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/videodev.h>
  13 #include <linux/init.h>
  14 #include <linux/crc32.h>
  15
  16
  17 #define MPEG_VIDEO_TARGET_BITRATE_MAX  27000
  18 #define MPEG_VIDEO_MAX_BITRATE_MAX     27000
  19 #define MPEG_TOTAL_TARGET_BITRATE_MAX  27000
  20 #define MPEG_PID_MAX ((1 << 14) - 1)
  21
  22 /* Addresses to scan */
  23 static unsigned short normal_i2c[] = {0x20, I2C_CLIENT_END};
  24 I2C_CLIENT_INSMOD;
  25
  26 MODULE_DESCRIPTION("device driver for saa6752hs MPEG2 encoder");
  27 MODULE_AUTHOR("Andrew de Quincey");
  28 MODULE_LICENSE("GPL");
  29
  30 static struct i2c_driver driver;
  31 static struct i2c_client client_template;
  32
  33 enum saa6752hs_videoformat {
  34         SAA6752HS_VF_D1 = 0,    /* standard D1 video format: 720x576 */
  35         SAA6752HS_VF_2_3_D1 = 1,/* 2/3D1 video format: 480x576 */
  36         SAA6752HS_VF_1_2_D1 = 2,/* 1/2D1 video format: 352x576 */
  37         SAA6752HS_VF_SIF = 3,   /* SIF video format: 352x288 */
  38         SAA6752HS_VF_UNKNOWN,
  39 };
  40
  41 static const struct v4l2_format v4l2_format_table[] =
  42 {
  43         [SAA6752HS_VF_D1] =
  44                 { .fmt = { .pix = { .width = 720, .height = 576 }}},
  45         [SAA6752HS_VF_2_3_D1] =
  46                 { .fmt = { .pix = { .width = 480, .height = 576 }}},
  47         [SAA6752HS_VF_1_2_D1] =
  48                 { .fmt = { .pix = { .width = 352, .height = 576 }}},
  49         [SAA6752HS_VF_SIF] =
  50                 { .fmt = { .pix = { .width = 352, .height = 288 }}},
  51         [SAA6752HS_VF_UNKNOWN] =
  52                 { .fmt = { .pix = { .width = 0, .height = 0}}},
  53 };
  54
  55 struct saa6752hs_state {
  56         struct i2c_client             client;
  57         struct v4l2_mpeg_compression  params;
  58         enum saa6752hs_videoformat    video_format;
  59         v4l2_std_id                   standard;
  60 };
  61
  62 enum saa6752hs_command {
  63         SAA6752HS_COMMAND_RESET = 0,
  64         SAA6752HS_COMMAND_STOP = 1,
  65         SAA6752HS_COMMAND_START = 2,
  66         SAA6752HS_COMMAND_PAUSE = 3,
  67         SAA6752HS_COMMAND_RECONFIGURE = 4,
  68         SAA6752HS_COMMAND_SLEEP = 5,
  69         SAA6752HS_COMMAND_RECONFIGURE_FORCE = 6,
  70
  71         SAA6752HS_COMMAND_MAX
  72 };
  73
  74 /* ---------------------------------------------------------------------- */
  75
  76 static u8 PAT[] = {
  77         0xc2, /* i2c register */
  78         0x00, /* table number for encoder */
  79
  80         0x47, /* sync */
  81         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid(0) */
  82         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
  83
  84         0x00, /* PSI pointer to start of table */
  85
  86         0x00, /* tid(0) */
  87         0xb0, 0x0d, /* section_syntax_indicator(1), section_length(13) */
  88
  89         0x00, 0x01, /* transport_stream_id(1) */
  90
  91         0xc1, /* version_number(0), current_next_indicator(1) */
  92
  93         0x00, 0x00, /* section_number(0), last_section_number(0) */
  94
  95         0x00, 0x01, /* program_number(1) */
  96
  97         0xe0, 0x00, /* PMT PID */
  98
  99         0x00, 0x00, 0x00, 0x00 /* CRC32 */
 100 };
 101
 102 static u8 PMT[] = {
 103         0xc2, /* i2c register */
 104         0x01, /* table number for encoder */
 105
 106         0x47, /* sync */
 107         0x40, 0x00, /* transport_error_indicator(0), payload_unit_start(1), transport_priority(0), pid */
 108         0x10, /* transport_scrambling_control(00), adaptation_field_control(01), continuity_counter(0) */
 109
 110         0x00, /* PSI pointer to start of table */
 111
 112         0x02, /* tid(2) */
 113         0xb0, 0x17, /* section_syntax_indicator(1), section_length(23) */
 114
 115         0x00, 0x01, /* program_number(1) */
 116
 117         0xc1, /* version_number(0), current_next_indicator(1) */
 118
 119         0x00, 0x00, /* section_number(0), last_section_number(0) */
 120
 121         0xe0, 0x00, /* PCR_PID */
 122
 123         0xf0, 0x00, /* program_info_length(0) */
 124
 125         0x02, 0xe0, 0x00, 0xf0, 0x00, /* video stream type(2), pid */
 126         0x04, 0xe0, 0x00, 0xf0, 0x00, /* audio stream type(4), pid */
 127
 128         0x00, 0x00, 0x00, 0x00 /* CRC32 */
 129 };
 130
 131 static struct v4l2_mpeg_compression param_defaults =
 132 {
 133         .st_type         = V4L2_MPEG_TS_2,
 134         .st_bitrate      = {
 135                 .mode    = V4L2_BITRATE_CBR,
 136                 .target  = 7000,
 137         },
 138
 139         .ts_pid_pmt      = 16,
 140         .ts_pid_video    = 260,
 141         .ts_pid_audio    = 256,
 142         .ts_pid_pcr      = 259,
 143
 144         .vi_type         = V4L2_MPEG_VI_2,
 145         .vi_aspect_ratio = V4L2_MPEG_ASPECT_4_3,
 146         .vi_bitrate      = {
 147                 .mode    = V4L2_BITRATE_VBR,
 148                 .target  = 4000,
 149                 .max     = 6000,
 150         },
 151
 152         .au_type         = V4L2_MPEG_AU_2_II,
 153         .au_bitrate      = {
 154                 .mode    = V4L2_BITRATE_CBR,
 155                 .target  = 256,
 156         },
 157
 158 };
 159
 160 /* ---------------------------------------------------------------------- */
 161
 162 static int saa6752hs_chip_command(struct i2c_client* client,
 163                                   enum saa6752hs_command command)
 164 {
 165         unsigned char buf[3];
 166         unsigned long timeout;
 167         int status = 0;
 168
 169         /* execute the command */
 170         switch(command) {
 171         case SAA6752HS_COMMAND_RESET:
 172                 buf[0] = 0x00;
 173                 break;
 174
 175         case SAA6752HS_COMMAND_STOP:
 176                 buf[0] = 0x03;
 177                 break;
 178
 179         case SAA6752HS_COMMAND_START:
 180                 buf[0] = 0x02;
 181                 break;
 182
 183         case SAA6752HS_COMMAND_PAUSE:
 184                 buf[0] = 0x04;
 185                 break;
 186
 187         case SAA6752HS_COMMAND_RECONFIGURE:
 188                 buf[0] = 0x05;
 189                 break;
 190
 191         case SAA6752HS_COMMAND_SLEEP:
 192                 buf[0] = 0x06;
 193                 break;
 194
 195         case SAA6752HS_COMMAND_RECONFIGURE_FORCE:
 196                 buf[0] = 0x07;
 197                 break;
 198
 199         default:
 200                 return -EINVAL;
 201         }
 202
 203         /* set it and wait for it to be so */
 204         i2c_master_send(client, buf, 1);
 205         timeout = jiffies + HZ * 3;
 206         for (;;) {
 207                 /* get the current status */
 208                 buf[0] = 0x10;
 209                 i2c_master_send(client, buf, 1);
 210                 i2c_master_recv(client, buf, 1);
 211
 212                 if (!(buf[0] & 0x20))
 213                         break;
 214                 if (time_after(jiffies,timeout)) {
 215                         status = -ETIMEDOUT;
 216                         break;
 217                 }
 218
 219                 msleep(10);
 220         }
 221
 222         /* delay a bit to let encoder settle */
 223         msleep(50);
 224
 225         return status;
 226 }
 227
 228
 229 static int saa6752hs_set_bitrate(struct i2c_client* client,
 230                                  struct v4l2_mpeg_compression* params)
 231 {
 232         u8 buf[3];
 233
 234         /* set the bitrate mode */
 235         buf[0] = 0x71;
 236         buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
 237         i2c_master_send(client, buf, 2);
 238
 239         /* set the video bitrate */
 240         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
 241                 /* set the target bitrate */
 242                 buf[0] = 0x80;
 243                 buf[1] = params->vi_bitrate.target >> 8;
 244                 buf[2] = params->vi_bitrate.target & 0xff;
 245                 i2c_master_send(client, buf, 3);
 246
 247                 /* set the max bitrate */
 248                 buf[0] = 0x81;
 249                 buf[1] = params->vi_bitrate.max >> 8;
 250                 buf[2] = params->vi_bitrate.max & 0xff;
 251                 i2c_master_send(client, buf, 3);
 252         } else {
 253                 /* set the target bitrate (no max bitrate for CBR) */
 254                 buf[0] = 0x81;
 255                 buf[1] = params->vi_bitrate.target >> 8;
 256                 buf[2] = params->vi_bitrate.target & 0xff;
 257                 i2c_master_send(client, buf, 3);
 258         }
 259
 260         /* set the audio bitrate */
 261         buf[0] = 0x94;
 262         buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
 263         i2c_master_send(client, buf, 2);
 264
 265         /* set the total bitrate */
 266         buf[0] = 0xb1;
 267         buf[1] = params->st_bitrate.target >> 8;
 268         buf[2] = params->st_bitrate.target & 0xff;
 269         i2c_master_send(client, buf, 3);
 270
 271         return 0;
 272 }
 273
 274 static void saa6752hs_set_subsampling(struct i2c_client* client,
 275                                       struct v4l2_format* f)
 276 {
 277         struct saa6752hs_state *h = i2c_get_clientdata(client);
 278         int dist_352, dist_480, dist_720;
 279
 280         /*
 281           FIXME: translate and round width/height into EMPRESS
 282           subsample type:
 283
 284           type   |   PAL   |  NTSC
 285           ---------------------------
 286           SIF    | 352x288 | 352x240
 287           1/2 D1 | 352x576 | 352x480
 288           2/3 D1 | 480x576 | 480x480
 289           D1     | 720x576 | 720x480
 290         */
 291
 292         dist_352 = abs(f->fmt.pix.width - 352);
 293         dist_480 = abs(f->fmt.pix.width - 480);
 294         dist_720 = abs(f->fmt.pix.width - 720);
 295         if (dist_720 < dist_480) {
 296                 f->fmt.pix.width = 720;
 297                 f->fmt.pix.height = 576;
 298                 h->video_format = SAA6752HS_VF_D1;
 299         }
 300         else if (dist_480 < dist_352) {
 301                 f->fmt.pix.width = 480;
 302                 f->fmt.pix.height = 576;
 303                 h->video_format = SAA6752HS_VF_2_3_D1;
 304         }
 305         else {
 306                 f->fmt.pix.width = 352;
 307                 if (abs(f->fmt.pix.height - 576) <
 308                     abs(f->fmt.pix.height - 288)) {
 309                         f->fmt.pix.height = 576;
 310                         h->video_format = SAA6752HS_VF_1_2_D1;
 311                 }
 312                 else {
 313                         f->fmt.pix.height = 288;
 314                         h->video_format = SAA6752HS_VF_SIF;
 315                 }
 316         }
 317 }
 318
 319
 320 static void saa6752hs_set_params(struct i2c_client* client,
 321                                  struct v4l2_mpeg_compression* params)
 322 {
 323         struct saa6752hs_state *h = i2c_get_clientdata(client);
 324
 325         /* check PIDs */
 326         if (params->ts_pid_pmt <= MPEG_PID_MAX)
 327                 h->params.ts_pid_pmt = params->ts_pid_pmt;
 328         if (params->ts_pid_pcr <= MPEG_PID_MAX)
 329                 h->params.ts_pid_pcr = params->ts_pid_pcr;
 330         if (params->ts_pid_video <= MPEG_PID_MAX)
 331                 h->params.ts_pid_video = params->ts_pid_video;
 332         if (params->ts_pid_audio <= MPEG_PID_MAX)
 333                 h->params.ts_pid_audio = params->ts_pid_audio;
 334
 335         /* check bitrate parameters */
 336         if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
 337             (params->vi_bitrate.mode == V4L2_BITRATE_VBR))
 338                 h->params.vi_bitrate.mode = params->vi_bitrate.mode;
 339         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 340                 h->params.st_bitrate.target = params->st_bitrate.target;
 341         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 342                 h->params.vi_bitrate.target = params->vi_bitrate.target;
 343         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
 344                 h->params.vi_bitrate.max = params->vi_bitrate.max;
 345         if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
 346                 h->params.au_bitrate.target = params->au_bitrate.target;
 347
 348         /* aspect ratio */
 349         if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
 350             params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9)
 351                 h->params.vi_aspect_ratio = params->vi_aspect_ratio;
 352
 353         /* range checks */
 354         if (h->params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
 355                 h->params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
 356         if (h->params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
 357                 h->params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
 358         if (h->params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
 359                 h->params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
 360         if (h->params.au_bitrate.target <= 256)
 361                 h->params.au_bitrate.target = 256;
 362         else
 363                 h->params.au_bitrate.target = 384;
 364 }
 365
 366 static int saa6752hs_init(struct i2c_client* client)
 367 {
 368         unsigned char buf[9], buf2[4];
 369         struct saa6752hs_state *h;
 370         u32 crc;
 371         unsigned char localPAT[256];
 372         unsigned char localPMT[256];
 373
 374         h = i2c_get_clientdata(client);
 375
 376         /* Set video format - must be done first as it resets other settings */
 377         buf[0] = 0x41;
 378         buf[1] = h->video_format;
 379         i2c_master_send(client, buf, 2);
 380
 381         /* Set number of lines in input signal */
 382         buf[0] = 0x40;
 383         buf[1] = 0x00;
 384         if (h->standard & V4L2_STD_525_60)
 385                 buf[1] = 0x01;
 386         i2c_master_send(client, buf, 2);
 387
 388         /* set bitrate */
 389         saa6752hs_set_bitrate(client, &h->params);
 390
 391         /* Set GOP structure {3, 13} */
 392         buf[0] = 0x72;
 393         buf[1] = 0x03;
 394         buf[2] = 0x0D;
 395         i2c_master_send(client,buf,3);
 396
 397         /* Set minimum Q-scale {4} */
 398         buf[0] = 0x82;
 399         buf[1] = 0x04;
 400         i2c_master_send(client,buf,2);
 401
 402         /* Set maximum Q-scale {12} */
 403         buf[0] = 0x83;
 404         buf[1] = 0x0C;
 405         i2c_master_send(client,buf,2);
 406
 407         /* Set Output Protocol */
 408         buf[0] = 0xD0;
 409         buf[1] = 0x81;
 410         i2c_master_send(client,buf,2);
 411
 412         /* Set video output stream format {TS} */
 413         buf[0] = 0xB0;
 414         buf[1] = 0x05;
 415         i2c_master_send(client,buf,2);
 416
 417         /* compute PAT */
 418         memcpy(localPAT, PAT, sizeof(PAT));
 419         localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 420         localPAT[18] = h->params.ts_pid_pmt & 0xff;
 421         crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
 422         localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
 423         localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
 424         localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
 425         localPAT[sizeof(PAT) - 1] = crc & 0xFF;
 426
 427         /* compute PMT */
 428         memcpy(localPMT, PMT, sizeof(PMT));
 429         localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 430         localPMT[4] = h->params.ts_pid_pmt & 0xff;
 431         localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
 432         localPMT[16] = h->params.ts_pid_pcr & 0xFF;
 433         localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
 434         localPMT[21] = h->params.ts_pid_video & 0xFF;
 435         localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
 436         localPMT[26] = h->params.ts_pid_audio & 0xFF;
 437         crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
 438         localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
 439         localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
 440         localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
 441         localPMT[sizeof(PMT) - 1] = crc & 0xFF;
 442
 443         /* Set Audio PID */
 444         buf[0] = 0xC1;
 445         buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
 446         buf[2] = h->params.ts_pid_audio & 0xFF;
 447         i2c_master_send(client,buf,3);
 448
 449         /* Set Video PID */
 450         buf[0] = 0xC0;
 451         buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
 452         buf[2] = h->params.ts_pid_video & 0xFF;
 453         i2c_master_send(client,buf,3);
 454
 455         /* Set PCR PID */
 456         buf[0] = 0xC4;
 457         buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
 458         buf[2] = h->params.ts_pid_pcr & 0xFF;
 459         i2c_master_send(client,buf,3);
 460
 461         /* Send SI tables */
 462         i2c_master_send(client,localPAT,sizeof(PAT));
 463         i2c_master_send(client,localPMT,sizeof(PMT));
 464
 465         /* mute then unmute audio. This removes buzzing artefacts */
 466         buf[0] = 0xa4;
 467         buf[1] = 1;
 468         i2c_master_send(client, buf, 2);
 469         buf[1] = 0;
 470         i2c_master_send(client, buf, 2);
 471
 472         /* start it going */
 473         saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
 474
 475         /* readout current state */
 476         buf[0] = 0xE1;
 477         buf[1] = 0xA7;
 478         buf[2] = 0xFE;
 479         buf[3] = 0x82;
 480         buf[4] = 0xB0;
 481         i2c_master_send(client, buf, 5);
 482         i2c_master_recv(client, buf2, 4);
 483
 484         /* change aspect ratio */
 485         buf[0] = 0xE0;
 486         buf[1] = 0xA7;
 487         buf[2] = 0xFE;
 488         buf[3] = 0x82;
 489         buf[4] = 0xB0;
 490         buf[5] = buf2[0];
 491         switch(h->params.vi_aspect_ratio) {
 492         case V4L2_MPEG_ASPECT_16_9:
 493                 buf[6] = buf2[1] | 0x40;
 494                 break;
 495         case V4L2_MPEG_ASPECT_4_3:
 496         default:
 497                 buf[6] = buf2[1] & 0xBF;
 498                 break;
 499                 break;
 500         }
 501         buf[7] = buf2[2];
 502         buf[8] = buf2[3];
 503         i2c_master_send(client, buf, 9);
 504
 505         return 0;
 506 }
 507
 508 static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
 509 {
 510         struct saa6752hs_state *h;
 511
 512         printk("saa6752hs: chip found @ 0x%x\n", addr<<1);
 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         return 0;
 529 }
 530
 531 static int saa6752hs_probe(struct i2c_adapter *adap)
 532 {
 533         if (adap->class & I2C_CLASS_TV_ANALOG)
 534                 return i2c_probe(adap, &addr_data, saa6752hs_attach);
 535         return 0;
 536 }
 537
 538 static int saa6752hs_detach(struct i2c_client *client)
 539 {
 540         struct saa6752hs_state *h;
 541
 542         h = i2c_get_clientdata(client);
 543         i2c_detach_client(client);
 544         kfree(h);
 545         return 0;
 546 }
 547
 548 static int
 549 saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
 550 {
 551         struct saa6752hs_state *h = i2c_get_clientdata(client);
 552         struct v4l2_mpeg_compression *params = arg;
 553         int err = 0;
 554
 555         switch (cmd) {
 556         case VIDIOC_S_MPEGCOMP:
 557                 if (NULL == params) {
 558                         /* apply settings and start encoder */
 559                         saa6752hs_init(client);
 560                         break;
 561                 }
 562                 saa6752hs_set_params(client, params);
 563                 /* fall through */
 564         case VIDIOC_G_MPEGCOMP:
 565                 *params = h->params;
 566                 break;
 567         case VIDIOC_G_FMT:
 568         {
 569            struct v4l2_format *f = arg;
 570
 571            if (h->video_format == SAA6752HS_VF_UNKNOWN)
 572                    h->video_format = SAA6752HS_VF_D1;
 573            f->fmt.pix.width =
 574                    v4l2_format_table[h->video_format].fmt.pix.width;
 575            f->fmt.pix.height =
 576                    v4l2_format_table[h->video_format].fmt.pix.height;
 577            break ;
 578         }
 579         case VIDIOC_S_FMT:
 580         {
 581                 struct v4l2_format *f = arg;
 582
 583                 saa6752hs_set_subsampling(client, f);
 584                 break;
 585         }
 586         case VIDIOC_S_STD:
 587                 h->standard = *((v4l2_std_id *) arg);
 588                 break;
 589         default:
 590                 /* nothing */
 591                 break;
 592         }
 593
 594         return err;
 595 }
 596
 597 /* ----------------------------------------------------------------------- */
 598
 599 static struct i2c_driver driver = {
 600         .owner          = THIS_MODULE,
 601         .name           = "i2c saa6752hs MPEG encoder",
 602         .id             = I2C_DRIVERID_SAA6752HS,
 603         .attach_adapter = saa6752hs_probe,
 604         .detach_client  = saa6752hs_detach,
 605         .command        = saa6752hs_command,
 606 };
 607
 608 static struct i2c_client client_template =
 609 {
 610         .name       = "saa6752hs",
 611         .flags      = I2C_CLIENT_ALLOW_USE,
 612         .driver     = &driver,
 613 };
 614
 615 static int __init saa6752hs_init_module(void)
 616 {
 617         return i2c_add_driver(&driver);
 618 }
 619
 620 static void __exit saa6752hs_cleanup_module(void)
 621 {
 622         i2c_del_driver(&driver);
 623 }
 624
 625 module_init(saa6752hs_init_module);
 626 module_exit(saa6752hs_cleanup_module);
 627
 628 /*
 629  * Overrides for Emacs so that we follow Linus's tabbing style.
 630  * ---------------------------------------------------------------------------
 631  * Local variables:
 632  * c-basic-offset: 8
 633  * End:
 634  */