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 #include <media/audiochip.h>
  25
  26 #include "msp3400.h"
  27
  28 #define UNSET (-1U)
  29
  30 /* standard i2c insmod options */
  31 static unsigned short normal_i2c[] = {
  32         0x42, 0x43, 0x4a, 0x4b,                 /* tda8290 */
  33         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
  34         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  35         I2C_CLIENT_END
  36 };
  37
  38 I2C_CLIENT_INSMOD;
  39
  40 /* insmod options used at init time => read/only */
  41 static unsigned int addr = 0;
  42 static unsigned int no_autodetect = 0;
  43 static unsigned int show_i2c = 0;
  44
  45 /* insmod options used at runtime => read/write */
  46 unsigned int tuner_debug = 0;
  47
  48 static unsigned int tv_range[2] = { 44, 958 };
  49 static unsigned int radio_range[2] = { 65, 108 };
  50
  51 static char pal[] = "--";
  52 static char secam[] = "--";
  53 static char ntsc[] = "-";
  54
  55 module_param(addr, int, 0444);
  56 module_param(no_autodetect, int, 0444);
  57 module_param(show_i2c, int, 0444);
  58 module_param(tuner_debug, int, 0644);
  59
  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->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         }
  93         t->tv_freq(c, freq);
  94 }
  95
  96 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
  97 {
  98         struct tuner *t = i2c_get_clientdata(c);
  99
 100         if (t->type == UNSET) {
 101                 tuner_warn ("tuner type not set\n");
 102                 return;
 103         }
 104         if (NULL == t->radio_freq) {
 105                 tuner_warn ("tuner has no way to set radio frequency\n");
 106                 return;
 107         }
 108         if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
 109                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
 110                            freq / 16000, freq % 16000 * 100 / 16000,
 111                            radio_range[0], radio_range[1]);
 112         }
 113
 114         t->radio_freq(c, freq);
 115         return;
 116 }
 117
 118 static void set_freq(struct i2c_client *c, unsigned long freq)
 119 {
 120         struct tuner *t = i2c_get_clientdata(c);
 121
 122         switch (t->mode) {
 123         case V4L2_TUNER_RADIO:
 124                 tuner_dbg("radio freq set to %lu.%02lu\n",
 125                           freq / 16000, freq % 16000 * 100 / 16000);
 126                 set_radio_freq(c, freq);
 127                 break;
 128         case V4L2_TUNER_ANALOG_TV:
 129         case V4L2_TUNER_DIGITAL_TV:
 130                 tuner_dbg("tv freq set to %lu.%02lu\n",
 131                           freq / 16, freq % 16 * 100 / 16);
 132                 set_tv_freq(c, freq);
 133                 break;
 134         }
 135         t->freq = freq;
 136 }
 137
 138 static void set_type(struct i2c_client *c, unsigned int type,
 139                      unsigned int new_mode_mask)
 140 {
 141         struct tuner *t = i2c_get_clientdata(c);
 142         unsigned char buffer[4];
 143
 144         if (type == UNSET || type == TUNER_ABSENT) {
 145                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
 146                 return;
 147         }
 148
 149         if (type >= tuner_count) {
 150                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
 151                 return;
 152         }
 153
 154         /* This code detects calls by card attach_inform */
 155         if (NULL == t->i2c.dev.driver) {
 156                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
 157
 158                 t->type=type;
 159                 return;
 160         }
 161
 162         t->type = type;
 163
 164         switch (t->type) {
 165         case TUNER_MT2032:
 166                 microtune_init(c);
 167                 break;
 168         case TUNER_PHILIPS_TDA8290:
 169                 tda8290_init(c);
 170                 break;
 171         case TUNER_TEA5767:
 172                 if (tea5767_tuner_init(c) == EINVAL) {
 173                         t->type = TUNER_ABSENT;
 174                         t->mode_mask = T_UNINITIALIZED;
 175                         return;
 176                 }
 177                 t->mode_mask = T_RADIO;
 178                 break;
 179         case TUNER_PHILIPS_FMD1216ME_MK3:
 180                 buffer[0] = 0x0b;
 181                 buffer[1] = 0xdc;
 182                 buffer[2] = 0x9c;
 183                 buffer[3] = 0x60;
 184                 i2c_master_send(c, buffer, 4);
 185                 mdelay(1);
 186                 buffer[2] = 0x86;
 187                 buffer[3] = 0x54;
 188                 i2c_master_send(c, buffer, 4);
 189                 default_tuner_init(c);
 190                 break;
 191         case TUNER_LG_TDVS_H062F:
 192                 /* Set the Auxiliary Byte. */
 193                 buffer[2] &= ~0x20;
 194                 buffer[2] |= 0x18;
 195                 buffer[3] = 0x20;
 196                 i2c_master_send(c, buffer, 4);
 197                 default_tuner_init(c);
 198                 break;
 199         case TUNER_PHILIPS_TD1316:
 200                 buffer[0] = 0x0b;
 201                 buffer[1] = 0xdc;
 202                 buffer[2] = 0x86;
 203                 buffer[3] = 0xa4;
 204                 i2c_master_send(c,buffer,4);
 205                 default_tuner_init(c);
 206         default:
 207                 default_tuner_init(c);
 208                 break;
 209         }
 210
 211         if (t->mode_mask == T_UNINITIALIZED)
 212                 t->mode_mask = new_mode_mask;
 213
 214         set_freq(c, t->freq);
 215         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 216                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
 217                   t->mode_mask);
 218 }
 219
 220 /*
 221  * This function apply tuner config to tuner specified
 222  * by tun_setup structure. I addr is unset, then admin status
 223  * and tun addr status is more precise then current status,
 224  * it's applied. Otherwise status and type are applied only to
 225  * tuner with exactly the same addr.
 226 */
 227
 228 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 229 {
 230         struct tuner *t = i2c_get_clientdata(c);
 231
 232         if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
 233                 (t->mode_mask & tun_setup->mode_mask)) ||
 234                 tun_setup->addr == c->addr)) {
 235                         set_type(c, tun_setup->type, tun_setup->mode_mask);
 236         }
 237 }
 238
 239 static inline int check_mode(struct tuner *t, char *cmd)
 240 {
 241         if ((1 << t->mode & t->mode_mask) == 0) {
 242                 return EINVAL;
 243         }
 244
 245         switch (t->mode) {
 246         case V4L2_TUNER_RADIO:
 247                 tuner_dbg("Cmd %s accepted for radio\n", cmd);
 248                 break;
 249         case V4L2_TUNER_ANALOG_TV:
 250                 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
 251                 break;
 252         case V4L2_TUNER_DIGITAL_TV:
 253                 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
 254                 break;
 255         }
 256         return 0;
 257 }
 258
 259 /* get more precise norm info from insmod option */
 260 static int tuner_fixup_std(struct tuner *t)
 261 {
 262         if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
 263                 switch (pal[0]) {
 264                 case 'b':
 265                 case 'B':
 266                 case 'g':
 267                 case 'G':
 268                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 269                         t->std = V4L2_STD_PAL_BG;
 270                         break;
 271                 case 'i':
 272                 case 'I':
 273                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 274                         t->std = V4L2_STD_PAL_I;
 275                         break;
 276                 case 'd':
 277                 case 'D':
 278                 case 'k':
 279                 case 'K':
 280                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 281                         t->std = V4L2_STD_PAL_DK;
 282                         break;
 283                 case 'M':
 284                 case 'm':
 285                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 286                         t->std = V4L2_STD_PAL_M;
 287                         break;
 288                 case 'N':
 289                 case 'n':
 290                         if (pal[1] == 'c' || pal[1] == 'C') {
 291                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
 292                                 t->std = V4L2_STD_PAL_Nc;
 293                         } else {
 294                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 295                                 t->std = V4L2_STD_PAL_N;
 296                         }
 297                         break;
 298                 case '-':
 299                         /* default parameter, do nothing */
 300                         break;
 301                 default:
 302                         tuner_warn ("pal= argument not recognised\n");
 303                         break;
 304                 }
 305         }
 306         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 307                 switch (secam[0]) {
 308                 case 'b':
 309                 case 'B':
 310                 case 'g':
 311                 case 'G':
 312                 case 'h':
 313                 case 'H':
 314                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
 315                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
 316                         break;
 317                 case 'd':
 318                 case 'D':
 319                 case 'k':
 320                 case 'K':
 321                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 322                         t->std = V4L2_STD_SECAM_DK;
 323                         break;
 324                 case 'l':
 325                 case 'L':
 326                         if ((secam[1]=='C')||(secam[1]=='c')) {
 327                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
 328                                 t->std = V4L2_STD_SECAM_LC;
 329                         } else {
 330                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 331                                 t->std = V4L2_STD_SECAM_L;
 332                         }
 333                         break;
 334                 case '-':
 335                         /* default parameter, do nothing */
 336                         break;
 337                 default:
 338                         tuner_warn ("secam= argument not recognised\n");
 339                         break;
 340                 }
 341         }
 342
 343         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
 344                 switch (ntsc[0]) {
 345                 case 'm':
 346                 case 'M':
 347                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
 348                         t->std = V4L2_STD_NTSC_M;
 349                         break;
 350                 case 'j':
 351                 case 'J':
 352                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
 353                         t->std = V4L2_STD_NTSC_M_JP;
 354                         break;
 355                 case '-':
 356                         /* default parameter, do nothing */
 357                         break;
 358                 default:
 359                         tuner_info("ntsc= argument not recognised\n");
 360                         break;
 361                 }
 362         }
 363         return 0;
 364 }
 365
 366 static void tuner_status(struct i2c_client *client)
 367 {
 368         struct tuner *t = i2c_get_clientdata(client);
 369         unsigned long freq, freq_fraction;
 370         const char *p;
 371
 372         switch (t->mode) {
 373                 case V4L2_TUNER_RADIO:      p = "radio"; break;
 374                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
 375                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
 376                 default: p = "undefined"; break;
 377         }
 378         if (t->mode == V4L2_TUNER_RADIO) {
 379                 freq = t->freq / 16000;
 380                 freq_fraction = (t->freq % 16000) * 100 / 16000;
 381         } else {
 382                 freq = t->freq / 16;
 383                 freq_fraction = (t->freq % 16) * 100 / 16;
 384         }
 385         tuner_info("Tuner mode:      %s\n", p);
 386         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
 387         tuner_info("Standard:        0x%08llx\n", t->std);
 388         if (t->mode == V4L2_TUNER_RADIO) {
 389                 if (t->has_signal) {
 390                         tuner_info("Signal strength: %d\n", t->has_signal(client));
 391                 }
 392                 if (t->is_stereo) {
 393                         tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
 394                 }
 395         }
 396 }
 397 /* ---------------------------------------------------------------------- */
 398
 399 /* static var Used only in tuner_attach and tuner_probe */
 400 static unsigned default_mode_mask;
 401
 402 /* During client attach, set_type is called by adapter's attach_inform callback.
 403    set_type must then be completed by tuner_attach.
 404  */
 405 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 406 {
 407         struct tuner *t;
 408
 409         client_template.adapter = adap;
 410         client_template.addr = addr;
 411
 412         t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
 413         if (NULL == t)
 414                 return -ENOMEM;
 415         memset(t, 0, sizeof(struct tuner));
 416         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 417         i2c_set_clientdata(&t->i2c, t);
 418         t->type = UNSET;
 419         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 420         t->audmode = V4L2_TUNER_MODE_STEREO;
 421         t->mode_mask = T_UNINITIALIZED;
 422
 423         if (show_i2c) {
 424                 unsigned char buffer[16];
 425                 int i,rc;
 426
 427                 memset(buffer, 0, sizeof(buffer));
 428                 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
 429                 tuner_info("I2C RECV = ");
 430                 for (i=0;i<rc;i++)
 431                         printk("%02x ",buffer[i]);
 432                 printk("\n");
 433         }
 434         /* TEA5767 autodetection code - only for addr = 0xc0 */
 435         if (!no_autodetect) {
 436                 switch (addr) {
 437                 case 0x42:
 438                 case 0x43:
 439                 case 0x4a:
 440                 case 0x4b:
 441                         /* If chip is not tda8290, don't register.
 442                            since it can be tda9887*/
 443                         if (tda8290_probe(&t->i2c) != 0) {
 444                                 tuner_dbg("chip at addr %x is not a tda8290\n", addr);
 445                                 kfree(t);
 446                                 return 0;
 447                         }
 448                         break;
 449                 case 0x60:
 450                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 451                                 t->type = TUNER_TEA5767;
 452                                 t->mode_mask = T_RADIO;
 453                                 t->mode = T_STANDBY;
 454                                 t->freq = 87.5 * 16; /* Sets freq to FM range */
 455                                 default_mode_mask &= ~T_RADIO;
 456
 457                                 goto register_client;
 458                         }
 459                         break;
 460                 }
 461         }
 462
 463         /* Initializes only the first adapter found */
 464         if (default_mode_mask != T_UNINITIALIZED) {
 465                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 466                 t->mode_mask = default_mode_mask;
 467                 t->freq = 400 * 16; /* Sets freq to VHF High */
 468                 default_mode_mask = T_UNINITIALIZED;
 469         }
 470
 471         /* Should be just before return */
 472 register_client:
 473         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 474         i2c_attach_client (&t->i2c);
 475         set_type (&t->i2c,t->type, t->mode_mask);
 476         return 0;
 477 }
 478
 479 static int tuner_probe(struct i2c_adapter *adap)
 480 {
 481         if (0 != addr) {
 482                 normal_i2c[0] = addr;
 483                 normal_i2c[1] = I2C_CLIENT_END;
 484         }
 485
 486         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 487
 488         if (adap->class & I2C_CLASS_TV_ANALOG)
 489                 return i2c_probe(adap, &addr_data, tuner_attach);
 490         return 0;
 491 }
 492
 493 static int tuner_detach(struct i2c_client *client)
 494 {
 495         struct tuner *t = i2c_get_clientdata(client);
 496         int err;
 497
 498         err = i2c_detach_client(&t->i2c);
 499         if (err) {
 500                 tuner_warn
 501                     ("Client deregistration failed, client not detached.\n");
 502                 return err;
 503         }
 504
 505         kfree(t);
 506         return 0;
 507 }
 508
 509 /*
 510  * Switch tuner to other mode. If tuner support both tv and radio,
 511  * set another frequency to some value (This is needed for some pal
 512  * tuners to avoid locking). Otherwise, just put second tuner in
 513  * standby mode.
 514  */
 515
 516 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 517 {
 518         if (mode == t->mode)
 519                 return 0;
 520
 521         t->mode = mode;
 522
 523         if (check_mode(t, cmd) == EINVAL) {
 524                 t->mode = T_STANDBY;
 525                 if (t->standby)
 526                         t->standby (client);
 527                 return EINVAL;
 528         }
 529         return 0;
 530 }
 531
 532 #define switch_v4l2()   if (!t->using_v4l2) \
 533                             tuner_dbg("switching to v4l2\n"); \
 534                         t->using_v4l2 = 1;
 535
 536 static inline int check_v4l2(struct tuner *t)
 537 {
 538         if (t->using_v4l2) {
 539                 tuner_dbg ("ignore v4l1 call\n");
 540                 return EINVAL;
 541         }
 542         return 0;
 543 }
 544
 545 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 546 {
 547         struct tuner *t = i2c_get_clientdata(client);
 548
 549         if (tuner_debug>1)
 550                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
 551
 552         switch (cmd) {
 553         /* --- configuration --- */
 554         case TUNER_SET_TYPE_ADDR:
 555                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
 556                                 ((struct tuner_setup *)arg)->type,
 557                                 ((struct tuner_setup *)arg)->addr,
 558                                 ((struct tuner_setup *)arg)->mode_mask);
 559
 560                 set_addr(client, (struct tuner_setup *)arg);
 561                 break;
 562         case AUDC_SET_RADIO:
 563                 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
 564                 break;
 565         case TUNER_SET_STANDBY:
 566                 {
 567                         if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 568                                 return 0;
 569                         if (t->standby)
 570                                 t->standby (client);
 571                         break;
 572                 }
 573         case VIDIOCSAUDIO:
 574                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 575                         return 0;
 576                 if (check_v4l2(t) == EINVAL)
 577                         return 0;
 578
 579                 /* Should be implemented, since bttv calls it */
 580                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 581
 582                 break;
 583         /* --- v4l ioctls --- */
 584         /* take care: bttv does userspace copying, we'll get a
 585            kernel pointer here... */
 586         case VIDIOCSCHAN:
 587                 {
 588                         static const v4l2_std_id map[] = {
 589                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 590                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 591                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 592                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 593                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 594                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 595                         };
 596                         struct video_channel *vc = arg;
 597
 598                         if (check_v4l2(t) == EINVAL)
 599                                 return 0;
 600
 601                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 602                                 return 0;
 603
 604                         if (vc->norm < ARRAY_SIZE(map))
 605                                 t->std = map[vc->norm];
 606                         tuner_fixup_std(t);
 607                         if (t->freq)
 608                                 set_tv_freq(client, t->freq);
 609                         return 0;
 610                 }
 611         case VIDIOCSFREQ:
 612                 {
 613                         unsigned long *v = arg;
 614
 615                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 616                                 return 0;
 617                         if (check_v4l2(t) == EINVAL)
 618                                 return 0;
 619
 620                         set_freq(client, *v);
 621                         return 0;
 622                 }
 623         case VIDIOCGTUNER:
 624                 {
 625                         struct video_tuner *vt = arg;
 626
 627                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 628                                 return 0;
 629                         if (check_v4l2(t) == EINVAL)
 630                                 return 0;
 631
 632                         if (V4L2_TUNER_RADIO == t->mode) {
 633                                 if (t->has_signal)
 634                                         vt->signal = t->has_signal(client);
 635                                 if (t->is_stereo) {
 636                                         if (t->is_stereo(client))
 637                                                 vt->flags |=
 638                                                     VIDEO_TUNER_STEREO_ON;
 639                                         else
 640                                                 vt->flags &=
 641                                                     ~VIDEO_TUNER_STEREO_ON;
 642                                 }
 643                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 644
 645                                 vt->rangelow = radio_range[0] * 16000;
 646                                 vt->rangehigh = radio_range[1] * 16000;
 647
 648                         } else {
 649                                 vt->rangelow = tv_range[0] * 16;
 650                                 vt->rangehigh = tv_range[1] * 16;
 651                         }
 652
 653                         return 0;
 654                 }
 655         case VIDIOCGAUDIO:
 656                 {
 657                         struct video_audio *va = arg;
 658
 659                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 660                                 return 0;
 661                         if (check_v4l2(t) == EINVAL)
 662                                 return 0;
 663
 664                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 665                                 va->mode = t->is_stereo(client)
 666                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 667                         return 0;
 668                 }
 669
 670         case VIDIOC_S_STD:
 671                 {
 672                         v4l2_std_id *id = arg;
 673
 674                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 675                                         == EINVAL)
 676                                 return 0;
 677
 678                         switch_v4l2();
 679
 680                         t->std = *id;
 681                         tuner_fixup_std(t);
 682                         if (t->freq)
 683                                 set_freq(client, t->freq);
 684                         break;
 685                 }
 686         case VIDIOC_S_FREQUENCY:
 687                 {
 688                         struct v4l2_frequency *f = arg;
 689
 690                         t->freq = f->frequency;
 691                         switch_v4l2();
 692                         if (V4L2_TUNER_RADIO == f->type &&
 693                             V4L2_TUNER_RADIO != t->mode) {
 694                                 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 695                                             == EINVAL)
 696                                         return 0;
 697                         }
 698                         set_freq(client,t->freq);
 699
 700                         break;
 701                 }
 702         case VIDIOC_G_FREQUENCY:
 703                 {
 704                         struct v4l2_frequency *f = arg;
 705
 706                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 707                                 return 0;
 708                         switch_v4l2();
 709                         f->type = t->mode;
 710                         f->frequency = t->freq;
 711                         break;
 712                 }
 713         case VIDIOC_G_TUNER:
 714                 {
 715                         struct v4l2_tuner *tuner = arg;
 716
 717                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 718                                 return 0;
 719                         switch_v4l2();
 720
 721                         if (V4L2_TUNER_RADIO == t->mode) {
 722
 723                                 if (t->has_signal)
 724                                         tuner->signal = t->has_signal(client);
 725
 726                                 if (t->is_stereo) {
 727                                         if (t->is_stereo(client)) {
 728                                                 tuner->rxsubchans =
 729                                                     V4L2_TUNER_SUB_STEREO |
 730                                                     V4L2_TUNER_SUB_MONO;
 731                                         } else {
 732                                                 tuner->rxsubchans =
 733                                                     V4L2_TUNER_SUB_MONO;
 734                                         }
 735                                 }
 736
 737                                 tuner->capability |=
 738                                     V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 739
 740                                 tuner->audmode = t->audmode;
 741
 742                                 tuner->rangelow = radio_range[0] * 16000;
 743                                 tuner->rangehigh = radio_range[1] * 16000;
 744                         } else {
 745                                 tuner->rangelow = tv_range[0] * 16;
 746                                 tuner->rangehigh = tv_range[1] * 16;
 747                         }
 748                         break;
 749                 }
 750         case VIDIOC_S_TUNER:
 751                 {
 752                         struct v4l2_tuner *tuner = arg;
 753
 754                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 755                                 return 0;
 756
 757                         switch_v4l2();
 758
 759                         if (V4L2_TUNER_RADIO == t->mode) {
 760                                 t->audmode = tuner->audmode;
 761                                 set_radio_freq(client, t->freq);
 762                         }
 763                         break;
 764                 }
 765         case VIDIOC_LOG_STATUS:
 766                 tuner_status(client);
 767                 break;
 768         }
 769
 770         return 0;
 771 }
 772
 773 static int tuner_suspend(struct device *dev, pm_message_t state)
 774 {
 775         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 776         struct tuner *t = i2c_get_clientdata (c);
 777
 778         tuner_dbg ("suspend\n");
 779         /* FIXME: power down ??? */
 780         return 0;
 781 }
 782
 783 static int tuner_resume(struct device *dev)
 784 {
 785         struct i2c_client *c = container_of (dev, struct i2c_client, dev);
 786         struct tuner *t = i2c_get_clientdata (c);
 787
 788         tuner_dbg ("resume\n");
 789         if (t->freq)
 790                 set_freq(c, t->freq);
 791         return 0;
 792 }
 793
 794 /* ----------------------------------------------------------------------- */
 795
 796 static struct i2c_driver driver = {
 797         .id = I2C_DRIVERID_TUNER,
 798         .attach_adapter = tuner_probe,
 799         .detach_client = tuner_detach,
 800         .command = tuner_command,
 801         .driver = {
 802                    .name = "tuner",
 803                    .suspend = tuner_suspend,
 804                    .resume = tuner_resume,
 805                    },
 806 };
 807 static struct i2c_client client_template = {
 808         .name = "(tuner unset)",
 809         .driver = &driver,
 810 };
 811
 812 static int __init tuner_init_module(void)
 813 {
 814         return i2c_add_driver(&driver);
 815 }
 816
 817 static void __exit tuner_cleanup_module(void)
 818 {
 819         i2c_del_driver(&driver);
 820 }
 821
 822 module_init(tuner_init_module);
 823 module_exit(tuner_cleanup_module);
 824
 825 /*
 826  * Overrides for Emacs so that we follow Linus's tabbing style.
 827  * ---------------------------------------------------------------------------
 828  * Local variables:
 829  * c-basic-offset: 8
 830  * End:
 831  */