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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  * device driver for philips saa7134 based TV cards
   5  * tv audio decoder (fm stereo, nicam, ...)
   6  *
   7  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   8  */
   9
  10 #include "saa7134.h"
  11 #include "saa7134-reg.h"
  12
  13 #include <linux/init.h>
  14 #include <linux/list.h>
  15 #include <linux/module.h>
  16 #include <linux/kernel.h>
  17 #include <linux/kthread.h>
  18 #include <linux/delay.h>
  19 #include <linux/freezer.h>
  20 #include <asm/div64.h>
  21
  22 /* ------------------------------------------------------------------ */
  23
  24 static unsigned int audio_debug;
  25 module_param(audio_debug, int, 0644);
  26 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  27
  28 static unsigned int audio_ddep;
  29 module_param(audio_ddep, int, 0644);
  30 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  31
  32 static int audio_clock_override = UNSET;
  33 module_param(audio_clock_override, int, 0644);
  34
  35 static int audio_clock_tweak;
  36 module_param(audio_clock_tweak, int, 0644);
  37 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  38
  39 #define audio_dbg(level, fmt, arg...) do { \
  40         if (audio_debug >= level) \
  41                 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
  42         } while (0)
  43
  44 /* msecs */
  45 #define SCAN_INITIAL_DELAY     1000
  46 #define SCAN_SAMPLE_DELAY       200
  47 #define SCAN_SUBCARRIER_DELAY  2000
  48
  49 /* ------------------------------------------------------------------ */
  50 /* saa7134 code                                                       */
  51
  52 static struct mainscan {
  53         char         *name;
  54         v4l2_std_id  std;
  55         int          carr;
  56 } mainscan[] = {
  57         {
  58                 .name = "MN",
  59                 .std  = V4L2_STD_MN,
  60                 .carr = 4500,
  61         },{
  62                 .name = "BGH",
  63                 .std  = V4L2_STD_B | V4L2_STD_GH,
  64                 .carr = 5500,
  65         },{
  66                 .name = "I",
  67                 .std  = V4L2_STD_PAL_I,
  68                 .carr = 6000,
  69         },{
  70                 .name = "DKL",
  71                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  72                 .carr = 6500,
  73         }
  74 };
  75
  76 static struct saa7134_tvaudio tvaudio[] = {
  77         {
  78                 .name          = "PAL-B/G FM-stereo",
  79                 .std           = V4L2_STD_PAL_BG,
  80                 .mode          = TVAUDIO_FM_BG_STEREO,
  81                 .carr1         = 5500,
  82                 .carr2         = 5742,
  83         },{
  84                 .name          = "PAL-D/K1 FM-stereo",
  85                 .std           = V4L2_STD_PAL_DK,
  86                 .carr1         = 6500,
  87                 .carr2         = 6258,
  88                 .mode          = TVAUDIO_FM_BG_STEREO,
  89         },{
  90                 .name          = "PAL-D/K2 FM-stereo",
  91                 .std           = V4L2_STD_PAL_DK,
  92                 .carr1         = 6500,
  93                 .carr2         = 6742,
  94                 .mode          = TVAUDIO_FM_BG_STEREO,
  95         },{
  96                 .name          = "PAL-D/K3 FM-stereo",
  97                 .std           = V4L2_STD_PAL_DK,
  98                 .carr1         = 6500,
  99                 .carr2         = 5742,
 100                 .mode          = TVAUDIO_FM_BG_STEREO,
 101         },{
 102                 .name          = "PAL-B/G NICAM",
 103                 .std           = V4L2_STD_PAL_BG,
 104                 .carr1         = 5500,
 105                 .carr2         = 5850,
 106                 .mode          = TVAUDIO_NICAM_FM,
 107         },{
 108                 .name          = "PAL-I NICAM",
 109                 .std           = V4L2_STD_PAL_I,
 110                 .carr1         = 6000,
 111                 .carr2         = 6552,
 112                 .mode          = TVAUDIO_NICAM_FM,
 113         },{
 114                 .name          = "PAL-D/K NICAM",
 115                 .std           = V4L2_STD_PAL_DK,
 116                 .carr1         = 6500,
 117                 .carr2         = 5850,
 118                 .mode          = TVAUDIO_NICAM_FM,
 119         },{
 120                 .name          = "SECAM-L NICAM",
 121                 .std           = V4L2_STD_SECAM_L,
 122                 .carr1         = 6500,
 123                 .carr2         = 5850,
 124                 .mode          = TVAUDIO_NICAM_AM,
 125         },{
 126                 .name          = "SECAM-D/K NICAM",
 127                 .std           = V4L2_STD_SECAM_DK,
 128                 .carr1         = 6500,
 129                 .carr2         = 5850,
 130                 .mode          = TVAUDIO_NICAM_FM,
 131         },{
 132                 .name          = "NTSC-A2 FM-stereo",
 133                 .std           = V4L2_STD_NTSC,
 134                 .carr1         = 4500,
 135                 .carr2         = 4724,
 136                 .mode          = TVAUDIO_FM_K_STEREO,
 137         },{
 138                 .name          = "NTSC-M",
 139                 .std           = V4L2_STD_NTSC,
 140                 .carr1         = 4500,
 141                 .carr2         = -1,
 142                 .mode          = TVAUDIO_FM_MONO,
 143         }
 144 };
 145 #define TVAUDIO ARRAY_SIZE(tvaudio)
 146
 147 /* ------------------------------------------------------------------ */
 148
 149 static u32 tvaudio_carr2reg(u32 carrier)
 150 {
 151         u64 a = carrier;
 152
 153         a <<= 24;
 154         do_div(a,12288);
 155         return a;
 156 }
 157
 158 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 159                                int primary, int secondary)
 160 {
 161         if (-1 == secondary)
 162                 secondary = primary;
 163         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 164         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 165 }
 166
 167 #define SAA7134_MUTE_MASK 0xbb
 168 #define SAA7134_MUTE_ANALOG 0x04
 169 #define SAA7134_MUTE_I2S 0x40
 170
 171 static void mute_input_7134(struct saa7134_dev *dev)
 172 {
 173         unsigned int mute;
 174         struct saa7134_input *in;
 175         int ausel=0, ics=0, ocs=0;
 176         int mask;
 177
 178         /* look what is to do ... */
 179         in   = dev->input;
 180         mute = (dev->ctl_mute ||
 181                 (dev->automute  &&  (&card(dev).radio) != in));
 182         if (card(dev).mute.type) {
 183                 /*
 184                  * 7130 - we'll mute using some unconnected audio input
 185                  * 7134 - we'll probably should switch external mux with gpio
 186                  */
 187                 if (mute)
 188                         in = &card(dev).mute;
 189         }
 190
 191         if (dev->hw_mute  == mute &&
 192                 dev->hw_input == in && !dev->insuspend) {
 193                 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
 194                           mute, saa7134_input_name[in->type]);
 195                 return;
 196         }
 197
 198         audio_dbg(1, "ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 199                   dev->ctl_mute, dev->automute,
 200                   saa7134_input_name[dev->input->type], mute,
 201                   saa7134_input_name[in->type]);
 202         dev->hw_mute  = mute;
 203         dev->hw_input = in;
 204
 205         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 206                 /* 7134 mute */
 207                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 208                                                     SAA7134_MUTE_MASK |
 209                                                     SAA7134_MUTE_ANALOG |
 210                                                     SAA7134_MUTE_I2S :
 211                                                     SAA7134_MUTE_MASK);
 212
 213         /* switch internal audio mux */
 214         switch (in->amux) {
 215         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 216         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 217         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 218         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 219         }
 220         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 221         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 222         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 223         // for oss, we need to change the clock configuration
 224         if (in->amux == TV)
 225                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 226         else
 227                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 228
 229         /* switch gpio-connected external audio mux */
 230         if (0 == card(dev).gpiomask)
 231                 return;
 232
 233         mask = card(dev).gpiomask;
 234         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 235         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 236         saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 237 }
 238
 239 static void tvaudio_setmode(struct saa7134_dev *dev,
 240                             struct saa7134_tvaudio *audio,
 241                             char *note)
 242 {
 243         int acpf, tweak = 0;
 244
 245         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 246                 acpf = 0x19066;
 247         } else {
 248                 acpf = 0x1e000;
 249         }
 250         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 251                 tweak = audio_clock_tweak;
 252
 253         if (note)
 254                 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 255                         note, audio->name,
 256                         audio->carr1 / 1000, audio->carr1 % 1000,
 257                         audio->carr2 / 1000, audio->carr2 % 1000,
 258                         acpf, tweak);
 259
 260         acpf += tweak;
 261         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 262         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 263         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 264         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 265
 266         switch (audio->mode) {
 267         case TVAUDIO_FM_MONO:
 268         case TVAUDIO_FM_BG_STEREO:
 269                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 270                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 271                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 272                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 273                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 274                 break;
 275         case TVAUDIO_FM_K_STEREO:
 276                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 277                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 278                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 279                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 280                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 281                 break;
 282         case TVAUDIO_NICAM_FM:
 283                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 284                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 285                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 286                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 287                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 288                 break;
 289         case TVAUDIO_NICAM_AM:
 290                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 291                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 292                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 293                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 294                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 295                 break;
 296         case TVAUDIO_FM_SAT_STEREO:
 297                 /* not implemented (yet) */
 298                 break;
 299         }
 300 }
 301
 302 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 303 {
 304         if (dev->thread.scan1 == dev->thread.scan2 &&
 305             !kthread_should_stop()) {
 306                 if (timeout < 0) {
 307                         set_current_state(TASK_INTERRUPTIBLE);
 308                         schedule();
 309                 } else {
 310                         schedule_timeout_interruptible
 311                                                 (msecs_to_jiffies(timeout));
 312                 }
 313         }
 314         return dev->thread.scan1 != dev->thread.scan2;
 315 }
 316
 317 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 318 {
 319         __s32 left,right,value;
 320
 321         if (!(dev->tvnorm->id & scan->std)) {
 322                 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
 323                           scan->carr / 1000, scan->carr % 1000, scan->name);
 324                 return 0;
 325         }
 326
 327         if (audio_debug > 1) {
 328                 int i;
 329                 audio_dbg(1, "debug %d:", scan->carr);
 330                 for (i = -150; i <= 150; i += 30) {
 331                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 332                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 333                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 334                                 return -1;
 335                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 336                         if (0 == i)
 337                                 pr_cont("  #  %6d  # ", value >> 16);
 338                         else
 339                                 pr_cont(" %6d", value >> 16);
 340                 }
 341                 pr_cont("\n");
 342         }
 343
 344         tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 345         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 346         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 347                 return -1;
 348         left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 349
 350         tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 351         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 352         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 353                 return -1;
 354         right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 355
 356         left >>= 16;
 357         right >>= 16;
 358         value = left > right ? left - right : right - left;
 359         audio_dbg(1, "scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 360                   scan->carr / 1000, scan->carr % 1000,
 361                   scan->name, value, left, right);
 362         return value;
 363 }
 364
 365
 366 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 367 {
 368         __u32 idp, nicam, nicam_status;
 369         int retval = -1;
 370
 371         switch (audio->mode) {
 372         case TVAUDIO_FM_MONO:
 373                 return V4L2_TUNER_SUB_MONO;
 374         case TVAUDIO_FM_K_STEREO:
 375         case TVAUDIO_FM_BG_STEREO:
 376                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 377                 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
 378                 if (0x03 == (idp & 0x03))
 379                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 380                 else if (0x05 == (idp & 0x05))
 381                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 382                 else if (0x01 == (idp & 0x01))
 383                         retval = V4L2_TUNER_SUB_MONO;
 384                 break;
 385         case TVAUDIO_FM_SAT_STEREO:
 386                 /* not implemented (yet) */
 387                 break;
 388         case TVAUDIO_NICAM_FM:
 389         case TVAUDIO_NICAM_AM:
 390                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 391                 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
 392                 if (nicam & 0x1) {
 393                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 394                         audio_dbg(1, "getstereo: nicam_status=0x%x\n",
 395                                   nicam_status);
 396
 397                         switch (nicam_status & 0x03) {
 398                             case 0x01:
 399                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 400                                 break;
 401                             case 0x02:
 402                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 403                                 break;
 404                             default:
 405                                 retval = V4L2_TUNER_SUB_MONO;
 406                         }
 407                 } else {
 408                         /* No nicam detected */
 409                 }
 410                 break;
 411         }
 412         if (retval != -1)
 413                 audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
 414                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 415                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 416                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 417                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 418         return retval;
 419 }
 420
 421 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 422                              u32 mode)
 423 {
 424         static char *name[] = {
 425                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 426                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 427                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 428                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 429                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 430         };
 431         static u32 fm[] = {
 432                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 433                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 434                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 435                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 436                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 437         };
 438         u32 reg;
 439
 440         switch (audio->mode) {
 441         case TVAUDIO_FM_MONO:
 442                 /* nothing to do ... */
 443                 break;
 444         case TVAUDIO_FM_K_STEREO:
 445         case TVAUDIO_FM_BG_STEREO:
 446         case TVAUDIO_NICAM_AM:
 447         case TVAUDIO_NICAM_FM:
 448                 audio_dbg(1, "setstereo [fm] => %s\n",
 449                           name[mode % ARRAY_SIZE(name)]);
 450                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 451                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 452                 break;
 453         case TVAUDIO_FM_SAT_STEREO:
 454                 /* Not implemented */
 455                 break;
 456         }
 457         return 0;
 458 }
 459
 460 static int tvaudio_thread(void *data)
 461 {
 462         struct saa7134_dev *dev = data;
 463         int carr_vals[ARRAY_SIZE(mainscan)];
 464         unsigned int i, audio, nscan;
 465         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 466
 467         set_freezable();
 468
 469         for (;;) {
 470                 tvaudio_sleep(dev,-1);
 471                 if (kthread_should_stop())
 472                         goto done;
 473
 474         restart:
 475                 try_to_freeze();
 476
 477                 dev->thread.scan1 = dev->thread.scan2;
 478                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 479                           dev->thread.scan1);
 480                 dev->tvaudio  = NULL;
 481
 482                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 483                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 484
 485                 if (dev->ctl_automute)
 486                         dev->automute = 1;
 487
 488                 mute_input_7134(dev);
 489
 490                 /* give the tuner some time */
 491                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 492                         goto restart;
 493
 494                 max1 = 0;
 495                 max2 = 0;
 496                 nscan = 0;
 497                 carrier = 0;
 498                 default_carrier = 0;
 499                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 500                         if (!(dev->tvnorm->id & mainscan[i].std))
 501                                 continue;
 502                         if (!default_carrier)
 503                                 default_carrier = mainscan[i].carr;
 504                         nscan++;
 505                 }
 506
 507                 if (1 == nscan) {
 508                         /* only one candidate -- skip scan ;) */
 509                         audio_dbg(1, "only one main carrier candidate - skipping scan\n");
 510                         max1 = 12345;
 511                         carrier = default_carrier;
 512                 } else {
 513                         /* scan for the main carrier */
 514                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 515                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 516                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 517                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 518                                 if (dev->thread.scan1 != dev->thread.scan2)
 519                                         goto restart;
 520                         }
 521                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 522                                 if (max1 < carr_vals[i]) {
 523                                         max2 = max1;
 524                                         max1 = carr_vals[i];
 525                                         carrier = mainscan[i].carr;
 526                                 } else if (max2 < carr_vals[i]) {
 527                                         max2 = carr_vals[i];
 528                                 }
 529                         }
 530                 }
 531
 532                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 533                         /* found good carrier */
 534                         audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 535                                   dev->tvnorm->name, carrier/1000, carrier%1000,
 536                                   max1, max2);
 537                         dev->last_carrier = carrier;
 538                         dev->automute = 0;
 539
 540                 } else if (0 != dev->last_carrier) {
 541                         /* no carrier -- try last detected one as fallback */
 542                         carrier = dev->last_carrier;
 543                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
 544                                   carrier/1000, carrier%1000);
 545                         dev->automute = 1;
 546
 547                 } else {
 548                         /* no carrier + no fallback -- use default */
 549                         carrier = default_carrier;
 550                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
 551                                   carrier/1000, carrier%1000);
 552                         dev->automute = 1;
 553                 }
 554                 tvaudio_setcarrier(dev,carrier,carrier);
 555                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 556                 saa7134_tvaudio_setmute(dev);
 557                 /* find the exact tv audio norm */
 558                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 559                         if (dev->tvnorm->id != UNSET &&
 560                                 !(dev->tvnorm->id & tvaudio[i].std))
 561                                 continue;
 562                         if (tvaudio[i].carr1 != carrier)
 563                                 continue;
 564                         /* Note: at least the primary carrier is right here */
 565                         if (UNSET == audio)
 566                                 audio = i;
 567                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 568                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 569                                 goto restart;
 570                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 571                                 audio = i;
 572                                 break;
 573                         }
 574                 }
 575                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 576                 if (UNSET == audio)
 577                         continue;
 578                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 579
 580                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 581                 dev->tvaudio = &tvaudio[audio];
 582
 583                 lastmode = 42;
 584                 for (;;) {
 585
 586                         try_to_freeze();
 587
 588                         if (tvaudio_sleep(dev,5000))
 589                                 goto restart;
 590                         if (kthread_should_stop())
 591                                 break;
 592                         if (UNSET == dev->thread.mode) {
 593                                 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
 594                                 mode = saa7134_tvaudio_rx2mode(rx);
 595                         } else {
 596                                 mode = dev->thread.mode;
 597                         }
 598                         if (lastmode != mode) {
 599                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 600                                 lastmode = mode;
 601                         }
 602                 }
 603         }
 604
 605  done:
 606         dev->thread.stopped = 1;
 607         return 0;
 608 }
 609
 610 /* ------------------------------------------------------------------ */
 611 /* saa7133 / saa7135 code                                             */
 612
 613 static char *stdres[0x20] = {
 614         [0x00] = "no standard detected",
 615         [0x01] = "B/G (in progress)",
 616         [0x02] = "D/K (in progress)",
 617         [0x03] = "M (in progress)",
 618
 619         [0x04] = "B/G A2",
 620         [0x05] = "B/G NICAM",
 621         [0x06] = "D/K A2 (1)",
 622         [0x07] = "D/K A2 (2)",
 623         [0x08] = "D/K A2 (3)",
 624         [0x09] = "D/K NICAM",
 625         [0x0a] = "L NICAM",
 626         [0x0b] = "I NICAM",
 627
 628         [0x0c] = "M Korea",
 629         [0x0d] = "M BTSC ",
 630         [0x0e] = "M EIAJ",
 631
 632         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 633         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 634         [0x11] = "FM radio / IF sel / 50 deemp",
 635         [0x12] = "FM radio / IF sel / 75 deemp",
 636
 637         [0x13 ... 0x1e ] = "unknown",
 638         [0x1f] = "??? [in progress]",
 639 };
 640
 641 #define DSP_RETRY 32
 642 #define DSP_DELAY 16
 643 #define SAA7135_DSP_RWCLEAR_RERR 1
 644
 645 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 646 {
 647         int state = saa_readb(SAA7135_DSP_RWSTATE);
 648         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 649                 audio_dbg(2, "%s: resetting error bit\n", dev->name);
 650                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 651         }
 652         return 0;
 653 }
 654
 655 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 656 {
 657         int state, count = DSP_RETRY;
 658
 659         state = saa_readb(SAA7135_DSP_RWSTATE);
 660         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 661                 pr_warn("%s: dsp access error\n", dev->name);
 662                 saa_dsp_reset_error_bit(dev);
 663                 return -EIO;
 664         }
 665         while (0 == (state & bit)) {
 666                 if (unlikely(0 == count)) {
 667                         pr_err("dsp access wait timeout [bit=%s]\n",
 668                                  (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 669                                  (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 670                                  (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 671                                  "???");
 672                         return -EIO;
 673                 }
 674                 saa_wait(DSP_DELAY);
 675                 state = saa_readb(SAA7135_DSP_RWSTATE);
 676                 count--;
 677         }
 678         return 0;
 679 }
 680
 681
 682 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 683 {
 684         int err;
 685
 686         audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n",
 687                   (reg << 2) & 0xffffffff, value);
 688         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 689         if (err < 0)
 690                 return err;
 691         saa_writel(reg,value);
 692         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 693         if (err < 0)
 694                 return err;
 695         return 0;
 696 }
 697
 698 static int getstereo_7133(struct saa7134_dev *dev)
 699 {
 700         int retval = V4L2_TUNER_SUB_MONO;
 701         u32 value;
 702
 703         value = saa_readl(0x528 >> 2);
 704         if (value & 0x20)
 705                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 706         if (value & 0x40)
 707                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 708         return retval;
 709 }
 710
 711 static int mute_input_7133(struct saa7134_dev *dev)
 712 {
 713         u32 reg = 0;
 714         u32 xbarin, xbarout;
 715         int mask;
 716         struct saa7134_input *in;
 717
 718         xbarin = 0x03;
 719         switch (dev->input->amux) {
 720         case TV:
 721                 reg = 0x02;
 722                 xbarin = 0;
 723                 break;
 724         case LINE1:
 725                 reg = 0x00;
 726                 break;
 727         case LINE2:
 728         case LINE2_LEFT:
 729                 reg = 0x09;
 730                 break;
 731         }
 732         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 733         if (dev->ctl_mute) {
 734                 reg = 0x07;
 735                 xbarout = 0xbbbbbb;
 736         } else
 737                 xbarout = 0xbbbb10;
 738         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 739
 740         saa_writel(0x594 >> 2, reg);
 741
 742
 743         /* switch gpio-connected external audio mux */
 744         if (0 != card(dev).gpiomask) {
 745                 mask = card(dev).gpiomask;
 746
 747                 if (card(dev).mute.type && dev->ctl_mute)
 748                         in = &card(dev).mute;
 749                 else
 750                         in = dev->input;
 751
 752                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 753                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 754                 saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 755         }
 756
 757         return 0;
 758 }
 759
 760 static int tvaudio_thread_ddep(void *data)
 761 {
 762         struct saa7134_dev *dev = data;
 763         u32 value, norms;
 764
 765         set_freezable();
 766         for (;;) {
 767                 tvaudio_sleep(dev,-1);
 768                 if (kthread_should_stop())
 769                         goto done;
 770         restart:
 771                 try_to_freeze();
 772
 773                 dev->thread.scan1 = dev->thread.scan2;
 774                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 775                           dev->thread.scan1);
 776
 777                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 778                         /* insmod option override */
 779                         norms = (audio_ddep << 2) | 0x01;
 780                         audio_dbg(1, "ddep override: %s\n",
 781                                   stdres[audio_ddep]);
 782                 } else if (&card(dev).radio == dev->input) {
 783                         audio_dbg(1, "FM Radio\n");
 784                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 785                                 norms = (0x11 << 2) | 0x01;
 786                                 /* set IF frequency to 5.5 MHz */
 787                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 788                         } else {
 789                                 norms = (0x0f << 2) | 0x01;
 790                         }
 791                 } else {
 792                         /* (let chip) scan for sound carrier */
 793                         norms = 0;
 794                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 795                                 norms |= 0x04;
 796                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 797                                 norms |= 0x20;
 798                         if (dev->tvnorm->id & V4L2_STD_DK)
 799                                 norms |= 0x08;
 800                         if (dev->tvnorm->id & V4L2_STD_MN)
 801                                 norms |= 0x40;
 802                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 803                                 norms |= 0x10;
 804                         if (0 == norms)
 805                                 norms = 0x7c; /* all */
 806                         audio_dbg(1, "scanning:%s%s%s%s%s\n",
 807                                   (norms & 0x04) ? " B/G"  : "",
 808                                   (norms & 0x08) ? " D/K"  : "",
 809                                   (norms & 0x10) ? " L/L'" : "",
 810                                   (norms & 0x20) ? " I"    : "",
 811                                   (norms & 0x40) ? " M"    : "");
 812                 }
 813
 814                 /* kick automatic standard detection */
 815                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 816                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 817
 818                 /* setup crossbars */
 819                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 820                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 821
 822                 if (tvaudio_sleep(dev,3000))
 823                         goto restart;
 824                 value = saa_readl(0x528 >> 2) & 0xffffff;
 825
 826                 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
 827                           value, stdres[value & 0x1f],
 828                           (value & 0x000020) ? ",stereo" : "",
 829                           (value & 0x000040) ? ",dual"   : "");
 830                 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 831                           (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 832                           (value & 0x000100) ? " A2/EIAJ dual "           : "",
 833                           (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 834                           (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 835
 836                           (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 837                           (value & 0x001000) ? " SAP carrier "            : "",
 838                           (value & 0x002000) ? " BTSC stereo noise mute " : "",
 839                           (value & 0x004000) ? " SAP noise mute "         : "",
 840                           (value & 0x008000) ? " VDSP "                   : "",
 841
 842                           (value & 0x010000) ? " NICST "                  : "",
 843                           (value & 0x020000) ? " NICDU "                  : "",
 844                           (value & 0x040000) ? " NICAM muted "            : "",
 845                           (value & 0x080000) ? " NICAM reserve sound "    : "",
 846
 847                           (value & 0x100000) ? " init done "              : "");
 848         }
 849
 850  done:
 851         dev->thread.stopped = 1;
 852         return 0;
 853 }
 854
 855 /* ------------------------------------------------------------------ */
 856 /* common stuff + external entry points                               */
 857
 858 void saa7134_enable_i2s(struct saa7134_dev *dev)
 859 {
 860         int i2s_format;
 861
 862         if (!card_is_empress(dev))
 863                 return;
 864
 865         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 866                 return;
 867
 868         /* configure GPIO for out */
 869         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 870
 871         switch (dev->pci->device) {
 872         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 873         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 874                 /* Set I2S format (SONY) */
 875                 saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 876                 /* Start I2S */
 877                 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 878                 break;
 879
 880         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 881                 i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 882
 883                 /* enable I2S audio output for the mpeg encoder */
 884                 saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 885                 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 886                 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 887                 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 888                 break;
 889
 890         default:
 891                 break;
 892         }
 893 }
 894
 895 int saa7134_tvaudio_rx2mode(u32 rx)
 896 {
 897         u32 mode;
 898
 899         mode = V4L2_TUNER_MODE_MONO;
 900         if (rx & V4L2_TUNER_SUB_STEREO)
 901                 mode = V4L2_TUNER_MODE_STEREO;
 902         else if (rx & V4L2_TUNER_SUB_LANG1)
 903                 mode = V4L2_TUNER_MODE_LANG1;
 904         else if (rx & V4L2_TUNER_SUB_LANG2)
 905                 mode = V4L2_TUNER_MODE_LANG2;
 906         return mode;
 907 }
 908
 909 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 910 {
 911         switch (dev->pci->device) {
 912         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 913         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 914                 mute_input_7134(dev);
 915                 break;
 916         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 917         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 918                 mute_input_7133(dev);
 919                 break;
 920         }
 921 }
 922
 923 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 924                               struct saa7134_input *in)
 925 {
 926         dev->input = in;
 927         switch (dev->pci->device) {
 928         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 929         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 930                 mute_input_7134(dev);
 931                 break;
 932         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 933         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 934                 mute_input_7133(dev);
 935                 break;
 936         }
 937         saa7134_enable_i2s(dev);
 938 }
 939
 940 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 941 {
 942         switch (dev->pci->device) {
 943         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 944                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 945                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 946                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 947                 break;
 948         }
 949 }
 950
 951 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 952 {
 953         int retval = V4L2_TUNER_SUB_MONO;
 954
 955         switch (dev->pci->device) {
 956         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 957                 if (dev->tvaudio)
 958                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 959                 break;
 960         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 961         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 962                 retval = getstereo_7133(dev);
 963                 break;
 964         }
 965         return retval;
 966 }
 967
 968 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 969 {
 970         int clock = saa7134_boards[dev->board].audio_clock;
 971
 972         if (UNSET != audio_clock_override)
 973                 clock = audio_clock_override;
 974
 975         switch (dev->pci->device) {
 976         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 977                 /* init all audio registers */
 978                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 979                 if (need_resched())
 980                         schedule();
 981                 else
 982                         udelay(10);
 983
 984                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 985                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 986                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 987                 /* frame locked audio is mandatory for NICAM */
 988                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 989                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 990                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 991                 break;
 992         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 993         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 994                 saa_writel(0x598 >> 2, clock);
 995                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 996                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 997         }
 998 }
 999
1000 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1001 {
1002         int (*my_thread)(void *data) = NULL;
1003
1004         switch (dev->pci->device) {
1005         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1006                 my_thread = tvaudio_thread;
1007                 break;
1008         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1009         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1010                 my_thread = tvaudio_thread_ddep;
1011                 break;
1012         }
1013
1014         dev->thread.thread = NULL;
1015         dev->thread.scan1 = dev->thread.scan2 = 0;
1016         if (my_thread) {
1017                 saa7134_tvaudio_init(dev);
1018                 /* start tvaudio thread */
1019                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1020                 if (IS_ERR(dev->thread.thread)) {
1021                         pr_warn("%s: kernel_thread() failed\n",
1022                                dev->name);
1023                         /* XXX: missing error handling here */
1024                 }
1025         }
1026
1027         saa7134_enable_i2s(dev);
1028         return 0;
1029 }
1030
1031 int saa7134_tvaudio_close(struct saa7134_dev *dev)
1032 {
1033         dev->automute = 1;
1034         /* anything else to undo? */
1035         return 0;
1036 }
1037
1038 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1039 {
1040         /* shutdown tvaudio thread */
1041         if (dev->thread.thread && !dev->thread.stopped)
1042                 kthread_stop(dev->thread.thread);
1043
1044         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1045         return 0;
1046 }
1047
1048 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1049 {
1050         if (dev->input->amux != TV) {
1051                 audio_dbg(1, "sound IF not in use, skipping scan\n");
1052                 dev->automute = 0;
1053                 saa7134_tvaudio_setmute(dev);
1054         } else if (dev->thread.thread) {
1055                 dev->thread.mode = UNSET;
1056                 dev->thread.scan2++;
1057
1058                 if (!dev->insuspend && !dev->thread.stopped)
1059                         wake_up_process(dev->thread.thread);
1060         } else {
1061                 dev->automute = 0;
1062                 saa7134_tvaudio_setmute(dev);
1063         }
1064         return 0;
1065 }
1066
1067 EXPORT_SYMBOL(saa_dsp_writel);
1068 EXPORT_SYMBOL(saa7134_tvaudio_setmute);