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                 }
 285         }
 286         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 287                 switch (secam[0]) {
 288                 case 'd':
 289                 case 'D':
 290                 case 'k':
 291                 case 'K':
 292                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 293                         t->std = V4L2_STD_SECAM_DK;
 294                         break;
 295                 case 'l':
 296                 case 'L':
 297                         tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 298                         t->std = V4L2_STD_SECAM_L;
 299                         break;
 300                 }
 301         }
 302
 303         return 0;
 304 }
 305
 306 /* ---------------------------------------------------------------------- */
 307
 308 /* static var Used only in tuner_attach and tuner_probe */
 309 static unsigned default_mode_mask;
 310
 311 /* During client attach, set_type is called by adapter's attach_inform callback.
 312    set_type must then be completed by tuner_attach.
 313  */
 314 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 315 {
 316         struct tuner *t;
 317
 318         client_template.adapter = adap;
 319         client_template.addr = addr;
 320
 321         t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
 322         if (NULL == t)
 323                 return -ENOMEM;
 324         memset(t, 0, sizeof(struct tuner));
 325         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 326         i2c_set_clientdata(&t->i2c, t);
 327         t->type = UNSET;
 328         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 329         t->audmode = V4L2_TUNER_MODE_STEREO;
 330         t->mode_mask = T_UNINITIALIZED;
 331
 332
 333         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 334
 335         if (show_i2c) {
 336                 unsigned char buffer[16];
 337                 int i,rc;
 338
 339                 memset(buffer, 0, sizeof(buffer));
 340                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 341                 printk("tuner-%04x I2C RECV = ",addr);
 342                 for (i=0;i<rc;i++)
 343                         printk("%02x ",buffer[i]);
 344                 printk("\n");
 345         }
 346         /* TEA5767 autodetection code - only for addr = 0xc0 */
 347         if (!no_autodetect) {
 348                 if (addr == 0x60) {
 349                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 350                                 t->type = TUNER_TEA5767;
 351                                 t->mode_mask = T_RADIO;
 352                                 t->mode = T_STANDBY;
 353                                 t->freq = 87.5 * 16; /* Sets freq to FM range */
 354                                 default_mode_mask &= ~T_RADIO;
 355
 356                                 i2c_attach_client (&t->i2c);
 357                                 set_type(&t->i2c,t->type, t->mode_mask);
 358                                 return 0;
 359                         }
 360                 }
 361         }
 362
 363         /* Initializes only the first adapter found */
 364         if (default_mode_mask != T_UNINITIALIZED) {
 365                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 366                 t->mode_mask = default_mode_mask;
 367                 t->freq = 400 * 16; /* Sets freq to VHF High */
 368                 default_mode_mask = T_UNINITIALIZED;
 369         }
 370
 371         /* Should be just before return */
 372         i2c_attach_client (&t->i2c);
 373         set_type (&t->i2c,t->type, t->mode_mask);
 374         return 0;
 375 }
 376
 377 static int tuner_probe(struct i2c_adapter *adap)
 378 {
 379         if (0 != addr) {
 380                 normal_i2c[0] = addr;
 381                 normal_i2c[1] = I2C_CLIENT_END;
 382         }
 383
 384         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 385
 386         if (adap->class & I2C_CLASS_TV_ANALOG)
 387                 return i2c_probe(adap, &addr_data, tuner_attach);
 388         return 0;
 389 }
 390
 391 static int tuner_detach(struct i2c_client *client)
 392 {
 393         struct tuner *t = i2c_get_clientdata(client);
 394         int err;
 395
 396         err = i2c_detach_client(&t->i2c);
 397         if (err) {
 398                 tuner_warn
 399                     ("Client deregistration failed, client not detached.\n");
 400                 return err;
 401         }
 402
 403         kfree(t);
 404         return 0;
 405 }
 406
 407 /*
 408  * Switch tuner to other mode. If tuner support both tv and radio,
 409  * set another frequency to some value (This is needed for some pal
 410  * tuners to avoid locking). Otherwise, just put second tuner in
 411  * standby mode.
 412  */
 413
 414 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 415 {
 416         if (mode == t->mode)
 417                 return 0;
 418
 419         t->mode = mode;
 420
 421         if (check_mode(t, cmd) == EINVAL) {
 422                 t->mode = T_STANDBY;
 423                 if (t->standby)
 424                         t->standby (client);
 425                 return EINVAL;
 426         }
 427         return 0;
 428 }
 429
 430 #define switch_v4l2()   if (!t->using_v4l2) \
 431                             tuner_dbg("switching to v4l2\n"); \
 432                         t->using_v4l2 = 1;
 433
 434 static inline int check_v4l2(struct tuner *t)
 435 {
 436         if (t->using_v4l2) {
 437                 tuner_dbg ("ignore v4l1 call\n");
 438                 return EINVAL;
 439         }
 440         return 0;
 441 }
 442
 443 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 444 {
 445         struct tuner *t = i2c_get_clientdata(client);
 446         unsigned int *iarg = (int *)arg;
 447
 448         switch (cmd) {
 449         /* --- configuration --- */
 450         case TUNER_SET_TYPE_ADDR:
 451                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 452                                 ((struct tuner_setup *)arg)->type,
 453                                 ((struct tuner_setup *)arg)->addr,
 454                                 ((struct tuner_setup *)arg)->mode_mask);
 455
 456                 set_addr(client, (struct tuner_setup *)arg);
 457                 break;
 458         case AUDC_SET_RADIO:
 459                 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
 460                 break;
 461         case TUNER_SET_STANDBY:
 462                 {
 463                         if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 464                                 return 0;
 465                         if (t->standby)
 466                                 t->standby (client);
 467                         break;
 468                 }
 469         case AUDC_CONFIG_PINNACLE:
 470                 if (check_mode(t, "AUDC_CONFIG_PINNACLE") == EINVAL)
 471                         return 0;
 472                 switch (*iarg) {
 473                 case 2:
 474                         tuner_dbg("pinnacle pal\n");
 475                         t->radio_if2 = 33300 * 1000;
 476                         break;
 477                 case 3:
 478                         tuner_dbg("pinnacle ntsc\n");
 479                         t->radio_if2 = 41300 * 1000;
 480                         break;
 481                 }
 482                 break;
 483         case VIDIOCSAUDIO:
 484                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 485                         return 0;
 486                 if (check_v4l2(t) == EINVAL)
 487                         return 0;
 488
 489                 /* Should be implemented, since bttv calls it */
 490                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 491
 492                 break;
 493         case MSP_SET_MATRIX:
 494         case TDA9887_SET_CONFIG:
 495                 break;
 496         /* --- v4l ioctls --- */
 497         /* take care: bttv does userspace copying, we'll get a
 498            kernel pointer here... */
 499         case VIDIOCSCHAN:
 500                 {
 501                         static const v4l2_std_id map[] = {
 502                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 503                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 504                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 505                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 506                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 507                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 508                         };
 509                         struct video_channel *vc = arg;
 510
 511                         if (check_v4l2(t) == EINVAL)
 512                                 return 0;
 513
 514                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 515                                 return 0;
 516
 517                         if (vc->norm < ARRAY_SIZE(map))
 518                                 t->std = map[vc->norm];
 519                         tuner_fixup_std(t);
 520                         if (t->freq)
 521                                 set_tv_freq(client, t->freq);
 522                         return 0;
 523                 }
 524         case VIDIOCSFREQ:
 525                 {
 526                         unsigned long *v = arg;
 527
 528                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 529                                 return 0;
 530                         if (check_v4l2(t) == EINVAL)
 531                                 return 0;
 532
 533                         set_freq(client, *v);
 534                         return 0;
 535                 }
 536         case VIDIOCGTUNER:
 537                 {
 538                         struct video_tuner *vt = arg;
 539
 540                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 541                                 return 0;
 542                         if (check_v4l2(t) == EINVAL)
 543                                 return 0;
 544
 545                         if (V4L2_TUNER_RADIO == t->mode) {
 546                                 if (t->has_signal)
 547                                         vt->signal = t->has_signal(client);
 548                                 if (t->is_stereo) {
 549                                         if (t->is_stereo(client))
 550                                                 vt->flags |=
 551                                                     VIDEO_TUNER_STEREO_ON;
 552                                         else
 553                                                 vt->flags &=
 554                                                     ~VIDEO_TUNER_STEREO_ON;
 555                                 }
 556                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 557
 558                                 vt->rangelow = radio_range[0] * 16000;
 559                                 vt->rangehigh = radio_range[1] * 16000;
 560
 561                         } else {
 562                                 vt->rangelow = tv_range[0] * 16;
 563                                 vt->rangehigh = tv_range[1] * 16;
 564                         }
 565
 566                         return 0;
 567                 }
 568         case VIDIOCGAUDIO:
 569                 {
 570                         struct video_audio *va = arg;
 571
 572                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 573                                 return 0;
 574                         if (check_v4l2(t) == EINVAL)
 575                                 return 0;
 576
 577                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 578                                 va->mode = t->is_stereo(client)
 579                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 580                         return 0;
 581                 }
 582
 583         case VIDIOC_S_STD:
 584                 {
 585                         v4l2_std_id *id = arg;
 586
 587                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 588                                         == EINVAL)
 589                                 return 0;
 590
 591                         switch_v4l2();
 592
 593                         t->std = *id;
 594                         tuner_fixup_std(t);
 595                         if (t->freq)
 596                                 set_freq(client, t->freq);
 597                         break;
 598                 }
 599         case VIDIOC_S_FREQUENCY:
 600                 {
 601                         struct v4l2_frequency *f = arg;
 602
 603                         t->freq = f->frequency;
 604                         switch_v4l2();
 605                         if (V4L2_TUNER_RADIO == f->type &&
 606                             V4L2_TUNER_RADIO != t->mode) {
 607                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 608                                             == EINVAL)
 609                                         return 0;
 610                         }
 611                         set_freq(client,t->freq);
 612
 613                         break;
 614                 }
 615         case VIDIOC_G_FREQUENCY:
 616                 {
 617                         struct v4l2_frequency *f = arg;
 618
 619                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 620                                 return 0;
 621                         switch_v4l2();
 622                         f->type = t->mode;
 623                         f->frequency = t->freq;
 624                         break;
 625                 }
 626         case VIDIOC_G_TUNER:
 627                 {
 628                         struct v4l2_tuner *tuner = arg;
 629
 630                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 631                                 return 0;
 632                         switch_v4l2();
 633
 634                         if (V4L2_TUNER_RADIO == t->mode) {
 635
 636                                 if (t->has_signal)
 637                                         tuner->signal = t->has_signal(client);
 638
 639                                 if (t->is_stereo) {
 640                                         if (t->is_stereo(client)) {
 641                                                 tuner->rxsubchans =
 642                                                     V4L2_TUNER_SUB_STEREO |
 643                                                     V4L2_TUNER_SUB_MONO;
 644                                         } else {
 645                                                 tuner->rxsubchans =
 646                                                     V4L2_TUNER_SUB_MONO;
 647                                         }
 648                                 }
 649
 650                                 tuner->capability |=
 651                                     V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 652
 653                                 tuner->audmode = t->audmode;
 654
 655                                 tuner->rangelow = radio_range[0] * 16000;
 656                                 tuner->rangehigh = radio_range[1] * 16000;
 657                         } else {
 658                                 tuner->rangelow = tv_range[0] * 16;
 659                                 tuner->rangehigh = tv_range[1] * 16;
 660                         }
 661                         break;
 662                 }
 663         case VIDIOC_S_TUNER:
 664                 {
 665                         struct v4l2_tuner *tuner = arg;
 666
 667                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 668                                 return 0;
 669
 670                         switch_v4l2();
 671
 672                         if (V4L2_TUNER_RADIO == t->mode) {
 673                                 t->audmode = tuner->audmode;
 674                                 set_radio_freq(client, t->freq);
 675                         }
 676                         break;
 677                 }
 678         default:
 679                 tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp=0x%02x,nr=%d,sz=%d)\n",
 680                                          cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
 681                                         _IOC_NR(cmd), _IOC_SIZE(cmd));
 682                 break;
 683         }
 684
 685         return 0;
 686 }
 687
 688 static int tuner_suspend(struct device *dev, pm_message_t state, u32 level)
 689 {
 690         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 691         struct tuner *t = i2c_get_clientdata (c);
 692
 693         tuner_dbg ("suspend\n");
 694         /* FIXME: power down ??? */
 695         return 0;
 696 }
 697
 698 static int tuner_resume(struct device *dev, u32 level)
 699 {
 700         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 701         struct tuner *t = i2c_get_clientdata (c);
 702
 703         tuner_dbg ("resume\n");
 704         if (t->freq)
 705                 set_freq(c, t->freq);
 706         return 0;
 707 }
 708
 709 /* ----------------------------------------------------------------------- */
 710
 711 static struct i2c_driver driver = {
 712         .owner = THIS_MODULE,
 713         .name = "tuner",
 714         .id = I2C_DRIVERID_TUNER,
 715         .flags = I2C_DF_NOTIFY,
 716         .attach_adapter = tuner_probe,
 717         .detach_client = tuner_detach,
 718         .command = tuner_command,
 719         .driver = {
 720                    .suspend = tuner_suspend,
 721                    .resume = tuner_resume,
 722                    },
 723 };
 724 static struct i2c_client client_template = {
 725         .name = "(tuner unset)",
 726         .flags = I2C_CLIENT_ALLOW_USE,
 727         .driver = &driver,
 728 };
 729
 730 static int __init tuner_init_module(void)
 731 {
 732         return i2c_add_driver(&driver);
 733 }
 734
 735 static void __exit tuner_cleanup_module(void)
 736 {
 737         i2c_del_driver(&driver);
 738 }
 739
 740 module_init(tuner_init_module);
 741 module_exit(tuner_cleanup_module);
 742
 743 /*
 744  * Overrides for Emacs so that we follow Linus's tabbing style.
 745  * ---------------------------------------------------------------------------
 746  * Local variables:
 747  * c-basic-offset: 8
 748  * End:
 749  */