SAFE public projects git trees. - safe/jmp/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/string.h>
  11 #include <linux/timer.h>
  12 #include <linux/delay.h>
  13 #include <linux/errno.h>
  14 #include <linux/slab.h>
  15 #include <linux/poll.h>
  16 #include <linux/i2c.h>
  17 #include <linux/types.h>
  18 #include <linux/videodev.h>
  19 #include <linux/init.h>
  20
  21 #include <media/tuner.h>
  22 #include <media/v4l2-common.h>
  23
  24 #define UNSET (-1U)
  25
  26 /* standard i2c insmod options */
  27 static unsigned short normal_i2c[] = {
  28         0x42, 0x43, 0x4a, 0x4b,                 /* tda8290 */
  29         0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
  30         0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
  31         I2C_CLIENT_END
  32 };
  33
  34 I2C_CLIENT_INSMOD;
  35
  36 /* insmod options used at init time => read/only */
  37 static unsigned int addr = 0;
  38 static unsigned int no_autodetect = 0;
  39 static unsigned int show_i2c = 0;
  40
  41 /* insmod options used at runtime => read/write */
  42 int tuner_debug = 0;
  43
  44 static unsigned int tv_range[2] = { 44, 958 };
  45 static unsigned int radio_range[2] = { 65, 108 };
  46
  47 static char pal[] = "--";
  48 static char secam[] = "--";
  49 static char ntsc[] = "-";
  50
  51
  52 module_param(addr, int, 0444);
  53 module_param(no_autodetect, int, 0444);
  54 module_param(show_i2c, int, 0444);
  55 module_param_named(debug,tuner_debug, int, 0644);
  56 module_param_string(pal, pal, sizeof(pal), 0644);
  57 module_param_string(secam, secam, sizeof(secam), 0644);
  58 module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
  59 module_param_array(tv_range, int, NULL, 0644);
  60 module_param_array(radio_range, int, NULL, 0644);
  61
  62 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
  63 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
  64 MODULE_LICENSE("GPL");
  65
  66 static struct i2c_driver driver;
  67 static struct i2c_client client_template;
  68
  69 /* ---------------------------------------------------------------------- */
  70
  71 /* Set tuner frequency,  freq in Units of 62.5kHz = 1/16MHz */
  72 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
  73 {
  74         struct tuner *t = i2c_get_clientdata(c);
  75
  76         if (t->type == UNSET) {
  77                 tuner_warn ("tuner type not set\n");
  78                 return;
  79         }
  80         if (NULL == t->set_tv_freq) {
  81                 tuner_warn ("Tuner has no way to set tv freq\n");
  82                 return;
  83         }
  84         if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
  85                 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
  86                            freq / 16, freq % 16 * 100 / 16, tv_range[0],
  87                            tv_range[1]);
  88                 /* V4L2 spec: if the freq is not possible then the closest
  89                    possible value should be selected */
  90                 if (freq < tv_range[0] * 16)
  91                         freq = tv_range[0] * 16;
  92                 else
  93                         freq = tv_range[1] * 16;
  94         }
  95         t->set_tv_freq(c, freq);
  96 }
  97
  98 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
  99 {
 100         struct tuner *t = i2c_get_clientdata(c);
 101
 102         if (t->type == UNSET) {
 103                 tuner_warn ("tuner type not set\n");
 104                 return;
 105         }
 106         if (NULL == t->set_radio_freq) {
 107                 tuner_warn ("tuner has no way to set radio frequency\n");
 108                 return;
 109         }
 110         if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) {
 111                 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
 112                            freq / 16000, freq % 16000 * 100 / 16000,
 113                            radio_range[0], radio_range[1]);
 114                 /* V4L2 spec: if the freq is not possible then the closest
 115                    possible value should be selected */
 116                 if (freq < radio_range[0] * 16000)
 117                         freq = radio_range[0] * 16000;
 118                 else
 119                         freq = radio_range[1] * 16000;
 120         }
 121
 122         t->set_radio_freq(c, freq);
 123 }
 124
 125 static void set_freq(struct i2c_client *c, unsigned long freq)
 126 {
 127         struct tuner *t = i2c_get_clientdata(c);
 128
 129         switch (t->mode) {
 130         case V4L2_TUNER_RADIO:
 131                 tuner_dbg("radio freq set to %lu.%02lu\n",
 132                           freq / 16000, freq % 16000 * 100 / 16000);
 133                 set_radio_freq(c, freq);
 134                 t->radio_freq = freq;
 135                 break;
 136         case V4L2_TUNER_ANALOG_TV:
 137         case V4L2_TUNER_DIGITAL_TV:
 138                 tuner_dbg("tv freq set to %lu.%02lu\n",
 139                           freq / 16, freq % 16 * 100 / 16);
 140                 set_tv_freq(c, freq);
 141                 t->tv_freq = freq;
 142                 break;
 143         }
 144 }
 145
 146 static void set_type(struct i2c_client *c, unsigned int type,
 147                      unsigned int new_mode_mask, unsigned int new_config,
 148                      tuner_gpio_func_t gpio_func)
 149 {
 150         struct tuner *t = i2c_get_clientdata(c);
 151         unsigned char buffer[4];
 152
 153         if (type == UNSET || type == TUNER_ABSENT) {
 154                 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
 155                 return;
 156         }
 157
 158         if (type >= tuner_count) {
 159                 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
 160                 return;
 161         }
 162
 163         /* This code detects calls by card attach_inform */
 164         if (NULL == t->i2c.dev.driver) {
 165                 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
 166
 167                 t->type=type;
 168                 return;
 169         }
 170
 171         t->type = type;
 172         switch (t->type) {
 173         case TUNER_MT2032:
 174                 microtune_init(c);
 175                 break;
 176         case TUNER_PHILIPS_TDA8290:
 177                 t->config = new_config;
 178                 if (gpio_func != NULL) {
 179                         tuner_dbg("Defining GPIO function\n");
 180                         t->gpio_func = gpio_func;
 181                 }
 182                 tda8290_init(c);
 183                 break;
 184         case TUNER_TEA5767:
 185                 if (tea5767_tuner_init(c) == EINVAL) {
 186                         t->type = TUNER_ABSENT;
 187                         t->mode_mask = T_UNINITIALIZED;
 188                         return;
 189                 }
 190                 t->mode_mask = T_RADIO;
 191                 break;
 192         case TUNER_PHILIPS_FMD1216ME_MK3:
 193                 buffer[0] = 0x0b;
 194                 buffer[1] = 0xdc;
 195                 buffer[2] = 0x9c;
 196                 buffer[3] = 0x60;
 197                 i2c_master_send(c, buffer, 4);
 198                 mdelay(1);
 199                 buffer[2] = 0x86;
 200                 buffer[3] = 0x54;
 201                 i2c_master_send(c, buffer, 4);
 202                 default_tuner_init(c);
 203                 break;
 204         case TUNER_PHILIPS_TD1316:
 205                 buffer[0] = 0x0b;
 206                 buffer[1] = 0xdc;
 207                 buffer[2] = 0x86;
 208                 buffer[3] = 0xa4;
 209                 i2c_master_send(c,buffer,4);
 210                 default_tuner_init(c);
 211                 break;
 212         case TUNER_TDA9887:
 213                 tda9887_tuner_init(c);
 214                 break;
 215         default:
 216                 default_tuner_init(c);
 217                 break;
 218         }
 219
 220         if (t->mode_mask == T_UNINITIALIZED)
 221                 t->mode_mask = new_mode_mask;
 222
 223         set_freq(c, (V4L2_TUNER_RADIO == t->mode) ? t->radio_freq : t->tv_freq);
 224         tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
 225                   c->adapter->name, c->driver->driver.name, c->addr << 1, type,
 226                   t->mode_mask);
 227 }
 228
 229 /*
 230  * This function apply tuner config to tuner specified
 231  * by tun_setup structure. I addr is unset, then admin status
 232  * and tun addr status is more precise then current status,
 233  * it's applied. Otherwise status and type are applied only to
 234  * tuner with exactly the same addr.
 235 */
 236
 237 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 238 {
 239         struct tuner *t = i2c_get_clientdata(c);
 240
 241         tuner_dbg("set addr for type %i\n", t->type);
 242
 243         if ( (t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) &&
 244                 (t->mode_mask & tun_setup->mode_mask))) ||
 245                 (tun_setup->addr == c->addr)) {
 246                         set_type(c, tun_setup->type, tun_setup->mode_mask,
 247                                  tun_setup->config, tun_setup->gpio_func);
 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 '6':
 277                         tuner_dbg ("insmod fixup: PAL => PAL-60\n");
 278                         t->std = V4L2_STD_PAL_60;
 279                         break;
 280                 case 'b':
 281                 case 'B':
 282                 case 'g':
 283                 case 'G':
 284                         tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
 285                         t->std = V4L2_STD_PAL_BG;
 286                         break;
 287                 case 'i':
 288                 case 'I':
 289                         tuner_dbg ("insmod fixup: PAL => PAL-I\n");
 290                         t->std = V4L2_STD_PAL_I;
 291                         break;
 292                 case 'd':
 293                 case 'D':
 294                 case 'k':
 295                 case 'K':
 296                         tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
 297                         t->std = V4L2_STD_PAL_DK;
 298                         break;
 299                 case 'M':
 300                 case 'm':
 301                         tuner_dbg ("insmod fixup: PAL => PAL-M\n");
 302                         t->std = V4L2_STD_PAL_M;
 303                         break;
 304                 case 'N':
 305                 case 'n':
 306                         if (pal[1] == 'c' || pal[1] == 'C') {
 307                                 tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
 308                                 t->std = V4L2_STD_PAL_Nc;
 309                         } else {
 310                                 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
 311                                 t->std = V4L2_STD_PAL_N;
 312                         }
 313                         break;
 314                 case '-':
 315                         /* default parameter, do nothing */
 316                         break;
 317                 default:
 318                         tuner_warn ("pal= argument not recognised\n");
 319                         break;
 320                 }
 321         }
 322         if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
 323                 switch (secam[0]) {
 324                 case 'b':
 325                 case 'B':
 326                 case 'g':
 327                 case 'G':
 328                 case 'h':
 329                 case 'H':
 330                         tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
 331                         t->std = V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
 332                         break;
 333                 case 'd':
 334                 case 'D':
 335                 case 'k':
 336                 case 'K':
 337                         tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
 338                         t->std = V4L2_STD_SECAM_DK;
 339                         break;
 340                 case 'l':
 341                 case 'L':
 342                         if ((secam[1]=='C')||(secam[1]=='c')) {
 343                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L'\n");
 344                                 t->std = V4L2_STD_SECAM_LC;
 345                         } else {
 346                                 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
 347                                 t->std = V4L2_STD_SECAM_L;
 348                         }
 349                         break;
 350                 case '-':
 351                         /* default parameter, do nothing */
 352                         break;
 353                 default:
 354                         tuner_warn ("secam= argument not recognised\n");
 355                         break;
 356                 }
 357         }
 358
 359         if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
 360                 switch (ntsc[0]) {
 361                 case 'm':
 362                 case 'M':
 363                         tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
 364                         t->std = V4L2_STD_NTSC_M;
 365                         break;
 366                 case 'j':
 367                 case 'J':
 368                         tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
 369                         t->std = V4L2_STD_NTSC_M_JP;
 370                         break;
 371                 case 'k':
 372                 case 'K':
 373                         tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
 374                         t->std = V4L2_STD_NTSC_M_KR;
 375                         break;
 376                 case '-':
 377                         /* default parameter, do nothing */
 378                         break;
 379                 default:
 380                         tuner_info("ntsc= argument not recognised\n");
 381                         break;
 382                 }
 383         }
 384         return 0;
 385 }
 386
 387 static void tuner_status(struct i2c_client *client)
 388 {
 389         struct tuner *t = i2c_get_clientdata(client);
 390         unsigned long freq, freq_fraction;
 391         const char *p;
 392
 393         switch (t->mode) {
 394                 case V4L2_TUNER_RADIO:      p = "radio"; break;
 395                 case V4L2_TUNER_ANALOG_TV:  p = "analog TV"; break;
 396                 case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break;
 397                 default: p = "undefined"; break;
 398         }
 399         if (t->mode == V4L2_TUNER_RADIO) {
 400                 freq = t->radio_freq / 16000;
 401                 freq_fraction = (t->radio_freq % 16000) * 100 / 16000;
 402         } else {
 403                 freq = t->tv_freq / 16;
 404                 freq_fraction = (t->tv_freq % 16) * 100 / 16;
 405         }
 406         tuner_info("Tuner mode:      %s\n", p);
 407         tuner_info("Frequency:       %lu.%02lu MHz\n", freq, freq_fraction);
 408         tuner_info("Standard:        0x%08lx\n", (unsigned long)t->std);
 409         if (t->mode != V4L2_TUNER_RADIO)
 410                return;
 411         if (t->has_signal) {
 412                 tuner_info("Signal strength: %d\n", t->has_signal(client));
 413         }
 414         if (t->is_stereo) {
 415                 tuner_info("Stereo:          %s\n", t->is_stereo(client) ? "yes" : "no");
 416         }
 417 }
 418
 419 /* ---------------------------------------------------------------------- */
 420
 421 /* static vars: used only in tuner_attach and tuner_probe */
 422 static unsigned default_mode_mask;
 423
 424 /* During client attach, set_type is called by adapter's attach_inform callback.
 425    set_type must then be completed by tuner_attach.
 426  */
 427 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 428 {
 429         struct tuner *t;
 430
 431         client_template.adapter = adap;
 432         client_template.addr = addr;
 433
 434         t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
 435         if (NULL == t)
 436                 return -ENOMEM;
 437         memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
 438         i2c_set_clientdata(&t->i2c, t);
 439         t->type = UNSET;
 440         t->radio_if2 = 10700 * 1000;    /* 10.7MHz - FM radio */
 441         t->audmode = V4L2_TUNER_MODE_STEREO;
 442         t->mode_mask = T_UNINITIALIZED;
 443         t->tuner_status = tuner_status;
 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         /* HACK: This test were added to avoid tuner to probe tda9840 and tea6415c on the MXB card */
 457         if (adap->id == I2C_HW_SAA7146 && addr < 0x4a)
 458                 return -ENODEV;
 459
 460         /* autodetection code based on the i2c addr */
 461         if (!no_autodetect) {
 462                 switch (addr) {
 463                 case 0x42:
 464                 case 0x43:
 465                 case 0x4a:
 466                 case 0x4b:
 467                         /* If chip is not tda8290, don't register.
 468                            since it can be tda9887*/
 469                         if (tda8290_probe(&t->i2c) == 0) {
 470                                 tuner_dbg("chip at addr %x is a tda8290\n", addr);
 471                         } else {
 472                                 /* Default is being tda9887 */
 473                                 t->type = TUNER_TDA9887;
 474                                 t->mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 475                                 t->mode = T_STANDBY;
 476                                 goto register_client;
 477                         }
 478                         break;
 479                 case 0x60:
 480                         if (tea5767_autodetection(&t->i2c) != EINVAL) {
 481                                 t->type = TUNER_TEA5767;
 482                                 t->mode_mask = T_RADIO;
 483                                 t->mode = T_STANDBY;
 484                                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 485                                 default_mode_mask &= ~T_RADIO;
 486
 487                                 goto register_client;
 488                         }
 489                         break;
 490                 }
 491         }
 492
 493         /* Initializes only the first adapter found */
 494         if (default_mode_mask != T_UNINITIALIZED) {
 495                 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
 496                 t->mode_mask = default_mode_mask;
 497                 t->tv_freq = 400 * 16; /* Sets freq to VHF High */
 498                 t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */
 499                 default_mode_mask = T_UNINITIALIZED;
 500         }
 501
 502         /* Should be just before return */
 503 register_client:
 504         tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 505         i2c_attach_client (&t->i2c);
 506         set_type (&t->i2c,t->type, t->mode_mask, t->config, t->gpio_func);
 507         return 0;
 508 }
 509
 510 static int tuner_probe(struct i2c_adapter *adap)
 511 {
 512         if (0 != addr) {
 513                 normal_i2c[0] = addr;
 514                 normal_i2c[1] = I2C_CLIENT_END;
 515         }
 516
 517         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 518
 519         if (adap->class & I2C_CLASS_TV_ANALOG)
 520                 return i2c_probe(adap, &addr_data, tuner_attach);
 521         return 0;
 522 }
 523
 524 static int tuner_detach(struct i2c_client *client)
 525 {
 526         struct tuner *t = i2c_get_clientdata(client);
 527         int err;
 528
 529         err = i2c_detach_client(&t->i2c);
 530         if (err) {
 531                 tuner_warn
 532                     ("Client deregistration failed, client not detached.\n");
 533                 return err;
 534         }
 535
 536         kfree(t);
 537         return 0;
 538 }
 539
 540 /*
 541  * Switch tuner to other mode. If tuner support both tv and radio,
 542  * set another frequency to some value (This is needed for some pal
 543  * tuners to avoid locking). Otherwise, just put second tuner in
 544  * standby mode.
 545  */
 546
 547 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
 548 {
 549         if (mode == t->mode)
 550                 return 0;
 551
 552         t->mode = mode;
 553
 554         if (check_mode(t, cmd) == EINVAL) {
 555                 t->mode = T_STANDBY;
 556                 if (t->standby)
 557                         t->standby (client);
 558                 return EINVAL;
 559         }
 560         return 0;
 561 }
 562
 563 #define switch_v4l2()   if (!t->using_v4l2) \
 564                             tuner_dbg("switching to v4l2\n"); \
 565                         t->using_v4l2 = 1;
 566
 567 static inline int check_v4l2(struct tuner *t)
 568 {
 569         /* bttv still uses both v4l1 and v4l2 calls to the tuner (v4l2 for
 570            TV, v4l1 for radio), until that is fixed this code is disabled.
 571            Otherwise the radio (v4l1) wouldn't tune after using the TV (v4l2)
 572            first. */
 573         return 0;
 574 }
 575
 576 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 577 {
 578         struct tuner *t = i2c_get_clientdata(client);
 579
 580         if (tuner_debug>1)
 581                 v4l_i2c_print_ioctl(&(t->i2c),cmd);
 582
 583         switch (cmd) {
 584         /* --- configuration --- */
 585         case TUNER_SET_TYPE_ADDR:
 586                 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n",
 587                                 ((struct tuner_setup *)arg)->type,
 588                                 ((struct tuner_setup *)arg)->addr,
 589                                 ((struct tuner_setup *)arg)->mode_mask,
 590                                 ((struct tuner_setup *)arg)->config);
 591
 592                 set_addr(client, (struct tuner_setup *)arg);
 593                 break;
 594         case AUDC_SET_RADIO:
 595                 if (set_mode(client, t, V4L2_TUNER_RADIO, "AUDC_SET_RADIO")
 596                                 == EINVAL)
 597                         return 0;
 598                 if (t->radio_freq)
 599                         set_freq(client, t->radio_freq);
 600                 break;
 601         case TUNER_SET_STANDBY:
 602                 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
 603                         return 0;
 604                 t->mode = T_STANDBY;
 605                 if (t->standby)
 606                         t->standby (client);
 607                 break;
 608 #ifdef CONFIG_VIDEO_V4L1
 609         case VIDIOCSAUDIO:
 610                 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
 611                         return 0;
 612                 if (check_v4l2(t) == EINVAL)
 613                         return 0;
 614
 615                 /* Should be implemented, since bttv calls it */
 616                 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
 617                 break;
 618         case VIDIOCSCHAN:
 619                 {
 620                         static const v4l2_std_id map[] = {
 621                                 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
 622                                 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
 623                                 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
 624                                 [4 /* bttv */ ] = V4L2_STD_PAL_M,
 625                                 [5 /* bttv */ ] = V4L2_STD_PAL_N,
 626                                 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
 627                         };
 628                         struct video_channel *vc = arg;
 629
 630                         if (check_v4l2(t) == EINVAL)
 631                                 return 0;
 632
 633                         if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
 634                                 return 0;
 635
 636                         if (vc->norm < ARRAY_SIZE(map))
 637                                 t->std = map[vc->norm];
 638                         tuner_fixup_std(t);
 639                         if (t->tv_freq)
 640                                 set_tv_freq(client, t->tv_freq);
 641                         return 0;
 642                 }
 643         case VIDIOCSFREQ:
 644                 {
 645                         unsigned long *v = arg;
 646
 647                         if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
 648                                 return 0;
 649                         if (check_v4l2(t) == EINVAL)
 650                                 return 0;
 651
 652                         set_freq(client, *v);
 653                         return 0;
 654                 }
 655         case VIDIOCGTUNER:
 656                 {
 657                         struct video_tuner *vt = arg;
 658
 659                         if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
 660                                 return 0;
 661                         if (check_v4l2(t) == EINVAL)
 662                                 return 0;
 663
 664                         if (V4L2_TUNER_RADIO == t->mode) {
 665                                 if (t->has_signal)
 666                                         vt->signal = t->has_signal(client);
 667                                 if (t->is_stereo) {
 668                                         if (t->is_stereo(client))
 669                                                 vt->flags |=
 670                                                     VIDEO_TUNER_STEREO_ON;
 671                                         else
 672                                                 vt->flags &=
 673                                                     ~VIDEO_TUNER_STEREO_ON;
 674                                 }
 675                                 vt->flags |= VIDEO_TUNER_LOW;   /* Allow freqs at 62.5 Hz */
 676
 677                                 vt->rangelow = radio_range[0] * 16000;
 678                                 vt->rangehigh = radio_range[1] * 16000;
 679
 680                         } else {
 681                                 vt->rangelow = tv_range[0] * 16;
 682                                 vt->rangehigh = tv_range[1] * 16;
 683                         }
 684
 685                         return 0;
 686                 }
 687         case VIDIOCGAUDIO:
 688                 {
 689                         struct video_audio *va = arg;
 690
 691                         if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
 692                                 return 0;
 693                         if (check_v4l2(t) == EINVAL)
 694                                 return 0;
 695
 696                         if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
 697                                 va->mode = t->is_stereo(client)
 698                                     ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
 699                         return 0;
 700                 }
 701 #endif
 702         case TDA9887_SET_CONFIG:
 703                 if (t->type == TUNER_TDA9887) {
 704                         int *i = arg;
 705
 706                         t->tda9887_config = *i;
 707                         set_freq(client, t->tv_freq);
 708                 }
 709                 break;
 710         /* --- v4l ioctls --- */
 711         /* take care: bttv does userspace copying, we'll get a
 712            kernel pointer here... */
 713         case VIDIOC_S_STD:
 714                 {
 715                         v4l2_std_id *id = arg;
 716
 717                         if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
 718                                         == EINVAL)
 719                                 return 0;
 720
 721                         switch_v4l2();
 722
 723                         t->std = *id;
 724                         tuner_fixup_std(t);
 725                         if (t->tv_freq)
 726                                 set_freq(client, t->tv_freq);
 727                         break;
 728                 }
 729         case VIDIOC_S_FREQUENCY:
 730                 {
 731                         struct v4l2_frequency *f = arg;
 732
 733                         if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
 734                                         == EINVAL)
 735                                 return 0;
 736                         switch_v4l2();
 737                         set_freq(client,f->frequency);
 738
 739                         break;
 740                 }
 741         case VIDIOC_G_FREQUENCY:
 742                 {
 743                         struct v4l2_frequency *f = arg;
 744
 745                         if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
 746                                 return 0;
 747                         switch_v4l2();
 748                         f->type = t->mode;
 749                         f->frequency = (V4L2_TUNER_RADIO == t->mode) ?
 750                                 t->radio_freq : t->tv_freq;
 751                         break;
 752                 }
 753         case VIDIOC_G_TUNER:
 754                 {
 755                         struct v4l2_tuner *tuner = arg;
 756
 757                         if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
 758                                 return 0;
 759                         switch_v4l2();
 760
 761                         tuner->type = t->mode;
 762                         if (t->get_afc)
 763                                 tuner->afc=t->get_afc(client);
 764                         if (t->mode == V4L2_TUNER_ANALOG_TV)
 765                                 tuner->capability |= V4L2_TUNER_CAP_NORM;
 766                         if (t->mode != V4L2_TUNER_RADIO) {
 767                                 tuner->rangelow = tv_range[0] * 16;
 768                                 tuner->rangehigh = tv_range[1] * 16;
 769                                 break;
 770                         }
 771
 772                         /* radio mode */
 773                         if (t->has_signal)
 774                                 tuner->signal = t->has_signal(client);
 775
 776                         tuner->rxsubchans =
 777                                 V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 778                         if (t->is_stereo) {
 779                                 tuner->rxsubchans = t->is_stereo(client) ?
 780                                         V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
 781                         }
 782
 783                         tuner->capability |=
 784                             V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
 785                         tuner->audmode = t->audmode;
 786                         tuner->rangelow = radio_range[0] * 16000;
 787                         tuner->rangehigh = radio_range[1] * 16000;
 788                         break;
 789                 }
 790         case VIDIOC_S_TUNER:
 791                 {
 792                         struct v4l2_tuner *tuner = arg;
 793
 794                         if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
 795                                 return 0;
 796
 797                         switch_v4l2();
 798
 799                         /* do nothing unless we're a radio tuner */
 800                         if (t->mode != V4L2_TUNER_RADIO)
 801                                 break;
 802                         t->audmode = tuner->audmode;
 803                         set_radio_freq(client, t->radio_freq);
 804                         break;
 805                 }
 806         case VIDIOC_LOG_STATUS:
 807                 if (t->tuner_status)
 808                         t->tuner_status(client);
 809                 break;
 810         }
 811
 812         return 0;
 813 }
 814
 815 static int tuner_suspend(struct i2c_client *c, pm_message_t state)
 816 {
 817         struct tuner *t = i2c_get_clientdata (c);
 818
 819         tuner_dbg ("suspend\n");
 820         /* FIXME: power down ??? */
 821         return 0;
 822 }
 823
 824 static int tuner_resume(struct i2c_client *c)
 825 {
 826         struct tuner *t = i2c_get_clientdata (c);
 827
 828         tuner_dbg ("resume\n");
 829         if (V4L2_TUNER_RADIO == t->mode) {
 830                 if (t->radio_freq)
 831                         set_freq(c, t->radio_freq);
 832         } else {
 833                 if (t->tv_freq)
 834                         set_freq(c, t->tv_freq);
 835         }
 836         return 0;
 837 }
 838
 839 /* ----------------------------------------------------------------------- */
 840
 841 static struct i2c_driver driver = {
 842         .id = I2C_DRIVERID_TUNER,
 843         .attach_adapter = tuner_probe,
 844         .detach_client = tuner_detach,
 845         .command = tuner_command,
 846         .suspend = tuner_suspend,
 847         .resume  = tuner_resume,
 848         .driver = {
 849                 .name    = "tuner",
 850         },
 851 };
 852 static struct i2c_client client_template = {
 853         .name = "(tuner unset)",
 854         .driver = &driver,
 855 };
 856
 857 static int __init tuner_init_module(void)
 858 {
 859         return i2c_add_driver(&driver);
 860 }
 861
 862 static void __exit tuner_cleanup_module(void)
 863 {
 864         i2c_del_driver(&driver);
 865 }
 866
 867 module_init(tuner_init_module);
 868 module_exit(tuner_cleanup_module);
 869
 870 /*
 871  * Overrides for Emacs so that we follow Linus's tabbing style.
 872  * ---------------------------------------------------------------------------
 873  * Local variables:
 874  * c-basic-offset: 8
 875  * End:
 876  */