kernel/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  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include "saa7134.h"
  24 #include "saa7134-reg.h"
  25
  26 #include <linux/init.h>
  27 #include <linux/list.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/kthread.h>
  31 #include <linux/delay.h>
  32 #include <linux/freezer.h>
  33 #include <asm/div64.h>
  34
  35 /* ------------------------------------------------------------------ */
  36
  37 static unsigned int audio_debug;
  38 module_param(audio_debug, int, 0644);
  39 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  40
  41 static unsigned int audio_ddep;
  42 module_param(audio_ddep, int, 0644);
  43 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  44
  45 static int audio_clock_override = UNSET;
  46 module_param(audio_clock_override, int, 0644);
  47
  48 static int audio_clock_tweak;
  49 module_param(audio_clock_tweak, int, 0644);
  50 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  51
  52 #define audio_dbg(level, fmt, arg...) do { \
  53         if (audio_debug >= level) \
  54                 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
  55         } while (0)
  56
  57 /* msecs */
  58 #define SCAN_INITIAL_DELAY     1000
  59 #define SCAN_SAMPLE_DELAY       200
  60 #define SCAN_SUBCARRIER_DELAY  2000
  61
  62 /* ------------------------------------------------------------------ */
  63 /* saa7134 code                                                       */
  64
  65 static struct mainscan {
  66         char         *name;
  67         v4l2_std_id  std;
  68         int          carr;
  69 } mainscan[] = {
  70         {
  71                 .name = "MN",
  72                 .std  = V4L2_STD_MN,
  73                 .carr = 4500,
  74         },{
  75                 .name = "BGH",
  76                 .std  = V4L2_STD_B | V4L2_STD_GH,
  77                 .carr = 5500,
  78         },{
  79                 .name = "I",
  80                 .std  = V4L2_STD_PAL_I,
  81                 .carr = 6000,
  82         },{
  83                 .name = "DKL",
  84                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  85                 .carr = 6500,
  86         }
  87 };
  88
  89 static struct saa7134_tvaudio tvaudio[] = {
  90         {
  91                 .name          = "PAL-B/G FM-stereo",
  92                 .std           = V4L2_STD_PAL_BG,
  93                 .mode          = TVAUDIO_FM_BG_STEREO,
  94                 .carr1         = 5500,
  95                 .carr2         = 5742,
  96         },{
  97                 .name          = "PAL-D/K1 FM-stereo",
  98                 .std           = V4L2_STD_PAL_DK,
  99                 .carr1         = 6500,
 100                 .carr2         = 6258,
 101                 .mode          = TVAUDIO_FM_BG_STEREO,
 102         },{
 103                 .name          = "PAL-D/K2 FM-stereo",
 104                 .std           = V4L2_STD_PAL_DK,
 105                 .carr1         = 6500,
 106                 .carr2         = 6742,
 107                 .mode          = TVAUDIO_FM_BG_STEREO,
 108         },{
 109                 .name          = "PAL-D/K3 FM-stereo",
 110                 .std           = V4L2_STD_PAL_DK,
 111                 .carr1         = 6500,
 112                 .carr2         = 5742,
 113                 .mode          = TVAUDIO_FM_BG_STEREO,
 114         },{
 115                 .name          = "PAL-B/G NICAM",
 116                 .std           = V4L2_STD_PAL_BG,
 117                 .carr1         = 5500,
 118                 .carr2         = 5850,
 119                 .mode          = TVAUDIO_NICAM_FM,
 120         },{
 121                 .name          = "PAL-I NICAM",
 122                 .std           = V4L2_STD_PAL_I,
 123                 .carr1         = 6000,
 124                 .carr2         = 6552,
 125                 .mode          = TVAUDIO_NICAM_FM,
 126         },{
 127                 .name          = "PAL-D/K NICAM",
 128                 .std           = V4L2_STD_PAL_DK,
 129                 .carr1         = 6500,
 130                 .carr2         = 5850,
 131                 .mode          = TVAUDIO_NICAM_FM,
 132         },{
 133                 .name          = "SECAM-L NICAM",
 134                 .std           = V4L2_STD_SECAM_L,
 135                 .carr1         = 6500,
 136                 .carr2         = 5850,
 137                 .mode          = TVAUDIO_NICAM_AM,
 138         },{
 139                 .name          = "SECAM-D/K NICAM",
 140                 .std           = V4L2_STD_SECAM_DK,
 141                 .carr1         = 6500,
 142                 .carr2         = 5850,
 143                 .mode          = TVAUDIO_NICAM_FM,
 144         },{
 145                 .name          = "NTSC-A2 FM-stereo",
 146                 .std           = V4L2_STD_NTSC,
 147                 .carr1         = 4500,
 148                 .carr2         = 4724,
 149                 .mode          = TVAUDIO_FM_K_STEREO,
 150         },{
 151                 .name          = "NTSC-M",
 152                 .std           = V4L2_STD_NTSC,
 153                 .carr1         = 4500,
 154                 .carr2         = -1,
 155                 .mode          = TVAUDIO_FM_MONO,
 156         }
 157 };
 158 #define TVAUDIO ARRAY_SIZE(tvaudio)
 159
 160 /* ------------------------------------------------------------------ */
 161
 162 static u32 tvaudio_carr2reg(u32 carrier)
 163 {
 164         u64 a = carrier;
 165
 166         a <<= 24;
 167         do_div(a,12288);
 168         return a;
 169 }
 170
 171 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 172                                int primary, int secondary)
 173 {
 174         if (-1 == secondary)
 175                 secondary = primary;
 176         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 177         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 178 }
 179
 180 #define SAA7134_MUTE_MASK 0xbb
 181 #define SAA7134_MUTE_ANALOG 0x04
 182 #define SAA7134_MUTE_I2S 0x40
 183
 184 static void mute_input_7134(struct saa7134_dev *dev)
 185 {
 186         unsigned int mute;
 187         struct saa7134_input *in;
 188         int ausel=0, ics=0, ocs=0;
 189         int mask;
 190
 191         /* look what is to do ... */
 192         in   = dev->input;
 193         mute = (dev->ctl_mute ||
 194                 (dev->automute  &&  (&card(dev).radio) != in));
 195         if (card(dev).mute.name) {
 196                 /*
 197                  * 7130 - we'll mute using some unconnected audio input
 198                  * 7134 - we'll probably should switch external mux with gpio
 199                  */
 200                 if (mute)
 201                         in = &card(dev).mute;
 202         }
 203
 204         if (dev->hw_mute  == mute &&
 205                 dev->hw_input == in && !dev->insuspend) {
 206                 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
 207                           mute, in->name);
 208                 return;
 209         }
 210
 211         audio_dbg(1, "ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 212                   dev->ctl_mute, dev->automute,
 213                   dev->input->name, mute, in->name);
 214         dev->hw_mute  = mute;
 215         dev->hw_input = in;
 216
 217         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 218                 /* 7134 mute */
 219                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 220                                                     SAA7134_MUTE_MASK |
 221                                                     SAA7134_MUTE_ANALOG |
 222                                                     SAA7134_MUTE_I2S :
 223                                                     SAA7134_MUTE_MASK);
 224
 225         /* switch internal audio mux */
 226         switch (in->amux) {
 227         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 228         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 229         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 230         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 231         }
 232         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 233         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 234         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 235         // for oss, we need to change the clock configuration
 236         if (in->amux == TV)
 237                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 238         else
 239                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 240
 241         /* switch gpio-connected external audio mux */
 242         if (0 == card(dev).gpiomask)
 243                 return;
 244
 245         mask = card(dev).gpiomask;
 246         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 247         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 248         saa7134_track_gpio(dev,in->name);
 249 }
 250
 251 static void tvaudio_setmode(struct saa7134_dev *dev,
 252                             struct saa7134_tvaudio *audio,
 253                             char *note)
 254 {
 255         int acpf, tweak = 0;
 256
 257         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 258                 acpf = 0x19066;
 259         } else {
 260                 acpf = 0x1e000;
 261         }
 262         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 263                 tweak = audio_clock_tweak;
 264
 265         if (note)
 266                 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 267                         note, audio->name,
 268                         audio->carr1 / 1000, audio->carr1 % 1000,
 269                         audio->carr2 / 1000, audio->carr2 % 1000,
 270                         acpf, tweak);
 271
 272         acpf += tweak;
 273         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 274         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 275         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 276         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 277
 278         switch (audio->mode) {
 279         case TVAUDIO_FM_MONO:
 280         case TVAUDIO_FM_BG_STEREO:
 281                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 282                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 283                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 284                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 285                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 286                 break;
 287         case TVAUDIO_FM_K_STEREO:
 288                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 289                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 290                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 291                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 292                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 293                 break;
 294         case TVAUDIO_NICAM_FM:
 295                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 296                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 297                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 298                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 299                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 300                 break;
 301         case TVAUDIO_NICAM_AM:
 302                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 303                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 304                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 305                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 306                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 307                 break;
 308         case TVAUDIO_FM_SAT_STEREO:
 309                 /* not implemented (yet) */
 310                 break;
 311         }
 312 }
 313
 314 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 315 {
 316         if (dev->thread.scan1 == dev->thread.scan2 &&
 317             !kthread_should_stop()) {
 318                 if (timeout < 0) {
 319                         set_current_state(TASK_INTERRUPTIBLE);
 320                         schedule();
 321                 } else {
 322                         schedule_timeout_interruptible
 323                                                 (msecs_to_jiffies(timeout));
 324                 }
 325         }
 326         return dev->thread.scan1 != dev->thread.scan2;
 327 }
 328
 329 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 330 {
 331         __s32 left,right,value;
 332
 333         if (!(dev->tvnorm->id & scan->std)) {
 334                 value = 0;
 335                 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
 336                           scan->carr / 1000, scan->carr % 1000, scan->name);
 337                 return 0;
 338         }
 339
 340         if (audio_debug > 1) {
 341                 int i;
 342                 audio_dbg(1, "debug %d:", scan->carr);
 343                 for (i = -150; i <= 150; i += 30) {
 344                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 345                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 346                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 347                                 return -1;
 348                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 349                         if (0 == i)
 350                                 pr_cont("  #  %6d  # ", value >> 16);
 351                         else
 352                                 pr_cont(" %6d", value >> 16);
 353                 }
 354                 pr_cont("\n");
 355         }
 356
 357         tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 358         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 359         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 360                 return -1;
 361         left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 362
 363         tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 364         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 365         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 366                 return -1;
 367         right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 368
 369         left >>= 16;
 370         right >>= 16;
 371         value = left > right ? left - right : right - left;
 372         audio_dbg(1, "scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 373                   scan->carr / 1000, scan->carr % 1000,
 374                   scan->name, value, left, right);
 375         return value;
 376 }
 377
 378
 379 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 380 {
 381         __u32 idp, nicam, nicam_status;
 382         int retval = -1;
 383
 384         switch (audio->mode) {
 385         case TVAUDIO_FM_MONO:
 386                 return V4L2_TUNER_SUB_MONO;
 387         case TVAUDIO_FM_K_STEREO:
 388         case TVAUDIO_FM_BG_STEREO:
 389                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 390                 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
 391                 if (0x03 == (idp & 0x03))
 392                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 393                 else if (0x05 == (idp & 0x05))
 394                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 395                 else if (0x01 == (idp & 0x01))
 396                         retval = V4L2_TUNER_SUB_MONO;
 397                 break;
 398         case TVAUDIO_FM_SAT_STEREO:
 399                 /* not implemented (yet) */
 400                 break;
 401         case TVAUDIO_NICAM_FM:
 402         case TVAUDIO_NICAM_AM:
 403                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 404                 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
 405                 if (nicam & 0x1) {
 406                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 407                         audio_dbg(1, "getstereo: nicam_status=0x%x\n",
 408                                   nicam_status);
 409
 410                         switch (nicam_status & 0x03) {
 411                             case 0x01:
 412                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 413                                 break;
 414                             case 0x02:
 415                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 416                                 break;
 417                             default:
 418                                 retval = V4L2_TUNER_SUB_MONO;
 419                         }
 420                 } else {
 421                         /* No nicam detected */
 422                 }
 423                 break;
 424         }
 425         if (retval != -1)
 426                 audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
 427                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 428                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 429                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 430                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 431         return retval;
 432 }
 433
 434 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 435                              u32 mode)
 436 {
 437         static char *name[] = {
 438                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 439                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 440                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 441                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 442                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 443         };
 444         static u32 fm[] = {
 445                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 446                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 447                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 448                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 449                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 450         };
 451         u32 reg;
 452
 453         switch (audio->mode) {
 454         case TVAUDIO_FM_MONO:
 455                 /* nothing to do ... */
 456                 break;
 457         case TVAUDIO_FM_K_STEREO:
 458         case TVAUDIO_FM_BG_STEREO:
 459         case TVAUDIO_NICAM_AM:
 460         case TVAUDIO_NICAM_FM:
 461                 audio_dbg(1, "setstereo [fm] => %s\n",
 462                           name[mode % ARRAY_SIZE(name)]);
 463                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 464                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 465                 break;
 466         case TVAUDIO_FM_SAT_STEREO:
 467                 /* Not implemented */
 468                 break;
 469         }
 470         return 0;
 471 }
 472
 473 static int tvaudio_thread(void *data)
 474 {
 475         struct saa7134_dev *dev = data;
 476         int carr_vals[ARRAY_SIZE(mainscan)];
 477         unsigned int i, audio, nscan;
 478         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 479
 480         set_freezable();
 481
 482         for (;;) {
 483                 tvaudio_sleep(dev,-1);
 484                 if (kthread_should_stop())
 485                         goto done;
 486
 487         restart:
 488                 try_to_freeze();
 489
 490                 dev->thread.scan1 = dev->thread.scan2;
 491                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 492                           dev->thread.scan1);
 493                 dev->tvaudio  = NULL;
 494
 495                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 496                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 497
 498                 if (dev->ctl_automute)
 499                         dev->automute = 1;
 500
 501                 mute_input_7134(dev);
 502
 503                 /* give the tuner some time */
 504                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 505                         goto restart;
 506
 507                 max1 = 0;
 508                 max2 = 0;
 509                 nscan = 0;
 510                 carrier = 0;
 511                 default_carrier = 0;
 512                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 513                         if (!(dev->tvnorm->id & mainscan[i].std))
 514                                 continue;
 515                         if (!default_carrier)
 516                                 default_carrier = mainscan[i].carr;
 517                         nscan++;
 518                 }
 519
 520                 if (1 == nscan) {
 521                         /* only one candidate -- skip scan ;) */
 522                         audio_dbg(1, "only one main carrier candidate - skipping scan\n");
 523                         max1 = 12345;
 524                         carrier = default_carrier;
 525                 } else {
 526                         /* scan for the main carrier */
 527                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 528                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 529                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 530                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 531                                 if (dev->thread.scan1 != dev->thread.scan2)
 532                                         goto restart;
 533                         }
 534                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 535                                 if (max1 < carr_vals[i]) {
 536                                         max2 = max1;
 537                                         max1 = carr_vals[i];
 538                                         carrier = mainscan[i].carr;
 539                                 } else if (max2 < carr_vals[i]) {
 540                                         max2 = carr_vals[i];
 541                                 }
 542                         }
 543                 }
 544
 545                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 546                         /* found good carrier */
 547                         audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 548                                   dev->tvnorm->name, carrier/1000, carrier%1000,
 549                                   max1, max2);
 550                         dev->last_carrier = carrier;
 551                         dev->automute = 0;
 552
 553                 } else if (0 != dev->last_carrier) {
 554                         /* no carrier -- try last detected one as fallback */
 555                         carrier = dev->last_carrier;
 556                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
 557                                   carrier/1000, carrier%1000);
 558                         dev->automute = 1;
 559
 560                 } else {
 561                         /* no carrier + no fallback -- use default */
 562                         carrier = default_carrier;
 563                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
 564                                   carrier/1000, carrier%1000);
 565                         dev->automute = 1;
 566                 }
 567                 tvaudio_setcarrier(dev,carrier,carrier);
 568                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 569                 saa7134_tvaudio_setmute(dev);
 570                 /* find the exact tv audio norm */
 571                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 572                         if (dev->tvnorm->id != UNSET &&
 573                                 !(dev->tvnorm->id & tvaudio[i].std))
 574                                 continue;
 575                         if (tvaudio[i].carr1 != carrier)
 576                                 continue;
 577                         /* Note: at least the primary carrier is right here */
 578                         if (UNSET == audio)
 579                                 audio = i;
 580                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 581                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 582                                 goto restart;
 583                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 584                                 audio = i;
 585                                 break;
 586                         }
 587                 }
 588                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 589                 if (UNSET == audio)
 590                         continue;
 591                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 592
 593                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 594                 dev->tvaudio = &tvaudio[audio];
 595
 596                 lastmode = 42;
 597                 for (;;) {
 598
 599                         try_to_freeze();
 600
 601                         if (tvaudio_sleep(dev,5000))
 602                                 goto restart;
 603                         if (kthread_should_stop())
 604                                 break;
 605                         if (UNSET == dev->thread.mode) {
 606                                 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
 607                                 mode = saa7134_tvaudio_rx2mode(rx);
 608                         } else {
 609                                 mode = dev->thread.mode;
 610                         }
 611                         if (lastmode != mode) {
 612                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 613                                 lastmode = mode;
 614                         }
 615                 }
 616         }
 617
 618  done:
 619         dev->thread.stopped = 1;
 620         return 0;
 621 }
 622
 623 /* ------------------------------------------------------------------ */
 624 /* saa7133 / saa7135 code                                             */
 625
 626 static char *stdres[0x20] = {
 627         [0x00] = "no standard detected",
 628         [0x01] = "B/G (in progress)",
 629         [0x02] = "D/K (in progress)",
 630         [0x03] = "M (in progress)",
 631
 632         [0x04] = "B/G A2",
 633         [0x05] = "B/G NICAM",
 634         [0x06] = "D/K A2 (1)",
 635         [0x07] = "D/K A2 (2)",
 636         [0x08] = "D/K A2 (3)",
 637         [0x09] = "D/K NICAM",
 638         [0x0a] = "L NICAM",
 639         [0x0b] = "I NICAM",
 640
 641         [0x0c] = "M Korea",
 642         [0x0d] = "M BTSC ",
 643         [0x0e] = "M EIAJ",
 644
 645         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 646         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 647         [0x11] = "FM radio / IF sel / 50 deemp",
 648         [0x12] = "FM radio / IF sel / 75 deemp",
 649
 650         [0x13 ... 0x1e ] = "unknown",
 651         [0x1f] = "??? [in progress]",
 652 };
 653
 654 #define DSP_RETRY 32
 655 #define DSP_DELAY 16
 656 #define SAA7135_DSP_RWCLEAR_RERR 1
 657
 658 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 659 {
 660         int state = saa_readb(SAA7135_DSP_RWSTATE);
 661         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 662                 audio_dbg(2, "%s: resetting error bit\n", dev->name);
 663                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 664         }
 665         return 0;
 666 }
 667
 668 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 669 {
 670         int state, count = DSP_RETRY;
 671
 672         state = saa_readb(SAA7135_DSP_RWSTATE);
 673         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 674                 pr_warn("%s: dsp access error\n", dev->name);
 675                 saa_dsp_reset_error_bit(dev);
 676                 return -EIO;
 677         }
 678         while (0 == (state & bit)) {
 679                 if (unlikely(0 == count)) {
 680                         pr_err("dsp access wait timeout [bit=%s]\n",
 681                                  (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 682                                  (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 683                                  (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 684                                  "???");
 685                         return -EIO;
 686                 }
 687                 saa_wait(DSP_DELAY);
 688                 state = saa_readb(SAA7135_DSP_RWSTATE);
 689                 count--;
 690         }
 691         return 0;
 692 }
 693
 694
 695 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 696 {
 697         int err;
 698
 699         audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
 700         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 701         if (err < 0)
 702                 return err;
 703         saa_writel(reg,value);
 704         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 705         if (err < 0)
 706                 return err;
 707         return 0;
 708 }
 709
 710 static int getstereo_7133(struct saa7134_dev *dev)
 711 {
 712         int retval = V4L2_TUNER_SUB_MONO;
 713         u32 value;
 714
 715         value = saa_readl(0x528 >> 2);
 716         if (value & 0x20)
 717                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 718         if (value & 0x40)
 719                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 720         return retval;
 721 }
 722
 723 static int mute_input_7133(struct saa7134_dev *dev)
 724 {
 725         u32 reg = 0;
 726         u32 xbarin, xbarout;
 727         int mask;
 728         struct saa7134_input *in;
 729
 730         xbarin = 0x03;
 731         switch (dev->input->amux) {
 732         case TV:
 733                 reg = 0x02;
 734                 xbarin = 0;
 735                 break;
 736         case LINE1:
 737                 reg = 0x00;
 738                 break;
 739         case LINE2:
 740         case LINE2_LEFT:
 741                 reg = 0x09;
 742                 break;
 743         }
 744         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 745         if (dev->ctl_mute) {
 746                 reg = 0x07;
 747                 xbarout = 0xbbbbbb;
 748         } else
 749                 xbarout = 0xbbbb10;
 750         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 751
 752         saa_writel(0x594 >> 2, reg);
 753
 754
 755         /* switch gpio-connected external audio mux */
 756         if (0 != card(dev).gpiomask) {
 757                 mask = card(dev).gpiomask;
 758
 759                 if (card(dev).mute.name && dev->ctl_mute)
 760                         in = &card(dev).mute;
 761                 else
 762                         in = dev->input;
 763
 764                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 765                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 766                 saa7134_track_gpio(dev,in->name);
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int tvaudio_thread_ddep(void *data)
 773 {
 774         struct saa7134_dev *dev = data;
 775         u32 value, norms;
 776
 777         set_freezable();
 778         for (;;) {
 779                 tvaudio_sleep(dev,-1);
 780                 if (kthread_should_stop())
 781                         goto done;
 782         restart:
 783                 try_to_freeze();
 784
 785                 dev->thread.scan1 = dev->thread.scan2;
 786                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 787                           dev->thread.scan1);
 788
 789                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 790                         /* insmod option override */
 791                         norms = (audio_ddep << 2) | 0x01;
 792                         audio_dbg(1, "ddep override: %s\n",
 793                                   stdres[audio_ddep]);
 794                 } else if (&card(dev).radio == dev->input) {
 795                         audio_dbg(1, "FM Radio\n");
 796                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 797                                 norms = (0x11 << 2) | 0x01;
 798                                 /* set IF frequency to 5.5 MHz */
 799                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 800                         } else {
 801                                 norms = (0x0f << 2) | 0x01;
 802                         }
 803                 } else {
 804                         /* (let chip) scan for sound carrier */
 805                         norms = 0;
 806                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 807                                 norms |= 0x04;
 808                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 809                                 norms |= 0x20;
 810                         if (dev->tvnorm->id & V4L2_STD_DK)
 811                                 norms |= 0x08;
 812                         if (dev->tvnorm->id & V4L2_STD_MN)
 813                                 norms |= 0x40;
 814                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 815                                 norms |= 0x10;
 816                         if (0 == norms)
 817                                 norms = 0x7c; /* all */
 818                         audio_dbg(1, "scanning:%s%s%s%s%s\n",
 819                                   (norms & 0x04) ? " B/G"  : "",
 820                                   (norms & 0x08) ? " D/K"  : "",
 821                                   (norms & 0x10) ? " L/L'" : "",
 822                                   (norms & 0x20) ? " I"    : "",
 823                                   (norms & 0x40) ? " M"    : "");
 824                 }
 825
 826                 /* kick automatic standard detection */
 827                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 828                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 829
 830                 /* setup crossbars */
 831                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 832                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 833
 834                 if (tvaudio_sleep(dev,3000))
 835                         goto restart;
 836                 value = saa_readl(0x528 >> 2) & 0xffffff;
 837
 838                 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
 839                           value, stdres[value & 0x1f],
 840                           (value & 0x000020) ? ",stereo" : "",
 841                           (value & 0x000040) ? ",dual"   : "");
 842                 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 843                           (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 844                           (value & 0x000100) ? " A2/EIAJ dual "           : "",
 845                           (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 846                           (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 847
 848                           (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 849                           (value & 0x001000) ? " SAP carrier "            : "",
 850                           (value & 0x002000) ? " BTSC stereo noise mute " : "",
 851                           (value & 0x004000) ? " SAP noise mute "         : "",
 852                           (value & 0x008000) ? " VDSP "                   : "",
 853
 854                           (value & 0x010000) ? " NICST "                  : "",
 855                           (value & 0x020000) ? " NICDU "                  : "",
 856                           (value & 0x040000) ? " NICAM muted "            : "",
 857                           (value & 0x080000) ? " NICAM reserve sound "    : "",
 858
 859                           (value & 0x100000) ? " init done "              : "");
 860         }
 861
 862  done:
 863         dev->thread.stopped = 1;
 864         return 0;
 865 }
 866
 867 /* ------------------------------------------------------------------ */
 868 /* common stuff + external entry points                               */
 869
 870 void saa7134_enable_i2s(struct saa7134_dev *dev)
 871 {
 872         int i2s_format;
 873
 874         if (!card_is_empress(dev))
 875                 return;
 876
 877         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 878                 return;
 879
 880         /* configure GPIO for out */
 881         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 882
 883         switch (dev->pci->device) {
 884         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 885         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 886             /* Set I2S format (SONY)  */
 887             saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 888             /* Start I2S */
 889             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 890             break;
 891
 892         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 893             i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 894
 895             /* enable I2S audio output for the mpeg encoder */
 896             saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 897             saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 898             saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 899             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 900
 901         default:
 902             break;
 903         }
 904 }
 905
 906 int saa7134_tvaudio_rx2mode(u32 rx)
 907 {
 908         u32 mode;
 909
 910         mode = V4L2_TUNER_MODE_MONO;
 911         if (rx & V4L2_TUNER_SUB_STEREO)
 912                 mode = V4L2_TUNER_MODE_STEREO;
 913         else if (rx & V4L2_TUNER_SUB_LANG1)
 914                 mode = V4L2_TUNER_MODE_LANG1;
 915         else if (rx & V4L2_TUNER_SUB_LANG2)
 916                 mode = V4L2_TUNER_MODE_LANG2;
 917         return mode;
 918 }
 919
 920 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 921 {
 922         switch (dev->pci->device) {
 923         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 924         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 925                 mute_input_7134(dev);
 926                 break;
 927         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 928         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 929                 mute_input_7133(dev);
 930                 break;
 931         }
 932 }
 933
 934 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 935                               struct saa7134_input *in)
 936 {
 937         dev->input = in;
 938         switch (dev->pci->device) {
 939         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 940         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 941                 mute_input_7134(dev);
 942                 break;
 943         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 944         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 945                 mute_input_7133(dev);
 946                 break;
 947         }
 948         saa7134_enable_i2s(dev);
 949 }
 950
 951 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 952 {
 953         switch (dev->pci->device) {
 954         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 955                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 956                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 957                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 958                 break;
 959         }
 960 }
 961
 962 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 963 {
 964         int retval = V4L2_TUNER_SUB_MONO;
 965
 966         switch (dev->pci->device) {
 967         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 968                 if (dev->tvaudio)
 969                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 970                 break;
 971         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 972         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 973                 retval = getstereo_7133(dev);
 974                 break;
 975         }
 976         return retval;
 977 }
 978
 979 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 980 {
 981         int clock = saa7134_boards[dev->board].audio_clock;
 982
 983         if (UNSET != audio_clock_override)
 984                 clock = audio_clock_override;
 985
 986         switch (dev->pci->device) {
 987         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 988                 /* init all audio registers */
 989                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 990                 if (need_resched())
 991                         schedule();
 992                 else
 993                         udelay(10);
 994
 995                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 996                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 997                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 998                 /* frame locked audio is mandatory for NICAM */
 999                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
1000                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
1001                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1002                 break;
1003         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1004         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1005                 saa_writel(0x598 >> 2, clock);
1006                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1007                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1008         }
1009 }
1010
1011 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1012 {
1013         int (*my_thread)(void *data) = NULL;
1014
1015         switch (dev->pci->device) {
1016         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1017                 my_thread = tvaudio_thread;
1018                 break;
1019         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1020         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1021                 my_thread = tvaudio_thread_ddep;
1022                 break;
1023         }
1024
1025         dev->thread.thread = NULL;
1026         dev->thread.scan1 = dev->thread.scan2 = 0;
1027         if (my_thread) {
1028                 saa7134_tvaudio_init(dev);
1029                 /* start tvaudio thread */
1030                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1031                 if (IS_ERR(dev->thread.thread)) {
1032                         pr_warn("%s: kernel_thread() failed\n",
1033                                dev->name);
1034                         /* XXX: missing error handling here */
1035                 }
1036         }
1037
1038         saa7134_enable_i2s(dev);
1039         return 0;
1040 }
1041
1042 int saa7134_tvaudio_close(struct saa7134_dev *dev)
1043 {
1044         dev->automute = 1;
1045         /* anything else to undo? */
1046         return 0;
1047 }
1048
1049 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1050 {
1051         /* shutdown tvaudio thread */
1052         if (dev->thread.thread && !dev->thread.stopped)
1053                 kthread_stop(dev->thread.thread);
1054
1055         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1056         return 0;
1057 }
1058
1059 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1060 {
1061         if (dev->input->amux != TV) {
1062                 audio_dbg(1, "sound IF not in use, skipping scan\n");
1063                 dev->automute = 0;
1064                 saa7134_tvaudio_setmute(dev);
1065         } else if (dev->thread.thread) {
1066                 dev->thread.mode = UNSET;
1067                 dev->thread.scan2++;
1068
1069                 if (!dev->insuspend && !dev->thread.stopped)
1070                         wake_up_process(dev->thread.thread);
1071         } else {
1072                 dev->automute = 0;
1073                 saa7134_tvaudio_setmute(dev);
1074         }
1075         return 0;
1076 }
1077
1078 EXPORT_SYMBOL(saa_dsp_writel);
1079 EXPORT_SYMBOL(saa7134_tvaudio_setmute);