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         switch (t->type) {
 177         case TUNER_MT2032:
 178                 microtune_init(c);
 179                 break;
 180         case TUNER_PHILIPS_TDA8290:
 181                 tda8290_init(c);
 182                 break;
 183         case TUNER_TEA5767:
 184                 if (tea5767_tuner_init(c) == EINVAL) {
 185                         t->type = TUNER_ABSENT;
 186                         t->mode_mask = T_UNINITIALIZED;
 187                         return;
 188                 }
 189                 t->mode_mask = T_RADIO;
 190                 break;
 191         case TUNER_PHILIPS_FMD1216ME_MK3:
 192                 buffer[0] = 0x0b;
 193                 buffer[1] = 0xdc;
 194                 buffer[2] = 0x9c;
 195                 buffer[3] = 0x60;
 196                 i2c_master_send(c, buffer, 4);
 197                 mdelay(1);
 198                 buffer[2] = 0x86;
 199                 buffer[3] = 0x54;
 200                 i2c_master_send(c, buffer, 4);
 201                 default_tuner_init(c);
 202                 break;
 203         case TUNER_LG_TDVS_H062F:
 204                 /* Set the Auxiliary Byte. */
 205                 buffer[2] &= ~0x20;
 206                 buffer[2] |= 0x18;
 207                 buffer[3] = 0x20;
 208                 i2c_master_send(c, buffer, 4);
 209                 default_tuner_init(c);
 210                 break;
 211         case TUNER_PHILIPS_TD1316:
 212                 buffer[0] = 0x0b;
 213                 buffer[1] = 0xdc;
 214                 buffer[2] = 0x86;
 215                 buffer[3] = 0xa4;
 216                 i2c_master_send(c,buffer,4);
 217                 default_tuner_init(c);
 218                 break;
 219 #ifdef CONFIG_XC3028
 220         case TUNER_XCEIVE_XC3028:
 221                 xc3028_init(c);
 222                 break;
 223 #endif
 224         default:
 225                 default_tuner_init(c);
 226                 break;
 227         }
 228
 229         if (t->mode_mask == T_UNINITIALIZED)
 230                 t->mode_mask = new_mode_mask;
 231
 232         set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? t->radio_freq : t->tv_freq);
 233         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 234                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
 235                   t->mode_mask);
 236 }
 237
 238 /*
 239  * This function apply tuner config to tuner specified
 240  * by tun_setup structure. I addr is unset, then admin status
 241  * and tun addr status is more precise then current status,
 242  * it's applied. Otherwise status and type are applied only to
 243  * tuner with exactly the same addr.
 244 */
 245
 246 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 247 {
 248         struct tuner *t = i2c_get_clientdata(c);
 249
 250         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
 251                 (t->mode_mask & tun_setup->mode_mask)) ||
 252                 tun_setup->addr == c->addr)) {
 253                         set_type(c, tun_setup->type, tun_setup->mode_mask);
 254         }
 255 }
 256
 257 static inline int check_mode(struct tuner *t, char *cmd)
 258 {
 259         if ((1 << t->mode & t->mode_mask) == 0) {
 260                 return EINVAL;
 261         }
 262
 263         switch (t->mode) {
 264         case V4L2_TUNER_RADIO:
 265                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
 266                 break;
 267         case V4L2_TUNER_ANALOG_TV:
 268                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
 269                 break;
 270         case V4L2_TUNER_DIGITAL_TV:
 271                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
 272                 break;
 273         }
 274         return 0;
 275 }
 276
 277 /* get more precise norm info from insmod option */
 278 static int tuner_fixup_std(struct tuner *t)
 279 {
 280         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 281                 switch (pal[0]) {
 282                 case 'b':
 283                 case 'B':
 284                 case 'g':
 285                 case 'G':
 286                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 287                         t->std = V4L2_STD_PAL_BG;
 288                         break;
 289                 case 'i':
 290                 case 'I':
 291                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 292                         t->std = V4L2_STD_PAL_I;
 293                         break;
 294                 case 'd':
 295                 case 'D':
 296                 case 'k':
 297                 case 'K':
 298                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 299                         t->std = V4L2_STD_PAL_DK;
 300                         break;
 301                 case 'M':
 302                 case 'm':
 303                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 304                         t->std = V4L2_STD_PAL_M;
 305                         break;
 306                 case 'N':
 307                 case 'n':
 308                         if (pal[1] == 'c' || pal[1] == 'C') {
 309                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
 310                                 t->std = V4L2_STD_PAL_Nc;
 311                         } else {
 312                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 313                                 t->std = V4L2_STD_PAL_N;
 314                         }
 315                         break;
 316                 case '-':
 317                         /* default parameter, do nothing */
 318                         break;
 319                 default:
 320                         tuner_warn ("pal= argument not recognised\n");
 321                         break;
 322                 }
 323         }
 324         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 325                 switch (secam[0]) {
 326                 case 'b':
 327                 case 'B':
 328                 case 'g':
 329                 case 'G':
 330                 case 'h':
 331                 case 'H':
 332                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
 333                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
 334                         break;
 335                 case 'd':
 336                 case 'D':
 337                 case 'k':
 338                 case 'K':
 339                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 340                         t->std = V4L2_STD_SECAM_DK;
 341                         break;
 342                 case 'l':
 343                 case 'L':
 344                         if ((secam[1]=='C')||(secam[1]=='c')) {
 345                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
 346                                 t->std = V4L2_STD_SECAM_LC;
 347                         } else {
 348                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 349                                 t->std = V4L2_STD_SECAM_L;
 350                         }
 351                         break;
 352                 case '-':
 353                         /* default parameter, do nothing */
 354                         break;
 355                 default:
 356                         tuner_warn ("secam= argument not recognised\n");
 357                         break;
 358                 }
 359         }
 360
 361         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
 362                 switch (ntsc[0]) {
 363                 case 'm':
 364                 case 'M':
 365                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
 366                         t->std = V4L2_STD_NTSC_M;
 367                         break;
 368                 case 'j':
 369                 case 'J':
 370                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
 371                         t->std = V4L2_STD_NTSC_M_JP;
 372                         break;
 373                 case 'k':
 374                 case 'K':
 375                         tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
 376                         t->std = V4L2_STD_NTSC_M_KR;
 377                         break;
 378                 case '-':
 379                         /* default parameter, do nothing */
 380                         break;
 381                 default:
 382                         tuner_info("ntsc= argument not recognised\n");
 383                         break;
 384                 }
 385         }
 386         return 0;
 387 }
 388
 389 static void tuner_status(struct i2c_client *client)
 390 {
 391         struct tuner *t = i2c_get_clientdata(client);
 392         unsigned long freq, freq_fraction;
 393         const char *p;
 394
 395         switch (t->mode) {
 396                 case V4L2_TUNER_RADIO:      p = "radio"; break;
 397                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
 398                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
 399                 default: p = "undefined"; break;
 400         }
 401         if (t->mode == V4L2_TUNER_RADIO) {
 402                 freq = t->radio_freq / 16000;
 403                 freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
 404         } else {
 405                 freq = t->tv_freq / 16;
 406                 freq_fraction = (t->tv_freq % 16) * 100 / 16;
 407         }
 408         tuner_info("Tuner mode:      %s\n", p);
 409         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
 410         tuner_info("Standard:        0x%08llx\n", t->std);
 411         if (t->mode != V4L2_TUNER_RADIO)
 412                return;
 413         if (t->has_signal) {
 414                 tuner_info("Signal strength: %d\n", t->has_signal(client));
 415         }
 416         if (t->is_stereo) {
 417                 tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
 418         }
 419 }
 420
 421 /* ---------------------------------------------------------------------- */
 422
 423 /* static var Used only in tuner_attach and tuner_probe */
 424 static unsigned default_mode_mask;
 425
 426 /* During client attach, set_type is called by adapter's attach_inform callback.
 427    set_type must then be completed by tuner_attach.
 428  */
 429 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 430 {
 431         struct tuner *t;
 432
 433         client_template.adapter = adap;
 434         client_template.addr = addr;
 435
 436         t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
 437         if (NULL == t)
 438                 return -ENOMEM;
 439         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 440         i2c_set_clientdata(&t->i2c, t);
 441         t->type = UNSET;
 442         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 443         t->audmode = V4L2_TUNER_MODE_STEREO;
 444         t->mode_mask = T_UNINITIALIZED;
 445         if (tuner_debug_old) {
 446                 tuner_debug = tuner_debug_old;
 447                 printk(KERN_ERR "tuner: tuner_debug is deprecated and will be removed in 2.6.17.\n");
 448                 printk(KERN_ERR "tuner: use the debug option instead.\n");
 449         }
 450
 451         if (show_i2c) {
 452                 unsigned char buffer[16];
 453                 int i,rc;
 454
 455                 memset(buffer, 0, sizeof(buffer));
 456                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 457                 tuner_info("I2C RECV = ");
 458                 for (i=0;i<rc;i++)
 459                         printk("%02x ",buffer[i]);
 460                 printk("\n");
 461         }
 462         /* autodetection code based on the i2c addr */
 463         if (!no_autodetect) {
 464                 switch (addr) {
 465                 case 0x42:
 466                 case 0x43:
 467                 case 0x4a:
 468                 case 0x4b:
 469                         /* If chip is not tda8290, don't register.
 470                            since it can be tda9887*/
 471                         if (tda8290_probe(&t->i2c) != 0) {
 472                                 tuner_dbg("chip at addr %x is not a tda8290\n", addr);
 473                                 kfree(t);
 474                                 return 0;
 475                         }
 476                         break;
 477                 case 0x60:
 478                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 479                                 t->type = TUNER_TEA5767;
 480                                 t->mode_mask = T_RADIO;
 481                                 t->mode = T_STANDBY;
 482                                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 483                                 default_mode_mask &= ~T_RADIO;
 484
 485                                 goto register_client;
 486                         }
 487                         break;
 488                 }
 489         }
 490
 491         /* Initializes only the first adapter found */
 492         if (default_mode_mask != T_UNINITIALIZED) {
 493                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 494                 t->mode_mask = default_mode_mask;
 495                 t->tv_freq = 400 * 16; /* Sets freq to VHF High */
 496                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 497                 default_mode_mask = T_UNINITIALIZED;
 498         }
 499
 500         /* Should be just before return */
 501 register_client:
 502         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 503         i2c_attach_client (&t->i2c);
 504         set_type (&t->i2c,t->type, t->mode_mask);
 505         return 0;
 506 }
 507
 508 static int tuner_probe(struct i2c_adapter *adap)
 509 {
 510         if (0 != addr) {
 511                 normal_i2c[0] = addr;
 512                 normal_i2c[1] = I2C_CLIENT_END;
 513         }
 514
 515         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 516
 517         if (adap->class & I2C_CLASS_TV_ANALOG)
 518                 return i2c_probe(adap, &addr_data, tuner_attach);
 519         return 0;
 520 }
 521
 522 static int tuner_detach(struct i2c_client *client)
 523 {
 524         struct tuner *t = i2c_get_clientdata(client);
 525         int err;
 526
 527         err = i2c_detach_client(&t->i2c);
 528         if (err) {
 529                 tuner_warn
 530                     ("Client deregistration failed, client not detached.\n");
 531                 return err;
 532         }
 533
 534         kfree(t);
 535         return 0;
 536 }
 537
 538 /*
 539  * Switch tuner to other mode. If tuner support both tv and radio,
 540  * set another frequency to some value (This is needed for some pal
 541  * tuners to avoid locking). Otherwise, just put second tuner in
 542  * standby mode.
 543  */
 544
 545 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 546 {
 547         if (mode == t->mode)
 548                 return 0;
 549
 550         t->mode = mode;
 551
 552         if (check_mode(t, cmd) == EINVAL) {
 553                 t->mode = T_STANDBY;
 554                 if (t->standby)
 555                         t->standby (client);
 556                 return EINVAL;
 557         }
 558         return 0;
 559 }
 560
 561 #define switch_v4l2()   if (!t->using_v4l2) \
 562                             tuner_dbg("switching to v4l2\n"); \
 563                         t->using_v4l2 = 1;
 564
 565 static inline int check_v4l2(struct tuner *t)
 566 {
 567         if (t->using_v4l2) {
 568                 tuner_dbg ("ignore v4l1 call\n");
 569                 return EINVAL;
 570         }
 571         return 0;
 572 }
 573
 574 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 575 {
 576         struct tuner *t = i2c_get_clientdata(client);
 577
 578         if (tuner_debug>1)
 579                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
 580
 581         switch (cmd) {
 582         /* --- configuration --- */
 583         case TUNER_SET_TYPE_ADDR:
 584                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 585                                 ((struct tuner_setup *)arg)->type,
 586                                 ((struct tuner_setup *)arg)->addr,
 587                                 ((struct tuner_setup *)arg)->mode_mask);
 588
 589                 set_addr(client, (struct tuner_setup *)arg);
 590                 break;
 591         case AUDC_SET_RADIO:
 592                 if (set_mode(client, t, V4L2_TUNER_RADIO, "AUDC_SET_RADIO")
 593                                 == EINVAL)
 594                         return 0;
 595                 if (t->radio_freq)
 596                         set_freq(client, t->radio_freq);
 597                 break;
 598         case TUNER_SET_STANDBY:
 599                 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 600                         return 0;
 601                 if (t->standby)
 602                         t->standby (client);
 603                 break;
 604         case VIDIOCSAUDIO:
 605                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 606                         return 0;
 607                 if (check_v4l2(t) == EINVAL)
 608                         return 0;
 609
 610                 /* Should be implemented, since bttv calls it */
 611                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 612                 break;
 613         /* --- v4l ioctls --- */
 614         /* take care: bttv does userspace copying, we'll get a
 615            kernel pointer here... */
 616         case VIDIOCSCHAN:
 617                 {
 618                         static const v4l2_std_id map[] = {
 619                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 620                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 621                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 622                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 623                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 624                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 625                         };
 626                         struct video_channel *vc = arg;
 627
 628                         if (check_v4l2(t) == EINVAL)
 629                                 return 0;
 630
 631                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 632                                 return 0;
 633
 634                         if (vc->norm < ARRAY_SIZE(map))
 635                                 t->std = map[vc->norm];
 636                         tuner_fixup_std(t);
 637                         if (t->tv_freq)
 638                                 set_tv_freq(client, t->tv_freq);
 639                         return 0;
 640                 }
 641         case VIDIOCSFREQ:
 642                 {
 643                         unsigned long *v = arg;
 644
 645                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 646                                 return 0;
 647                         if (check_v4l2(t) == EINVAL)
 648                                 return 0;
 649
 650                         set_freq(client, *v);
 651                         return 0;
 652                 }
 653         case VIDIOCGTUNER:
 654                 {
 655                         struct video_tuner *vt = arg;
 656
 657                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 658                                 return 0;
 659                         if (check_v4l2(t) == EINVAL)
 660                                 return 0;
 661
 662                         if (V4L2_TUNER_RADIO == t->mode) {
 663                                 if (t->has_signal)
 664                                         vt->signal = t->has_signal(client);
 665                                 if (t->is_stereo) {
 666                                         if (t->is_stereo(client))
 667                                                 vt->flags |=
 668                                                     VIDEO_TUNER_STEREO_ON;
 669                                         else
 670                                                 vt->flags &=
 671                                                     ~VIDEO_TUNER_STEREO_ON;
 672                                 }
 673                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 674
 675                                 vt->rangelow = radio_range[0] * 16000;
 676                                 vt->rangehigh = radio_range[1] * 16000;
 677
 678                         } else {
 679                                 vt->rangelow = tv_range[0] * 16;
 680                                 vt->rangehigh = tv_range[1] * 16;
 681                         }
 682
 683                         return 0;
 684                 }
 685         case VIDIOCGAUDIO:
 686                 {
 687                         struct video_audio *va = arg;
 688
 689                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 690                                 return 0;
 691                         if (check_v4l2(t) == EINVAL)
 692                                 return 0;
 693
 694                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 695                                 va->mode = t->is_stereo(client)
 696                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 697                         return 0;
 698                 }
 699
 700         case VIDIOC_S_STD:
 701                 {
 702                         v4l2_std_id *id = arg;
 703
 704                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 705                                         == EINVAL)
 706                                 return 0;
 707
 708                         switch_v4l2();
 709
 710                         t->std = *id;
 711                         tuner_fixup_std(t);
 712                         if (t->tv_freq)
 713                                 set_freq(client, t->tv_freq);
 714                         break;
 715                 }
 716         case VIDIOC_S_FREQUENCY:
 717                 {
 718                         struct v4l2_frequency *f = arg;
 719
 720                         switch_v4l2();
 721                         if (V4L2_TUNER_RADIO == f->type &&
 722                             V4L2_TUNER_RADIO != t->mode) {
 723                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 724                                             == EINVAL)
 725                                         return 0;
 726                         }
 727                         set_freq(client,f->frequency);
 728
 729                         break;
 730                 }
 731         case VIDIOC_G_FREQUENCY:
 732                 {
 733                         struct v4l2_frequency *f = arg;
 734
 735                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 736                                 return 0;
 737                         switch_v4l2();
 738                         f->type = t->mode;
 739                         f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
 740                                 t->radio_freq : t->tv_freq;
 741                         break;
 742                 }
 743         case VIDIOC_G_TUNER:
 744                 {
 745                         struct v4l2_tuner *tuner = arg;
 746
 747                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 748                                 return 0;
 749                         switch_v4l2();
 750
 751                         tuner->type = t->mode;
 752                         if (t->mode != V4L2_TUNER_RADIO) {
 753                                 tuner->rangelow = tv_range[0] * 16;
 754                                 tuner->rangehigh = tv_range[1] * 16;
 755                                 break;
 756                         }
 757
 758                         /* radio mode */
 759                         if (t->has_signal)
 760                                 tuner->signal = t->has_signal(client);
 761
 762                         tuner->rxsubchans =
 763                                 V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 764                         if (t->is_stereo) {
 765                                 tuner->rxsubchans = t->is_stereo(client) ?
 766                                         V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 767                         }
 768
 769                         tuner->capability |=
 770                             V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 771                         tuner->audmode = t->audmode;
 772                         tuner->rangelow = radio_range[0] * 16000;
 773                         tuner->rangehigh = radio_range[1] * 16000;
 774                         break;
 775                 }
 776         case VIDIOC_S_TUNER:
 777                 {
 778                         struct v4l2_tuner *tuner = arg;
 779
 780                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 781                                 return 0;
 782
 783                         switch_v4l2();
 784
 785                         /* do nothing unless we're a radio tuner */
 786                         if (t->mode != V4L2_TUNER_RADIO)
 787                                 break;
 788                         t->audmode = tuner->audmode;
 789                         set_radio_freq(client, t->radio_freq);
 790                         break;
 791                 }
 792         case VIDIOC_LOG_STATUS:
 793                 tuner_status(client);
 794                 break;
 795         }
 796
 797         return 0;
 798 }
 799
 800 static int tuner_suspend(struct device *dev, pm_message_t state)
 801 {
 802         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 803         struct tuner *t = i2c_get_clientdata (c);
 804
 805         tuner_dbg ("suspend\n");
 806         /* FIXME: power down ??? */
 807         return 0;
 808 }
 809
 810 static int tuner_resume(struct device *dev)
 811 {
 812         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 813         struct tuner *t = i2c_get_clientdata (c);
 814
 815         tuner_dbg ("resume\n");
 816         if (V4L2_TUNER_RADIO == t->mode) {
 817                 if (t->radio_freq)
 818                         set_freq(c, t->radio_freq);
 819         } else {
 820                 if (t->tv_freq)
 821                         set_freq(c, t->tv_freq);
 822         }
 823         return 0;
 824 }
 825
 826 /* ----------------------------------------------------------------------- */
 827
 828 static struct i2c_driver driver = {
 829         .id = I2C_DRIVERID_TUNER,
 830         .attach_adapter = tuner_probe,
 831         .detach_client = tuner_detach,
 832         .command = tuner_command,
 833         .driver = {
 834                 .name    = "tuner",
 835                 .suspend = tuner_suspend,
 836                 .resume  = tuner_resume,
 837         },
 838 };
 839 static struct i2c_client client_template = {
 840         .name = "(tuner unset)",
 841         .driver = &driver,
 842 };
 843
 844 static int __init tuner_init_module(void)
 845 {
 846         return i2c_add_driver(&driver);
 847 }
 848
 849 static void __exit tuner_cleanup_module(void)
 850 {
 851         i2c_del_driver(&driver);
 852 }
 853
 854 module_init(tuner_init_module);
 855 module_exit(tuner_cleanup_module);
 856
 857 /*
 858  * Overrides for Emacs so that we follow Linus's tabbing style.
 859  * ---------------------------------------------------------------------------
 860  * Local variables:
 861  * c-basic-offset: 8
 862  * End:
 863  */