linux/drivers/media/pci/saa7134/saa7134-video.c
<<
>>
Prefs
   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 "saa7134.h"
  24#include "saa7134-reg.h"
  25
  26#include <linux/init.h>
  27#include <linux/list.h>
  28#include <linux/module.h>
  29#include <linux/kernel.h>
  30#include <linux/slab.h>
  31#include <linux/sort.h>
  32
  33#include <media/v4l2-common.h>
  34#include <media/v4l2-event.h>
  35#include <media/i2c/saa6588.h>
  36
  37/* ------------------------------------------------------------------ */
  38
  39unsigned int video_debug;
  40static unsigned int gbuffers      = 8;
  41static unsigned int noninterlaced; /* 0 */
  42static unsigned int gbufsize      = 720*576*4;
  43static unsigned int gbufsize_max  = 720*576*4;
  44static char secam[] = "--";
  45module_param(video_debug, int, 0644);
  46MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
  47module_param(gbuffers, int, 0444);
  48MODULE_PARM_DESC(gbuffers,"number of capture buffers, range 2-32");
  49module_param(noninterlaced, int, 0644);
  50MODULE_PARM_DESC(noninterlaced,"capture non interlaced video");
  51module_param_string(secam, secam, sizeof(secam), 0644);
  52MODULE_PARM_DESC(secam, "force SECAM variant, either DK,L or Lc");
  53
  54
  55#define video_dbg(fmt, arg...) do { \
  56        if (video_debug & 0x04) \
  57                printk(KERN_DEBUG pr_fmt("video: " fmt), ## arg); \
  58        } while (0)
  59
  60/* ------------------------------------------------------------------ */
  61/* Defines for Video Output Port Register at address 0x191            */
  62
  63/* Bit 0: VIP code T bit polarity */
  64
  65#define VP_T_CODE_P_NON_INVERTED        0x00
  66#define VP_T_CODE_P_INVERTED            0x01
  67
  68/* ------------------------------------------------------------------ */
  69/* Defines for Video Output Port Register at address 0x195            */
  70
  71/* Bit 2: Video output clock delay control */
  72
  73#define VP_CLK_CTRL2_NOT_DELAYED        0x00
  74#define VP_CLK_CTRL2_DELAYED            0x04
  75
  76/* Bit 1: Video output clock invert control */
  77
  78#define VP_CLK_CTRL1_NON_INVERTED       0x00
  79#define VP_CLK_CTRL1_INVERTED           0x02
  80
  81/* ------------------------------------------------------------------ */
  82/* Defines for Video Output Port Register at address 0x196            */
  83
  84/* Bits 2 to 0: VSYNC pin video vertical sync type */
  85
  86#define VP_VS_TYPE_MASK                 0x07
  87
  88#define VP_VS_TYPE_OFF                  0x00
  89#define VP_VS_TYPE_V123                 0x01
  90#define VP_VS_TYPE_V_ITU                0x02
  91#define VP_VS_TYPE_VGATE_L              0x03
  92#define VP_VS_TYPE_RESERVED1            0x04
  93#define VP_VS_TYPE_RESERVED2            0x05
  94#define VP_VS_TYPE_F_ITU                0x06
  95#define VP_VS_TYPE_SC_FID               0x07
  96
  97/* ------------------------------------------------------------------ */
  98/* data structs for video                                             */
  99
 100static int video_out[][9] = {
 101        [CCIR656] = { 0x00, 0xb1, 0x00, 0xa1, 0x00, 0x04, 0x06, 0x00, 0x00 },
 102};
 103
 104static struct saa7134_format formats[] = {
 105        {
 106                .name     = "8 bpp gray",
 107                .fourcc   = V4L2_PIX_FMT_GREY,
 108                .depth    = 8,
 109                .pm       = 0x06,
 110        },{
 111                .name     = "15 bpp RGB, le",
 112                .fourcc   = V4L2_PIX_FMT_RGB555,
 113                .depth    = 16,
 114                .pm       = 0x13 | 0x80,
 115        },{
 116                .name     = "15 bpp RGB, be",
 117                .fourcc   = V4L2_PIX_FMT_RGB555X,
 118                .depth    = 16,
 119                .pm       = 0x13 | 0x80,
 120                .bswap    = 1,
 121        },{
 122                .name     = "16 bpp RGB, le",
 123                .fourcc   = V4L2_PIX_FMT_RGB565,
 124                .depth    = 16,
 125                .pm       = 0x10 | 0x80,
 126        },{
 127                .name     = "16 bpp RGB, be",
 128                .fourcc   = V4L2_PIX_FMT_RGB565X,
 129                .depth    = 16,
 130                .pm       = 0x10 | 0x80,
 131                .bswap    = 1,
 132        },{
 133                .name     = "24 bpp RGB, le",
 134                .fourcc   = V4L2_PIX_FMT_BGR24,
 135                .depth    = 24,
 136                .pm       = 0x11,
 137        },{
 138                .name     = "24 bpp RGB, be",
 139                .fourcc   = V4L2_PIX_FMT_RGB24,
 140                .depth    = 24,
 141                .pm       = 0x11,
 142                .bswap    = 1,
 143        },{
 144                .name     = "32 bpp RGB, le",
 145                .fourcc   = V4L2_PIX_FMT_BGR32,
 146                .depth    = 32,
 147                .pm       = 0x12,
 148        },{
 149                .name     = "32 bpp RGB, be",
 150                .fourcc   = V4L2_PIX_FMT_RGB32,
 151                .depth    = 32,
 152                .pm       = 0x12,
 153                .bswap    = 1,
 154                .wswap    = 1,
 155        },{
 156                .name     = "4:2:2 packed, YUYV",
 157                .fourcc   = V4L2_PIX_FMT_YUYV,
 158                .depth    = 16,
 159                .pm       = 0x00,
 160                .bswap    = 1,
 161                .yuv      = 1,
 162        },{
 163                .name     = "4:2:2 packed, UYVY",
 164                .fourcc   = V4L2_PIX_FMT_UYVY,
 165                .depth    = 16,
 166                .pm       = 0x00,
 167                .yuv      = 1,
 168        },{
 169                .name     = "4:2:2 planar, Y-Cb-Cr",
 170                .fourcc   = V4L2_PIX_FMT_YUV422P,
 171                .depth    = 16,
 172                .pm       = 0x09,
 173                .yuv      = 1,
 174                .planar   = 1,
 175                .hshift   = 1,
 176                .vshift   = 0,
 177        },{
 178                .name     = "4:2:0 planar, Y-Cb-Cr",
 179                .fourcc   = V4L2_PIX_FMT_YUV420,
 180                .depth    = 12,
 181                .pm       = 0x0a,
 182                .yuv      = 1,
 183                .planar   = 1,
 184                .hshift   = 1,
 185                .vshift   = 1,
 186        },{
 187                .name     = "4:2:0 planar, Y-Cb-Cr",
 188                .fourcc   = V4L2_PIX_FMT_YVU420,
 189                .depth    = 12,
 190                .pm       = 0x0a,
 191                .yuv      = 1,
 192                .planar   = 1,
 193                .uvswap   = 1,
 194                .hshift   = 1,
 195                .vshift   = 1,
 196        }
 197};
 198#define FORMATS ARRAY_SIZE(formats)
 199
 200#define NORM_625_50                     \
 201                .h_start       = 0,     \
 202                .h_stop        = 719,   \
 203                .video_v_start = 24,    \
 204                .video_v_stop  = 311,   \
 205                .vbi_v_start_0 = 7,     \
 206                .vbi_v_stop_0  = 23,    \
 207                .vbi_v_start_1 = 319,   \
 208                .src_timing    = 4
 209
 210#define NORM_525_60                     \
 211                .h_start       = 0,     \
 212                .h_stop        = 719,   \
 213                .video_v_start = 23,    \
 214                .video_v_stop  = 262,   \
 215                .vbi_v_start_0 = 10,    \
 216                .vbi_v_stop_0  = 21,    \
 217                .vbi_v_start_1 = 273,   \
 218                .src_timing    = 7
 219
 220static struct saa7134_tvnorm tvnorms[] = {
 221        {
 222                .name          = "PAL", /* autodetect */
 223                .id            = V4L2_STD_PAL,
 224                NORM_625_50,
 225
 226                .sync_control  = 0x18,
 227                .luma_control  = 0x40,
 228                .chroma_ctrl1  = 0x81,
 229                .chroma_gain   = 0x2a,
 230                .chroma_ctrl2  = 0x06,
 231                .vgate_misc    = 0x1c,
 232
 233        },{
 234                .name          = "PAL-BG",
 235                .id            = V4L2_STD_PAL_BG,
 236                NORM_625_50,
 237
 238                .sync_control  = 0x18,
 239                .luma_control  = 0x40,
 240                .chroma_ctrl1  = 0x81,
 241                .chroma_gain   = 0x2a,
 242                .chroma_ctrl2  = 0x06,
 243                .vgate_misc    = 0x1c,
 244
 245        },{
 246                .name          = "PAL-I",
 247                .id            = V4L2_STD_PAL_I,
 248                NORM_625_50,
 249
 250                .sync_control  = 0x18,
 251                .luma_control  = 0x40,
 252                .chroma_ctrl1  = 0x81,
 253                .chroma_gain   = 0x2a,
 254                .chroma_ctrl2  = 0x06,
 255                .vgate_misc    = 0x1c,
 256
 257        },{
 258                .name          = "PAL-DK",
 259                .id            = V4L2_STD_PAL_DK,
 260                NORM_625_50,
 261
 262                .sync_control  = 0x18,
 263                .luma_control  = 0x40,
 264                .chroma_ctrl1  = 0x81,
 265                .chroma_gain   = 0x2a,
 266                .chroma_ctrl2  = 0x06,
 267                .vgate_misc    = 0x1c,
 268
 269        },{
 270                .name          = "NTSC",
 271                .id            = V4L2_STD_NTSC,
 272                NORM_525_60,
 273
 274                .sync_control  = 0x59,
 275                .luma_control  = 0x40,
 276                .chroma_ctrl1  = 0x89,
 277                .chroma_gain   = 0x2a,
 278                .chroma_ctrl2  = 0x0e,
 279                .vgate_misc    = 0x18,
 280
 281        },{
 282                .name          = "SECAM",
 283                .id            = V4L2_STD_SECAM,
 284                NORM_625_50,
 285
 286                .sync_control  = 0x18,
 287                .luma_control  = 0x1b,
 288                .chroma_ctrl1  = 0xd1,
 289                .chroma_gain   = 0x80,
 290                .chroma_ctrl2  = 0x00,
 291                .vgate_misc    = 0x1c,
 292
 293        },{
 294                .name          = "SECAM-DK",
 295                .id            = V4L2_STD_SECAM_DK,
 296                NORM_625_50,
 297
 298                .sync_control  = 0x18,
 299                .luma_control  = 0x1b,
 300                .chroma_ctrl1  = 0xd1,
 301                .chroma_gain   = 0x80,
 302                .chroma_ctrl2  = 0x00,
 303                .vgate_misc    = 0x1c,
 304
 305        },{
 306                .name          = "SECAM-L",
 307                .id            = V4L2_STD_SECAM_L,
 308                NORM_625_50,
 309
 310                .sync_control  = 0x18,
 311                .luma_control  = 0x1b,
 312                .chroma_ctrl1  = 0xd1,
 313                .chroma_gain   = 0x80,
 314                .chroma_ctrl2  = 0x00,
 315                .vgate_misc    = 0x1c,
 316
 317        },{
 318                .name          = "SECAM-Lc",
 319                .id            = V4L2_STD_SECAM_LC,
 320                NORM_625_50,
 321
 322                .sync_control  = 0x18,
 323                .luma_control  = 0x1b,
 324                .chroma_ctrl1  = 0xd1,
 325                .chroma_gain   = 0x80,
 326                .chroma_ctrl2  = 0x00,
 327                .vgate_misc    = 0x1c,
 328
 329        },{
 330                .name          = "PAL-M",
 331                .id            = V4L2_STD_PAL_M,
 332                NORM_525_60,
 333
 334                .sync_control  = 0x59,
 335                .luma_control  = 0x40,
 336                .chroma_ctrl1  = 0xb9,
 337                .chroma_gain   = 0x2a,
 338                .chroma_ctrl2  = 0x0e,
 339                .vgate_misc    = 0x18,
 340
 341        },{
 342                .name          = "PAL-Nc",
 343                .id            = V4L2_STD_PAL_Nc,
 344                NORM_625_50,
 345
 346                .sync_control  = 0x18,
 347                .luma_control  = 0x40,
 348                .chroma_ctrl1  = 0xa1,
 349                .chroma_gain   = 0x2a,
 350                .chroma_ctrl2  = 0x06,
 351                .vgate_misc    = 0x1c,
 352
 353        },{
 354                .name          = "PAL-60",
 355                .id            = V4L2_STD_PAL_60,
 356
 357                .h_start       = 0,
 358                .h_stop        = 719,
 359                .video_v_start = 23,
 360                .video_v_stop  = 262,
 361                .vbi_v_start_0 = 10,
 362                .vbi_v_stop_0  = 21,
 363                .vbi_v_start_1 = 273,
 364                .src_timing    = 7,
 365
 366                .sync_control  = 0x18,
 367                .luma_control  = 0x40,
 368                .chroma_ctrl1  = 0x81,
 369                .chroma_gain   = 0x2a,
 370                .chroma_ctrl2  = 0x06,
 371                .vgate_misc    = 0x1c,
 372        }
 373};
 374#define TVNORMS ARRAY_SIZE(tvnorms)
 375
 376static struct saa7134_format* format_by_fourcc(unsigned int fourcc)
 377{
 378        unsigned int i;
 379
 380        for (i = 0; i < FORMATS; i++)
 381                if (formats[i].fourcc == fourcc)
 382                        return formats+i;
 383        return NULL;
 384}
 385
 386/* ------------------------------------------------------------------ */
 387
 388static void set_tvnorm(struct saa7134_dev *dev, struct saa7134_tvnorm *norm)
 389{
 390        video_dbg("set tv norm = %s\n", norm->name);
 391        dev->tvnorm = norm;
 392
 393        /* setup cropping */
 394        dev->crop_bounds.left    = norm->h_start;
 395        dev->crop_defrect.left   = norm->h_start;
 396        dev->crop_bounds.width   = norm->h_stop - norm->h_start +1;
 397        dev->crop_defrect.width  = norm->h_stop - norm->h_start +1;
 398
 399        dev->crop_bounds.top     = (norm->vbi_v_stop_0+1)*2;
 400        dev->crop_defrect.top    = norm->video_v_start*2;
 401        dev->crop_bounds.height  = ((norm->id & V4L2_STD_525_60) ? 524 : 624)
 402                - dev->crop_bounds.top;
 403        dev->crop_defrect.height = (norm->video_v_stop - norm->video_v_start +1)*2;
 404
 405        dev->crop_current = dev->crop_defrect;
 406
 407        saa7134_set_tvnorm_hw(dev);
 408}
 409
 410static void video_mux(struct saa7134_dev *dev, int input)
 411{
 412        video_dbg("video input = %d [%s]\n",
 413                  input, saa7134_input_name[card_in(dev, input).type]);
 414        dev->ctl_input = input;
 415        set_tvnorm(dev, dev->tvnorm);
 416        saa7134_tvaudio_setinput(dev, &card_in(dev, input));
 417}
 418
 419
 420static void saa7134_set_decoder(struct saa7134_dev *dev)
 421{
 422        int luma_control, sync_control, chroma_ctrl1, mux;
 423
 424        struct saa7134_tvnorm *norm = dev->tvnorm;
 425        mux = card_in(dev, dev->ctl_input).vmux;
 426
 427        luma_control = norm->luma_control;
 428        sync_control = norm->sync_control;
 429        chroma_ctrl1 = norm->chroma_ctrl1;
 430
 431        if (mux > 5)
 432                luma_control |= 0x80; /* svideo */
 433        if (noninterlaced || dev->nosignal)
 434                sync_control |= 0x20;
 435
 436        /* switch on auto standard detection */
 437        sync_control |= SAA7134_SYNC_CTRL_AUFD;
 438        chroma_ctrl1 |= SAA7134_CHROMA_CTRL1_AUTO0;
 439        chroma_ctrl1 &= ~SAA7134_CHROMA_CTRL1_FCTC;
 440        luma_control &= ~SAA7134_LUMA_CTRL_LDEL;
 441
 442        /* setup video decoder */
 443        saa_writeb(SAA7134_INCR_DELAY,            0x08);
 444        saa_writeb(SAA7134_ANALOG_IN_CTRL1,       0xc0 | mux);
 445        saa_writeb(SAA7134_ANALOG_IN_CTRL2,       0x00);
 446
 447        saa_writeb(SAA7134_ANALOG_IN_CTRL3,       0x90);
 448        saa_writeb(SAA7134_ANALOG_IN_CTRL4,       0x90);
 449        saa_writeb(SAA7134_HSYNC_START,           0xeb);
 450        saa_writeb(SAA7134_HSYNC_STOP,            0xe0);
 451        saa_writeb(SAA7134_SOURCE_TIMING1,        norm->src_timing);
 452
 453        saa_writeb(SAA7134_SYNC_CTRL,             sync_control);
 454        saa_writeb(SAA7134_LUMA_CTRL,             luma_control);
 455        saa_writeb(SAA7134_DEC_LUMA_BRIGHT,       dev->ctl_bright);
 456
 457        saa_writeb(SAA7134_DEC_LUMA_CONTRAST,
 458                dev->ctl_invert ? -dev->ctl_contrast : dev->ctl_contrast);
 459
 460        saa_writeb(SAA7134_DEC_CHROMA_SATURATION,
 461                dev->ctl_invert ? -dev->ctl_saturation : dev->ctl_saturation);
 462
 463        saa_writeb(SAA7134_DEC_CHROMA_HUE,        dev->ctl_hue);
 464        saa_writeb(SAA7134_CHROMA_CTRL1,          chroma_ctrl1);
 465        saa_writeb(SAA7134_CHROMA_GAIN,           norm->chroma_gain);
 466
 467        saa_writeb(SAA7134_CHROMA_CTRL2,          norm->chroma_ctrl2);
 468        saa_writeb(SAA7134_MODE_DELAY_CTRL,       0x00);
 469
 470        saa_writeb(SAA7134_ANALOG_ADC,            0x01);
 471        saa_writeb(SAA7134_VGATE_START,           0x11);
 472        saa_writeb(SAA7134_VGATE_STOP,            0xfe);
 473        saa_writeb(SAA7134_MISC_VGATE_MSB,        norm->vgate_misc);
 474        saa_writeb(SAA7134_RAW_DATA_GAIN,         0x40);
 475        saa_writeb(SAA7134_RAW_DATA_OFFSET,       0x80);
 476}
 477
 478void saa7134_set_tvnorm_hw(struct saa7134_dev *dev)
 479{
 480        saa7134_set_decoder(dev);
 481
 482        saa_call_all(dev, video, s_std, dev->tvnorm->id);
 483        /* Set the correct norm for the saa6752hs. This function
 484           does nothing if there is no saa6752hs. */
 485        saa_call_empress(dev, video, s_std, dev->tvnorm->id);
 486}
 487
 488static void set_h_prescale(struct saa7134_dev *dev, int task, int prescale)
 489{
 490        static const struct {
 491                int xpsc;
 492                int xacl;
 493                int xc2_1;
 494                int xdcg;
 495                int vpfy;
 496        } vals[] = {
 497                /* XPSC XACL XC2_1 XDCG VPFY */
 498                {    1,   0,    0,    0,   0 },
 499                {    2,   2,    1,    2,   2 },
 500                {    3,   4,    1,    3,   2 },
 501                {    4,   8,    1,    4,   2 },
 502                {    5,   8,    1,    4,   2 },
 503                {    6,   8,    1,    4,   3 },
 504                {    7,   8,    1,    4,   3 },
 505                {    8,  15,    0,    4,   3 },
 506                {    9,  15,    0,    4,   3 },
 507                {   10,  16,    1,    5,   3 },
 508        };
 509        static const int count = ARRAY_SIZE(vals);
 510        int i;
 511
 512        for (i = 0; i < count; i++)
 513                if (vals[i].xpsc == prescale)
 514                        break;
 515        if (i == count)
 516                return;
 517
 518        saa_writeb(SAA7134_H_PRESCALE(task), vals[i].xpsc);
 519        saa_writeb(SAA7134_ACC_LENGTH(task), vals[i].xacl);
 520        saa_writeb(SAA7134_LEVEL_CTRL(task),
 521                   (vals[i].xc2_1 << 3) | (vals[i].xdcg));
 522        saa_andorb(SAA7134_FIR_PREFILTER_CTRL(task), 0x0f,
 523                   (vals[i].vpfy << 2) | vals[i].vpfy);
 524}
 525
 526static void set_v_scale(struct saa7134_dev *dev, int task, int yscale)
 527{
 528        int val,mirror;
 529
 530        saa_writeb(SAA7134_V_SCALE_RATIO1(task), yscale &  0xff);
 531        saa_writeb(SAA7134_V_SCALE_RATIO2(task), yscale >> 8);
 532
 533        mirror = (dev->ctl_mirror) ? 0x02 : 0x00;
 534        if (yscale < 2048) {
 535                /* LPI */
 536                video_dbg("yscale LPI yscale=%d\n", yscale);
 537                saa_writeb(SAA7134_V_FILTER(task), 0x00 | mirror);
 538                saa_writeb(SAA7134_LUMA_CONTRAST(task), 0x40);
 539                saa_writeb(SAA7134_CHROMA_SATURATION(task), 0x40);
 540        } else {
 541                /* ACM */
 542                val = 0x40 * 1024 / yscale;
 543                video_dbg("yscale ACM yscale=%d val=0x%x\n", yscale, val);
 544                saa_writeb(SAA7134_V_FILTER(task), 0x01 | mirror);
 545                saa_writeb(SAA7134_LUMA_CONTRAST(task), val);
 546                saa_writeb(SAA7134_CHROMA_SATURATION(task), val);
 547        }
 548        saa_writeb(SAA7134_LUMA_BRIGHT(task),       0x80);
 549}
 550
 551static void set_size(struct saa7134_dev *dev, int task,
 552                     int width, int height, int interlace)
 553{
 554        int prescale,xscale,yscale,y_even,y_odd;
 555        int h_start, h_stop, v_start, v_stop;
 556        int div = interlace ? 2 : 1;
 557
 558        /* setup video scaler */
 559        h_start = dev->crop_current.left;
 560        v_start = dev->crop_current.top/2;
 561        h_stop  = (dev->crop_current.left + dev->crop_current.width -1);
 562        v_stop  = (dev->crop_current.top + dev->crop_current.height -1)/2;
 563
 564        saa_writeb(SAA7134_VIDEO_H_START1(task), h_start &  0xff);
 565        saa_writeb(SAA7134_VIDEO_H_START2(task), h_start >> 8);
 566        saa_writeb(SAA7134_VIDEO_H_STOP1(task),  h_stop  &  0xff);
 567        saa_writeb(SAA7134_VIDEO_H_STOP2(task),  h_stop  >> 8);
 568        saa_writeb(SAA7134_VIDEO_V_START1(task), v_start &  0xff);
 569        saa_writeb(SAA7134_VIDEO_V_START2(task), v_start >> 8);
 570        saa_writeb(SAA7134_VIDEO_V_STOP1(task),  v_stop  &  0xff);
 571        saa_writeb(SAA7134_VIDEO_V_STOP2(task),  v_stop  >> 8);
 572
 573        prescale = dev->crop_current.width / width;
 574        if (0 == prescale)
 575                prescale = 1;
 576        xscale = 1024 * dev->crop_current.width / prescale / width;
 577        yscale = 512 * div * dev->crop_current.height / height;
 578        video_dbg("prescale=%d xscale=%d yscale=%d\n",
 579                  prescale, xscale, yscale);
 580        set_h_prescale(dev,task,prescale);
 581        saa_writeb(SAA7134_H_SCALE_INC1(task),      xscale &  0xff);
 582        saa_writeb(SAA7134_H_SCALE_INC2(task),      xscale >> 8);
 583        set_v_scale(dev,task,yscale);
 584
 585        saa_writeb(SAA7134_VIDEO_PIXELS1(task),     width  & 0xff);
 586        saa_writeb(SAA7134_VIDEO_PIXELS2(task),     width  >> 8);
 587        saa_writeb(SAA7134_VIDEO_LINES1(task),      height/div & 0xff);
 588        saa_writeb(SAA7134_VIDEO_LINES2(task),      height/div >> 8);
 589
 590        /* deinterlace y offsets */
 591        y_odd  = dev->ctl_y_odd;
 592        y_even = dev->ctl_y_even;
 593        saa_writeb(SAA7134_V_PHASE_OFFSET0(task), y_odd);
 594        saa_writeb(SAA7134_V_PHASE_OFFSET1(task), y_even);
 595        saa_writeb(SAA7134_V_PHASE_OFFSET2(task), y_odd);
 596        saa_writeb(SAA7134_V_PHASE_OFFSET3(task), y_even);
 597}
 598
 599/* ------------------------------------------------------------------ */
 600
 601struct cliplist {
 602        __u16 position;
 603        __u8  enable;
 604        __u8  disable;
 605};
 606
 607static void set_cliplist(struct saa7134_dev *dev, int reg,
 608                        struct cliplist *cl, int entries, char *name)
 609{
 610        __u8 winbits = 0;
 611        int i;
 612
 613        for (i = 0; i < entries; i++) {
 614                winbits |= cl[i].enable;
 615                winbits &= ~cl[i].disable;
 616                if (i < 15 && cl[i].position == cl[i+1].position)
 617                        continue;
 618                saa_writeb(reg + 0, winbits);
 619                saa_writeb(reg + 2, cl[i].position & 0xff);
 620                saa_writeb(reg + 3, cl[i].position >> 8);
 621                video_dbg("clip: %s winbits=%02x pos=%d\n",
 622                        name,winbits,cl[i].position);
 623                reg += 8;
 624        }
 625        for (; reg < 0x400; reg += 8) {
 626                saa_writeb(reg+ 0, 0);
 627                saa_writeb(reg + 1, 0);
 628                saa_writeb(reg + 2, 0);
 629                saa_writeb(reg + 3, 0);
 630        }
 631}
 632
 633static int clip_range(int val)
 634{
 635        if (val < 0)
 636                val = 0;
 637        return val;
 638}
 639
 640/* Sort into smallest position first order */
 641static int cliplist_cmp(const void *a, const void *b)
 642{
 643        const struct cliplist *cla = a;
 644        const struct cliplist *clb = b;
 645        if (cla->position < clb->position)
 646                return -1;
 647        if (cla->position > clb->position)
 648                return 1;
 649        return 0;
 650}
 651
 652static int setup_clipping(struct saa7134_dev *dev, struct v4l2_clip *clips,
 653                          int nclips, int interlace)
 654{
 655        struct cliplist col[16], row[16];
 656        int cols = 0, rows = 0, i;
 657        int div = interlace ? 2 : 1;
 658
 659        memset(col, 0, sizeof(col));
 660        memset(row, 0, sizeof(row));
 661        for (i = 0; i < nclips && i < 8; i++) {
 662                col[cols].position = clip_range(clips[i].c.left);
 663                col[cols].enable   = (1 << i);
 664                cols++;
 665                col[cols].position = clip_range(clips[i].c.left+clips[i].c.width);
 666                col[cols].disable  = (1 << i);
 667                cols++;
 668                row[rows].position = clip_range(clips[i].c.top / div);
 669                row[rows].enable   = (1 << i);
 670                rows++;
 671                row[rows].position = clip_range((clips[i].c.top + clips[i].c.height)
 672                                                / div);
 673                row[rows].disable  = (1 << i);
 674                rows++;
 675        }
 676        sort(col, cols, sizeof col[0], cliplist_cmp, NULL);
 677        sort(row, rows, sizeof row[0], cliplist_cmp, NULL);
 678        set_cliplist(dev,0x380,col,cols,"cols");
 679        set_cliplist(dev,0x384,row,rows,"rows");
 680        return 0;
 681}
 682
 683static int verify_preview(struct saa7134_dev *dev, struct v4l2_window *win, bool try)
 684{
 685        enum v4l2_field field;
 686        int maxw, maxh;
 687
 688        if (!try && (dev->ovbuf.base == NULL || dev->ovfmt == NULL))
 689                return -EINVAL;
 690        if (win->w.width < 48)
 691                win->w.width = 48;
 692        if (win->w.height < 32)
 693                win->w.height = 32;
 694        if (win->clipcount > 8)
 695                win->clipcount = 8;
 696
 697        win->chromakey = 0;
 698        win->global_alpha = 0;
 699        field = win->field;
 700        maxw  = dev->crop_current.width;
 701        maxh  = dev->crop_current.height;
 702
 703        if (V4L2_FIELD_ANY == field) {
 704                field = (win->w.height > maxh/2)
 705                        ? V4L2_FIELD_INTERLACED
 706                        : V4L2_FIELD_TOP;
 707        }
 708        switch (field) {
 709        case V4L2_FIELD_TOP:
 710        case V4L2_FIELD_BOTTOM:
 711                maxh = maxh / 2;
 712                break;
 713        default:
 714                field = V4L2_FIELD_INTERLACED;
 715                break;
 716        }
 717
 718        win->field = field;
 719        if (win->w.width > maxw)
 720                win->w.width = maxw;
 721        if (win->w.height > maxh)
 722                win->w.height = maxh;
 723        return 0;
 724}
 725
 726static int start_preview(struct saa7134_dev *dev)
 727{
 728        unsigned long base,control,bpl;
 729        int err;
 730
 731        err = verify_preview(dev, &dev->win, false);
 732        if (0 != err)
 733                return err;
 734
 735        dev->ovfield = dev->win.field;
 736        video_dbg("start_preview %dx%d+%d+%d %s field=%s\n",
 737                dev->win.w.width, dev->win.w.height,
 738                dev->win.w.left, dev->win.w.top,
 739                dev->ovfmt->name, v4l2_field_names[dev->ovfield]);
 740
 741        /* setup window + clipping */
 742        set_size(dev, TASK_B, dev->win.w.width, dev->win.w.height,
 743                 V4L2_FIELD_HAS_BOTH(dev->ovfield));
 744        setup_clipping(dev, dev->clips, dev->nclips,
 745                       V4L2_FIELD_HAS_BOTH(dev->ovfield));
 746        if (dev->ovfmt->yuv)
 747                saa_andorb(SAA7134_DATA_PATH(TASK_B), 0x3f, 0x03);
 748        else
 749                saa_andorb(SAA7134_DATA_PATH(TASK_B), 0x3f, 0x01);
 750        saa_writeb(SAA7134_OFMT_VIDEO_B, dev->ovfmt->pm | 0x20);
 751
 752        /* dma: setup channel 1 (= Video Task B) */
 753        base  = (unsigned long)dev->ovbuf.base;
 754        base += dev->ovbuf.fmt.bytesperline * dev->win.w.top;
 755        base += dev->ovfmt->depth/8         * dev->win.w.left;
 756        bpl   = dev->ovbuf.fmt.bytesperline;
 757        control = SAA7134_RS_CONTROL_BURST_16;
 758        if (dev->ovfmt->bswap)
 759                control |= SAA7134_RS_CONTROL_BSWAP;
 760        if (dev->ovfmt->wswap)
 761                control |= SAA7134_RS_CONTROL_WSWAP;
 762        if (V4L2_FIELD_HAS_BOTH(dev->ovfield)) {
 763                saa_writel(SAA7134_RS_BA1(1),base);
 764                saa_writel(SAA7134_RS_BA2(1),base+bpl);
 765                saa_writel(SAA7134_RS_PITCH(1),bpl*2);
 766                saa_writel(SAA7134_RS_CONTROL(1),control);
 767        } else {
 768                saa_writel(SAA7134_RS_BA1(1),base);
 769                saa_writel(SAA7134_RS_BA2(1),base);
 770                saa_writel(SAA7134_RS_PITCH(1),bpl);
 771                saa_writel(SAA7134_RS_CONTROL(1),control);
 772        }
 773
 774        /* start dma */
 775        dev->ovenable = 1;
 776        saa7134_set_dmabits(dev);
 777
 778        return 0;
 779}
 780
 781static int stop_preview(struct saa7134_dev *dev)
 782{
 783        dev->ovenable = 0;
 784        saa7134_set_dmabits(dev);
 785        return 0;
 786}
 787
 788/*
 789 * Media Controller helper functions
 790 */
 791
 792static int saa7134_enable_analog_tuner(struct saa7134_dev *dev)
 793{
 794#ifdef CONFIG_MEDIA_CONTROLLER
 795        struct media_device *mdev = dev->media_dev;
 796        struct media_entity *source;
 797        struct media_link *link, *found_link = NULL;
 798        int ret, active_links = 0;
 799
 800        if (!mdev || !dev->decoder)
 801                return 0;
 802
 803        /*
 804         * This will find the tuner that is connected into the decoder.
 805         * Technically, this is not 100% correct, as the device may be
 806         * using an analog input instead of the tuner. However, as we can't
 807         * do DVB streaming while the DMA engine is being used for V4L2,
 808         * this should be enough for the actual needs.
 809         */
 810        list_for_each_entry(link, &dev->decoder->links, list) {
 811                if (link->sink->entity == dev->decoder) {
 812                        found_link = link;
 813                        if (link->flags & MEDIA_LNK_FL_ENABLED)
 814                                active_links++;
 815                        break;
 816                }
 817        }
 818
 819        if (active_links == 1 || !found_link)
 820                return 0;
 821
 822        source = found_link->source->entity;
 823        list_for_each_entry(link, &source->links, list) {
 824                struct media_entity *sink;
 825                int flags = 0;
 826
 827                sink = link->sink->entity;
 828
 829                if (sink == dev->decoder)
 830                        flags = MEDIA_LNK_FL_ENABLED;
 831
 832                ret = media_entity_setup_link(link, flags);
 833                if (ret) {
 834                        pr_err("Couldn't change link %s->%s to %s. Error %d\n",
 835                               source->name, sink->name,
 836                               flags ? "enabled" : "disabled",
 837                               ret);
 838                        return ret;
 839                }
 840        }
 841#endif
 842        return 0;
 843}
 844
 845/* ------------------------------------------------------------------ */
 846
 847static int buffer_activate(struct saa7134_dev *dev,
 848                           struct saa7134_buf *buf,
 849                           struct saa7134_buf *next)
 850{
 851        struct saa7134_dmaqueue *dmaq = buf->vb2.vb2_buf.vb2_queue->drv_priv;
 852        unsigned long base,control,bpl;
 853        unsigned long bpl_uv,lines_uv,base2,base3,tmp; /* planar */
 854
 855        video_dbg("buffer_activate buf=%p\n", buf);
 856        buf->top_seen = 0;
 857
 858        set_size(dev, TASK_A, dev->width, dev->height,
 859                 V4L2_FIELD_HAS_BOTH(dev->field));
 860        if (dev->fmt->yuv)
 861                saa_andorb(SAA7134_DATA_PATH(TASK_A), 0x3f, 0x03);
 862        else
 863                saa_andorb(SAA7134_DATA_PATH(TASK_A), 0x3f, 0x01);
 864        saa_writeb(SAA7134_OFMT_VIDEO_A, dev->fmt->pm);
 865
 866        /* DMA: setup channel 0 (= Video Task A0) */
 867        base  = saa7134_buffer_base(buf);
 868        if (dev->fmt->planar)
 869                bpl = dev->width;
 870        else
 871                bpl = (dev->width * dev->fmt->depth) / 8;
 872        control = SAA7134_RS_CONTROL_BURST_16 |
 873                SAA7134_RS_CONTROL_ME |
 874                (dmaq->pt.dma >> 12);
 875        if (dev->fmt->bswap)
 876                control |= SAA7134_RS_CONTROL_BSWAP;
 877        if (dev->fmt->wswap)
 878                control |= SAA7134_RS_CONTROL_WSWAP;
 879        if (V4L2_FIELD_HAS_BOTH(dev->field)) {
 880                /* interlaced */
 881                saa_writel(SAA7134_RS_BA1(0),base);
 882                saa_writel(SAA7134_RS_BA2(0),base+bpl);
 883                saa_writel(SAA7134_RS_PITCH(0),bpl*2);
 884        } else {
 885                /* non-interlaced */
 886                saa_writel(SAA7134_RS_BA1(0),base);
 887                saa_writel(SAA7134_RS_BA2(0),base);
 888                saa_writel(SAA7134_RS_PITCH(0),bpl);
 889        }
 890        saa_writel(SAA7134_RS_CONTROL(0),control);
 891
 892        if (dev->fmt->planar) {
 893                /* DMA: setup channel 4+5 (= planar task A) */
 894                bpl_uv   = bpl >> dev->fmt->hshift;
 895                lines_uv = dev->height >> dev->fmt->vshift;
 896                base2    = base + bpl * dev->height;
 897                base3    = base2 + bpl_uv * lines_uv;
 898                if (dev->fmt->uvswap)
 899                        tmp = base2, base2 = base3, base3 = tmp;
 900                video_dbg("uv: bpl=%ld lines=%ld base2/3=%ld/%ld\n",
 901                        bpl_uv,lines_uv,base2,base3);
 902                if (V4L2_FIELD_HAS_BOTH(dev->field)) {
 903                        /* interlaced */
 904                        saa_writel(SAA7134_RS_BA1(4),base2);
 905                        saa_writel(SAA7134_RS_BA2(4),base2+bpl_uv);
 906                        saa_writel(SAA7134_RS_PITCH(4),bpl_uv*2);
 907                        saa_writel(SAA7134_RS_BA1(5),base3);
 908                        saa_writel(SAA7134_RS_BA2(5),base3+bpl_uv);
 909                        saa_writel(SAA7134_RS_PITCH(5),bpl_uv*2);
 910                } else {
 911                        /* non-interlaced */
 912                        saa_writel(SAA7134_RS_BA1(4),base2);
 913                        saa_writel(SAA7134_RS_BA2(4),base2);
 914                        saa_writel(SAA7134_RS_PITCH(4),bpl_uv);
 915                        saa_writel(SAA7134_RS_BA1(5),base3);
 916                        saa_writel(SAA7134_RS_BA2(5),base3);
 917                        saa_writel(SAA7134_RS_PITCH(5),bpl_uv);
 918                }
 919                saa_writel(SAA7134_RS_CONTROL(4),control);
 920                saa_writel(SAA7134_RS_CONTROL(5),control);
 921        }
 922
 923        /* start DMA */
 924        saa7134_set_dmabits(dev);
 925        mod_timer(&dmaq->timeout, jiffies + BUFFER_TIMEOUT);
 926        return 0;
 927}
 928
 929static int buffer_init(struct vb2_buffer *vb2)
 930{
 931        struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
 932        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb2);
 933        struct saa7134_buf *buf = container_of(vbuf, struct saa7134_buf, vb2);
 934
 935        dmaq->curr = NULL;
 936        buf->activate = buffer_activate;
 937        return 0;
 938}
 939
 940static int buffer_prepare(struct vb2_buffer *vb2)
 941{
 942        struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
 943        struct saa7134_dev *dev = dmaq->dev;
 944        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb2);
 945        struct saa7134_buf *buf = container_of(vbuf, struct saa7134_buf, vb2);
 946        struct sg_table *dma = vb2_dma_sg_plane_desc(vb2, 0);
 947        unsigned int size;
 948
 949        if (dma->sgl->offset) {
 950                pr_err("The buffer is not page-aligned\n");
 951                return -EINVAL;
 952        }
 953        size = (dev->width * dev->height * dev->fmt->depth) >> 3;
 954        if (vb2_plane_size(vb2, 0) < size)
 955                return -EINVAL;
 956
 957        vb2_set_plane_payload(vb2, 0, size);
 958        vbuf->field = dev->field;
 959
 960        return saa7134_pgtable_build(dev->pci, &dmaq->pt, dma->sgl, dma->nents,
 961                                    saa7134_buffer_startpage(buf));
 962}
 963
 964static int queue_setup(struct vb2_queue *q,
 965                           unsigned int *nbuffers, unsigned int *nplanes,
 966                           unsigned int sizes[], void *alloc_ctxs[])
 967{
 968        struct saa7134_dmaqueue *dmaq = q->drv_priv;
 969        struct saa7134_dev *dev = dmaq->dev;
 970        int size = dev->fmt->depth * dev->width * dev->height >> 3;
 971
 972        if (dev->width    < 48 ||
 973            dev->height   < 32 ||
 974            dev->width/4  > dev->crop_current.width  ||
 975            dev->height/4 > dev->crop_current.height ||
 976            dev->width    > dev->crop_bounds.width  ||
 977            dev->height   > dev->crop_bounds.height)
 978                return -EINVAL;
 979
 980        *nbuffers = saa7134_buffer_count(size, *nbuffers);
 981        *nplanes = 1;
 982        sizes[0] = size;
 983        alloc_ctxs[0] = dev->alloc_ctx;
 984
 985        saa7134_enable_analog_tuner(dev);
 986
 987        return 0;
 988}
 989
 990/*
 991 * move buffer to hardware queue
 992 */
 993void saa7134_vb2_buffer_queue(struct vb2_buffer *vb)
 994{
 995        struct saa7134_dmaqueue *dmaq = vb->vb2_queue->drv_priv;
 996        struct saa7134_dev *dev = dmaq->dev;
 997        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 998        struct saa7134_buf *buf = container_of(vbuf, struct saa7134_buf, vb2);
 999
1000        saa7134_buffer_queue(dev, dmaq, buf);
1001}
1002EXPORT_SYMBOL_GPL(saa7134_vb2_buffer_queue);
1003
1004int saa7134_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
1005{
1006        struct saa7134_dmaqueue *dmaq = vq->drv_priv;
1007        struct saa7134_dev *dev = dmaq->dev;
1008
1009        /*
1010         * Planar video capture and TS share the same DMA channel,
1011         * so only one can be active at a time.
1012         */
1013        if (card_is_empress(dev) && vb2_is_busy(&dev->empress_vbq) &&
1014            dmaq == &dev->video_q && dev->fmt->planar) {
1015                struct saa7134_buf *buf, *tmp;
1016
1017                list_for_each_entry_safe(buf, tmp, &dmaq->queue, entry) {
1018                        list_del(&buf->entry);
1019                        vb2_buffer_done(&buf->vb2.vb2_buf,
1020                                        VB2_BUF_STATE_QUEUED);
1021                }
1022                if (dmaq->curr) {
1023                        vb2_buffer_done(&dmaq->curr->vb2.vb2_buf,
1024                                        VB2_BUF_STATE_QUEUED);
1025                        dmaq->curr = NULL;
1026                }
1027                return -EBUSY;
1028        }
1029
1030        /* The SAA7134 has a 1K FIFO; the datasheet suggests that when
1031         * configured conservatively, there's 22 usec of buffering for video.
1032         * We therefore request a DMA latency of 20 usec, giving us 2 usec of
1033         * margin in case the FIFO is configured differently to the datasheet.
1034         * Unfortunately, I lack register-level documentation to check the
1035         * Linux FIFO setup and confirm the perfect value.
1036         */
1037        if ((dmaq == &dev->video_q && !vb2_is_streaming(&dev->vbi_vbq)) ||
1038            (dmaq == &dev->vbi_q && !vb2_is_streaming(&dev->video_vbq)))
1039                pm_qos_add_request(&dev->qos_request,
1040                        PM_QOS_CPU_DMA_LATENCY, 20);
1041        dmaq->seq_nr = 0;
1042
1043        return 0;
1044}
1045
1046void saa7134_vb2_stop_streaming(struct vb2_queue *vq)
1047{
1048        struct saa7134_dmaqueue *dmaq = vq->drv_priv;
1049        struct saa7134_dev *dev = dmaq->dev;
1050
1051        saa7134_stop_streaming(dev, dmaq);
1052
1053        if ((dmaq == &dev->video_q && !vb2_is_streaming(&dev->vbi_vbq)) ||
1054            (dmaq == &dev->vbi_q && !vb2_is_streaming(&dev->video_vbq)))
1055                pm_qos_remove_request(&dev->qos_request);
1056}
1057
1058static struct vb2_ops vb2_qops = {
1059        .queue_setup    = queue_setup,
1060        .buf_init       = buffer_init,
1061        .buf_prepare    = buffer_prepare,
1062        .buf_queue      = saa7134_vb2_buffer_queue,
1063        .wait_prepare   = vb2_ops_wait_prepare,
1064        .wait_finish    = vb2_ops_wait_finish,
1065        .start_streaming = saa7134_vb2_start_streaming,
1066        .stop_streaming = saa7134_vb2_stop_streaming,
1067};
1068
1069/* ------------------------------------------------------------------ */
1070
1071static int saa7134_s_ctrl(struct v4l2_ctrl *ctrl)
1072{
1073        struct saa7134_dev *dev = container_of(ctrl->handler, struct saa7134_dev, ctrl_handler);
1074        unsigned long flags;
1075        int restart_overlay = 0;
1076
1077        switch (ctrl->id) {
1078        case V4L2_CID_BRIGHTNESS:
1079                dev->ctl_bright = ctrl->val;
1080                saa_writeb(SAA7134_DEC_LUMA_BRIGHT, ctrl->val);
1081                break;
1082        case V4L2_CID_HUE:
1083                dev->ctl_hue = ctrl->val;
1084                saa_writeb(SAA7134_DEC_CHROMA_HUE, ctrl->val);
1085                break;
1086        case V4L2_CID_CONTRAST:
1087                dev->ctl_contrast = ctrl->val;
1088                saa_writeb(SAA7134_DEC_LUMA_CONTRAST,
1089                           dev->ctl_invert ? -dev->ctl_contrast : dev->ctl_contrast);
1090                break;
1091        case V4L2_CID_SATURATION:
1092                dev->ctl_saturation = ctrl->val;
1093                saa_writeb(SAA7134_DEC_CHROMA_SATURATION,
1094                           dev->ctl_invert ? -dev->ctl_saturation : dev->ctl_saturation);
1095                break;
1096        case V4L2_CID_AUDIO_MUTE:
1097                dev->ctl_mute = ctrl->val;
1098                saa7134_tvaudio_setmute(dev);
1099                break;
1100        case V4L2_CID_AUDIO_VOLUME:
1101                dev->ctl_volume = ctrl->val;
1102                saa7134_tvaudio_setvolume(dev,dev->ctl_volume);
1103                break;
1104        case V4L2_CID_PRIVATE_INVERT:
1105                dev->ctl_invert = ctrl->val;
1106                saa_writeb(SAA7134_DEC_LUMA_CONTRAST,
1107                           dev->ctl_invert ? -dev->ctl_contrast : dev->ctl_contrast);
1108                saa_writeb(SAA7134_DEC_CHROMA_SATURATION,
1109                           dev->ctl_invert ? -dev->ctl_saturation : dev->ctl_saturation);
1110                break;
1111        case V4L2_CID_HFLIP:
1112                dev->ctl_mirror = ctrl->val;
1113                restart_overlay = 1;
1114                break;
1115        case V4L2_CID_PRIVATE_Y_EVEN:
1116                dev->ctl_y_even = ctrl->val;
1117                restart_overlay = 1;
1118                break;
1119        case V4L2_CID_PRIVATE_Y_ODD:
1120                dev->ctl_y_odd = ctrl->val;
1121                restart_overlay = 1;
1122                break;
1123        case V4L2_CID_PRIVATE_AUTOMUTE:
1124        {
1125                struct v4l2_priv_tun_config tda9887_cfg;
1126
1127                tda9887_cfg.tuner = TUNER_TDA9887;
1128                tda9887_cfg.priv = &dev->tda9887_conf;
1129
1130                dev->ctl_automute = ctrl->val;
1131                if (dev->tda9887_conf) {
1132                        if (dev->ctl_automute)
1133                                dev->tda9887_conf |= TDA9887_AUTOMUTE;
1134                        else
1135                                dev->tda9887_conf &= ~TDA9887_AUTOMUTE;
1136
1137                        saa_call_all(dev, tuner, s_config, &tda9887_cfg);
1138                }
1139                break;
1140        }
1141        default:
1142                return -EINVAL;
1143        }
1144        if (restart_overlay && dev->overlay_owner) {
1145                spin_lock_irqsave(&dev->slock, flags);
1146                stop_preview(dev);
1147                start_preview(dev);
1148                spin_unlock_irqrestore(&dev->slock, flags);
1149        }
1150        return 0;
1151}
1152
1153/* ------------------------------------------------------------------ */
1154
1155static int video_open(struct file *file)
1156{
1157        struct video_device *vdev = video_devdata(file);
1158        struct saa7134_dev *dev = video_drvdata(file);
1159        int ret = v4l2_fh_open(file);
1160
1161        if (ret < 0)
1162                return ret;
1163
1164        mutex_lock(&dev->lock);
1165        if (vdev->vfl_type == VFL_TYPE_RADIO) {
1166                /* switch to radio mode */
1167                saa7134_tvaudio_setinput(dev, &card(dev).radio);
1168                saa_call_all(dev, tuner, s_radio);
1169        } else {
1170                /* switch to video/vbi mode */
1171                video_mux(dev, dev->ctl_input);
1172        }
1173        mutex_unlock(&dev->lock);
1174
1175        return 0;
1176}
1177
1178static int video_release(struct file *file)
1179{
1180        struct video_device *vdev = video_devdata(file);
1181        struct saa7134_dev *dev = video_drvdata(file);
1182        struct v4l2_fh *fh = file->private_data;
1183        struct saa6588_command cmd;
1184        unsigned long flags;
1185
1186        mutex_lock(&dev->lock);
1187        saa7134_tvaudio_close(dev);
1188
1189        /* turn off overlay */
1190        if (fh == dev->overlay_owner) {
1191                spin_lock_irqsave(&dev->slock,flags);
1192                stop_preview(dev);
1193                spin_unlock_irqrestore(&dev->slock,flags);
1194                dev->overlay_owner = NULL;
1195        }
1196
1197        if (vdev->vfl_type == VFL_TYPE_RADIO)
1198                v4l2_fh_release(file);
1199        else
1200                _vb2_fop_release(file, NULL);
1201
1202        /* ts-capture will not work in planar mode, so turn it off Hac: 04.05*/
1203        saa_andorb(SAA7134_OFMT_VIDEO_A, 0x1f, 0);
1204        saa_andorb(SAA7134_OFMT_VIDEO_B, 0x1f, 0);
1205        saa_andorb(SAA7134_OFMT_DATA_A, 0x1f, 0);
1206        saa_andorb(SAA7134_OFMT_DATA_B, 0x1f, 0);
1207
1208        saa_call_all(dev, core, s_power, 0);
1209        if (vdev->vfl_type == VFL_TYPE_RADIO)
1210                saa_call_all(dev, core, ioctl, SAA6588_CMD_CLOSE, &cmd);
1211        mutex_unlock(&dev->lock);
1212
1213        return 0;
1214}
1215
1216static ssize_t radio_read(struct file *file, char __user *data,
1217                         size_t count, loff_t *ppos)
1218{
1219        struct saa7134_dev *dev = video_drvdata(file);
1220        struct saa6588_command cmd;
1221
1222        cmd.block_count = count/3;
1223        cmd.nonblocking = file->f_flags & O_NONBLOCK;
1224        cmd.buffer = data;
1225        cmd.instance = file;
1226        cmd.result = -ENODEV;
1227
1228        mutex_lock(&dev->lock);
1229        saa_call_all(dev, core, ioctl, SAA6588_CMD_READ, &cmd);
1230        mutex_unlock(&dev->lock);
1231
1232        return cmd.result;
1233}
1234
1235static unsigned int radio_poll(struct file *file, poll_table *wait)
1236{
1237        struct saa7134_dev *dev = video_drvdata(file);
1238        struct saa6588_command cmd;
1239        unsigned int rc = v4l2_ctrl_poll(file, wait);
1240
1241        cmd.instance = file;
1242        cmd.event_list = wait;
1243        cmd.result = 0;
1244        mutex_lock(&dev->lock);
1245        saa_call_all(dev, core, ioctl, SAA6588_CMD_POLL, &cmd);
1246        mutex_unlock(&dev->lock);
1247
1248        return rc | cmd.result;
1249}
1250
1251/* ------------------------------------------------------------------ */
1252
1253static int saa7134_try_get_set_fmt_vbi_cap(struct file *file, void *priv,
1254                                                struct v4l2_format *f)
1255{
1256        struct saa7134_dev *dev = video_drvdata(file);
1257        struct saa7134_tvnorm *norm = dev->tvnorm;
1258
1259        memset(&f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));
1260        f->fmt.vbi.sampling_rate = 6750000 * 4;
1261        f->fmt.vbi.samples_per_line = 2048 /* VBI_LINE_LENGTH */;
1262        f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1263        f->fmt.vbi.offset = 64 * 4;
1264        f->fmt.vbi.start[0] = norm->vbi_v_start_0;
1265        f->fmt.vbi.count[0] = norm->vbi_v_stop_0 - norm->vbi_v_start_0 +1;
1266        f->fmt.vbi.start[1] = norm->vbi_v_start_1;
1267        f->fmt.vbi.count[1] = f->fmt.vbi.count[0];
1268        f->fmt.vbi.flags = 0; /* VBI_UNSYNC VBI_INTERLACED */
1269
1270        return 0;
1271}
1272
1273static int saa7134_g_fmt_vid_cap(struct file *file, void *priv,
1274                                struct v4l2_format *f)
1275{
1276        struct saa7134_dev *dev = video_drvdata(file);
1277
1278        f->fmt.pix.width        = dev->width;
1279        f->fmt.pix.height       = dev->height;
1280        f->fmt.pix.field        = dev->field;
1281        f->fmt.pix.pixelformat  = dev->fmt->fourcc;
1282        if (dev->fmt->planar)
1283                f->fmt.pix.bytesperline = f->fmt.pix.width;
1284        else
1285                f->fmt.pix.bytesperline =
1286                        (f->fmt.pix.width * dev->fmt->depth) / 8;
1287        f->fmt.pix.sizeimage =
1288                (f->fmt.pix.height * f->fmt.pix.width * dev->fmt->depth) / 8;
1289        f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
1290        return 0;
1291}
1292
1293static int saa7134_g_fmt_vid_overlay(struct file *file, void *priv,
1294                                struct v4l2_format *f)
1295{
1296        struct saa7134_dev *dev = video_drvdata(file);
1297        struct v4l2_clip __user *clips = f->fmt.win.clips;
1298        u32 clipcount = f->fmt.win.clipcount;
1299        int err = 0;
1300        int i;
1301
1302        if (saa7134_no_overlay > 0) {
1303                pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1304                return -EINVAL;
1305        }
1306        f->fmt.win = dev->win;
1307        f->fmt.win.clips = clips;
1308        if (clips == NULL)
1309                clipcount = 0;
1310        if (dev->nclips < clipcount)
1311                clipcount = dev->nclips;
1312        f->fmt.win.clipcount = clipcount;
1313
1314        for (i = 0; !err && i < clipcount; i++) {
1315                if (copy_to_user(&f->fmt.win.clips[i].c, &dev->clips[i].c,
1316                                        sizeof(struct v4l2_rect)))
1317                        err = -EFAULT;
1318        }
1319
1320        return err;
1321}
1322
1323static int saa7134_try_fmt_vid_cap(struct file *file, void *priv,
1324                                                struct v4l2_format *f)
1325{
1326        struct saa7134_dev *dev = video_drvdata(file);
1327        struct saa7134_format *fmt;
1328        enum v4l2_field field;
1329        unsigned int maxw, maxh;
1330
1331        fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1332        if (NULL == fmt)
1333                return -EINVAL;
1334
1335        field = f->fmt.pix.field;
1336        maxw  = min(dev->crop_current.width*4,  dev->crop_bounds.width);
1337        maxh  = min(dev->crop_current.height*4, dev->crop_bounds.height);
1338
1339        if (V4L2_FIELD_ANY == field) {
1340                field = (f->fmt.pix.height > maxh/2)
1341                        ? V4L2_FIELD_INTERLACED
1342                        : V4L2_FIELD_BOTTOM;
1343        }
1344        switch (field) {
1345        case V4L2_FIELD_TOP:
1346        case V4L2_FIELD_BOTTOM:
1347                maxh = maxh / 2;
1348                break;
1349        default:
1350                field = V4L2_FIELD_INTERLACED;
1351                break;
1352        }
1353
1354        f->fmt.pix.field = field;
1355        if (f->fmt.pix.width  < 48)
1356                f->fmt.pix.width  = 48;
1357        if (f->fmt.pix.height < 32)
1358                f->fmt.pix.height = 32;
1359        if (f->fmt.pix.width > maxw)
1360                f->fmt.pix.width = maxw;
1361        if (f->fmt.pix.height > maxh)
1362                f->fmt.pix.height = maxh;
1363        f->fmt.pix.width &= ~0x03;
1364        if (fmt->planar)
1365                f->fmt.pix.bytesperline = f->fmt.pix.width;
1366        else
1367                f->fmt.pix.bytesperline =
1368                        (f->fmt.pix.width * fmt->depth) / 8;
1369        f->fmt.pix.sizeimage =
1370                (f->fmt.pix.height * f->fmt.pix.width * fmt->depth) / 8;
1371        f->fmt.pix.colorspace   = V4L2_COLORSPACE_SMPTE170M;
1372
1373        return 0;
1374}
1375
1376static int saa7134_try_fmt_vid_overlay(struct file *file, void *priv,
1377                                                struct v4l2_format *f)
1378{
1379        struct saa7134_dev *dev = video_drvdata(file);
1380
1381        if (saa7134_no_overlay > 0) {
1382                pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1383                return -EINVAL;
1384        }
1385
1386        if (f->fmt.win.clips == NULL)
1387                f->fmt.win.clipcount = 0;
1388        return verify_preview(dev, &f->fmt.win, true);
1389}
1390
1391static int saa7134_s_fmt_vid_cap(struct file *file, void *priv,
1392                                        struct v4l2_format *f)
1393{
1394        struct saa7134_dev *dev = video_drvdata(file);
1395        int err;
1396
1397        err = saa7134_try_fmt_vid_cap(file, priv, f);
1398        if (0 != err)
1399                return err;
1400
1401        dev->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1402        dev->width = f->fmt.pix.width;
1403        dev->height = f->fmt.pix.height;
1404        dev->field = f->fmt.pix.field;
1405        return 0;
1406}
1407
1408static int saa7134_s_fmt_vid_overlay(struct file *file, void *priv,
1409                                        struct v4l2_format *f)
1410{
1411        struct saa7134_dev *dev = video_drvdata(file);
1412        int err;
1413        unsigned long flags;
1414
1415        if (saa7134_no_overlay > 0) {
1416                pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1417                return -EINVAL;
1418        }
1419        if (f->fmt.win.clips == NULL)
1420                f->fmt.win.clipcount = 0;
1421        err = verify_preview(dev, &f->fmt.win, true);
1422        if (0 != err)
1423                return err;
1424
1425        dev->win    = f->fmt.win;
1426        dev->nclips = f->fmt.win.clipcount;
1427
1428        if (copy_from_user(dev->clips, f->fmt.win.clips,
1429                           sizeof(struct v4l2_clip) * dev->nclips))
1430                return -EFAULT;
1431
1432        if (priv == dev->overlay_owner) {
1433                spin_lock_irqsave(&dev->slock, flags);
1434                stop_preview(dev);
1435                start_preview(dev);
1436                spin_unlock_irqrestore(&dev->slock, flags);
1437        }
1438
1439        return 0;
1440}
1441
1442int saa7134_enum_input(struct file *file, void *priv, struct v4l2_input *i)
1443{
1444        struct saa7134_dev *dev = video_drvdata(file);
1445        unsigned int n;
1446
1447        n = i->index;
1448        if (n >= SAA7134_INPUT_MAX)
1449                return -EINVAL;
1450        if (card_in(dev, i->index).type == SAA7134_NO_INPUT)
1451                return -EINVAL;
1452        i->index = n;
1453        strcpy(i->name, saa7134_input_name[card_in(dev, n).type]);
1454        switch (card_in(dev, n).type) {
1455        case SAA7134_INPUT_TV:
1456        case SAA7134_INPUT_TV_MONO:
1457                i->type = V4L2_INPUT_TYPE_TUNER;
1458                break;
1459        default:
1460                i->type  = V4L2_INPUT_TYPE_CAMERA;
1461                break;
1462        }
1463        if (n == dev->ctl_input) {
1464                int v1 = saa_readb(SAA7134_STATUS_VIDEO1);
1465                int v2 = saa_readb(SAA7134_STATUS_VIDEO2);
1466
1467                if (0 != (v1 & 0x40))
1468                        i->status |= V4L2_IN_ST_NO_H_LOCK;
1469                if (0 != (v2 & 0x40))
1470                        i->status |= V4L2_IN_ST_NO_SIGNAL;
1471                if (0 != (v2 & 0x0e))
1472                        i->status |= V4L2_IN_ST_MACROVISION;
1473        }
1474        i->std = SAA7134_NORMS;
1475        return 0;
1476}
1477EXPORT_SYMBOL_GPL(saa7134_enum_input);
1478
1479int saa7134_g_input(struct file *file, void *priv, unsigned int *i)
1480{
1481        struct saa7134_dev *dev = video_drvdata(file);
1482
1483        *i = dev->ctl_input;
1484        return 0;
1485}
1486EXPORT_SYMBOL_GPL(saa7134_g_input);
1487
1488int saa7134_s_input(struct file *file, void *priv, unsigned int i)
1489{
1490        struct saa7134_dev *dev = video_drvdata(file);
1491
1492        if (i >= SAA7134_INPUT_MAX)
1493                return -EINVAL;
1494        if (card_in(dev, i).type == SAA7134_NO_INPUT)
1495                return -EINVAL;
1496        video_mux(dev, i);
1497        return 0;
1498}
1499EXPORT_SYMBOL_GPL(saa7134_s_input);
1500
1501int saa7134_querycap(struct file *file, void *priv,
1502                                        struct v4l2_capability *cap)
1503{
1504        struct saa7134_dev *dev = video_drvdata(file);
1505        struct video_device *vdev = video_devdata(file);
1506        u32 radio_caps, video_caps, vbi_caps;
1507
1508        unsigned int tuner_type = dev->tuner_type;
1509
1510        strcpy(cap->driver, "saa7134");
1511        strlcpy(cap->card, saa7134_boards[dev->board].name,
1512                sizeof(cap->card));
1513        sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
1514
1515        cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
1516        if ((tuner_type != TUNER_ABSENT) && (tuner_type != UNSET))
1517                cap->device_caps |= V4L2_CAP_TUNER;
1518
1519        radio_caps = V4L2_CAP_RADIO;
1520        if (dev->has_rds)
1521                radio_caps |= V4L2_CAP_RDS_CAPTURE;
1522
1523        video_caps = V4L2_CAP_VIDEO_CAPTURE;
1524        if (saa7134_no_overlay <= 0 && !is_empress(file))
1525                video_caps |= V4L2_CAP_VIDEO_OVERLAY;
1526
1527        vbi_caps = V4L2_CAP_VBI_CAPTURE;
1528
1529        switch (vdev->vfl_type) {
1530        case VFL_TYPE_RADIO:
1531                cap->device_caps |= radio_caps;
1532                break;
1533        case VFL_TYPE_GRABBER:
1534                cap->device_caps |= video_caps;
1535                break;
1536        case VFL_TYPE_VBI:
1537                cap->device_caps |= vbi_caps;
1538                break;
1539        }
1540        cap->capabilities = radio_caps | video_caps | vbi_caps |
1541                cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1542        if (vdev->vfl_type == VFL_TYPE_RADIO) {
1543                cap->device_caps &= ~V4L2_CAP_STREAMING;
1544                if (!dev->has_rds)
1545                        cap->device_caps &= ~V4L2_CAP_READWRITE;
1546        }
1547
1548        return 0;
1549}
1550EXPORT_SYMBOL_GPL(saa7134_querycap);
1551
1552int saa7134_s_std(struct file *file, void *priv, v4l2_std_id id)
1553{
1554        struct saa7134_dev *dev = video_drvdata(file);
1555        struct v4l2_fh *fh = priv;
1556        unsigned long flags;
1557        unsigned int i;
1558        v4l2_std_id fixup;
1559
1560        if (is_empress(file) && dev->overlay_owner) {
1561                /* Don't change the std from the mpeg device
1562                   if overlay is active. */
1563                return -EBUSY;
1564        }
1565
1566        for (i = 0; i < TVNORMS; i++)
1567                if (id == tvnorms[i].id)
1568                        break;
1569
1570        if (i == TVNORMS)
1571                for (i = 0; i < TVNORMS; i++)
1572                        if (id & tvnorms[i].id)
1573                                break;
1574        if (i == TVNORMS)
1575                return -EINVAL;
1576
1577        if ((id & V4L2_STD_SECAM) && (secam[0] != '-')) {
1578                if (secam[0] == 'L' || secam[0] == 'l') {
1579                        if (secam[1] == 'C' || secam[1] == 'c')
1580                                fixup = V4L2_STD_SECAM_LC;
1581                        else
1582                                fixup = V4L2_STD_SECAM_L;
1583                } else {
1584                        if (secam[0] == 'D' || secam[0] == 'd')
1585                                fixup = V4L2_STD_SECAM_DK;
1586                        else
1587                                fixup = V4L2_STD_SECAM;
1588                }
1589                for (i = 0; i < TVNORMS; i++) {
1590                        if (fixup == tvnorms[i].id)
1591                                break;
1592                }
1593                if (i == TVNORMS)
1594                        return -EINVAL;
1595        }
1596
1597        id = tvnorms[i].id;
1598
1599        if (!is_empress(file) && fh == dev->overlay_owner) {
1600                spin_lock_irqsave(&dev->slock, flags);
1601                stop_preview(dev);
1602                spin_unlock_irqrestore(&dev->slock, flags);
1603
1604                set_tvnorm(dev, &tvnorms[i]);
1605
1606                spin_lock_irqsave(&dev->slock, flags);
1607                start_preview(dev);
1608                spin_unlock_irqrestore(&dev->slock, flags);
1609        } else
1610                set_tvnorm(dev, &tvnorms[i]);
1611
1612        saa7134_tvaudio_do_scan(dev);
1613        return 0;
1614}
1615EXPORT_SYMBOL_GPL(saa7134_s_std);
1616
1617int saa7134_g_std(struct file *file, void *priv, v4l2_std_id *id)
1618{
1619        struct saa7134_dev *dev = video_drvdata(file);
1620
1621        *id = dev->tvnorm->id;
1622        return 0;
1623}
1624EXPORT_SYMBOL_GPL(saa7134_g_std);
1625
1626static v4l2_std_id saa7134_read_std(struct saa7134_dev *dev)
1627{
1628        static v4l2_std_id stds[] = {
1629                V4L2_STD_UNKNOWN,
1630                V4L2_STD_NTSC,
1631                V4L2_STD_PAL,
1632                V4L2_STD_SECAM };
1633
1634        v4l2_std_id result = 0;
1635
1636        u8 st1 = saa_readb(SAA7134_STATUS_VIDEO1);
1637        u8 st2 = saa_readb(SAA7134_STATUS_VIDEO2);
1638
1639        if (!(st2 & 0x1)) /* RDCAP == 0 */
1640                result = V4L2_STD_UNKNOWN;
1641        else
1642                result = stds[st1 & 0x03];
1643
1644        return result;
1645}
1646
1647int saa7134_querystd(struct file *file, void *priv, v4l2_std_id *std)
1648{
1649        struct saa7134_dev *dev = video_drvdata(file);
1650        *std &= saa7134_read_std(dev);
1651        return 0;
1652}
1653EXPORT_SYMBOL_GPL(saa7134_querystd);
1654
1655static int saa7134_cropcap(struct file *file, void *priv,
1656                                        struct v4l2_cropcap *cap)
1657{
1658        struct saa7134_dev *dev = video_drvdata(file);
1659
1660        if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1661            cap->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
1662                return -EINVAL;
1663        cap->bounds  = dev->crop_bounds;
1664        cap->defrect = dev->crop_defrect;
1665        cap->pixelaspect.numerator   = 1;
1666        cap->pixelaspect.denominator = 1;
1667        if (dev->tvnorm->id & V4L2_STD_525_60) {
1668                cap->pixelaspect.numerator   = 11;
1669                cap->pixelaspect.denominator = 10;
1670        }
1671        if (dev->tvnorm->id & V4L2_STD_625_50) {
1672                cap->pixelaspect.numerator   = 54;
1673                cap->pixelaspect.denominator = 59;
1674        }
1675        return 0;
1676}
1677
1678static int saa7134_g_crop(struct file *file, void *f, struct v4l2_crop *crop)
1679{
1680        struct saa7134_dev *dev = video_drvdata(file);
1681
1682        if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1683            crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
1684                return -EINVAL;
1685        crop->c = dev->crop_current;
1686        return 0;
1687}
1688
1689static int saa7134_s_crop(struct file *file, void *f, const struct v4l2_crop *crop)
1690{
1691        struct saa7134_dev *dev = video_drvdata(file);
1692        struct v4l2_rect *b = &dev->crop_bounds;
1693        struct v4l2_rect *c = &dev->crop_current;
1694
1695        if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1696            crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
1697                return -EINVAL;
1698
1699        if (dev->overlay_owner)
1700                return -EBUSY;
1701        if (vb2_is_streaming(&dev->video_vbq))
1702                return -EBUSY;
1703
1704        *c = crop->c;
1705        if (c->top < b->top)
1706                c->top = b->top;
1707        if (c->top > b->top + b->height)
1708                c->top = b->top + b->height;
1709        if (c->height > b->top - c->top + b->height)
1710                c->height = b->top - c->top + b->height;
1711
1712        if (c->left < b->left)
1713                c->left = b->left;
1714        if (c->left > b->left + b->width)
1715                c->left = b->left + b->width;
1716        if (c->width > b->left - c->left + b->width)
1717                c->width = b->left - c->left + b->width;
1718        return 0;
1719}
1720
1721int saa7134_g_tuner(struct file *file, void *priv,
1722                                        struct v4l2_tuner *t)
1723{
1724        struct saa7134_dev *dev = video_drvdata(file);
1725        int n;
1726
1727        if (0 != t->index)
1728                return -EINVAL;
1729        memset(t, 0, sizeof(*t));
1730        for (n = 0; n < SAA7134_INPUT_MAX; n++) {
1731                if (card_in(dev, n).type == SAA7134_INPUT_TV ||
1732                    card_in(dev, n).type == SAA7134_INPUT_TV_MONO)
1733                        break;
1734        }
1735        if (n == SAA7134_INPUT_MAX)
1736                return -EINVAL;
1737        if (card_in(dev, n).type != SAA7134_NO_INPUT) {
1738                strcpy(t->name, "Television");
1739                t->type = V4L2_TUNER_ANALOG_TV;
1740                saa_call_all(dev, tuner, g_tuner, t);
1741                t->capability = V4L2_TUNER_CAP_NORM |
1742                        V4L2_TUNER_CAP_STEREO |
1743                        V4L2_TUNER_CAP_LANG1 |
1744                        V4L2_TUNER_CAP_LANG2;
1745                t->rxsubchans = saa7134_tvaudio_getstereo(dev);
1746                t->audmode = saa7134_tvaudio_rx2mode(t->rxsubchans);
1747        }
1748        if (0 != (saa_readb(SAA7134_STATUS_VIDEO1) & 0x03))
1749                t->signal = 0xffff;
1750        return 0;
1751}
1752EXPORT_SYMBOL_GPL(saa7134_g_tuner);
1753
1754int saa7134_s_tuner(struct file *file, void *priv,
1755                                        const struct v4l2_tuner *t)
1756{
1757        struct saa7134_dev *dev = video_drvdata(file);
1758        int rx, mode;
1759
1760        if (0 != t->index)
1761                return -EINVAL;
1762
1763        mode = dev->thread.mode;
1764        if (UNSET == mode) {
1765                rx   = saa7134_tvaudio_getstereo(dev);
1766                mode = saa7134_tvaudio_rx2mode(rx);
1767        }
1768        if (mode != t->audmode)
1769                dev->thread.mode = t->audmode;
1770
1771        return 0;
1772}
1773EXPORT_SYMBOL_GPL(saa7134_s_tuner);
1774
1775int saa7134_g_frequency(struct file *file, void *priv,
1776                                        struct v4l2_frequency *f)
1777{
1778        struct saa7134_dev *dev = video_drvdata(file);
1779
1780        if (0 != f->tuner)
1781                return -EINVAL;
1782
1783        saa_call_all(dev, tuner, g_frequency, f);
1784
1785        return 0;
1786}
1787EXPORT_SYMBOL_GPL(saa7134_g_frequency);
1788
1789int saa7134_s_frequency(struct file *file, void *priv,
1790                                        const struct v4l2_frequency *f)
1791{
1792        struct saa7134_dev *dev = video_drvdata(file);
1793
1794        if (0 != f->tuner)
1795                return -EINVAL;
1796
1797        saa_call_all(dev, tuner, s_frequency, f);
1798
1799        saa7134_tvaudio_do_scan(dev);
1800        return 0;
1801}
1802EXPORT_SYMBOL_GPL(saa7134_s_frequency);
1803
1804static int saa7134_enum_fmt_vid_cap(struct file *file, void  *priv,
1805                                        struct v4l2_fmtdesc *f)
1806{
1807        if (f->index >= FORMATS)
1808                return -EINVAL;
1809
1810        strlcpy(f->description, formats[f->index].name,
1811                sizeof(f->description));
1812
1813        f->pixelformat = formats[f->index].fourcc;
1814
1815        return 0;
1816}
1817
1818static int saa7134_enum_fmt_vid_overlay(struct file *file, void  *priv,
1819                                        struct v4l2_fmtdesc *f)
1820{
1821        if (saa7134_no_overlay > 0) {
1822                pr_err("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
1823                return -EINVAL;
1824        }
1825
1826        if ((f->index >= FORMATS) || formats[f->index].planar)
1827                return -EINVAL;
1828
1829        strlcpy(f->description, formats[f->index].name,
1830                sizeof(f->description));
1831
1832        f->pixelformat = formats[f->index].fourcc;
1833
1834        return 0;
1835}
1836
1837static int saa7134_g_fbuf(struct file *file, void *f,
1838                                struct v4l2_framebuffer *fb)
1839{
1840        struct saa7134_dev *dev = video_drvdata(file);
1841
1842        *fb = dev->ovbuf;
1843        fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
1844
1845        return 0;
1846}
1847
1848static int saa7134_s_fbuf(struct file *file, void *f,
1849                                        const struct v4l2_framebuffer *fb)
1850{
1851        struct saa7134_dev *dev = video_drvdata(file);
1852        struct saa7134_format *fmt;
1853
1854        if (!capable(CAP_SYS_ADMIN) &&
1855           !capable(CAP_SYS_RAWIO))
1856                return -EPERM;
1857
1858        /* check args */
1859        fmt = format_by_fourcc(fb->fmt.pixelformat);
1860        if (NULL == fmt)
1861                return -EINVAL;
1862
1863        /* ok, accept it */
1864        dev->ovbuf = *fb;
1865        dev->ovfmt = fmt;
1866        if (0 == dev->ovbuf.fmt.bytesperline)
1867                dev->ovbuf.fmt.bytesperline =
1868                        dev->ovbuf.fmt.width*fmt->depth/8;
1869        return 0;
1870}
1871
1872static int saa7134_overlay(struct file *file, void *priv, unsigned int on)
1873{
1874        struct saa7134_dev *dev = video_drvdata(file);
1875        unsigned long flags;
1876
1877        if (on) {
1878                if (saa7134_no_overlay > 0) {
1879                        video_dbg("no_overlay\n");
1880                        return -EINVAL;
1881                }
1882
1883                if (dev->overlay_owner && priv != dev->overlay_owner)
1884                        return -EBUSY;
1885                dev->overlay_owner = priv;
1886                spin_lock_irqsave(&dev->slock, flags);
1887                start_preview(dev);
1888                spin_unlock_irqrestore(&dev->slock, flags);
1889        }
1890        if (!on) {
1891                if (priv != dev->overlay_owner)
1892                        return -EINVAL;
1893                spin_lock_irqsave(&dev->slock, flags);
1894                stop_preview(dev);
1895                spin_unlock_irqrestore(&dev->slock, flags);
1896                dev->overlay_owner = NULL;
1897        }
1898        return 0;
1899}
1900
1901#ifdef CONFIG_VIDEO_ADV_DEBUG
1902static int vidioc_g_register (struct file *file, void *priv,
1903                              struct v4l2_dbg_register *reg)
1904{
1905        struct saa7134_dev *dev = video_drvdata(file);
1906
1907        reg->val = saa_readb(reg->reg & 0xffffff);
1908        reg->size = 1;
1909        return 0;
1910}
1911
1912static int vidioc_s_register (struct file *file, void *priv,
1913                                const struct v4l2_dbg_register *reg)
1914{
1915        struct saa7134_dev *dev = video_drvdata(file);
1916
1917        saa_writeb(reg->reg & 0xffffff, reg->val);
1918        return 0;
1919}
1920#endif
1921
1922static int radio_g_tuner(struct file *file, void *priv,
1923                                        struct v4l2_tuner *t)
1924{
1925        struct saa7134_dev *dev = video_drvdata(file);
1926
1927        if (0 != t->index)
1928                return -EINVAL;
1929
1930        strcpy(t->name, "Radio");
1931
1932        saa_call_all(dev, tuner, g_tuner, t);
1933        t->audmode &= V4L2_TUNER_MODE_MONO | V4L2_TUNER_MODE_STEREO;
1934        if (dev->input->amux == TV) {
1935                t->signal = 0xf800 - ((saa_readb(0x581) & 0x1f) << 11);
1936                t->rxsubchans = (saa_readb(0x529) & 0x08) ?
1937                                V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
1938        }
1939        return 0;
1940}
1941static int radio_s_tuner(struct file *file, void *priv,
1942                                        const struct v4l2_tuner *t)
1943{
1944        struct saa7134_dev *dev = video_drvdata(file);
1945
1946        if (0 != t->index)
1947                return -EINVAL;
1948
1949        saa_call_all(dev, tuner, s_tuner, t);
1950        return 0;
1951}
1952
1953static const struct v4l2_file_operations video_fops =
1954{
1955        .owner    = THIS_MODULE,
1956        .open     = video_open,
1957        .release  = video_release,
1958        .read     = vb2_fop_read,
1959        .poll     = vb2_fop_poll,
1960        .mmap     = vb2_fop_mmap,
1961        .unlocked_ioctl   = video_ioctl2,
1962};
1963
1964static const struct v4l2_ioctl_ops video_ioctl_ops = {
1965        .vidioc_querycap                = saa7134_querycap,
1966        .vidioc_enum_fmt_vid_cap        = saa7134_enum_fmt_vid_cap,
1967        .vidioc_g_fmt_vid_cap           = saa7134_g_fmt_vid_cap,
1968        .vidioc_try_fmt_vid_cap         = saa7134_try_fmt_vid_cap,
1969        .vidioc_s_fmt_vid_cap           = saa7134_s_fmt_vid_cap,
1970        .vidioc_enum_fmt_vid_overlay    = saa7134_enum_fmt_vid_overlay,
1971        .vidioc_g_fmt_vid_overlay       = saa7134_g_fmt_vid_overlay,
1972        .vidioc_try_fmt_vid_overlay     = saa7134_try_fmt_vid_overlay,
1973        .vidioc_s_fmt_vid_overlay       = saa7134_s_fmt_vid_overlay,
1974        .vidioc_g_fmt_vbi_cap           = saa7134_try_get_set_fmt_vbi_cap,
1975        .vidioc_try_fmt_vbi_cap         = saa7134_try_get_set_fmt_vbi_cap,
1976        .vidioc_s_fmt_vbi_cap           = saa7134_try_get_set_fmt_vbi_cap,
1977        .vidioc_cropcap                 = saa7134_cropcap,
1978        .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1979        .vidioc_querybuf                = vb2_ioctl_querybuf,
1980        .vidioc_qbuf                    = vb2_ioctl_qbuf,
1981        .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1982        .vidioc_expbuf                  = vb2_ioctl_expbuf,
1983        .vidioc_s_std                   = saa7134_s_std,
1984        .vidioc_g_std                   = saa7134_g_std,
1985        .vidioc_querystd                = saa7134_querystd,
1986        .vidioc_enum_input              = saa7134_enum_input,
1987        .vidioc_g_input                 = saa7134_g_input,
1988        .vidioc_s_input                 = saa7134_s_input,
1989        .vidioc_streamon                = vb2_ioctl_streamon,
1990        .vidioc_streamoff               = vb2_ioctl_streamoff,
1991        .vidioc_g_tuner                 = saa7134_g_tuner,
1992        .vidioc_s_tuner                 = saa7134_s_tuner,
1993        .vidioc_g_crop                  = saa7134_g_crop,
1994        .vidioc_s_crop                  = saa7134_s_crop,
1995        .vidioc_g_fbuf                  = saa7134_g_fbuf,
1996        .vidioc_s_fbuf                  = saa7134_s_fbuf,
1997        .vidioc_overlay                 = saa7134_overlay,
1998        .vidioc_g_frequency             = saa7134_g_frequency,
1999        .vidioc_s_frequency             = saa7134_s_frequency,
2000#ifdef CONFIG_VIDEO_ADV_DEBUG
2001        .vidioc_g_register              = vidioc_g_register,
2002        .vidioc_s_register              = vidioc_s_register,
2003#endif
2004        .vidioc_log_status              = v4l2_ctrl_log_status,
2005        .vidioc_subscribe_event         = v4l2_ctrl_subscribe_event,
2006        .vidioc_unsubscribe_event       = v4l2_event_unsubscribe,
2007};
2008
2009static const struct v4l2_file_operations radio_fops = {
2010        .owner    = THIS_MODULE,
2011        .open     = video_open,
2012        .read     = radio_read,
2013        .release  = video_release,
2014        .unlocked_ioctl = video_ioctl2,
2015        .poll     = radio_poll,
2016};
2017
2018static const struct v4l2_ioctl_ops radio_ioctl_ops = {
2019        .vidioc_querycap        = saa7134_querycap,
2020        .vidioc_g_tuner         = radio_g_tuner,
2021        .vidioc_s_tuner         = radio_s_tuner,
2022        .vidioc_g_frequency     = saa7134_g_frequency,
2023        .vidioc_s_frequency     = saa7134_s_frequency,
2024        .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
2025        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
2026};
2027
2028/* ----------------------------------------------------------- */
2029/* exported stuff                                              */
2030
2031struct video_device saa7134_video_template = {
2032        .name                           = "saa7134-video",
2033        .fops                           = &video_fops,
2034        .ioctl_ops                      = &video_ioctl_ops,
2035        .tvnorms                        = SAA7134_NORMS,
2036};
2037
2038struct video_device saa7134_radio_template = {
2039        .name                   = "saa7134-radio",
2040        .fops                   = &radio_fops,
2041        .ioctl_ops              = &radio_ioctl_ops,
2042};
2043
2044static const struct v4l2_ctrl_ops saa7134_ctrl_ops = {
2045        .s_ctrl = saa7134_s_ctrl,
2046};
2047
2048static const struct v4l2_ctrl_config saa7134_ctrl_invert = {
2049        .ops = &saa7134_ctrl_ops,
2050        .id = V4L2_CID_PRIVATE_INVERT,
2051        .name = "Invert",
2052        .type = V4L2_CTRL_TYPE_BOOLEAN,
2053        .min = 0,
2054        .max = 1,
2055        .step = 1,
2056};
2057
2058static const struct v4l2_ctrl_config saa7134_ctrl_y_odd = {
2059        .ops = &saa7134_ctrl_ops,
2060        .id = V4L2_CID_PRIVATE_Y_ODD,
2061        .name = "Y Offset Odd Field",
2062        .type = V4L2_CTRL_TYPE_INTEGER,
2063        .min = 0,
2064        .max = 128,
2065        .step = 1,
2066};
2067
2068static const struct v4l2_ctrl_config saa7134_ctrl_y_even = {
2069        .ops = &saa7134_ctrl_ops,
2070        .id = V4L2_CID_PRIVATE_Y_EVEN,
2071        .name = "Y Offset Even Field",
2072        .type = V4L2_CTRL_TYPE_INTEGER,
2073        .min = 0,
2074        .max = 128,
2075        .step = 1,
2076};
2077
2078static const struct v4l2_ctrl_config saa7134_ctrl_automute = {
2079        .ops = &saa7134_ctrl_ops,
2080        .id = V4L2_CID_PRIVATE_AUTOMUTE,
2081        .name = "Automute",
2082        .type = V4L2_CTRL_TYPE_BOOLEAN,
2083        .min = 0,
2084        .max = 1,
2085        .step = 1,
2086        .def = 1,
2087};
2088
2089int saa7134_video_init1(struct saa7134_dev *dev)
2090{
2091        struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
2092        struct vb2_queue *q;
2093        int ret;
2094
2095        /* sanitycheck insmod options */
2096        if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
2097                gbuffers = 2;
2098        if (gbufsize > gbufsize_max)
2099                gbufsize = gbufsize_max;
2100        gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
2101
2102        v4l2_ctrl_handler_init(hdl, 11);
2103        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2104                        V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
2105        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2106                        V4L2_CID_CONTRAST, 0, 127, 1, 68);
2107        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2108                        V4L2_CID_SATURATION, 0, 127, 1, 64);
2109        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2110                        V4L2_CID_HUE, -128, 127, 1, 0);
2111        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2112                        V4L2_CID_HFLIP, 0, 1, 1, 0);
2113        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2114                        V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
2115        v4l2_ctrl_new_std(hdl, &saa7134_ctrl_ops,
2116                        V4L2_CID_AUDIO_VOLUME, -15, 15, 1, 0);
2117        v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_invert, NULL);
2118        v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_y_odd, NULL);
2119        v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_y_even, NULL);
2120        v4l2_ctrl_new_custom(hdl, &saa7134_ctrl_automute, NULL);
2121        if (hdl->error)
2122                return hdl->error;
2123        if (card_has_radio(dev)) {
2124                hdl = &dev->radio_ctrl_handler;
2125                v4l2_ctrl_handler_init(hdl, 2);
2126                v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler,
2127                                v4l2_ctrl_radio_filter);
2128                if (hdl->error)
2129                        return hdl->error;
2130        }
2131        dev->ctl_mute       = 1;
2132
2133        if (dev->tda9887_conf && saa7134_ctrl_automute.def)
2134                dev->tda9887_conf |= TDA9887_AUTOMUTE;
2135        dev->automute       = 0;
2136
2137        INIT_LIST_HEAD(&dev->video_q.queue);
2138        init_timer(&dev->video_q.timeout);
2139        dev->video_q.timeout.function = saa7134_buffer_timeout;
2140        dev->video_q.timeout.data     = (unsigned long)(&dev->video_q);
2141        dev->video_q.dev              = dev;
2142        dev->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
2143        dev->width    = 720;
2144        dev->height   = 576;
2145        dev->field = V4L2_FIELD_INTERLACED;
2146        dev->win.w.width = dev->width;
2147        dev->win.w.height = dev->height;
2148        dev->win.field = V4L2_FIELD_INTERLACED;
2149        dev->ovbuf.fmt.width = dev->width;
2150        dev->ovbuf.fmt.height = dev->height;
2151        dev->ovbuf.fmt.pixelformat = dev->fmt->fourcc;
2152        dev->ovbuf.fmt.colorspace = V4L2_COLORSPACE_SMPTE170M;
2153
2154        if (saa7134_boards[dev->board].video_out)
2155                saa7134_videoport_init(dev);
2156
2157        q = &dev->video_vbq;
2158        q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2159        /*
2160         * Do not add VB2_USERPTR unless explicitly requested: the saa7134 DMA
2161         * engine cannot handle transfers that do not start at the beginning
2162         * of a page. A user-provided pointer can start anywhere in a page, so
2163         * USERPTR support is a no-go unless the application knows about these
2164         * limitations and has special support for this.
2165         */
2166        q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
2167        if (saa7134_userptr)
2168                q->io_modes |= VB2_USERPTR;
2169        q->drv_priv = &dev->video_q;
2170        q->ops = &vb2_qops;
2171        q->gfp_flags = GFP_DMA32;
2172        q->mem_ops = &vb2_dma_sg_memops;
2173        q->buf_struct_size = sizeof(struct saa7134_buf);
2174        q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
2175        q->lock = &dev->lock;
2176        ret = vb2_queue_init(q);
2177        if (ret)
2178                return ret;
2179        saa7134_pgtable_alloc(dev->pci, &dev->video_q.pt);
2180
2181        q = &dev->vbi_vbq;
2182        q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
2183        /* Don't add VB2_USERPTR, see comment above */
2184        q->io_modes = VB2_MMAP | VB2_READ;
2185        if (saa7134_userptr)
2186                q->io_modes |= VB2_USERPTR;
2187        q->drv_priv = &dev->vbi_q;
2188        q->ops = &saa7134_vbi_qops;
2189        q->gfp_flags = GFP_DMA32;
2190        q->mem_ops = &vb2_dma_sg_memops;
2191        q->buf_struct_size = sizeof(struct saa7134_buf);
2192        q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
2193        q->lock = &dev->lock;
2194        ret = vb2_queue_init(q);
2195        if (ret)
2196                return ret;
2197        saa7134_pgtable_alloc(dev->pci, &dev->vbi_q.pt);
2198
2199        return 0;
2200}
2201
2202void saa7134_video_fini(struct saa7134_dev *dev)
2203{
2204        /* free stuff */
2205        vb2_queue_release(&dev->video_vbq);
2206        saa7134_pgtable_free(dev->pci, &dev->video_q.pt);
2207        vb2_queue_release(&dev->vbi_vbq);
2208        saa7134_pgtable_free(dev->pci, &dev->vbi_q.pt);
2209        v4l2_ctrl_handler_free(&dev->ctrl_handler);
2210        if (card_has_radio(dev))
2211                v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
2212}
2213
2214int saa7134_videoport_init(struct saa7134_dev *dev)
2215{
2216        /* enable video output */
2217        int vo = saa7134_boards[dev->board].video_out;
2218        int video_reg;
2219        unsigned int vid_port_opts = saa7134_boards[dev->board].vid_port_opts;
2220
2221        /* Configure videoport */
2222        saa_writeb(SAA7134_VIDEO_PORT_CTRL0, video_out[vo][0]);
2223        video_reg = video_out[vo][1];
2224        if (vid_port_opts & SET_T_CODE_POLARITY_NON_INVERTED)
2225                video_reg &= ~VP_T_CODE_P_INVERTED;
2226        saa_writeb(SAA7134_VIDEO_PORT_CTRL1, video_reg);
2227        saa_writeb(SAA7134_VIDEO_PORT_CTRL2, video_out[vo][2]);
2228        saa_writeb(SAA7134_VIDEO_PORT_CTRL4, video_out[vo][4]);
2229        video_reg = video_out[vo][5];
2230        if (vid_port_opts & SET_CLOCK_NOT_DELAYED)
2231                video_reg &= ~VP_CLK_CTRL2_DELAYED;
2232        if (vid_port_opts & SET_CLOCK_INVERTED)
2233                video_reg |= VP_CLK_CTRL1_INVERTED;
2234        saa_writeb(SAA7134_VIDEO_PORT_CTRL5, video_reg);
2235        video_reg = video_out[vo][6];
2236        if (vid_port_opts & SET_VSYNC_OFF) {
2237                video_reg &= ~VP_VS_TYPE_MASK;
2238                video_reg |= VP_VS_TYPE_OFF;
2239        }
2240        saa_writeb(SAA7134_VIDEO_PORT_CTRL6, video_reg);
2241        saa_writeb(SAA7134_VIDEO_PORT_CTRL7, video_out[vo][7]);
2242        saa_writeb(SAA7134_VIDEO_PORT_CTRL8, video_out[vo][8]);
2243
2244        /* Start videoport */
2245        saa_writeb(SAA7134_VIDEO_PORT_CTRL3, video_out[vo][3]);
2246
2247        return 0;
2248}
2249
2250int saa7134_video_init2(struct saa7134_dev *dev)
2251{
2252        /* init video hw */
2253        set_tvnorm(dev,&tvnorms[0]);
2254        video_mux(dev,0);
2255        v4l2_ctrl_handler_setup(&dev->ctrl_handler);
2256        saa7134_tvaudio_setmute(dev);
2257        saa7134_tvaudio_setvolume(dev,dev->ctl_volume);
2258        return 0;
2259}
2260
2261void saa7134_irq_video_signalchange(struct saa7134_dev *dev)
2262{
2263        static const char *st[] = {
2264                "(no signal)", "NTSC", "PAL", "SECAM" };
2265        u32 st1,st2;
2266
2267        st1 = saa_readb(SAA7134_STATUS_VIDEO1);
2268        st2 = saa_readb(SAA7134_STATUS_VIDEO2);
2269        video_dbg("DCSDT: pll: %s, sync: %s, norm: %s\n",
2270                (st1 & 0x40) ? "not locked" : "locked",
2271                (st2 & 0x40) ? "no"         : "yes",
2272                st[st1 & 0x03]);
2273        dev->nosignal = (st1 & 0x40) || (st2 & 0x40)  || !(st2 & 0x1);
2274
2275        if (dev->nosignal) {
2276                /* no video signal -> mute audio */
2277                if (dev->ctl_automute)
2278                        dev->automute = 1;
2279                saa7134_tvaudio_setmute(dev);
2280        } else {
2281                /* wake up tvaudio audio carrier scan thread */
2282                saa7134_tvaudio_do_scan(dev);
2283        }
2284
2285        if ((st2 & 0x80) && !noninterlaced && !dev->nosignal)
2286                saa_clearb(SAA7134_SYNC_CTRL, 0x20);
2287        else
2288                saa_setb(SAA7134_SYNC_CTRL, 0x20);
2289
2290        if (dev->mops && dev->mops->signal_change)
2291                dev->mops->signal_change(dev);
2292}
2293
2294
2295void saa7134_irq_video_done(struct saa7134_dev *dev, unsigned long status)
2296{
2297        enum v4l2_field field;
2298
2299        spin_lock(&dev->slock);
2300        if (dev->video_q.curr) {
2301                field = dev->field;
2302                if (V4L2_FIELD_HAS_BOTH(field)) {
2303                        /* make sure we have seen both fields */
2304                        if ((status & 0x10) == 0x00) {
2305                                dev->video_q.curr->top_seen = 1;
2306                                goto done;
2307                        }
2308                        if (!dev->video_q.curr->top_seen)
2309                                goto done;
2310                } else if (field == V4L2_FIELD_TOP) {
2311                        if ((status & 0x10) != 0x10)
2312                                goto done;
2313                } else if (field == V4L2_FIELD_BOTTOM) {
2314                        if ((status & 0x10) != 0x00)
2315                                goto done;
2316                }
2317                saa7134_buffer_finish(dev, &dev->video_q, VB2_BUF_STATE_DONE);
2318        }
2319        saa7134_buffer_next(dev, &dev->video_q);
2320
2321 done:
2322        spin_unlock(&dev->slock);
2323}
2324