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 #include <media/audiochip.h>
  25
  26 #define UNSET (-1U)
  27
  28 /* standard i2c insmod options */
  29 static unsigned short normal_i2c[] = {
  30         0x42, 0x43, 0x4a, 0x4b,                 /* tda8290 */
  31         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
  32         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  33         I2C_CLIENT_END
  34 };
  35
  36 I2C_CLIENT_INSMOD;
  37
  38 /* insmod options used at init time => read/only */
  39 static unsigned int addr = 0;
  40 static unsigned int no_autodetect = 0;
  41 static unsigned int show_i2c = 0;
  42
  43 /* insmod options used at runtime => read/write */
  44 static unsigned int tuner_debug_old = 0;
  45 int tuner_debug = 0;
  46
  47 static unsigned int tv_range[2] = { 44, 958 };
  48 static unsigned int radio_range[2] = { 65, 108 };
  49
  50 static char pal[] = "--";
  51 static char secam[] = "--";
  52 static char ntsc[] = "-";
  53
  54
  55 module_param(addr, int, 0444);
  56 module_param(no_autodetect, int, 0444);
  57 module_param(show_i2c, int, 0444);
  58 /* Note: tuner_debug is deprecated and will be removed in 2.6.17 */
  59 module_param_named(tuner_debug,tuner_debug_old, int, 0444);
  60 module_param_named(debug,tuner_debug, int, 0644);
  61 module_param_string(pal, pal, sizeof(pal), 0644);
  62 module_param_string(secam, secam, sizeof(secam), 0644);
  63 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
  64 module_param_array(tv_range, int, NULL, 0644);
  65 module_param_array(radio_range, int, NULL, 0644);
  66
  67 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
  68 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
  69 MODULE_LICENSE("GPL");
  70
  71 static struct i2c_driver driver;
  72 static struct i2c_client client_template;
  73
  74 /* ---------------------------------------------------------------------- */
  75
  76 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
  77 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
  78 {
  79         struct tuner *t = i2c_get_clientdata(c);
  80
  81         if (t->type == UNSET) {
  82                 tuner_warn ("tuner type not set\n");
  83                 return;
  84         }
  85         if (NULL == t->set_tv_freq) {
  86                 tuner_warn ("Tuner has no way to set tv freq\n");
  87                 return;
  88         }
  89         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
  90                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
  91                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
  92                            tv_range[1]);
  93                 /* V4L2 spec: if the freq is not possible then the closest
  94                    possible value should be selected */
  95                 if (freq < tv_range[0] * 16)
  96                         freq = tv_range[0] * 16;
  97                 else
  98                         freq = tv_range[1] * 16;
  99         }
 100         t->set_tv_freq(c, freq);
 101 }
 102
 103 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
 104 {
 105         struct tuner *t = i2c_get_clientdata(c);
 106
 107         if (t->type == UNSET) {
 108                 tuner_warn ("tuner type not set\n");
 109                 return;
 110         }
 111         if (NULL == t->set_radio_freq) {
 112                 tuner_warn ("tuner has no way to set radio frequency\n");
 113                 return;
 114         }
 115         if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
 116                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
 117                            freq / 16000, freq % 16000 * 100 / 16000,
 118                            radio_range[0], radio_range[1]);
 119                 /* V4L2 spec: if the freq is not possible then the closest
 120                    possible value should be selected */
 121                 if (freq < radio_range[0] * 16000)
 122                         freq = radio_range[0] * 16000;
 123                 else
 124                         freq = radio_range[1] * 16000;
 125         }
 126
 127         t->set_radio_freq(c, freq);
 128 }
 129
 130 static void set_freq(struct i2c_client *c, unsigned long freq)
 131 {
 132         struct tuner *t = i2c_get_clientdata(c);
 133
 134         switch (t->mode) {
 135         case V4L2_TUNER_RADIO:
 136                 tuner_dbg("radio freq set to %lu.%02lu\n",
 137                           freq / 16000, freq % 16000 * 100 / 16000);
 138                 set_radio_freq(c, freq);
 139                 t->radio_freq = freq;
 140                 break;
 141         case V4L2_TUNER_ANALOG_TV:
 142         case V4L2_TUNER_DIGITAL_TV:
 143                 tuner_dbg("tv freq set to %lu.%02lu\n",
 144                           freq / 16, freq % 16 * 100 / 16);
 145                 set_tv_freq(c, freq);
 146                 t->tv_freq = freq;
 147                 break;
 148         }
 149 }
 150
 151 static void set_type(struct i2c_client *c, unsigned int type,
 152                      unsigned int new_mode_mask)
 153 {
 154         struct tuner *t = i2c_get_clientdata(c);
 155         unsigned char buffer[4];
 156
 157         if (type == UNSET || type == TUNER_ABSENT) {
 158                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
 159                 return;
 160         }
 161
 162         if (type >= tuner_count) {
 163                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
 164                 return;
 165         }
 166
 167         /* This code detects calls by card attach_inform */
 168         if (NULL == t->i2c.dev.driver) {
 169                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
 170
 171                 t->type=type;
 172                 return;
 173         }
 174
 175         t->type = type;
 176
 177         switch (t->type) {
 178         case TUNER_MT2032:
 179                 microtune_init(c);
 180                 break;
 181         case TUNER_PHILIPS_TDA8290:
 182                 tda8290_init(c);
 183                 break;
 184         case TUNER_TEA5767:
 185                 if (tea5767_tuner_init(c) == EINVAL) {
 186                         t->type = TUNER_ABSENT;
 187                         t->mode_mask = T_UNINITIALIZED;
 188                         return;
 189                 }
 190                 t->mode_mask = T_RADIO;
 191                 break;
 192         case TUNER_PHILIPS_FMD1216ME_MK3:
 193                 buffer[0] = 0x0b;
 194                 buffer[1] = 0xdc;
 195                 buffer[2] = 0x9c;
 196                 buffer[3] = 0x60;
 197                 i2c_master_send(c, buffer, 4);
 198                 mdelay(1);
 199                 buffer[2] = 0x86;
 200                 buffer[3] = 0x54;
 201                 i2c_master_send(c, buffer, 4);
 202                 default_tuner_init(c);
 203                 break;
 204         case TUNER_LG_TDVS_H062F:
 205                 /* Set the Auxiliary Byte. */
 206                 buffer[2] &= ~0x20;
 207                 buffer[2] |= 0x18;
 208                 buffer[3] = 0x20;
 209                 i2c_master_send(c, buffer, 4);
 210                 default_tuner_init(c);
 211                 break;
 212         case TUNER_PHILIPS_TD1316:
 213                 buffer[0] = 0x0b;
 214                 buffer[1] = 0xdc;
 215                 buffer[2] = 0x86;
 216                 buffer[3] = 0xa4;
 217                 i2c_master_send(c,buffer,4);
 218                 default_tuner_init(c);
 219         default:
 220                 default_tuner_init(c);
 221                 break;
 222         }
 223
 224         if (t->mode_mask == T_UNINITIALIZED)
 225                 t->mode_mask = new_mode_mask;
 226
 227         set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? t->radio_freq : t->tv_freq);
 228         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 229                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
 230                   t->mode_mask);
 231 }
 232
 233 /*
 234  * This function apply tuner config to tuner specified
 235  * by tun_setup structure. I addr is unset, then admin status
 236  * and tun addr status is more precise then current status,
 237  * it's applied. Otherwise status and type are applied only to
 238  * tuner with exactly the same addr.
 239 */
 240
 241 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 242 {
 243         struct tuner *t = i2c_get_clientdata(c);
 244
 245         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
 246                 (t->mode_mask & tun_setup->mode_mask)) ||
 247                 tun_setup->addr == c->addr)) {
 248                         set_type(c, tun_setup->type, tun_setup->mode_mask);
 249         }
 250 }
 251
 252 static inline int check_mode(struct tuner *t, char *cmd)
 253 {
 254         if ((1 << t->mode & t->mode_mask) == 0) {
 255                 return EINVAL;
 256         }
 257
 258         switch (t->mode) {
 259         case V4L2_TUNER_RADIO:
 260                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
 261                 break;
 262         case V4L2_TUNER_ANALOG_TV:
 263                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
 264                 break;
 265         case V4L2_TUNER_DIGITAL_TV:
 266                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
 267                 break;
 268         }
 269         return 0;
 270 }
 271
 272 /* get more precise norm info from insmod option */
 273 static int tuner_fixup_std(struct tuner *t)
 274 {
 275         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 276                 switch (pal[0]) {
 277                 case 'b':
 278                 case 'B':
 279                 case 'g':
 280                 case 'G':
 281                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 282                         t->std = V4L2_STD_PAL_BG;
 283                         break;
 284                 case 'i':
 285                 case 'I':
 286                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 287                         t->std = V4L2_STD_PAL_I;
 288                         break;
 289                 case 'd':
 290                 case 'D':
 291                 case 'k':
 292                 case 'K':
 293                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 294                         t->std = V4L2_STD_PAL_DK;
 295                         break;
 296                 case 'M':
 297                 case 'm':
 298                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 299                         t->std = V4L2_STD_PAL_M;
 300                         break;
 301                 case 'N':
 302                 case 'n':
 303                         if (pal[1] == 'c' || pal[1] == 'C') {
 304                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
 305                                 t->std = V4L2_STD_PAL_Nc;
 306                         } else {
 307                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 308                                 t->std = V4L2_STD_PAL_N;
 309                         }
 310                         break;
 311                 case '-':
 312                         /* default parameter, do nothing */
 313                         break;
 314                 default:
 315                         tuner_warn ("pal= argument not recognised\n");
 316                         break;
 317                 }
 318         }
 319         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 320                 switch (secam[0]) {
 321                 case 'b':
 322                 case 'B':
 323                 case 'g':
 324                 case 'G':
 325                 case 'h':
 326                 case 'H':
 327                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
 328                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
 329                         break;
 330                 case 'd':
 331                 case 'D':
 332                 case 'k':
 333                 case 'K':
 334                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 335                         t->std = V4L2_STD_SECAM_DK;
 336                         break;
 337                 case 'l':
 338                 case 'L':
 339                         if ((secam[1]=='C')||(secam[1]=='c')) {
 340                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
 341                                 t->std = V4L2_STD_SECAM_LC;
 342                         } else {
 343                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 344                                 t->std = V4L2_STD_SECAM_L;
 345                         }
 346                         break;
 347                 case '-':
 348                         /* default parameter, do nothing */
 349                         break;
 350                 default:
 351                         tuner_warn ("secam= argument not recognised\n");
 352                         break;
 353                 }
 354         }
 355
 356         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
 357                 switch (ntsc[0]) {
 358                 case 'm':
 359                 case 'M':
 360                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
 361                         t->std = V4L2_STD_NTSC_M;
 362                         break;
 363                 case 'j':
 364                 case 'J':
 365                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
 366                         t->std = V4L2_STD_NTSC_M_JP;
 367                         break;
 368                 case '-':
 369                         /* default parameter, do nothing */
 370                         break;
 371                 default:
 372                         tuner_info("ntsc= argument not recognised\n");
 373                         break;
 374                 }
 375         }
 376         return 0;
 377 }
 378
 379 static void tuner_status(struct i2c_client *client)
 380 {
 381         struct tuner *t = i2c_get_clientdata(client);
 382         unsigned long freq, freq_fraction;
 383         const char *p;
 384
 385         switch (t->mode) {
 386                 case V4L2_TUNER_RADIO:      p = "radio"; break;
 387                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
 388                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
 389                 default: p = "undefined"; break;
 390         }
 391         if (t->mode == V4L2_TUNER_RADIO) {
 392                 freq = t->radio_freq / 16000;
 393                 freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
 394         } else {
 395                 freq = t->tv_freq / 16;
 396                 freq_fraction = (t->tv_freq % 16) * 100 / 16;
 397         }
 398         tuner_info("Tuner mode:      %s\n", p);
 399         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
 400         tuner_info("Standard:        0x%08llx\n", t->std);
 401         if (t->mode == V4L2_TUNER_RADIO) {
 402                 if (t->has_signal) {
 403                         tuner_info("Signal strength: %d\n", t->has_signal(client));
 404                 }
 405                 if (t->is_stereo) {
 406                         tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
 407                 }
 408         }
 409 }
 410 /* ---------------------------------------------------------------------- */
 411
 412 /* static var Used only in tuner_attach and tuner_probe */
 413 static unsigned default_mode_mask;
 414
 415 /* During client attach, set_type is called by adapter's attach_inform callback.
 416    set_type must then be completed by tuner_attach.
 417  */
 418 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 419 {
 420         struct tuner *t;
 421
 422         client_template.adapter = adap;
 423         client_template.addr = addr;
 424
 425         t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
 426         if (NULL == t)
 427                 return -ENOMEM;
 428         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 429         i2c_set_clientdata(&t->i2c, t);
 430         t->type = UNSET;
 431         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 432         t->audmode = V4L2_TUNER_MODE_STEREO;
 433         t->mode_mask = T_UNINITIALIZED;
 434         if (tuner_debug_old) {
 435                 tuner_debug = tuner_debug_old;
 436                 printk(KERN_ERR "tuner: tuner_debug is deprecated and will be removed in 2.6.17.\n");
 437                 printk(KERN_ERR "tuner: use the debug option instead.\n");
 438         }
 439
 440         if (show_i2c) {
 441                 unsigned char buffer[16];
 442                 int i,rc;
 443
 444                 memset(buffer, 0, sizeof(buffer));
 445                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 446                 tuner_info("I2C RECV = ");
 447                 for (i=0;i<rc;i++)
 448                         printk("%02x ",buffer[i]);
 449                 printk("\n");
 450         }
 451         /* TEA5767 autodetection code - only for addr = 0xc0 */
 452         if (!no_autodetect) {
 453                 switch (addr) {
 454                 case 0x42:
 455                 case 0x43:
 456                 case 0x4a:
 457                 case 0x4b:
 458                         /* If chip is not tda8290, don't register.
 459                            since it can be tda9887*/
 460                         if (tda8290_probe(&t->i2c) != 0) {
 461                                 tuner_dbg("chip at addr %x is not a tda8290\n", addr);
 462                                 kfree(t);
 463                                 return 0;
 464                         }
 465                         break;
 466                 case 0x60:
 467                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 468                                 t->type = TUNER_TEA5767;
 469                                 t->mode_mask = T_RADIO;
 470                                 t->mode = T_STANDBY;
 471                                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 472                                 default_mode_mask &= ~T_RADIO;
 473
 474                                 goto register_client;
 475                         }
 476                         break;
 477                 }
 478         }
 479
 480         /* Initializes only the first adapter found */
 481         if (default_mode_mask != T_UNINITIALIZED) {
 482                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 483                 t->mode_mask = default_mode_mask;
 484                 t->tv_freq = 400 * 16; /* Sets freq to VHF High */
 485                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 486                 default_mode_mask = T_UNINITIALIZED;
 487         }
 488
 489         /* Should be just before return */
 490 register_client:
 491         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 492         i2c_attach_client (&t->i2c);
 493         set_type (&t->i2c,t->type, t->mode_mask);
 494         return 0;
 495 }
 496
 497 static int tuner_probe(struct i2c_adapter *adap)
 498 {
 499         if (0 != addr) {
 500                 normal_i2c[0] = addr;
 501                 normal_i2c[1] = I2C_CLIENT_END;
 502         }
 503
 504         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 505
 506         if (adap->class & I2C_CLASS_TV_ANALOG)
 507                 return i2c_probe(adap, &addr_data, tuner_attach);
 508         return 0;
 509 }
 510
 511 static int tuner_detach(struct i2c_client *client)
 512 {
 513         struct tuner *t = i2c_get_clientdata(client);
 514         int err;
 515
 516         err = i2c_detach_client(&t->i2c);
 517         if (err) {
 518                 tuner_warn
 519                     ("Client deregistration failed, client not detached.\n");
 520                 return err;
 521         }
 522
 523         kfree(t);
 524         return 0;
 525 }
 526
 527 /*
 528  * Switch tuner to other mode. If tuner support both tv and radio,
 529  * set another frequency to some value (This is needed for some pal
 530  * tuners to avoid locking). Otherwise, just put second tuner in
 531  * standby mode.
 532  */
 533
 534 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 535 {
 536         if (mode == t->mode)
 537                 return 0;
 538
 539         t->mode = mode;
 540
 541         if (check_mode(t, cmd) == EINVAL) {
 542                 t->mode = T_STANDBY;
 543                 if (t->standby)
 544                         t->standby (client);
 545                 return EINVAL;
 546         }
 547         return 0;
 548 }
 549
 550 #define switch_v4l2()   if (!t->using_v4l2) \
 551                             tuner_dbg("switching to v4l2\n"); \
 552                         t->using_v4l2 = 1;
 553
 554 static inline int check_v4l2(struct tuner *t)
 555 {
 556         if (t->using_v4l2) {
 557                 tuner_dbg ("ignore v4l1 call\n");
 558                 return EINVAL;
 559         }
 560         return 0;
 561 }
 562
 563 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 564 {
 565         struct tuner *t = i2c_get_clientdata(client);
 566
 567         if (tuner_debug>1)
 568                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
 569
 570         switch (cmd) {
 571         /* --- configuration --- */
 572         case TUNER_SET_TYPE_ADDR:
 573                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 574                                 ((struct tuner_setup *)arg)->type,
 575                                 ((struct tuner_setup *)arg)->addr,
 576                                 ((struct tuner_setup *)arg)->mode_mask);
 577
 578                 set_addr(client, (struct tuner_setup *)arg);
 579                 break;
 580         case AUDC_SET_RADIO:
 581                 if (set_mode(client, t, V4L2_TUNER_RADIO, "AUDC_SET_RADIO")
 582                                 == EINVAL)
 583                         return 0;
 584                 if (t->radio_freq)
 585                         set_freq(client, t->radio_freq);
 586                 break;
 587         case TUNER_SET_STANDBY:
 588                 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 589                         return 0;
 590                 if (t->standby)
 591                         t->standby (client);
 592                 break;
 593         case VIDIOCSAUDIO:
 594                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 595                         return 0;
 596                 if (check_v4l2(t) == EINVAL)
 597                         return 0;
 598
 599                 /* Should be implemented, since bttv calls it */
 600                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 601                 break;
 602         /* --- v4l ioctls --- */
 603         /* take care: bttv does userspace copying, we'll get a
 604            kernel pointer here... */
 605         case VIDIOCSCHAN:
 606                 {
 607                         static const v4l2_std_id map[] = {
 608                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 609                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 610                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 611                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 612                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 613                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 614                         };
 615                         struct video_channel *vc = arg;
 616
 617                         if (check_v4l2(t) == EINVAL)
 618                                 return 0;
 619
 620                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 621                                 return 0;
 622
 623                         if (vc->norm < ARRAY_SIZE(map))
 624                                 t->std = map[vc->norm];
 625                         tuner_fixup_std(t);
 626                         if (t->tv_freq)
 627                                 set_tv_freq(client, t->tv_freq);
 628                         return 0;
 629                 }
 630         case VIDIOCSFREQ:
 631                 {
 632                         unsigned long *v = arg;
 633
 634                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 635                                 return 0;
 636                         if (check_v4l2(t) == EINVAL)
 637                                 return 0;
 638
 639                         set_freq(client, *v);
 640                         return 0;
 641                 }
 642         case VIDIOCGTUNER:
 643                 {
 644                         struct video_tuner *vt = arg;
 645
 646                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 647                                 return 0;
 648                         if (check_v4l2(t) == EINVAL)
 649                                 return 0;
 650
 651                         if (V4L2_TUNER_RADIO == t->mode) {
 652                                 if (t->has_signal)
 653                                         vt->signal = t->has_signal(client);
 654                                 if (t->is_stereo) {
 655                                         if (t->is_stereo(client))
 656                                                 vt->flags |=
 657                                                     VIDEO_TUNER_STEREO_ON;
 658                                         else
 659                                                 vt->flags &=
 660                                                     ~VIDEO_TUNER_STEREO_ON;
 661                                 }
 662                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 663
 664                                 vt->rangelow = radio_range[0] * 16000;
 665                                 vt->rangehigh = radio_range[1] * 16000;
 666
 667                         } else {
 668                                 vt->rangelow = tv_range[0] * 16;
 669                                 vt->rangehigh = tv_range[1] * 16;
 670                         }
 671
 672                         return 0;
 673                 }
 674         case VIDIOCGAUDIO:
 675                 {
 676                         struct video_audio *va = arg;
 677
 678                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 679                                 return 0;
 680                         if (check_v4l2(t) == EINVAL)
 681                                 return 0;
 682
 683                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 684                                 va->mode = t->is_stereo(client)
 685                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 686                         return 0;
 687                 }
 688
 689         case VIDIOC_S_STD:
 690                 {
 691                         v4l2_std_id *id = arg;
 692
 693                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 694                                         == EINVAL)
 695                                 return 0;
 696
 697                         switch_v4l2();
 698
 699                         t->std = *id;
 700                         tuner_fixup_std(t);
 701                         if (t->tv_freq)
 702                                 set_freq(client, t->tv_freq);
 703                         break;
 704                 }
 705         case VIDIOC_S_FREQUENCY:
 706                 {
 707                         struct v4l2_frequency *f = arg;
 708
 709                         switch_v4l2();
 710                         if (V4L2_TUNER_RADIO == f->type &&
 711                             V4L2_TUNER_RADIO != t->mode) {
 712                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 713                                             == EINVAL)
 714                                         return 0;
 715                         }
 716                         set_freq(client,f->frequency);
 717
 718                         break;
 719                 }
 720         case VIDIOC_G_FREQUENCY:
 721                 {
 722                         struct v4l2_frequency *f = arg;
 723
 724                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 725                                 return 0;
 726                         switch_v4l2();
 727                         f->type = t->mode;
 728                         f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
 729                                 t->radio_freq : t->tv_freq;
 730                         break;
 731                 }
 732         case VIDIOC_G_TUNER:
 733                 {
 734                         struct v4l2_tuner *tuner = arg;
 735
 736                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 737                                 return 0;
 738                         switch_v4l2();
 739
 740                         if (V4L2_TUNER_RADIO == t->mode) {
 741
 742                                 if (t->has_signal)
 743                                         tuner->signal = t->has_signal(client);
 744
 745                                 if (t->is_stereo) {
 746                                         if (t->is_stereo(client)) {
 747                                                 tuner->rxsubchans =
 748                                                     V4L2_TUNER_SUB_STEREO |
 749                                                     V4L2_TUNER_SUB_MONO;
 750                                         } else {
 751                                                 tuner->rxsubchans =
 752                                                     V4L2_TUNER_SUB_MONO;
 753                                         }
 754                                 }
 755
 756                                 tuner->capability |=
 757                                     V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 758
 759                                 tuner->audmode = t->audmode;
 760
 761                                 tuner->rangelow = radio_range[0] * 16000;
 762                                 tuner->rangehigh = radio_range[1] * 16000;
 763                         } else {
 764                                 tuner->rangelow = tv_range[0] * 16;
 765                                 tuner->rangehigh = tv_range[1] * 16;
 766                         }
 767                         break;
 768                 }
 769         case VIDIOC_S_TUNER:
 770                 {
 771                         struct v4l2_tuner *tuner = arg;
 772
 773                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 774                                 return 0;
 775
 776                         switch_v4l2();
 777
 778                         if (V4L2_TUNER_RADIO == t->mode) {
 779                                 t->audmode = tuner->audmode;
 780                                 set_radio_freq(client, t->radio_freq);
 781                         }
 782                         break;
 783                 }
 784         case VIDIOC_LOG_STATUS:
 785                 tuner_status(client);
 786                 break;
 787         }
 788
 789         return 0;
 790 }
 791
 792 static int tuner_suspend(struct device *dev, pm_message_t state)
 793 {
 794         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 795         struct tuner *t = i2c_get_clientdata (c);
 796
 797         tuner_dbg ("suspend\n");
 798         /* FIXME: power down ??? */
 799         return 0;
 800 }
 801
 802 static int tuner_resume(struct device *dev)
 803 {
 804         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 805         struct tuner *t = i2c_get_clientdata (c);
 806
 807         tuner_dbg ("resume\n");
 808         if (V4L2_TUNER_RADIO == t->mode) {
 809                 if (t->radio_freq)
 810                         set_freq(c, t->radio_freq);
 811         } else {
 812                 if (t->tv_freq)
 813                         set_freq(c, t->tv_freq);
 814         }
 815         return 0;
 816 }
 817
 818 /* ----------------------------------------------------------------------- */
 819
 820 static struct i2c_driver driver = {
 821         .id = I2C_DRIVERID_TUNER,
 822         .attach_adapter = tuner_probe,
 823         .detach_client = tuner_detach,
 824         .command = tuner_command,
 825         .driver = {
 826                 .name    = "tuner",
 827                 .suspend = tuner_suspend,
 828                 .resume  = tuner_resume,
 829         },
 830 };
 831 static struct i2c_client client_template = {
 832         .name = "(tuner unset)",
 833         .driver = &driver,
 834 };
 835
 836 static int __init tuner_init_module(void)
 837 {
 838         return i2c_add_driver(&driver);
 839 }
 840
 841 static void __exit tuner_cleanup_module(void)
 842 {
 843         i2c_del_driver(&driver);
 844 }
 845
 846 module_init(tuner_init_module);
 847 module_exit(tuner_cleanup_module);
 848
 849 /*
 850  * Overrides for Emacs so that we follow Linus's tabbing style.
 851  * ---------------------------------------------------------------------------
 852  * Local variables:
 853  * c-basic-offset: 8
 854  * End:
 855  */