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

   1 /*
   2  * device driver for philips saa7134 based TV cards
   3  * tv audio decoder (fm stereo, nicam, ...)
   4  *
   5  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/list.h>
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/slab.h>
  27 #include <linux/delay.h>
  28 #include <linux/smp_lock.h>
  29 #include <asm/div64.h>
  30
  31 #include "saa7134-reg.h"
  32 #include "saa7134.h"
  33
  34 /* ------------------------------------------------------------------ */
  35
  36 static unsigned int audio_debug = 0;
  37 MODULE_PARM(audio_debug,"i");
  38 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  39
  40 static unsigned int audio_ddep = 0;
  41 MODULE_PARM(audio_ddep,"i");
  42 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  43
  44 static int audio_clock_override = UNSET;
  45 MODULE_PARM(audio_clock_override, "i");
  46
  47 static int audio_clock_tweak = 0;
  48 MODULE_PARM(audio_clock_tweak, "i");
  49 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  50
  51 #define dprintk(fmt, arg...)    if (audio_debug) \
  52         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  53 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  54         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  55
  56 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  57                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  58
  59 #define SCAN_INITIAL_DELAY     (HZ)
  60 #define SCAN_SAMPLE_DELAY      (HZ/5)
  61 #define SCAN_SUBCARRIER_DELAY  (HZ*2)
  62
  63 /* ------------------------------------------------------------------ */
  64 /* saa7134 code                                                       */
  65
  66 static struct mainscan {
  67         char         *name;
  68         v4l2_std_id  std;
  69         int          carr;
  70 } mainscan[] = {
  71         {
  72                 .name = "M",
  73                 .std  = V4L2_STD_NTSC | V4L2_STD_PAL_M,
  74                 .carr = 4500,
  75         },{
  76                 .name = "BG",
  77                 .std  = V4L2_STD_PAL_BG,
  78                 .carr = 5500,
  79         },{
  80                 .name = "I",
  81                 .std  = V4L2_STD_PAL_I,
  82                 .carr = 6000,
  83         },{
  84                 .name = "DKL",
  85                 .std  = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
  86                 .carr = 6500,
  87         }
  88 };
  89
  90 static struct saa7134_tvaudio tvaudio[] = {
  91         {
  92                 .name          = "PAL-B/G FM-stereo",
  93                 .std           = V4L2_STD_PAL,
  94                 .mode          = TVAUDIO_FM_BG_STEREO,
  95                 .carr1         = 5500,
  96                 .carr2         = 5742,
  97         },{
  98                 .name          = "PAL-D/K1 FM-stereo",
  99                 .std           = V4L2_STD_PAL,
 100                 .carr1         = 6500,
 101                 .carr2         = 6258,
 102                 .mode          = TVAUDIO_FM_BG_STEREO,
 103         },{
 104                 .name          = "PAL-D/K2 FM-stereo",
 105                 .std           = V4L2_STD_PAL,
 106                 .carr1         = 6500,
 107                 .carr2         = 6742,
 108                 .mode          = TVAUDIO_FM_BG_STEREO,
 109         },{
 110                 .name          = "PAL-D/K3 FM-stereo",
 111                 .std           = V4L2_STD_PAL,
 112                 .carr1         = 6500,
 113                 .carr2         = 5742,
 114                 .mode          = TVAUDIO_FM_BG_STEREO,
 115         },{
 116                 .name          = "PAL-B/G NICAM",
 117                 .std           = V4L2_STD_PAL,
 118                 .carr1         = 5500,
 119                 .carr2         = 5850,
 120                 .mode          = TVAUDIO_NICAM_FM,
 121         },{
 122                 .name          = "PAL-I NICAM",
 123                 .std           = V4L2_STD_PAL,
 124                 .carr1         = 6000,
 125                 .carr2         = 6552,
 126                 .mode          = TVAUDIO_NICAM_FM,
 127         },{
 128                 .name          = "PAL-D/K NICAM",
 129                 .std           = V4L2_STD_PAL,
 130                 .carr1         = 6500,
 131                 .carr2         = 5850,
 132                 .mode          = TVAUDIO_NICAM_FM,
 133         },{
 134                 .name          = "SECAM-L NICAM",
 135                 .std           = V4L2_STD_SECAM,
 136                 .carr1         = 6500,
 137                 .carr2         = 5850,
 138                 .mode          = TVAUDIO_NICAM_AM,
 139         },{
 140                 .name          = "SECAM-D/K",
 141                 .std           = V4L2_STD_SECAM,
 142                 .carr1         = 6500,
 143                 .carr2         = -1,
 144                 .mode          = TVAUDIO_FM_MONO,
 145         },{
 146                 .name          = "NTSC-M",
 147                 .std           = V4L2_STD_NTSC,
 148                 .carr1         = 4500,
 149                 .carr2         = -1,
 150                 .mode          = TVAUDIO_FM_MONO,
 151         },{
 152                 .name          = "NTSC-A2 FM-stereo",
 153                 .std           = V4L2_STD_NTSC,
 154                 .carr1         = 4500,
 155                 .carr2         = 4724,
 156                 .mode          = TVAUDIO_FM_K_STEREO,
 157         }
 158 };
 159 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 160
 161 /* ------------------------------------------------------------------ */
 162
 163 static void tvaudio_init(struct saa7134_dev *dev)
 164 {
 165         int clock = saa7134_boards[dev->board].audio_clock;
 166
 167         if (UNSET != audio_clock_override)
 168                 clock = audio_clock_override;
 169
 170         /* init all audio registers */
 171         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 172         if (need_resched())
 173                 schedule();
 174         else
 175                 udelay(10);
 176
 177         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 178         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 179         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 180         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 181
 182         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 183         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 184         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 185         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 186 }
 187
 188 static u32 tvaudio_carr2reg(u32 carrier)
 189 {
 190         u64 a = carrier;
 191
 192         a <<= 24;
 193         do_div(a,12288);
 194         return a;
 195 }
 196
 197 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 198                                int primary, int secondary)
 199 {
 200         if (-1 == secondary)
 201                 secondary = primary;
 202         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 203         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 204 }
 205
 206 static void mute_input_7134(struct saa7134_dev *dev)
 207 {
 208         unsigned int mute;
 209         struct saa7134_input *in;
 210         int ausel=0, ics=0, ocs=0;
 211         int mask;
 212
 213         /* look what is to do ... */
 214         in   = dev->input;
 215         mute = (dev->ctl_mute ||
 216                 (dev->automute  &&  (&card(dev).radio) != in));
 217         if (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device &&
 218             card(dev).mute.name) {
 219                 /* 7130 - we'll mute using some unconnected audio input */
 220                 if (mute)
 221                         in = &card(dev).mute;
 222         }
 223         if (dev->hw_mute  == mute &&
 224             dev->hw_input == in) {
 225                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 226                         mute,in->name);
 227                 return;
 228         }
 229
 230         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 231                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 232         dev->hw_mute  = mute;
 233         dev->hw_input = in;
 234
 235         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 236                 /* 7134 mute */
 237                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xff : 0xbb);
 238
 239         /* switch internal audio mux */
 240         switch (in->amux) {
 241         case TV:    ausel=0xc0; ics=0x00; ocs=0x02; break;
 242         case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
 243         case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
 244         }
 245         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 246         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 247         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 248
 249         /* switch gpio-connected external audio mux */
 250         if (0 == card(dev).gpiomask)
 251                 return;
 252         mask = card(dev).gpiomask;
 253         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 254         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 255         saa7134_track_gpio(dev,in->name);
 256 }
 257
 258 static void tvaudio_setmode(struct saa7134_dev *dev,
 259                             struct saa7134_tvaudio *audio,
 260                             char *note)
 261 {
 262         int acpf, tweak = 0;
 263
 264         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 265                 acpf = 0x19066;
 266         } else {
 267                 acpf = 0x1e000;
 268         }
 269         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 270                 tweak = audio_clock_tweak;
 271
 272         if (note)
 273                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 274                         note,audio->name,
 275                         audio->carr1 / 1000, audio->carr1 % 1000,
 276                         audio->carr2 / 1000, audio->carr2 % 1000,
 277                         acpf, tweak);
 278
 279         acpf += tweak;
 280         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 281         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 282         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 283         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 284
 285         switch (audio->mode) {
 286         case TVAUDIO_FM_MONO:
 287         case TVAUDIO_FM_BG_STEREO:
 288                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 289                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 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_FM_K_STEREO:
 295                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 296                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 297                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 298                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 299                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 300                 break;
 301         case TVAUDIO_NICAM_FM:
 302                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 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_NICAM_AM:
 309                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 310                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 311                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 312                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 313                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 314                 break;
 315         case TVAUDIO_FM_SAT_STEREO:
 316                 /* not implemented (yet) */
 317                 break;
 318         }
 319 }
 320
 321 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 322 {
 323         DECLARE_WAITQUEUE(wait, current);
 324
 325         add_wait_queue(&dev->thread.wq, &wait);
 326         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 327                 set_current_state(TASK_INTERRUPTIBLE);
 328                 if (timeout < 0)
 329                         schedule();
 330                 else
 331                         schedule_timeout(timeout);
 332         }
 333         remove_wait_queue(&dev->thread.wq, &wait);
 334         return dev->thread.scan1 != dev->thread.scan2;
 335 }
 336
 337 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 338 {
 339         __s32 left,right,value;
 340
 341         if (audio_debug > 1) {
 342                 int i;
 343                 dprintk("debug %d:",scan->carr);
 344                 for (i = -150; i <= 150; i += 30) {
 345                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 346                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 347                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 348                                 return -1;
 349                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 350                         if (0 == i)
 351                                 printk("  #  %6d  # ",value >> 16);
 352                         else
 353                                 printk(" %6d",value >> 16);
 354                 }
 355                 printk("\n");
 356         }
 357
 358         if (dev->tvnorm->id & scan->std) {
 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         } else {
 378                 value = 0;
 379                 dprintk("skipping %d.%03d MHz [%4s]\n",
 380                         scan->carr / 1000, scan->carr % 1000, scan->name);
 381         }
 382         return value;
 383 }
 384
 385 #if 0
 386 static void sifdebug_dump_regs(struct saa7134_dev *dev)
 387 {
 388         print_regb(AUDIO_STATUS);
 389         print_regb(IDENT_SIF);
 390         print_regb(LEVEL_READOUT1);
 391         print_regb(LEVEL_READOUT2);
 392         print_regb(DCXO_IDENT_CTRL);
 393         print_regb(DEMODULATOR);
 394         print_regb(AGC_GAIN_SELECT);
 395         print_regb(MONITOR_SELECT);
 396         print_regb(FM_DEEMPHASIS);
 397         print_regb(FM_DEMATRIX);
 398         print_regb(SIF_SAMPLE_FREQ);
 399         print_regb(ANALOG_IO_SELECT);
 400 }
 401 #endif
 402
 403 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 404 {
 405         __u32 idp,nicam;
 406         int retval = -1;
 407
 408         switch (audio->mode) {
 409         case TVAUDIO_FM_MONO:
 410                 return V4L2_TUNER_SUB_MONO;
 411         case TVAUDIO_FM_K_STEREO:
 412         case TVAUDIO_FM_BG_STEREO:
 413                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 414                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 415                 if (0x03 == (idp & 0x03))
 416                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 417                 else if (0x05 == (idp & 0x05))
 418                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 419                 else if (0x01 == (idp & 0x01))
 420                         retval = V4L2_TUNER_SUB_MONO;
 421                 break;
 422         case TVAUDIO_FM_SAT_STEREO:
 423                 /* not implemented (yet) */
 424                 break;
 425         case TVAUDIO_NICAM_FM:
 426         case TVAUDIO_NICAM_AM:
 427                 nicam = saa_readb(SAA7134_NICAM_STATUS);
 428                 dprintk("getstereo: nicam=0x%x\n",nicam);
 429                 switch (nicam & 0x0b) {
 430                 case 0x08:
 431                         retval = V4L2_TUNER_SUB_MONO;
 432                         break;
 433                 case 0x09:
 434                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 435                         break;
 436                 case 0x0a:
 437                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 438                         break;
 439                 }
 440                 break;
 441         }
 442         if (retval != -1)
 443                 dprintk("found audio subchannels:%s%s%s%s\n",
 444                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 445                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 446                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 447                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 448         return retval;
 449 }
 450
 451 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 452                              u32 mode)
 453 {
 454         static char *name[] = {
 455                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 456                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 457                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 458                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 459         };
 460         static u32 fm[] = {
 461                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 462                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 463                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 464                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 465         };
 466         u32 reg;
 467
 468         switch (audio->mode) {
 469         case TVAUDIO_FM_MONO:
 470                 /* nothing to do ... */
 471                 break;
 472         case TVAUDIO_FM_K_STEREO:
 473         case TVAUDIO_FM_BG_STEREO:
 474                 dprintk("setstereo [fm] => %s\n",
 475                         name[ mode % ARRAY_SIZE(name) ]);
 476                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 477                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 478                 break;
 479         case TVAUDIO_FM_SAT_STEREO:
 480         case TVAUDIO_NICAM_AM:
 481         case TVAUDIO_NICAM_FM:
 482                 /* FIXME */
 483                 break;
 484         }
 485         return 0;
 486 }
 487
 488 static int tvaudio_thread(void *data)
 489 {
 490         struct saa7134_dev *dev = data;
 491         int carr_vals[ARRAY_SIZE(mainscan)];
 492         unsigned int i, audio, nscan;
 493         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 494
 495         daemonize("%s", dev->name);
 496         allow_signal(SIGTERM);
 497         for (;;) {
 498                 tvaudio_sleep(dev,-1);
 499                 if (dev->thread.shutdown || signal_pending(current))
 500                         goto done;
 501
 502         restart:
 503                 dev->thread.scan1 = dev->thread.scan2;
 504                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 505                 dev->tvaudio  = NULL;
 506                 tvaudio_init(dev);
 507                 if (dev->ctl_automute)
 508                         dev->automute = 1;
 509                 mute_input_7134(dev);
 510
 511                 /* give the tuner some time */
 512                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 513                         goto restart;
 514
 515                 max1 = 0;
 516                 max2 = 0;
 517                 nscan = 0;
 518                 carrier = 0;
 519                 default_carrier = 0;
 520                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 521                         if (!(dev->tvnorm->id & mainscan[i].std))
 522                                 continue;
 523                         if (!default_carrier)
 524                                 default_carrier = mainscan[i].carr;
 525                         nscan++;
 526                 }
 527
 528                 if (1 == nscan) {
 529                         /* only one candidate -- skip scan ;) */
 530                         max1 = 12345;
 531                         carrier = default_carrier;
 532                 } else {
 533                         /* scan for the main carrier */
 534                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 535                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 536                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 537                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 538                                 if (dev->thread.scan1 != dev->thread.scan2)
 539                                         goto restart;
 540                         }
 541                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 542                                 if (max1 < carr_vals[i]) {
 543                                         max2 = max1;
 544                                         max1 = carr_vals[i];
 545                                         carrier = mainscan[i].carr;
 546                                 } else if (max2 < carr_vals[i]) {
 547                                         max2 = carr_vals[i];
 548                                 }
 549                         }
 550                 }
 551
 552                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 553                         /* found good carrier */
 554                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 555                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 556                                 max1, max2);
 557                         dev->last_carrier = carrier;
 558
 559                 } else if (0 != dev->last_carrier) {
 560                         /* no carrier -- try last detected one as fallback */
 561                         carrier = dev->last_carrier;
 562                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 563                                "using %d.%03d MHz [last detected]\n",
 564                                dev->name, carrier/1000, carrier%1000);
 565
 566                 } else {
 567                         /* no carrier + no fallback -- use default */
 568                         carrier = default_carrier;
 569                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 570                                "using %d.%03d MHz [default]\n",
 571                                dev->name, carrier/1000, carrier%1000);
 572                 }
 573                 tvaudio_setcarrier(dev,carrier,carrier);
 574                 dev->automute = 0;
 575                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 576                 saa7134_tvaudio_setmute(dev);
 577
 578                 /* find the exact tv audio norm */
 579                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 580                         if (dev->tvnorm->id != UNSET &&
 581                             !(dev->tvnorm->id & tvaudio[i].std))
 582                                 continue;
 583                         if (tvaudio[i].carr1 != carrier)
 584                                 continue;
 585
 586                         if (UNSET == audio)
 587                                 audio = i;
 588                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 589                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 590                                 goto restart;
 591                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 592                                 audio = i;
 593                                 break;
 594                         }
 595                 }
 596                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 597                 if (UNSET == audio)
 598                         continue;
 599                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 600                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 601                 dev->tvaudio = &tvaudio[audio];
 602
 603                 lastmode = 42;
 604                 for (;;) {
 605                         if (tvaudio_sleep(dev,5*HZ))
 606                                 goto restart;
 607                         if (dev->thread.shutdown || signal_pending(current))
 608                                 break;
 609                         if (UNSET == dev->thread.mode) {
 610                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 611                                 mode = saa7134_tvaudio_rx2mode(rx);
 612                         } else {
 613                                 mode = dev->thread.mode;
 614                         }
 615                         if (lastmode != mode) {
 616                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 617                                 lastmode = mode;
 618                         }
 619                 }
 620         }
 621
 622  done:
 623         complete_and_exit(&dev->thread.exit, 0);
 624         return 0;
 625 }
 626
 627 /* ------------------------------------------------------------------ */
 628 /* saa7133 / saa7135 code                                             */
 629
 630 static char *stdres[0x20] = {
 631         [0x00] = "no standard detected",
 632         [0x01] = "B/G (in progress)",
 633         [0x02] = "D/K (in progress)",
 634         [0x03] = "M (in progress)",
 635
 636         [0x04] = "B/G A2",
 637         [0x05] = "B/G NICAM",
 638         [0x06] = "D/K A2 (1)",
 639         [0x07] = "D/K A2 (2)",
 640         [0x08] = "D/K A2 (3)",
 641         [0x09] = "D/K NICAM",
 642         [0x0a] = "L NICAM",
 643         [0x0b] = "I NICAM",
 644
 645         [0x0c] = "M Korea",
 646         [0x0d] = "M BTSC ",
 647         [0x0e] = "M EIAJ",
 648
 649         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 650         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 651         [0x11] = "FM radio / IF sel / 50 deemp",
 652         [0x12] = "FM radio / IF sel / 75 deemp",
 653
 654         [0x13 ... 0x1e ] = "unknown",
 655         [0x1f] = "??? [in progress]",
 656 };
 657
 658 #define DSP_RETRY 32
 659 #define DSP_DELAY 16
 660
 661 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 662 {
 663         int state, count = DSP_RETRY;
 664
 665         state = saa_readb(SAA7135_DSP_RWSTATE);
 666         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 667                 printk("%s: dsp access error\n",dev->name);
 668                 /* FIXME: send ack ... */
 669                 return -EIO;
 670         }
 671         while (0 == (state & bit)) {
 672                 if (unlikely(0 == count)) {
 673                         printk("%s: dsp access wait timeout [bit=%s]\n",
 674                                dev->name,
 675                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 676                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 677                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 678                                "???");
 679                         return -EIO;
 680                 }
 681                 saa_wait(DSP_DELAY);
 682                 state = saa_readb(SAA7135_DSP_RWSTATE);
 683                 count--;
 684         }
 685         return 0;
 686 }
 687
 688 #if 0
 689 static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value)
 690 {
 691         int err;
 692
 693         d2printk("dsp read reg 0x%x\n", reg<<2);
 694         saa_readl(reg);
 695         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB);
 696         if (err < 0)
 697                 return err;
 698         *value = saa_readl(reg);
 699         d2printk("dsp read   => 0x%06x\n", *value & 0xffffff);
 700         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA);
 701         if (err < 0)
 702                 return err;
 703         return 0;
 704 }
 705 #endif
 706
 707 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 708 {
 709         int err;
 710
 711         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 712         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 713         if (err < 0)
 714                 return err;
 715         saa_writel(reg,value);
 716         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 717         if (err < 0)
 718                 return err;
 719         return 0;
 720 }
 721
 722 static int getstereo_7133(struct saa7134_dev *dev)
 723 {
 724         int retval = V4L2_TUNER_SUB_MONO;
 725         u32 value;
 726
 727         value = saa_readl(0x528 >> 2);
 728         if (value & 0x20)
 729                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 730         if (value & 0x40)
 731                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 732         return retval;
 733 }
 734
 735 static int mute_input_7133(struct saa7134_dev *dev)
 736 {
 737         u32 reg = 0;
 738
 739         switch (dev->input->amux) {
 740         case TV:    reg = 0x02; break;
 741         case LINE1: reg = 0x00; break;
 742         case LINE2: reg = 0x01; break;
 743         }
 744         if (dev->ctl_mute)
 745                 reg = 0x07;
 746         saa_writel(0x594 >> 2, reg);
 747         return 0;
 748 }
 749
 750 static int tvaudio_thread_ddep(void *data)
 751 {
 752         struct saa7134_dev *dev = data;
 753         u32 value, norms, clock;
 754
 755         daemonize("%s", dev->name);
 756         allow_signal(SIGTERM);
 757
 758         clock = saa7134_boards[dev->board].audio_clock;
 759         if (UNSET != audio_clock_override)
 760                 clock = audio_clock_override;
 761         saa_writel(0x598 >> 2, clock);
 762
 763         /* unmute */
 764         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 765         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 766
 767         for (;;) {
 768                 tvaudio_sleep(dev,-1);
 769                 if (dev->thread.shutdown || signal_pending(current))
 770                         goto done;
 771
 772         restart:
 773                 dev->thread.scan1 = dev->thread.scan2;
 774                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 775
 776                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 777                         /* insmod option override */
 778                         norms = (audio_ddep << 2) | 0x01;
 779                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 780                 } else{
 781                         /* (let chip) scan for sound carrier */
 782                         norms = 0;
 783                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 784                                 dprintk("PAL scan\n");
 785                                 norms |= 0x2c; /* B/G + D/K + I */
 786                         }
 787                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 788                                 dprintk("NTSC scan\n");
 789                                 norms |= 0x40; /* M */
 790                         }
 791                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 792                                 dprintk("SECAM scan\n");
 793                                 norms |= 0x18; /* L + D/K */
 794                         }
 795                         if (0 == norms)
 796                                 norms = 0x7c; /* all */
 797                         dprintk("scanning:%s%s%s%s%s\n",
 798                                 (norms & 0x04) ? " B/G"  : "",
 799                                 (norms & 0x08) ? " D/K"  : "",
 800                                 (norms & 0x10) ? " L/L'" : "",
 801                                 (norms & 0x20) ? " I"    : "",
 802                                 (norms & 0x40) ? " M"    : "");
 803                 }
 804
 805                 /* kick automatic standard detection */
 806                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 807                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 808
 809                 /* setup crossbars */
 810                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 811                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 812
 813                 if (tvaudio_sleep(dev,3*HZ))
 814                         goto restart;
 815                 value = saa_readl(0x528 >> 2) & 0xffffff;
 816
 817                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 818                         value, stdres[value & 0x1f],
 819                         (value & 0x000020) ? ",stereo" : "",
 820                         (value & 0x000040) ? ",dual"   : "");
 821                 dprintk("detailed status: "
 822                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 823                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 824                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 825                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 826                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 827
 828                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 829                         (value & 0x001000) ? " SAP carrier "            : "",
 830                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 831                         (value & 0x004000) ? " SAP noise mute "         : "",
 832                         (value & 0x008000) ? " VDSP "                   : "",
 833
 834                         (value & 0x010000) ? " NICST "                  : "",
 835                         (value & 0x020000) ? " NICDU "                  : "",
 836                         (value & 0x040000) ? " NICAM muted "            : "",
 837                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 838
 839                         (value & 0x100000) ? " init done "              : "");
 840         }
 841
 842  done:
 843         complete_and_exit(&dev->thread.exit, 0);
 844         return 0;
 845 }
 846
 847 /* ------------------------------------------------------------------ */
 848 /* common stuff + external entry points                               */
 849
 850 int saa7134_tvaudio_rx2mode(u32 rx)
 851 {
 852         u32 mode;
 853
 854         mode = V4L2_TUNER_MODE_MONO;
 855         if (rx & V4L2_TUNER_SUB_STEREO)
 856                 mode = V4L2_TUNER_MODE_STEREO;
 857         else if (rx & V4L2_TUNER_SUB_LANG1)
 858                 mode = V4L2_TUNER_MODE_LANG1;
 859         else if (rx & V4L2_TUNER_SUB_LANG2)
 860                 mode = V4L2_TUNER_MODE_LANG2;
 861         return mode;
 862 }
 863
 864 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 865 {
 866         switch (dev->pci->device) {
 867         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 868         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 869                 mute_input_7134(dev);
 870                 break;
 871         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 872         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 873                 mute_input_7133(dev);
 874                 break;
 875         }
 876 }
 877
 878 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 879                               struct saa7134_input *in)
 880 {
 881         dev->input = in;
 882         switch (dev->pci->device) {
 883         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 884         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 885                 mute_input_7134(dev);
 886                 break;
 887         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 888         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 889                 mute_input_7133(dev);
 890                 break;
 891         }
 892 }
 893
 894 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 895 {
 896         switch (dev->pci->device) {
 897         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 898                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 899                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 900                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 901                 break;
 902         }
 903 }
 904
 905 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 906 {
 907         int retval = V4L2_TUNER_SUB_MONO;
 908
 909         switch (dev->pci->device) {
 910         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 911                 if (dev->tvaudio)
 912                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 913                 break;
 914         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 915         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 916                 retval = getstereo_7133(dev);
 917                 break;
 918         }
 919         return retval;
 920 }
 921
 922 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 923 {
 924         DECLARE_MUTEX_LOCKED(sem);
 925         int (*my_thread)(void *data) = NULL;
 926
 927         /* enable I2S audio output */
 928         if (saa7134_boards[dev->board].has_ts) {
 929                 int i2sform = (48000 == dev->oss.rate)
 930                         ? 0x01 : 0x00;
 931
 932                 /* enable I2S output */
 933                 saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 934                 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2sform);
 935                 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 936                 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 937         }
 938
 939         switch (dev->pci->device) {
 940         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 941                 my_thread = tvaudio_thread;
 942                 break;
 943         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 944         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 945                 my_thread = tvaudio_thread_ddep;
 946                 break;
 947         }
 948
 949         dev->thread.pid = -1;
 950         if (my_thread) {
 951                 /* start tvaudio thread */
 952                 init_waitqueue_head(&dev->thread.wq);
 953                 init_completion(&dev->thread.exit);
 954                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 955                 if (dev->thread.pid < 0)
 956                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 957                                dev->name);
 958                 wake_up_interruptible(&dev->thread.wq);
 959         }
 960
 961         return 0;
 962 }
 963
 964 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 965 {
 966         /* shutdown tvaudio thread */
 967         if (dev->thread.pid >= 0) {
 968                 dev->thread.shutdown = 1;
 969                 wake_up_interruptible(&dev->thread.wq);
 970                 wait_for_completion(&dev->thread.exit);
 971         }
 972         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
 973         return 0;
 974 }
 975
 976 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
 977 {
 978         if (dev->thread.pid >= 0) {
 979                 dev->thread.mode = UNSET;
 980                 dev->thread.scan2++;
 981                 wake_up_interruptible(&dev->thread.wq);
 982         } else {
 983                 dev->automute = 0;
 984                 saa7134_tvaudio_setmute(dev);
 985         }
 986         return 0;
 987 }
 988
 989 /* ----------------------------------------------------------- */
 990 /*
 991  * Local variables:
 992  * c-basic-offset: 8
 993  * End:
 994  */