drivers/media/video/saa7134/saa6752hs.c

   1 #include <linux/module.h>
   2 #include <linux/kernel.h>
   3 #include <linux/sched.h>
   4 #include <linux/string.h>
   5 #include <linux/timer.h>
   6 #include <linux/delay.h>
   7 #include <linux/errno.h>
   8 #include <linux/slab.h>
   9 #include <linux/poll.h>
  10 #include <linux/i2c.h>
  11 #include <linux/types.h>
  12 #include <linux/videodev2.h>
  13 #include <media/v4l2-common.h>
  14 #include <linux/init.h>
  15 #include <linux/crc32.h>
  16
  17
  18 #define MPEG_VIDEO_TARGET_BITRATE_MAX  27000
  19 #define MPEG_VIDEO_MAX_BITRATE_MAX     27000
  20 #define MPEG_TOTAL_TARGET_BITRATE_MAX  27000
  21 #define MPEG_PID_MAX ((1 << 14) - 1)
  22
  23 /* Addresses to scan */
  24 static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
  25 I2C_CLIENT_INSMOD;
  26
  27 MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
  28 MODULE_AUTHOR("Andrew de Quincey");
  29 MODULE_LICENSE("GPL");
  30
  31 static struct i2c_driver driver;
  32 static struct i2c_client client_template;
  33
  34 enum saa6752hs_videoformat {
  35         SAA6752HS_VF_D1 = 0,    /* standard D1 video format: 720x576 */
  36         SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
  37         SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
  38         SAA6752HS_VF_SIF = 3,   /* SIF video format: 352x288 */
  39         SAA6752HS_VF_UNKNOWN,
  40 };
  41
  42 struct saa6752hs_mpeg_params {
  43         /* transport streams */
  44         __u16                           ts_pid_pmt;
  45         __u16                           ts_pid_audio;
  46         __u16                           ts_pid_video;
  47         __u16                           ts_pid_pcr;
  48
  49         /* audio */
  50         enum v4l2_mpeg_audio_l2_bitrate au_l2_bitrate;
  51
  52         /* video */
  53         enum v4l2_mpeg_video_aspect     vi_aspect;
  54         enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
  55         __u32                           vi_bitrate;
  56         __u32                           vi_bitrate_peak;
  57 };
  58
  59 static const struct v4l2_format v4l2_format_table[] =
  60 {
  61         [SAA6752HS_VF_D1] =
  62                 { .fmt = { .pix = { .width = 720, .height = 576 }}},
  63         [SAA6752HS_VF_2_3_D1] =
  64                 { .fmt = { .pix = { .width = 480, .height = 576 }}},
  65         [SAA6752HS_VF_1_2_D1] =
  66                 { .fmt = { .pix = { .width = 352, .height = 576 }}},
  67         [SAA6752HS_VF_SIF] =
  68                 { .fmt = { .pix = { .width = 352, .height = 288 }}},
  69         [SAA6752HS_VF_UNKNOWN] =
  70                 { .fmt = { .pix = { .width = 0, .height = 0}}},
  71 };
  72
  73 struct saa6752hs_state {
  74         struct i2c_client             client;
  75         struct v4l2_mpeg_compression  old_params;
  76         struct saa6752hs_mpeg_params  params;
  77         enum saa6752hs_videoformat    video_format;
  78         v4l2_std_id                   standard;
  79 };
  80
  81 enum saa6752hs_command {
  82         SAA6752HS_COMMAND_RESET = 0,
  83         SAA6752HS_COMMAND_STOP = 1,
  84         SAA6752HS_COMMAND_START = 2,
  85         SAA6752HS_COMMAND_PAUSE = 3,
  86         SAA6752HS_COMMAND_RECONFIGURE = 4,
  87         SAA6752HS_COMMAND_SLEEP = 5,
  88         SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
  89
  90         SAA6752HS_COMMAND_MAX
  91 };
  92
  93 /* ---------------------------------------------------------------------- */
  94
  95 static u8 PAT[] = {
  96         0xc2, /* i2c register */
  97         0x00, /* table number for encoder */
  98
  99         0x47, /* sync */
 100         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
 101         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 102
 103         0x00, /* PSI pointer to start of table */
 104
 105         0x00, /* tid(0) */
 106         0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
 107
 108         0x00, 0x01, /* transport_stream_id(1) */
 109
 110         0xc1, /* version_number(0), current_next_indicator(1) */
 111
 112         0x00, 0x00, /* section_number(0), last_section_number(0) */
 113
 114         0x00, 0x01, /* program_number(1) */
 115
 116         0xe0, 0x00, /* PMT PID */
 117
 118         0x00, 0x00, 0x00, 0x00 /* CRC32 */
 119 };
 120
 121 static u8 PMT[] = {
 122         0xc2, /* i2c register */
 123         0x01, /* table number for encoder */
 124
 125         0x47, /* sync */
 126         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
 127         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 128
 129         0x00, /* PSI pointer to start of table */
 130
 131         0x02, /* tid(2) */
 132         0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
 133
 134         0x00, 0x01, /* program_number(1) */
 135
 136         0xc1, /* version_number(0), current_next_indicator(1) */
 137
 138         0x00, 0x00, /* section_number(0), last_section_number(0) */
 139
 140         0xe0, 0x00, /* PCR_PID */
 141
 142         0xf0, 0x00, /* program_info_length(0) */
 143
 144         0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
 145         0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
 146
 147         0x00, 0x00, 0x00, 0x00 /* CRC32 */
 148 };
 149
 150 static struct saa6752hs_mpeg_params param_defaults =
 151 {
 152         .ts_pid_pmt      = 16,
 153         .ts_pid_video    = 260,
 154         .ts_pid_audio    = 256,
 155         .ts_pid_pcr      = 259,
 156
 157         .vi_aspect       = V4L2_MPEG_VIDEO_ASPECT_4x3,
 158         .vi_bitrate      = 4000,
 159         .vi_bitrate_peak = 6000,
 160         .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
 161
 162         .au_l2_bitrate   = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
 163 };
 164
 165 static struct v4l2_mpeg_compression old_param_defaults =
 166 {
 167         .st_type         = V4L2_MPEG_TS_2,
 168         .st_bitrate      = {
 169                 .mode    = V4L2_BITRATE_CBR,
 170                 .target  = 7000,
 171         },
 172
 173         .ts_pid_pmt      = 16,
 174         .ts_pid_video    = 260,
 175         .ts_pid_audio    = 256,
 176         .ts_pid_pcr      = 259,
 177
 178         .vi_type         = V4L2_MPEG_VI_2,
 179         .vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
 180         .vi_bitrate      = {
 181                 .mode    = V4L2_BITRATE_VBR,
 182                 .target  = 4000,
 183                 .max     = 6000,
 184         },
 185
 186         .au_type         = V4L2_MPEG_AU_2_II,
 187         .au_bitrate      = {
 188                 .mode    = V4L2_BITRATE_CBR,
 189                 .target  = 256,
 190         },
 191
 192 };
 193
 194 /* ---------------------------------------------------------------------- */
 195
 196 static int saa6752hs_chip_command(struct i2c_client* client,
 197                                   enum saa6752hs_command command)
 198 {
 199         unsigned char buf[3];
 200         unsigned long timeout;
 201         int status = 0;
 202
 203         /* execute the command */
 204         switch(command) {
 205         case SAA6752HS_COMMAND_RESET:
 206                 buf[0] = 0x00;
 207                 break;
 208
 209         case SAA6752HS_COMMAND_STOP:
 210                 buf[0] = 0x03;
 211                 break;
 212
 213         case SAA6752HS_COMMAND_START:
 214                 buf[0] = 0x02;
 215                 break;
 216
 217         case SAA6752HS_COMMAND_PAUSE:
 218                 buf[0] = 0x04;
 219                 break;
 220
 221         case SAA6752HS_COMMAND_RECONFIGURE:
 222                 buf[0] = 0x05;
 223                 break;
 224
 225         case SAA6752HS_COMMAND_SLEEP:
 226                 buf[0] = 0x06;
 227                 break;
 228
 229         case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
 230                 buf[0] = 0x07;
 231                 break;
 232
 233         default:
 234                 return -EINVAL;
 235         }
 236
 237         /* set it and wait for it to be so */
 238         i2c_master_send(client, buf, 1);
 239         timeout = jiffies + HZ * 3;
 240         for (;;) {
 241                 /* get the current status */
 242                 buf[0] = 0x10;
 243                 i2c_master_send(client, buf, 1);
 244                 i2c_master_recv(client, buf, 1);
 245
 246                 if (!(buf[0] & 0x20))
 247                         break;
 248                 if (time_after(jiffies,timeout)) {
 249                         status = -ETIMEDOUT;
 250                         break;
 251                 }
 252
 253                 msleep(10);
 254         }
 255
 256         /* delay a bit to let encoder settle */
 257         msleep(50);
 258
 259         return status;
 260 }
 261
 262
 263 static int saa6752hs_set_bitrate(struct i2c_client* client,
 264                                  struct v4l2_mpeg_compression* params)
 265 {
 266         u8 buf[3];
 267
 268         /* set the bitrate mode */
 269         buf[0] = 0x71;
 270         buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
 271         i2c_master_send(client, buf, 2);
 272
 273         /* set the video bitrate */
 274         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
 275                 /* set the target bitrate */
 276                 buf[0] = 0x80;
 277                 buf[1] = params->vi_bitrate.target >> 8;
 278                 buf[2] = params->vi_bitrate.target & 0xff;
 279                 i2c_master_send(client, buf, 3);
 280
 281                 /* set the max bitrate */
 282                 buf[0] = 0x81;
 283                 buf[1] = params->vi_bitrate.max >> 8;
 284                 buf[2] = params->vi_bitrate.max & 0xff;
 285                 i2c_master_send(client, buf, 3);
 286         } else {
 287                 /* set the target bitrate (no max bitrate for CBR) */
 288                 buf[0] = 0x81;
 289                 buf[1] = params->vi_bitrate.target >> 8;
 290                 buf[2] = params->vi_bitrate.target & 0xff;
 291                 i2c_master_send(client, buf, 3);
 292         }
 293
 294         /* set the audio bitrate */
 295         buf[0] = 0x94;
 296         buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
 297         i2c_master_send(client, buf, 2);
 298
 299         /* set the total bitrate */
 300         buf[0] = 0xb1;
 301         buf[1] = params->st_bitrate.target >> 8;
 302         buf[2] = params->st_bitrate.target & 0xff;
 303         i2c_master_send(client, buf, 3);
 304
 305         return 0;
 306 }
 307
 308 static void saa6752hs_set_subsampling(struct i2c_client* client,
 309                                       struct v4l2_format* f)
 310 {
 311         struct saa6752hs_state *h = i2c_get_clientdata(client);
 312         int dist_352, dist_480, dist_720;
 313
 314         /*
 315           FIXME: translate and round width/height into EMPRESS
 316           subsample type:
 317
 318           type   |   PAL   |  NTSC
 319           ---------------------------
 320           SIF    | 352x288 | 352x240
 321           1/2 D1 | 352x576 | 352x480
 322           2/3 D1 | 480x576 | 480x480
 323           D1     | 720x576 | 720x480
 324         */
 325
 326         dist_352 = abs(f->fmt.pix.width - 352);
 327         dist_480 = abs(f->fmt.pix.width - 480);
 328         dist_720 = abs(f->fmt.pix.width - 720);
 329         if (dist_720 < dist_480) {
 330                 f->fmt.pix.width = 720;
 331                 f->fmt.pix.height = 576;
 332                 h->video_format = SAA6752HS_VF_D1;
 333         }
 334         else if (dist_480 < dist_352) {
 335                 f->fmt.pix.width = 480;
 336                 f->fmt.pix.height = 576;
 337                 h->video_format = SAA6752HS_VF_2_3_D1;
 338         }
 339         else {
 340                 f->fmt.pix.width = 352;
 341                 if (abs(f->fmt.pix.height - 576) <
 342                     abs(f->fmt.pix.height - 288)) {
 343                         f->fmt.pix.height = 576;
 344                         h->video_format = SAA6752HS_VF_1_2_D1;
 345                 }
 346                 else {
 347                         f->fmt.pix.height = 288;
 348                         h->video_format = SAA6752HS_VF_SIF;
 349                 }
 350         }
 351 }
 352
 353
 354 static void saa6752hs_old_set_params(struct i2c_client* client,
 355                                  struct v4l2_mpeg_compression* params)
 356 {
 357         struct saa6752hs_state *h = i2c_get_clientdata(client);
 358
 359         /* check PIDs */
 360         if (params->ts_pid_pmt <= MPEG_PID_MAX) {
 361                 h->old_params.ts_pid_pmt = params->ts_pid_pmt;
 362                 h->params.ts_pid_pmt = params->ts_pid_pmt;
 363         }
 364         if (params->ts_pid_pcr <= MPEG_PID_MAX) {
 365                 h->old_params.ts_pid_pcr = params->ts_pid_pcr;
 366                 h->params.ts_pid_pcr = params->ts_pid_pcr;
 367         }
 368         if (params->ts_pid_video <= MPEG_PID_MAX) {
 369                 h->old_params.ts_pid_video = params->ts_pid_video;
 370                 h->params.ts_pid_video = params->ts_pid_video;
 371         }
 372         if (params->ts_pid_audio <= MPEG_PID_MAX) {
 373                 h->old_params.ts_pid_audio = params->ts_pid_audio;
 374                 h->params.ts_pid_audio = params->ts_pid_audio;
 375         }
 376
 377         /* check bitrate parameters */
 378         if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
 379             (params->vi_bitrate.mode == V4L2_BITRATE_VBR)) {
 380                 h->old_params.vi_bitrate.mode = params->vi_bitrate.mode;
 381                 h->params.vi_bitrate_mode = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ?
 382                        V4L2_MPEG_VIDEO_BITRATE_MODE_VBR : V4L2_MPEG_VIDEO_BITRATE_MODE_CBR;
 383         }
 384         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 385                 h->old_params.st_bitrate.target = params->st_bitrate.target;
 386         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 387                 h->old_params.vi_bitrate.target = params->vi_bitrate.target;
 388         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
 389                 h->old_params.vi_bitrate.max = params->vi_bitrate.max;
 390         if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
 391                 h->old_params.au_bitrate.target = params->au_bitrate.target;
 392
 393         /* aspect ratio */
 394         if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
 395             params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9) {
 396                 h->old_params.vi_aspect_ratio = params->vi_aspect_ratio;
 397                 if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3)
 398                         h->params.vi_aspect = V4L2_MPEG_VIDEO_ASPECT_4x3;
 399                 else
 400                         h->params.vi_aspect = V4L2_MPEG_VIDEO_ASPECT_16x9;
 401         }
 402
 403         /* range checks */
 404         if (h->old_params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
 405                 h->old_params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
 406         if (h->old_params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
 407                 h->old_params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
 408         if (h->old_params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
 409                 h->old_params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
 410         h->params.vi_bitrate = params->vi_bitrate.target;
 411         h->params.vi_bitrate_peak = params->vi_bitrate.max;
 412         if (h->old_params.au_bitrate.target <= 256) {
 413                 h->old_params.au_bitrate.target = 256;
 414                 h->params.au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
 415         }
 416         else {
 417                 h->old_params.au_bitrate.target = 384;
 418                 h->params.au_l2_bitrate = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
 419         }
 420 }
 421
 422 static int handle_ctrl(struct saa6752hs_mpeg_params *params,
 423                 struct v4l2_ext_control *ctrl, int cmd)
 424 {
 425         int old = 0, new;
 426         int set = cmd == VIDIOC_S_EXT_CTRLS;
 427
 428         new = ctrl->value;
 429         switch (ctrl->id) {
 430                 case V4L2_CID_MPEG_STREAM_TYPE:
 431                         old = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
 432                         if (set && new != old)
 433                                 return -ERANGE;
 434                         new = old;
 435                         break;
 436                 case V4L2_CID_MPEG_STREAM_PID_PMT:
 437                         old = params->ts_pid_pmt;
 438                         if (set && new > MPEG_PID_MAX)
 439                                 return -ERANGE;
 440                         if (new > MPEG_PID_MAX)
 441                                 new = MPEG_PID_MAX;
 442                         params->ts_pid_pmt = new;
 443                         break;
 444                 case V4L2_CID_MPEG_STREAM_PID_AUDIO:
 445                         old = params->ts_pid_audio;
 446                         if (set && new > MPEG_PID_MAX)
 447                                 return -ERANGE;
 448                         if (new > MPEG_PID_MAX)
 449                                 new = MPEG_PID_MAX;
 450                         params->ts_pid_audio = new;
 451                         break;
 452                 case V4L2_CID_MPEG_STREAM_PID_VIDEO:
 453                         old = params->ts_pid_video;
 454                         if (set && new > MPEG_PID_MAX)
 455                                 return -ERANGE;
 456                         if (new > MPEG_PID_MAX)
 457                                 new = MPEG_PID_MAX;
 458                         params->ts_pid_video = new;
 459                         break;
 460                 case V4L2_CID_MPEG_STREAM_PID_PCR:
 461                         old = params->ts_pid_pcr;
 462                         if (set && new > MPEG_PID_MAX)
 463                                 return -ERANGE;
 464                         if (new > MPEG_PID_MAX)
 465                                 new = MPEG_PID_MAX;
 466                         params->ts_pid_pcr = new;
 467                         break;
 468                 case V4L2_CID_MPEG_AUDIO_ENCODING:
 469                         old = V4L2_MPEG_AUDIO_ENCODING_LAYER_2;
 470                         if (set && new != old)
 471                                 return -ERANGE;
 472                         new = old;
 473                         break;
 474                 case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
 475                         old = params->au_l2_bitrate;
 476                         if (set && new != V4L2_MPEG_AUDIO_L2_BITRATE_256K &&
 477                                    new != V4L2_MPEG_AUDIO_L2_BITRATE_384K)
 478                                 return -ERANGE;
 479                         if (new <= V4L2_MPEG_AUDIO_L2_BITRATE_256K)
 480                                 new = V4L2_MPEG_AUDIO_L2_BITRATE_256K;
 481                         else
 482                                 new = V4L2_MPEG_AUDIO_L2_BITRATE_384K;
 483                         params->au_l2_bitrate = new;
 484                         break;
 485                 case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
 486                         old = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000;
 487                         if (set && new != old)
 488                                 return -ERANGE;
 489                         new = old;
 490                         break;
 491                 case V4L2_CID_MPEG_VIDEO_ENCODING:
 492                         old = V4L2_MPEG_VIDEO_ENCODING_MPEG_2;
 493                         if (set && new != old)
 494                                 return -ERANGE;
 495                         new = old;
 496                         break;
 497                 case V4L2_CID_MPEG_VIDEO_ASPECT:
 498                         old = params->vi_aspect;
 499                         if (set && new != V4L2_MPEG_VIDEO_ASPECT_16x9 &&
 500                                    new != V4L2_MPEG_VIDEO_ASPECT_4x3)
 501                                 return -ERANGE;
 502                         if (new != V4L2_MPEG_VIDEO_ASPECT_16x9)
 503                                 new = V4L2_MPEG_VIDEO_ASPECT_4x3;
 504                         params->vi_aspect = new;
 505                         break;
 506                 case V4L2_CID_MPEG_VIDEO_BITRATE:
 507                         old = params->vi_bitrate * 1000;
 508                         new = 1000 * (new / 1000);
 509                         if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
 510                                 return -ERANGE;
 511                         if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
 512                                 new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
 513                         params->vi_bitrate = new / 1000;
 514                         break;
 515                 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
 516                         old = params->vi_bitrate_peak * 1000;
 517                         new = 1000 * (new / 1000);
 518                         if (set && new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
 519                                 return -ERANGE;
 520                         if (new > MPEG_VIDEO_TARGET_BITRATE_MAX * 1000)
 521                                 new = MPEG_VIDEO_TARGET_BITRATE_MAX * 1000;
 522                         params->vi_bitrate_peak = new / 1000;
 523                         break;
 524                 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
 525                         old = params->vi_bitrate_mode;
 526                         params->vi_bitrate_mode = new;
 527                         break;
 528                 default:
 529                         return -EINVAL;
 530         }
 531         if (cmd == VIDIOC_G_EXT_CTRLS)
 532                 ctrl->value = old;
 533         else
 534                 ctrl->value = new;
 535         return 0;
 536 }
 537
 538 static int saa6752hs_init(struct i2c_client* client)
 539 {
 540         unsigned char buf[9], buf2[4];
 541         struct saa6752hs_state *h;
 542         u32 crc;
 543         unsigned char localPAT[256];
 544         unsigned char localPMT[256];
 545
 546         h = i2c_get_clientdata(client);
 547
 548         /* Set video format - must be done first as it resets other settings */
 549         buf[0] = 0x41;
 550         buf[1] = h->video_format;
 551         i2c_master_send(client, buf, 2);
 552
 553         /* Set number of lines in input signal */
 554         buf[0] = 0x40;
 555         buf[1] = 0x00;
 556         if (h->standard & V4L2_STD_525_60)
 557                 buf[1] = 0x01;
 558         i2c_master_send(client, buf, 2);
 559
 560         /* set bitrate */
 561         saa6752hs_set_bitrate(client, &h->params);
 562
 563         /* Set GOP structure {3, 13} */
 564         buf[0] = 0x72;
 565         buf[1] = 0x03;
 566         buf[2] = 0x0D;
 567         i2c_master_send(client,buf,3);
 568
 569         /* Set minimum Q-scale {4} */
 570         buf[0] = 0x82;
 571         buf[1] = 0x04;
 572         i2c_master_send(client,buf,2);
 573
 574         /* Set maximum Q-scale {12} */
 575         buf[0] = 0x83;
 576         buf[1] = 0x0C;
 577         i2c_master_send(client,buf,2);
 578
 579         /* Set Output Protocol */
 580         buf[0] = 0xD0;
 581         buf[1] = 0x81;
 582         i2c_master_send(client,buf,2);
 583
 584         /* Set video output stream format {TS} */
 585         buf[0] = 0xB0;
 586         buf[1] = 0x05;
 587         i2c_master_send(client,buf,2);
 588
 589         /* compute PAT */
 590         memcpy(localPAT, PAT, sizeof(PAT));
 591         localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 592         localPAT[18] = h->params.ts_pid_pmt & 0xff;
 593         crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
 594         localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
 595         localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
 596         localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
 597         localPAT[sizeof(PAT) - 1] = crc & 0xFF;
 598
 599         /* compute PMT */
 600         memcpy(localPMT, PMT, sizeof(PMT));
 601         localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 602         localPMT[4] = h->params.ts_pid_pmt & 0xff;
 603         localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
 604         localPMT[16] = h->params.ts_pid_pcr & 0xFF;
 605         localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
 606         localPMT[21] = h->params.ts_pid_video & 0xFF;
 607         localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
 608         localPMT[26] = h->params.ts_pid_audio & 0xFF;
 609         crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
 610         localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
 611         localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
 612         localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
 613         localPMT[sizeof(PMT) - 1] = crc & 0xFF;
 614
 615         /* Set Audio PID */
 616         buf[0] = 0xC1;
 617         buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
 618         buf[2] = h->params.ts_pid_audio & 0xFF;
 619         i2c_master_send(client,buf,3);
 620
 621         /* Set Video PID */
 622         buf[0] = 0xC0;
 623         buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
 624         buf[2] = h->params.ts_pid_video & 0xFF;
 625         i2c_master_send(client,buf,3);
 626
 627         /* Set PCR PID */
 628         buf[0] = 0xC4;
 629         buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
 630         buf[2] = h->params.ts_pid_pcr & 0xFF;
 631         i2c_master_send(client,buf,3);
 632
 633         /* Send SI tables */
 634         i2c_master_send(client,localPAT,sizeof(PAT));
 635         i2c_master_send(client,localPMT,sizeof(PMT));
 636
 637         /* mute then unmute audio. This removes buzzing artefacts */
 638         buf[0] = 0xa4;
 639         buf[1] = 1;
 640         i2c_master_send(client, buf, 2);
 641         buf[1] = 0;
 642         i2c_master_send(client, buf, 2);
 643
 644         /* start it going */
 645         saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
 646
 647         /* readout current state */
 648         buf[0] = 0xE1;
 649         buf[1] = 0xA7;
 650         buf[2] = 0xFE;
 651         buf[3] = 0x82;
 652         buf[4] = 0xB0;
 653         i2c_master_send(client, buf, 5);
 654         i2c_master_recv(client, buf2, 4);
 655
 656         /* change aspect ratio */
 657         buf[0] = 0xE0;
 658         buf[1] = 0xA7;
 659         buf[2] = 0xFE;
 660         buf[3] = 0x82;
 661         buf[4] = 0xB0;
 662         buf[5] = buf2[0];
 663         switch(h->params.vi_aspect) {
 664         case V4L2_MPEG_VIDEO_ASPECT_16x9:
 665                 buf[6] = buf2[1] | 0x40;
 666                 break;
 667         case V4L2_MPEG_VIDEO_ASPECT_4x3:
 668         default:
 669                 buf[6] = buf2[1] & 0xBF;
 670                 break;
 671                 break;
 672         }
 673         buf[7] = buf2[2];
 674         buf[8] = buf2[3];
 675         i2c_master_send(client, buf, 9);
 676
 677         return 0;
 678 }
 679
 680 static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
 681 {
 682         struct saa6752hs_state *h;
 683
 684
 685         if (NULL == (h = kzalloc(sizeof(*h), GFP_KERNEL)))
 686                 return -ENOMEM;
 687         h->client = client_template;
 688         h->params = param_defaults;
 689         h->old_params = old_param_defaults;
 690         h->client.adapter = adap;
 691         h->client.addr = addr;
 692
 693         /* Assume 625 input lines */
 694         h->standard = 0;
 695
 696         i2c_set_clientdata(&h->client, h);
 697         i2c_attach_client(&h->client);
 698
 699         v4l_info(&h->client,"saa6752hs: chip found @ 0x%x\n", addr<<1);
 700
 701         return 0;
 702 }
 703
 704 static int saa6752hs_probe(struct i2c_adapter *adap)
 705 {
 706         if (adap->class & I2C_CLASS_TV_ANALOG)
 707                 return i2c_probe(adap, &addr_data, saa6752hs_attach);
 708         return 0;
 709 }
 710
 711 static int saa6752hs_detach(struct i2c_client *client)
 712 {
 713         struct saa6752hs_state *h;
 714
 715         h = i2c_get_clientdata(client);
 716         i2c_detach_client(client);
 717         kfree(h);
 718         return 0;
 719 }
 720
 721 static int
 722 saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
 723 {
 724         struct saa6752hs_state *h = i2c_get_clientdata(client);
 725         struct v4l2_ext_controls *ctrls = arg;
 726         struct v4l2_mpeg_compression *old_params = arg;
 727         struct saa6752hs_mpeg_params params;
 728         int err = 0;
 729         int i;
 730
 731         switch (cmd) {
 732         case VIDIOC_S_MPEGCOMP:
 733                 if (NULL == old_params) {
 734                         /* apply settings and start encoder */
 735                         saa6752hs_init(client);
 736                         break;
 737                 }
 738                 saa6752hs_old_set_params(client, old_params);
 739                 /* fall through */
 740         case VIDIOC_G_MPEGCOMP:
 741                 *old_params = h->old_params;
 742                 break;
 743         case VIDIOC_S_EXT_CTRLS:
 744                 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
 745                         return -EINVAL;
 746                 if (ctrls->count == 0) {
 747                         /* apply settings and start encoder */
 748                         saa6752hs_init(client);
 749                         break;
 750                 }
 751                 /* fall through */
 752         case VIDIOC_TRY_EXT_CTRLS:
 753         case VIDIOC_G_EXT_CTRLS:
 754                 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
 755                         return -EINVAL;
 756                 params = h->params;
 757                 for (i = 0; i < ctrls->count; i++) {
 758                         if ((err = handle_ctrl(&params, ctrls->controls + i, cmd))) {
 759                                 ctrls->error_idx = i;
 760                                 return err;
 761                         }
 762                 }
 763                 h->params = params;
 764                 break;
 765         case VIDIOC_G_FMT:
 766         {
 767            struct v4l2_format *f = arg;
 768
 769            if (h->video_format == SAA6752HS_VF_UNKNOWN)
 770                    h->video_format = SAA6752HS_VF_D1;
 771            f->fmt.pix.width =
 772                    v4l2_format_table[h->video_format].fmt.pix.width;
 773            f->fmt.pix.height =
 774                    v4l2_format_table[h->video_format].fmt.pix.height;
 775            break ;
 776         }
 777         case VIDIOC_S_FMT:
 778         {
 779                 struct v4l2_format *f = arg;
 780
 781                 saa6752hs_set_subsampling(client, f);
 782                 break;
 783         }
 784         case VIDIOC_S_STD:
 785                 h->standard = *((v4l2_std_id *) arg);
 786                 break;
 787         default:
 788                 /* nothing */
 789                 break;
 790         }
 791
 792         return err;
 793 }
 794
 795 /* ----------------------------------------------------------------------- */
 796
 797 static struct i2c_driver driver = {
 798         .driver = {
 799                 .name   = "saa6752hs",
 800         },
 801         .id             = I2C_DRIVERID_SAA6752HS,
 802         .attach_adapter = saa6752hs_probe,
 803         .detach_client  = saa6752hs_detach,
 804         .command        = saa6752hs_command,
 805 };
 806
 807 static struct i2c_client client_template =
 808 {
 809         .name       = "saa6752hs",
 810         .driver     = &driver,
 811 };
 812
 813 static int __init saa6752hs_init_module(void)
 814 {
 815         return i2c_add_driver(&driver);
 816 }
 817
 818 static void __exit saa6752hs_cleanup_module(void)
 819 {
 820         i2c_del_driver(&driver);
 821 }
 822
 823 module_init(saa6752hs_init_module);
 824 module_exit(saa6752hs_cleanup_module);
 825
 826 /*
 827  * Overrides for Emacs so that we follow Linus's tabbing style.
 828  * ---------------------------------------------------------------------------
 829  * Local variables:
 830  * c-basic-offset: 8
 831  * End:
 832  */