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/v4l2-common.h>
  24
  25 #define UNSET (-1U)
  26
  27 /* standard i2c insmod options */
  28 static unsigned short normal_i2c[] = {
  29         0x42, 0x43, 0x4a, 0x4b,                 /* tda8290 */
  30         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
  31         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  32         I2C_CLIENT_END
  33 };
  34
  35 I2C_CLIENT_INSMOD;
  36
  37 /* insmod options used at init time => read/only */
  38 static unsigned int addr = 0;
  39 static unsigned int no_autodetect = 0;
  40 static unsigned int show_i2c = 0;
  41
  42 /* insmod options used at runtime => read/write */
  43 int tuner_debug = 0;
  44
  45 static unsigned int tv_range[2] = { 44, 958 };
  46 static unsigned int radio_range[2] = { 65, 108 };
  47
  48 static char pal[] = "--";
  49 static char secam[] = "--";
  50 static char ntsc[] = "-";
  51
  52
  53 module_param(addr, int, 0444);
  54 module_param(no_autodetect, int, 0444);
  55 module_param(show_i2c, int, 0444);
  56 module_param_named(debug,tuner_debug, int, 0644);
  57 module_param_string(pal, pal, sizeof(pal), 0644);
  58 module_param_string(secam, secam, sizeof(secam), 0644);
  59 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
  60 module_param_array(tv_range, int, NULL, 0644);
  61 module_param_array(radio_range, int, NULL, 0644);
  62
  63 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
  64 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
  65 MODULE_LICENSE("GPL");
  66
  67 static struct i2c_driver driver;
  68 static struct i2c_client client_template;
  69
  70 /* ---------------------------------------------------------------------- */
  71
  72 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
  73 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
  74 {
  75         struct tuner *t = i2c_get_clientdata(c);
  76
  77         if (t->type == UNSET) {
  78                 tuner_warn ("tuner type not set\n");
  79                 return;
  80         }
  81         if (NULL == t->set_tv_freq) {
  82                 tuner_warn ("Tuner has no way to set tv freq\n");
  83                 return;
  84         }
  85         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
  86                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
  87                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
  88                            tv_range[1]);
  89                 /* V4L2 spec: if the freq is not possible then the closest
  90                    possible value should be selected */
  91                 if (freq < tv_range[0] * 16)
  92                         freq = tv_range[0] * 16;
  93                 else
  94                         freq = tv_range[1] * 16;
  95         }
  96         t->set_tv_freq(c, freq);
  97 }
  98
  99 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
 100 {
 101         struct tuner *t = i2c_get_clientdata(c);
 102
 103         if (t->type == UNSET) {
 104                 tuner_warn ("tuner type not set\n");
 105                 return;
 106         }
 107         if (NULL == t->set_radio_freq) {
 108                 tuner_warn ("tuner has no way to set radio frequency\n");
 109                 return;
 110         }
 111         if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
 112                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
 113                            freq / 16000, freq % 16000 * 100 / 16000,
 114                            radio_range[0], radio_range[1]);
 115                 /* V4L2 spec: if the freq is not possible then the closest
 116                    possible value should be selected */
 117                 if (freq < radio_range[0] * 16000)
 118                         freq = radio_range[0] * 16000;
 119                 else
 120                         freq = radio_range[1] * 16000;
 121         }
 122
 123         t->set_radio_freq(c, freq);
 124 }
 125
 126 static void set_freq(struct i2c_client *c, unsigned long freq)
 127 {
 128         struct tuner *t = i2c_get_clientdata(c);
 129
 130         switch (t->mode) {
 131         case V4L2_TUNER_RADIO:
 132                 tuner_dbg("radio freq set to %lu.%02lu\n",
 133                           freq / 16000, freq % 16000 * 100 / 16000);
 134                 set_radio_freq(c, freq);
 135                 t->radio_freq = freq;
 136                 break;
 137         case V4L2_TUNER_ANALOG_TV:
 138         case V4L2_TUNER_DIGITAL_TV:
 139                 tuner_dbg("tv freq set to %lu.%02lu\n",
 140                           freq / 16, freq % 16 * 100 / 16);
 141                 set_tv_freq(c, freq);
 142                 t->tv_freq = freq;
 143                 break;
 144         }
 145 }
 146
 147 static void set_type(struct i2c_client *c, unsigned int type,
 148                      unsigned int new_mode_mask)
 149 {
 150         struct tuner *t = i2c_get_clientdata(c);
 151         unsigned char buffer[4];
 152
 153         if (type == UNSET || type == TUNER_ABSENT) {
 154                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
 155                 return;
 156         }
 157
 158         if (type >= tuner_count) {
 159                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
 160                 return;
 161         }
 162
 163         /* This code detects calls by card attach_inform */
 164         if (NULL == t->i2c.dev.driver) {
 165                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
 166
 167                 t->type=type;
 168                 return;
 169         }
 170
 171         t->type = type;
 172         switch (t->type) {
 173         case TUNER_MT2032:
 174                 microtune_init(c);
 175                 break;
 176         case TUNER_PHILIPS_TDA8290:
 177                 tda8290_init(c);
 178                 break;
 179         case TUNER_TEA5767:
 180                 if (tea5767_tuner_init(c) == EINVAL) {
 181                         t->type = TUNER_ABSENT;
 182                         t->mode_mask = T_UNINITIALIZED;
 183                         return;
 184                 }
 185                 t->mode_mask = T_RADIO;
 186                 break;
 187         case TUNER_PHILIPS_FMD1216ME_MK3:
 188                 buffer[0] = 0x0b;
 189                 buffer[1] = 0xdc;
 190                 buffer[2] = 0x9c;
 191                 buffer[3] = 0x60;
 192                 i2c_master_send(c, buffer, 4);
 193                 mdelay(1);
 194                 buffer[2] = 0x86;
 195                 buffer[3] = 0x54;
 196                 i2c_master_send(c, buffer, 4);
 197                 default_tuner_init(c);
 198                 break;
 199         case TUNER_PHILIPS_TD1316:
 200                 buffer[0] = 0x0b;
 201                 buffer[1] = 0xdc;
 202                 buffer[2] = 0x86;
 203                 buffer[3] = 0xa4;
 204                 i2c_master_send(c,buffer,4);
 205                 default_tuner_init(c);
 206                 break;
 207         case TUNER_TDA9887:
 208                 tda9887_tuner_init(c);
 209                 break;
 210         default:
 211                 default_tuner_init(c);
 212                 break;
 213         }
 214
 215         if (t->mode_mask == T_UNINITIALIZED)
 216                 t->mode_mask = new_mode_mask;
 217
 218         set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? t->radio_freq : t->tv_freq);
 219         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 220                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
 221                   t->mode_mask);
 222 }
 223
 224 /*
 225  * This function apply tuner config to tuner specified
 226  * by tun_setup structure. I addr is unset, then admin status
 227  * and tun addr status is more precise then current status,
 228  * it's applied. Otherwise status and type are applied only to
 229  * tuner with exactly the same addr.
 230 */
 231
 232 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 233 {
 234         struct tuner *t = i2c_get_clientdata(c);
 235
 236         tuner_dbg("set addr for type %i\n", t->type);
 237
 238         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
 239                 (t->mode_mask & tun_setup->mode_mask)) ||
 240                 tun_setup->addr == c->addr)) {
 241                         set_type(c, tun_setup->type, tun_setup->mode_mask);
 242         }
 243 }
 244
 245 static inline int check_mode(struct tuner *t, char *cmd)
 246 {
 247         if ((1 << t->mode & t->mode_mask) == 0) {
 248                 return EINVAL;
 249         }
 250
 251         switch (t->mode) {
 252         case V4L2_TUNER_RADIO:
 253                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
 254                 break;
 255         case V4L2_TUNER_ANALOG_TV:
 256                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
 257                 break;
 258         case V4L2_TUNER_DIGITAL_TV:
 259                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
 260                 break;
 261         }
 262         return 0;
 263 }
 264
 265 /* get more precise norm info from insmod option */
 266 static int tuner_fixup_std(struct tuner *t)
 267 {
 268         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 269                 switch (pal[0]) {
 270                 case 'b':
 271                 case 'B':
 272                 case 'g':
 273                 case 'G':
 274                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 275                         t->std = V4L2_STD_PAL_BG;
 276                         break;
 277                 case 'i':
 278                 case 'I':
 279                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 280                         t->std = V4L2_STD_PAL_I;
 281                         break;
 282                 case 'd':
 283                 case 'D':
 284                 case 'k':
 285                 case 'K':
 286                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 287                         t->std = V4L2_STD_PAL_DK;
 288                         break;
 289                 case 'M':
 290                 case 'm':
 291                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 292                         t->std = V4L2_STD_PAL_M;
 293                         break;
 294                 case 'N':
 295                 case 'n':
 296                         if (pal[1] == 'c' || pal[1] == 'C') {
 297                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
 298                                 t->std = V4L2_STD_PAL_Nc;
 299                         } else {
 300                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 301                                 t->std = V4L2_STD_PAL_N;
 302                         }
 303                         break;
 304                 case '-':
 305                         /* default parameter, do nothing */
 306                         break;
 307                 default:
 308                         tuner_warn ("pal= argument not recognised\n");
 309                         break;
 310                 }
 311         }
 312         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 313                 switch (secam[0]) {
 314                 case 'b':
 315                 case 'B':
 316                 case 'g':
 317                 case 'G':
 318                 case 'h':
 319                 case 'H':
 320                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
 321                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
 322                         break;
 323                 case 'd':
 324                 case 'D':
 325                 case 'k':
 326                 case 'K':
 327                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 328                         t->std = V4L2_STD_SECAM_DK;
 329                         break;
 330                 case 'l':
 331                 case 'L':
 332                         if ((secam[1]=='C')||(secam[1]=='c')) {
 333                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
 334                                 t->std = V4L2_STD_SECAM_LC;
 335                         } else {
 336                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 337                                 t->std = V4L2_STD_SECAM_L;
 338                         }
 339                         break;
 340                 case '-':
 341                         /* default parameter, do nothing */
 342                         break;
 343                 default:
 344                         tuner_warn ("secam= argument not recognised\n");
 345                         break;
 346                 }
 347         }
 348
 349         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
 350                 switch (ntsc[0]) {
 351                 case 'm':
 352                 case 'M':
 353                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
 354                         t->std = V4L2_STD_NTSC_M;
 355                         break;
 356                 case 'j':
 357                 case 'J':
 358                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
 359                         t->std = V4L2_STD_NTSC_M_JP;
 360                         break;
 361                 case 'k':
 362                 case 'K':
 363                         tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
 364                         t->std = V4L2_STD_NTSC_M_KR;
 365                         break;
 366                 case '-':
 367                         /* default parameter, do nothing */
 368                         break;
 369                 default:
 370                         tuner_info("ntsc= argument not recognised\n");
 371                         break;
 372                 }
 373         }
 374         return 0;
 375 }
 376
 377 static void tuner_status(struct i2c_client *client)
 378 {
 379         struct tuner *t = i2c_get_clientdata(client);
 380         unsigned long freq, freq_fraction;
 381         const char *p;
 382
 383         switch (t->mode) {
 384                 case V4L2_TUNER_RADIO:      p = "radio"; break;
 385                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
 386                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
 387                 default: p = "undefined"; break;
 388         }
 389         if (t->mode == V4L2_TUNER_RADIO) {
 390                 freq = t->radio_freq / 16000;
 391                 freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
 392         } else {
 393                 freq = t->tv_freq / 16;
 394                 freq_fraction = (t->tv_freq % 16) * 100 / 16;
 395         }
 396         tuner_info("Tuner mode:      %s\n", p);
 397         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
 398         tuner_info("Standard:        0x%08lx\n", (unsigned long)t->std);
 399         if (t->mode != V4L2_TUNER_RADIO)
 400                return;
 401         if (t->has_signal) {
 402                 tuner_info("Signal strength: %d\n", t->has_signal(client));
 403         }
 404         if (t->is_stereo) {
 405                 tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
 406         }
 407 }
 408
 409 /* ---------------------------------------------------------------------- */
 410
 411 /* static vars: used only in tuner_attach and tuner_probe */
 412 static unsigned default_mode_mask;
 413
 414 /* During client attach, set_type is called by adapter's attach_inform callback.
 415    set_type must then be completed by tuner_attach.
 416  */
 417 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 418 {
 419         struct tuner *t;
 420
 421         client_template.adapter = adap;
 422         client_template.addr = addr;
 423
 424         t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
 425         if (NULL == t)
 426                 return -ENOMEM;
 427         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 428         i2c_set_clientdata(&t->i2c, t);
 429         t->type = UNSET;
 430         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 431         t->audmode = V4L2_TUNER_MODE_STEREO;
 432         t->mode_mask = T_UNINITIALIZED;
 433         t->tuner_status = tuner_status;
 434
 435         if (show_i2c) {
 436                 unsigned char buffer[16];
 437                 int i,rc;
 438
 439                 memset(buffer, 0, sizeof(buffer));
 440                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 441                 tuner_info("I2C RECV = ");
 442                 for (i=0;i<rc;i++)
 443                         printk("%02x ",buffer[i]);
 444                 printk("\n");
 445         }
 446         /* HACK: This test were added to avoid tuner to probe tda9840 and tea6415c on the MXB card */
 447         if (adap->id == I2C_HW_SAA7146 && addr < 0x4a)
 448                 return -ENODEV;
 449
 450         /* autodetection code based on the i2c addr */
 451         if (!no_autodetect) {
 452                 switch (addr) {
 453                 case 0x42:
 454                 case 0x43:
 455                 case 0x4a:
 456                 case 0x4b:
 457                         /* If chip is not tda8290, don't register.
 458                            since it can be tda9887*/
 459                         if (tda8290_probe(&t->i2c) == 0) {
 460                                 tuner_dbg("chip at addr %x is a tda8290\n", addr);
 461                         } else {
 462                                 /* Default is being tda9887 */
 463                                 t->type = TUNER_TDA9887;
 464                                 t->mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 465                                 t->mode = T_STANDBY;
 466                                 goto register_client;
 467                         }
 468                         break;
 469                 case 0x60:
 470                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 471                                 t->type = TUNER_TEA5767;
 472                                 t->mode_mask = T_RADIO;
 473                                 t->mode = T_STANDBY;
 474                                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 475                                 default_mode_mask &= ~T_RADIO;
 476
 477                                 goto register_client;
 478                         }
 479                         break;
 480                 }
 481         }
 482
 483         /* Initializes only the first adapter found */
 484         if (default_mode_mask != T_UNINITIALIZED) {
 485                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 486                 t->mode_mask = default_mode_mask;
 487                 t->tv_freq = 400 * 16; /* Sets freq to VHF High */
 488                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 489                 default_mode_mask = T_UNINITIALIZED;
 490         }
 491
 492         /* Should be just before return */
 493 register_client:
 494         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 495         i2c_attach_client (&t->i2c);
 496         set_type (&t->i2c,t->type, t->mode_mask);
 497         return 0;
 498 }
 499
 500 static int tuner_probe(struct i2c_adapter *adap)
 501 {
 502         if (0 != addr) {
 503                 normal_i2c[0] = addr;
 504                 normal_i2c[1] = I2C_CLIENT_END;
 505         }
 506
 507         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 508
 509         if (adap->class & I2C_CLASS_TV_ANALOG)
 510                 return i2c_probe(adap, &addr_data, tuner_attach);
 511         return 0;
 512 }
 513
 514 static int tuner_detach(struct i2c_client *client)
 515 {
 516         struct tuner *t = i2c_get_clientdata(client);
 517         int err;
 518
 519         err = i2c_detach_client(&t->i2c);
 520         if (err) {
 521                 tuner_warn
 522                     ("Client deregistration failed, client not detached.\n");
 523                 return err;
 524         }
 525
 526         kfree(t);
 527         return 0;
 528 }
 529
 530 /*
 531  * Switch tuner to other mode. If tuner support both tv and radio,
 532  * set another frequency to some value (This is needed for some pal
 533  * tuners to avoid locking). Otherwise, just put second tuner in
 534  * standby mode.
 535  */
 536
 537 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 538 {
 539         if (mode == t->mode)
 540                 return 0;
 541
 542         t->mode = mode;
 543
 544         if (check_mode(t, cmd) == EINVAL) {
 545                 t->mode = T_STANDBY;
 546                 if (t->standby)
 547                         t->standby (client);
 548                 return EINVAL;
 549         }
 550         return 0;
 551 }
 552
 553 #define switch_v4l2()   if (!t->using_v4l2) \
 554                             tuner_dbg("switching to v4l2\n"); \
 555                         t->using_v4l2 = 1;
 556
 557 static inline int check_v4l2(struct tuner *t)
 558 {
 559         /* bttv still uses both v4l1 and v4l2 calls to the tuner (v4l2 for
 560            TV, v4l1 for radio), until that is fixed this code is disabled.
 561            Otherwise the radio (v4l1) wouldn't tune after using the TV (v4l2)
 562            first. */
 563         return 0;
 564 }
 565
 566 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 567 {
 568         struct tuner *t = i2c_get_clientdata(client);
 569
 570         if (tuner_debug>1)
 571                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
 572
 573         switch (cmd) {
 574         /* --- configuration --- */
 575         case TUNER_SET_TYPE_ADDR:
 576                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 577                                 ((struct tuner_setup *)arg)->type,
 578                                 ((struct tuner_setup *)arg)->addr,
 579                                 ((struct tuner_setup *)arg)->mode_mask);
 580
 581                 set_addr(client, (struct tuner_setup *)arg);
 582                 break;
 583         case AUDC_SET_RADIO:
 584                 if (set_mode(client, t, V4L2_TUNER_RADIO, "AUDC_SET_RADIO")
 585                                 == EINVAL)
 586                         return 0;
 587                 if (t->radio_freq)
 588                         set_freq(client, t->radio_freq);
 589                 break;
 590         case TUNER_SET_STANDBY:
 591                 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 592                         return 0;
 593                 t->mode = T_STANDBY;
 594                 if (t->standby)
 595                         t->standby (client);
 596                 break;
 597 #ifdef CONFIG_VIDEO_V4L1
 598         case VIDIOCSAUDIO:
 599                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 600                         return 0;
 601                 if (check_v4l2(t) == EINVAL)
 602                         return 0;
 603
 604                 /* Should be implemented, since bttv calls it */
 605                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 606                 break;
 607         case VIDIOCSCHAN:
 608                 {
 609                         static const v4l2_std_id map[] = {
 610                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 611                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 612                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 613                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 614                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 615                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 616                         };
 617                         struct video_channel *vc = arg;
 618
 619                         if (check_v4l2(t) == EINVAL)
 620                                 return 0;
 621
 622                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 623                                 return 0;
 624
 625                         if (vc->norm < ARRAY_SIZE(map))
 626                                 t->std = map[vc->norm];
 627                         tuner_fixup_std(t);
 628                         if (t->tv_freq)
 629                                 set_tv_freq(client, t->tv_freq);
 630                         return 0;
 631                 }
 632         case VIDIOCSFREQ:
 633                 {
 634                         unsigned long *v = arg;
 635
 636                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 637                                 return 0;
 638                         if (check_v4l2(t) == EINVAL)
 639                                 return 0;
 640
 641                         set_freq(client, *v);
 642                         return 0;
 643                 }
 644         case VIDIOCGTUNER:
 645                 {
 646                         struct video_tuner *vt = arg;
 647
 648                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 649                                 return 0;
 650                         if (check_v4l2(t) == EINVAL)
 651                                 return 0;
 652
 653                         if (V4L2_TUNER_RADIO == t->mode) {
 654                                 if (t->has_signal)
 655                                         vt->signal = t->has_signal(client);
 656                                 if (t->is_stereo) {
 657                                         if (t->is_stereo(client))
 658                                                 vt->flags |=
 659                                                     VIDEO_TUNER_STEREO_ON;
 660                                         else
 661                                                 vt->flags &=
 662                                                     ~VIDEO_TUNER_STEREO_ON;
 663                                 }
 664                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 665
 666                                 vt->rangelow = radio_range[0] * 16000;
 667                                 vt->rangehigh = radio_range[1] * 16000;
 668
 669                         } else {
 670                                 vt->rangelow = tv_range[0] * 16;
 671                                 vt->rangehigh = tv_range[1] * 16;
 672                         }
 673
 674                         return 0;
 675                 }
 676         case VIDIOCGAUDIO:
 677                 {
 678                         struct video_audio *va = arg;
 679
 680                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 681                                 return 0;
 682                         if (check_v4l2(t) == EINVAL)
 683                                 return 0;
 684
 685                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 686                                 va->mode = t->is_stereo(client)
 687                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 688                         return 0;
 689                 }
 690 #endif
 691         case TDA9887_SET_CONFIG:
 692                 if (t->type == TUNER_TDA9887) {
 693                         int *i = arg;
 694
 695                         t->tda9887_config = *i;
 696                         set_freq(client, t->tv_freq);
 697                 }
 698                 break;
 699         /* --- v4l ioctls --- */
 700         /* take care: bttv does userspace copying, we'll get a
 701            kernel pointer here... */
 702         case VIDIOC_S_STD:
 703                 {
 704                         v4l2_std_id *id = arg;
 705
 706                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 707                                         == EINVAL)
 708                                 return 0;
 709
 710                         switch_v4l2();
 711
 712                         t->std = *id;
 713                         tuner_fixup_std(t);
 714                         if (t->tv_freq)
 715                                 set_freq(client, t->tv_freq);
 716                         break;
 717                 }
 718         case VIDIOC_S_FREQUENCY:
 719                 {
 720                         struct v4l2_frequency *f = arg;
 721
 722                         if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 723                                         == EINVAL)
 724                                 return 0;
 725                         switch_v4l2();
 726                         set_freq(client,f->frequency);
 727
 728                         break;
 729                 }
 730         case VIDIOC_G_FREQUENCY:
 731                 {
 732                         struct v4l2_frequency *f = arg;
 733
 734                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 735                                 return 0;
 736                         switch_v4l2();
 737                         f->type = t->mode;
 738                         f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
 739                                 t->radio_freq : t->tv_freq;
 740                         break;
 741                 }
 742         case VIDIOC_G_TUNER:
 743                 {
 744                         struct v4l2_tuner *tuner = arg;
 745
 746                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 747                                 return 0;
 748                         switch_v4l2();
 749
 750                         tuner->type = t->mode;
 751                         if (t->get_afc)
 752                                 tuner->afc=t->get_afc(client);
 753                         if (t->mode == V4L2_TUNER_ANALOG_TV)
 754                                 tuner->capability |= V4L2_TUNER_CAP_NORM;
 755                         if (t->mode != V4L2_TUNER_RADIO) {
 756                                 tuner->rangelow = tv_range[0] * 16;
 757                                 tuner->rangehigh = tv_range[1] * 16;
 758                                 break;
 759                         }
 760
 761                         /* radio mode */
 762                         if (t->has_signal)
 763                                 tuner->signal = t->has_signal(client);
 764
 765                         tuner->rxsubchans =
 766                                 V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 767                         if (t->is_stereo) {
 768                                 tuner->rxsubchans = t->is_stereo(client) ?
 769                                         V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 770                         }
 771
 772                         tuner->capability |=
 773                             V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 774                         tuner->audmode = t->audmode;
 775                         tuner->rangelow = radio_range[0] * 16000;
 776                         tuner->rangehigh = radio_range[1] * 16000;
 777                         break;
 778                 }
 779         case VIDIOC_S_TUNER:
 780                 {
 781                         struct v4l2_tuner *tuner = arg;
 782
 783                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 784                                 return 0;
 785
 786                         switch_v4l2();
 787
 788                         /* do nothing unless we're a radio tuner */
 789                         if (t->mode != V4L2_TUNER_RADIO)
 790                                 break;
 791                         t->audmode = tuner->audmode;
 792                         set_radio_freq(client, t->radio_freq);
 793                         break;
 794                 }
 795         case VIDIOC_LOG_STATUS:
 796                 if (t->tuner_status)
 797                         t->tuner_status(client);
 798                 break;
 799         }
 800
 801         return 0;
 802 }
 803
 804 static int tuner_suspend(struct device *dev, pm_message_t state)
 805 {
 806         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 807         struct tuner *t = i2c_get_clientdata (c);
 808
 809         tuner_dbg ("suspend\n");
 810         /* FIXME: power down ??? */
 811         return 0;
 812 }
 813
 814 static int tuner_resume(struct device *dev)
 815 {
 816         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 817         struct tuner *t = i2c_get_clientdata (c);
 818
 819         tuner_dbg ("resume\n");
 820         if (V4L2_TUNER_RADIO == t->mode) {
 821                 if (t->radio_freq)
 822                         set_freq(c, t->radio_freq);
 823         } else {
 824                 if (t->tv_freq)
 825                         set_freq(c, t->tv_freq);
 826         }
 827         return 0;
 828 }
 829
 830 /* ----------------------------------------------------------------------- */
 831
 832 static struct i2c_driver driver = {
 833         .id = I2C_DRIVERID_TUNER,
 834         .attach_adapter = tuner_probe,
 835         .detach_client = tuner_detach,
 836         .command = tuner_command,
 837         .driver = {
 838                 .name    = "tuner",
 839                 .suspend = tuner_suspend,
 840                 .resume  = tuner_resume,
 841         },
 842 };
 843 static struct i2c_client client_template = {
 844         .name = "(tuner unset)",
 845         .driver = &driver,
 846 };
 847
 848 static int __init tuner_init_module(void)
 849 {
 850         return i2c_add_driver(&driver);
 851 }
 852
 853 static void __exit tuner_cleanup_module(void)
 854 {
 855         i2c_del_driver(&driver);
 856 }
 857
 858 module_init(tuner_init_module);
 859 module_exit(tuner_cleanup_module);
 860
 861 /*
 862  * Overrides for Emacs so that we follow Linus's tabbing style.
 863  * ---------------------------------------------------------------------------
 864  * Local variables:
 865  * c-basic-offset: 8
 866  * End:
 867  */