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 <linux/init.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/kthread.h>
  28 #include <linux/delay.h>
  29 #include <linux/freezer.h>
  30 #include <asm/div64.h>
  31
  32 #include "saa7134-reg.h"
  33 #include "saa7134.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 dprintk(fmt, arg...)    if (audio_debug) \
  53         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  54 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  55         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  56
  57 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  58                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  59
  60 /* msecs */
  61 #define SCAN_INITIAL_DELAY     1000
  62 #define SCAN_SAMPLE_DELAY       200
  63 #define SCAN_SUBCARRIER_DELAY  2000
  64
  65 /* ------------------------------------------------------------------ */
  66 /* saa7134 code                                                       */
  67
  68 static struct mainscan {
  69         char         *name;
  70         v4l2_std_id  std;
  71         int          carr;
  72 } mainscan[] = {
  73         {
  74                 .name = "MN",
  75                 .std  = V4L2_STD_MN,
  76                 .carr = 4500,
  77         },{
  78                 .name = "BGH",
  79                 .std  = V4L2_STD_B | V4L2_STD_GH,
  80                 .carr = 5500,
  81         },{
  82                 .name = "I",
  83                 .std  = V4L2_STD_PAL_I,
  84                 .carr = 6000,
  85         },{
  86                 .name = "DKL",
  87                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  88                 .carr = 6500,
  89         }
  90 };
  91
  92 static struct saa7134_tvaudio tvaudio[] = {
  93         {
  94                 .name          = "PAL-B/G FM-stereo",
  95                 .std           = V4L2_STD_PAL_BG,
  96                 .mode          = TVAUDIO_FM_BG_STEREO,
  97                 .carr1         = 5500,
  98                 .carr2         = 5742,
  99         },{
 100                 .name          = "PAL-D/K1 FM-stereo",
 101                 .std           = V4L2_STD_PAL_DK,
 102                 .carr1         = 6500,
 103                 .carr2         = 6258,
 104                 .mode          = TVAUDIO_FM_BG_STEREO,
 105         },{
 106                 .name          = "PAL-D/K2 FM-stereo",
 107                 .std           = V4L2_STD_PAL_DK,
 108                 .carr1         = 6500,
 109                 .carr2         = 6742,
 110                 .mode          = TVAUDIO_FM_BG_STEREO,
 111         },{
 112                 .name          = "PAL-D/K3 FM-stereo",
 113                 .std           = V4L2_STD_PAL_DK,
 114                 .carr1         = 6500,
 115                 .carr2         = 5742,
 116                 .mode          = TVAUDIO_FM_BG_STEREO,
 117         },{
 118                 .name          = "PAL-B/G NICAM",
 119                 .std           = V4L2_STD_PAL_BG,
 120                 .carr1         = 5500,
 121                 .carr2         = 5850,
 122                 .mode          = TVAUDIO_NICAM_FM,
 123         },{
 124                 .name          = "PAL-I NICAM",
 125                 .std           = V4L2_STD_PAL_I,
 126                 .carr1         = 6000,
 127                 .carr2         = 6552,
 128                 .mode          = TVAUDIO_NICAM_FM,
 129         },{
 130                 .name          = "PAL-D/K NICAM",
 131                 .std           = V4L2_STD_PAL_DK,
 132                 .carr1         = 6500,
 133                 .carr2         = 5850,
 134                 .mode          = TVAUDIO_NICAM_FM,
 135         },{
 136                 .name          = "SECAM-L NICAM",
 137                 .std           = V4L2_STD_SECAM_L,
 138                 .carr1         = 6500,
 139                 .carr2         = 5850,
 140                 .mode          = TVAUDIO_NICAM_AM,
 141         },{
 142                 .name          = "SECAM-D/K NICAM",
 143                 .std           = V4L2_STD_SECAM_DK,
 144                 .carr1         = 6500,
 145                 .carr2         = 5850,
 146                 .mode          = TVAUDIO_NICAM_FM,
 147         },{
 148                 .name          = "NTSC-A2 FM-stereo",
 149                 .std           = V4L2_STD_NTSC,
 150                 .carr1         = 4500,
 151                 .carr2         = 4724,
 152                 .mode          = TVAUDIO_FM_K_STEREO,
 153         },{
 154                 .name          = "NTSC-M",
 155                 .std           = V4L2_STD_NTSC,
 156                 .carr1         = 4500,
 157                 .carr2         = -1,
 158                 .mode          = TVAUDIO_FM_MONO,
 159         }
 160 };
 161 #define TVAUDIO ARRAY_SIZE(tvaudio)
 162
 163 /* ------------------------------------------------------------------ */
 164
 165 static u32 tvaudio_carr2reg(u32 carrier)
 166 {
 167         u64 a = carrier;
 168
 169         a <<= 24;
 170         do_div(a,12288);
 171         return a;
 172 }
 173
 174 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 175                                int primary, int secondary)
 176 {
 177         if (-1 == secondary)
 178                 secondary = primary;
 179         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 180         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 181 }
 182
 183 #define SAA7134_MUTE_MASK 0xbb
 184 #define SAA7134_MUTE_ANALOG 0x04
 185 #define SAA7134_MUTE_I2S 0x40
 186
 187 static void mute_input_7134(struct saa7134_dev *dev)
 188 {
 189         unsigned int mute;
 190         struct saa7134_input *in;
 191         int ausel=0, ics=0, ocs=0;
 192         int mask;
 193
 194         /* look what is to do ... */
 195         in   = dev->input;
 196         mute = (dev->ctl_mute ||
 197                 (dev->automute  &&  (&card(dev).radio) != in));
 198         if (card(dev).mute.name) {
 199                 /*
 200                  * 7130 - we'll mute using some unconnected audio input
 201                  * 7134 - we'll probably should switch external mux with gpio
 202                  */
 203                 if (mute)
 204                         in = &card(dev).mute;
 205         }
 206
 207         if (dev->hw_mute  == mute &&
 208                 dev->hw_input == in && !dev->insuspend) {
 209                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 210                         mute,in->name);
 211                 return;
 212         }
 213
 214         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 215                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 216         dev->hw_mute  = mute;
 217         dev->hw_input = in;
 218
 219         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 220                 /* 7134 mute */
 221                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 222                                                     SAA7134_MUTE_MASK |
 223                                                     SAA7134_MUTE_ANALOG |
 224                                                     SAA7134_MUTE_I2S :
 225                                                     SAA7134_MUTE_MASK);
 226
 227         /* switch internal audio mux */
 228         switch (in->amux) {
 229         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 230         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 231         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 232         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 233         }
 234         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 235         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 236         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 237         // for oss, we need to change the clock configuration
 238         if (in->amux == TV)
 239                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 240         else
 241                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 242
 243         /* switch gpio-connected external audio mux */
 244         if (0 == card(dev).gpiomask)
 245                 return;
 246
 247         mask = card(dev).gpiomask;
 248         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 249         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 250         saa7134_track_gpio(dev,in->name);
 251 }
 252
 253 static void tvaudio_setmode(struct saa7134_dev *dev,
 254                             struct saa7134_tvaudio *audio,
 255                             char *note)
 256 {
 257         int acpf, tweak = 0;
 258
 259         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 260                 acpf = 0x19066;
 261         } else {
 262                 acpf = 0x1e000;
 263         }
 264         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 265                 tweak = audio_clock_tweak;
 266
 267         if (note)
 268                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 269                         note,audio->name,
 270                         audio->carr1 / 1000, audio->carr1 % 1000,
 271                         audio->carr2 / 1000, audio->carr2 % 1000,
 272                         acpf, tweak);
 273
 274         acpf += tweak;
 275         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 276         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 277         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 278         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 279
 280         switch (audio->mode) {
 281         case TVAUDIO_FM_MONO:
 282         case TVAUDIO_FM_BG_STEREO:
 283                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 284                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 285                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 286                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 287                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 288                 break;
 289         case TVAUDIO_FM_K_STEREO:
 290                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 291                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 292                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 293                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 294                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 295                 break;
 296         case TVAUDIO_NICAM_FM:
 297                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 298                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 299                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 300                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 301                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 302                 break;
 303         case TVAUDIO_NICAM_AM:
 304                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 305                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 306                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 307                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 308                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 309                 break;
 310         case TVAUDIO_FM_SAT_STEREO:
 311                 /* not implemented (yet) */
 312                 break;
 313         }
 314 }
 315
 316 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 317 {
 318         if (dev->thread.scan1 == dev->thread.scan2 &&
 319             !kthread_should_stop()) {
 320                 if (timeout < 0) {
 321                         set_current_state(TASK_INTERRUPTIBLE);
 322                         schedule();
 323                 } else {
 324                         schedule_timeout_interruptible
 325                                                 (msecs_to_jiffies(timeout));
 326                 }
 327         }
 328         return dev->thread.scan1 != dev->thread.scan2;
 329 }
 330
 331 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 332 {
 333         __s32 left,right,value;
 334
 335         if (!(dev->tvnorm->id & scan->std)) {
 336                 value = 0;
 337                 dprintk("skipping %d.%03d MHz [%4s]\n",
 338                         scan->carr / 1000, scan->carr % 1000, scan->name);
 339                 return 0;
 340         }
 341
 342         if (audio_debug > 1) {
 343                 int i;
 344                 dprintk("debug %d:",scan->carr);
 345                 for (i = -150; i <= 150; i += 30) {
 346                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 347                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 348                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 349                                 return -1;
 350                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 351                         if (0 == i)
 352                                 printk("  #  %6d  # ",value >> 16);
 353                         else
 354                                 printk(" %6d",value >> 16);
 355                 }
 356                 printk("\n");
 357         }
 358
 359         tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 360         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 361         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 362                 return -1;
 363         left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 364
 365         tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 366         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 367         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 368                 return -1;
 369         right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 370
 371         left >>= 16;
 372         right >>= 16;
 373         value = left > right ? left - right : right - left;
 374         dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 375                 scan->carr / 1000, scan->carr % 1000,
 376                 scan->name, value, left, right);
 377         return value;
 378 }
 379
 380
 381 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 382 {
 383         __u32 idp, nicam, nicam_status;
 384         int retval = -1;
 385
 386         switch (audio->mode) {
 387         case TVAUDIO_FM_MONO:
 388                 return V4L2_TUNER_SUB_MONO;
 389         case TVAUDIO_FM_K_STEREO:
 390         case TVAUDIO_FM_BG_STEREO:
 391                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 392                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 393                 if (0x03 == (idp & 0x03))
 394                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 395                 else if (0x05 == (idp & 0x05))
 396                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 397                 else if (0x01 == (idp & 0x01))
 398                         retval = V4L2_TUNER_SUB_MONO;
 399                 break;
 400         case TVAUDIO_FM_SAT_STEREO:
 401                 /* not implemented (yet) */
 402                 break;
 403         case TVAUDIO_NICAM_FM:
 404         case TVAUDIO_NICAM_AM:
 405                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 406                 dprintk("getstereo: nicam=0x%x\n",nicam);
 407                 if (nicam & 0x1) {
 408                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 409                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 410
 411                         switch (nicam_status & 0x03) {
 412                             case 0x01:
 413                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 414                                 break;
 415                             case 0x02:
 416                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 417                                 break;
 418                             default:
 419                                 retval = V4L2_TUNER_SUB_MONO;
 420                         }
 421                 } else {
 422                         /* No nicam detected */
 423                 }
 424                 break;
 425         }
 426         if (retval != -1)
 427                 dprintk("found audio subchannels:%s%s%s%s\n",
 428                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 429                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 430                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 431                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 432         return retval;
 433 }
 434
 435 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 436                              u32 mode)
 437 {
 438         static char *name[] = {
 439                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 440                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 441                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 442                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 443                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 444         };
 445         static u32 fm[] = {
 446                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 447                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 448                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 449                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 450                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 451         };
 452         u32 reg;
 453
 454         switch (audio->mode) {
 455         case TVAUDIO_FM_MONO:
 456                 /* nothing to do ... */
 457                 break;
 458         case TVAUDIO_FM_K_STEREO:
 459         case TVAUDIO_FM_BG_STEREO:
 460         case TVAUDIO_NICAM_AM:
 461         case TVAUDIO_NICAM_FM:
 462                 dprintk("setstereo [fm] => %s\n",
 463                         name[ mode % ARRAY_SIZE(name) ]);
 464                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 465                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 466                 break;
 467         case TVAUDIO_FM_SAT_STEREO:
 468                 /* Not implemented */
 469                 break;
 470         }
 471         return 0;
 472 }
 473
 474 static int tvaudio_thread(void *data)
 475 {
 476         struct saa7134_dev *dev = data;
 477         int carr_vals[ARRAY_SIZE(mainscan)];
 478         unsigned int i, audio, nscan;
 479         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 480
 481         set_freezable();
 482
 483         for (;;) {
 484                 tvaudio_sleep(dev,-1);
 485                 if (kthread_should_stop())
 486                         goto done;
 487
 488         restart:
 489                 try_to_freeze();
 490
 491                 dev->thread.scan1 = dev->thread.scan2;
 492                 dprintk("tvaudio thread scan start [%d]\n",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                         dprintk("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                         dprintk("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                         dprintk("audio carrier scan failed, "
 557                                 "using %d.%03d MHz [last detected]\n",
 558                                 carrier/1000, carrier%1000);
 559                         dev->automute = 1;
 560
 561                 } else {
 562                         /* no carrier + no fallback -- use default */
 563                         carrier = default_carrier;
 564                         dprintk("audio carrier scan failed, "
 565                                 "using %d.%03d MHz [default]\n",
 566                                 carrier/1000, carrier%1000);
 567                         dev->automute = 1;
 568                 }
 569                 tvaudio_setcarrier(dev,carrier,carrier);
 570                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 571                 saa7134_tvaudio_setmute(dev);
 572                 /* find the exact tv audio norm */
 573                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 574                         if (dev->tvnorm->id != UNSET &&
 575                                 !(dev->tvnorm->id & tvaudio[i].std))
 576                                 continue;
 577                         if (tvaudio[i].carr1 != carrier)
 578                                 continue;
 579                         /* Note: at least the primary carrier is right here */
 580                         if (UNSET == audio)
 581                                 audio = i;
 582                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 583                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 584                                 goto restart;
 585                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 586                                 audio = i;
 587                                 break;
 588                         }
 589                 }
 590                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 591                 if (UNSET == audio)
 592                         continue;
 593                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 594
 595                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 596                 dev->tvaudio = &tvaudio[audio];
 597
 598                 lastmode = 42;
 599                 for (;;) {
 600
 601                         try_to_freeze();
 602
 603                         if (tvaudio_sleep(dev,5000))
 604                                 goto restart;
 605                         if (kthread_should_stop())
 606                                 break;
 607                         if (UNSET == dev->thread.mode) {
 608                                 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
 609                                 mode = saa7134_tvaudio_rx2mode(rx);
 610                         } else {
 611                                 mode = dev->thread.mode;
 612                         }
 613                         if (lastmode != mode) {
 614                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 615                                 lastmode = mode;
 616                         }
 617                 }
 618         }
 619
 620  done:
 621         dev->thread.stopped = 1;
 622         return 0;
 623 }
 624
 625 /* ------------------------------------------------------------------ */
 626 /* saa7133 / saa7135 code                                             */
 627
 628 static char *stdres[0x20] = {
 629         [0x00] = "no standard detected",
 630         [0x01] = "B/G (in progress)",
 631         [0x02] = "D/K (in progress)",
 632         [0x03] = "M (in progress)",
 633
 634         [0x04] = "B/G A2",
 635         [0x05] = "B/G NICAM",
 636         [0x06] = "D/K A2 (1)",
 637         [0x07] = "D/K A2 (2)",
 638         [0x08] = "D/K A2 (3)",
 639         [0x09] = "D/K NICAM",
 640         [0x0a] = "L NICAM",
 641         [0x0b] = "I NICAM",
 642
 643         [0x0c] = "M Korea",
 644         [0x0d] = "M BTSC ",
 645         [0x0e] = "M EIAJ",
 646
 647         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 648         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 649         [0x11] = "FM radio / IF sel / 50 deemp",
 650         [0x12] = "FM radio / IF sel / 75 deemp",
 651
 652         [0x13 ... 0x1e ] = "unknown",
 653         [0x1f] = "??? [in progress]",
 654 };
 655
 656 #define DSP_RETRY 32
 657 #define DSP_DELAY 16
 658 #define SAA7135_DSP_RWCLEAR_RERR 1
 659
 660 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 661 {
 662         int state = saa_readb(SAA7135_DSP_RWSTATE);
 663         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 664                 d2printk("%s: resetting error bit\n", dev->name);
 665                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 666         }
 667         return 0;
 668 }
 669
 670 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 671 {
 672         int state, count = DSP_RETRY;
 673
 674         state = saa_readb(SAA7135_DSP_RWSTATE);
 675         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 676                 printk(KERN_WARNING "%s: dsp access error\n", dev->name);
 677                 saa_dsp_reset_error_bit(dev);
 678                 return -EIO;
 679         }
 680         while (0 == (state & bit)) {
 681                 if (unlikely(0 == count)) {
 682                         printk("%s: dsp access wait timeout [bit=%s]\n",
 683                                dev->name,
 684                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 685                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 686                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 687                                "???");
 688                         return -EIO;
 689                 }
 690                 saa_wait(DSP_DELAY);
 691                 state = saa_readb(SAA7135_DSP_RWSTATE);
 692                 count--;
 693         }
 694         return 0;
 695 }
 696
 697
 698 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 699 {
 700         int err;
 701
 702         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 703         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 704         if (err < 0)
 705                 return err;
 706         saa_writel(reg,value);
 707         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 708         if (err < 0)
 709                 return err;
 710         return 0;
 711 }
 712
 713 static int getstereo_7133(struct saa7134_dev *dev)
 714 {
 715         int retval = V4L2_TUNER_SUB_MONO;
 716         u32 value;
 717
 718         value = saa_readl(0x528 >> 2);
 719         if (value & 0x20)
 720                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 721         if (value & 0x40)
 722                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 723         return retval;
 724 }
 725
 726 static int mute_input_7133(struct saa7134_dev *dev)
 727 {
 728         u32 reg = 0;
 729         u32 xbarin, xbarout;
 730         int mask;
 731         struct saa7134_input *in;
 732
 733         xbarin = 0x03;
 734         switch (dev->input->amux) {
 735         case TV:
 736                 reg = 0x02;
 737                 xbarin = 0;
 738                 break;
 739         case LINE1:
 740                 reg = 0x00;
 741                 break;
 742         case LINE2:
 743         case LINE2_LEFT:
 744                 reg = 0x09;
 745                 break;
 746         }
 747         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 748         if (dev->ctl_mute) {
 749                 reg = 0x07;
 750                 xbarout = 0xbbbbbb;
 751         } else
 752                 xbarout = 0xbbbb10;
 753         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 754
 755         saa_writel(0x594 >> 2, reg);
 756
 757
 758         /* switch gpio-connected external audio mux */
 759         if (0 != card(dev).gpiomask) {
 760                 mask = card(dev).gpiomask;
 761
 762                 if (card(dev).mute.name && dev->ctl_mute)
 763                         in = &card(dev).mute;
 764                 else
 765                         in = dev->input;
 766
 767                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 768                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 769                 saa7134_track_gpio(dev,in->name);
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int tvaudio_thread_ddep(void *data)
 776 {
 777         struct saa7134_dev *dev = data;
 778         u32 value, norms;
 779
 780         set_freezable();
 781         for (;;) {
 782                 tvaudio_sleep(dev,-1);
 783                 if (kthread_should_stop())
 784                         goto done;
 785         restart:
 786                 try_to_freeze();
 787
 788                 dev->thread.scan1 = dev->thread.scan2;
 789                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 790
 791                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 792                         /* insmod option override */
 793                         norms = (audio_ddep << 2) | 0x01;
 794                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 795                 } else if (&card(dev).radio == dev->input) {
 796                         dprintk("FM Radio\n");
 797                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 798                                 norms = (0x11 << 2) | 0x01;
 799                                 /* set IF frequency to 5.5 MHz */
 800                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 801                         } else {
 802                                 norms = (0x0f << 2) | 0x01;
 803                         }
 804                 } else {
 805                         /* (let chip) scan for sound carrier */
 806                         norms = 0;
 807                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 808                                 norms |= 0x04;
 809                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 810                                 norms |= 0x20;
 811                         if (dev->tvnorm->id & V4L2_STD_DK)
 812                                 norms |= 0x08;
 813                         if (dev->tvnorm->id & V4L2_STD_MN)
 814                                 norms |= 0x40;
 815                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 816                                 norms |= 0x10;
 817                         if (0 == norms)
 818                                 norms = 0x7c; /* all */
 819                         dprintk("scanning:%s%s%s%s%s\n",
 820                                 (norms & 0x04) ? " B/G"  : "",
 821                                 (norms & 0x08) ? " D/K"  : "",
 822                                 (norms & 0x10) ? " L/L'" : "",
 823                                 (norms & 0x20) ? " I"    : "",
 824                                 (norms & 0x40) ? " M"    : "");
 825                 }
 826
 827                 /* kick automatic standard detection */
 828                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 829                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 830
 831                 /* setup crossbars */
 832                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 833                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 834
 835                 if (tvaudio_sleep(dev,3000))
 836                         goto restart;
 837                 value = saa_readl(0x528 >> 2) & 0xffffff;
 838
 839                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 840                         value, stdres[value & 0x1f],
 841                         (value & 0x000020) ? ",stereo" : "",
 842                         (value & 0x000040) ? ",dual"   : "");
 843                 dprintk("detailed status: "
 844                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 845                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 846                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 847                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 848                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 849
 850                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 851                         (value & 0x001000) ? " SAP carrier "            : "",
 852                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 853                         (value & 0x004000) ? " SAP noise mute "         : "",
 854                         (value & 0x008000) ? " VDSP "                   : "",
 855
 856                         (value & 0x010000) ? " NICST "                  : "",
 857                         (value & 0x020000) ? " NICDU "                  : "",
 858                         (value & 0x040000) ? " NICAM muted "            : "",
 859                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 860
 861                         (value & 0x100000) ? " init done "              : "");
 862         }
 863
 864  done:
 865         dev->thread.stopped = 1;
 866         return 0;
 867 }
 868
 869 /* ------------------------------------------------------------------ */
 870 /* common stuff + external entry points                               */
 871
 872 void saa7134_enable_i2s(struct saa7134_dev *dev)
 873 {
 874         int i2s_format;
 875
 876         if (!card_is_empress(dev))
 877                 return;
 878
 879         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 880                 return;
 881
 882         /* configure GPIO for out */
 883         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 884
 885         switch (dev->pci->device) {
 886         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 887         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 888             /* Set I2S format (SONY)  */
 889             saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 890             /* Start I2S */
 891             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 892             break;
 893
 894         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 895             i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 896
 897             /* enable I2S audio output for the mpeg encoder */
 898             saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 899             saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 900             saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 901             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 902
 903         default:
 904             break;
 905         }
 906 }
 907
 908 int saa7134_tvaudio_rx2mode(u32 rx)
 909 {
 910         u32 mode;
 911
 912         mode = V4L2_TUNER_MODE_MONO;
 913         if (rx & V4L2_TUNER_SUB_STEREO)
 914                 mode = V4L2_TUNER_MODE_STEREO;
 915         else if (rx & V4L2_TUNER_SUB_LANG1)
 916                 mode = V4L2_TUNER_MODE_LANG1;
 917         else if (rx & V4L2_TUNER_SUB_LANG2)
 918                 mode = V4L2_TUNER_MODE_LANG2;
 919         return mode;
 920 }
 921
 922 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 923 {
 924         switch (dev->pci->device) {
 925         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 926         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 927                 mute_input_7134(dev);
 928                 break;
 929         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 930         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 931                 mute_input_7133(dev);
 932                 break;
 933         }
 934 }
 935
 936 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 937                               struct saa7134_input *in)
 938 {
 939         dev->input = in;
 940         switch (dev->pci->device) {
 941         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 942         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 943                 mute_input_7134(dev);
 944                 break;
 945         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 946         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 947                 mute_input_7133(dev);
 948                 break;
 949         }
 950         saa7134_enable_i2s(dev);
 951 }
 952
 953 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 954 {
 955         switch (dev->pci->device) {
 956         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 957                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 958                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 959                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 960                 break;
 961         }
 962 }
 963
 964 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 965 {
 966         int retval = V4L2_TUNER_SUB_MONO;
 967
 968         switch (dev->pci->device) {
 969         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 970                 if (dev->tvaudio)
 971                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 972                 break;
 973         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 974         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 975                 retval = getstereo_7133(dev);
 976                 break;
 977         }
 978         return retval;
 979 }
 980
 981 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 982 {
 983         int clock = saa7134_boards[dev->board].audio_clock;
 984
 985         if (UNSET != audio_clock_override)
 986                 clock = audio_clock_override;
 987
 988         switch (dev->pci->device) {
 989         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 990                 /* init all audio registers */
 991                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 992                 if (need_resched())
 993                         schedule();
 994                 else
 995                         udelay(10);
 996
 997                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 998                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 999                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
1000                 /* frame locked audio is mandatory for NICAM */
1001                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
1002                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
1003                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1004                 break;
1005         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1006         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1007                 saa_writel(0x598 >> 2, clock);
1008                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1009                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1010         }
1011 }
1012
1013 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1014 {
1015         int (*my_thread)(void *data) = NULL;
1016
1017         switch (dev->pci->device) {
1018         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1019                 my_thread = tvaudio_thread;
1020                 break;
1021         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1022         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1023                 my_thread = tvaudio_thread_ddep;
1024                 break;
1025         }
1026
1027         dev->thread.thread = NULL;
1028         dev->thread.scan1 = dev->thread.scan2 = 0;
1029         if (my_thread) {
1030                 saa7134_tvaudio_init(dev);
1031                 /* start tvaudio thread */
1032                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1033                 if (IS_ERR(dev->thread.thread)) {
1034                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
1035                                dev->name);
1036                         /* XXX: missing error handling here */
1037                 }
1038         }
1039
1040         saa7134_enable_i2s(dev);
1041         return 0;
1042 }
1043
1044 int saa7134_tvaudio_close(struct saa7134_dev *dev)
1045 {
1046         dev->automute = 1;
1047         /* anything else to undo? */
1048         return 0;
1049 }
1050
1051 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1052 {
1053         /* shutdown tvaudio thread */
1054         if (dev->thread.thread && !dev->thread.stopped)
1055                 kthread_stop(dev->thread.thread);
1056
1057         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1058         return 0;
1059 }
1060
1061 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1062 {
1063         if (dev->input->amux != TV) {
1064                 dprintk("sound IF not in use, skipping scan\n");
1065                 dev->automute = 0;
1066                 saa7134_tvaudio_setmute(dev);
1067         } else if (dev->thread.thread) {
1068                 dev->thread.mode = UNSET;
1069                 dev->thread.scan2++;
1070
1071                 if (!dev->insuspend && !dev->thread.stopped)
1072                         wake_up_process(dev->thread.thread);
1073         } else {
1074                 dev->automute = 0;
1075                 saa7134_tvaudio_setmute(dev);
1076         }
1077         return 0;
1078 }
1079
1080 EXPORT_SYMBOL(saa_dsp_writel);
1081 EXPORT_SYMBOL(saa7134_tvaudio_setmute);