drivers/media/video/tuner-core.c

   1 /*
   2  *
   3  * i2c tv tuner chip device driver
   4  * core core, i.e. kernel interfaces, registering and so on
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/moduleparam.h>
   9 #include <linux/kernel.h>
  10 #include <linux/sched.h>
  11 #include <linux/string.h>
  12 #include <linux/timer.h>
  13 #include <linux/delay.h>
  14 #include <linux/errno.h>
  15 #include <linux/slab.h>
  16 #include <linux/poll.h>
  17 #include <linux/i2c.h>
  18 #include <linux/types.h>
  19 #include <linux/videodev.h>
  20 #include <linux/init.h>
  21
  22 #include <media/tuner.h>
  23 #include <media/audiochip.h>
  24
  25 #include "msp3400.h"
  26
  27 #define UNSET (-1U)
  28
  29 /* standard i2c insmod options */
  30 static unsigned short normal_i2c[] = {
  31         0x4b,                   /* tda8290 */
  32         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
  33         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  34         I2C_CLIENT_END
  35 };
  36
  37 I2C_CLIENT_INSMOD;
  38
  39 /* insmod options used at init time => read/only */
  40 static unsigned int addr = 0;
  41 module_param(addr, int, 0444);
  42
  43 static unsigned int no_autodetect = 0;
  44 module_param(no_autodetect, int, 0444);
  45
  46 static unsigned int show_i2c = 0;
  47 module_param(show_i2c, int, 0444);
  48
  49 /* insmod options used at runtime => read/write */
  50 unsigned int tuner_debug = 0;
  51 module_param(tuner_debug, int, 0644);
  52
  53 static unsigned int tv_range[2] = { 44, 958 };
  54 static unsigned int radio_range[2] = { 65, 108 };
  55
  56 module_param_array(tv_range, int, NULL, 0644);
  57 module_param_array(radio_range, int, NULL, 0644);
  58
  59 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
  60 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
  61 MODULE_LICENSE("GPL");
  62
  63 static struct i2c_driver driver;
  64 static struct i2c_client client_template;
  65
  66 /* ---------------------------------------------------------------------- */
  67
  68 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
  69 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
  70 {
  71         struct tuner *t = i2c_get_clientdata(c);
  72
  73         if (t->type == UNSET) {
  74                 tuner_warn ("tuner type not set\n");
  75                 return;
  76         }
  77         if (NULL == t->tv_freq) {
  78                 tuner_warn ("Tuner has no way to set tv freq\n");
  79                 return;
  80         }
  81         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
  82                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
  83                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
  84                            tv_range[1]);
  85         }
  86         t->tv_freq(c, freq);
  87 }
  88
  89 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
  90 {
  91         struct tuner *t = i2c_get_clientdata(c);
  92
  93         if (t->type == UNSET) {
  94                 tuner_warn ("tuner type not set\n");
  95                 return;
  96         }
  97         if (NULL == t->radio_freq) {
  98                 tuner_warn ("tuner has no way to set radio frequency\n");
  99                 return;
 100         }
 101         if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
 102                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
 103                            freq / 16000, freq % 16000 * 100 / 16000,
 104                            radio_range[0], radio_range[1]);
 105         }
 106
 107         t->radio_freq(c, freq);
 108         return;
 109 }
 110
 111 static void set_freq(struct i2c_client *c, unsigned long freq)
 112 {
 113         struct tuner *t = i2c_get_clientdata(c);
 114
 115         switch (t->mode) {
 116         case V4L2_TUNER_RADIO:
 117                 tuner_dbg("radio freq set to %lu.%02lu\n",
 118                           freq / 16000, freq % 16000 * 100 / 16000);
 119                 set_radio_freq(c, freq);
 120                 break;
 121         case V4L2_TUNER_ANALOG_TV:
 122         case V4L2_TUNER_DIGITAL_TV:
 123                 tuner_dbg("tv freq set to %lu.%02lu\n",
 124                           freq / 16, freq % 16 * 100 / 16);
 125                 set_tv_freq(c, freq);
 126                 break;
 127         }
 128         t->freq = freq;
 129 }
 130
 131 static void set_type(struct i2c_client *c, unsigned int type,
 132                      unsigned int new_mode_mask)
 133 {
 134         struct tuner *t = i2c_get_clientdata(c);
 135         unsigned char buffer[4];
 136
 137         if (type == UNSET || type == TUNER_ABSENT) {
 138                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
 139                 return;
 140         }
 141
 142         if (type >= tuner_count) {
 143                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
 144                 return;
 145         }
 146
 147         /* This code detects calls by card attach_inform */
 148         if (NULL == t->i2c.dev.driver) {
 149                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
 150
 151                 t->type=type;
 152                 return;
 153         }
 154
 155         t->type = type;
 156
 157         switch (t->type) {
 158         case TUNER_MT2032:
 159                 microtune_init(c);
 160                 break;
 161         case TUNER_PHILIPS_TDA8290:
 162                 tda8290_init(c);
 163                 break;
 164         case TUNER_TEA5767:
 165                 if (tea5767_tuner_init(c) == EINVAL) {
 166                         t->type = TUNER_ABSENT;
 167                         t->mode_mask = T_UNINITIALIZED;
 168                         return;
 169                 }
 170                 t->mode_mask = T_RADIO;
 171                 break;
 172         case TUNER_PHILIPS_FMD1216ME_MK3:
 173                 buffer[0] = 0x0b;
 174                 buffer[1] = 0xdc;
 175                 buffer[2] = 0x9c;
 176                 buffer[3] = 0x60;
 177                 i2c_master_send(c, buffer, 4);
 178                 mdelay(1);
 179                 buffer[2] = 0x86;
 180                 buffer[3] = 0x54;
 181                 i2c_master_send(c, buffer, 4);
 182                 default_tuner_init(c);
 183                 break;
 184         case TUNER_LG_TDVS_H062F:
 185                 /* Set the Auxiliary Byte. */
 186                 buffer[2] &= ~0x20;
 187                 buffer[2] |= 0x18;
 188                 buffer[3] = 0x20;
 189                 i2c_master_send(c, buffer, 4);
 190                 default_tuner_init(c);
 191                 break;
 192         default:
 193                 default_tuner_init(c);
 194                 break;
 195         }
 196
 197         if (t->mode_mask == T_UNINITIALIZED)
 198                 t->mode_mask = new_mode_mask;
 199
 200         set_freq(c, t->freq);
 201         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 202                   c->adapter->name, c->driver->name, c->addr << 1, type,
 203                   t->mode_mask);
 204 }
 205
 206 /*
 207  * This function apply tuner config to tuner specified
 208  * by tun_setup structure. I addr is unset, then admin status
 209  * and tun addr status is more precise then current status,
 210  * it's applied. Otherwise status and type are applied only to
 211  * tuner with exactly the same addr.
 212 */
 213
 214 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 215 {
 216         struct tuner *t = i2c_get_clientdata(c);
 217
 218         if ((tun_setup->addr == ADDR_UNSET &&
 219                 (t->mode_mask & tun_setup->mode_mask)) ||
 220                 tun_setup->addr == c->addr) {
 221                         set_type(c, tun_setup->type, tun_setup->mode_mask);
 222         }
 223 }
 224
 225 static inline int check_mode(struct tuner *t, char *cmd)
 226 {
 227         if ((1 << t->mode & t->mode_mask) == 0) {
 228                 return EINVAL;
 229         }
 230
 231         switch (t->mode) {
 232         case V4L2_TUNER_RADIO:
 233                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
 234                 break;
 235         case V4L2_TUNER_ANALOG_TV:
 236                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
 237                 break;
 238         case V4L2_TUNER_DIGITAL_TV:
 239                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
 240                 break;
 241         }
 242         return 0;
 243 }
 244
 245 static char pal[] = "-";
 246 module_param_string(pal, pal, sizeof(pal), 0644);
 247 static char secam[] = "-";
 248 module_param_string(secam, secam, sizeof(secam), 0644);
 249
 250 /* get more precise norm info from insmod option */
 251 static int tuner_fixup_std(struct tuner *t)
 252 {
 253         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 254                 switch (pal[0]) {
 255                 case 'b':
 256                 case 'B':
 257                 case 'g':
 258                 case 'G':
 259                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 260                         t->std = V4L2_STD_PAL_BG;
 261                         break;
 262                 case 'i':
 263                 case 'I':
 264                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 265                         t->std = V4L2_STD_PAL_I;
 266                         break;
 267                 case 'd':
 268                 case 'D':
 269                 case 'k':
 270                 case 'K':
 271                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 272                         t->std = V4L2_STD_PAL_DK;
 273                         break;
 274                 case 'M':
 275                 case 'm':
 276                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 277                         t->std = V4L2_STD_PAL_M;
 278                         break;
 279                 case 'N':
 280                 case 'n':
 281                         tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 282                         t->std = V4L2_STD_PAL_N;
 283                         break;
 284                 case '-':
 285                         /* default parameter, do nothing */
 286                         break;
 287                 default:
 288                         tuner_warn ("pal= argument not recognised\n");
 289                         break;
 290                 }
 291         }
 292         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 293                 switch (secam[0]) {
 294                 case 'd':
 295                 case 'D':
 296                 case 'k':
 297                 case 'K':
 298                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 299                         t->std = V4L2_STD_SECAM_DK;
 300                         break;
 301                 case 'l':
 302                 case 'L':
 303                         tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 304                         t->std = V4L2_STD_SECAM_L;
 305                         break;
 306                 case '-':
 307                         /* default parameter, do nothing */
 308                         break;
 309                 default:
 310                         tuner_warn ("secam= argument not recognised\n");
 311                         break;
 312                 }
 313         }
 314
 315         return 0;
 316 }
 317
 318 /* ---------------------------------------------------------------------- */
 319
 320 /* static var Used only in tuner_attach and tuner_probe */
 321 static unsigned default_mode_mask;
 322
 323 /* During client attach, set_type is called by adapter's attach_inform callback.
 324    set_type must then be completed by tuner_attach.
 325  */
 326 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 327 {
 328         struct tuner *t;
 329
 330         client_template.adapter = adap;
 331         client_template.addr = addr;
 332
 333         t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
 334         if (NULL == t)
 335                 return -ENOMEM;
 336         memset(t, 0, sizeof(struct tuner));
 337         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 338         i2c_set_clientdata(&t->i2c, t);
 339         t->type = UNSET;
 340         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 341         t->audmode = V4L2_TUNER_MODE_STEREO;
 342         t->mode_mask = T_UNINITIALIZED;
 343
 344
 345         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 346
 347         if (show_i2c) {
 348                 unsigned char buffer[16];
 349                 int i,rc;
 350
 351                 memset(buffer, 0, sizeof(buffer));
 352                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 353                 printk("tuner-%04x I2C RECV = ",addr);
 354                 for (i=0;i<rc;i++)
 355                         printk("%02x ",buffer[i]);
 356                 printk("\n");
 357         }
 358         /* TEA5767 autodetection code - only for addr = 0xc0 */
 359         if (!no_autodetect) {
 360                 if (addr == 0x60) {
 361                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 362                                 t->type = TUNER_TEA5767;
 363                                 t->mode_mask = T_RADIO;
 364                                 t->mode = T_STANDBY;
 365                                 t->freq = 87.5 * 16; /* Sets freq to FM range */
 366                                 default_mode_mask &= ~T_RADIO;
 367
 368                                 i2c_attach_client (&t->i2c);
 369                                 set_type(&t->i2c,t->type, t->mode_mask);
 370                                 return 0;
 371                         }
 372                 }
 373         }
 374
 375         /* Initializes only the first adapter found */
 376         if (default_mode_mask != T_UNINITIALIZED) {
 377                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 378                 t->mode_mask = default_mode_mask;
 379                 t->freq = 400 * 16; /* Sets freq to VHF High */
 380                 default_mode_mask = T_UNINITIALIZED;
 381         }
 382
 383         /* Should be just before return */
 384         i2c_attach_client (&t->i2c);
 385         set_type (&t->i2c,t->type, t->mode_mask);
 386         return 0;
 387 }
 388
 389 static int tuner_probe(struct i2c_adapter *adap)
 390 {
 391         if (0 != addr) {
 392                 normal_i2c[0] = addr;
 393                 normal_i2c[1] = I2C_CLIENT_END;
 394         }
 395
 396         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 397
 398         if (adap->class & I2C_CLASS_TV_ANALOG)
 399                 return i2c_probe(adap, &addr_data, tuner_attach);
 400         return 0;
 401 }
 402
 403 static int tuner_detach(struct i2c_client *client)
 404 {
 405         struct tuner *t = i2c_get_clientdata(client);
 406         int err;
 407
 408         err = i2c_detach_client(&t->i2c);
 409         if (err) {
 410                 tuner_warn
 411                     ("Client deregistration failed, client not detached.\n");
 412                 return err;
 413         }
 414
 415         kfree(t);
 416         return 0;
 417 }
 418
 419 /*
 420  * Switch tuner to other mode. If tuner support both tv and radio,
 421  * set another frequency to some value (This is needed for some pal
 422  * tuners to avoid locking). Otherwise, just put second tuner in
 423  * standby mode.
 424  */
 425
 426 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 427 {
 428         if (mode == t->mode)
 429                 return 0;
 430
 431         t->mode = mode;
 432
 433         if (check_mode(t, cmd) == EINVAL) {
 434                 t->mode = T_STANDBY;
 435                 if (t->standby)
 436                         t->standby (client);
 437                 return EINVAL;
 438         }
 439         return 0;
 440 }
 441
 442 #define switch_v4l2()   if (!t->using_v4l2) \
 443                             tuner_dbg("switching to v4l2\n"); \
 444                         t->using_v4l2 = 1;
 445
 446 static inline int check_v4l2(struct tuner *t)
 447 {
 448         if (t->using_v4l2) {
 449                 tuner_dbg ("ignore v4l1 call\n");
 450                 return EINVAL;
 451         }
 452         return 0;
 453 }
 454
 455 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 456 {
 457         struct tuner *t = i2c_get_clientdata(client);
 458         unsigned int *iarg = (int *)arg;
 459
 460         switch (cmd) {
 461         /* --- configuration --- */
 462         case TUNER_SET_TYPE_ADDR:
 463                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 464                                 ((struct tuner_setup *)arg)->type,
 465                                 ((struct tuner_setup *)arg)->addr,
 466                                 ((struct tuner_setup *)arg)->mode_mask);
 467
 468                 set_addr(client, (struct tuner_setup *)arg);
 469                 break;
 470         case AUDC_SET_RADIO:
 471                 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
 472                 break;
 473         case TUNER_SET_STANDBY:
 474                 {
 475                         if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 476                                 return 0;
 477                         if (t->standby)
 478                                 t->standby (client);
 479                         break;
 480                 }
 481         case AUDC_CONFIG_PINNACLE:
 482                 if (check_mode(t, "AUDC_CONFIG_PINNACLE") == EINVAL)
 483                         return 0;
 484                 switch (*iarg) {
 485                 case 2:
 486                         tuner_dbg("pinnacle pal\n");
 487                         t->radio_if2 = 33300 * 1000;
 488                         break;
 489                 case 3:
 490                         tuner_dbg("pinnacle ntsc\n");
 491                         t->radio_if2 = 41300 * 1000;
 492                         break;
 493                 }
 494                 break;
 495         case VIDIOCSAUDIO:
 496                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 497                         return 0;
 498                 if (check_v4l2(t) == EINVAL)
 499                         return 0;
 500
 501                 /* Should be implemented, since bttv calls it */
 502                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 503
 504                 break;
 505         case MSP_SET_MATRIX:
 506         case TDA9887_SET_CONFIG:
 507                 break;
 508         /* --- v4l ioctls --- */
 509         /* take care: bttv does userspace copying, we'll get a
 510            kernel pointer here... */
 511         case VIDIOCSCHAN:
 512                 {
 513                         static const v4l2_std_id map[] = {
 514                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 515                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 516                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 517                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 518                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 519                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 520                         };
 521                         struct video_channel *vc = arg;
 522
 523                         if (check_v4l2(t) == EINVAL)
 524                                 return 0;
 525
 526                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 527                                 return 0;
 528
 529                         if (vc->norm < ARRAY_SIZE(map))
 530                                 t->std = map[vc->norm];
 531                         tuner_fixup_std(t);
 532                         if (t->freq)
 533                                 set_tv_freq(client, t->freq);
 534                         return 0;
 535                 }
 536         case VIDIOCSFREQ:
 537                 {
 538                         unsigned long *v = arg;
 539
 540                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 541                                 return 0;
 542                         if (check_v4l2(t) == EINVAL)
 543                                 return 0;
 544
 545                         set_freq(client, *v);
 546                         return 0;
 547                 }
 548         case VIDIOCGTUNER:
 549                 {
 550                         struct video_tuner *vt = arg;
 551
 552                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 553                                 return 0;
 554                         if (check_v4l2(t) == EINVAL)
 555                                 return 0;
 556
 557                         if (V4L2_TUNER_RADIO == t->mode) {
 558                                 if (t->has_signal)
 559                                         vt->signal = t->has_signal(client);
 560                                 if (t->is_stereo) {
 561                                         if (t->is_stereo(client))
 562                                                 vt->flags |=
 563                                                     VIDEO_TUNER_STEREO_ON;
 564                                         else
 565                                                 vt->flags &=
 566                                                     ~VIDEO_TUNER_STEREO_ON;
 567                                 }
 568                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 569
 570                                 vt->rangelow = radio_range[0] * 16000;
 571                                 vt->rangehigh = radio_range[1] * 16000;
 572
 573                         } else {
 574                                 vt->rangelow = tv_range[0] * 16;
 575                                 vt->rangehigh = tv_range[1] * 16;
 576                         }
 577
 578                         return 0;
 579                 }
 580         case VIDIOCGAUDIO:
 581                 {
 582                         struct video_audio *va = arg;
 583
 584                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 585                                 return 0;
 586                         if (check_v4l2(t) == EINVAL)
 587                                 return 0;
 588
 589                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 590                                 va->mode = t->is_stereo(client)
 591                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 592                         return 0;
 593                 }
 594
 595         case VIDIOC_S_STD:
 596                 {
 597                         v4l2_std_id *id = arg;
 598
 599                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 600                                         == EINVAL)
 601                                 return 0;
 602
 603                         switch_v4l2();
 604
 605                         t->std = *id;
 606                         tuner_fixup_std(t);
 607                         if (t->freq)
 608                                 set_freq(client, t->freq);
 609                         break;
 610                 }
 611         case VIDIOC_S_FREQUENCY:
 612                 {
 613                         struct v4l2_frequency *f = arg;
 614
 615                         t->freq = f->frequency;
 616                         switch_v4l2();
 617                         if (V4L2_TUNER_RADIO == f->type &&
 618                             V4L2_TUNER_RADIO != t->mode) {
 619                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 620                                             == EINVAL)
 621                                         return 0;
 622                         }
 623                         set_freq(client,t->freq);
 624
 625                         break;
 626                 }
 627         case VIDIOC_G_FREQUENCY:
 628                 {
 629                         struct v4l2_frequency *f = arg;
 630
 631                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 632                                 return 0;
 633                         switch_v4l2();
 634                         f->type = t->mode;
 635                         f->frequency = t->freq;
 636                         break;
 637                 }
 638         case VIDIOC_G_TUNER:
 639                 {
 640                         struct v4l2_tuner *tuner = arg;
 641
 642                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 643                                 return 0;
 644                         switch_v4l2();
 645
 646                         if (V4L2_TUNER_RADIO == t->mode) {
 647
 648                                 if (t->has_signal)
 649                                         tuner->signal = t->has_signal(client);
 650
 651                                 if (t->is_stereo) {
 652                                         if (t->is_stereo(client)) {
 653                                                 tuner->rxsubchans =
 654                                                     V4L2_TUNER_SUB_STEREO |
 655                                                     V4L2_TUNER_SUB_MONO;
 656                                         } else {
 657                                                 tuner->rxsubchans =
 658                                                     V4L2_TUNER_SUB_MONO;
 659                                         }
 660                                 }
 661
 662                                 tuner->capability |=
 663                                     V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 664
 665                                 tuner->audmode = t->audmode;
 666
 667                                 tuner->rangelow = radio_range[0] * 16000;
 668                                 tuner->rangehigh = radio_range[1] * 16000;
 669                         } else {
 670                                 tuner->rangelow = tv_range[0] * 16;
 671                                 tuner->rangehigh = tv_range[1] * 16;
 672                         }
 673                         break;
 674                 }
 675         case VIDIOC_S_TUNER:
 676                 {
 677                         struct v4l2_tuner *tuner = arg;
 678
 679                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 680                                 return 0;
 681
 682                         switch_v4l2();
 683
 684                         if (V4L2_TUNER_RADIO == t->mode) {
 685                                 t->audmode = tuner->audmode;
 686                                 set_radio_freq(client, t->freq);
 687                         }
 688                         break;
 689                 }
 690         default:
 691                 tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp=0x%02x,nr=%d,sz=%d)\n",
 692                                          cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
 693                                         _IOC_NR(cmd), _IOC_SIZE(cmd));
 694                 break;
 695         }
 696
 697         return 0;
 698 }
 699
 700 static int tuner_suspend(struct device *dev, pm_message_t state, u32 level)
 701 {
 702         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 703         struct tuner *t = i2c_get_clientdata (c);
 704
 705         tuner_dbg ("suspend\n");
 706         /* FIXME: power down ??? */
 707         return 0;
 708 }
 709
 710 static int tuner_resume(struct device *dev, u32 level)
 711 {
 712         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 713         struct tuner *t = i2c_get_clientdata (c);
 714
 715         tuner_dbg ("resume\n");
 716         if (t->freq)
 717                 set_freq(c, t->freq);
 718         return 0;
 719 }
 720
 721 /* ----------------------------------------------------------------------- */
 722
 723 static struct i2c_driver driver = {
 724         .owner = THIS_MODULE,
 725         .name = "tuner",
 726         .id = I2C_DRIVERID_TUNER,
 727         .flags = I2C_DF_NOTIFY,
 728         .attach_adapter = tuner_probe,
 729         .detach_client = tuner_detach,
 730         .command = tuner_command,
 731         .driver = {
 732                    .suspend = tuner_suspend,
 733                    .resume = tuner_resume,
 734                    },
 735 };
 736 static struct i2c_client client_template = {
 737         .name = "(tuner unset)",
 738         .flags = I2C_CLIENT_ALLOW_USE,
 739         .driver = &driver,
 740 };
 741
 742 static int __init tuner_init_module(void)
 743 {
 744         return i2c_add_driver(&driver);
 745 }
 746
 747 static void __exit tuner_cleanup_module(void)
 748 {
 749         i2c_del_driver(&driver);
 750 }
 751
 752 module_init(tuner_init_module);
 753 module_exit(tuner_cleanup_module);
 754
 755 /*
 756  * Overrides for Emacs so that we follow Linus's tabbing style.
 757  * ---------------------------------------------------------------------------
 758  * Local variables:
 759  * c-basic-offset: 8
 760  * End:
 761  */