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 static const struct v4l2_format v4l2_format_table[] =
  43 {
  44         [SAA6752HS_VF_D1] =
  45                 { .fmt = { .pix = { .width = 720, .height = 576 }}},
  46         [SAA6752HS_VF_2_3_D1] =
  47                 { .fmt = { .pix = { .width = 480, .height = 576 }}},
  48         [SAA6752HS_VF_1_2_D1] =
  49                 { .fmt = { .pix = { .width = 352, .height = 576 }}},
  50         [SAA6752HS_VF_SIF] =
  51                 { .fmt = { .pix = { .width = 352, .height = 288 }}},
  52         [SAA6752HS_VF_UNKNOWN] =
  53                 { .fmt = { .pix = { .width = 0, .height = 0}}},
  54 };
  55
  56 struct saa6752hs_state {
  57         struct i2c_client             client;
  58         struct v4l2_mpeg_compression  params;
  59         enum saa6752hs_videoformat    video_format;
  60         v4l2_std_id                   standard;
  61 };
  62
  63 enum saa6752hs_command {
  64         SAA6752HS_COMMAND_RESET = 0,
  65         SAA6752HS_COMMAND_STOP = 1,
  66         SAA6752HS_COMMAND_START = 2,
  67         SAA6752HS_COMMAND_PAUSE = 3,
  68         SAA6752HS_COMMAND_RECONFIGURE = 4,
  69         SAA6752HS_COMMAND_SLEEP = 5,
  70         SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
  71
  72         SAA6752HS_COMMAND_MAX
  73 };
  74
  75 /* ---------------------------------------------------------------------- */
  76
  77 static u8 PAT[] = {
  78         0xc2, /* i2c register */
  79         0x00, /* table number for encoder */
  80
  81         0x47, /* sync */
  82         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
  83         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
  84
  85         0x00, /* PSI pointer to start of table */
  86
  87         0x00, /* tid(0) */
  88         0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
  89
  90         0x00, 0x01, /* transport_stream_id(1) */
  91
  92         0xc1, /* version_number(0), current_next_indicator(1) */
  93
  94         0x00, 0x00, /* section_number(0), last_section_number(0) */
  95
  96         0x00, 0x01, /* program_number(1) */
  97
  98         0xe0, 0x00, /* PMT PID */
  99
 100         0x00, 0x00, 0x00, 0x00 /* CRC32 */
 101 };
 102
 103 static u8 PMT[] = {
 104         0xc2, /* i2c register */
 105         0x01, /* table number for encoder */
 106
 107         0x47, /* sync */
 108         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
 109         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 110
 111         0x00, /* PSI pointer to start of table */
 112
 113         0x02, /* tid(2) */
 114         0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
 115
 116         0x00, 0x01, /* program_number(1) */
 117
 118         0xc1, /* version_number(0), current_next_indicator(1) */
 119
 120         0x00, 0x00, /* section_number(0), last_section_number(0) */
 121
 122         0xe0, 0x00, /* PCR_PID */
 123
 124         0xf0, 0x00, /* program_info_length(0) */
 125
 126         0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
 127         0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
 128
 129         0x00, 0x00, 0x00, 0x00 /* CRC32 */
 130 };
 131
 132 static struct v4l2_mpeg_compression param_defaults =
 133 {
 134         .st_type         = V4L2_MPEG_TS_2,
 135         .st_bitrate      = {
 136                 .mode    = V4L2_BITRATE_CBR,
 137                 .target  = 7000,
 138         },
 139
 140         .ts_pid_pmt      = 16,
 141         .ts_pid_video    = 260,
 142         .ts_pid_audio    = 256,
 143         .ts_pid_pcr      = 259,
 144
 145         .vi_type         = V4L2_MPEG_VI_2,
 146         .vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
 147         .vi_bitrate      = {
 148                 .mode    = V4L2_BITRATE_VBR,
 149                 .target  = 4000,
 150                 .max     = 6000,
 151         },
 152
 153         .au_type         = V4L2_MPEG_AU_2_II,
 154         .au_bitrate      = {
 155                 .mode    = V4L2_BITRATE_CBR,
 156                 .target  = 256,
 157         },
 158
 159 };
 160
 161 /* ---------------------------------------------------------------------- */
 162
 163 static int saa6752hs_chip_command(struct i2c_client* client,
 164                                   enum saa6752hs_command command)
 165 {
 166         unsigned char buf[3];
 167         unsigned long timeout;
 168         int status = 0;
 169
 170         /* execute the command */
 171         switch(command) {
 172         case SAA6752HS_COMMAND_RESET:
 173                 buf[0] = 0x00;
 174                 break;
 175
 176         case SAA6752HS_COMMAND_STOP:
 177                 buf[0] = 0x03;
 178                 break;
 179
 180         case SAA6752HS_COMMAND_START:
 181                 buf[0] = 0x02;
 182                 break;
 183
 184         case SAA6752HS_COMMAND_PAUSE:
 185                 buf[0] = 0x04;
 186                 break;
 187
 188         case SAA6752HS_COMMAND_RECONFIGURE:
 189                 buf[0] = 0x05;
 190                 break;
 191
 192         case SAA6752HS_COMMAND_SLEEP:
 193                 buf[0] = 0x06;
 194                 break;
 195
 196         case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
 197                 buf[0] = 0x07;
 198                 break;
 199
 200         default:
 201                 return -EINVAL;
 202         }
 203
 204         /* set it and wait for it to be so */
 205         i2c_master_send(client, buf, 1);
 206         timeout = jiffies + HZ * 3;
 207         for (;;) {
 208                 /* get the current status */
 209                 buf[0] = 0x10;
 210                 i2c_master_send(client, buf, 1);
 211                 i2c_master_recv(client, buf, 1);
 212
 213                 if (!(buf[0] & 0x20))
 214                         break;
 215                 if (time_after(jiffies,timeout)) {
 216                         status = -ETIMEDOUT;
 217                         break;
 218                 }
 219
 220                 msleep(10);
 221         }
 222
 223         /* delay a bit to let encoder settle */
 224         msleep(50);
 225
 226         return status;
 227 }
 228
 229
 230 static int saa6752hs_set_bitrate(struct i2c_client* client,
 231                                  struct v4l2_mpeg_compression* params)
 232 {
 233         u8 buf[3];
 234
 235         /* set the bitrate mode */
 236         buf[0] = 0x71;
 237         buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
 238         i2c_master_send(client, buf, 2);
 239
 240         /* set the video bitrate */
 241         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
 242                 /* set the target bitrate */
 243                 buf[0] = 0x80;
 244                 buf[1] = params->vi_bitrate.target >> 8;
 245                 buf[2] = params->vi_bitrate.target & 0xff;
 246                 i2c_master_send(client, buf, 3);
 247
 248                 /* set the max bitrate */
 249                 buf[0] = 0x81;
 250                 buf[1] = params->vi_bitrate.max >> 8;
 251                 buf[2] = params->vi_bitrate.max & 0xff;
 252                 i2c_master_send(client, buf, 3);
 253         } else {
 254                 /* set the target bitrate (no max bitrate for CBR) */
 255                 buf[0] = 0x81;
 256                 buf[1] = params->vi_bitrate.target >> 8;
 257                 buf[2] = params->vi_bitrate.target & 0xff;
 258                 i2c_master_send(client, buf, 3);
 259         }
 260
 261         /* set the audio bitrate */
 262         buf[0] = 0x94;
 263         buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
 264         i2c_master_send(client, buf, 2);
 265
 266         /* set the total bitrate */
 267         buf[0] = 0xb1;
 268         buf[1] = params->st_bitrate.target >> 8;
 269         buf[2] = params->st_bitrate.target & 0xff;
 270         i2c_master_send(client, buf, 3);
 271
 272         return 0;
 273 }
 274
 275 static void saa6752hs_set_subsampling(struct i2c_client* client,
 276                                       struct v4l2_format* f)
 277 {
 278         struct saa6752hs_state *h = i2c_get_clientdata(client);
 279         int dist_352, dist_480, dist_720;
 280
 281         /*
 282           FIXME: translate and round width/height into EMPRESS
 283           subsample type:
 284
 285           type   |   PAL   |  NTSC
 286           ---------------------------
 287           SIF    | 352x288 | 352x240
 288           1/2 D1 | 352x576 | 352x480
 289           2/3 D1 | 480x576 | 480x480
 290           D1     | 720x576 | 720x480
 291         */
 292
 293         dist_352 = abs(f->fmt.pix.width - 352);
 294         dist_480 = abs(f->fmt.pix.width - 480);
 295         dist_720 = abs(f->fmt.pix.width - 720);
 296         if (dist_720 < dist_480) {
 297                 f->fmt.pix.width = 720;
 298                 f->fmt.pix.height = 576;
 299                 h->video_format = SAA6752HS_VF_D1;
 300         }
 301         else if (dist_480 < dist_352) {
 302                 f->fmt.pix.width = 480;
 303                 f->fmt.pix.height = 576;
 304                 h->video_format = SAA6752HS_VF_2_3_D1;
 305         }
 306         else {
 307                 f->fmt.pix.width = 352;
 308                 if (abs(f->fmt.pix.height - 576) <
 309                     abs(f->fmt.pix.height - 288)) {
 310                         f->fmt.pix.height = 576;
 311                         h->video_format = SAA6752HS_VF_1_2_D1;
 312                 }
 313                 else {
 314                         f->fmt.pix.height = 288;
 315                         h->video_format = SAA6752HS_VF_SIF;
 316                 }
 317         }
 318 }
 319
 320
 321 static void saa6752hs_set_params(struct i2c_client* client,
 322                                  struct v4l2_mpeg_compression* params)
 323 {
 324         struct saa6752hs_state *h = i2c_get_clientdata(client);
 325
 326         /* check PIDs */
 327         if (params->ts_pid_pmt <= MPEG_PID_MAX)
 328                 h->params.ts_pid_pmt = params->ts_pid_pmt;
 329         if (params->ts_pid_pcr <= MPEG_PID_MAX)
 330                 h->params.ts_pid_pcr = params->ts_pid_pcr;
 331         if (params->ts_pid_video <= MPEG_PID_MAX)
 332                 h->params.ts_pid_video = params->ts_pid_video;
 333         if (params->ts_pid_audio <= MPEG_PID_MAX)
 334                 h->params.ts_pid_audio = params->ts_pid_audio;
 335
 336         /* check bitrate parameters */
 337         if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
 338             (params->vi_bitrate.mode == V4L2_BITRATE_VBR))
 339                 h->params.vi_bitrate.mode = params->vi_bitrate.mode;
 340         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 341                 h->params.st_bitrate.target = params->st_bitrate.target;
 342         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 343                 h->params.vi_bitrate.target = params->vi_bitrate.target;
 344         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
 345                 h->params.vi_bitrate.max = params->vi_bitrate.max;
 346         if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
 347                 h->params.au_bitrate.target = params->au_bitrate.target;
 348
 349         /* aspect ratio */
 350         if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
 351             params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9)
 352                 h->params.vi_aspect_ratio = params->vi_aspect_ratio;
 353
 354         /* range checks */
 355         if (h->params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
 356                 h->params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
 357         if (h->params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
 358                 h->params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
 359         if (h->params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
 360                 h->params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
 361         if (h->params.au_bitrate.target <= 256)
 362                 h->params.au_bitrate.target = 256;
 363         else
 364                 h->params.au_bitrate.target = 384;
 365 }
 366
 367 static int saa6752hs_init(struct i2c_client* client)
 368 {
 369         unsigned char buf[9], buf2[4];
 370         struct saa6752hs_state *h;
 371         u32 crc;
 372         unsigned char localPAT[256];
 373         unsigned char localPMT[256];
 374
 375         h = i2c_get_clientdata(client);
 376
 377         /* Set video format - must be done first as it resets other settings */
 378         buf[0] = 0x41;
 379         buf[1] = h->video_format;
 380         i2c_master_send(client, buf, 2);
 381
 382         /* Set number of lines in input signal */
 383         buf[0] = 0x40;
 384         buf[1] = 0x00;
 385         if (h->standard & V4L2_STD_525_60)
 386                 buf[1] = 0x01;
 387         i2c_master_send(client, buf, 2);
 388
 389         /* set bitrate */
 390         saa6752hs_set_bitrate(client, &h->params);
 391
 392         /* Set GOP structure {3, 13} */
 393         buf[0] = 0x72;
 394         buf[1] = 0x03;
 395         buf[2] = 0x0D;
 396         i2c_master_send(client,buf,3);
 397
 398         /* Set minimum Q-scale {4} */
 399         buf[0] = 0x82;
 400         buf[1] = 0x04;
 401         i2c_master_send(client,buf,2);
 402
 403         /* Set maximum Q-scale {12} */
 404         buf[0] = 0x83;
 405         buf[1] = 0x0C;
 406         i2c_master_send(client,buf,2);
 407
 408         /* Set Output Protocol */
 409         buf[0] = 0xD0;
 410         buf[1] = 0x81;
 411         i2c_master_send(client,buf,2);
 412
 413         /* Set video output stream format {TS} */
 414         buf[0] = 0xB0;
 415         buf[1] = 0x05;
 416         i2c_master_send(client,buf,2);
 417
 418         /* compute PAT */
 419         memcpy(localPAT, PAT, sizeof(PAT));
 420         localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 421         localPAT[18] = h->params.ts_pid_pmt & 0xff;
 422         crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
 423         localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
 424         localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
 425         localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
 426         localPAT[sizeof(PAT) - 1] = crc & 0xFF;
 427
 428         /* compute PMT */
 429         memcpy(localPMT, PMT, sizeof(PMT));
 430         localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 431         localPMT[4] = h->params.ts_pid_pmt & 0xff;
 432         localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
 433         localPMT[16] = h->params.ts_pid_pcr & 0xFF;
 434         localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
 435         localPMT[21] = h->params.ts_pid_video & 0xFF;
 436         localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
 437         localPMT[26] = h->params.ts_pid_audio & 0xFF;
 438         crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
 439         localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
 440         localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
 441         localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
 442         localPMT[sizeof(PMT) - 1] = crc & 0xFF;
 443
 444         /* Set Audio PID */
 445         buf[0] = 0xC1;
 446         buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
 447         buf[2] = h->params.ts_pid_audio & 0xFF;
 448         i2c_master_send(client,buf,3);
 449
 450         /* Set Video PID */
 451         buf[0] = 0xC0;
 452         buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
 453         buf[2] = h->params.ts_pid_video & 0xFF;
 454         i2c_master_send(client,buf,3);
 455
 456         /* Set PCR PID */
 457         buf[0] = 0xC4;
 458         buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
 459         buf[2] = h->params.ts_pid_pcr & 0xFF;
 460         i2c_master_send(client,buf,3);
 461
 462         /* Send SI tables */
 463         i2c_master_send(client,localPAT,sizeof(PAT));
 464         i2c_master_send(client,localPMT,sizeof(PMT));
 465
 466         /* mute then unmute audio. This removes buzzing artefacts */
 467         buf[0] = 0xa4;
 468         buf[1] = 1;
 469         i2c_master_send(client, buf, 2);
 470         buf[1] = 0;
 471         i2c_master_send(client, buf, 2);
 472
 473         /* start it going */
 474         saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
 475
 476         /* readout current state */
 477         buf[0] = 0xE1;
 478         buf[1] = 0xA7;
 479         buf[2] = 0xFE;
 480         buf[3] = 0x82;
 481         buf[4] = 0xB0;
 482         i2c_master_send(client, buf, 5);
 483         i2c_master_recv(client, buf2, 4);
 484
 485         /* change aspect ratio */
 486         buf[0] = 0xE0;
 487         buf[1] = 0xA7;
 488         buf[2] = 0xFE;
 489         buf[3] = 0x82;
 490         buf[4] = 0xB0;
 491         buf[5] = buf2[0];
 492         switch(h->params.vi_aspect_ratio) {
 493         case V4L2_MPEG_ASPECT_16_9:
 494                 buf[6] = buf2[1] | 0x40;
 495                 break;
 496         case V4L2_MPEG_ASPECT_4_3:
 497         default:
 498                 buf[6] = buf2[1] & 0xBF;
 499                 break;
 500                 break;
 501         }
 502         buf[7] = buf2[2];
 503         buf[8] = buf2[3];
 504         i2c_master_send(client, buf, 9);
 505
 506         return 0;
 507 }
 508
 509 static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
 510 {
 511         struct saa6752hs_state *h;
 512
 513
 514         if (NULL == (h = kmalloc(sizeof(*h), GFP_KERNEL)))
 515                 return -ENOMEM;
 516         memset(h,0,sizeof(*h));
 517         h->client = client_template;
 518         h->params = param_defaults;
 519         h->client.adapter = adap;
 520         h->client.addr = addr;
 521
 522         /* Assume 625 input lines */
 523         h->standard = 0;
 524
 525         i2c_set_clientdata(&h->client, h);
 526         i2c_attach_client(&h->client);
 527
 528         v4l_info(&h->client,"saa6752hs: chip found @ 0x%x\n", addr<<1);
 529
 530         return 0;
 531 }
 532
 533 static int saa6752hs_probe(struct i2c_adapter *adap)
 534 {
 535         if (adap->class & I2C_CLASS_TV_ANALOG)
 536                 return i2c_probe(adap, &addr_data, saa6752hs_attach);
 537         return 0;
 538 }
 539
 540 static int saa6752hs_detach(struct i2c_client *client)
 541 {
 542         struct saa6752hs_state *h;
 543
 544         h = i2c_get_clientdata(client);
 545         i2c_detach_client(client);
 546         kfree(h);
 547         return 0;
 548 }
 549
 550 static int
 551 saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
 552 {
 553         struct saa6752hs_state *h = i2c_get_clientdata(client);
 554         struct v4l2_mpeg_compression *params = arg;
 555         int err = 0;
 556
 557         switch (cmd) {
 558         case VIDIOC_S_MPEGCOMP:
 559                 if (NULL == params) {
 560                         /* apply settings and start encoder */
 561                         saa6752hs_init(client);
 562                         break;
 563                 }
 564                 saa6752hs_set_params(client, params);
 565                 /* fall through */
 566         case VIDIOC_G_MPEGCOMP:
 567                 *params = h->params;
 568                 break;
 569         case VIDIOC_G_FMT:
 570         {
 571            struct v4l2_format *f = arg;
 572
 573            if (h->video_format == SAA6752HS_VF_UNKNOWN)
 574                    h->video_format = SAA6752HS_VF_D1;
 575            f->fmt.pix.width =
 576                    v4l2_format_table[h->video_format].fmt.pix.width;
 577            f->fmt.pix.height =
 578                    v4l2_format_table[h->video_format].fmt.pix.height;
 579            break ;
 580         }
 581         case VIDIOC_S_FMT:
 582         {
 583                 struct v4l2_format *f = arg;
 584
 585                 saa6752hs_set_subsampling(client, f);
 586                 break;
 587         }
 588         case VIDIOC_S_STD:
 589                 h->standard = *((v4l2_std_id *) arg);
 590                 break;
 591         default:
 592                 /* nothing */
 593                 break;
 594         }
 595
 596         return err;
 597 }
 598
 599 /* ----------------------------------------------------------------------- */
 600
 601 static struct i2c_driver driver = {
 602         .driver = {
 603                 .name   = "saa6752hs",
 604         },
 605         .id             = I2C_DRIVERID_SAA6752HS,
 606         .attach_adapter = saa6752hs_probe,
 607         .detach_client  = saa6752hs_detach,
 608         .command        = saa6752hs_command,
 609 };
 610
 611 static struct i2c_client client_template =
 612 {
 613         .name       = "saa6752hs",
 614         .driver     = &driver,
 615 };
 616
 617 static int __init saa6752hs_init_module(void)
 618 {
 619         return i2c_add_driver(&driver);
 620 }
 621
 622 static void __exit saa6752hs_cleanup_module(void)
 623 {
 624         i2c_del_driver(&driver);
 625 }
 626
 627 module_init(saa6752hs_init_module);
 628 module_exit(saa6752hs_cleanup_module);
 629
 630 /*
 631  * Overrides for Emacs so that we follow Linus's tabbing style.
 632  * ---------------------------------------------------------------------------
 633  * Local variables:
 634  * c-basic-offset: 8
 635  * End:
 636  */