git.oblomov.eu Git - linux-2.6/blob - 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 #include <media/id.h>
  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 };
  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                 // wait a bit
 220                 msleep(10);
 221         }
 222
 223         // delay a bit to let encoder settle
 224         msleep(50);
 225
 226         // done
 227         return status;
 228 }
 229
 230
 231 static int saa6752hs_set_bitrate(struct i2c_client* client,
 232                                  struct v4l2_mpeg_compression* params)
 233 {
 234         u8 buf[3];
 235
 236         // set the bitrate mode
 237         buf[0] = 0x71;
 238         buf[1] = (params->vi_bitrate.mode == V4L2_BITRATE_VBR) ? 0 : 1;
 239         i2c_master_send(client, buf, 2);
 240
 241         // set the video bitrate
 242         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR) {
 243                 // set the target bitrate
 244                 buf[0] = 0x80;
 245                 buf[1] = params->vi_bitrate.target >> 8;
 246                 buf[2] = params->vi_bitrate.target & 0xff;
 247                 i2c_master_send(client, buf, 3);
 248
 249                 // set the max bitrate
 250                 buf[0] = 0x81;
 251                 buf[1] = params->vi_bitrate.max >> 8;
 252                 buf[2] = params->vi_bitrate.max & 0xff;
 253                 i2c_master_send(client, buf, 3);
 254         } else {
 255                 // set the target bitrate (no max bitrate for CBR)
 256                 buf[0] = 0x81;
 257                 buf[1] = params->vi_bitrate.target >> 8;
 258                 buf[2] = params->vi_bitrate.target & 0xff;
 259                 i2c_master_send(client, buf, 3);
 260         }
 261
 262         // set the audio bitrate
 263         buf[0] = 0x94;
 264         buf[1] = (256 == params->au_bitrate.target) ? 0 : 1;
 265         i2c_master_send(client, buf, 2);
 266
 267         // set the total bitrate
 268         buf[0] = 0xb1;
 269         buf[1] = params->st_bitrate.target >> 8;
 270         buf[2] = params->st_bitrate.target & 0xff;
 271         i2c_master_send(client, buf, 3);
 272
 273         // return success
 274         return 0;
 275 }
 276
 277 static void saa6752hs_set_subsampling(struct i2c_client* client,
 278                                       struct v4l2_format* f)
 279 {
 280         struct saa6752hs_state *h = i2c_get_clientdata(client);
 281         int dist_352, dist_480, dist_720;
 282
 283         /*
 284           FIXME: translate and round width/height into EMPRESS
 285           subsample type:
 286
 287           type   |   PAL   |  NTSC
 288           ---------------------------
 289           SIF    | 352x288 | 352x240
 290           1/2 D1 | 352x576 | 352x480
 291           2/3 D1 | 480x576 | 480x480
 292           D1     | 720x576 | 720x480
 293         */
 294
 295         dist_352 = abs(f->fmt.pix.width - 352);
 296         dist_480 = abs(f->fmt.pix.width - 480);
 297         dist_720 = abs(f->fmt.pix.width - 720);
 298         if (dist_720 < dist_480) {
 299                 f->fmt.pix.width = 720;
 300                 f->fmt.pix.height = 576;
 301                 h->video_format = SAA6752HS_VF_D1;
 302         }
 303         else if (dist_480 < dist_352) {
 304                 f->fmt.pix.width = 480;
 305                 f->fmt.pix.height = 576;
 306                 h->video_format = SAA6752HS_VF_2_3_D1;
 307         }
 308         else {
 309                 f->fmt.pix.width = 352;
 310                 if (abs(f->fmt.pix.height - 576) <
 311                     abs(f->fmt.pix.height - 288)) {
 312                         f->fmt.pix.height = 576;
 313                         h->video_format = SAA6752HS_VF_1_2_D1;
 314                 }
 315                 else {
 316                         f->fmt.pix.height = 288;
 317                         h->video_format = SAA6752HS_VF_SIF;
 318                 }
 319         }
 320 }
 321
 322
 323 static void saa6752hs_set_params(struct i2c_client* client,
 324                                  struct v4l2_mpeg_compression* params)
 325 {
 326         struct saa6752hs_state *h = i2c_get_clientdata(client);
 327
 328         /* check PIDs */
 329         if (params->ts_pid_pmt <= MPEG_PID_MAX)
 330                 h->params.ts_pid_pmt = params->ts_pid_pmt;
 331         if (params->ts_pid_pcr <= MPEG_PID_MAX)
 332                 h->params.ts_pid_pcr = params->ts_pid_pcr;
 333         if (params->ts_pid_video <= MPEG_PID_MAX)
 334                 h->params.ts_pid_video = params->ts_pid_video;
 335         if (params->ts_pid_audio <= MPEG_PID_MAX)
 336                 h->params.ts_pid_audio = params->ts_pid_audio;
 337
 338         /* check bitrate parameters */
 339         if ((params->vi_bitrate.mode == V4L2_BITRATE_CBR) ||
 340             (params->vi_bitrate.mode == V4L2_BITRATE_VBR))
 341                 h->params.vi_bitrate.mode = params->vi_bitrate.mode;
 342         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 343                 h->params.st_bitrate.target = params->st_bitrate.target;
 344         if (params->vi_bitrate.mode != V4L2_BITRATE_NONE)
 345                 h->params.vi_bitrate.target = params->vi_bitrate.target;
 346         if (params->vi_bitrate.mode == V4L2_BITRATE_VBR)
 347                 h->params.vi_bitrate.max = params->vi_bitrate.max;
 348         if (params->au_bitrate.mode != V4L2_BITRATE_NONE)
 349                 h->params.au_bitrate.target = params->au_bitrate.target;
 350
 351         /* aspect ratio */
 352         if (params->vi_aspect_ratio == V4L2_MPEG_ASPECT_4_3 ||
 353             params->vi_aspect_ratio == V4L2_MPEG_ASPECT_16_9)
 354                 h->params.vi_aspect_ratio = params->vi_aspect_ratio;
 355
 356         /* range checks */
 357         if (h->params.st_bitrate.target > MPEG_TOTAL_TARGET_BITRATE_MAX)
 358                 h->params.st_bitrate.target = MPEG_TOTAL_TARGET_BITRATE_MAX;
 359         if (h->params.vi_bitrate.target > MPEG_VIDEO_TARGET_BITRATE_MAX)
 360                 h->params.vi_bitrate.target = MPEG_VIDEO_TARGET_BITRATE_MAX;
 361         if (h->params.vi_bitrate.max > MPEG_VIDEO_MAX_BITRATE_MAX)
 362                 h->params.vi_bitrate.max = MPEG_VIDEO_MAX_BITRATE_MAX;
 363         if (h->params.au_bitrate.target <= 256)
 364                 h->params.au_bitrate.target = 256;
 365         else
 366                 h->params.au_bitrate.target = 384;
 367 }
 368
 369 static int saa6752hs_init(struct i2c_client* client)
 370 {
 371         unsigned char buf[9], buf2[4];
 372         struct saa6752hs_state *h;
 373         u32 crc;
 374         unsigned char localPAT[256];
 375         unsigned char localPMT[256];
 376
 377         h = i2c_get_clientdata(client);
 378
 379         // Set video format - must be done first as it resets other settings
 380         buf[0] = 0x41;
 381         buf[1] = h->video_format;
 382         i2c_master_send(client, buf, 2);
 383
 384         // set bitrate
 385         saa6752hs_set_bitrate(client, &h->params);
 386
 387         // Set GOP structure {3, 13}
 388         buf[0] = 0x72;
 389         buf[1] = 0x03;
 390         buf[2] = 0x0D;
 391         i2c_master_send(client,buf,3);
 392
 393         // Set minimum Q-scale {4}
 394         buf[0] = 0x82;
 395         buf[1] = 0x04;
 396         i2c_master_send(client,buf,2);
 397
 398         // Set maximum Q-scale {12}
 399         buf[0] = 0x83;
 400         buf[1] = 0x0C;
 401         i2c_master_send(client,buf,2);
 402
 403         // Set Output Protocol
 404         buf[0] = 0xD0;
 405         buf[1] = 0x81;
 406         i2c_master_send(client,buf,2);
 407
 408         // Set video output stream format {TS}
 409         buf[0] = 0xB0;
 410         buf[1] = 0x05;
 411         i2c_master_send(client,buf,2);
 412
 413         /* compute PAT */
 414         memcpy(localPAT, PAT, sizeof(PAT));
 415         localPAT[17] = 0xe0 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 416         localPAT[18] = h->params.ts_pid_pmt & 0xff;
 417         crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4);
 418         localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF;
 419         localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF;
 420         localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF;
 421         localPAT[sizeof(PAT) - 1] = crc & 0xFF;
 422
 423         /* compute PMT */
 424         memcpy(localPMT, PMT, sizeof(PMT));
 425         localPMT[3] = 0x40 | ((h->params.ts_pid_pmt >> 8) & 0x0f);
 426         localPMT[4] = h->params.ts_pid_pmt & 0xff;
 427         localPMT[15] = 0xE0 | ((h->params.ts_pid_pcr >> 8) & 0x0F);
 428         localPMT[16] = h->params.ts_pid_pcr & 0xFF;
 429         localPMT[20] = 0xE0 | ((h->params.ts_pid_video >> 8) & 0x0F);
 430         localPMT[21] = h->params.ts_pid_video & 0xFF;
 431         localPMT[25] = 0xE0 | ((h->params.ts_pid_audio >> 8) & 0x0F);
 432         localPMT[26] = h->params.ts_pid_audio & 0xFF;
 433         crc = crc32_be(~0, &localPMT[7], sizeof(PMT) - 7 - 4);
 434         localPMT[sizeof(PMT) - 4] = (crc >> 24) & 0xFF;
 435         localPMT[sizeof(PMT) - 3] = (crc >> 16) & 0xFF;
 436         localPMT[sizeof(PMT) - 2] = (crc >> 8) & 0xFF;
 437         localPMT[sizeof(PMT) - 1] = crc & 0xFF;
 438
 439         // Set Audio PID
 440         buf[0] = 0xC1;
 441         buf[1] = (h->params.ts_pid_audio >> 8) & 0xFF;
 442         buf[2] = h->params.ts_pid_audio & 0xFF;
 443         i2c_master_send(client,buf,3);
 444
 445         // Set Video PID
 446         buf[0] = 0xC0;
 447         buf[1] = (h->params.ts_pid_video >> 8) & 0xFF;
 448         buf[2] = h->params.ts_pid_video & 0xFF;
 449         i2c_master_send(client,buf,3);
 450
 451         // Set PCR PID
 452         buf[0] = 0xC4;
 453         buf[1] = (h->params.ts_pid_pcr >> 8) & 0xFF;
 454         buf[2] = h->params.ts_pid_pcr & 0xFF;
 455         i2c_master_send(client,buf,3);
 456
 457         // Send SI tables
 458         i2c_master_send(client,localPAT,sizeof(PAT));
 459         i2c_master_send(client,localPMT,sizeof(PMT));
 460
 461         // mute then unmute audio. This removes buzzing artefacts
 462         buf[0] = 0xa4;
 463         buf[1] = 1;
 464         i2c_master_send(client, buf, 2);
 465         buf[1] = 0;
 466         i2c_master_send(client, buf, 2);
 467
 468         // start it going
 469         saa6752hs_chip_command(client, SAA6752HS_COMMAND_START);
 470
 471         // readout current state
 472         buf[0] = 0xE1;
 473         buf[1] = 0xA7;
 474         buf[2] = 0xFE;
 475         buf[3] = 0x82;
 476         buf[4] = 0xB0;
 477         i2c_master_send(client, buf, 5);
 478         i2c_master_recv(client, buf2, 4);
 479
 480         // change aspect ratio
 481         buf[0] = 0xE0;
 482         buf[1] = 0xA7;
 483         buf[2] = 0xFE;
 484         buf[3] = 0x82;
 485         buf[4] = 0xB0;
 486         buf[5] = buf2[0];
 487         switch(h->params.vi_aspect_ratio) {
 488         case V4L2_MPEG_ASPECT_16_9:
 489                 buf[6] = buf2[1] | 0x40;
 490                 break;
 491         case V4L2_MPEG_ASPECT_4_3:
 492         default:
 493                 buf[6] = buf2[1] & 0xBF;
 494                 break;
 495                 break;
 496         }
 497         buf[7] = buf2[2];
 498         buf[8] = buf2[3];
 499         i2c_master_send(client, buf, 9);
 500
 501         // return success
 502         return 0;
 503 }
 504
 505 static int saa6752hs_attach(struct i2c_adapter *adap, int addr, int kind)
 506 {
 507         struct saa6752hs_state *h;
 508
 509         printk("saa6752hs: chip found @ 0x%x\n", addr<<1);
 510
 511         if (NULL == (h = kmalloc(sizeof(*h), GFP_KERNEL)))
 512                 return -ENOMEM;
 513         memset(h,0,sizeof(*h));
 514         h->client = client_template;
 515         h->params = param_defaults;
 516         h->client.adapter = adap;
 517         h->client.addr = addr;
 518
 519         i2c_set_clientdata(&h->client, h);
 520         i2c_attach_client(&h->client);
 521         return 0;
 522 }
 523
 524 static int saa6752hs_probe(struct i2c_adapter *adap)
 525 {
 526         if (adap->class & I2C_CLASS_TV_ANALOG)
 527                 return i2c_probe(adap, &addr_data, saa6752hs_attach);
 528         return 0;
 529 }
 530
 531 static int saa6752hs_detach(struct i2c_client *client)
 532 {
 533         struct saa6752hs_state *h;
 534
 535         h = i2c_get_clientdata(client);
 536         i2c_detach_client(client);
 537         kfree(h);
 538         return 0;
 539 }
 540
 541 static int
 542 saa6752hs_command(struct i2c_client *client, unsigned int cmd, void *arg)
 543 {
 544         struct saa6752hs_state *h = i2c_get_clientdata(client);
 545         struct v4l2_mpeg_compression *params = arg;
 546         int err = 0;
 547
 548         switch (cmd) {
 549         case VIDIOC_S_MPEGCOMP:
 550                 if (NULL == params) {
 551                         /* apply settings and start encoder */
 552                         saa6752hs_init(client);
 553                         break;
 554                 }
 555                 saa6752hs_set_params(client, params);
 556                 /* fall through */
 557         case VIDIOC_G_MPEGCOMP:
 558                 *params = h->params;
 559                 break;
 560         case VIDIOC_G_FMT:
 561         {
 562            struct v4l2_format *f = arg;
 563
 564            if (h->video_format == SAA6752HS_VF_UNKNOWN)
 565                    h->video_format = SAA6752HS_VF_D1;
 566            f->fmt.pix.width =
 567                    v4l2_format_table[h->video_format].fmt.pix.width;
 568            f->fmt.pix.height =
 569                    v4l2_format_table[h->video_format].fmt.pix.height;
 570            break ;
 571         }
 572         case VIDIOC_S_FMT:
 573         {
 574                 struct v4l2_format *f = arg;
 575
 576                 saa6752hs_set_subsampling(client, f);
 577                 break;
 578         }
 579         default:
 580                 /* nothing */
 581                 break;
 582         }
 583
 584         return err;
 585 }
 586
 587 /* ----------------------------------------------------------------------- */
 588
 589 static struct i2c_driver driver = {
 590         .owner          = THIS_MODULE,
 591         .name           = "i2c saa6752hs MPEG encoder",
 592         .id             = I2C_DRIVERID_SAA6752HS,
 593         .flags          = I2C_DF_NOTIFY,
 594         .attach_adapter = saa6752hs_probe,
 595         .detach_client  = saa6752hs_detach,
 596         .command        = saa6752hs_command,
 597 };
 598
 599 static struct i2c_client client_template =
 600 {
 601         .name       = "saa6752hs",
 602         .flags      = I2C_CLIENT_ALLOW_USE,
 603         .driver     = &driver,
 604 };
 605
 606 static int __init saa6752hs_init_module(void)
 607 {
 608         return i2c_add_driver(&driver);
 609 }
 610
 611 static void __exit saa6752hs_cleanup_module(void)
 612 {
 613         i2c_del_driver(&driver);
 614 }
 615
 616 module_init(saa6752hs_init_module);
 617 module_exit(saa6752hs_cleanup_module);
 618
 619 /*
 620  * Overrides for Emacs so that we follow Linus's tabbing style.
 621  * ---------------------------------------------------------------------------
 622  * Local variables:
 623  * c-basic-offset: 8
 624  * End:
 625  */