drivers/media/pci/saa7134/saa7134-video.c

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * video4linux video interface
   5  *
   6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/slab.h>
  28 #include <linux/sort.h>
  29
  30 #include <media/v4l2-common.h>
  31 #include <media/v4l2-event.h>
  32 #include <media/saa6588.h>
  33
  34 #include "saa7134-reg.h"
  35 #include "saa7134.h"
  36
  37 /* ------------------------------------------------------------------ */
  38
  39 unsigned int video_debug;
  40 static unsigned int gbuffers      = 8;
  41 static unsigned int noninterlaced; /* 0 */
  42 static unsigned int gbufsize      = 720*576*4;
  43 static unsigned int gbufsize_max  = 720*576*4;
  44 static char secam[] = "--";
  45 module_param(video_debug, int, 0644);
  46 MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
  47 module_param(gbuffers, int, 0444);
  48 MODULE_PARM_DESC(gbuffers,"number of capture buffers, range 2-32");
  49 module_param(noninterlaced, int, 0644);
  50 MODULE_PARM_DESC(noninterlaced,"capture non interlaced video");
  51 module_param_string(secam, secam, sizeof(secam), 0644);
  52 MODULE_PARM_DESC(secam, "force SECAM variant, either DK,L or Lc");
  53
  54
  55 #define dprintk(fmt, arg...)    if (video_debug&0x04) \
  56         printk(KERN_DEBUG "%s/video: " fmt, dev->name , ## arg)
  57
  58 /* ------------------------------------------------------------------ */
  59 /* Defines for Video Output Port Register at address 0x191            */
  60
  61 /* Bit 0: VIP code T bit polarity */
  62
  63 #define VP_T_CODE_P_NON_INVERTED        0x00
  64 #define VP_T_CODE_P_INVERTED            0x01
  65
  66 /* ------------------------------------------------------------------ */
  67 /* Defines for Video Output Port Register at address 0x195            */
  68
  69 /* Bit 2: Video output clock delay control */
  70
  71 #define VP_CLK_CTRL2_NOT_DELAYED        0x00
  72 #define VP_CLK_CTRL2_DELAYED            0x04
  73
  74 /* Bit 1: Video output clock invert control */
  75
  76 #define VP_CLK_CTRL1_NON_INVERTED       0x00
  77 #define VP_CLK_CTRL1_INVERTED           0x02
  78
  79 /* ------------------------------------------------------------------ */
  80 /* Defines for Video Output Port Register at address 0x196            */
  81
  82 /* Bits 2 to 0: VSYNC pin video vertical sync type */
  83
  84 #define VP_VS_TYPE_MASK                 0x07
  85
  86 #define VP_VS_TYPE_OFF                  0x00
  87 #define VP_VS_TYPE_V123                 0x01
  88 #define VP_VS_TYPE_V_ITU                0x02
  89 #define VP_VS_TYPE_VGATE_L              0x03
  90 #define VP_VS_TYPE_RESERVED1            0x04
  91 #define VP_VS_TYPE_RESERVED2            0x05
  92 #define VP_VS_TYPE_F_ITU                0x06
  93 #define VP_VS_TYPE_SC_FID               0x07
  94
  95 /* ------------------------------------------------------------------ */
  96 /* data structs for video                                             */
  97
  98 static int video_out[][9] = {
  99         [CCIR656] = { 0x00, 0xb1, 0x00, 0xa1, 0x00, 0x04, 0x06, 0x00, 0x00 },
 100 };
 101
 102 static struct saa7134_format formats[] = {
 103         {
 104                 .name     = "8 bpp gray",
 105                 .fourcc   = V4L2_PIX_FMT_GREY,
 106                 .depth    = 8,
 107                 .pm       = 0x06,
 108         },{
 109                 .name     = "15 bpp RGB, le",
 110                 .fourcc   = V4L2_PIX_FMT_RGB555,
 111                 .depth    = 16,
 112                 .pm       = 0x13 | 0x80,
 113         },{
 114                 .name     = "15 bpp RGB, be",
 115                 .fourcc   = V4L2_PIX_FMT_RGB555X,
 116                 .depth    = 16,
 117                 .pm       = 0x13 | 0x80,
 118                 .bswap    = 1,
 119         },{
 120                 .name     = "16 bpp RGB, le",
 121                 .fourcc   = V4L2_PIX_FMT_RGB565,
 122                 .depth    = 16,
 123                 .pm       = 0x10 | 0x80,
 124         },{
 125                 .name     = "16 bpp RGB, be",
 126                 .fourcc   = V4L2_PIX_FMT_RGB565X,
 127                 .depth    = 16,
 128                 .pm       = 0x10 | 0x80,
 129                 .bswap    = 1,
 130         },{
 131                 .name     = "24 bpp RGB, le",
 132                 .fourcc   = V4L2_PIX_FMT_BGR24,
 133                 .depth    = 24,
 134                 .pm       = 0x11,
 135         },{
 136                 .name     = "24 bpp RGB, be",
 137                 .fourcc   = V4L2_PIX_FMT_RGB24,
 138                 .depth    = 24,
 139                 .pm       = 0x11,
 140                 .bswap    = 1,
 141         },{
 142                 .name     = "32 bpp RGB, le",
 143                 .fourcc   = V4L2_PIX_FMT_BGR32,
 144                 .depth    = 32,
 145                 .pm       = 0x12,
 146         },{
 147                 .name     = "32 bpp RGB, be",
 148                 .fourcc   = V4L2_PIX_FMT_RGB32,
 149                 .depth    = 32,
 150                 .pm       = 0x12,
 151                 .bswap    = 1,
 152                 .wswap    = 1,
 153         },{
 154                 .name     = "4:2:2 packed, YUYV",
 155                 .fourcc   = V4L2_PIX_FMT_YUYV,
 156                 .depth    = 16,
 157                 .pm       = 0x00,
 158                 .bswap    = 1,
 159                 .yuv      = 1,
 160         },{
 161                 .name     = "4:2:2 packed, UYVY",
 162                 .fourcc   = V4L2_PIX_FMT_UYVY,
 163                 .depth    = 16,
 164                 .pm       = 0x00,
 165                 .yuv      = 1,
 166         },{
 167                 .name     = "4:2:2 planar, Y-Cb-Cr",
 168                 .fourcc   = V4L2_PIX_FMT_YUV422P,
 169                 .depth    = 16,
 170                 .pm       = 0x09,
 171                 .yuv      = 1,
 172                 .planar   = 1,
 173                 .hshift   = 1,
 174                 .vshift   = 0,
 175         },{
 176                 .name     = "4:2:0 planar, Y-Cb-Cr",
 177                 .fourcc   = V4L2_PIX_FMT_YUV420,
 178                 .depth    = 12,
 179                 .pm       = 0x0a,
 180                 .yuv      = 1,
 181                 .planar   = 1,
 182                 .hshift   = 1,
 183                 .vshift   = 1,
 184         },{
 185                 .name     = "4:2:0 planar, Y-Cb-Cr",
 186                 .fourcc   = V4L2_PIX_FMT_YVU420,
 187                 .depth    = 12,
 188                 .pm       = 0x0a,
 189                 .yuv      = 1,
 190                 .planar   = 1,
 191                 .uvswap   = 1,
 192                 .hshift   = 1,
 193                 .vshift   = 1,
 194         }
 195 };
 196 #define FORMATS ARRAY_SIZE(formats)
 197
 198 #define NORM_625_50                     \
 199                 .h_start       = 0,     \
 200                 .h_stop        = 719,   \
 201                 .video_v_start = 24,    \
 202                 .video_v_stop  = 311,   \
 203                 .vbi_v_start_0 = 7,     \
 204                 .vbi_v_stop_0  = 23,    \
 205                 .vbi_v_start_1 = 319,   \
 206                 .src_timing    = 4
 207
 208 #define NORM_525_60                     \
 209                 .h_start       = 0,     \
 210                 .h_stop        = 719,   \
 211                 .video_v_start = 23,    \
 212                 .video_v_stop  = 262,   \
 213                 .vbi_v_start_0 = 10,    \
 214                 .vbi_v_stop_0  = 21,    \
 215                 .vbi_v_start_1 = 273,   \
 216                 .src_timing    = 7
 217
 218 static struct saa7134_tvnorm tvnorms[] = {
 219         {
 220                 .name          = "PAL", /* autodetect */
 221                 .id            = V4L2_STD_PAL,
 222                 NORM_625_50,
 223
 224                 .sync_control  = 0x18,
 225                 .luma_control  = 0x40,
 226                 .chroma_ctrl1  = 0x81,
 227                 .chroma_gain   = 0x2a,
 228                 .chroma_ctrl2  = 0x06,
 229                 .vgate_misc    = 0x1c,
 230
 231         },{
 232                 .name          = "PAL-BG",
 233                 .id            = V4L2_STD_PAL_BG,
 234                 NORM_625_50,
 235
 236                 .sync_control  = 0x18,
 237                 .luma_control  = 0x40,
 238                 .chroma_ctrl1  = 0x81,
 239                 .chroma_gain   = 0x2a,
 240                 .chroma_ctrl2  = 0x06,
 241                 .vgate_misc    = 0x1c,
 242
 243         },{
 244                 .name          = "PAL-I",
 245                 .id            = V4L2_STD_PAL_I,
 246                 NORM_625_50,
 247
 248                 .sync_control  = 0x18,
 249                 .luma_control  = 0x40,
 250                 .chroma_ctrl1  = 0x81,
 251                 .chroma_gain   = 0x2a,
 252                 .chroma_ctrl2  = 0x06,
 253                 .vgate_misc    = 0x1c,
 254
 255         },{
 256                 .name          = "PAL-DK",
 257                 .id            = V4L2_STD_PAL_DK,
 258                 NORM_625_50,
 259
 260                 .sync_control  = 0x18,
 261                 .luma_control  = 0x40,
 262                 .chroma_ctrl1  = 0x81,
 263                 .chroma_gain   = 0x2a,
 264                 .chroma_ctrl2  = 0x06,
 265                 .vgate_misc    = 0x1c,
 266
 267         },{
 268                 .name          = "NTSC",
 269                 .id            = V4L2_STD_NTSC,
 270                 NORM_525_60,
 271
 272                 .sync_control  = 0x59,
 273                 .luma_control  = 0x40,
 274                 .chroma_ctrl1  = 0x89,
 275                 .chroma_gain   = 0x2a,
 276                 .chroma_ctrl2  = 0x0e,
 277                 .vgate_misc    = 0x18,
 278
 279         },{
 280                 .name          = "SECAM",
 281                 .id            = V4L2_STD_SECAM,
 282                 NORM_625_50,
 283
 284                 .sync_control  = 0x18,
 285                 .luma_control  = 0x1b,
 286                 .chroma_ctrl1  = 0xd1,
 287                 .chroma_gain   = 0x80,
 288                 .chroma_ctrl2  = 0x00,
 289                 .vgate_misc    = 0x1c,
 290
 291         },{
 292                 .name          = "SECAM-DK",
 293                 .id            = V4L2_STD_SECAM_DK,
 294                 NORM_625_50,
 295
 296                 .sync_control  = 0x18,
 297                 .luma_control  = 0x1b,
 298                 .chroma_ctrl1  = 0xd1,
 299                 .chroma_gain   = 0x80,
 300                 .chroma_ctrl2  = 0x00,
 301                 .vgate_misc    = 0x1c,
 302
 303         },{
 304                 .name          = "SECAM-L",
 305                 .id            = V4L2_STD_SECAM_L,
 306                 NORM_625_50,
 307
 308                 .sync_control  = 0x18,
 309                 .luma_control  = 0x1b,
 310                 .chroma_ctrl1  = 0xd1,
 311                 .chroma_gain   = 0x80,
 312                 .chroma_ctrl2  = 0x00,
 313                 .vgate_misc    = 0x1c,
 314
 315         },{
 316                 .name          = "SECAM-Lc",
 317                 .id            = V4L2_STD_SECAM_LC,
 318                 NORM_625_50,
 319
 320                 .sync_control  = 0x18,
 321                 .luma_control  = 0x1b,
 322                 .chroma_ctrl1  = 0xd1,
 323                 .chroma_gain   = 0x80,
 324                 .chroma_ctrl2  = 0x00,
 325                 .vgate_misc    = 0x1c,
 326
 327         },{
 328                 .name          = "PAL-M",
 329                 .id            = V4L2_STD_PAL_M,
 330                 NORM_525_60,
 331
 332                 .sync_control  = 0x59,
 333                 .luma_control  = 0x40,
 334                 .chroma_ctrl1  = 0xb9,
 335                 .chroma_gain   = 0x2a,
 336                 .chroma_ctrl2  = 0x0e,
 337                 .vgate_misc    = 0x18,
 338
 339         },{
 340                 .name          = "PAL-Nc",
 341                 .id            = V4L2_STD_PAL_Nc,
 342                 NORM_625_50,
 343
 344                 .sync_control  = 0x18,
 345                 .luma_control  = 0x40,
 346                 .chroma_ctrl1  = 0xa1,
 347                 .chroma_gain   = 0x2a,
 348                 .chroma_ctrl2  = 0x06,
 349                 .vgate_misc    = 0x1c,
 350
 351         },{
 352                 .name          = "PAL-60",
 353                 .id            = V4L2_STD_PAL_60,
 354
 355                 .h_start       = 0,
 356                 .h_stop        = 719,
 357                 .video_v_start = 23,
 358                 .video_v_stop  = 262,
 359                 .vbi_v_start_0 = 10,
 360                 .vbi_v_stop_0  = 21,
 361                 .vbi_v_start_1 = 273,
 362                 .src_timing    = 7,
 363
 364                 .sync_control  = 0x18,
 365                 .luma_control  = 0x40,
 366                 .chroma_ctrl1  = 0x81,
 367                 .chroma_gain   = 0x2a,
 368                 .chroma_ctrl2  = 0x06,
 369                 .vgate_misc    = 0x1c,
 370         }
 371 };
 372 #define TVNORMS ARRAY_SIZE(tvnorms)
 373
 374 static struct saa7134_format* format_by_fourcc(unsigned int fourcc)
 375 {
 376         unsigned int i;
 377
 378         for (i = 0; i < FORMATS; i++)
 379                 if (formats[i].fourcc == fourcc)
 380                         return formats+i;
 381         return NULL;
 382 }
 383
 384 /* ------------------------------------------------------------------ */
 385
 386 static void set_tvnorm(struct saa7134_dev *dev, struct saa7134_tvnorm *norm)
 387 {
 388         dprintk("set tv norm = %s\n",norm->name);
 389         dev->tvnorm = norm;
 390
 391         /* setup cropping */
 392         dev->crop_bounds.left    = norm->h_start;
 393         dev->crop_defrect.left   = norm->h_start;
 394         dev->crop_bounds.width   = norm->h_stop - norm->h_start +1;
 395         dev->crop_defrect.width  = norm->h_stop - norm->h_start +1;
 396
 397         dev->crop_bounds.top     = (norm->vbi_v_stop_0+1)*2;
 398         dev->crop_defrect.top    = norm->video_v_start*2;
 399         dev->crop_bounds.height  = ((norm->id & V4L2_STD_525_60) ? 524 : 624)
 400                 - dev->crop_bounds.top;
 401         dev->crop_defrect.height = (norm->video_v_stop - norm->video_v_start +1)*2;
 402
 403         dev->crop_current = dev->crop_defrect;
 404
 405         saa7134_set_tvnorm_hw(dev);
 406 }
 407
 408 static void video_mux(struct saa7134_dev *dev, int input)
 409 {
 410         dprintk("video input = %d [%s]\n", input, card_in(dev, input).name);
 411         dev->ctl_input = input;
 412         set_tvnorm(dev, dev->tvnorm);
 413         saa7134_tvaudio_setinput(dev, &card_in(dev, input));
 414 }
 415
 416
 417 static void saa7134_set_decoder(struct saa7134_dev *dev)
 418 {
 419         int luma_control, sync_control, chroma_ctrl1, mux;
 420
 421         struct saa7134_tvnorm *norm = dev->tvnorm;
 422         mux = card_in(dev, dev->ctl_input).vmux;
 423
 424         luma_control = norm->luma_control;
 425         sync_control = norm->sync_control;
 426         chroma_ctrl1 = norm->chroma_ctrl1;
 427
 428         if (mux > 5)
 429                 luma_control |= 0x80; /* svideo */
 430         if (noninterlaced || dev->nosignal)
 431                 sync_control |= 0x20;
 432
 433         /* switch on auto standard detection */
 434         sync_control |= SAA7134_SYNC_CTRL_AUFD;
 435         chroma_ctrl1 |= SAA7134_CHROMA_CTRL1_AUTO0;
 436         chroma_ctrl1 &= ~SAA7134_CHROMA_CTRL1_FCTC;
 437         luma_control &= ~SAA7134_LUMA_CTRL_LDEL;
 438
 439         /* setup video decoder */
 440         saa_writeb(SAA7134_INCR_DELAY,            0x08);
 441         saa_writeb(SAA7134_ANALOG_IN_CTRL1,       0xc0 | mux);
 442         saa_writeb(SAA7134_ANALOG_IN_CTRL2,       0x00);
 443
 444         saa_writeb(SAA7134_ANALOG_IN_CTRL3,       0x90);
 445         saa_writeb(SAA7134_ANALOG_IN_CTRL4,       0x90);
 446         saa_writeb(SAA7134_HSYNC_START,           0xeb);
 447         saa_writeb(SAA7134_HSYNC_STOP,            0xe0);
 448         saa_writeb(SAA7134_SOURCE_TIMING1,        norm->src_timing);
 449
 450         saa_writeb(SAA7134_SYNC_CTRL,             sync_control);
 451         saa_writeb(SAA7134_LUMA_CTRL,             luma_control);
 452         saa_writeb(SAA7134_DEC_LUMA_BRIGHT,       dev->ctl_bright);
 453
 454         saa_writeb(SAA7134_DEC_LUMA_CONTRAST,
 455                 dev->ctl_invert ? -dev->ctl_contrast : dev->ctl_contrast);
 456
 457         saa_writeb(SAA7134_DEC_CHROMA_SATURATION,
 458                 dev->ctl_invert ? -dev->ctl_saturation : dev->ctl_saturation);
 459
 460         saa_writeb(SAA7134_DEC_CHROMA_HUE,        dev->ctl_hue);
 461         saa_writeb(SAA7134_CHROMA_CTRL1,          chroma_ctrl1);
 462         saa_writeb(SAA7134_CHROMA_GAIN,           norm->chroma_gain);
 463
 464         saa_writeb(SAA7134_CHROMA_CTRL2,          norm->chroma_ctrl2);
 465         saa_writeb(SAA7134_MODE_DELAY_CTRL,       0x00);
 466
 467         saa_writeb(SAA7134_ANALOG_ADC,            0x01);
 468         saa_writeb(SAA7134_VGATE_START,           0x11);
 469         saa_writeb(SAA7134_VGATE_STOP,            0xfe);
 470         saa_writeb(SAA7134_MISC_VGATE_MSB,        norm->vgate_misc);
 471         saa_writeb(SAA7134_RAW_DATA_GAIN,         0x40);
 472         saa_writeb(SAA7134_RAW_DATA_OFFSET,       0x80);
 473 }
 474
 475 void saa7134_set_tvnorm_hw(struct saa7134_dev *dev)
 476 {
 477         saa7134_set_decoder(dev);
 478
 479         if (card_in(dev, dev->ctl_input).tv)
 480                 saa_call_all(dev, video, s_std, dev->tvnorm->id);
 481         /* Set the correct norm for the saa6752hs. This function
 482            does nothing if there is no saa6752hs. */
 483         saa_call_empress(dev, video, s_std, dev->tvnorm->id);
 484 }
 485
 486 static void set_h_prescale(struct saa7134_dev *dev, int task, int prescale)
 487 {
 488         static const struct {
 489                 int xpsc;
 490                 int xacl;
 491                 int xc2_1;
 492                 int xdcg;
 493                 int vpfy;
 494         } vals[] = {
 495                 /* XPSC XACL XC2_1 XDCG VPFY */
 496                 {    1,   0,    0,    0,   0 },
 497                 {    2,   2,    1,    2,   2 },
 498                 {    3,   4,    1,    3,   2 },
 499                 {    4,   8,    1,    4,   2 },
 500                 {    5,   8,    1,    4,   2 },
 501                 {    6,   8,    1,    4,   3 },
 502                 {    7,   8,    1,    4,   3 },
 503                 {    8,  15,    0,    4,   3 },
 504                 {    9,  15,    0,    4,   3 },
 505                 {   10,  16,    1,    5,   3 },
 506         };
 507         static const int count = ARRAY_SIZE(vals);
 508         int i;
 509
 510         for (i = 0; i < count; i++)
 511                 if (vals[i].xpsc == prescale)
 512                         break;
 513         if (i == count)
 514                 return;
 515
 516         saa_writeb(SAA7134_H_PRESCALE(task), vals[i].xpsc);
 517         saa_writeb(SAA7134_ACC_LENGTH(task), vals[i].xacl);
 518         saa_writeb(SAA7134_LEVEL_CTRL(task),
 519                    (vals[i].xc2_1 << 3) | (vals[i].xdcg));
 520         saa_andorb(SAA7134_FIR_PREFILTER_CTRL(task), 0x0f,
 521                    (vals[i].vpfy << 2) | vals[i].vpfy);
 522 }
 523
 524 static void set_v_scale(struct saa7134_dev *dev, int task, int yscale)
 525 {
 526         int val,mirror;
 527
 528         saa_writeb(SAA7134_V_SCALE_RATIO1(task), yscale &  0xff);
 529         saa_writeb(SAA7134_V_SCALE_RATIO2(task), yscale >> 8);
 530
 531         mirror = (dev->ctl_mirror) ? 0x02 : 0x00;
 532         if (yscale < 2048) {
 533                 /* LPI */
 534                 dprintk("yscale LPI yscale=%d\n",yscale);
 535                 saa_writeb(SAA7134_V_FILTER(task), 0x00 | mirror);
 536                 saa_writeb(SAA7134_LUMA_CONTRAST(task), 0x40);
 537                 saa_writeb(SAA7134_CHROMA_SATURATION(task), 0x40);
 538         } else {
 539                 /* ACM */
 540                 val = 0x40 * 1024 / yscale;
 541                 dprintk("yscale ACM yscale=%d val=0x%x\n",yscale,val);
 542                 saa_writeb(SAA7134_V_FILTER(task), 0x01 | mirror);
 543                 saa_writeb(SAA7134_LUMA_CONTRAST(task), val);
 544                 saa_writeb(SAA7134_CHROMA_SATURATION(task), val);
 545         }
 546         saa_writeb(SAA7134_LUMA_BRIGHT(task),       0x80);
 547 }
 548
 549 static void set_size(struct saa7134_dev *dev, int task,
 550                      int width, int height, int interlace)
 551 {
 552         int prescale,xscale,yscale,y_even,y_odd;
 553         int h_start, h_stop, v_start, v_stop;
 554         int div = interlace ? 2 : 1;
 555
 556         /* setup video scaler */
 557         h_start = dev->crop_current.left;
 558         v_start = dev->crop_current.top/2;
 559         h_stop  = (dev->crop_current.left + dev->crop_current.width -1);
 560         v_stop  = (dev->crop_current.top + dev->crop_current.height -1)/2;
 561
 562         saa_writeb(SAA7134_VIDEO_H_START1(task), h_start &  0xff);
 563         saa_writeb(SAA7134_VIDEO_H_START2(task), h_start >> 8);
 564         saa_writeb(SAA7134_VIDEO_H_STOP1(task),  h_stop  &  0xff);
 565         saa_writeb(SAA7134_VIDEO_H_STOP2(task),  h_stop  >> 8);
 566         saa_writeb(SAA7134_VIDEO_V_START1(task), v_start &  0xff);
 567         saa_writeb(SAA7134_VIDEO_V_START2(task), v_start >> 8);
 568         saa_writeb(SAA7134_VIDEO_V_STOP1(task),  v_stop  &  0xff);
 569         saa_writeb(SAA7134_VIDEO_V_STOP2(task),  v_stop  >> 8);
 570
 571         prescale = dev->crop_current.width / width;
 572         if (0 == prescale)
 573                 prescale = 1;
 574         xscale = 1024 * dev->crop_current.width / prescale / width;
 575         yscale = 512 * div * dev->crop_current.height / height;
 576         dprintk("prescale=%d xscale=%d yscale=%d\n",prescale,xscale,yscale);
 577         set_h_prescale(dev,task,prescale);
 578         saa_writeb(SAA7134_H_SCALE_INC1(task),      xscale &  0xff);
 579         saa_writeb(SAA7134_H_SCALE_INC2(task),      xscale >> 8);
 580         set_v_scale(dev,task,yscale);
 581
 582         saa_writeb(SAA7134_VIDEO_PIXELS1(task),     width  & 0xff);
 583         saa_writeb(SAA7134_VIDEO_PIXELS2(task),     width  >> 8);
 584         saa_writeb(SAA7134_VIDEO_LINES1(task),      height/div & 0xff);
 585         saa_writeb(SAA7134_VIDEO_LINES2(task),      height/div >> 8);
 586
 587         /* deinterlace y offsets */
 588         y_odd  = dev->ctl_y_odd;
 589         y_even = dev->ctl_y_even;
 590         saa_writeb(SAA7134_V_PHASE_OFFSET0(task), y_odd);
 591         saa_writeb(SAA7134_V_PHASE_OFFSET1(task), y_even);
 592         saa_writeb(SAA7134_V_PHASE_OFFSET2(task), y_odd);
 593         saa_writeb(SAA7134_V_PHASE_OFFSET3(task), y_even);
 594 }
 595
 596 /* ------------------------------------------------------------------ */
 597
 598 struct cliplist {
 599         __u16 position;
 600         __u8  enable;
 601         __u8  disable;
 602 };
 603
 604 static void set_cliplist(struct saa7134_dev *dev, int reg,
 605                         struct cliplist *cl, int entries, char *name)
 606 {
 607         __u8 winbits = 0;
 608         int i;
 609
 610         for (i = 0; i < entries; i++) {
 611                 winbits |= cl[i].enable;
 612                 winbits &= ~cl[i].disable;
 613                 if (i < 15 && cl[i].position == cl[i+1].position)
 614                         continue;
 615                 saa_writeb(reg + 0, winbits);
 616                 saa_writeb(reg + 2, cl[i].position & 0xff);
 617                 saa_writeb(reg + 3, cl[i].position >> 8);
 618                 dprintk("clip: %s winbits=%02x pos=%d\n",
 619                         name,winbits,cl[i].position);
 620                 reg += 8;
 621         }
 622         for (; reg < 0x400; reg += 8) {
 623                 saa_writeb(reg+ 0, 0);
 624                 saa_writeb(reg + 1, 0);
 625                 saa_writeb(reg + 2, 0);
 626                 saa_writeb(reg + 3, 0);
 627         }
 628 }
 629
 630 static int clip_range(int val)
 631 {
 632         if (val < 0)
 633                 val = 0;
 634         return val;
 635 }
 636
 637 /* Sort into smallest position first order */
 638 static int cliplist_cmp(const void *a, const void *b)
 639 {
 640         const struct cliplist *cla = a;
 641         const struct cliplist *clb = b;
 642         if (cla->position < clb->position)
 643                 return -1;
 644         if (cla->position > clb->position)
 645                 return 1;
 646         return 0;
 647 }
 648
 649 static int setup_clipping(struct saa7134_dev *dev, struct v4l2_clip *clips,
 650                           int nclips, int interlace)
 651 {
 652         struct cliplist col[16], row[16];
 653         int cols = 0, rows = 0, i;
 654         int div = interlace ? 2 : 1;
 655
 656         memset(col, 0, sizeof(col));
 657         memset(row, 0, sizeof(row));
 658         for (i = 0; i < nclips && i < 8; i++) {
 659                 col[cols].position = clip_range(clips[i].c.left);
 660                 col[cols].enable   = (1 << i);
 661                 cols++;
 662                 col[cols].position = clip_range(clips[i].c.left+clips[i].c.width);
 663                 col[cols].disable  = (1 << i);
 664                 cols++;
 665                 row[rows].position = clip_range(clips[i].c.top / div);
 666                 row[rows].enable   = (1 << i);
 667                 rows++;
 668                 row[rows].position = clip_range((clips[i].c.top + clips[i].c.height)
 669                                                 / div);
 670                 row[rows].disable  = (1 << i);
 671                 rows++;
 672         }
 673         sort(col, cols, sizeof col[0], cliplist_cmp, NULL);
 674         sort(row, rows, sizeof row[0], cliplist_cmp, NULL);
 675         set_cliplist(dev,0x380,col,cols,"cols");
 676         set_cliplist(dev,0x384,row,rows,"rows");
 677         return 0;
 678 }
 679
 680 static int verify_preview(struct saa7134_dev *dev, struct v4l2_window *win, bool try)
 681 {
 682         enum v4l2_field field;
 683         int maxw, maxh;
 684
 685         if (!try && (dev->ovbuf.base == NULL || dev->ovfmt == NULL))
 686                 return -EINVAL;
 687         if (win->w.width < 48)
 688                 win->w.width = 48;
 689         if (win->w.height < 32)
 690                 win->w.height = 32;
 691         if (win->clipcount > 8)
 692                 win->clipcount = 8;
 693
 694         win->chromakey = 0;
 695         win->global_alpha = 0;
 696         field = win->field;
 697         maxw  = dev->crop_current.width;
 698         maxh  = dev->crop_current.height;
 699
 700         if (V4L2_FIELD_ANY == field) {
 701                 field = (win->w.height > maxh/2)
 702                         ? V4L2_FIELD_INTERLACED
 703                         : V4L2_FIELD_TOP;
 704         }
 705         switch (field) {
 706         case V4L2_FIELD_TOP:
 707         case V4L2_FIELD_BOTTOM:
 708                 maxh = maxh / 2;
 709                 break;
 710         default:
 711                 field = V4L2_FIELD_INTERLACED;
 712                 break;
 713         }
 714
 715         win->field = field;
 716         if (win->w.width > maxw)
 717                 win->w.width = maxw;
 718         if (win->w.height > maxh)
 719                 win->w.height = maxh;
 720         return 0;
 721 }
 722
 723 static int start_preview(struct saa7134_dev *dev)
 724 {
 725         unsigned long base,control,bpl;
 726         int err;
 727
 728         err = verify_preview(dev, &dev->win, false);
 729         if (0 != err)
 730                 return err;
 731
 732         dev->ovfield = dev->win.field;
 733         dprintk("start_preview %dx%d+%d+%d %s field=%s\n",
 734                 dev->win.w.width, dev->win.w.height,
 735                 dev->win.w.left, dev->win.w.top,
 736                 dev->ovfmt->name, v4l2_field_names[dev->ovfield]);
 737
 738         /* setup window + clipping */
 739         set_size(dev, TASK_B, dev->win.w.width, dev->win.w.height,
 740                  V4L2_FIELD_HAS_BOTH(dev->ovfield));
 741         setup_clipping(dev, dev->clips, dev->nclips,
 742                        V4L2_FIELD_HAS_BOTH(dev->ovfield));
 743         if (dev->ovfmt->yuv)
 744                 saa_andorb(SAA7134_DATA_PATH(TASK_B), 0x3f, 0x03);
 745         else
 746                 saa_andorb(SAA7134_DATA_PATH(TASK_B), 0x3f, 0x01);
 747         saa_writeb(SAA7134_OFMT_VIDEO_B, dev->ovfmt->pm | 0x20);
 748
 749         /* dma: setup channel 1 (= Video Task B) */
 750         base  = (unsigned long)dev->ovbuf.base;
 751         base += dev->ovbuf.fmt.bytesperline * dev->win.w.top;
 752         base += dev->ovfmt->depth/8         * dev->win.w.left;
 753         bpl   = dev->ovbuf.fmt.bytesperline;
 754         control = SAA7134_RS_CONTROL_BURST_16;
 755         if (dev->ovfmt->bswap)
 756                 control |= SAA7134_RS_CONTROL_BSWAP;
 757         if (dev->ovfmt->wswap)
 758                 control |= SAA7134_RS_CONTROL_WSWAP;
 759         if (V4L2_FIELD_HAS_BOTH(dev->ovfield)) {
 760                 saa_writel(SAA7134_RS_BA1(1),base);
 761                 saa_writel(SAA7134_RS_BA2(1),base+bpl);
 762                 saa_writel(SAA7134_RS_PITCH(1),bpl*2);
 763                 saa_writel(SAA7134_RS_CONTROL(1),control);
 764         } else {
 765                 saa_writel(SAA7134_RS_BA1(1),base);
 766                 saa_writel(SAA7134_RS_BA2(1),base);
 767                 saa_writel(SAA7134_RS_PITCH(1),bpl);
 768                 saa_writel(SAA7134_RS_CONTROL(1),control);
 769         }
 770
 771         /* start dma */
 772         dev->ovenable = 1;
 773         saa7134_set_dmabits(dev);
 774
 775         return 0;
 776 }
 777
 778 static int stop_preview(struct saa7134_dev *dev)
 779 {
 780         dev->ovenable = 0;
 781         saa7134_set_dmabits(dev);
 782         return 0;
 783 }
 784
 785 /* ------------------------------------------------------------------ */
 786
 787 static int buffer_activate(struct saa7134_dev *dev,
 788                            struct saa7134_buf *buf,
 789                            struct saa7134_buf *next)
 790 {
 791         struct saa7134_dmaqueue *dmaq = buf->vb2.vb2_queue->drv_priv;
 792         unsigned long base,control,bpl;
 793         unsigned long bpl_uv,lines_uv,base2,base3,tmp; /* planar */
 794
 795         dprintk("buffer_activate buf=%p\n",buf);
 796         buf->top_seen = 0;
 797
 798         set_size(dev, TASK_A, dev->width, dev->height,
 799                  V4L2_FIELD_HAS_BOTH(dev->field));
 800         if (dev->fmt->yuv)
 801                 saa_andorb(SAA7134_DATA_PATH(TASK_A), 0x3f, 0x03);
 802         else
 803                 saa_andorb(SAA7134_DATA_PATH(TASK_A), 0x3f, 0x01);
 804         saa_writeb(SAA7134_OFMT_VIDEO_A, dev->fmt->pm);
 805
 806         /* DMA: setup channel 0 (= Video Task A0) */
 807         base  = saa7134_buffer_base(buf);
 808         if (dev->fmt->planar)
 809                 bpl = dev->width;
 810         else
 811                 bpl = (dev->width * dev->fmt->depth) / 8;
 812         control = SAA7134_RS_CONTROL_BURST_16 |
 813                 SAA7134_RS_CONTROL_ME |
 814                 (dmaq->pt.dma >> 12);
 815         if (dev->fmt->bswap)
 816                 control |= SAA7134_RS_CONTROL_BSWAP;
 817         if (dev->fmt->wswap)
 818                 control |= SAA7134_RS_CONTROL_WSWAP;
 819         if (V4L2_FIELD_HAS_BOTH(dev->field)) {
 820                 /* interlaced */
 821                 saa_writel(SAA7134_RS_BA1(0),base);
 822                 saa_writel(SAA7134_RS_BA2(0),base+bpl);
 823                 saa_writel(SAA7134_RS_PITCH(0),bpl*2);
 824         } else {
 825                 /* non-interlaced */
 826                 saa_writel(SAA7134_RS_BA1(0),base);
 827                 saa_writel(SAA7134_RS_BA2(0),base);
 828                 saa_writel(SAA7134_RS_PITCH(0),bpl);
 829         }
 830         saa_writel(SAA7134_RS_CONTROL(0),control);
 831
 832         if (dev->fmt->planar) {
 833                 /* DMA: setup channel 4+5 (= planar task A) */
 834                 bpl_uv   = bpl >> dev->fmt->hshift;
 835                 lines_uv = dev->height >> dev->fmt->vshift;
 836                 base2    = base + bpl * dev->height;
 837                 base3    = base2 + bpl_uv * lines_uv;
 838                 if (dev->fmt->uvswap)
 839                         tmp = base2, base2 = base3, base3 = tmp;
 840                 dprintk("uv: bpl=%ld lines=%ld base2/3=%ld/%ld\n",
 841                         bpl_uv,lines_uv,base2,base3);
 842                 if (V4L2_FIELD_HAS_BOTH(dev->field)) {
 843                         /* interlaced */
 844                         saa_writel(SAA7134_RS_BA1(4),base2);
 845                         saa_writel(SAA7134_RS_BA2(4),base2+bpl_uv);
 846                         saa_writel(SAA7134_RS_PITCH(4),bpl_uv*2);
 847                         saa_writel(SAA7134_RS_BA1(5),base3);
 848                         saa_writel(SAA7134_RS_BA2(5),base3+bpl_uv);
 849                         saa_writel(SAA7134_RS_PITCH(5),bpl_uv*2);
 850                 } else {
 851                         /* non-interlaced */
 852                         saa_writel(SAA7134_RS_BA1(4),base2);
 853                         saa_writel(SAA7134_RS_BA2(4),base2);
 854                         saa_writel(SAA7134_RS_PITCH(4),bpl_uv);
 855                         saa_writel(SAA7134_RS_BA1(5),base3);
 856                         saa_writel(SAA7134_RS_BA2(5),base3);
 857                         saa_writel(SAA7134_RS_PITCH(5),bpl_uv);
 858                 }
 859                 saa_writel(SAA7134_RS_CONTROL(4),control);
 860                 saa_writel(SAA7134_RS_CONTROL(5),control);
 861         }
 862
 863         /* start DMA */
 864         saa7134_set_dmabits(dev);
 865         mod_timer(&dmaq->timeout, jiffies + BUFFER_TIMEOUT);
 866         return 0;
 867 }
 868
 869 static int buffer_init(struct vb2_buffer *vb2)
 870 {
 871         struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
 872         struct saa7134_buf *buf = container_of(vb2, struct saa7134_buf, vb2);
 873
 874         dmaq->curr = NULL;
 875         buf->activate = buffer_activate;
 876         return 0;
 877 }
 878
 879 static int buffer_prepare(struct vb2_buffer *vb2)
 880 {
 881         struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
 882         struct saa7134_dev *dev = dmaq->dev;
 883         struct saa7134_buf *buf = container_of(vb2, struct saa7134_buf, vb2);
 884         struct sg_table *dma = vb2_dma_sg_plane_desc(&buf->vb2, 0);
 885         unsigned int size;
 886         int ret;
 887
 888         if (dma->sgl->offset) {
 889                 pr_err("The buffer is not page-aligned\n");
 890                 return -EINVAL;
 891         }
 892         size = (dev->width * dev->height * dev->fmt->depth) >> 3;
 893         if (vb2_plane_size(vb2, 0) < size)
 894                 return -EINVAL;
 895
 896         vb2_set_plane_payload(vb2, 0, size);
 897         vb2->v4l2_buf.field = dev->field;
 898
 899         ret = dma_map_sg(&dev->pci->dev, dma->sgl, dma->nents, DMA_FROM_DEVICE);
 900         if (!ret)
 901                 return -EIO;
 902         return saa7134_pgtable_build(dev->pci, &dmaq->pt, dma->sgl, dma->nents,
 903                                     saa7134_buffer_startpage(buf));
 904 }
 905
 906 static void buffer_finish(struct vb2_buffer *vb2)
 907 {
 908         struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
 909         struct saa7134_dev *dev = dmaq->dev;
 910         struct saa7134_buf *buf = container_of(vb2, struct saa7134_buf, vb2);
 911         struct sg_table *dma = vb2_dma_sg_plane_desc(&buf->vb2, 0);
 912
 913         dma_unmap_sg(&dev->pci->dev, dma->sgl, dma->nents, DMA_FROM_DEVICE);
 914 }
 915
 916 static int queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
 917                            unsigned int *nbuffers, unsigned int *nplanes,
 918                            unsigned int sizes[], void *alloc_ctxs[])
 919 {
 920         struct saa7134_dmaqueue *dmaq = q->drv_priv;
 921         struct saa7134_dev *dev = dmaq->dev;
 922         int size = dev->fmt->depth * dev->width * dev->height >> 3;
 923
 924         if (dev->width    < 48 ||
 925             dev->height   < 32 ||
 926             dev->width/4  > dev->crop_current.width  ||
 927             dev->height/4 > dev->crop_current.height ||
 928             dev->width    > dev->crop_bounds.width  ||
 929             dev->height   > dev->crop_bounds.height)
 930                 return -EINVAL;
 931
 932         *nbuffers = saa7134_buffer_count(size, *nbuffers);
 933         *nplanes = 1;
 934         sizes[0] = size;
 935         return 0;
 936 }
 937
 938 /*
 939  * move buffer to hardware queue
 940  */
 941 void saa7134_vb2_buffer_queue(struct vb2_buffer *vb)
 942 {
 943         struct saa7134_dmaqueue *dmaq = vb->vb2_queue->drv_priv;
 944         struct saa7134_dev *dev = dmaq->dev;
 945         struct saa7134_buf *buf = container_of(vb, struct saa7134_buf, vb2);
 946
 947         saa7134_buffer_queue(dev, dmaq, buf);
 948 }
 949 EXPORT_SYMBOL_GPL(saa7134_vb2_buffer_queue);
 950
 951 int saa7134_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
 952 {
 953         struct saa7134_dmaqueue *dmaq = vq->drv_priv;
 954         struct saa7134_dev *dev = dmaq->dev;
 955
 956         /*
 957          * Planar video capture and TS share the same DMA channel,
 958          * so only one can be active at a time.
 959          */
 960         if (card_is_empress(dev) && vb2_is_busy(&dev->empress_vbq) &&
 961             dmaq == &dev->video_q && dev->fmt->planar) {
 962                 struct saa7134_buf *buf, *tmp;
 963
 964                 list_for_each_entry_safe(buf, tmp, &dmaq->queue, entry) {
 965                         list_del(&buf->entry);
 966                         vb2_buffer_done(&buf->vb2, VB2_BUF_STATE_QUEUED);
 967                 }
 968                 if (dmaq->curr) {
 969                         vb2_buffer_done(&dmaq->curr->vb2, VB2_BUF_STATE_QUEUED);
 970                         dmaq->curr = NULL;
 971                 }
 972                 return -EBUSY;
 973         }
 974
 975         /* The SAA7134 has a 1K FIFO; the datasheet suggests that when
 976          * configured conservatively, there's 22 usec of buffering for video.
 977          * We therefore request a DMA latency of 20 usec, giving us 2 usec of
 978          * margin in case the FIFO is configured differently to the datasheet.
 979          * Unfortunately, I lack register-level documentation to check the
 980          * Linux FIFO setup and confirm the perfect value.
 981          */
 982         if ((dmaq == &dev->video_q && !vb2_is_streaming(&dev->vbi_vbq)) ||
 983             (dmaq == &dev->vbi_q && !vb2_is_streaming(&dev->video_vbq)))
 984                 pm_qos_add_request(&dev->qos_request,
 985                         PM_QOS_CPU_DMA_LATENCY, 20);
 986         dmaq->seq_nr = 0;
 987
 988         return 0;
 989 }
 990
 991 void saa7134_vb2_stop_streaming(struct vb2_queue *vq)
 992 {
 993         struct saa7134_dmaqueue *dmaq = vq->drv_priv;
 994         struct saa7134_dev *dev = dmaq->dev;
 995
 996         saa7134_stop_streaming(dev, dmaq);
 997
 998         if ((dmaq == &dev->video_q && !vb2_is_streaming(&dev->vbi_vbq)) ||
 999             (dmaq == &dev->vbi_q && !vb2_is_streaming(&dev->video_vbq)))
1000                 pm_qos_remove_request(&dev->qos_request);
1001 }
1002
1003 static struct vb2_ops vb2_qops = {
1004         .queue_setup    = queue_setup,
1005         .buf_init       = buffer_init,
1006         .buf_prepare    = buffer_prepare,
1007         .buf_finish     = buffer_finish,
1008         .buf_queue      = saa7134_vb2_buffer_queue,
1009         .wait_prepare   = vb2_ops_wait_prepare,
1010         .wait_finish    = vb2_ops_wait_finish,
1011         .start_streaming = saa7134_vb2_start_streaming,
1012         .stop_streaming = saa7134_vb2_stop_streaming,
1013 };
1014
1015 /* ------------------------------------------------------------------ */
1016
1017 static int saa7134_s_ctrl(struct v4l2_ctrl *ctrl)
1018 {
1019         struct saa7134_dev *dev = container_of(ctrl->handler, struct saa7134_dev, ctrl_handler);
1020         unsigned long flags;
1021         int restart_overlay = 0;
1022
1023         switch (ctrl->id) {
1024         case V4L2_CID_BRIGHTNESS:
1025                 dev->ctl_bright = ctrl->val;
1026                 saa_writeb(SAA7134_DEC_LUMA_BRIGHT, ctrl->val);
1027                 break;
1028         case V4L2_CID_HUE:
1029                 dev->ctl_hue = ctrl->val;
1030                 saa_writeb(SAA7134_DEC_CHROMA_HUE, ctrl->val);
1031                 break;
1032         case V4L2_CID_CONTRAST:
1033                 dev->ctl_contrast = ctrl->val;
1034                 saa_writeb(SAA7134_DEC_LUMA_CONTRAST,
1035                            dev->ctl_invert ? -dev->ctl_contrast : dev->ctl_contrast);
1036                 break;
1037         case V4L2_CID_SATURATION:
1038                 dev->ctl_saturation = ctrl->val;
1039                 saa_writeb(SAA7134_DEC_CHROMA_SATURATION,
1040                            dev->ctl_invert ? -dev->ctl_saturation : dev->ctl_saturation);
1041                 break;
1042         case V4L2_CID_AUDIO_MUTE:
1043                 dev->ctl_mute = ctrl->val;
1044                 saa7134_tvaudio_setmute(dev);
1045                 break;
1046         case V4L2_CID_AUDIO_VOLUME:
1047                 dev->ctl_volume = ctrl->val;
1048                 saa7134_tvaudio_setvolume(dev,dev->ctl_volume);
1049                 break;
1050         case V4L2_CID_PRIVATE_INVERT:
1051                 dev->ctl_invert = ctrl->val;
1052                 saa_writeb(SAA7134_DEC_LUMA_CONTRAST,
1053                            dev->ctl_invert ? -dev->ctl_contrast : dev->ctl_contrast);
1054                 saa_writeb(SAA7134_DEC_CHROMA_SATURATION,
1055                            dev->ctl_invert ? -dev->ctl_saturation : dev->ctl_saturation);
1056                 break;
1057         case V4L2_CID_HFLIP:
1058                 dev->ctl_mirror = ctrl->val;
1059                 restart_overlay = 1;
1060                 break;
1061         case V4L2_CID_PRIVATE_Y_EVEN:
1062                 dev->ctl_y_even = ctrl->val;
1063                 restart_overlay = 1;
1064                 break;
1065         case V4L2_CID_PRIVATE_Y_ODD:
1066                 dev->ctl_y_odd = ctrl->val;
1067                 restart_overlay = 1;
1068                 break;
1069         case V4L2_CID_PRIVATE_AUTOMUTE:
1070         {
1071                 struct v4l2_priv_tun_config tda9887_cfg;
1072
1073                 tda9887_cfg.tuner = TUNER_TDA9887;
1074                 tda9887_cfg.priv = &dev->tda9887_conf;
1075
1076                 dev->ctl_automute = ctrl->val;
1077                 if (dev->tda9887_conf) {
1078                         if (dev->ctl_automute)
1079                                 dev->tda9887_conf |= TDA9887_AUTOMUTE;
1080                         else
1081                                 dev->tda9887_conf &= ~TDA9887_AUTOMUTE;
1082
1083                         saa_call_all(dev, tuner, s_config, &tda9887_cfg);
1084                 }
1085                 break;
1086         }
1087         default:
1088                 return -EINVAL;
1089         }
1090         if (restart_overlay && dev->overlay_owner) {
1091                 spin_lock_irqsave(&dev->slock, flags);
1092                 stop_preview(dev);
1093                 start_preview(dev);
1094                 spin_unlock_irqrestore(&dev->slock, flags);
1095         }
1096         return 0;
1097 }
1098
1099 /* ------------------------------------------------------------------ */
1100
1101 static inline struct vb2_queue *saa7134_queue(struct file *file)
1102 {
1103         return video_devdata(file)->queue;
1104 }
1105
1106 static int video_open(struct file *file)
1107 {
1108         struct video_device *vdev = video_devdata(file);
1109         struct saa7134_dev *dev = video_drvdata(file);
1110         int ret = v4l2_fh_open(file);
1111
1112         if (ret < 0)
1113                 return ret;
1114
1115         mutex_lock(&dev->lock);
1116         if (vdev->vfl_type == VFL_TYPE_RADIO) {
1117                 /* switch to radio mode */
1118                 saa7134_tvaudio_setinput(dev, &card(dev).radio);
1119                 saa_call_all(dev, tuner, s_radio);
1120         } else {
1121                 /* switch to video/vbi mode */
1122                 video_mux(dev, dev->ctl_input);
1123         }
1124         mutex_unlock(&dev->lock);
1125
1126         return 0;
1127 }
1128
1129 static int video_release(struct file *file)
1130 {
1131         struct video_device *vdev = video_devdata(file);
1132         struct saa7134_dev *dev = video_drvdata(file);
1133         struct v4l2_fh *fh = file->private_data;
1134         struct saa6588_command cmd;
1135         unsigned long flags;
1136
1137         mutex_lock(&dev->lock);
1138         saa7134_tvaudio_close(dev);
1139
1140         /* turn off overlay */
1141         if (fh == dev->overlay_owner) {
1142                 spin_lock_irqsave(&dev->slock,flags);
1143                 stop_preview(dev);
1144                 spin_unlock_irqrestore(&dev->slock,flags);
1145                 dev->overlay_owner = NULL;
1146         }
1147
1148         if (vdev->vfl_type == VFL_TYPE_RADIO)
1149                 v4l2_fh_release(file);
1150         else
1151                 _vb2_fop_release(file, NULL);
1152
1153         /* ts-capture will not work in planar mode, so turn it off Hac: 04.05*/
1154         saa_andorb(SAA7134_OFMT_VIDEO_A, 0x1f, 0);
1155         saa_andorb(SAA7134_OFMT_VIDEO_B, 0x1f, 0);
1156         saa_andorb(SAA7134_OFMT_DATA_A, 0x1f, 0);
1157         saa_andorb(SAA7134_OFMT_DATA_B, 0x1f, 0);
1158
1159         saa_call_all(dev, core, s_power, 0);
1160         if (vdev->vfl_type == VFL_TYPE_RADIO)
1161                 saa_call_all(dev, core, ioctl, SAA6588_CMD_CLOSE, &cmd);
1162         mutex_unlock(&dev->lock);
1163
1164         return 0;
1165 }
1166
1167 static ssize_t radio_read(struct file *file, char __user *data,
1168                          size_t count, loff_t *ppos)
1169 {
1170         struct saa7134_dev *dev = video_drvdata(file);
1171         struct saa6588_command cmd;
1172
1173         cmd.block_count = count/3;
1174         cmd.nonblocking = file->f_flags & O_NONBLOCK;
1175         cmd.buffer = data;
1176         cmd.instance = file;
1177         cmd.result = -ENODEV;
1178
1179         mutex_lock(&dev->lock);
1180         saa_call_all(dev, core, ioctl, SAA6588_CMD_READ, &cmd);
1181         mutex_unlock(&dev->lock);
1182
1183         return cmd.result;
1184 }
1185
1186 static unsigned int radio_poll(struct file *file, poll_table *wait)
1187 {
1188         struct saa7134_dev *dev = video_drvdata(file);
1189         struct saa6588_command cmd;
1190         unsigned int rc = v4l2_ctrl_poll(file, wait);
1191
1192         cmd.instance = file;
1193         cmd.event_list = wait;
1194         cmd.result = 0;
1195         mutex_lock(&dev->lock);
1196         saa_call_all(dev, core, ioctl, SAA6588_CMD_POLL, &cmd);
1197         mutex_unlock(&dev->lock);
1198
1199         return rc | cmd.result;
1200 }
1201
1202 /* ------------------------------------------------------------------ */
1203
1204 static int saa7134_try_get_set_fmt_vbi_cap(struct file *file, void *priv,
1205                                                 struct v4l2_format *f)
1206 {
1207         struct saa7134_dev *dev = video_drvdata(file);
1208         struct saa7134_tvnorm *norm = dev->tvnorm;
1209
1210         memset(&f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1211         f->fmt.vbi.sampling_rate = 6750000 * 4;
1212         f->fmt.vbi.samples_per_line = 2048 /* VBI_LINE_LENGTH */;
1213         f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1214         f->fmt.vbi.offset = 64 * 4;
1215         f->fmt.vbi.start[0] = norm->vbi_v_start_0;
1216         f->fmt.vbi.count[0] = norm->vbi_v_stop_0 - norm->vbi_v_start_0 +1;
1217         f->fmt.vbi.start[1] = norm->vbi_v_start_1;
1218         f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1219         f->fmt.vbi.flags = 0; /* VBI_UNSYNC VBI_INTERLACED */
1220
1221         return 0;
1222 }
1223
1224 static int saa7134_g_fmt_vid_cap(struct file *file, void *priv,
1225                                 struct v4l2_format *f)
1226 {
1227         struct saa7134_dev *dev = video_drvdata(file);
1228
1229         f->fmt.pix.width        = dev->width;
1230         f->fmt.pix.height       = dev->height;
1231         f->fmt.pix.field        = dev->field;
1232         f->fmt.pix.pixelformat  = dev->fmt->fourcc;
1233         f->fmt.pix.bytesperline =
1234                 (f->fmt.pix.width * dev->fmt->depth) >> 3;
1235         f->fmt.pix.sizeimage =
1236                 f->fmt.pix.height * f->fmt.pix.bytesperline;
1237         f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
1238         return 0;
1239 }
1240
1241 static int saa7134_g_fmt_vid_overlay(struct file *file, void *priv,
1242                                 struct v4l2_format *f)
1243 {
1244         struct saa7134_dev *dev = video_drvdata(file);
1245         struct v4l2_clip __user *clips = f->fmt.win.clips;
1246         u32 clipcount = f->fmt.win.clipcount;
1247         int err = 0;
1248         int i;
1249
1250         if (saa7134_no_overlay > 0) {
1251                 printk(KERN_ERR "V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1252                 return -EINVAL;
1253         }
1254         f->fmt.win = dev->win;
1255         f->fmt.win.clips = clips;
1256         if (clips == NULL)
1257                 clipcount = 0;
1258         if (dev->nclips < clipcount)
1259                 clipcount = dev->nclips;
1260         f->fmt.win.clipcount = clipcount;
1261
1262         for (i = 0; !err && i < clipcount; i++) {
1263                 if (copy_to_user(&f->fmt.win.clips[i].c, &dev->clips[i].c,
1264                                         sizeof(struct v4l2_rect)))
1265                         err = -EFAULT;
1266         }
1267
1268         return err;
1269 }
1270
1271 static int saa7134_try_fmt_vid_cap(struct file *file, void *priv,
1272                                                 struct v4l2_format *f)
1273 {
1274         struct saa7134_dev *dev = video_drvdata(file);
1275         struct saa7134_format *fmt;
1276         enum v4l2_field field;
1277         unsigned int maxw, maxh;
1278
1279         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1280         if (NULL == fmt)
1281                 return -EINVAL;
1282
1283         field = f->fmt.pix.field;
1284         maxw  = min(dev->crop_current.width*4,  dev->crop_bounds.width);
1285         maxh  = min(dev->crop_current.height*4, dev->crop_bounds.height);
1286
1287         if (V4L2_FIELD_ANY == field) {
1288                 field = (f->fmt.pix.height > maxh/2)
1289                         ? V4L2_FIELD_INTERLACED
1290                         : V4L2_FIELD_BOTTOM;
1291         }
1292         switch (field) {
1293         case V4L2_FIELD_TOP:
1294         case V4L2_FIELD_BOTTOM:
1295                 maxh = maxh / 2;
1296                 break;
1297         default:
1298                 field = V4L2_FIELD_INTERLACED;
1299                 break;
1300         }
1301
1302         f->fmt.pix.field = field;
1303         if (f->fmt.pix.width  < 48)
1304                 f->fmt.pix.width  = 48;
1305         if (f->fmt.pix.height < 32)
1306                 f->fmt.pix.height = 32;
1307         if (f->fmt.pix.width > maxw)
1308                 f->fmt.pix.width = maxw;
1309         if (f->fmt.pix.height > maxh)
1310                 f->fmt.pix.height = maxh;
1311         f->fmt.pix.width &= ~0x03;
1312         f->fmt.pix.bytesperline =
1313                 (f->fmt.pix.width * fmt->depth) >> 3;
1314         f->fmt.pix.sizeimage =
1315                 f->fmt.pix.height * f->fmt.pix.bytesperline;
1316         f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
1317
1318         return 0;
1319 }
1320
1321 static int saa7134_try_fmt_vid_overlay(struct file *file, void *priv,
1322                                                 struct v4l2_format *f)
1323 {
1324         struct saa7134_dev *dev = video_drvdata(file);
1325
1326         if (saa7134_no_overlay > 0) {
1327                 printk(KERN_ERR "V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1328                 return -EINVAL;
1329         }
1330
1331         if (f->fmt.win.clips == NULL)
1332                 f->fmt.win.clipcount = 0;
1333         return verify_preview(dev, &f->fmt.win, true);
1334 }
1335
1336 static int saa7134_s_fmt_vid_cap(struct file *file, void *priv,
1337                                         struct v4l2_format *f)
1338 {
1339         struct saa7134_dev *dev = video_drvdata(file);
1340         int err;
1341
1342         err = saa7134_try_fmt_vid_cap(file, priv, f);
1343         if (0 != err)
1344                 return err;
1345
1346         dev->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1347         dev->width = f->fmt.pix.width;
1348         dev->height = f->fmt.pix.height;
1349         dev->field = f->fmt.pix.field;
1350         return 0;
1351 }
1352
1353 static int saa7134_s_fmt_vid_overlay(struct file *file, void *priv,
1354                                         struct v4l2_format *f)
1355 {
1356         struct saa7134_dev *dev = video_drvdata(file);
1357         int err;
1358         unsigned long flags;
1359
1360         if (saa7134_no_overlay > 0) {
1361                 printk(KERN_ERR "V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1362                 return -EINVAL;
1363         }
1364         if (f->fmt.win.clips == NULL)
1365                 f->fmt.win.clipcount = 0;
1366         err = verify_preview(dev, &f->fmt.win, true);
1367         if (0 != err)
1368                 return err;
1369
1370         dev->win    = f->fmt.win;
1371         dev->nclips = f->fmt.win.clipcount;
1372
1373         if (copy_from_user(dev->clips, f->fmt.win.clips,
1374                            sizeof(struct v4l2_clip) * dev->nclips))
1375                 return -EFAULT;
1376
1377         if (priv == dev->overlay_owner) {
1378                 spin_lock_irqsave(&dev->slock, flags);
1379                 stop_preview(dev);
1380                 start_preview(dev);
1381                 spin_unlock_irqrestore(&dev->slock, flags);
1382         }
1383
1384         return 0;
1385 }
1386
1387 int saa7134_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1388 {
1389         struct saa7134_dev *dev = video_drvdata(file);
1390         unsigned int n;
1391
1392         n = i->index;
1393         if (n >= SAA7134_INPUT_MAX)
1394                 return -EINVAL;
1395         if (NULL == card_in(dev, i->index).name)
1396                 return -EINVAL;
1397         i->index = n;
1398         i->type  = V4L2_INPUT_TYPE_CAMERA;
1399         strcpy(i->name, card_in(dev, n).name);
1400         if (card_in(dev, n).tv)
1401                 i->type = V4L2_INPUT_TYPE_TUNER;
1402         if (n == dev->ctl_input) {
1403                 int v1 = saa_readb(SAA7134_STATUS_VIDEO1);
1404                 int v2 = saa_readb(SAA7134_STATUS_VIDEO2);
1405
1406                 if (0 != (v1 & 0x40))
1407                         i->status |= V4L2_IN_ST_NO_H_LOCK;
1408                 if (0 != (v2 & 0x40))
1409                         i->status |= V4L2_IN_ST_NO_SIGNAL;
1410                 if (0 != (v2 & 0x0e))
1411                         i->status |= V4L2_IN_ST_MACROVISION;
1412         }
1413         i->std = SAA7134_NORMS;
1414         return 0;
1415 }
1416 EXPORT_SYMBOL_GPL(saa7134_enum_input);
1417
1418 int saa7134_g_input(struct file *file, void *priv, unsigned int *i)
1419 {
1420         struct saa7134_dev *dev = video_drvdata(file);
1421
1422         *i = dev->ctl_input;
1423         return 0;
1424 }
1425 EXPORT_SYMBOL_GPL(saa7134_g_input);
1426
1427 int saa7134_s_input(struct file *file, void *priv, unsigned int i)
1428 {
1429         struct saa7134_dev *dev = video_drvdata(file);
1430
1431         if (i >= SAA7134_INPUT_MAX)
1432                 return -EINVAL;
1433         if (NULL == card_in(dev, i).name)
1434                 return -EINVAL;
1435         video_mux(dev, i);
1436         return 0;
1437 }
1438 EXPORT_SYMBOL_GPL(saa7134_s_input);
1439
1440 int saa7134_querycap(struct file *file, void *priv,
1441                                         struct v4l2_capability *cap)
1442 {
1443         struct saa7134_dev *dev = video_drvdata(file);
1444         struct video_device *vdev = video_devdata(file);
1445         u32 radio_caps, video_caps, vbi_caps;
1446
1447         unsigned int tuner_type = dev->tuner_type;
1448
1449         strcpy(cap->driver, "saa7134");
1450         strlcpy(cap->card, saa7134_boards[dev->board].name,
1451                 sizeof(cap->card));
1452         sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
1453
1454         cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1455         if ((tuner_type != TUNER_ABSENT) && (tuner_type != UNSET))
1456                 cap->device_caps |= V4L2_CAP_TUNER;
1457
1458         radio_caps = V4L2_CAP_RADIO;
1459         if (dev->has_rds)
1460                 radio_caps |= V4L2_CAP_RDS_CAPTURE;
1461
1462         video_caps = V4L2_CAP_VIDEO_CAPTURE;
1463         if (saa7134_no_overlay <= 0 && !is_empress(file))
1464                 video_caps |= V4L2_CAP_VIDEO_OVERLAY;
1465
1466         vbi_caps = V4L2_CAP_VBI_CAPTURE;
1467
1468         switch (vdev->vfl_type) {
1469         case VFL_TYPE_RADIO:
1470                 cap->device_caps |= radio_caps;
1471                 break;
1472         case VFL_TYPE_GRABBER:
1473                 cap->device_caps |= video_caps;
1474                 break;
1475         case VFL_TYPE_VBI:
1476                 cap->device_caps |= vbi_caps;
1477                 break;
1478         }
1479         cap->capabilities = radio_caps | video_caps | vbi_caps |
1480                 cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1481         if (vdev->vfl_type == VFL_TYPE_RADIO) {
1482                 cap->device_caps &= ~V4L2_CAP_STREAMING;
1483                 if (!dev->has_rds)
1484                         cap->device_caps &= ~V4L2_CAP_READWRITE;
1485         }
1486
1487         return 0;
1488 }
1489 EXPORT_SYMBOL_GPL(saa7134_querycap);
1490
1491 int saa7134_s_std(struct file *file, void *priv, v4l2_std_id id)
1492 {
1493         struct saa7134_dev *dev = video_drvdata(file);
1494         struct v4l2_fh *fh = priv;
1495         unsigned long flags;
1496         unsigned int i;
1497         v4l2_std_id fixup;
1498
1499         if (is_empress(file) && dev->overlay_owner) {
1500                 /* Don't change the std from the mpeg device
1501                    if overlay is active. */
1502                 return -EBUSY;
1503         }
1504
1505         for (i = 0; i < TVNORMS; i++)
1506                 if (id == tvnorms[i].id)
1507                         break;
1508
1509         if (i == TVNORMS)
1510                 for (i = 0; i < TVNORMS; i++)
1511                         if (id & tvnorms[i].id)
1512                                 break;
1513         if (i == TVNORMS)
1514                 return -EINVAL;
1515
1516         if ((id & V4L2_STD_SECAM) && (secam[0] != '-')) {
1517                 if (secam[0] == 'L' || secam[0] == 'l') {
1518                         if (secam[1] == 'C' || secam[1] == 'c')
1519                                 fixup = V4L2_STD_SECAM_LC;
1520                         else
1521                                 fixup = V4L2_STD_SECAM_L;
1522                 } else {
1523                         if (secam[0] == 'D' || secam[0] == 'd')
1524                                 fixup = V4L2_STD_SECAM_DK;
1525                         else
1526                                 fixup = V4L2_STD_SECAM;
1527                 }
1528                 for (i = 0; i < TVNORMS; i++) {
1529                         if (fixup == tvnorms[i].id)
1530                                 break;
1531                 }
1532                 if (i == TVNORMS)
1533                         return -EINVAL;
1534         }
1535
1536         id = tvnorms[i].id;
1537
1538         if (!is_empress(file) && fh == dev->overlay_owner) {
1539                 spin_lock_irqsave(&dev->slock, flags);
1540                 stop_preview(dev);
1541                 spin_unlock_irqrestore(&dev->slock, flags);
1542
1543                 set_tvnorm(dev, &tvnorms[i]);
1544
1545                 spin_lock_irqsave(&dev->slock, flags);
1546                 start_preview(dev);
1547                 spin_unlock_irqrestore(&dev->slock, flags);
1548         } else
1549                 set_tvnorm(dev, &tvnorms[i]);
1550
1551         saa7134_tvaudio_do_scan(dev);
1552         return 0;
1553 }
1554 EXPORT_SYMBOL_GPL(saa7134_s_std);
1555
1556 int saa7134_g_std(struct file *file, void *priv, v4l2_std_id *id)
1557 {
1558         struct saa7134_dev *dev = video_drvdata(file);
1559
1560         *id = dev->tvnorm->id;
1561         return 0;
1562 }
1563 EXPORT_SYMBOL_GPL(saa7134_g_std);
1564
1565 static v4l2_std_id saa7134_read_std(struct saa7134_dev *dev)
1566 {
1567         static v4l2_std_id stds[] = {
1568                 V4L2_STD_UNKNOWN,
1569                 V4L2_STD_NTSC,
1570                 V4L2_STD_PAL,
1571                 V4L2_STD_SECAM };
1572
1573         v4l2_std_id result = 0;
1574
1575         u8 st1 = saa_readb(SAA7134_STATUS_VIDEO1);
1576         u8 st2 = saa_readb(SAA7134_STATUS_VIDEO2);
1577
1578         if (!(st2 & 0x1)) /* RDCAP == 0 */
1579                 result = V4L2_STD_UNKNOWN;
1580         else
1581                 result = stds[st1 & 0x03];
1582
1583         return result;
1584 }
1585
1586 int saa7134_querystd(struct file *file, void *priv, v4l2_std_id *std)
1587 {
1588         struct saa7134_dev *dev = video_drvdata(file);
1589         *std &= saa7134_read_std(dev);
1590         return 0;
1591 }
1592 EXPORT_SYMBOL_GPL(saa7134_querystd);
1593
1594 static int saa7134_cropcap(struct file *file, void *priv,
1595                                         struct v4l2_cropcap *cap)
1596 {
1597         struct saa7134_dev *dev = video_drvdata(file);
1598
1599         if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1600             cap->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
1601                 return -EINVAL;
1602         cap->bounds  = dev->crop_bounds;
1603         cap->defrect = dev->crop_defrect;
1604         cap->pixelaspect.numerator   = 1;
1605         cap->pixelaspect.denominator = 1;
1606         if (dev->tvnorm->id & V4L2_STD_525_60) {
1607                 cap->pixelaspect.numerator   = 11;
1608                 cap->pixelaspect.denominator = 10;
1609         }
1610         if (dev->tvnorm->id & V4L2_STD_625_50) {
1611                 cap->pixelaspect.numerator   = 54;
1612                 cap->pixelaspect.denominator = 59;
1613         }
1614         return 0;
1615 }
1616
1617 static int saa7134_g_crop(struct file *file, void *f, struct v4l2_crop *crop)
1618 {
1619         struct saa7134_dev *dev = video_drvdata(file);
1620
1621         if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1622             crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
1623                 return -EINVAL;
1624         crop->c = dev->crop_current;
1625         return 0;
1626 }
1627
1628 static int saa7134_s_crop(struct file *file, void *f, const struct v4l2_crop *crop)
1629 {
1630         struct saa7134_dev *dev = video_drvdata(file);
1631         struct v4l2_rect *b = &dev->crop_bounds;
1632         struct v4l2_rect *c = &dev->crop_current;
1633
1634         if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1635             crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
1636                 return -EINVAL;
1637
1638         if (dev->overlay_owner)
1639                 return -EBUSY;
1640         if (vb2_is_streaming(&dev->video_vbq))
1641                 return -EBUSY;
1642
1643         *c = crop->c;
1644         if (c->top < b->top)
1645                 c->top = b->top;
1646         if (c->top > b->top + b->height)
1647                 c->top = b->top + b->height;
1648         if (c->height > b->top - c->top + b->height)
1649                 c->height = b->top - c->top + b->height;
1650
1651         if (c->left < b->left)
1652                 c->left = b->left;
1653         if (c->left > b->left + b->width)
1654                 c->left = b->left + b->width;
1655         if (c->width > b->left - c->left + b->width)
1656                 c->width = b->left - c->left + b->width;
1657         return 0;
1658 }
1659
1660 int saa7134_g_tuner(struct file *file, void *priv,
1661                                         struct v4l2_tuner *t)
1662 {
1663         struct saa7134_dev *dev = video_drvdata(file);
1664         int n;
1665
1666         if (0 != t->index)
1667                 return -EINVAL;
1668         memset(t, 0, sizeof(*t));
1669         for (n = 0; n < SAA7134_INPUT_MAX; n++) {
1670                 if (card_in(dev, n).tv)
1671                         break;
1672         }
1673         if (n == SAA7134_INPUT_MAX)
1674                 return -EINVAL;
1675         if (NULL != card_in(dev, n).name) {
1676                 strcpy(t->name, "Television");
1677                 t->type = V4L2_TUNER_ANALOG_TV;
1678                 saa_call_all(dev, tuner, g_tuner, t);
1679                 t->capability = V4L2_TUNER_CAP_NORM |
1680                         V4L2_TUNER_CAP_STEREO |
1681                         V4L2_TUNER_CAP_LANG1 |
1682                         V4L2_TUNER_CAP_LANG2;
1683                 t->rxsubchans = saa7134_tvaudio_getstereo(dev);
1684                 t->audmode = saa7134_tvaudio_rx2mode(t->rxsubchans);
1685         }
1686         if (0 != (saa_readb(SAA7134_STATUS_VIDEO1) & 0x03))
1687                 t->signal = 0xffff;
1688         return 0;
1689 }
1690 EXPORT_SYMBOL_GPL(saa7134_g_tuner);
1691
1692 int saa7134_s_tuner(struct file *file, void *priv,
1693                                         const struct v4l2_tuner *t)
1694 {
1695         struct saa7134_dev *dev = video_drvdata(file);
1696         int rx, mode;
1697
1698         if (0 != t->index)
1699                 return -EINVAL;
1700
1701         mode = dev->thread.mode;
1702         if (UNSET == mode) {
1703                 rx   = saa7134_tvaudio_getstereo(dev);
1704                 mode = saa7134_tvaudio_rx2mode(rx);
1705         }
1706         if (mode != t->audmode)
1707                 dev->thread.mode = t->audmode;
1708
1709         return 0;
1710 }
1711 EXPORT_SYMBOL_GPL(saa7134_s_tuner);
1712
1713 int saa7134_g_frequency(struct file *file, void *priv,
1714                                         struct v4l2_frequency *f)
1715 {
1716         struct saa7134_dev *dev = video_drvdata(file);
1717
1718         if (0 != f->tuner)
1719                 return -EINVAL;
1720
1721         saa_call_all(dev, tuner, g_frequency, f);
1722
1723         return 0;
1724 }
1725 EXPORT_SYMBOL_GPL(saa7134_g_frequency);
1726
1727 int saa7134_s_frequency(struct file *file, void *priv,
1728                                         const struct v4l2_frequency *f)
1729 {
1730         struct saa7134_dev *dev = video_drvdata(file);
1731
1732         if (0 != f->tuner)
1733                 return -EINVAL;
1734
1735         saa_call_all(dev, tuner, s_frequency, f);
1736
1737         saa7134_tvaudio_do_scan(dev);
1738         return 0;
1739 }
1740 EXPORT_SYMBOL_GPL(saa7134_s_frequency);
1741
1742 static int saa7134_enum_fmt_vid_cap(struct file *file, void  *priv,
1743                                         struct v4l2_fmtdesc *f)
1744 {
1745         if (f->index >= FORMATS)
1746                 return -EINVAL;
1747
1748         strlcpy(f->description, formats[f->index].name,
1749                 sizeof(f->description));
1750
1751         f->pixelformat = formats[f->index].fourcc;
1752
1753         return 0;
1754 }
1755
1756 static int saa7134_enum_fmt_vid_overlay(struct file *file, void  *priv,
1757                                         struct v4l2_fmtdesc *f)
1758 {
1759         if (saa7134_no_overlay > 0) {
1760                 printk(KERN_ERR "V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1761                 return -EINVAL;
1762         }
1763
1764         if ((f->index >= FORMATS) || formats[f->index].planar)
1765                 return -EINVAL;
1766
1767         strlcpy(f->description, formats[f->index].name,
1768                 sizeof(f->description));
1769
1770         f->pixelformat = formats[f->index].fourcc;
1771
1772         return 0;
1773 }
1774
1775 static int saa7134_g_fbuf(struct file *file, void *f,
1776                                 struct v4l2_framebuffer *fb)
1777 {
1778         struct saa7134_dev *dev = video_drvdata(file);
1779
1780         *fb = dev->ovbuf;
1781         fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
1782
1783         return 0;
1784 }
1785
1786 static int saa7134_s_fbuf(struct file *file, void *f,
1787                                         const struct v4l2_framebuffer *fb)
1788 {
1789         struct saa7134_dev *dev = video_drvdata(file);
1790         struct saa7134_format *fmt;
1791
1792         if (!capable(CAP_SYS_ADMIN) &&
1793            !capable(CAP_SYS_RAWIO))
1794                 return -EPERM;
1795
1796         /* check args */
1797         fmt = format_by_fourcc(fb->fmt.pixelformat);
1798         if (NULL == fmt)
1799                 return -EINVAL;
1800
1801         /* ok, accept it */
1802         dev->ovbuf = *fb;
1803         dev->ovfmt = fmt;
1804         if (0 == dev->ovbuf.fmt.bytesperline)
1805                 dev->ovbuf.fmt.bytesperline =
1806                         dev->ovbuf.fmt.width*fmt->depth/8;
1807         return 0;
1808 }
1809
1810 static int saa7134_overlay(struct file *file, void *priv, unsigned int on)
1811 {
1812         struct saa7134_dev *dev = video_drvdata(file);
1813         unsigned long flags;
1814
1815         if (on) {
1816                 if (saa7134_no_overlay > 0) {
1817                         dprintk("no_overlay\n");
1818                         return -EINVAL;
1819                 }
1820
1821                 if (dev->overlay_owner && priv != dev->overlay_owner)
1822                         return -EBUSY;
1823                 dev->overlay_owner = priv;
1824                 spin_lock_irqsave(&dev->slock, flags);
1825                 start_preview(dev);
1826                 spin_unlock_irqrestore(&dev->slock, flags);
1827         }
1828         if (!on) {
1829                 if (priv != dev->overlay_owner)
1830                         return -EINVAL;
1831                 spin_lock_irqsave(&dev->slock, flags);
1832                 stop_preview(dev);
1833                 spin_unlock_irqrestore(&dev->slock, flags);
1834                 dev->overlay_owner = NULL;
1835         }
1836         return 0;
1837 }
1838
1839 #ifdef CONFIG_VIDEO_ADV_DEBUG
1840 static int vidioc_g_register (struct file *file, void *priv,
1841                               struct v4l2_dbg_register *reg)
1842 {
1843         struct saa7134_dev *dev = video_drvdata(file);
1844
1845         reg->val = saa_readb(reg->reg & 0xffffff);
1846         reg->size = 1;
1847         return 0;
1848 }
1849
1850 static int vidioc_s_register (struct file *file, void *priv,
1851                                 const struct v4l2_dbg_register *reg)
1852 {
1853         struct saa7134_dev *dev = video_drvdata(file);
1854
1855         saa_writeb(reg->reg & 0xffffff, reg->val);
1856         return 0;
1857 }
1858 #endif
1859
1860 static int radio_g_tuner(struct file *file, void *priv,
1861                                         struct v4l2_tuner *t)
1862 {
1863         struct saa7134_dev *dev = video_drvdata(file);
1864
1865         if (0 != t->index)
1866                 return -EINVAL;
1867
1868         strcpy(t->name, "Radio");
1869
1870         saa_call_all(dev, tuner, g_tuner, t);
1871         t->audmode &= V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO;
1872         if (dev->input->amux == TV) {
1873                 t->signal = 0xf800 - ((saa_readb(0x581) & 0x1f) << 11);
1874                 t->rxsubchans = (saa_readb(0x529) & 0x08) ?
1875                                 V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
1876         }
1877         return 0;
1878 }
1879 static int radio_s_tuner(struct file *file, void *priv,
1880                                         const struct v4l2_tuner *t)
1881 {
1882         struct saa7134_dev *dev = video_drvdata(file);
1883
1884         if (0 != t->index)
1885                 return -EINVAL;
1886
1887         saa_call_all(dev, tuner, s_tuner, t);
1888         return 0;
1889 }
1890
1891 static const struct v4l2_file_operations video_fops =
1892 {
1893         .owner    = THIS_MODULE,
1894         .open     = video_open,
1895         .release  = video_release,
1896         .read     = vb2_fop_read,
1897         .poll     = vb2_fop_poll,
1898         .mmap     = vb2_fop_mmap,
1899         .unlocked_ioctl   = video_ioctl2,
1900 };
1901
1902 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1903         .vidioc_querycap                = saa7134_querycap,
1904         .vidioc_enum_fmt_vid_cap        = saa7134_enum_fmt_vid_cap,
1905         .vidioc_g_fmt_vid_cap           = saa7134_g_fmt_vid_cap,
1906         .vidioc_try_fmt_vid_cap         = saa7134_try_fmt_vid_cap,
1907         .vidioc_s_fmt_vid_cap           = saa7134_s_fmt_vid_cap,
1908         .vidioc_enum_fmt_vid_overlay    = saa7134_enum_fmt_vid_overlay,
1909         .vidioc_g_fmt_vid_overlay       = saa7134_g_fmt_vid_overlay,
1910         .vidioc_try_fmt_vid_overlay     = saa7134_try_fmt_vid_overlay,
1911         .vidioc_s_fmt_vid_overlay       = saa7134_s_fmt_vid_overlay,
1912         .vidioc_g_fmt_vbi_cap           = saa7134_try_get_set_fmt_vbi_cap,
1913         .vidioc_try_fmt_vbi_cap         = saa7134_try_get_set_fmt_vbi_cap,
1914         .vidioc_s_fmt_vbi_cap           = saa7134_try_get_set_fmt_vbi_cap,
1915         .vidioc_cropcap                 = saa7134_cropcap,
1916         .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1917         .vidioc_querybuf                = vb2_ioctl_querybuf,
1918         .vidioc_qbuf                    = vb2_ioctl_qbuf,
1919         .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1920         .vidioc_s_std                   = saa7134_s_std,
1921         .vidioc_g_std                   = saa7134_g_std,
1922         .vidioc_querystd                = saa7134_querystd,
1923         .vidioc_enum_input              = saa7134_enum_input,
1924         .vidioc_g_input                 = saa7134_g_input,
1925         .vidioc_s_input                 = saa7134_s_input,
1926         .vidioc_streamon                = vb2_ioctl_streamon,
1927         .vidioc_streamoff               = vb2_ioctl_streamoff,
1928         .vidioc_g_tuner                 = saa7134_g_tuner,
1929         .vidioc_s_tuner                 = saa7134_s_tuner,
1930         .vidioc_g_crop                  = saa7134_g_crop,
1931         .vidioc_s_crop                  = saa7134_s_crop,
1932         .vidioc_g_fbuf                  = saa7134_g_fbuf,
1933         .vidioc_s_fbuf                  = saa7134_s_fbuf,
1934         .vidioc_overlay                 = saa7134_overlay,
1935         .vidioc_g_frequency             = saa7134_g_frequency,
1936         .vidioc_s_frequency             = saa7134_s_frequency,
1937 #ifdef CONFIG_VIDEO_ADV_DEBUG
1938         .vidioc_g_register              = vidioc_g_register,
1939         .vidioc_s_register              = vidioc_s_register,
1940 #endif
1941         .vidioc_log_status              = v4l2_ctrl_log_status,
1942         .vidioc_subscribe_event         = v4l2_ctrl_subscribe_event,
1943         .vidioc_unsubscribe_event       = v4l2_event_unsubscribe,
1944 };
1945
1946 static const struct v4l2_file_operations radio_fops = {
1947         .owner    = THIS_MODULE,
1948         .open     = video_open,
1949         .read     = radio_read,
1950         .release  = video_release,
1951         .unlocked_ioctl = video_ioctl2,
1952         .poll     = radio_poll,
1953 };
1954
1955 static const struct v4l2_ioctl_ops radio_ioctl_ops = {
1956         .vidioc_querycap        = saa7134_querycap,
1957         .vidioc_g_tuner         = radio_g_tuner,
1958         .vidioc_s_tuner         = radio_s_tuner,
1959         .vidioc_g_frequency     = saa7134_g_frequency,
1960         .vidioc_s_frequency     = saa7134_s_frequency,
1961         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1962         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1963 };
1964
1965 /* ----------------------------------------------------------- */
1966 /* exported stuff                                              */
1967
1968 struct video_device saa7134_video_template = {
1969         .name                           = "saa7134-video",
1970         .fops                           = &video_fops,
1971         .ioctl_ops                      = &video_ioctl_ops,
1972         .tvnorms                        = SAA7134_NORMS,
1973 };
1974
1975 struct video_device saa7134_radio_template = {
1976         .name                   = "saa7134-radio",
1977         .fops                   = &radio_fops,
1978         .ioctl_ops              = &radio_ioctl_ops,
1979 };
1980
1981 static const struct v4l2_ctrl_ops saa7134_ctrl_ops = {
1982         .s_ctrl = saa7134_s_ctrl,
1983 };
1984
1985 static const struct v4l2_ctrl_config saa7134_ctrl_invert = {
1986         .ops = &saa7134_ctrl_ops,
1987         .id = V4L2_CID_PRIVATE_INVERT,
1988         .name = "Invert",
1989         .type = V4L2_CTRL_TYPE_BOOLEAN,
1990         .min = 0,
1991         .max = 1,
1992         .step = 1,
1993 };
1994
1995 static const struct v4l2_ctrl_config saa7134_ctrl_y_odd = {
1996         .ops = &saa7134_ctrl_ops,
1997         .id = V4L2_CID_PRIVATE_Y_ODD,
1998         .name = "Y Offset Odd Field",
1999         .type = V4L2_CTRL_TYPE_INTEGER,
2000         .min = 0,
2001         .max = 128,
2002         .step = 1,
2003 };
2004
2005 static const struct v4l2_ctrl_config saa7134_ctrl_y_even = {
2006         .ops = &saa7134_ctrl_ops,
2007         .id = V4L2_CID_PRIVATE_Y_EVEN,
2008         .name = "Y Offset Even Field",
2009         .type = V4L2_CTRL_TYPE_INTEGER,
2010         .min = 0,
2011         .max = 128,
2012         .step = 1,
2013 };
2014
2015 static const struct v4l2_ctrl_config saa7134_ctrl_automute = {
2016         .ops = &saa7134_ctrl_ops,
2017         .id = V4L2_CID_PRIVATE_AUTOMUTE,
2018         .name = "Automute",
2019         .type = V4L2_CTRL_TYPE_BOOLEAN,
2020         .min = 0,
2021         .max = 1,
2022         .step = 1,
2023         .def = 1,
2024 };
2025
2026 int saa7134_video_init1(struct saa7134_dev *dev)
2027 {
2028         struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
2029         struct vb2_queue *q;
2030         int ret;
2031
2032         /* sanitycheck insmod options */
2033         if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
2034                 gbuffers = 2;
2035         if (gbufsize > gbufsize_max)
2036                 gbufsize = gbufsize_max;
2037         gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
2038
2039         v4l2_ctrl_handler_init(hdl, 11);
2040         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2041                         V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
2042         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2043                         V4L2_CID_CONTRAST, 0, 127, 1, 68);
2044         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2045                         V4L2_CID_SATURATION, 0, 127, 1, 64);
2046         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2047                         V4L2_CID_HUE, -128, 127, 1, 0);
2048         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2049                         V4L2_CID_HFLIP, 0, 1, 1, 0);
2050         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2051                         V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
2052         v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2053                         V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
2054         v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_invert, NULL);
2055         v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_y_odd, NULL);
2056         v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_y_even, NULL);
2057         v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_automute, NULL);
2058         if (hdl->error)
2059                 return hdl->error;
2060         if (card_has_radio(dev)) {
2061                 hdl = &dev->radio_ctrl_handler;
2062                 v4l2_ctrl_handler_init(hdl, 2);
2063                 v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler,
2064                                 v4l2_ctrl_radio_filter);
2065                 if (hdl->error)
2066                         return hdl->error;
2067         }
2068         dev->ctl_mute       = 1;
2069
2070         if (dev->tda9887_conf && saa7134_ctrl_automute.def)
2071                 dev->tda9887_conf |= TDA9887_AUTOMUTE;
2072         dev->automute       = 0;
2073
2074         INIT_LIST_HEAD(&dev->video_q.queue);
2075         init_timer(&dev->video_q.timeout);
2076         dev->video_q.timeout.function = saa7134_buffer_timeout;
2077         dev->video_q.timeout.data     = (unsigned long)(&dev->video_q);
2078         dev->video_q.dev              = dev;
2079         dev->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
2080         dev->width    = 720;
2081         dev->height   = 576;
2082         dev->field = V4L2_FIELD_INTERLACED;
2083         dev->win.w.width = dev->width;
2084         dev->win.w.height = dev->height;
2085         dev->win.field = V4L2_FIELD_INTERLACED;
2086         dev->ovbuf.fmt.width = dev->width;
2087         dev->ovbuf.fmt.height = dev->height;
2088         dev->ovbuf.fmt.pixelformat = dev->fmt->fourcc;
2089         dev->ovbuf.fmt.colorspace = V4L2_COLORSPACE_SMPTE170M;
2090
2091         if (saa7134_boards[dev->board].video_out)
2092                 saa7134_videoport_init(dev);
2093
2094         q = &dev->video_vbq;
2095         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2096         /*
2097          * Do not add VB2_USERPTR unless explicitly requested: the saa7134 DMA
2098          * engine cannot handle transfers that do not start at the beginning
2099          * of a page. A user-provided pointer can start anywhere in a page, so
2100          * USERPTR support is a no-go unless the application knows about these
2101          * limitations and has special support for this.
2102          */
2103         q->io_modes = VB2_MMAP | VB2_READ;
2104         if (saa7134_userptr)
2105                 q->io_modes |= VB2_USERPTR;
2106         q->drv_priv = &dev->video_q;
2107         q->ops = &vb2_qops;
2108         q->gfp_flags = GFP_DMA32;
2109         q->mem_ops = &vb2_dma_sg_memops;
2110         q->buf_struct_size = sizeof(struct saa7134_buf);
2111         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
2112         q->lock = &dev->lock;
2113         ret = vb2_queue_init(q);
2114         if (ret)
2115                 return ret;
2116         saa7134_pgtable_alloc(dev->pci, &dev->video_q.pt);
2117
2118         q = &dev->vbi_vbq;
2119         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
2120         /* Don't add VB2_USERPTR, see comment above */
2121         q->io_modes = VB2_MMAP | VB2_READ;
2122         if (saa7134_userptr)
2123                 q->io_modes |= VB2_USERPTR;
2124         q->drv_priv = &dev->vbi_q;
2125         q->ops = &saa7134_vbi_qops;
2126         q->gfp_flags = GFP_DMA32;
2127         q->mem_ops = &vb2_dma_sg_memops;
2128         q->buf_struct_size = sizeof(struct saa7134_buf);
2129         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
2130         q->lock = &dev->lock;
2131         ret = vb2_queue_init(q);
2132         if (ret)
2133                 return ret;
2134         saa7134_pgtable_alloc(dev->pci, &dev->vbi_q.pt);
2135
2136         return 0;
2137 }
2138
2139 void saa7134_video_fini(struct saa7134_dev *dev)
2140 {
2141         /* free stuff */
2142         vb2_queue_release(&dev->video_vbq);
2143         saa7134_pgtable_free(dev->pci, &dev->video_q.pt);
2144         vb2_queue_release(&dev->vbi_vbq);
2145         saa7134_pgtable_free(dev->pci, &dev->vbi_q.pt);
2146         v4l2_ctrl_handler_free(&dev->ctrl_handler);
2147         if (card_has_radio(dev))
2148                 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
2149 }
2150
2151 int saa7134_videoport_init(struct saa7134_dev *dev)
2152 {
2153         /* enable video output */
2154         int vo = saa7134_boards[dev->board].video_out;
2155         int video_reg;
2156         unsigned int vid_port_opts = saa7134_boards[dev->board].vid_port_opts;
2157
2158         /* Configure videoport */
2159         saa_writeb(SAA7134_VIDEO_PORT_CTRL0, video_out[vo][0]);
2160         video_reg = video_out[vo][1];
2161         if (vid_port_opts & SET_T_CODE_POLARITY_NON_INVERTED)
2162                 video_reg &= ~VP_T_CODE_P_INVERTED;
2163         saa_writeb(SAA7134_VIDEO_PORT_CTRL1, video_reg);
2164         saa_writeb(SAA7134_VIDEO_PORT_CTRL2, video_out[vo][2]);
2165         saa_writeb(SAA7134_VIDEO_PORT_CTRL4, video_out[vo][4]);
2166         video_reg = video_out[vo][5];
2167         if (vid_port_opts & SET_CLOCK_NOT_DELAYED)
2168                 video_reg &= ~VP_CLK_CTRL2_DELAYED;
2169         if (vid_port_opts & SET_CLOCK_INVERTED)
2170                 video_reg |= VP_CLK_CTRL1_INVERTED;
2171         saa_writeb(SAA7134_VIDEO_PORT_CTRL5, video_reg);
2172         video_reg = video_out[vo][6];
2173         if (vid_port_opts & SET_VSYNC_OFF) {
2174                 video_reg &= ~VP_VS_TYPE_MASK;
2175                 video_reg |= VP_VS_TYPE_OFF;
2176         }
2177         saa_writeb(SAA7134_VIDEO_PORT_CTRL6, video_reg);
2178         saa_writeb(SAA7134_VIDEO_PORT_CTRL7, video_out[vo][7]);
2179         saa_writeb(SAA7134_VIDEO_PORT_CTRL8, video_out[vo][8]);
2180
2181         /* Start videoport */
2182         saa_writeb(SAA7134_VIDEO_PORT_CTRL3, video_out[vo][3]);
2183
2184         return 0;
2185 }
2186
2187 int saa7134_video_init2(struct saa7134_dev *dev)
2188 {
2189         /* init video hw */
2190         set_tvnorm(dev,&tvnorms[0]);
2191         video_mux(dev,0);
2192         v4l2_ctrl_handler_setup(&dev->ctrl_handler);
2193         saa7134_tvaudio_setmute(dev);
2194         saa7134_tvaudio_setvolume(dev,dev->ctl_volume);
2195         return 0;
2196 }
2197
2198 void saa7134_irq_video_signalchange(struct saa7134_dev *dev)
2199 {
2200         static const char *st[] = {
2201                 "(no signal)", "NTSC", "PAL", "SECAM" };
2202         u32 st1,st2;
2203
2204         st1 = saa_readb(SAA7134_STATUS_VIDEO1);
2205         st2 = saa_readb(SAA7134_STATUS_VIDEO2);
2206         dprintk("DCSDT: pll: %s, sync: %s, norm: %s\n",
2207                 (st1 & 0x40) ? "not locked" : "locked",
2208                 (st2 & 0x40) ? "no"         : "yes",
2209                 st[st1 & 0x03]);
2210         dev->nosignal = (st1 & 0x40) || (st2 & 0x40)  || !(st2 & 0x1);
2211
2212         if (dev->nosignal) {
2213                 /* no video signal -> mute audio */
2214                 if (dev->ctl_automute)
2215                         dev->automute = 1;
2216                 saa7134_tvaudio_setmute(dev);
2217         } else {
2218                 /* wake up tvaudio audio carrier scan thread */
2219                 saa7134_tvaudio_do_scan(dev);
2220         }
2221
2222         if ((st2 & 0x80) && !noninterlaced && !dev->nosignal)
2223                 saa_clearb(SAA7134_SYNC_CTRL, 0x20);
2224         else
2225                 saa_setb(SAA7134_SYNC_CTRL, 0x20);
2226
2227         if (dev->mops && dev->mops->signal_change)
2228                 dev->mops->signal_change(dev);
2229 }
2230
2231
2232 void saa7134_irq_video_done(struct saa7134_dev *dev, unsigned long status)
2233 {
2234         enum v4l2_field field;
2235
2236         spin_lock(&dev->slock);
2237         if (dev->video_q.curr) {
2238                 field = dev->field;
2239                 if (V4L2_FIELD_HAS_BOTH(field)) {
2240                         /* make sure we have seen both fields */
2241                         if ((status & 0x10) == 0x00) {
2242                                 dev->video_q.curr->top_seen = 1;
2243                                 goto done;
2244                         }
2245                         if (!dev->video_q.curr->top_seen)
2246                                 goto done;
2247                 } else if (field == V4L2_FIELD_TOP) {
2248                         if ((status & 0x10) != 0x10)
2249                                 goto done;
2250                 } else if (field == V4L2_FIELD_BOTTOM) {
2251                         if ((status & 0x10) != 0x00)
2252                                 goto done;
2253                 }
2254                 saa7134_buffer_finish(dev, &dev->video_q, VB2_BUF_STATE_DONE);
2255         }
2256         saa7134_buffer_next(dev, &dev->video_q);
2257
2258  done:
2259         spin_unlock(&dev->slock);
2260 }