drivers/media/pci/saa7134/saa7134-tvaudio.c

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * tv audio decoder (fm stereo, nicam, ...)
   5  *
   6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  */
  18
  19 #include "saa7134.h"
  20 #include "saa7134-reg.h"
  21
  22 #include <linux/init.h>
  23 #include <linux/list.h>
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/kthread.h>
  27 #include <linux/delay.h>
  28 #include <linux/freezer.h>
  29 #include <asm/div64.h>
  30
  31 /* ------------------------------------------------------------------ */
  32
  33 static unsigned int audio_debug;
  34 module_param(audio_debug, int, 0644);
  35 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  36
  37 static unsigned int audio_ddep;
  38 module_param(audio_ddep, int, 0644);
  39 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  40
  41 static int audio_clock_override = UNSET;
  42 module_param(audio_clock_override, int, 0644);
  43
  44 static int audio_clock_tweak;
  45 module_param(audio_clock_tweak, int, 0644);
  46 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  47
  48 #define audio_dbg(level, fmt, arg...) do { \
  49         if (audio_debug >= level) \
  50                 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
  51         } while (0)
  52
  53 /* msecs */
  54 #define SCAN_INITIAL_DELAY     1000
  55 #define SCAN_SAMPLE_DELAY       200
  56 #define SCAN_SUBCARRIER_DELAY  2000
  57
  58 /* ------------------------------------------------------------------ */
  59 /* saa7134 code                                                       */
  60
  61 static struct mainscan {
  62         char         *name;
  63         v4l2_std_id  std;
  64         int          carr;
  65 } mainscan[] = {
  66         {
  67                 .name = "MN",
  68                 .std  = V4L2_STD_MN,
  69                 .carr = 4500,
  70         },{
  71                 .name = "BGH",
  72                 .std  = V4L2_STD_B | V4L2_STD_GH,
  73                 .carr = 5500,
  74         },{
  75                 .name = "I",
  76                 .std  = V4L2_STD_PAL_I,
  77                 .carr = 6000,
  78         },{
  79                 .name = "DKL",
  80                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  81                 .carr = 6500,
  82         }
  83 };
  84
  85 static struct saa7134_tvaudio tvaudio[] = {
  86         {
  87                 .name          = "PAL-B/G FM-stereo",
  88                 .std           = V4L2_STD_PAL_BG,
  89                 .mode          = TVAUDIO_FM_BG_STEREO,
  90                 .carr1         = 5500,
  91                 .carr2         = 5742,
  92         },{
  93                 .name          = "PAL-D/K1 FM-stereo",
  94                 .std           = V4L2_STD_PAL_DK,
  95                 .carr1         = 6500,
  96                 .carr2         = 6258,
  97                 .mode          = TVAUDIO_FM_BG_STEREO,
  98         },{
  99                 .name          = "PAL-D/K2 FM-stereo",
 100                 .std           = V4L2_STD_PAL_DK,
 101                 .carr1         = 6500,
 102                 .carr2         = 6742,
 103                 .mode          = TVAUDIO_FM_BG_STEREO,
 104         },{
 105                 .name          = "PAL-D/K3 FM-stereo",
 106                 .std           = V4L2_STD_PAL_DK,
 107                 .carr1         = 6500,
 108                 .carr2         = 5742,
 109                 .mode          = TVAUDIO_FM_BG_STEREO,
 110         },{
 111                 .name          = "PAL-B/G NICAM",
 112                 .std           = V4L2_STD_PAL_BG,
 113                 .carr1         = 5500,
 114                 .carr2         = 5850,
 115                 .mode          = TVAUDIO_NICAM_FM,
 116         },{
 117                 .name          = "PAL-I NICAM",
 118                 .std           = V4L2_STD_PAL_I,
 119                 .carr1         = 6000,
 120                 .carr2         = 6552,
 121                 .mode          = TVAUDIO_NICAM_FM,
 122         },{
 123                 .name          = "PAL-D/K NICAM",
 124                 .std           = V4L2_STD_PAL_DK,
 125                 .carr1         = 6500,
 126                 .carr2         = 5850,
 127                 .mode          = TVAUDIO_NICAM_FM,
 128         },{
 129                 .name          = "SECAM-L NICAM",
 130                 .std           = V4L2_STD_SECAM_L,
 131                 .carr1         = 6500,
 132                 .carr2         = 5850,
 133                 .mode          = TVAUDIO_NICAM_AM,
 134         },{
 135                 .name          = "SECAM-D/K NICAM",
 136                 .std           = V4L2_STD_SECAM_DK,
 137                 .carr1         = 6500,
 138                 .carr2         = 5850,
 139                 .mode          = TVAUDIO_NICAM_FM,
 140         },{
 141                 .name          = "NTSC-A2 FM-stereo",
 142                 .std           = V4L2_STD_NTSC,
 143                 .carr1         = 4500,
 144                 .carr2         = 4724,
 145                 .mode          = TVAUDIO_FM_K_STEREO,
 146         },{
 147                 .name          = "NTSC-M",
 148                 .std           = V4L2_STD_NTSC,
 149                 .carr1         = 4500,
 150                 .carr2         = -1,
 151                 .mode          = TVAUDIO_FM_MONO,
 152         }
 153 };
 154 #define TVAUDIO ARRAY_SIZE(tvaudio)
 155
 156 /* ------------------------------------------------------------------ */
 157
 158 static u32 tvaudio_carr2reg(u32 carrier)
 159 {
 160         u64 a = carrier;
 161
 162         a <<= 24;
 163         do_div(a,12288);
 164         return a;
 165 }
 166
 167 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 168                                int primary, int secondary)
 169 {
 170         if (-1 == secondary)
 171                 secondary = primary;
 172         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 173         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 174 }
 175
 176 #define SAA7134_MUTE_MASK 0xbb
 177 #define SAA7134_MUTE_ANALOG 0x04
 178 #define SAA7134_MUTE_I2S 0x40
 179
 180 static void mute_input_7134(struct saa7134_dev *dev)
 181 {
 182         unsigned int mute;
 183         struct saa7134_input *in;
 184         int ausel=0, ics=0, ocs=0;
 185         int mask;
 186
 187         /* look what is to do ... */
 188         in   = dev->input;
 189         mute = (dev->ctl_mute ||
 190                 (dev->automute  &&  (&card(dev).radio) != in));
 191         if (card(dev).mute.type) {
 192                 /*
 193                  * 7130 - we'll mute using some unconnected audio input
 194                  * 7134 - we'll probably should switch external mux with gpio
 195                  */
 196                 if (mute)
 197                         in = &card(dev).mute;
 198         }
 199
 200         if (dev->hw_mute  == mute &&
 201                 dev->hw_input == in && !dev->insuspend) {
 202                 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
 203                           mute, saa7134_input_name[in->type]);
 204                 return;
 205         }
 206
 207         audio_dbg(1, "ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 208                   dev->ctl_mute, dev->automute,
 209                   saa7134_input_name[dev->input->type], mute,
 210                   saa7134_input_name[in->type]);
 211         dev->hw_mute  = mute;
 212         dev->hw_input = in;
 213
 214         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 215                 /* 7134 mute */
 216                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 217                                                     SAA7134_MUTE_MASK |
 218                                                     SAA7134_MUTE_ANALOG |
 219                                                     SAA7134_MUTE_I2S :
 220                                                     SAA7134_MUTE_MASK);
 221
 222         /* switch internal audio mux */
 223         switch (in->amux) {
 224         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 225         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 226         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 227         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 228         }
 229         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 230         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 231         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 232         // for oss, we need to change the clock configuration
 233         if (in->amux == TV)
 234                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 235         else
 236                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 237
 238         /* switch gpio-connected external audio mux */
 239         if (0 == card(dev).gpiomask)
 240                 return;
 241
 242         mask = card(dev).gpiomask;
 243         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 244         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 245         saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 246 }
 247
 248 static void tvaudio_setmode(struct saa7134_dev *dev,
 249                             struct saa7134_tvaudio *audio,
 250                             char *note)
 251 {
 252         int acpf, tweak = 0;
 253
 254         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 255                 acpf = 0x19066;
 256         } else {
 257                 acpf = 0x1e000;
 258         }
 259         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 260                 tweak = audio_clock_tweak;
 261
 262         if (note)
 263                 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 264                         note, audio->name,
 265                         audio->carr1 / 1000, audio->carr1 % 1000,
 266                         audio->carr2 / 1000, audio->carr2 % 1000,
 267                         acpf, tweak);
 268
 269         acpf += tweak;
 270         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 271         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 272         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 273         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 274
 275         switch (audio->mode) {
 276         case TVAUDIO_FM_MONO:
 277         case TVAUDIO_FM_BG_STEREO:
 278                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 279                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 280                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 281                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 282                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 283                 break;
 284         case TVAUDIO_FM_K_STEREO:
 285                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 286                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 287                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 288                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 289                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 290                 break;
 291         case TVAUDIO_NICAM_FM:
 292                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 293                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 294                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 295                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 296                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 297                 break;
 298         case TVAUDIO_NICAM_AM:
 299                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 300                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 301                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 302                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 303                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 304                 break;
 305         case TVAUDIO_FM_SAT_STEREO:
 306                 /* not implemented (yet) */
 307                 break;
 308         }
 309 }
 310
 311 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 312 {
 313         if (dev->thread.scan1 == dev->thread.scan2 &&
 314             !kthread_should_stop()) {
 315                 if (timeout < 0) {
 316                         set_current_state(TASK_INTERRUPTIBLE);
 317                         schedule();
 318                 } else {
 319                         schedule_timeout_interruptible
 320                                                 (msecs_to_jiffies(timeout));
 321                 }
 322         }
 323         return dev->thread.scan1 != dev->thread.scan2;
 324 }
 325
 326 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 327 {
 328         __s32 left,right,value;
 329
 330         if (!(dev->tvnorm->id & scan->std)) {
 331                 value = 0;
 332                 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
 333                           scan->carr / 1000, scan->carr % 1000, scan->name);
 334                 return 0;
 335         }
 336
 337         if (audio_debug > 1) {
 338                 int i;
 339                 audio_dbg(1, "debug %d:", scan->carr);
 340                 for (i = -150; i <= 150; i += 30) {
 341                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 342                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 343                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 344                                 return -1;
 345                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 346                         if (0 == i)
 347                                 pr_cont("  #  %6d  # ", value >> 16);
 348                         else
 349                                 pr_cont(" %6d", value >> 16);
 350                 }
 351                 pr_cont("\n");
 352         }
 353
 354         tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 355         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 356         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 357                 return -1;
 358         left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 359
 360         tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 361         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 362         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 363                 return -1;
 364         right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 365
 366         left >>= 16;
 367         right >>= 16;
 368         value = left > right ? left - right : right - left;
 369         audio_dbg(1, "scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 370                   scan->carr / 1000, scan->carr % 1000,
 371                   scan->name, value, left, right);
 372         return value;
 373 }
 374
 375
 376 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 377 {
 378         __u32 idp, nicam, nicam_status;
 379         int retval = -1;
 380
 381         switch (audio->mode) {
 382         case TVAUDIO_FM_MONO:
 383                 return V4L2_TUNER_SUB_MONO;
 384         case TVAUDIO_FM_K_STEREO:
 385         case TVAUDIO_FM_BG_STEREO:
 386                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 387                 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
 388                 if (0x03 == (idp & 0x03))
 389                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 390                 else if (0x05 == (idp & 0x05))
 391                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 392                 else if (0x01 == (idp & 0x01))
 393                         retval = V4L2_TUNER_SUB_MONO;
 394                 break;
 395         case TVAUDIO_FM_SAT_STEREO:
 396                 /* not implemented (yet) */
 397                 break;
 398         case TVAUDIO_NICAM_FM:
 399         case TVAUDIO_NICAM_AM:
 400                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 401                 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
 402                 if (nicam & 0x1) {
 403                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 404                         audio_dbg(1, "getstereo: nicam_status=0x%x\n",
 405                                   nicam_status);
 406
 407                         switch (nicam_status & 0x03) {
 408                             case 0x01:
 409                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 410                                 break;
 411                             case 0x02:
 412                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 413                                 break;
 414                             default:
 415                                 retval = V4L2_TUNER_SUB_MONO;
 416                         }
 417                 } else {
 418                         /* No nicam detected */
 419                 }
 420                 break;
 421         }
 422         if (retval != -1)
 423                 audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
 424                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 425                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 426                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 427                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 428         return retval;
 429 }
 430
 431 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 432                              u32 mode)
 433 {
 434         static char *name[] = {
 435                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 436                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 437                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 438                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 439                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 440         };
 441         static u32 fm[] = {
 442                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 443                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 444                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 445                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 446                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 447         };
 448         u32 reg;
 449
 450         switch (audio->mode) {
 451         case TVAUDIO_FM_MONO:
 452                 /* nothing to do ... */
 453                 break;
 454         case TVAUDIO_FM_K_STEREO:
 455         case TVAUDIO_FM_BG_STEREO:
 456         case TVAUDIO_NICAM_AM:
 457         case TVAUDIO_NICAM_FM:
 458                 audio_dbg(1, "setstereo [fm] => %s\n",
 459                           name[mode % ARRAY_SIZE(name)]);
 460                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 461                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 462                 break;
 463         case TVAUDIO_FM_SAT_STEREO:
 464                 /* Not implemented */
 465                 break;
 466         }
 467         return 0;
 468 }
 469
 470 static int tvaudio_thread(void *data)
 471 {
 472         struct saa7134_dev *dev = data;
 473         int carr_vals[ARRAY_SIZE(mainscan)];
 474         unsigned int i, audio, nscan;
 475         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 476
 477         set_freezable();
 478
 479         for (;;) {
 480                 tvaudio_sleep(dev,-1);
 481                 if (kthread_should_stop())
 482                         goto done;
 483
 484         restart:
 485                 try_to_freeze();
 486
 487                 dev->thread.scan1 = dev->thread.scan2;
 488                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 489                           dev->thread.scan1);
 490                 dev->tvaudio  = NULL;
 491
 492                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 493                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 494
 495                 if (dev->ctl_automute)
 496                         dev->automute = 1;
 497
 498                 mute_input_7134(dev);
 499
 500                 /* give the tuner some time */
 501                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 502                         goto restart;
 503
 504                 max1 = 0;
 505                 max2 = 0;
 506                 nscan = 0;
 507                 carrier = 0;
 508                 default_carrier = 0;
 509                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 510                         if (!(dev->tvnorm->id & mainscan[i].std))
 511                                 continue;
 512                         if (!default_carrier)
 513                                 default_carrier = mainscan[i].carr;
 514                         nscan++;
 515                 }
 516
 517                 if (1 == nscan) {
 518                         /* only one candidate -- skip scan ;) */
 519                         audio_dbg(1, "only one main carrier candidate - skipping scan\n");
 520                         max1 = 12345;
 521                         carrier = default_carrier;
 522                 } else {
 523                         /* scan for the main carrier */
 524                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 525                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 526                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 527                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 528                                 if (dev->thread.scan1 != dev->thread.scan2)
 529                                         goto restart;
 530                         }
 531                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 532                                 if (max1 < carr_vals[i]) {
 533                                         max2 = max1;
 534                                         max1 = carr_vals[i];
 535                                         carrier = mainscan[i].carr;
 536                                 } else if (max2 < carr_vals[i]) {
 537                                         max2 = carr_vals[i];
 538                                 }
 539                         }
 540                 }
 541
 542                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 543                         /* found good carrier */
 544                         audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 545                                   dev->tvnorm->name, carrier/1000, carrier%1000,
 546                                   max1, max2);
 547                         dev->last_carrier = carrier;
 548                         dev->automute = 0;
 549
 550                 } else if (0 != dev->last_carrier) {
 551                         /* no carrier -- try last detected one as fallback */
 552                         carrier = dev->last_carrier;
 553                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
 554                                   carrier/1000, carrier%1000);
 555                         dev->automute = 1;
 556
 557                 } else {
 558                         /* no carrier + no fallback -- use default */
 559                         carrier = default_carrier;
 560                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
 561                                   carrier/1000, carrier%1000);
 562                         dev->automute = 1;
 563                 }
 564                 tvaudio_setcarrier(dev,carrier,carrier);
 565                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 566                 saa7134_tvaudio_setmute(dev);
 567                 /* find the exact tv audio norm */
 568                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 569                         if (dev->tvnorm->id != UNSET &&
 570                                 !(dev->tvnorm->id & tvaudio[i].std))
 571                                 continue;
 572                         if (tvaudio[i].carr1 != carrier)
 573                                 continue;
 574                         /* Note: at least the primary carrier is right here */
 575                         if (UNSET == audio)
 576                                 audio = i;
 577                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 578                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 579                                 goto restart;
 580                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 581                                 audio = i;
 582                                 break;
 583                         }
 584                 }
 585                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 586                 if (UNSET == audio)
 587                         continue;
 588                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 589
 590                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 591                 dev->tvaudio = &tvaudio[audio];
 592
 593                 lastmode = 42;
 594                 for (;;) {
 595
 596                         try_to_freeze();
 597
 598                         if (tvaudio_sleep(dev,5000))
 599                                 goto restart;
 600                         if (kthread_should_stop())
 601                                 break;
 602                         if (UNSET == dev->thread.mode) {
 603                                 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
 604                                 mode = saa7134_tvaudio_rx2mode(rx);
 605                         } else {
 606                                 mode = dev->thread.mode;
 607                         }
 608                         if (lastmode != mode) {
 609                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 610                                 lastmode = mode;
 611                         }
 612                 }
 613         }
 614
 615  done:
 616         dev->thread.stopped = 1;
 617         return 0;
 618 }
 619
 620 /* ------------------------------------------------------------------ */
 621 /* saa7133 / saa7135 code                                             */
 622
 623 static char *stdres[0x20] = {
 624         [0x00] = "no standard detected",
 625         [0x01] = "B/G (in progress)",
 626         [0x02] = "D/K (in progress)",
 627         [0x03] = "M (in progress)",
 628
 629         [0x04] = "B/G A2",
 630         [0x05] = "B/G NICAM",
 631         [0x06] = "D/K A2 (1)",
 632         [0x07] = "D/K A2 (2)",
 633         [0x08] = "D/K A2 (3)",
 634         [0x09] = "D/K NICAM",
 635         [0x0a] = "L NICAM",
 636         [0x0b] = "I NICAM",
 637
 638         [0x0c] = "M Korea",
 639         [0x0d] = "M BTSC ",
 640         [0x0e] = "M EIAJ",
 641
 642         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 643         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 644         [0x11] = "FM radio / IF sel / 50 deemp",
 645         [0x12] = "FM radio / IF sel / 75 deemp",
 646
 647         [0x13 ... 0x1e ] = "unknown",
 648         [0x1f] = "??? [in progress]",
 649 };
 650
 651 #define DSP_RETRY 32
 652 #define DSP_DELAY 16
 653 #define SAA7135_DSP_RWCLEAR_RERR 1
 654
 655 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 656 {
 657         int state = saa_readb(SAA7135_DSP_RWSTATE);
 658         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 659                 audio_dbg(2, "%s: resetting error bit\n", dev->name);
 660                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 661         }
 662         return 0;
 663 }
 664
 665 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 666 {
 667         int state, count = DSP_RETRY;
 668
 669         state = saa_readb(SAA7135_DSP_RWSTATE);
 670         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 671                 pr_warn("%s: dsp access error\n", dev->name);
 672                 saa_dsp_reset_error_bit(dev);
 673                 return -EIO;
 674         }
 675         while (0 == (state & bit)) {
 676                 if (unlikely(0 == count)) {
 677                         pr_err("dsp access wait timeout [bit=%s]\n",
 678                                  (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 679                                  (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 680                                  (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 681                                  "???");
 682                         return -EIO;
 683                 }
 684                 saa_wait(DSP_DELAY);
 685                 state = saa_readb(SAA7135_DSP_RWSTATE);
 686                 count--;
 687         }
 688         return 0;
 689 }
 690
 691
 692 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 693 {
 694         int err;
 695
 696         audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n",
 697                   (reg << 2) & 0xffffffff, value);
 698         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 699         if (err < 0)
 700                 return err;
 701         saa_writel(reg,value);
 702         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 703         if (err < 0)
 704                 return err;
 705         return 0;
 706 }
 707
 708 static int getstereo_7133(struct saa7134_dev *dev)
 709 {
 710         int retval = V4L2_TUNER_SUB_MONO;
 711         u32 value;
 712
 713         value = saa_readl(0x528 >> 2);
 714         if (value & 0x20)
 715                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 716         if (value & 0x40)
 717                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 718         return retval;
 719 }
 720
 721 static int mute_input_7133(struct saa7134_dev *dev)
 722 {
 723         u32 reg = 0;
 724         u32 xbarin, xbarout;
 725         int mask;
 726         struct saa7134_input *in;
 727
 728         xbarin = 0x03;
 729         switch (dev->input->amux) {
 730         case TV:
 731                 reg = 0x02;
 732                 xbarin = 0;
 733                 break;
 734         case LINE1:
 735                 reg = 0x00;
 736                 break;
 737         case LINE2:
 738         case LINE2_LEFT:
 739                 reg = 0x09;
 740                 break;
 741         }
 742         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 743         if (dev->ctl_mute) {
 744                 reg = 0x07;
 745                 xbarout = 0xbbbbbb;
 746         } else
 747                 xbarout = 0xbbbb10;
 748         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 749
 750         saa_writel(0x594 >> 2, reg);
 751
 752
 753         /* switch gpio-connected external audio mux */
 754         if (0 != card(dev).gpiomask) {
 755                 mask = card(dev).gpiomask;
 756
 757                 if (card(dev).mute.type && dev->ctl_mute)
 758                         in = &card(dev).mute;
 759                 else
 760                         in = dev->input;
 761
 762                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 763                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 764                 saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 765         }
 766
 767         return 0;
 768 }
 769
 770 static int tvaudio_thread_ddep(void *data)
 771 {
 772         struct saa7134_dev *dev = data;
 773         u32 value, norms;
 774
 775         set_freezable();
 776         for (;;) {
 777                 tvaudio_sleep(dev,-1);
 778                 if (kthread_should_stop())
 779                         goto done;
 780         restart:
 781                 try_to_freeze();
 782
 783                 dev->thread.scan1 = dev->thread.scan2;
 784                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 785                           dev->thread.scan1);
 786
 787                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 788                         /* insmod option override */
 789                         norms = (audio_ddep << 2) | 0x01;
 790                         audio_dbg(1, "ddep override: %s\n",
 791                                   stdres[audio_ddep]);
 792                 } else if (&card(dev).radio == dev->input) {
 793                         audio_dbg(1, "FM Radio\n");
 794                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 795                                 norms = (0x11 << 2) | 0x01;
 796                                 /* set IF frequency to 5.5 MHz */
 797                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 798                         } else {
 799                                 norms = (0x0f << 2) | 0x01;
 800                         }
 801                 } else {
 802                         /* (let chip) scan for sound carrier */
 803                         norms = 0;
 804                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 805                                 norms |= 0x04;
 806                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 807                                 norms |= 0x20;
 808                         if (dev->tvnorm->id & V4L2_STD_DK)
 809                                 norms |= 0x08;
 810                         if (dev->tvnorm->id & V4L2_STD_MN)
 811                                 norms |= 0x40;
 812                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 813                                 norms |= 0x10;
 814                         if (0 == norms)
 815                                 norms = 0x7c; /* all */
 816                         audio_dbg(1, "scanning:%s%s%s%s%s\n",
 817                                   (norms & 0x04) ? " B/G"  : "",
 818                                   (norms & 0x08) ? " D/K"  : "",
 819                                   (norms & 0x10) ? " L/L'" : "",
 820                                   (norms & 0x20) ? " I"    : "",
 821                                   (norms & 0x40) ? " M"    : "");
 822                 }
 823
 824                 /* kick automatic standard detection */
 825                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 826                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 827
 828                 /* setup crossbars */
 829                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 830                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 831
 832                 if (tvaudio_sleep(dev,3000))
 833                         goto restart;
 834                 value = saa_readl(0x528 >> 2) & 0xffffff;
 835
 836                 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
 837                           value, stdres[value & 0x1f],
 838                           (value & 0x000020) ? ",stereo" : "",
 839                           (value & 0x000040) ? ",dual"   : "");
 840                 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 841                           (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 842                           (value & 0x000100) ? " A2/EIAJ dual "           : "",
 843                           (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 844                           (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 845
 846                           (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 847                           (value & 0x001000) ? " SAP carrier "            : "",
 848                           (value & 0x002000) ? " BTSC stereo noise mute " : "",
 849                           (value & 0x004000) ? " SAP noise mute "         : "",
 850                           (value & 0x008000) ? " VDSP "                   : "",
 851
 852                           (value & 0x010000) ? " NICST "                  : "",
 853                           (value & 0x020000) ? " NICDU "                  : "",
 854                           (value & 0x040000) ? " NICAM muted "            : "",
 855                           (value & 0x080000) ? " NICAM reserve sound "    : "",
 856
 857                           (value & 0x100000) ? " init done "              : "");
 858         }
 859
 860  done:
 861         dev->thread.stopped = 1;
 862         return 0;
 863 }
 864
 865 /* ------------------------------------------------------------------ */
 866 /* common stuff + external entry points                               */
 867
 868 void saa7134_enable_i2s(struct saa7134_dev *dev)
 869 {
 870         int i2s_format;
 871
 872         if (!card_is_empress(dev))
 873                 return;
 874
 875         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 876                 return;
 877
 878         /* configure GPIO for out */
 879         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 880
 881         switch (dev->pci->device) {
 882         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 883         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 884             /* Set I2S format (SONY)  */
 885             saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 886             /* Start I2S */
 887             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 888             break;
 889
 890         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 891             i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 892
 893             /* enable I2S audio output for the mpeg encoder */
 894             saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 895             saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 896             saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 897             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 898
 899         default:
 900             break;
 901         }
 902 }
 903
 904 int saa7134_tvaudio_rx2mode(u32 rx)
 905 {
 906         u32 mode;
 907
 908         mode = V4L2_TUNER_MODE_MONO;
 909         if (rx & V4L2_TUNER_SUB_STEREO)
 910                 mode = V4L2_TUNER_MODE_STEREO;
 911         else if (rx & V4L2_TUNER_SUB_LANG1)
 912                 mode = V4L2_TUNER_MODE_LANG1;
 913         else if (rx & V4L2_TUNER_SUB_LANG2)
 914                 mode = V4L2_TUNER_MODE_LANG2;
 915         return mode;
 916 }
 917
 918 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 919 {
 920         switch (dev->pci->device) {
 921         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 922         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 923                 mute_input_7134(dev);
 924                 break;
 925         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 926         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 927                 mute_input_7133(dev);
 928                 break;
 929         }
 930 }
 931
 932 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 933                               struct saa7134_input *in)
 934 {
 935         dev->input = in;
 936         switch (dev->pci->device) {
 937         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 938         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 939                 mute_input_7134(dev);
 940                 break;
 941         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 942         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 943                 mute_input_7133(dev);
 944                 break;
 945         }
 946         saa7134_enable_i2s(dev);
 947 }
 948
 949 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 950 {
 951         switch (dev->pci->device) {
 952         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 953                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 954                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 955                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 956                 break;
 957         }
 958 }
 959
 960 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 961 {
 962         int retval = V4L2_TUNER_SUB_MONO;
 963
 964         switch (dev->pci->device) {
 965         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 966                 if (dev->tvaudio)
 967                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 968                 break;
 969         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 970         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 971                 retval = getstereo_7133(dev);
 972                 break;
 973         }
 974         return retval;
 975 }
 976
 977 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 978 {
 979         int clock = saa7134_boards[dev->board].audio_clock;
 980
 981         if (UNSET != audio_clock_override)
 982                 clock = audio_clock_override;
 983
 984         switch (dev->pci->device) {
 985         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 986                 /* init all audio registers */
 987                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 988                 if (need_resched())
 989                         schedule();
 990                 else
 991                         udelay(10);
 992
 993                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 994                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 995                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 996                 /* frame locked audio is mandatory for NICAM */
 997                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 998                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 999                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1000                 break;
1001         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1002         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1003                 saa_writel(0x598 >> 2, clock);
1004                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1005                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1006         }
1007 }
1008
1009 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1010 {
1011         int (*my_thread)(void *data) = NULL;
1012
1013         switch (dev->pci->device) {
1014         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1015                 my_thread = tvaudio_thread;
1016                 break;
1017         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1018         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1019                 my_thread = tvaudio_thread_ddep;
1020                 break;
1021         }
1022
1023         dev->thread.thread = NULL;
1024         dev->thread.scan1 = dev->thread.scan2 = 0;
1025         if (my_thread) {
1026                 saa7134_tvaudio_init(dev);
1027                 /* start tvaudio thread */
1028                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1029                 if (IS_ERR(dev->thread.thread)) {
1030                         pr_warn("%s: kernel_thread() failed\n",
1031                                dev->name);
1032                         /* XXX: missing error handling here */
1033                 }
1034         }
1035
1036         saa7134_enable_i2s(dev);
1037         return 0;
1038 }
1039
1040 int saa7134_tvaudio_close(struct saa7134_dev *dev)
1041 {
1042         dev->automute = 1;
1043         /* anything else to undo? */
1044         return 0;
1045 }
1046
1047 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1048 {
1049         /* shutdown tvaudio thread */
1050         if (dev->thread.thread && !dev->thread.stopped)
1051                 kthread_stop(dev->thread.thread);
1052
1053         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1054         return 0;
1055 }
1056
1057 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1058 {
1059         if (dev->input->amux != TV) {
1060                 audio_dbg(1, "sound IF not in use, skipping scan\n");
1061                 dev->automute = 0;
1062                 saa7134_tvaudio_setmute(dev);
1063         } else if (dev->thread.thread) {
1064                 dev->thread.mode = UNSET;
1065                 dev->thread.scan2++;
1066
1067                 if (!dev->insuspend && !dev->thread.stopped)
1068                         wake_up_process(dev->thread.thread);
1069         } else {
1070                 dev->automute = 0;
1071                 saa7134_tvaudio_setmute(dev);
1072         }
1073         return 0;
1074 }
1075
1076 EXPORT_SYMBOL(saa_dsp_writel);
1077 EXPORT_SYMBOL(saa7134_tvaudio_setmute);