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 static unsigned int tuner_debug_old = 0;
  44 int tuner_debug = 0;
  45
  46 static unsigned int tv_range[2] = { 44, 958 };
  47 static unsigned int radio_range[2] = { 65, 108 };
  48
  49 static char pal[] = "--";
  50 static char secam[] = "--";
  51 static char ntsc[] = "-";
  52
  53
  54 module_param(addr, int, 0444);
  55 module_param(no_autodetect, int, 0444);
  56 module_param(show_i2c, int, 0444);
  57 /* Note: tuner_debug is deprecated and will be removed in 2.6.17 */
  58 module_param_named(tuner_debug,tuner_debug_old, int, 0444);
  59 module_param_named(debug,tuner_debug, int, 0644);
  60 module_param_string(pal, pal, sizeof(pal), 0644);
  61 module_param_string(secam, secam, sizeof(secam), 0644);
  62 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
  63 module_param_array(tv_range, int, NULL, 0644);
  64 module_param_array(radio_range, int, NULL, 0644);
  65
  66 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
  67 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
  68 MODULE_LICENSE("GPL");
  69
  70 static struct i2c_driver driver;
  71 static struct i2c_client client_template;
  72
  73 /* ---------------------------------------------------------------------- */
  74
  75 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
  76 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
  77 {
  78         struct tuner *t = i2c_get_clientdata(c);
  79
  80         if (t->type == UNSET) {
  81                 tuner_warn ("tuner type not set\n");
  82                 return;
  83         }
  84         if (NULL == t->set_tv_freq) {
  85                 tuner_warn ("Tuner has no way to set tv freq\n");
  86                 return;
  87         }
  88         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
  89                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
  90                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
  91                            tv_range[1]);
  92                 /* V4L2 spec: if the freq is not possible then the closest
  93                    possible value should be selected */
  94                 if (freq < tv_range[0] * 16)
  95                         freq = tv_range[0] * 16;
  96                 else
  97                         freq = tv_range[1] * 16;
  98         }
  99         t->set_tv_freq(c, freq);
 100 }
 101
 102 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
 103 {
 104         struct tuner *t = i2c_get_clientdata(c);
 105
 106         if (t->type == UNSET) {
 107                 tuner_warn ("tuner type not set\n");
 108                 return;
 109         }
 110         if (NULL == t->set_radio_freq) {
 111                 tuner_warn ("tuner has no way to set radio frequency\n");
 112                 return;
 113         }
 114         if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
 115                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
 116                            freq / 16000, freq % 16000 * 100 / 16000,
 117                            radio_range[0], radio_range[1]);
 118                 /* V4L2 spec: if the freq is not possible then the closest
 119                    possible value should be selected */
 120                 if (freq < radio_range[0] * 16000)
 121                         freq = radio_range[0] * 16000;
 122                 else
 123                         freq = radio_range[1] * 16000;
 124         }
 125
 126         t->set_radio_freq(c, freq);
 127 }
 128
 129 static void set_freq(struct i2c_client *c, unsigned long freq)
 130 {
 131         struct tuner *t = i2c_get_clientdata(c);
 132
 133         switch (t->mode) {
 134         case V4L2_TUNER_RADIO:
 135                 tuner_dbg("radio freq set to %lu.%02lu\n",
 136                           freq / 16000, freq % 16000 * 100 / 16000);
 137                 set_radio_freq(c, freq);
 138                 t->radio_freq = freq;
 139                 break;
 140         case V4L2_TUNER_ANALOG_TV:
 141         case V4L2_TUNER_DIGITAL_TV:
 142                 tuner_dbg("tv freq set to %lu.%02lu\n",
 143                           freq / 16, freq % 16 * 100 / 16);
 144                 set_tv_freq(c, freq);
 145                 t->tv_freq = freq;
 146                 break;
 147         }
 148 }
 149
 150 static void set_type(struct i2c_client *c, unsigned int type,
 151                      unsigned int new_mode_mask)
 152 {
 153         struct tuner *t = i2c_get_clientdata(c);
 154         unsigned char buffer[4];
 155
 156         if (type == UNSET || type == TUNER_ABSENT) {
 157                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
 158                 return;
 159         }
 160
 161         if (type >= tuner_count) {
 162                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
 163                 return;
 164         }
 165
 166         /* This code detects calls by card attach_inform */
 167         if (NULL == t->i2c.dev.driver) {
 168                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
 169
 170                 t->type=type;
 171                 return;
 172         }
 173
 174         t->type = type;
 175         switch (t->type) {
 176         case TUNER_MT2032:
 177                 microtune_init(c);
 178                 break;
 179         case TUNER_PHILIPS_TDA8290:
 180                 tda8290_init(c);
 181                 break;
 182         case TUNER_TEA5767:
 183                 if (tea5767_tuner_init(c) == EINVAL) {
 184                         t->type = TUNER_ABSENT;
 185                         t->mode_mask = T_UNINITIALIZED;
 186                         return;
 187                 }
 188                 t->mode_mask = T_RADIO;
 189                 break;
 190         case TUNER_PHILIPS_FMD1216ME_MK3:
 191                 buffer[0] = 0x0b;
 192                 buffer[1] = 0xdc;
 193                 buffer[2] = 0x9c;
 194                 buffer[3] = 0x60;
 195                 i2c_master_send(c, buffer, 4);
 196                 mdelay(1);
 197                 buffer[2] = 0x86;
 198                 buffer[3] = 0x54;
 199                 i2c_master_send(c, buffer, 4);
 200                 default_tuner_init(c);
 201                 break;
 202         case TUNER_LG_TDVS_H062F:
 203                 /* Set the Auxiliary Byte. */
 204                 buffer[2] &= ~0x20;
 205                 buffer[2] |= 0x18;
 206                 buffer[3] = 0x20;
 207                 i2c_master_send(c, buffer, 4);
 208                 default_tuner_init(c);
 209                 break;
 210         case TUNER_PHILIPS_TD1316:
 211                 buffer[0] = 0x0b;
 212                 buffer[1] = 0xdc;
 213                 buffer[2] = 0x86;
 214                 buffer[3] = 0xa4;
 215                 i2c_master_send(c,buffer,4);
 216                 default_tuner_init(c);
 217                 break;
 218         default:
 219                 default_tuner_init(c);
 220                 break;
 221         }
 222
 223         if (t->mode_mask == T_UNINITIALIZED)
 224                 t->mode_mask = new_mode_mask;
 225
 226         set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? t->radio_freq : t->tv_freq);
 227         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 228                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
 229                   t->mode_mask);
 230 }
 231
 232 /*
 233  * This function apply tuner config to tuner specified
 234  * by tun_setup structure. I addr is unset, then admin status
 235  * and tun addr status is more precise then current status,
 236  * it's applied. Otherwise status and type are applied only to
 237  * tuner with exactly the same addr.
 238 */
 239
 240 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 241 {
 242         struct tuner *t = i2c_get_clientdata(c);
 243
 244         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
 245                 (t->mode_mask & tun_setup->mode_mask)) ||
 246                 tun_setup->addr == c->addr)) {
 247                         set_type(c, tun_setup->type, tun_setup->mode_mask);
 248         }
 249 }
 250
 251 static inline int check_mode(struct tuner *t, char *cmd)
 252 {
 253         if ((1 << t->mode & t->mode_mask) == 0) {
 254                 return EINVAL;
 255         }
 256
 257         switch (t->mode) {
 258         case V4L2_TUNER_RADIO:
 259                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
 260                 break;
 261         case V4L2_TUNER_ANALOG_TV:
 262                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
 263                 break;
 264         case V4L2_TUNER_DIGITAL_TV:
 265                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
 266                 break;
 267         }
 268         return 0;
 269 }
 270
 271 /* get more precise norm info from insmod option */
 272 static int tuner_fixup_std(struct tuner *t)
 273 {
 274         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 275                 switch (pal[0]) {
 276                 case 'b':
 277                 case 'B':
 278                 case 'g':
 279                 case 'G':
 280                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 281                         t->std = V4L2_STD_PAL_BG;
 282                         break;
 283                 case 'i':
 284                 case 'I':
 285                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 286                         t->std = V4L2_STD_PAL_I;
 287                         break;
 288                 case 'd':
 289                 case 'D':
 290                 case 'k':
 291                 case 'K':
 292                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 293                         t->std = V4L2_STD_PAL_DK;
 294                         break;
 295                 case 'M':
 296                 case 'm':
 297                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 298                         t->std = V4L2_STD_PAL_M;
 299                         break;
 300                 case 'N':
 301                 case 'n':
 302                         if (pal[1] == 'c' || pal[1] == 'C') {
 303                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
 304                                 t->std = V4L2_STD_PAL_Nc;
 305                         } else {
 306                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 307                                 t->std = V4L2_STD_PAL_N;
 308                         }
 309                         break;
 310                 case '-':
 311                         /* default parameter, do nothing */
 312                         break;
 313                 default:
 314                         tuner_warn ("pal= argument not recognised\n");
 315                         break;
 316                 }
 317         }
 318         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 319                 switch (secam[0]) {
 320                 case 'b':
 321                 case 'B':
 322                 case 'g':
 323                 case 'G':
 324                 case 'h':
 325                 case 'H':
 326                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
 327                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
 328                         break;
 329                 case 'd':
 330                 case 'D':
 331                 case 'k':
 332                 case 'K':
 333                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 334                         t->std = V4L2_STD_SECAM_DK;
 335                         break;
 336                 case 'l':
 337                 case 'L':
 338                         if ((secam[1]=='C')||(secam[1]=='c')) {
 339                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
 340                                 t->std = V4L2_STD_SECAM_LC;
 341                         } else {
 342                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 343                                 t->std = V4L2_STD_SECAM_L;
 344                         }
 345                         break;
 346                 case '-':
 347                         /* default parameter, do nothing */
 348                         break;
 349                 default:
 350                         tuner_warn ("secam= argument not recognised\n");
 351                         break;
 352                 }
 353         }
 354
 355         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
 356                 switch (ntsc[0]) {
 357                 case 'm':
 358                 case 'M':
 359                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
 360                         t->std = V4L2_STD_NTSC_M;
 361                         break;
 362                 case 'j':
 363                 case 'J':
 364                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
 365                         t->std = V4L2_STD_NTSC_M_JP;
 366                         break;
 367                 case 'k':
 368                 case 'K':
 369                         tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
 370                         t->std = V4L2_STD_NTSC_M_KR;
 371                         break;
 372                 case '-':
 373                         /* default parameter, do nothing */
 374                         break;
 375                 default:
 376                         tuner_info("ntsc= argument not recognised\n");
 377                         break;
 378                 }
 379         }
 380         return 0;
 381 }
 382
 383 static void tuner_status(struct i2c_client *client)
 384 {
 385         struct tuner *t = i2c_get_clientdata(client);
 386         unsigned long freq, freq_fraction;
 387         const char *p;
 388
 389         switch (t->mode) {
 390                 case V4L2_TUNER_RADIO:      p = "radio"; break;
 391                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
 392                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
 393                 default: p = "undefined"; break;
 394         }
 395         if (t->mode == V4L2_TUNER_RADIO) {
 396                 freq = t->radio_freq / 16000;
 397                 freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
 398         } else {
 399                 freq = t->tv_freq / 16;
 400                 freq_fraction = (t->tv_freq % 16) * 100 / 16;
 401         }
 402         tuner_info("Tuner mode:      %s\n", p);
 403         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
 404         tuner_info("Standard:        0x%08lx\n", (unsigned long)t->std);
 405         if (t->mode != V4L2_TUNER_RADIO)
 406                return;
 407         if (t->has_signal) {
 408                 tuner_info("Signal strength: %d\n", t->has_signal(client));
 409         }
 410         if (t->is_stereo) {
 411                 tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
 412         }
 413 }
 414
 415 /* ---------------------------------------------------------------------- */
 416
 417 /* static var Used only in tuner_attach and tuner_probe */
 418 static unsigned default_mode_mask;
 419
 420 /* During client attach, set_type is called by adapter's attach_inform callback.
 421    set_type must then be completed by tuner_attach.
 422  */
 423 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 424 {
 425         struct tuner *t;
 426
 427         client_template.adapter = adap;
 428         client_template.addr = addr;
 429
 430         t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
 431         if (NULL == t)
 432                 return -ENOMEM;
 433         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 434         i2c_set_clientdata(&t->i2c, t);
 435         t->type = UNSET;
 436         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 437         t->audmode = V4L2_TUNER_MODE_STEREO;
 438         t->mode_mask = T_UNINITIALIZED;
 439         if (tuner_debug_old) {
 440                 tuner_debug = tuner_debug_old;
 441                 printk(KERN_ERR "tuner: tuner_debug is deprecated and will be removed in 2.6.17.\n");
 442                 printk(KERN_ERR "tuner: use the debug option instead.\n");
 443         }
 444
 445         if (show_i2c) {
 446                 unsigned char buffer[16];
 447                 int i,rc;
 448
 449                 memset(buffer, 0, sizeof(buffer));
 450                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 451                 tuner_info("I2C RECV = ");
 452                 for (i=0;i<rc;i++)
 453                         printk("%02x ",buffer[i]);
 454                 printk("\n");
 455         }
 456         /* autodetection code based on the i2c addr */
 457         if (!no_autodetect) {
 458                 switch (addr) {
 459                 case 0x42:
 460                 case 0x43:
 461                 case 0x4a:
 462                 case 0x4b:
 463                         /* If chip is not tda8290, don't register.
 464                            since it can be tda9887*/
 465                         if (tda8290_probe(&t->i2c) != 0) {
 466                                 tuner_dbg("chip at addr %x is not a tda8290\n", addr);
 467                                 kfree(t);
 468                                 return 0;
 469                         }
 470                         break;
 471                 case 0x60:
 472                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 473                                 t->type = TUNER_TEA5767;
 474                                 t->mode_mask = T_RADIO;
 475                                 t->mode = T_STANDBY;
 476                                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 477                                 default_mode_mask &= ~T_RADIO;
 478
 479                                 goto register_client;
 480                         }
 481                         break;
 482                 }
 483         }
 484
 485         /* Initializes only the first adapter found */
 486         if (default_mode_mask != T_UNINITIALIZED) {
 487                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 488                 t->mode_mask = default_mode_mask;
 489                 t->tv_freq = 400 * 16; /* Sets freq to VHF High */
 490                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 491                 default_mode_mask = T_UNINITIALIZED;
 492         }
 493
 494         /* Should be just before return */
 495 register_client:
 496         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 497         i2c_attach_client (&t->i2c);
 498         set_type (&t->i2c,t->type, t->mode_mask);
 499         return 0;
 500 }
 501
 502 static int tuner_probe(struct i2c_adapter *adap)
 503 {
 504         if (0 != addr) {
 505                 normal_i2c[0] = addr;
 506                 normal_i2c[1] = I2C_CLIENT_END;
 507         }
 508
 509         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 510
 511         if (adap->class & I2C_CLASS_TV_ANALOG)
 512                 return i2c_probe(adap, &addr_data, tuner_attach);
 513         return 0;
 514 }
 515
 516 static int tuner_detach(struct i2c_client *client)
 517 {
 518         struct tuner *t = i2c_get_clientdata(client);
 519         int err;
 520
 521         err = i2c_detach_client(&t->i2c);
 522         if (err) {
 523                 tuner_warn
 524                     ("Client deregistration failed, client not detached.\n");
 525                 return err;
 526         }
 527
 528         kfree(t);
 529         return 0;
 530 }
 531
 532 /*
 533  * Switch tuner to other mode. If tuner support both tv and radio,
 534  * set another frequency to some value (This is needed for some pal
 535  * tuners to avoid locking). Otherwise, just put second tuner in
 536  * standby mode.
 537  */
 538
 539 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 540 {
 541         if (mode == t->mode)
 542                 return 0;
 543
 544         t->mode = mode;
 545
 546         if (check_mode(t, cmd) == EINVAL) {
 547                 t->mode = T_STANDBY;
 548                 if (t->standby)
 549                         t->standby (client);
 550                 return EINVAL;
 551         }
 552         return 0;
 553 }
 554
 555 #define switch_v4l2()   if (!t->using_v4l2) \
 556                             tuner_dbg("switching to v4l2\n"); \
 557                         t->using_v4l2 = 1;
 558
 559 static inline int check_v4l2(struct tuner *t)
 560 {
 561         /* bttv still uses both v4l1 and v4l2 calls to the tuner (v4l2 for
 562            TV, v4l1 for radio), until that is fixed this code is disabled.
 563            Otherwise the radio (v4l1) wouldn't tune after using the TV (v4l2)
 564            first. */
 565         return 0;
 566 }
 567
 568 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 569 {
 570         struct tuner *t = i2c_get_clientdata(client);
 571
 572         if (tuner_debug>1)
 573                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
 574
 575         switch (cmd) {
 576         /* --- configuration --- */
 577         case TUNER_SET_TYPE_ADDR:
 578                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 579                                 ((struct tuner_setup *)arg)->type,
 580                                 ((struct tuner_setup *)arg)->addr,
 581                                 ((struct tuner_setup *)arg)->mode_mask);
 582
 583                 set_addr(client, (struct tuner_setup *)arg);
 584                 break;
 585         case AUDC_SET_RADIO:
 586                 if (set_mode(client, t, V4L2_TUNER_RADIO, "AUDC_SET_RADIO")
 587                                 == EINVAL)
 588                         return 0;
 589                 if (t->radio_freq)
 590                         set_freq(client, t->radio_freq);
 591                 break;
 592         case TUNER_SET_STANDBY:
 593                 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 594                         return 0;
 595                 if (t->standby)
 596                         t->standby (client);
 597                 break;
 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         /* --- v4l ioctls --- */
 608         /* take care: bttv does userspace copying, we'll get a
 609            kernel pointer here... */
 610         case VIDIOCSCHAN:
 611                 {
 612                         static const v4l2_std_id map[] = {
 613                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 614                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 615                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 616                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 617                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 618                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 619                         };
 620                         struct video_channel *vc = arg;
 621
 622                         if (check_v4l2(t) == EINVAL)
 623                                 return 0;
 624
 625                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 626                                 return 0;
 627
 628                         if (vc->norm < ARRAY_SIZE(map))
 629                                 t->std = map[vc->norm];
 630                         tuner_fixup_std(t);
 631                         if (t->tv_freq)
 632                                 set_tv_freq(client, t->tv_freq);
 633                         return 0;
 634                 }
 635         case VIDIOCSFREQ:
 636                 {
 637                         unsigned long *v = arg;
 638
 639                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 640                                 return 0;
 641                         if (check_v4l2(t) == EINVAL)
 642                                 return 0;
 643
 644                         set_freq(client, *v);
 645                         return 0;
 646                 }
 647         case VIDIOCGTUNER:
 648                 {
 649                         struct video_tuner *vt = arg;
 650
 651                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 652                                 return 0;
 653                         if (check_v4l2(t) == EINVAL)
 654                                 return 0;
 655
 656                         if (V4L2_TUNER_RADIO == t->mode) {
 657                                 if (t->has_signal)
 658                                         vt->signal = t->has_signal(client);
 659                                 if (t->is_stereo) {
 660                                         if (t->is_stereo(client))
 661                                                 vt->flags |=
 662                                                     VIDEO_TUNER_STEREO_ON;
 663                                         else
 664                                                 vt->flags &=
 665                                                     ~VIDEO_TUNER_STEREO_ON;
 666                                 }
 667                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 668
 669                                 vt->rangelow = radio_range[0] * 16000;
 670                                 vt->rangehigh = radio_range[1] * 16000;
 671
 672                         } else {
 673                                 vt->rangelow = tv_range[0] * 16;
 674                                 vt->rangehigh = tv_range[1] * 16;
 675                         }
 676
 677                         return 0;
 678                 }
 679         case VIDIOCGAUDIO:
 680                 {
 681                         struct video_audio *va = arg;
 682
 683                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 684                                 return 0;
 685                         if (check_v4l2(t) == EINVAL)
 686                                 return 0;
 687
 688                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 689                                 va->mode = t->is_stereo(client)
 690                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 691                         return 0;
 692                 }
 693
 694         case VIDIOC_S_STD:
 695                 {
 696                         v4l2_std_id *id = arg;
 697
 698                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 699                                         == EINVAL)
 700                                 return 0;
 701
 702                         switch_v4l2();
 703
 704                         t->std = *id;
 705                         tuner_fixup_std(t);
 706                         if (t->tv_freq)
 707                                 set_freq(client, t->tv_freq);
 708                         break;
 709                 }
 710         case VIDIOC_S_FREQUENCY:
 711                 {
 712                         struct v4l2_frequency *f = arg;
 713
 714                         switch_v4l2();
 715                         if ((V4L2_TUNER_RADIO == f->type && V4L2_TUNER_RADIO != t->mode)
 716                                 || (V4L2_TUNER_DIGITAL_TV == f->type
 717                                         && V4L2_TUNER_DIGITAL_TV != t->mode)) {
 718                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 719                                             == EINVAL)
 720                                         return 0;
 721                         }
 722                         set_freq(client,f->frequency);
 723
 724                         break;
 725                 }
 726         case VIDIOC_G_FREQUENCY:
 727                 {
 728                         struct v4l2_frequency *f = arg;
 729
 730                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 731                                 return 0;
 732                         switch_v4l2();
 733                         f->type = t->mode;
 734                         f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
 735                                 t->radio_freq : t->tv_freq;
 736                         break;
 737                 }
 738         case VIDIOC_G_TUNER:
 739                 {
 740                         struct v4l2_tuner *tuner = arg;
 741
 742                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 743                                 return 0;
 744                         switch_v4l2();
 745
 746                         tuner->type = t->mode;
 747                         if (t->mode == V4L2_TUNER_ANALOG_TV)
 748                                 tuner->capability |= V4L2_TUNER_CAP_NORM;
 749                         if (t->mode != V4L2_TUNER_RADIO) {
 750                                 tuner->rangelow = tv_range[0] * 16;
 751                                 tuner->rangehigh = tv_range[1] * 16;
 752                                 break;
 753                         }
 754
 755                         /* radio mode */
 756                         if (t->has_signal)
 757                                 tuner->signal = t->has_signal(client);
 758
 759                         tuner->rxsubchans =
 760                                 V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 761                         if (t->is_stereo) {
 762                                 tuner->rxsubchans = t->is_stereo(client) ?
 763                                         V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 764                         }
 765
 766                         tuner->capability |=
 767                             V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 768                         tuner->audmode = t->audmode;
 769                         tuner->rangelow = radio_range[0] * 16000;
 770                         tuner->rangehigh = radio_range[1] * 16000;
 771                         break;
 772                 }
 773         case VIDIOC_S_TUNER:
 774                 {
 775                         struct v4l2_tuner *tuner = arg;
 776
 777                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 778                                 return 0;
 779
 780                         switch_v4l2();
 781
 782                         /* do nothing unless we're a radio tuner */
 783                         if (t->mode != V4L2_TUNER_RADIO)
 784                                 break;
 785                         t->audmode = tuner->audmode;
 786                         set_radio_freq(client, t->radio_freq);
 787                         break;
 788                 }
 789         case VIDIOC_LOG_STATUS:
 790                 tuner_status(client);
 791                 break;
 792         }
 793
 794         return 0;
 795 }
 796
 797 static int tuner_suspend(struct device *dev, pm_message_t state)
 798 {
 799         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 800         struct tuner *t = i2c_get_clientdata (c);
 801
 802         tuner_dbg ("suspend\n");
 803         /* FIXME: power down ??? */
 804         return 0;
 805 }
 806
 807 static int tuner_resume(struct device *dev)
 808 {
 809         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 810         struct tuner *t = i2c_get_clientdata (c);
 811
 812         tuner_dbg ("resume\n");
 813         if (V4L2_TUNER_RADIO == t->mode) {
 814                 if (t->radio_freq)
 815                         set_freq(c, t->radio_freq);
 816         } else {
 817                 if (t->tv_freq)
 818                         set_freq(c, t->tv_freq);
 819         }
 820         return 0;
 821 }
 822
 823 /* ----------------------------------------------------------------------- */
 824
 825 static struct i2c_driver driver = {
 826         .id = I2C_DRIVERID_TUNER,
 827         .attach_adapter = tuner_probe,
 828         .detach_client = tuner_detach,
 829         .command = tuner_command,
 830         .driver = {
 831                 .name    = "tuner",
 832                 .suspend = tuner_suspend,
 833                 .resume  = tuner_resume,
 834         },
 835 };
 836 static struct i2c_client client_template = {
 837         .name = "(tuner unset)",
 838         .driver = &driver,
 839 };
 840
 841 static int __init tuner_init_module(void)
 842 {
 843         return i2c_add_driver(&driver);
 844 }
 845
 846 static void __exit tuner_cleanup_module(void)
 847 {
 848         i2c_del_driver(&driver);
 849 }
 850
 851 module_init(tuner_init_module);
 852 module_exit(tuner_cleanup_module);
 853
 854 /*
 855  * Overrides for Emacs so that we follow Linus's tabbing style.
 856  * ---------------------------------------------------------------------------
 857  * Local variables:
 858  * c-basic-offset: 8
 859  * End:
 860  */