->last_data_urb);
 423                 resubmit_urb(uvd, urb);
 424                 cam->last_data_urb = NULL;
 425                 uvd->stats.urb_length = len;
 426                 uvd->stats.data_count += len;
 427                 if(len)
 428                         RingQueue_WakeUpInterruptible(&uvd->dp);
 429                 return;
 430         }
 431         return;
 432 }
 433
 434
 435 static int konicawc_start_data(struct uvd *uvd)
 436 {
 437         struct usb_device *dev = uvd->dev;
 438         int i, errFlag;
 439         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 440         int pktsz;
 441         struct usb_interface *intf;
 442         struct usb_host_interface *interface = NULL;
 443
 444         intf = usb_ifnum_to_if(dev, uvd->iface);
 445         if (intf)
 446                 interface = usb_altnum_to_altsetting(intf,
 447                                 spd_to_iface[cam->speed]);
 448         if (!interface)
 449                 return -ENXIO;
 450         pktsz = le16_to_cpu(interface->endpoint[1].desc.wMaxPacketSize);
 451         DEBUG(1, "pktsz = %d", pktsz);
 452         if (!CAMERA_IS_OPERATIONAL(uvd)) {
 453                 err("Camera is not operational");
 454                 return -EFAULT;
 455         }
 456         uvd->curframe = -1;
 457         konicawc_camera_on(uvd);
 458         /* Alternate interface 1 is is the biggest frame size */
 459         i = usb_set_interface(dev, uvd->iface, uvd->ifaceAltActive);
 460         if (i < 0) {
 461                 err("usb_set_interface error");
 462                 uvd->last_error = i;
 463                 return -EBUSY;
 464         }
 465
 466         /* We double buffer the Iso lists */
 467         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 468                 int j, k;
 469                 struct urb *urb = uvd->sbuf[i].urb;
 470                 urb->dev = dev;
 471                 urb->context = uvd;
 472                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
 473                 urb->interval = 1;
 474                 urb->transfer_flags = URB_ISO_ASAP;
 475                 urb->transfer_buffer = uvd->sbuf[i].data;
 476                 urb->complete = konicawc_isoc_irq;
 477                 urb->number_of_packets = FRAMES_PER_DESC;
 478                 urb->transfer_buffer_length = pktsz * FRAMES_PER_DESC;
 479                 for (j=k=0; j < FRAMES_PER_DESC; j++, k += pktsz) {
 480                         urb->iso_frame_desc[j].offset = k;
 481                         urb->iso_frame_desc[j].length = pktsz;
 482                 }
 483
 484                 urb = cam->sts_urb[i];
 485                 urb->dev = dev;
 486                 urb->context = uvd;
 487                 urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp-1);
 488                 urb->interval = 1;
 489                 urb->transfer_flags = URB_ISO_ASAP;
 490                 urb->transfer_buffer = cam->sts_buf[i];
 491                 urb->complete = konicawc_isoc_irq;
 492                 urb->number_of_packets = FRAMES_PER_DESC;
 493                 urb->transfer_buffer_length = FRAMES_PER_DESC;
 494                 for (j=0; j < FRAMES_PER_DESC; j++) {
 495                         urb->iso_frame_desc[j].offset = j;
 496                         urb->iso_frame_desc[j].length = 1;
 497                 }
 498         }
 499
 500         cam->last_data_urb = NULL;
 501
 502         /* Submit all URBs */
 503         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 504                 errFlag = usb_submit_urb(cam->sts_urb[i], GFP_KERNEL);
 505                 if (errFlag)
 506                         err("usb_submit_isoc(%d) ret %d", i, errFlag);
 507
 508                 errFlag = usb_submit_urb(uvd->sbuf[i].urb, GFP_KERNEL);
 509                 if (errFlag)
 510                         err ("usb_submit_isoc(%d) ret %d", i, errFlag);
 511         }
 512
 513         uvd->streaming = 1;
 514         DEBUG(1, "streaming=1 video_endp=$%02x", uvd->video_endp);
 515         return 0;
 516 }
 517
 518
 519 static void konicawc_stop_data(struct uvd *uvd)
 520 {
 521         int i, j;
 522         struct konicawc *cam;
 523
 524         if ((uvd == NULL) || (!uvd->streaming) || (uvd->dev == NULL))
 525                 return;
 526
 527         konicawc_camera_off(uvd);
 528         uvd->streaming = 0;
 529         cam = (struct konicawc *)uvd->user_data;
 530         cam->last_data_urb = NULL;
 531
 532         /* Unschedule all of the iso td's */
 533         for (i=0; i < USBVIDEO_NUMSBUF; i++) {
 534                 usb_kill_urb(uvd->sbuf[i].urb);
 535                 usb_kill_urb(cam->sts_urb[i]);
 536         }
 537
 538         if (!uvd->remove_pending) {
 539                 /* Set packet size to 0 */
 540                 j = usb_set_interface(uvd->dev, uvd->iface, uvd->ifaceAltInactive);
 541                 if (j < 0) {
 542                         err("usb_set_interface() error %d.", j);
 543                         uvd->last_error = j;
 544                 }
 545         }
 546 }
 547
 548
 549 static void konicawc_process_isoc(struct uvd *uvd, struct usbvideo_frame *frame)
 550 {
 551         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 552         int maxline = cam->maxline;
 553         int yplanesz = cam->yplanesz;
 554
 555         assert(frame != NULL);
 556
 557         DEBUG(5, "maxline = %d yplanesz = %d", maxline, yplanesz);
 558         DEBUG(3, "Frame state = %d", frame->scanstate);
 559
 560         if(frame->scanstate == ScanState_Scanning) {
 561                 int drop = 0;
 562                 int curframe;
 563                 int fdrops = 0;
 564                 DEBUG(3, "Searching for marker, queue len = %d", RingQueue_GetLength(&uvd->dp));
 565                 while(RingQueue_GetLength(&uvd->dp) >= 4) {
 566                         if ((RING_QUEUE_PEEK(&uvd->dp, 0) == 0x00) &&
 567                             (RING_QUEUE_PEEK(&uvd->dp, 1) == 0xff) &&
 568                             (RING_QUEUE_PEEK(&uvd->dp, 2) == 0x00) &&
 569                             (RING_QUEUE_PEEK(&uvd->dp, 3) < 0x80)) {
 570                                 curframe = RING_QUEUE_PEEK(&uvd->dp, 3);
 571                                 if(cam->lastframe >= 0) {
 572                                         fdrops = (0x80 + curframe - cam->lastframe) & 0x7F;
 573                                         fdrops--;
 574                                         if(fdrops) {
 575                                                 dev_info(&uvd->dev->dev,
 576                                                          "Dropped %d frames "
 577                                                          "(%d -> %d)\n",
 578                                                          fdrops,
 579                                                          cam->lastframe,
 580                                                          curframe);
 581                                         }
 582                                 }
 583                                 cam->lastframe = curframe;
 584                                 frame->curline = 0;
 585                                 frame->scanstate = ScanState_Lines;
 586                                 RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 4);
 587                                 break;
 588                         }
 589                         RING_QUEUE_DEQUEUE_BYTES(&uvd->dp, 1);
 590                         drop++;
 591                 }
 592                 if(drop)
 593                         DEBUG(2, "dropped %d bytes looking for new frame", drop);
 594         }
 595
 596         if(frame->scanstate == ScanState_Scanning)
 597                 return;
 598
 599         /* Try to move data from queue into frame buffer
 600          * We get data in blocks of 384 bytes made up of:
 601          * 256 Y, 64 U, 64 V.
 602          * This needs to be written out as a Y plane, a U plane and a V plane.
 603          */
 604
 605         while ( frame->curline < maxline && (RingQueue_GetLength(&uvd->dp) >= 384)) {
 606                 /* Y */
 607                 RingQueue_Dequeue(&uvd->dp, frame->data + (frame->curline * 256), 256);
 608                 /* U */
 609                 RingQueue_Dequeue(&uvd->dp, frame->data + yplanesz + (frame->curline * 64), 64);
 610                 /* V */
 611                 RingQueue_Dequeue(&uvd->dp, frame->data + (5 * yplanesz)/4 + (frame->curline * 64), 64);
 612                 frame->seqRead_Length += 384;
 613                 frame->curline++;
 614         }
 615         /* See if we filled the frame */
 616         if (frame->curline == maxline) {
 617                 DEBUG(5, "got whole frame");
 618
 619                 frame->frameState = FrameState_Done_Hold;
 620                 frame->curline = 0;
 621                 uvd->curframe = -1;
 622                 uvd->stats.frame_num++;
 623         }
 624 }
 625
 626
 627 static int konicawc_find_fps(int size, int fps)
 628 {
 629         int i;
 630
 631         fps *= 3;
 632         DEBUG(1, "konica_find_fps: size = %d fps = %d", size, fps);
 633         if(fps <= spd_to_fps[size][0])
 634                 return 0;
 635
 636         if(fps >= spd_to_fps[size][MAX_SPEED])
 637                 return MAX_SPEED;
 638
 639         for(i = 0; i < MAX_SPEED; i++) {
 640                 if((fps >= spd_to_fps[size][i]) && (fps <= spd_to_fps[size][i+1])) {
 641                         DEBUG(2, "fps %d between %d and %d", fps, i, i+1);
 642                         if( (fps - spd_to_fps[size][i]) < (spd_to_fps[size][i+1] - fps))
 643                                 return i;
 644                         else
 645                                 return i+1;
 646                 }
 647         }
 648         return MAX_SPEED+1;
 649 }
 650
 651
 652 static int konicawc_set_video_mode(struct uvd *uvd, struct video_window *vw)
 653 {
 654         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 655         int newspeed = cam->speed;
 656         int newsize;
 657         int x = vw->width;
 658         int y = vw->height;
 659         int fps = vw->flags;
 660
 661         if(x > 0 && y > 0) {
 662                 DEBUG(2, "trying to find size %d,%d", x, y);
 663                 for(newsize = 0; newsize <= MAX_FRAME_SIZE; newsize++) {
 664                         if((camera_sizes[newsize].width == x) && (camera_sizes[newsize].height == y))
 665                                 break;
 666                 }
 667         } else {
 668                 newsize = cam->size;
 669         }
 670
 671         if(newsize > MAX_FRAME_SIZE) {
 672                 DEBUG(1, "couldn't find size %d,%d", x, y);
 673                 return -EINVAL;
 674         }
 675
 676         if(fps > 0) {
 677                 DEBUG(1, "trying to set fps to %d", fps);
 678                 newspeed = konicawc_find_fps(newsize, fps);
 679                 DEBUG(1, "find_fps returned %d (%d)", newspeed, spd_to_fps[newsize][newspeed]);
 680         }
 681
 682         if(newspeed > MAX_SPEED)
 683                 return -EINVAL;
 684
 685         DEBUG(1, "setting size to %d speed to %d", newsize, newspeed);
 686         if((newsize == cam->size) && (newspeed == cam->speed)) {
 687                 DEBUG(1, "Nothing to do");
 688                 return 0;
 689         }
 690         DEBUG(0, "setting to  %dx%d @ %d fps", camera_sizes[newsize].width,
 691              camera_sizes[newsize].height, spd_to_fps[newsize][newspeed]/3);
 692
 693         konicawc_stop_data(uvd);
 694         uvd->ifaceAltActive = spd_to_iface[newspeed];
 695         DEBUG(1, "new interface = %d", uvd->ifaceAltActive);
 696         cam->speed = newspeed;
 697
 698         if(cam->size != newsize) {
 699                 cam->size = newsize;
 700                 konicawc_set_camera_size(uvd);
 701         }
 702
 703         /* Flush the input queue and clear any current frame in progress */
 704
 705         RingQueue_Flush(&uvd->dp);
 706         cam->lastframe = -2;
 707         if(uvd->curframe != -1) {
 708                 uvd->frame[uvd->curframe].curline = 0;
 709                 uvd->frame[uvd->curframe].seqRead_Length = 0;
 710                 uvd->frame[uvd->curframe].seqRead_Index = 0;
 711         }
 712
 713         konicawc_start_data(uvd);
 714         return 0;
 715 }
 716
 717
 718 static int konicawc_calculate_fps(struct uvd *uvd)
 719 {
 720         struct konicawc *cam = uvd->user_data;
 721         return spd_to_fps[cam->size][cam->speed]/3;
 722 }
 723
 724
 725 static void konicawc_configure_video(struct uvd *uvd)
 726 {
 727         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 728         u8 buf[2];
 729
 730         memset(&uvd->vpic, 0, sizeof(uvd->vpic));
 731         memset(&uvd->vpic_old, 0x55, sizeof(uvd->vpic_old));
 732
 733         RESTRICT_TO_RANGE(brightness, 0, MAX_BRIGHTNESS);
 734         RESTRICT_TO_RANGE(contrast, 0, MAX_CONTRAST);
 735         RESTRICT_TO_RANGE(saturation, 0, MAX_SATURATION);
 736         RESTRICT_TO_RANGE(sharpness, 0, MAX_SHARPNESS);
 737         RESTRICT_TO_RANGE(whitebal, 0, MAX_WHITEBAL);
 738
 739         cam->brightness = brightness / 11;
 740         cam->contrast = contrast / 11;
 741         cam->saturation = saturation / 11;
 742         cam->sharpness = sharpness / 11;
 743         cam->white_bal = whitebal / 11;
 744
 745         uvd->vpic.colour = 108;
 746         uvd->vpic.hue = 108;
 747         uvd->vpic.brightness = brightness;
 748         uvd->vpic.contrast = contrast;
 749         uvd->vpic.whiteness = whitebal;
 750         uvd->vpic.depth = 6;
 751         uvd->vpic.palette = VIDEO_PALETTE_YUV420P;
 752
 753         memset(&uvd->vcap, 0, sizeof(uvd->vcap));
 754         strcpy(uvd->vcap.name, "Konica Webcam");
 755         uvd->vcap.type = VID_TYPE_CAPTURE;
 756         uvd->vcap.channels = 1;
 757         uvd->vcap.audios = 0;
 758         uvd->vcap.minwidth = camera_sizes[SIZE_160X120].width;
 759         uvd->vcap.minheight = camera_sizes[SIZE_160X120].height;
 760         uvd->vcap.maxwidth = camera_sizes[SIZE_320X240].width;
 761         uvd->vcap.maxheight = camera_sizes[SIZE_320X240].height;
 762
 763         memset(&uvd->vchan, 0, sizeof(uvd->vchan));
 764         uvd->vchan.flags = 0 ;
 765         uvd->vchan.tuners = 0;
 766         uvd->vchan.channel = 0;
 767         uvd->vchan.type = VIDEO_TYPE_CAMERA;
 768         strcpy(uvd->vchan.name, "Camera");
 769
 770         /* Talk to device */
 771         DEBUG(1, "device init");
 772         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 773                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 774         if(!konicawc_get_misc(uvd, 0x3, 0, 0x10, buf, 2))
 775                 DEBUG(2, "3,10 -> %2.2x %2.2x", buf[0], buf[1]);
 776         if(konicawc_set_misc(uvd, 0x2, 0, 0xd))
 777                 DEBUG(2, "2,0,d failed");
 778         DEBUG(1, "setting initial values");
 779 }
 780
 781 static int konicawc_probe(struct usb_interface *intf, const struct usb_device_id *devid)
 782 {
 783         struct usb_device *dev = interface_to_usbdev(intf);
 784         struct uvd *uvd = NULL;
 785         int ix, i, nas;
 786         int actInterface=-1, inactInterface=-1, maxPS=0;
 787         unsigned char video_ep = 0;
 788
 789         DEBUG(1, "konicawc_probe(%p)", intf);
 790
 791         /* We don't handle multi-config cameras */
 792         if (dev->descriptor.bNumConfigurations != 1)
 793                 return -ENODEV;
 794
 795         dev_info(&intf->dev, "Konica Webcam (rev. 0x%04x)\n",
 796                  le16_to_cpu(dev->descriptor.bcdDevice));
 797         RESTRICT_TO_RANGE(speed, 0, MAX_SPEED);
 798
 799         /* Validate found interface: must have one ISO endpoint */
 800         nas = intf->num_altsetting;
 801         if (nas != 8) {
 802                 err("Incorrect number of alternate settings (%d) for this camera!", nas);
 803                 return -ENODEV;
 804         }
 805         /* Validate all alternate settings */
 806         for (ix=0; ix < nas; ix++) {
 807                 const struct usb_host_interface *interface;
 808                 const struct usb_endpoint_descriptor *endpoint;
 809
 810                 interface = &intf->altsetting[ix];
 811                 i = interface->desc.bAlternateSetting;
 812                 if (interface->desc.bNumEndpoints != 2) {
 813                         err("Interface %d. has %u. endpoints!",
 814                             interface->desc.bInterfaceNumber,
 815                             (unsigned)(interface->desc.bNumEndpoints));
 816                         return -ENODEV;
 817                 }
 818                 endpoint = &interface->endpoint[1].desc;
 819                 DEBUG(1, "found endpoint: addr: 0x%2.2x maxps = 0x%4.4x",
 820                     endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize));
 821                 if (video_ep == 0)
 822                         video_ep = endpoint->bEndpointAddress;
 823                 else if (video_ep != endpoint->bEndpointAddress) {
 824                         err("Alternate settings have different endpoint addresses!");
 825                         return -ENODEV;
 826                 }
 827                 if (!usb_endpoint_xfer_isoc(endpoint)) {
 828                         err("Interface %d. has non-ISO endpoint!",
 829                             interface->desc.bInterfaceNumber);
 830                         return -ENODEV;
 831                 }
 832                 if (usb_endpoint_dir_out(endpoint)) {
 833                         err("Interface %d. has ISO OUT endpoint!",
 834                             interface->desc.bInterfaceNumber);
 835                         return -ENODEV;
 836                 }
 837                 if (le16_to_cpu(endpoint->wMaxPacketSize) == 0) {
 838                         if (inactInterface < 0)
 839                                 inactInterface = i;
 840                         else {
 841                                 err("More than one inactive alt. setting!");
 842                                 return -ENODEV;
 843                         }
 844                 } else {
 845                         if (i == spd_to_iface[speed]) {
 846                                 /* This one is the requested one */
 847                                 actInterface = i;
 848                         }
 849                 }
 850                 if (le16_to_cpu(endpoint->wMaxPacketSize) > maxPS)
 851                         maxPS = le16_to_cpu(endpoint->wMaxPacketSize);
 852         }
 853         if(actInterface == -1) {
 854                 err("Cant find required endpoint");
 855                 return -ENODEV;
 856         }
 857
 858         DEBUG(1, "Selecting requested active setting=%d. maxPS=%d.", actInterface, maxPS);
 859
 860         uvd = usbvideo_AllocateDevice(cams);
 861         if (uvd != NULL) {
 862                 struct konicawc *cam = (struct konicawc *)(uvd->user_data);
 863                 /* Here uvd is a fully allocated uvd object */
 864                 for(i = 0; i < USBVIDEO_NUMSBUF; i++) {
 865                         cam->sts_urb[i] = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
 866                         if(cam->sts_urb[i] == NULL) {
 867                                 while(i--) {
 868                                         usb_free_urb(cam->sts_urb[i]);
 869                                 }
 870                                 err("can't allocate urbs");
 871                                 return -ENOMEM;
 872                         }
 873                 }
 874                 cam->speed = speed;
 875                 RESTRICT_TO_RANGE(size, SIZE_160X120, SIZE_320X240);
 876                 cam->width = camera_sizes[size].width;
 877                 cam->height = camera_sizes[size].height;
 878                 cam->size = size;
 879
 880                 uvd->flags = 0;
 881                 uvd->debug = debug;
 882                 uvd->dev = dev;
 883                 uvd->iface = intf->altsetting->desc.bInterfaceNumber;
 884                 uvd->ifaceAltInactive = inactInterface;
 885                 uvd->ifaceAltActive = actInterface;
 886                 uvd->video_endp = video_ep;
 887                 uvd->iso_packet_len = maxPS;
 888                 uvd->paletteBits = 1L << VIDEO_PALETTE_YUV420P;
 889                 uvd->defaultPalette = VIDEO_PALETTE_YUV420P;
 890                 uvd->canvas = VIDEOSIZE(320, 240);
 891                 uvd->videosize = VIDEOSIZE(cam->width, cam->height);
 892
 893                 /* Initialize konicawc specific data */
 894                 konicawc_configure_video(uvd);
 895
 896                 i = usbvideo_RegisterVideoDevice(uvd);
 897                 uvd->max_frame_size = (320 * 240 * 3)/2;
 898                 if (i != 0) {
 899                         err("usbvideo_RegisterVideoDevice() failed.");
 900                         uvd = NULL;
 901                 }
 902
 903                 konicawc_register_input(cam, dev);
 904         }
 905
 906         if (uvd) {
 907                 usb_set_intfdata (intf, uvd);
 908                 return 0;
 909         }
 910         return -EIO;
 911 }
 912
 913
 914 static void konicawc_free_uvd(struct uvd *uvd)
 915 {
 916         int i;
 917         struct konicawc *cam = (struct konicawc *)uvd->user_data;
 918
 919         konicawc_unregister_input(cam);
 920
 921         for (i = 0; i < USBVIDEO_NUMSBUF; i++) {
 922                 usb_free_urb(cam->sts_urb[i]);
 923                 cam->sts_urb[i] = NULL;
 924         }
 925 }
 926
 927
 928 static struct usb_device_id id_table[] = {
 929         { USB_DEVICE(0x04c8, 0x0720) }, /* Intel YC 76 */
 930         { }  /* Terminating entry */
 931 };
 932
 933
 934 static int __init konicawc_init(void)
 935 {
 936         struct usbvideo_cb cbTbl;
 937         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
 938                DRIVER_DESC "\n");
 939         memset(&cbTbl, 0, sizeof(cbTbl));
 940         cbTbl.probe = konicawc_probe;
 941         cbTbl.setupOnOpen = konicawc_setup_on_open;
 942         cbTbl.processData = konicawc_process_isoc;
 943         cbTbl.getFPS = konicawc_calculate_fps;
 944         cbTbl.setVideoMode = konicawc_set_video_mode;
 945         cbTbl.startDataPump = konicawc_start_data;
 946         cbTbl.stopDataPump = konicawc_stop_data;
 947         cbTbl.adjustPicture = konicawc_adjust_picture;
 948         cbTbl.userFree = konicawc_free_uvd;
 949         return usbvideo_register(
 950                 &cams,
 951                 MAX_CAMERAS,
 952                 sizeof(struct konicawc),
 953                 "konicawc",
 954                 &cbTbl,
 955                 THIS_MODULE,
 956                 id_table);
 957 }
 958
 959
 960 static void __exit konicawc_cleanup(void)
 961 {
 962         usbvideo_Deregister(&cams);
 963 }
 964
 965
 966 MODULE_DEVICE_TABLE(usb, id_table);
 967
 968 MODULE_LICENSE("GPL");
 969 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
 970 MODULE_DESCRIPTION(DRIVER_DESC);
 971 module_param(speed, int, 0);
 972 MODULE_PARM_DESC(speed, "Initial speed: 0 (slowest) - 6 (fastest)");
 973 module_param(size, int, 0);
 974 MODULE_PARM_DESC(size, "Initial Size 0: 160x120 1: 160x136 2: 176x144 3: 320x240");
 975 module_param(brightness, int, 0);
 976 MODULE_PARM_DESC(brightness, "Initial brightness 0 - 108");
 977 module_param(contrast, int, 0);
 978 MODULE_PARM_DESC(contrast, "Initial contrast 0 - 108");
 979 module_param(saturation, int, 0);
 980 MODULE_PARM_DESC(saturation, "Initial saturation 0 - 108");
 981 module_param(sharpness, int, 0);
 982 MODULE_PARM_DESC(sharpness, "Initial brightness 0 - 108");
 983 module_param(whitebal, int, 0);
 984 MODULE_PARM_DESC(whitebal, "Initial white balance 0 - 363");
 985
 986 #ifdef CONFIG_USB_DEBUG
 987 module_param(debug, int, S_IRUGO | S_IWUSR);
 988 MODULE_PARM_DESC(debug, "Debug level: 0-9 (default=0)");
 989 #endif
 990
 991 module_init(konicawc_init);
 992 module_exit(konicawc_cleanup);