drivers/media/video/pwc/pwc-v4l.c

   1 /* Linux driver for Philips webcam
   2    USB and Video4Linux interface part.
   3    (C) 1999-2004 Nemosoft Unv.
   4    (C) 2004-2006 Luc Saillard (luc@saillard.org)
   5    (C) 2011 Hans de Goede <hdegoede@redhat.com>
   6
   7    NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
   8    driver and thus may have bugs that are not present in the original version.
   9    Please send bug reports and support requests to <luc@saillard.org>.
  10    The decompression routines have been implemented by reverse-engineering the
  11    Nemosoft binary pwcx module. Caveat emptor.
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  26
  27 */
  28
  29 #include <linux/errno.h>
  30 #include <linux/init.h>
  31 #include <linux/mm.h>
  32 #include <linux/module.h>
  33 #include <linux/poll.h>
  34 #include <linux/vmalloc.h>
  35 #include <linux/jiffies.h>
  36 #include <asm/io.h>
  37
  38 #include "pwc.h"
  39
  40 #define PWC_CID_CUSTOM(ctrl) ((V4L2_CID_USER_BASE | 0xf000) + custom_ ## ctrl)
  41
  42 static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
  43 static int pwc_s_ctrl(struct v4l2_ctrl *ctrl);
  44
  45 static const struct v4l2_ctrl_ops pwc_ctrl_ops = {
  46         .g_volatile_ctrl = pwc_g_volatile_ctrl,
  47         .s_ctrl = pwc_s_ctrl,
  48 };
  49
  50 enum { awb_indoor, awb_outdoor, awb_fl, awb_manual, awb_auto };
  51 enum { custom_autocontour, custom_contour, custom_noise_reduction,
  52         custom_save_user, custom_restore_user, custom_restore_factory };
  53
  54 const char * const pwc_auto_whitebal_qmenu[] = {
  55         "Indoor (Incandescant Lighting) Mode",
  56         "Outdoor (Sunlight) Mode",
  57         "Indoor (Fluorescent Lighting) Mode",
  58         "Manual Mode",
  59         "Auto Mode",
  60         NULL
  61 };
  62
  63 static const struct v4l2_ctrl_config pwc_auto_white_balance_cfg = {
  64         .ops    = &pwc_ctrl_ops,
  65         .id     = V4L2_CID_AUTO_WHITE_BALANCE,
  66         .type   = V4L2_CTRL_TYPE_MENU,
  67         .max    = awb_auto,
  68         .qmenu  = pwc_auto_whitebal_qmenu,
  69 };
  70
  71 static const struct v4l2_ctrl_config pwc_autocontour_cfg = {
  72         .ops    = &pwc_ctrl_ops,
  73         .id     = PWC_CID_CUSTOM(autocontour),
  74         .type   = V4L2_CTRL_TYPE_BOOLEAN,
  75         .name   = "Auto contour",
  76         .min    = 0,
  77         .max    = 1,
  78         .step   = 1,
  79 };
  80
  81 static const struct v4l2_ctrl_config pwc_contour_cfg = {
  82         .ops    = &pwc_ctrl_ops,
  83         .id     = PWC_CID_CUSTOM(contour),
  84         .type   = V4L2_CTRL_TYPE_INTEGER,
  85         .name   = "Contour",
  86         .min    = 0,
  87         .max    = 63,
  88         .step   = 1,
  89 };
  90
  91 static const struct v4l2_ctrl_config pwc_backlight_cfg = {
  92         .ops    = &pwc_ctrl_ops,
  93         .id     = V4L2_CID_BACKLIGHT_COMPENSATION,
  94         .type   = V4L2_CTRL_TYPE_BOOLEAN,
  95         .min    = 0,
  96         .max    = 1,
  97         .step   = 1,
  98 };
  99
 100 static const struct v4l2_ctrl_config pwc_flicker_cfg = {
 101         .ops    = &pwc_ctrl_ops,
 102         .id     = V4L2_CID_BAND_STOP_FILTER,
 103         .type   = V4L2_CTRL_TYPE_BOOLEAN,
 104         .min    = 0,
 105         .max    = 1,
 106         .step   = 1,
 107 };
 108
 109 static const struct v4l2_ctrl_config pwc_noise_reduction_cfg = {
 110         .ops    = &pwc_ctrl_ops,
 111         .id     = PWC_CID_CUSTOM(noise_reduction),
 112         .type   = V4L2_CTRL_TYPE_INTEGER,
 113         .name   = "Dynamic Noise Reduction",
 114         .min    = 0,
 115         .max    = 3,
 116         .step   = 1,
 117 };
 118
 119 static const struct v4l2_ctrl_config pwc_save_user_cfg = {
 120         .ops    = &pwc_ctrl_ops,
 121         .id     = PWC_CID_CUSTOM(save_user),
 122         .type   = V4L2_CTRL_TYPE_BUTTON,
 123         .name    = "Save User Settings",
 124 };
 125
 126 static const struct v4l2_ctrl_config pwc_restore_user_cfg = {
 127         .ops    = &pwc_ctrl_ops,
 128         .id     = PWC_CID_CUSTOM(restore_user),
 129         .type   = V4L2_CTRL_TYPE_BUTTON,
 130         .name    = "Restore User Settings",
 131 };
 132
 133 static const struct v4l2_ctrl_config pwc_restore_factory_cfg = {
 134         .ops    = &pwc_ctrl_ops,
 135         .id     = PWC_CID_CUSTOM(restore_factory),
 136         .type   = V4L2_CTRL_TYPE_BUTTON,
 137         .name    = "Restore Factory Settings",
 138 };
 139
 140 int pwc_init_controls(struct pwc_device *pdev)
 141 {
 142         struct v4l2_ctrl_handler *hdl;
 143         struct v4l2_ctrl_config cfg;
 144         int r, def;
 145
 146         hdl = &pdev->ctrl_handler;
 147         r = v4l2_ctrl_handler_init(hdl, 20);
 148         if (r)
 149                 return r;
 150
 151         /* Brightness, contrast, saturation, gamma */
 152         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, BRIGHTNESS_FORMATTER, &def);
 153         if (r || def > 127)
 154                 def = 63;
 155         pdev->brightness = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 156                                 V4L2_CID_BRIGHTNESS, 0, 127, 1, def);
 157
 158         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, CONTRAST_FORMATTER, &def);
 159         if (r || def > 63)
 160                 def = 31;
 161         pdev->contrast = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 162                                 V4L2_CID_CONTRAST, 0, 63, 1, def);
 163
 164         if (pdev->type >= 675) {
 165                 if (pdev->type < 730)
 166                         pdev->saturation_fmt = SATURATION_MODE_FORMATTER2;
 167                 else
 168                         pdev->saturation_fmt = SATURATION_MODE_FORMATTER1;
 169                 r = pwc_get_s8_ctrl(pdev, GET_CHROM_CTL, pdev->saturation_fmt,
 170                                     &def);
 171                 if (r || def < -100 || def > 100)
 172                         def = 0;
 173                 pdev->saturation = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 174                                       V4L2_CID_SATURATION, -100, 100, 1, def);
 175         }
 176
 177         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, GAMMA_FORMATTER, &def);
 178         if (r || def > 31)
 179                 def = 15;
 180         pdev->gamma = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 181                                 V4L2_CID_GAMMA, 0, 31, 1, def);
 182
 183         /* auto white balance, red gain, blue gain */
 184         r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, WB_MODE_FORMATTER, &def);
 185         if (r || def > awb_auto)
 186                 def = awb_auto;
 187         cfg = pwc_auto_white_balance_cfg;
 188         cfg.name = v4l2_ctrl_get_name(cfg.id);
 189         cfg.def = def;
 190         pdev->auto_white_balance = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
 191         /* check auto controls to avoid NULL deref in v4l2_ctrl_auto_cluster */
 192         if (!pdev->auto_white_balance)
 193                 return hdl->error;
 194
 195         r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
 196                             PRESET_MANUAL_RED_GAIN_FORMATTER, &def);
 197         if (r)
 198                 def = 127;
 199         pdev->red_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 200                                 V4L2_CID_RED_BALANCE, 0, 255, 1, def);
 201
 202         r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
 203                             PRESET_MANUAL_BLUE_GAIN_FORMATTER, &def);
 204         if (r)
 205                 def = 127;
 206         pdev->blue_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 207                                 V4L2_CID_BLUE_BALANCE, 0, 255, 1, def);
 208
 209         v4l2_ctrl_auto_cluster(3, &pdev->auto_white_balance, awb_manual,
 210                                pdev->auto_white_balance->cur.val == awb_auto);
 211
 212         /* autogain, gain */
 213         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AGC_MODE_FORMATTER, &def);
 214         if (r || (def != 0 && def != 0xff))
 215                 def = 0;
 216         /* Note a register value if 0 means auto gain is on */
 217         pdev->autogain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 218                                 V4L2_CID_AUTOGAIN, 0, 1, 1, def == 0);
 219         if (!pdev->autogain)
 220                 return hdl->error;
 221
 222         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_AGC_FORMATTER, &def);
 223         if (r || def > 63)
 224                 def = 31;
 225         pdev->gain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 226                                 V4L2_CID_GAIN, 0, 63, 1, def);
 227
 228         /* auto exposure, exposure */
 229         if (DEVICE_USE_CODEC2(pdev->type)) {
 230                 r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, SHUTTER_MODE_FORMATTER,
 231                                     &def);
 232                 if (r || (def != 0 && def != 0xff))
 233                         def = 0;
 234                 /*
 235                  * def = 0 auto, def = ff manual
 236                  * menu idx 0 = auto, idx 1 = manual
 237                  */
 238                 pdev->exposure_auto = v4l2_ctrl_new_std_menu(hdl,
 239                                         &pwc_ctrl_ops,
 240                                         V4L2_CID_EXPOSURE_AUTO,
 241                                         1, 0, def != 0);
 242                 if (!pdev->exposure_auto)
 243                         return hdl->error;
 244
 245                 /* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */
 246                 r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
 247                                      READ_SHUTTER_FORMATTER, &def);
 248                 if (r || def > 655)
 249                         def = 655;
 250                 pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 251                                         V4L2_CID_EXPOSURE, 0, 655, 1, def);
 252                 /* CODEC2: separate auto gain & auto exposure */
 253                 v4l2_ctrl_auto_cluster(2, &pdev->autogain, 0, true);
 254                 v4l2_ctrl_auto_cluster(2, &pdev->exposure_auto,
 255                                        V4L2_EXPOSURE_MANUAL, true);
 256         } else if (DEVICE_USE_CODEC3(pdev->type)) {
 257                 /* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */
 258                 r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
 259                                      READ_SHUTTER_FORMATTER, &def);
 260                 if (r || def > 255)
 261                         def = 255;
 262                 pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
 263                                         V4L2_CID_EXPOSURE, 0, 255, 1, def);
 264                 /* CODEC3: both gain and exposure controlled by autogain */
 265                 pdev->autogain_expo_cluster[0] = pdev->autogain;
 266                 pdev->autogain_expo_cluster[1] = pdev->gain;
 267                 pdev->autogain_expo_cluster[2] = pdev->exposure;
 268                 v4l2_ctrl_auto_cluster(3, pdev->autogain_expo_cluster,
 269                                        0, true);
 270         }
 271
 272         /* color / bw setting */
 273         r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, COLOUR_MODE_FORMATTER,
 274                          &def);
 275         if (r || (def != 0 && def != 0xff))
 276                 def = 0xff;
 277         /* def = 0 bw, def = ff color, menu idx 0 = color, idx 1 = bw */
 278         pdev->colorfx = v4l2_ctrl_new_std_menu(hdl, &pwc_ctrl_ops,
 279                                 V4L2_CID_COLORFX, 1, 0, def == 0);
 280
 281         /* autocontour, contour */
 282         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &def);
 283         if (r || (def != 0 && def != 0xff))
 284                 def = 0;
 285         cfg = pwc_autocontour_cfg;
 286         cfg.def = def == 0;
 287         pdev->autocontour = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
 288         if (!pdev->autocontour)
 289                 return hdl->error;
 290
 291         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &def);
 292         if (r || def > 63)
 293                 def = 31;
 294         cfg = pwc_contour_cfg;
 295         cfg.def = def;
 296         pdev->contour = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
 297
 298         v4l2_ctrl_auto_cluster(2, &pdev->autocontour, 0, false);
 299
 300         /* backlight */
 301         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
 302                             BACK_LIGHT_COMPENSATION_FORMATTER, &def);
 303         if (r || (def != 0 && def != 0xff))
 304                 def = 0;
 305         cfg = pwc_backlight_cfg;
 306         cfg.name = v4l2_ctrl_get_name(cfg.id);
 307         cfg.def = def == 0;
 308         pdev->backlight = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
 309
 310         /* flikker rediction */
 311         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
 312                             FLICKERLESS_MODE_FORMATTER, &def);
 313         if (r || (def != 0 && def != 0xff))
 314                 def = 0;
 315         cfg = pwc_flicker_cfg;
 316         cfg.name = v4l2_ctrl_get_name(cfg.id);
 317         cfg.def = def == 0;
 318         pdev->flicker = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
 319
 320         /* Dynamic noise reduction */
 321         r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
 322                             DYNAMIC_NOISE_CONTROL_FORMATTER, &def);
 323         if (r || def > 3)
 324                 def = 2;
 325         cfg = pwc_noise_reduction_cfg;
 326         cfg.def = def;
 327         pdev->noise_reduction = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
 328
 329         /* Save / Restore User / Factory Settings */
 330         pdev->save_user = v4l2_ctrl_new_custom(hdl, &pwc_save_user_cfg, NULL);
 331         pdev->restore_user = v4l2_ctrl_new_custom(hdl, &pwc_restore_user_cfg,
 332                                                   NULL);
 333         if (pdev->restore_user)
 334                 pdev->restore_user->flags = V4L2_CTRL_FLAG_UPDATE;
 335         pdev->restore_factory = v4l2_ctrl_new_custom(hdl,
 336                                                      &pwc_restore_factory_cfg,
 337                                                      NULL);
 338         if (pdev->restore_factory)
 339                 pdev->restore_factory->flags = V4L2_CTRL_FLAG_UPDATE;
 340
 341         return hdl->error;
 342 }
 343
 344 static void pwc_vidioc_fill_fmt(const struct pwc_device *pdev, struct v4l2_format *f)
 345 {
 346         memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
 347         f->fmt.pix.width        = pdev->view.x;
 348         f->fmt.pix.height       = pdev->view.y;
 349         f->fmt.pix.field        = V4L2_FIELD_NONE;
 350         if (pdev->pixfmt == V4L2_PIX_FMT_YUV420) {
 351                 f->fmt.pix.pixelformat  = V4L2_PIX_FMT_YUV420;
 352                 f->fmt.pix.bytesperline = (f->fmt.pix.width * 3)/2;
 353                 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 354         } else {
 355                 /* vbandlength contains 4 lines ...  */
 356                 f->fmt.pix.bytesperline = pdev->vbandlength/4;
 357                 f->fmt.pix.sizeimage = pdev->frame_size + sizeof(struct pwc_raw_frame);
 358                 if (DEVICE_USE_CODEC1(pdev->type))
 359                         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_PWC1;
 360                 else
 361                         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_PWC2;
 362         }
 363         PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() "
 364                         "width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n",
 365                         f->fmt.pix.width,
 366                         f->fmt.pix.height,
 367                         f->fmt.pix.bytesperline,
 368                         f->fmt.pix.sizeimage,
 369                         (f->fmt.pix.pixelformat)&255,
 370                         (f->fmt.pix.pixelformat>>8)&255,
 371                         (f->fmt.pix.pixelformat>>16)&255,
 372                         (f->fmt.pix.pixelformat>>24)&255);
 373 }
 374
 375 /* ioctl(VIDIOC_TRY_FMT) */
 376 static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f)
 377 {
 378         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 379                 PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n");
 380                 return -EINVAL;
 381         }
 382
 383         switch (f->fmt.pix.pixelformat) {
 384                 case V4L2_PIX_FMT_YUV420:
 385                         break;
 386                 case V4L2_PIX_FMT_PWC1:
 387                         if (DEVICE_USE_CODEC23(pdev->type)) {
 388                                 PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n");
 389                                 return -EINVAL;
 390                         }
 391                         break;
 392                 case V4L2_PIX_FMT_PWC2:
 393                         if (DEVICE_USE_CODEC1(pdev->type)) {
 394                                 PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n");
 395                                 return -EINVAL;
 396                         }
 397                         break;
 398                 default:
 399                         PWC_DEBUG_IOCTL("Unsupported pixel format\n");
 400                         return -EINVAL;
 401
 402         }
 403
 404         if (f->fmt.pix.width > pdev->view_max.x)
 405                 f->fmt.pix.width = pdev->view_max.x;
 406         else if (f->fmt.pix.width < pdev->view_min.x)
 407                 f->fmt.pix.width = pdev->view_min.x;
 408
 409         if (f->fmt.pix.height > pdev->view_max.y)
 410                 f->fmt.pix.height = pdev->view_max.y;
 411         else if (f->fmt.pix.height < pdev->view_min.y)
 412                 f->fmt.pix.height = pdev->view_min.y;
 413
 414         return 0;
 415 }
 416
 417 /* ioctl(VIDIOC_SET_FMT) */
 418
 419 static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
 420 {
 421         struct pwc_device *pdev = video_drvdata(file);
 422         int ret, fps, snapshot, compression, pixelformat;
 423
 424         if (!pdev->udev)
 425                 return -ENODEV;
 426
 427         if (pdev->capt_file != NULL &&
 428             pdev->capt_file != file)
 429                 return -EBUSY;
 430
 431         pdev->capt_file = file;
 432
 433         ret = pwc_vidioc_try_fmt(pdev, f);
 434         if (ret<0)
 435                 return ret;
 436
 437         pixelformat = f->fmt.pix.pixelformat;
 438         compression = pdev->vcompression;
 439         snapshot = 0;
 440         fps = pdev->vframes;
 441         if (f->fmt.pix.priv) {
 442                 compression = (f->fmt.pix.priv & PWC_QLT_MASK) >> PWC_QLT_SHIFT;
 443                 snapshot = !!(f->fmt.pix.priv & PWC_FPS_SNAPSHOT);
 444                 fps = (f->fmt.pix.priv & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT;
 445                 if (fps == 0)
 446                         fps = pdev->vframes;
 447         }
 448
 449         if (pixelformat != V4L2_PIX_FMT_YUV420 &&
 450             pixelformat != V4L2_PIX_FMT_PWC1 &&
 451             pixelformat != V4L2_PIX_FMT_PWC2)
 452                 return -EINVAL;
 453
 454         if (vb2_is_streaming(&pdev->vb_queue))
 455                 return -EBUSY;
 456
 457         PWC_DEBUG_IOCTL("Trying to set format to: width=%d height=%d fps=%d "
 458                         "compression=%d snapshot=%d format=%c%c%c%c\n",
 459                         f->fmt.pix.width, f->fmt.pix.height, fps,
 460                         compression, snapshot,
 461                         (pixelformat)&255,
 462                         (pixelformat>>8)&255,
 463                         (pixelformat>>16)&255,
 464                         (pixelformat>>24)&255);
 465
 466         ret = pwc_set_video_mode(pdev,
 467                                  f->fmt.pix.width,
 468                                  f->fmt.pix.height,
 469                                  fps,
 470                                  compression,
 471                                  snapshot);
 472
 473         PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret);
 474
 475         if (ret)
 476                 return ret;
 477
 478         pdev->pixfmt = pixelformat;
 479
 480         pwc_vidioc_fill_fmt(pdev, f);
 481
 482         return 0;
 483
 484 }
 485
 486 static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
 487 {
 488         struct pwc_device *pdev = video_drvdata(file);
 489
 490         if (!pdev->udev)
 491                 return -ENODEV;
 492
 493         strcpy(cap->driver, PWC_NAME);
 494         strlcpy(cap->card, pdev->vdev.name, sizeof(cap->card));
 495         usb_make_path(pdev->udev, cap->bus_info, sizeof(cap->bus_info));
 496         cap->capabilities =
 497                 V4L2_CAP_VIDEO_CAPTURE  |
 498                 V4L2_CAP_STREAMING      |
 499                 V4L2_CAP_READWRITE;
 500         return 0;
 501 }
 502
 503 static int pwc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
 504 {
 505         if (i->index)   /* Only one INPUT is supported */
 506                 return -EINVAL;
 507
 508         strcpy(i->name, "usb");
 509         return 0;
 510 }
 511
 512 static int pwc_g_input(struct file *file, void *fh, unsigned int *i)
 513 {
 514         *i = 0;
 515         return 0;
 516 }
 517
 518 static int pwc_s_input(struct file *file, void *fh, unsigned int i)
 519 {
 520         return i ? -EINVAL : 0;
 521 }
 522
 523 static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 524 {
 525         struct pwc_device *pdev =
 526                 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
 527         int ret = 0;
 528
 529         if (!pdev->udev)
 530                 return -ENODEV;
 531
 532         switch (ctrl->id) {
 533         case V4L2_CID_AUTO_WHITE_BALANCE:
 534                 if (pdev->color_bal_valid && time_before(jiffies,
 535                                 pdev->last_color_bal_update + HZ / 4)) {
 536                         pdev->red_balance->val  = pdev->last_red_balance;
 537                         pdev->blue_balance->val = pdev->last_blue_balance;
 538                         break;
 539                 }
 540                 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 541                                       READ_RED_GAIN_FORMATTER,
 542                                       &pdev->red_balance->val);
 543                 if (ret)
 544                         break;
 545                 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 546                                       READ_BLUE_GAIN_FORMATTER,
 547                                       &pdev->blue_balance->val);
 548                 if (ret)
 549                         break;
 550                 pdev->last_red_balance  = pdev->red_balance->val;
 551                 pdev->last_blue_balance = pdev->blue_balance->val;
 552                 pdev->last_color_bal_update = jiffies;
 553                 pdev->color_bal_valid = true;
 554                 break;
 555         case V4L2_CID_AUTOGAIN:
 556                 if (pdev->gain_valid && time_before(jiffies,
 557                                 pdev->last_gain_update + HZ / 4)) {
 558                         pdev->gain->val = pdev->last_gain;
 559                         break;
 560                 }
 561                 ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 562                                       READ_AGC_FORMATTER, &pdev->gain->val);
 563                 if (ret)
 564                         break;
 565                 pdev->last_gain = pdev->gain->val;
 566                 pdev->last_gain_update = jiffies;
 567                 pdev->gain_valid = true;
 568                 if (!DEVICE_USE_CODEC3(pdev->type))
 569                         break;
 570                 /* Fall through for CODEC3 where autogain also controls expo */
 571         case V4L2_CID_EXPOSURE_AUTO:
 572                 if (pdev->exposure_valid && time_before(jiffies,
 573                                 pdev->last_exposure_update + HZ / 4)) {
 574                         pdev->exposure->val = pdev->last_exposure;
 575                         break;
 576                 }
 577                 ret = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
 578                                        READ_SHUTTER_FORMATTER,
 579                                        &pdev->exposure->val);
 580                 if (ret)
 581                         break;
 582                 pdev->last_exposure = pdev->exposure->val;
 583                 pdev->last_exposure_update = jiffies;
 584                 pdev->exposure_valid = true;
 585                 break;
 586         default:
 587                 ret = -EINVAL;
 588         }
 589
 590         if (ret)
 591                 PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret);
 592
 593         return ret;
 594 }
 595
 596 static int pwc_set_awb(struct pwc_device *pdev)
 597 {
 598         int ret = 0;
 599
 600         if (pdev->auto_white_balance->is_new) {
 601                 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
 602                                       WB_MODE_FORMATTER,
 603                                       pdev->auto_white_balance->val);
 604                 if (ret)
 605                         return ret;
 606
 607                 /* Update val when coming from auto or going to a preset */
 608                 if (pdev->red_balance->is_volatile ||
 609                     pdev->auto_white_balance->val == awb_indoor ||
 610                     pdev->auto_white_balance->val == awb_outdoor ||
 611                     pdev->auto_white_balance->val == awb_fl) {
 612                         if (!pdev->red_balance->is_new)
 613                                 pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 614                                         READ_RED_GAIN_FORMATTER,
 615                                         &pdev->red_balance->val);
 616                         if (!pdev->blue_balance->is_new)
 617                                 pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 618                                         READ_BLUE_GAIN_FORMATTER,
 619                                         &pdev->blue_balance->val);
 620                 }
 621                 if (pdev->auto_white_balance->val == awb_auto) {
 622                         pdev->red_balance->is_volatile = true;
 623                         pdev->blue_balance->is_volatile = true;
 624                         pdev->color_bal_valid = false; /* Force cache update */
 625                 } else {
 626                         pdev->red_balance->is_volatile = false;
 627                         pdev->blue_balance->is_volatile = false;
 628                 }
 629         }
 630
 631         if (ret == 0 && pdev->red_balance->is_new) {
 632                 if (pdev->auto_white_balance->val != awb_manual)
 633                         return -EBUSY;
 634                 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
 635                                       PRESET_MANUAL_RED_GAIN_FORMATTER,
 636                                       pdev->red_balance->val);
 637         }
 638
 639         if (ret == 0 && pdev->blue_balance->is_new) {
 640                 if (pdev->auto_white_balance->val != awb_manual)
 641                         return -EBUSY;
 642                 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
 643                                       PRESET_MANUAL_BLUE_GAIN_FORMATTER,
 644                                       pdev->blue_balance->val);
 645         }
 646         return ret;
 647 }
 648
 649 /* For CODEC2 models which have separate autogain and auto exposure */
 650 static int pwc_set_autogain(struct pwc_device *pdev)
 651 {
 652         int ret = 0;
 653
 654         if (pdev->autogain->is_new) {
 655                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 656                                       AGC_MODE_FORMATTER,
 657                                       pdev->autogain->val ? 0 : 0xff);
 658                 if (ret)
 659                         return ret;
 660                 if (pdev->autogain->val)
 661                         pdev->gain_valid = false; /* Force cache update */
 662                 else if (!pdev->gain->is_new)
 663                         pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 664                                         READ_AGC_FORMATTER,
 665                                         &pdev->gain->val);
 666         }
 667         if (ret == 0 && pdev->gain->is_new) {
 668                 if (pdev->autogain->val)
 669                         return -EBUSY;
 670                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 671                                       PRESET_AGC_FORMATTER,
 672                                       pdev->gain->val);
 673         }
 674         return ret;
 675 }
 676
 677 /* For CODEC2 models which have separate autogain and auto exposure */
 678 static int pwc_set_exposure_auto(struct pwc_device *pdev)
 679 {
 680         int ret = 0;
 681         int is_auto = pdev->exposure_auto->val == V4L2_EXPOSURE_AUTO;
 682
 683         if (pdev->exposure_auto->is_new) {
 684                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 685                                       SHUTTER_MODE_FORMATTER,
 686                                       is_auto ? 0 : 0xff);
 687                 if (ret)
 688                         return ret;
 689                 if (is_auto)
 690                         pdev->exposure_valid = false; /* Force cache update */
 691                 else if (!pdev->exposure->is_new)
 692                         pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
 693                                          READ_SHUTTER_FORMATTER,
 694                                          &pdev->exposure->val);
 695         }
 696         if (ret == 0 && pdev->exposure->is_new) {
 697                 if (is_auto)
 698                         return -EBUSY;
 699                 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
 700                                        PRESET_SHUTTER_FORMATTER,
 701                                        pdev->exposure->val);
 702         }
 703         return ret;
 704 }
 705
 706 /* For CODEC3 models which have autogain controlling both gain and exposure */
 707 static int pwc_set_autogain_expo(struct pwc_device *pdev)
 708 {
 709         int ret = 0;
 710
 711         if (pdev->autogain->is_new) {
 712                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 713                                       AGC_MODE_FORMATTER,
 714                                       pdev->autogain->val ? 0 : 0xff);
 715                 if (ret)
 716                         return ret;
 717                 if (pdev->autogain->val) {
 718                         pdev->gain_valid     = false; /* Force cache update */
 719                         pdev->exposure_valid = false; /* Force cache update */
 720                 } else {
 721                         if (!pdev->gain->is_new)
 722                                 pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
 723                                                 READ_AGC_FORMATTER,
 724                                                 &pdev->gain->val);
 725                         if (!pdev->exposure->is_new)
 726                                 pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
 727                                                  READ_SHUTTER_FORMATTER,
 728                                                  &pdev->exposure->val);
 729                 }
 730         }
 731         if (ret == 0 && pdev->gain->is_new) {
 732                 if (pdev->autogain->val)
 733                         return -EBUSY;
 734                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 735                                       PRESET_AGC_FORMATTER,
 736                                       pdev->gain->val);
 737         }
 738         if (ret == 0 && pdev->exposure->is_new) {
 739                 if (pdev->autogain->val)
 740                         return -EBUSY;
 741                 ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
 742                                        PRESET_SHUTTER_FORMATTER,
 743                                        pdev->exposure->val);
 744         }
 745         return ret;
 746 }
 747
 748 static int pwc_s_ctrl(struct v4l2_ctrl *ctrl)
 749 {
 750         struct pwc_device *pdev =
 751                 container_of(ctrl->handler, struct pwc_device, ctrl_handler);
 752         int ret = 0;
 753
 754         if (!pdev->udev)
 755                 return -ENODEV;
 756
 757         switch (ctrl->id) {
 758         case V4L2_CID_BRIGHTNESS:
 759                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 760                                       BRIGHTNESS_FORMATTER, ctrl->val);
 761                 break;
 762         case V4L2_CID_CONTRAST:
 763                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 764                                       CONTRAST_FORMATTER, ctrl->val);
 765                 break;
 766         case V4L2_CID_SATURATION:
 767                 ret = pwc_set_s8_ctrl(pdev, SET_CHROM_CTL,
 768                                       pdev->saturation_fmt, ctrl->val);
 769                 break;
 770         case V4L2_CID_GAMMA:
 771                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 772                                       GAMMA_FORMATTER, ctrl->val);
 773                 break;
 774         case V4L2_CID_AUTO_WHITE_BALANCE:
 775                 ret = pwc_set_awb(pdev);
 776                 break;
 777         case V4L2_CID_AUTOGAIN:
 778                 if (DEVICE_USE_CODEC2(pdev->type))
 779                         ret = pwc_set_autogain(pdev);
 780                 else if (DEVICE_USE_CODEC3(pdev->type))
 781                         ret = pwc_set_autogain_expo(pdev);
 782                 else
 783                         ret = -EINVAL;
 784                 break;
 785         case V4L2_CID_EXPOSURE_AUTO:
 786                 if (DEVICE_USE_CODEC2(pdev->type))
 787                         ret = pwc_set_exposure_auto(pdev);
 788                 else
 789                         ret = -EINVAL;
 790                 break;
 791         case V4L2_CID_COLORFX:
 792                 ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
 793                                       COLOUR_MODE_FORMATTER,
 794                                       ctrl->val ? 0 : 0xff);
 795                 break;
 796         case PWC_CID_CUSTOM(autocontour):
 797                 if (pdev->autocontour->is_new) {
 798                         ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 799                                         AUTO_CONTOUR_FORMATTER,
 800                                         pdev->autocontour->val ? 0 : 0xff);
 801                 }
 802                 if (ret == 0 && pdev->contour->is_new) {
 803                         if (pdev->autocontour->val) {
 804                                 ret = -EBUSY;
 805                                 break;
 806                         }
 807                         ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 808                                               PRESET_CONTOUR_FORMATTER,
 809                                               pdev->contour->val);
 810                 }
 811                 break;
 812         case V4L2_CID_BACKLIGHT_COMPENSATION:
 813                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 814                                       BACK_LIGHT_COMPENSATION_FORMATTER,
 815                                       ctrl->val ? 0 : 0xff);
 816                 break;
 817         case V4L2_CID_BAND_STOP_FILTER:
 818                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 819                                       FLICKERLESS_MODE_FORMATTER,
 820                                       ctrl->val ? 0 : 0xff);
 821                 break;
 822         case PWC_CID_CUSTOM(noise_reduction):
 823                 ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
 824                                       DYNAMIC_NOISE_CONTROL_FORMATTER,
 825                                       ctrl->val);
 826                 break;
 827         case PWC_CID_CUSTOM(save_user):
 828                 ret = pwc_button_ctrl(pdev, SAVE_USER_DEFAULTS_FORMATTER);
 829                 break;
 830         case PWC_CID_CUSTOM(restore_user):
 831                 ret = pwc_button_ctrl(pdev, RESTORE_USER_DEFAULTS_FORMATTER);
 832                 break;
 833         case PWC_CID_CUSTOM(restore_factory):
 834                 ret = pwc_button_ctrl(pdev,
 835                                       RESTORE_FACTORY_DEFAULTS_FORMATTER);
 836                 break;
 837         default:
 838                 ret = -EINVAL;
 839         }
 840
 841         if (ret)
 842                 PWC_ERROR("s_ctrl %s error %d\n", ctrl->name, ret);
 843
 844         return ret;
 845 }
 846
 847 static int pwc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
 848 {
 849         struct pwc_device *pdev = video_drvdata(file);
 850
 851         /* We only support two format: the raw format, and YUV */
 852         switch (f->index) {
 853         case 0:
 854                 /* RAW format */
 855                 f->pixelformat = pdev->type <= 646 ? V4L2_PIX_FMT_PWC1 : V4L2_PIX_FMT_PWC2;
 856                 f->flags = V4L2_FMT_FLAG_COMPRESSED;
 857                 strlcpy(f->description, "Raw Philips Webcam", sizeof(f->description));
 858                 break;
 859         case 1:
 860                 f->pixelformat = V4L2_PIX_FMT_YUV420;
 861                 strlcpy(f->description, "4:2:0, planar, Y-Cb-Cr", sizeof(f->description));
 862                 break;
 863         default:
 864                 return -EINVAL;
 865         }
 866         return 0;
 867 }
 868
 869 static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
 870 {
 871         struct pwc_device *pdev = video_drvdata(file);
 872
 873         PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",
 874                         pdev->image.x, pdev->image.y);
 875         pwc_vidioc_fill_fmt(pdev, f);
 876         return 0;
 877 }
 878
 879 static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
 880 {
 881         struct pwc_device *pdev = video_drvdata(file);
 882
 883         return pwc_vidioc_try_fmt(pdev, f);
 884 }
 885
 886 static int pwc_reqbufs(struct file *file, void *fh,
 887                        struct v4l2_requestbuffers *rb)
 888 {
 889         struct pwc_device *pdev = video_drvdata(file);
 890
 891         if (pdev->capt_file != NULL &&
 892             pdev->capt_file != file)
 893                 return -EBUSY;
 894
 895         pdev->capt_file = file;
 896
 897         return vb2_reqbufs(&pdev->vb_queue, rb);
 898 }
 899
 900 static int pwc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf)
 901 {
 902         struct pwc_device *pdev = video_drvdata(file);
 903
 904         return vb2_querybuf(&pdev->vb_queue, buf);
 905 }
 906
 907 static int pwc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
 908 {
 909         struct pwc_device *pdev = video_drvdata(file);
 910
 911         if (!pdev->udev)
 912                 return -ENODEV;
 913
 914         if (pdev->capt_file != file)
 915                 return -EBUSY;
 916
 917         return vb2_qbuf(&pdev->vb_queue, buf);
 918 }
 919
 920 static int pwc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
 921 {
 922         struct pwc_device *pdev = video_drvdata(file);
 923
 924         if (!pdev->udev)
 925                 return -ENODEV;
 926
 927         if (pdev->capt_file != file)
 928                 return -EBUSY;
 929
 930         return vb2_dqbuf(&pdev->vb_queue, buf, file->f_flags & O_NONBLOCK);
 931 }
 932
 933 static int pwc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
 934 {
 935         struct pwc_device *pdev = video_drvdata(file);
 936
 937         if (!pdev->udev)
 938                 return -ENODEV;
 939
 940         if (pdev->capt_file != file)
 941                 return -EBUSY;
 942
 943         return vb2_streamon(&pdev->vb_queue, i);
 944 }
 945
 946 static int pwc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
 947 {
 948         struct pwc_device *pdev = video_drvdata(file);
 949
 950         if (!pdev->udev)
 951                 return -ENODEV;
 952
 953         if (pdev->capt_file != file)
 954                 return -EBUSY;
 955
 956         return vb2_streamoff(&pdev->vb_queue, i);
 957 }
 958
 959 static int pwc_enum_framesizes(struct file *file, void *fh,
 960                                          struct v4l2_frmsizeenum *fsize)
 961 {
 962         struct pwc_device *pdev = video_drvdata(file);
 963         unsigned int i = 0, index = fsize->index;
 964
 965         if (fsize->pixel_format == V4L2_PIX_FMT_YUV420) {
 966                 for (i = 0; i < PSZ_MAX; i++) {
 967                         if (pdev->image_mask & (1UL << i)) {
 968                                 if (!index--) {
 969                                         fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
 970                                         fsize->discrete.width = pwc_image_sizes[i].x;
 971                                         fsize->discrete.height = pwc_image_sizes[i].y;
 972                                         return 0;
 973                                 }
 974                         }
 975                 }
 976         } else if (fsize->index == 0 &&
 977                         ((fsize->pixel_format == V4L2_PIX_FMT_PWC1 && DEVICE_USE_CODEC1(pdev->type)) ||
 978                          (fsize->pixel_format == V4L2_PIX_FMT_PWC2 && DEVICE_USE_CODEC23(pdev->type)))) {
 979
 980                 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
 981                 fsize->discrete.width = pdev->abs_max.x;
 982                 fsize->discrete.height = pdev->abs_max.y;
 983                 return 0;
 984         }
 985         return -EINVAL;
 986 }
 987
 988 static int pwc_enum_frameintervals(struct file *file, void *fh,
 989                                            struct v4l2_frmivalenum *fival)
 990 {
 991         struct pwc_device *pdev = video_drvdata(file);
 992         int size = -1;
 993         unsigned int i;
 994
 995         for (i = 0; i < PSZ_MAX; i++) {
 996                 if (pwc_image_sizes[i].x == fival->width &&
 997                                 pwc_image_sizes[i].y == fival->height) {
 998                         size = i;
 999                         break;
1000                 }
1001         }
1002
1003         /* TODO: Support raw format */
1004         if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420)
1005                 return -EINVAL;
1006
1007         i = pwc_get_fps(pdev, fival->index, size);
1008         if (!i)
1009                 return -EINVAL;
1010
1011         fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1012         fival->discrete.numerator = 1;
1013         fival->discrete.denominator = i;
1014
1015         return 0;
1016 }
1017
1018 static long pwc_default(struct file *file, void *fh, bool valid_prio,
1019                         int cmd, void *arg)
1020 {
1021         struct pwc_device *pdev = video_drvdata(file);
1022
1023         return pwc_ioctl(pdev, cmd, arg);
1024 }
1025
1026 const struct v4l2_ioctl_ops pwc_ioctl_ops = {
1027         .vidioc_querycap                    = pwc_querycap,
1028         .vidioc_enum_input                  = pwc_enum_input,
1029         .vidioc_g_input                     = pwc_g_input,
1030         .vidioc_s_input                     = pwc_s_input,
1031         .vidioc_enum_fmt_vid_cap            = pwc_enum_fmt_vid_cap,
1032         .vidioc_g_fmt_vid_cap               = pwc_g_fmt_vid_cap,
1033         .vidioc_s_fmt_vid_cap               = pwc_s_fmt_vid_cap,
1034         .vidioc_try_fmt_vid_cap             = pwc_try_fmt_vid_cap,
1035         .vidioc_reqbufs                     = pwc_reqbufs,
1036         .vidioc_querybuf                    = pwc_querybuf,
1037         .vidioc_qbuf                        = pwc_qbuf,
1038         .vidioc_dqbuf                       = pwc_dqbuf,
1039         .vidioc_streamon                    = pwc_streamon,
1040         .vidioc_streamoff                   = pwc_streamoff,
1041         .vidioc_enum_framesizes             = pwc_enum_framesizes,
1042         .vidioc_enum_frameintervals         = pwc_enum_frameintervals,
1043         .vidioc_default             = pwc_default,
1044 };
1045
1046
1047 /* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */