linux/drivers/media/i2c/saa6752hs.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3    saa6752hs - i2c-driver for the saa6752hs by Philips
   4
   5    Copyright (C) 2004 Andrew de Quincey
   6
   7    AC-3 support:
   8
   9    Copyright (C) 2008 Hans Verkuil <hverkuil@xs4all.nl>
  10
  11  */
  12
  13#include <linux/module.h>
  14#include <linux/kernel.h>
  15#include <linux/string.h>
  16#include <linux/timer.h>
  17#include <linux/delay.h>
  18#include <linux/errno.h>
  19#include <linux/slab.h>
  20#include <linux/poll.h>
  21#include <linux/i2c.h>
  22#include <linux/types.h>
  23#include <linux/videodev2.h>
  24#include <linux/init.h>
  25#include <linux/crc32.h>
  26#include <media/v4l2-device.h>
  27#include <media/v4l2-ctrls.h>
  28#include <media/v4l2-common.h>
  29
  30#define MPEG_VIDEO_TARGET_BITRATE_MAX  27000
  31#define MPEG_VIDEO_MAX_BITRATE_MAX     27000
  32#define MPEG_TOTAL_TARGET_BITRATE_MAX  27000
  33#define MPEG_PID_MAX ((1 << 14) - 1)
  34
  35
  36MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
  37MODULE_AUTHOR("Andrew de Quincey");
  38MODULE_LICENSE("GPL");
  39
  40enum saa6752hs_videoformat {
  41        SAA6752HS_VF_D1 = 0,    /* standard D1 video format: 720x576 */
  42        SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
  43        SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
  44        SAA6752HS_VF_SIF = 3,   /* SIF video format: 352x288 */
  45        SAA6752HS_VF_UNKNOWN,
  46};
  47
  48struct saa6752hs_mpeg_params {
  49        /* transport streams */
  50        __u16                           ts_pid_pmt;
  51        __u16                           ts_pid_audio;
  52        __u16                           ts_pid_video;
  53        __u16                           ts_pid_pcr;
  54
  55        /* audio */
  56        enum v4l2_mpeg_audio_encoding    au_encoding;
  57        enum v4l2_mpeg_audio_l2_bitrate  au_l2_bitrate;
  58        enum v4l2_mpeg_audio_ac3_bitrate au_ac3_bitrate;
  59
  60        /* video */
  61        enum v4l2_mpeg_video_aspect     vi_aspect;
  62        enum v4l2_mpeg_video_bitrate_mode vi_bitrate_mode;
  63        __u32                           vi_bitrate;
  64        __u32                           vi_bitrate_peak;
  65};
  66
  67static const struct v4l2_format v4l2_format_table[] =
  68{
  69        [SAA6752HS_VF_D1] =
  70                { .fmt = { .pix = { .width = 720, .height = 576 }}},
  71        [SAA6752HS_VF_2_3_D1] =
  72                { .fmt = { .pix = { .width = 480, .height = 576 }}},
  73        [SAA6752HS_VF_1_2_D1] =
  74                { .fmt = { .pix = { .width = 352, .height = 576 }}},
  75        [SAA6752HS_VF_SIF] =
  76                { .fmt = { .pix = { .width = 352, .height = 288 }}},
  77        [SAA6752HS_VF_UNKNOWN] =
  78                { .fmt = { .pix = { .width = 0, .height = 0}}},
  79};
  80
  81struct saa6752hs_state {
  82        struct v4l2_subdev            sd;
  83        struct v4l2_ctrl_handler      hdl;
  84        struct { /* video bitrate mode control cluster */
  85                struct v4l2_ctrl *video_bitrate_mode;
  86                struct v4l2_ctrl *video_bitrate;
  87                struct v4l2_ctrl *video_bitrate_peak;
  88        };
  89        u32                           revision;
  90        int                           has_ac3;
  91        struct saa6752hs_mpeg_params  params;
  92        enum saa6752hs_videoformat    video_format;
  93        v4l2_std_id                   standard;
  94};
  95
  96enum saa6752hs_command {
  97        SAA6752HS_COMMAND_RESET = 0,
  98        SAA6752HS_COMMAND_STOP = 1,
  99        SAA6752HS_COMMAND_START = 2,
 100        SAA6752HS_COMMAND_PAUSE = 3,
 101        SAA6752HS_COMMAND_RECONFIGURE = 4,
 102        SAA6752HS_COMMAND_SLEEP = 5,
 103        SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
 104
 105        SAA6752HS_COMMAND_MAX
 106};
 107
 108static inline struct saa6752hs_state *to_state(struct v4l2_subdev *sd)
 109{
 110        return container_of(sd, struct saa6752hs_state, sd);
 111}
 112
 113/* ---------------------------------------------------------------------- */
 114
 115static const u8 PAT[] = {
 116        0xc2, /* i2c register */
 117        0x00, /* table number for encoder */
 118
 119        0x47, /* sync */
 120        0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
 121        0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 122
 123        0x00, /* PSI pointer to start of table */
 124
 125        0x00, /* tid(0) */
 126        0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
 127
 128        0x00, 0x01, /* transport_stream_id(1) */
 129
 130        0xc1, /* version_number(0), current_next_indicator(1) */
 131
 132        0x00, 0x00, /* section_number(0), last_section_number(0) */
 133
 134        0x00, 0x01, /* program_number(1) */
 135
 136        0xe0, 0x00, /* PMT PID */
 137
 138        0x00, 0x00, 0x00, 0x00 /* CRC32 */
 139};
 140
 141static const u8 PMT[] = {
 142        0xc2, /* i2c register */
 143        0x01, /* table number for encoder */
 144
 145        0x47, /* sync */
 146        0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
 147        0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 148
 149        0x00, /* PSI pointer to start of table */
 150
 151        0x02, /* tid(2) */
 152        0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
 153
 154        0x00, 0x01, /* program_number(1) */
 155
 156        0xc1, /* version_number(0), current_next_indicator(1) */
 157
 158        0x00, 0x00, /* section_number(0), last_section_number(0) */
 159
 160        0xe0, 0x00, /* PCR_PID */
 161
 162        0xf0, 0x00, /* program_info_length(0) */
 163
 164        0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
 165        0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
 166
 167        0x00, 0x00, 0x00, 0x00 /* CRC32 */
 168};
 169
 170static const u8 PMT_AC3[] = {
 171        0xc2, /* i2c register */
 172        0x01, /* table number for encoder(1) */
 173        0x47, /* sync */
 174
 175        0x40, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0) */
 176        0x10, /* PMT PID (0x0010) */
 177        0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 178
 179        0x00, /* PSI pointer to start of table */
 180
 181        0x02, /* TID (2) */
 182        0xb0, 0x1a, /* section_syntax_indicator(1), section_length(26) */
 183
 184        0x00, 0x01, /* program_number(1) */
 185
 186        0xc1, /* version_number(0), current_next_indicator(1) */
 187
 188        0x00, 0x00, /* section_number(0), last_section_number(0) */
 189
 190        0xe1, 0x04, /* PCR_PID (0x0104) */
 191
 192        0xf0, 0x00, /* program_info_length(0) */
 193
 194        0x02, 0xe1, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
 195        0x06, 0xe1, 0x03, 0xf0, 0x03, /* audio stream type(6), pid */
 196        0x6a, /* AC3 */
 197        0x01, /* Descriptor_length(1) */
 198        0x00, /* component_type_flag(0), bsid_flag(0), mainid_flag(0), asvc_flag(0), reserved flags(0) */
 199
 200        0xED, 0xDE, 0x2D, 0xF3 /* CRC32 BE */
 201};
 202
 203static const struct saa6752hs_mpeg_params param_defaults =
 204{
 205        .ts_pid_pmt      = 16,
 206        .ts_pid_video    = 260,
 207        .ts_pid_audio    = 256,
 208        .ts_pid_pcr      = 259,
 209
 210        .vi_aspect       = V4L2_MPEG_VIDEO_ASPECT_4x3,
 211        .vi_bitrate      = 4000,
 212        .vi_bitrate_peak = 6000,
 213        .vi_bitrate_mode = V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
 214
 215        .au_encoding     = V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
 216        .au_l2_bitrate   = V4L2_MPEG_AUDIO_L2_BITRATE_256K,
 217        .au_ac3_bitrate  = V4L2_MPEG_AUDIO_AC3_BITRATE_256K,
 218};
 219
 220/* ---------------------------------------------------------------------- */
 221
 222static int saa6752hs_chip_command(struct i2c_client *client,
 223                                  enum saa6752hs_command command)
 224{
 225        unsigned char buf[3];
 226        unsigned long timeout;
 227        int status = 0;
 228
 229        /* execute the command */
 230        switch(command) {
 231        case SAA6752HS_COMMAND_RESET:
 232                buf[0] = 0x00;
 233                break;
 234
 235        case SAA6752HS_COMMAND_STOP:
 236                buf[0] = 0x03;
 237                break;
 238
 239        case SAA6752HS_COMMAND_START:
 240                buf[0] = 0x02;
 241                break;
 242
 243        case SAA6752HS_COMMAND_PAUSE:
 244                buf[0] = 0x04;
 245                break;
 246
 247        case SAA6752HS_COMMAND_RECONFIGURE:
 248                buf[0] = 0x05;
 249                break;
 250
 251        case SAA6752HS_COMMAND_SLEEP:
 252                buf[0] = 0x06;
 253                break;
 254
 255        case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
 256                buf[0] = 0x07;
 257                break;
 258
 259        default:
 260                return -EINVAL;
 261        }
 262
 263        /* set it and wait for it to be so */
 264        i2c_master_send(client, buf, 1);
 265        timeout = jiffies + HZ * 3;
 266        for (;;) {
 267                /* get the current status */
 268                buf[0] = 0x10;
 269                i2c_master_send(client, buf, 1);
 270                i2c_master_recv(client, buf, 1);
 271
 272                if (!(buf[0] & 0x20))
 273                        break;
 274                if (time_after(jiffies,timeout)) {
 275                        status = -ETIMEDOUT;
 276                        break;
 277                }
 278
 279                msleep(10);
 280        }
 281
 282        /* delay a bit to let encoder settle */
 283        msleep(50);
 284
 285        return status;
 286}
 287
 288
 289static inline void set_reg8(struct i2c_client *client, uint8_t reg, uint8_t val)
 290{
 291        u8 buf[2];
 292
 293        buf[0] = reg;
 294        buf[1] = val;
 295        i2c_master_send(client, buf, 2);
 296}
 297
 298static inline void set_reg16(struct i2c_client *client, uint8_t reg, uint16_t val)
 299{
 300        u8 buf[3];
 301
 302        buf[0] = reg;
 303        buf[1] = val >> 8;
 304        buf[2] = val & 0xff;
 305        i2c_master_send(client, buf, 3);
 306}
 307
 308static int saa6752hs_set_bitrate(struct i2c_client *client,
 309                                 struct saa6752hs_state *h)
 310{
 311        struct saa6752hs_mpeg_params *params = &h->params;
 312        int tot_bitrate;
 313        int is_384k;
 314
 315        /* set the bitrate mode */
 316        set_reg8(client, 0x71,
 317                params->vi_bitrate_mode != V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
 318
 319        /* set the video bitrate */
 320        if (params->vi_bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) {
 321                /* set the target bitrate */
 322                set_reg16(client, 0x80, params->vi_bitrate);
 323
 324                /* set the max bitrate */
 325                set_reg16(client, 0x81, params->vi_bitrate_peak);
 326                tot_bitrate = params->vi_bitrate_peak;
 327        } else {
 328                /* set the target bitrate (no max bitrate for CBR) */
 329                set_reg16(client, 0x81, params->vi_bitrate);
 330                tot_bitrate = params->vi_bitrate;
 331        }
 332
 333        /* set the audio encoding */
 334        set_reg8(client, 0x93,
 335                        params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3);
 336
 337        /* set the audio bitrate */
 338        if (params->au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3)
 339                is_384k = V4L2_MPEG_AUDIO_AC3_BITRATE_384K == params->au_ac3_bitrate;
 340        else
 341                is_384k = V4L2_MPEG_AUDIO_L2_BITRATE_384K == params->au_l2_bitrate;
 342        set_reg8(client, 0x94, is_384k);
 343        tot_bitrate += is_384k ? 384 : 256;
 344
 345        /* Note: the total max bitrate is determined by adding the video and audio
 346           bitrates together and also adding an extra 768kbit/s to stay on the
 347           safe side. If more control should be required, then an extra MPEG control
 348           should be added. */
 349        tot_bitrate += 768;
 350        if (tot_bitrate > MPEG_TOTAL_TARGET_BITRATE_MAX)
 351                tot_bitrate = MPEG_TOTAL_TARGET_BITRATE_MAX;
 352
 353        /* set the total bitrate */
 354        set_reg16(client, 0xb1, tot_bitrate);
 355        return 0;
 356}
 357
 358static int saa6752hs_try_ctrl(struct v4l2_ctrl *ctrl)
 359{
 360        struct saa6752hs_state *h =
 361                container_of(ctrl->handler, struct saa6752hs_state, hdl);
 362
 363        switch (ctrl->id) {
 364        case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
 365                /* peak bitrate shall be >= normal bitrate */
 366                if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
 367                    h->video_bitrate_peak->val < h->video_bitrate->val)
 368                        h->video_bitrate_peak->val = h->video_bitrate->val;
 369                break;
 370        }
 371        return 0;
 372}
 373
 374static int saa6752hs_s_ctrl(struct v4l2_ctrl *ctrl)
 375{
 376        struct saa6752hs_state *h =
 377                container_of(ctrl->handler, struct saa6752hs_state, hdl);
 378        struct saa6752hs_mpeg_params *params = &h->params;
 379
 380        switch (ctrl->id) {
 381        case V4L2_CID_MPEG_STREAM_TYPE:
 382                break;
 383        case V4L2_CID_MPEG_STREAM_PID_PMT:
 384                params->ts_pid_pmt = ctrl->val;
 385                break;
 386        case V4L2_CID_MPEG_STREAM_PID_AUDIO:
 387                params->ts_pid_audio = ctrl->val;
 388                break;
 389        case V4L2_CID_MPEG_STREAM_PID_VIDEO:
 390                params->ts_pid_video = ctrl->val;
 391                break;
 392        case V4L2_CID_MPEG_STREAM_PID_PCR:
 393                params->ts_pid_pcr = ctrl->val;
 394                break;
 395        case V4L2_CID_MPEG_AUDIO_ENCODING:
 396                params->au_encoding = ctrl->val;
 397                break;
 398        case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
 399                params->au_l2_bitrate = ctrl->val;
 400                break;
 401        case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
 402                params->au_ac3_bitrate = ctrl->val;
 403                break;
 404        case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
 405                break;
 406        case V4L2_CID_MPEG_VIDEO_ENCODING:
 407                break;
 408        case V4L2_CID_MPEG_VIDEO_ASPECT:
 409                params->vi_aspect = ctrl->val;
 410                break;
 411        case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
 412                params->vi_bitrate_mode = ctrl->val;
 413                params->vi_bitrate = h->video_bitrate->val / 1000;
 414                params->vi_bitrate_peak = h->video_bitrate_peak->val / 1000;
 415                v4l2_ctrl_activate(h->video_bitrate_peak,
 416                                ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
 417                break;
 418        default:
 419                return -EINVAL;
 420        }
 421        return 0;
 422}
 423
 424static int saa6752hs_init(struct v4l2_subdev *sd, u32 leading_null_bytes)
 425{
 426        unsigned char buf[9], buf2[4];
 427        struct saa6752hs_state *h = to_state(sd);
 428        struct i2c_client *client = v4l2_get_subdevdata(sd);
 429        unsigned size;
 430        u32 crc;
 431        unsigned char localPAT[256];
 432        unsigned char localPMT[256];
 433
 434        /* Set video format - must be done first as it resets other settings */
 435        set_reg8(client, 0x41, h->video_format);
 436
 437        /* Set number of lines in input signal */
 438        set_reg8(client, 0x40, (h->standard & V4L2_STD_525_60) ? 1 : 0);
 439
 440        /* set bitrate */
 441        saa6752hs_set_bitrate(client, h);
 442
 443        /* Set GOP structure {3, 13} */
 444        set_reg16(client, 0x72, 0x030d);
 445
 446        /* Set minimum Q-scale {4} */
 447        set_reg8(client, 0x82, 0x04);
 448
 449        /* Set maximum Q-scale {12} */
 450        set_reg8(client, 0x83, 0x0c);
 451
 452        /* Set Output Protocol */
 453        set_reg8(client, 0xd0, 0x81);
 454
 455        /* Set video output stream format {TS} */
 456        set_reg8(client, 0xb0, 0x05);
 457
 458        /* Set leading null byte for TS */
 459        set_reg16(client, 0xf6, leading_null_bytes);
 460
 461        /* compute PAT */
 462        memcpy(localPAT, PAT, sizeof(PAT));
 463        localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 464        localPAT[18] = h->params.ts_pid_pmt & 0xff;
 465        crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
 466        localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
 467        localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
 468        localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
 469        localPAT[sizeof(PAT) - 1] = crc & 0xFF;
 470
 471        /* compute PMT */
 472        if (h->params.au_encoding == V4L2_MPEG_AUDIO_ENCODING_AC3) {
 473                size = sizeof(PMT_AC3);
 474                memcpy(localPMT, PMT_AC3, size);
 475        } else {
 476                size = sizeof(PMT);
 477                memcpy(localPMT, PMT, size);
 478        }
 479        localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 480        localPMT[4] = h->params.ts_pid_pmt & 0xff;
 481        localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
 482        localPMT[16] = h->params.ts_pid_pcr & 0xFF;
 483        localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
 484        localPMT[21] = h->params.ts_pid_video & 0xFF;
 485        localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
 486        localPMT[26] = h->params.ts_pid_audio & 0xFF;
 487        crc = crc32_be(~0, &localPMT[7], size - 7 - 4);
 488        localPMT[size - 4] = (crc >> 24) & 0xFF;
 489        localPMT[size - 3] = (crc >> 16) & 0xFF;
 490        localPMT[size - 2] = (crc >> 8) & 0xFF;
 491        localPMT[size - 1] = crc & 0xFF;
 492
 493        /* Set Audio PID */
 494        set_reg16(client, 0xc1, h->params.ts_pid_audio);
 495
 496        /* Set Video PID */
 497        set_reg16(client, 0xc0, h->params.ts_pid_video);
 498
 499        /* Set PCR PID */
 500        set_reg16(client, 0xc4, h->params.ts_pid_pcr);
 501
 502        /* Send SI tables */
 503        i2c_master_send(client, localPAT, sizeof(PAT));
 504        i2c_master_send(client, localPMT, size);
 505
 506        /* mute then unmute audio. This removes buzzing artefacts */
 507        set_reg8(client, 0xa4, 1);
 508        set_reg8(client, 0xa4, 0);
 509
 510        /* start it going */
 511        saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
 512
 513        /* readout current state */
 514        buf[0] = 0xE1;
 515        buf[1] = 0xA7;
 516        buf[2] = 0xFE;
 517        buf[3] = 0x82;
 518        buf[4] = 0xB0;
 519        i2c_master_send(client, buf, 5);
 520        i2c_master_recv(client, buf2, 4);
 521
 522        /* change aspect ratio */
 523        buf[0] = 0xE0;
 524        buf[1] = 0xA7;
 525        buf[2] = 0xFE;
 526        buf[3] = 0x82;
 527        buf[4] = 0xB0;
 528        buf[5] = buf2[0];
 529        switch (h->params.vi_aspect) {
 530        case V4L2_MPEG_VIDEO_ASPECT_16x9:
 531                buf[6] = buf2[1] | 0x40;
 532                break;
 533        case V4L2_MPEG_VIDEO_ASPECT_4x3:
 534        default:
 535                buf[6] = buf2[1] & 0xBF;
 536                break;
 537        }
 538        buf[7] = buf2[2];
 539        buf[8] = buf2[3];
 540        i2c_master_send(client, buf, 9);
 541
 542        return 0;
 543}
 544
 545static int saa6752hs_get_fmt(struct v4l2_subdev *sd,
 546                struct v4l2_subdev_state *sd_state,
 547                struct v4l2_subdev_format *format)
 548{
 549        struct v4l2_mbus_framefmt *f = &format->format;
 550        struct saa6752hs_state *h = to_state(sd);
 551
 552        if (format->pad)
 553                return -EINVAL;
 554
 555        if (h->video_format == SAA6752HS_VF_UNKNOWN)
 556                h->video_format = SAA6752HS_VF_D1;
 557        f->width = v4l2_format_table[h->video_format].fmt.pix.width;
 558        f->height = v4l2_format_table[h->video_format].fmt.pix.height;
 559        f->code = MEDIA_BUS_FMT_FIXED;
 560        f->field = V4L2_FIELD_INTERLACED;
 561        f->colorspace = V4L2_COLORSPACE_SMPTE170M;
 562        return 0;
 563}
 564
 565static int saa6752hs_set_fmt(struct v4l2_subdev *sd,
 566                struct v4l2_subdev_state *sd_state,
 567                struct v4l2_subdev_format *format)
 568{
 569        struct v4l2_mbus_framefmt *f = &format->format;
 570        struct saa6752hs_state *h = to_state(sd);
 571        int dist_352, dist_480, dist_720;
 572
 573        if (format->pad)
 574                return -EINVAL;
 575
 576        f->code = MEDIA_BUS_FMT_FIXED;
 577
 578        dist_352 = abs(f->width - 352);
 579        dist_480 = abs(f->width - 480);
 580        dist_720 = abs(f->width - 720);
 581        if (dist_720 < dist_480) {
 582                f->width = 720;
 583                f->height = 576;
 584        } else if (dist_480 < dist_352) {
 585                f->width = 480;
 586                f->height = 576;
 587        } else {
 588                f->width = 352;
 589                if (abs(f->height - 576) < abs(f->height - 288))
 590                        f->height = 576;
 591                else
 592                        f->height = 288;
 593        }
 594        f->field = V4L2_FIELD_INTERLACED;
 595        f->colorspace = V4L2_COLORSPACE_SMPTE170M;
 596
 597        if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
 598                sd_state->pads->try_fmt = *f;
 599                return 0;
 600        }
 601
 602        /*
 603          FIXME: translate and round width/height into EMPRESS
 604          subsample type:
 605
 606          type   |   PAL   |  NTSC
 607          ---------------------------
 608          SIF    | 352x288 | 352x240
 609          1/2 D1 | 352x576 | 352x480
 610          2/3 D1 | 480x576 | 480x480
 611          D1     | 720x576 | 720x480
 612        */
 613
 614        if (f->code != MEDIA_BUS_FMT_FIXED)
 615                return -EINVAL;
 616
 617        if (f->width == 720)
 618                h->video_format = SAA6752HS_VF_D1;
 619        else if (f->width == 480)
 620                h->video_format = SAA6752HS_VF_2_3_D1;
 621        else if (f->height == 576)
 622                h->video_format = SAA6752HS_VF_1_2_D1;
 623        else
 624                h->video_format = SAA6752HS_VF_SIF;
 625        return 0;
 626}
 627
 628static int saa6752hs_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 629{
 630        struct saa6752hs_state *h = to_state(sd);
 631
 632        h->standard = std;
 633        return 0;
 634}
 635
 636/* ----------------------------------------------------------------------- */
 637
 638static const struct v4l2_ctrl_ops saa6752hs_ctrl_ops = {
 639        .try_ctrl = saa6752hs_try_ctrl,
 640        .s_ctrl = saa6752hs_s_ctrl,
 641};
 642
 643static const struct v4l2_subdev_core_ops saa6752hs_core_ops = {
 644        .init = saa6752hs_init,
 645};
 646
 647static const struct v4l2_subdev_video_ops saa6752hs_video_ops = {
 648        .s_std = saa6752hs_s_std,
 649};
 650
 651static const struct v4l2_subdev_pad_ops saa6752hs_pad_ops = {
 652        .get_fmt = saa6752hs_get_fmt,
 653        .set_fmt = saa6752hs_set_fmt,
 654};
 655
 656static const struct v4l2_subdev_ops saa6752hs_ops = {
 657        .core = &saa6752hs_core_ops,
 658        .video = &saa6752hs_video_ops,
 659        .pad = &saa6752hs_pad_ops,
 660};
 661
 662static int saa6752hs_probe(struct i2c_client *client,
 663                const struct i2c_device_id *id)
 664{
 665        struct saa6752hs_state *h;
 666        struct v4l2_subdev *sd;
 667        struct v4l2_ctrl_handler *hdl;
 668        u8 addr = 0x13;
 669        u8 data[12];
 670
 671        v4l_info(client, "chip found @ 0x%x (%s)\n",
 672                        client->addr << 1, client->adapter->name);
 673
 674        h = devm_kzalloc(&client->dev, sizeof(*h), GFP_KERNEL);
 675        if (h == NULL)
 676                return -ENOMEM;
 677        sd = &h->sd;
 678        v4l2_i2c_subdev_init(sd, client, &saa6752hs_ops);
 679
 680        i2c_master_send(client, &addr, 1);
 681        i2c_master_recv(client, data, sizeof(data));
 682        h->revision = (data[8] << 8) | data[9];
 683        h->has_ac3 = 0;
 684        if (h->revision == 0x0206) {
 685                h->has_ac3 = 1;
 686                v4l_info(client, "supports AC-3\n");
 687        }
 688        h->params = param_defaults;
 689
 690        hdl = &h->hdl;
 691        v4l2_ctrl_handler_init(hdl, 14);
 692        v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 693                V4L2_CID_MPEG_AUDIO_ENCODING,
 694                h->has_ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 :
 695                        V4L2_MPEG_AUDIO_ENCODING_LAYER_2,
 696                0x0d, V4L2_MPEG_AUDIO_ENCODING_LAYER_2);
 697
 698        v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 699                V4L2_CID_MPEG_AUDIO_L2_BITRATE,
 700                V4L2_MPEG_AUDIO_L2_BITRATE_384K,
 701                ~((1 << V4L2_MPEG_AUDIO_L2_BITRATE_256K) |
 702                  (1 << V4L2_MPEG_AUDIO_L2_BITRATE_384K)),
 703                V4L2_MPEG_AUDIO_L2_BITRATE_256K);
 704
 705        if (h->has_ac3)
 706                v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 707                        V4L2_CID_MPEG_AUDIO_AC3_BITRATE,
 708                        V4L2_MPEG_AUDIO_AC3_BITRATE_384K,
 709                        ~((1 << V4L2_MPEG_AUDIO_AC3_BITRATE_256K) |
 710                          (1 << V4L2_MPEG_AUDIO_AC3_BITRATE_384K)),
 711                        V4L2_MPEG_AUDIO_AC3_BITRATE_256K);
 712
 713        v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 714                V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
 715                V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,
 716                ~(1 << V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000),
 717                V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000);
 718
 719        v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 720                V4L2_CID_MPEG_VIDEO_ENCODING,
 721                V4L2_MPEG_VIDEO_ENCODING_MPEG_2,
 722                ~(1 << V4L2_MPEG_VIDEO_ENCODING_MPEG_2),
 723                V4L2_MPEG_VIDEO_ENCODING_MPEG_2);
 724
 725        v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 726                V4L2_CID_MPEG_VIDEO_ASPECT,
 727                V4L2_MPEG_VIDEO_ASPECT_16x9, 0x01,
 728                V4L2_MPEG_VIDEO_ASPECT_4x3);
 729
 730        h->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
 731                V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
 732                1000000, 27000000, 1000, 8000000);
 733
 734        v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 735                V4L2_CID_MPEG_STREAM_TYPE,
 736                V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
 737                ~(1 << V4L2_MPEG_STREAM_TYPE_MPEG2_TS),
 738                V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
 739
 740        h->video_bitrate_mode = v4l2_ctrl_new_std_menu(hdl, &saa6752hs_ctrl_ops,
 741                V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
 742                V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
 743                V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
 744        h->video_bitrate = v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
 745                V4L2_CID_MPEG_VIDEO_BITRATE, 1000000, 27000000, 1000, 6000000);
 746        v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
 747                V4L2_CID_MPEG_STREAM_PID_PMT, 0, (1 << 14) - 1, 1, 16);
 748        v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
 749                V4L2_CID_MPEG_STREAM_PID_AUDIO, 0, (1 << 14) - 1, 1, 260);
 750        v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
 751                V4L2_CID_MPEG_STREAM_PID_VIDEO, 0, (1 << 14) - 1, 1, 256);
 752        v4l2_ctrl_new_std(hdl, &saa6752hs_ctrl_ops,
 753                V4L2_CID_MPEG_STREAM_PID_PCR, 0, (1 << 14) - 1, 1, 259);
 754        sd->ctrl_handler = hdl;
 755        if (hdl->error) {
 756                int err = hdl->error;
 757
 758                v4l2_ctrl_handler_free(hdl);
 759                return err;
 760        }
 761        v4l2_ctrl_cluster(3, &h->video_bitrate_mode);
 762        v4l2_ctrl_handler_setup(hdl);
 763        h->standard = 0; /* Assume 625 input lines */
 764        return 0;
 765}
 766
 767static int saa6752hs_remove(struct i2c_client *client)
 768{
 769        struct v4l2_subdev *sd = i2c_get_clientdata(client);
 770
 771        v4l2_device_unregister_subdev(sd);
 772        v4l2_ctrl_handler_free(&to_state(sd)->hdl);
 773        return 0;
 774}
 775
 776static const struct i2c_device_id saa6752hs_id[] = {
 777        { "saa6752hs", 0 },
 778        { }
 779};
 780MODULE_DEVICE_TABLE(i2c, saa6752hs_id);
 781
 782static struct i2c_driver saa6752hs_driver = {
 783        .driver = {
 784                .name   = "saa6752hs",
 785        },
 786        .probe          = saa6752hs_probe,
 787        .remove         = saa6752hs_remove,
 788        .id_table       = saa6752hs_id,
 789};
 790
 791module_i2c_driver(saa6752hs_driver);
 792