git.oblomov.eu Git - linux-2.6/blob - 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%08llx\n", 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         if (t->using_v4l2) {
 562                 tuner_dbg ("ignore v4l1 call\n");
 563                 return EINVAL;
 564         }
 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_RADIO) {
 748                                 tuner->rangelow = tv_range[0] * 16;
 749                                 tuner->rangehigh = tv_range[1] * 16;
 750                                 break;
 751                         }
 752
 753                         /* radio mode */
 754                         if (t->has_signal)
 755                                 tuner->signal = t->has_signal(client);
 756
 757                         tuner->rxsubchans =
 758                                 V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 759                         if (t->is_stereo) {
 760                                 tuner->rxsubchans = t->is_stereo(client) ?
 761                                         V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 762                         }
 763
 764                         tuner->capability |=
 765                             V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 766                         tuner->audmode = t->audmode;
 767                         tuner->rangelow = radio_range[0] * 16000;
 768                         tuner->rangehigh = radio_range[1] * 16000;
 769                         break;
 770                 }
 771         case VIDIOC_S_TUNER:
 772                 {
 773                         struct v4l2_tuner *tuner = arg;
 774
 775                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 776                                 return 0;
 777
 778                         switch_v4l2();
 779
 780                         /* do nothing unless we're a radio tuner */
 781                         if (t->mode != V4L2_TUNER_RADIO)
 782                                 break;
 783                         t->audmode = tuner->audmode;
 784                         set_radio_freq(client, t->radio_freq);
 785                         break;
 786                 }
 787         case VIDIOC_LOG_STATUS:
 788                 tuner_status(client);
 789                 break;
 790         }
 791
 792         return 0;
 793 }
 794
 795 static int tuner_suspend(struct device *dev, pm_message_t state)
 796 {
 797         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 798         struct tuner *t = i2c_get_clientdata (c);
 799
 800         tuner_dbg ("suspend\n");
 801         /* FIXME: power down ??? */
 802         return 0;
 803 }
 804
 805 static int tuner_resume(struct device *dev)
 806 {
 807         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 808         struct tuner *t = i2c_get_clientdata (c);
 809
 810         tuner_dbg ("resume\n");
 811         if (V4L2_TUNER_RADIO == t->mode) {
 812                 if (t->radio_freq)
 813                         set_freq(c, t->radio_freq);
 814         } else {
 815                 if (t->tv_freq)
 816                         set_freq(c, t->tv_freq);
 817         }
 818         return 0;
 819 }
 820
 821 /* ----------------------------------------------------------------------- */
 822
 823 static struct i2c_driver driver = {
 824         .id = I2C_DRIVERID_TUNER,
 825         .attach_adapter = tuner_probe,
 826         .detach_client = tuner_detach,
 827         .command = tuner_command,
 828         .driver = {
 829                 .name    = "tuner",
 830                 .suspend = tuner_suspend,
 831                 .resume  = tuner_resume,
 832         },
 833 };
 834 static struct i2c_client client_template = {
 835         .name = "(tuner unset)",
 836         .driver = &driver,
 837 };
 838
 839 static int __init tuner_init_module(void)
 840 {
 841         return i2c_add_driver(&driver);
 842 }
 843
 844 static void __exit tuner_cleanup_module(void)
 845 {
 846         i2c_del_driver(&driver);
 847 }
 848
 849 module_init(tuner_init_module);
 850 module_exit(tuner_cleanup_module);
 851
 852 /*
 853  * Overrides for Emacs so that we follow Linus's tabbing style.
 854  * ---------------------------------------------------------------------------
 855  * Local variables:
 856  * c-basic-offset: 8
 857  * End:
 858  */