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

   1 /*
   2  * $Id: saa7134-tvaudio.c,v 1.17 2004/11/07 13:17:15 kraxel Exp $
   3  *
   4  * device driver for philips saa7134 based TV cards
   5  * tv audio decoder (fm stereo, nicam, ...)
   6  *
   7  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/list.h>
  26 #include <linux/module.h>
  27 #include <linux/kernel.h>
  28 #include <linux/slab.h>
  29 #include <linux/delay.h>
  30 #include <linux/smp_lock.h>
  31 #include <asm/div64.h>
  32
  33 #include "saa7134-reg.h"
  34 #include "saa7134.h"
  35
  36 /* ------------------------------------------------------------------ */
  37
  38 static unsigned int audio_debug = 0;
  39 module_param(audio_debug, int, 0644);
  40 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  41
  42 static unsigned int audio_ddep = 0;
  43 module_param(audio_ddep, int, 0644);
  44 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  45
  46 static int audio_clock_override = UNSET;
  47 module_param(audio_clock_override, int, 0644);
  48
  49 static int audio_clock_tweak = 0;
  50 module_param(audio_clock_tweak, int, 0644);
  51 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  52
  53 #define dprintk(fmt, arg...)    if (audio_debug) \
  54         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  55 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  56         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  57
  58 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  59                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  60
  61 /* msecs */
  62 #define SCAN_INITIAL_DELAY     1000
  63 #define SCAN_SAMPLE_DELAY       200
  64 #define SCAN_SUBCARRIER_DELAY  2000
  65
  66 /* ------------------------------------------------------------------ */
  67 /* saa7134 code                                                       */
  68
  69 static struct mainscan {
  70         char         *name;
  71         v4l2_std_id  std;
  72         int          carr;
  73 } mainscan[] = {
  74         {
  75                 .name = "M",
  76                 .std  = V4L2_STD_NTSC | V4L2_STD_PAL_M,
  77                 .carr = 4500,
  78         },{
  79                 .name = "BG",
  80                 .std  = V4L2_STD_PAL_BG,
  81                 .carr = 5500,
  82         },{
  83                 .name = "I",
  84                 .std  = V4L2_STD_PAL_I,
  85                 .carr = 6000,
  86         },{
  87                 .name = "DKL",
  88                 .std  = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
  89                 .carr = 6500,
  90         }
  91 };
  92
  93 static struct saa7134_tvaudio tvaudio[] = {
  94         {
  95                 .name          = "PAL-B/G FM-stereo",
  96                 .std           = V4L2_STD_PAL,
  97                 .mode          = TVAUDIO_FM_BG_STEREO,
  98                 .carr1         = 5500,
  99                 .carr2         = 5742,
 100         },{
 101                 .name          = "PAL-D/K1 FM-stereo",
 102                 .std           = V4L2_STD_PAL,
 103                 .carr1         = 6500,
 104                 .carr2         = 6258,
 105                 .mode          = TVAUDIO_FM_BG_STEREO,
 106         },{
 107                 .name          = "PAL-D/K2 FM-stereo",
 108                 .std           = V4L2_STD_PAL,
 109                 .carr1         = 6500,
 110                 .carr2         = 6742,
 111                 .mode          = TVAUDIO_FM_BG_STEREO,
 112         },{
 113                 .name          = "PAL-D/K3 FM-stereo",
 114                 .std           = V4L2_STD_PAL,
 115                 .carr1         = 6500,
 116                 .carr2         = 5742,
 117                 .mode          = TVAUDIO_FM_BG_STEREO,
 118         },{
 119                 .name          = "PAL-B/G NICAM",
 120                 .std           = V4L2_STD_PAL,
 121                 .carr1         = 5500,
 122                 .carr2         = 5850,
 123                 .mode          = TVAUDIO_NICAM_FM,
 124         },{
 125                 .name          = "PAL-I NICAM",
 126                 .std           = V4L2_STD_PAL,
 127                 .carr1         = 6000,
 128                 .carr2         = 6552,
 129                 .mode          = TVAUDIO_NICAM_FM,
 130         },{
 131                 .name          = "PAL-D/K NICAM",
 132                 .std           = V4L2_STD_PAL,
 133                 .carr1         = 6500,
 134                 .carr2         = 5850,
 135                 .mode          = TVAUDIO_NICAM_FM,
 136         },{
 137                 .name          = "SECAM-L NICAM",
 138                 .std           = V4L2_STD_SECAM,
 139                 .carr1         = 6500,
 140                 .carr2         = 5850,
 141                 .mode          = TVAUDIO_NICAM_AM,
 142         },{
 143                 .name          = "SECAM-D/K",
 144                 .std           = V4L2_STD_SECAM,
 145                 .carr1         = 6500,
 146                 .carr2         = -1,
 147                 .mode          = TVAUDIO_FM_MONO,
 148         },{
 149                 .name          = "NTSC-M",
 150                 .std           = V4L2_STD_NTSC,
 151                 .carr1         = 4500,
 152                 .carr2         = -1,
 153                 .mode          = TVAUDIO_FM_MONO,
 154         },{
 155                 .name          = "NTSC-A2 FM-stereo",
 156                 .std           = V4L2_STD_NTSC,
 157                 .carr1         = 4500,
 158                 .carr2         = 4724,
 159                 .mode          = TVAUDIO_FM_K_STEREO,
 160         }
 161 };
 162 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 163
 164 /* ------------------------------------------------------------------ */
 165
 166 static void tvaudio_init(struct saa7134_dev *dev)
 167 {
 168         int clock = saa7134_boards[dev->board].audio_clock;
 169
 170         if (UNSET != audio_clock_override)
 171                 clock = audio_clock_override;
 172
 173         /* init all audio registers */
 174         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 175         if (need_resched())
 176                 schedule();
 177         else
 178                 udelay(10);
 179
 180         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 181         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 182         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 183         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 184
 185         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 186         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 187         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 188         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 189 }
 190
 191 static u32 tvaudio_carr2reg(u32 carrier)
 192 {
 193         u64 a = carrier;
 194
 195         a <<= 24;
 196         do_div(a,12288);
 197         return a;
 198 }
 199
 200 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 201                                int primary, int secondary)
 202 {
 203         if (-1 == secondary)
 204                 secondary = primary;
 205         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 206         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 207 }
 208
 209 static void mute_input_7134(struct saa7134_dev *dev)
 210 {
 211         unsigned int mute;
 212         struct saa7134_input *in;
 213         int ausel=0, ics=0, ocs=0;
 214         int mask;
 215
 216         /* look what is to do ... */
 217         in   = dev->input;
 218         mute = (dev->ctl_mute ||
 219                 (dev->automute  &&  (&card(dev).radio) != in));
 220         if (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device &&
 221             card(dev).mute.name) {
 222                 /* 7130 - we'll mute using some unconnected audio input */
 223                 if (mute)
 224                         in = &card(dev).mute;
 225         }
 226         if (dev->hw_mute  == mute &&
 227             dev->hw_input == in) {
 228                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 229                         mute,in->name);
 230                 return;
 231         }
 232
 233         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 234                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 235         dev->hw_mute  = mute;
 236         dev->hw_input = in;
 237
 238         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 239                 /* 7134 mute */
 240                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xff : 0xbb);
 241
 242         /* switch internal audio mux */
 243         switch (in->amux) {
 244         case TV:    ausel=0xc0; ics=0x00; ocs=0x02; break;
 245         case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
 246         case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
 247         }
 248         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 249         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 250         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 251
 252         /* switch gpio-connected external audio mux */
 253         if (0 == card(dev).gpiomask)
 254                 return;
 255         mask = card(dev).gpiomask;
 256         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 257         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 258         saa7134_track_gpio(dev,in->name);
 259 }
 260
 261 static void tvaudio_setmode(struct saa7134_dev *dev,
 262                             struct saa7134_tvaudio *audio,
 263                             char *note)
 264 {
 265         int acpf, tweak = 0;
 266
 267         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 268                 acpf = 0x19066;
 269         } else {
 270                 acpf = 0x1e000;
 271         }
 272         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 273                 tweak = audio_clock_tweak;
 274
 275         if (note)
 276                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 277                         note,audio->name,
 278                         audio->carr1 / 1000, audio->carr1 % 1000,
 279                         audio->carr2 / 1000, audio->carr2 % 1000,
 280                         acpf, tweak);
 281
 282         acpf += tweak;
 283         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 284         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 285         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 286         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 287
 288         switch (audio->mode) {
 289         case TVAUDIO_FM_MONO:
 290         case TVAUDIO_FM_BG_STEREO:
 291                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 292                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 293                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 294                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 295                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 296                 break;
 297         case TVAUDIO_FM_K_STEREO:
 298                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 299                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 300                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 301                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 302                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 303                 break;
 304         case TVAUDIO_NICAM_FM:
 305                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 306                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 307                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 308                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 309                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 310                 break;
 311         case TVAUDIO_NICAM_AM:
 312                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 313                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 314                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 315                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 316                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 317                 break;
 318         case TVAUDIO_FM_SAT_STEREO:
 319                 /* not implemented (yet) */
 320                 break;
 321         }
 322 }
 323
 324 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 325 {
 326         DECLARE_WAITQUEUE(wait, current);
 327
 328         add_wait_queue(&dev->thread.wq, &wait);
 329         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 330                 if (timeout < 0) {
 331                         set_current_state(TASK_INTERRUPTIBLE);
 332                         schedule();
 333                 } else {
 334 #if 0
 335                         /* hmm, that one doesn't return on wakeup ... */
 336                         msleep_interruptible(timeout);
 337 #else
 338                         set_current_state(TASK_INTERRUPTIBLE);
 339                         schedule_timeout(msecs_to_jiffies(timeout));
 340 #endif
 341                 }
 342         }
 343         remove_wait_queue(&dev->thread.wq, &wait);
 344         return dev->thread.scan1 != dev->thread.scan2;
 345 }
 346
 347 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 348 {
 349         __s32 left,right,value;
 350
 351         if (audio_debug > 1) {
 352                 int i;
 353                 dprintk("debug %d:",scan->carr);
 354                 for (i = -150; i <= 150; i += 30) {
 355                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 356                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 357                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 358                                 return -1;
 359                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 360                         if (0 == i)
 361                                 printk("  #  %6d  # ",value >> 16);
 362                         else
 363                                 printk(" %6d",value >> 16);
 364                 }
 365                 printk("\n");
 366         }
 367
 368         if (dev->tvnorm->id & scan->std) {
 369                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 370                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 371                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 372                         return -1;
 373                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 374
 375                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 376                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 377                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 378                         return -1;
 379                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 380
 381                 left >>= 16;
 382                 right >>= 16;
 383                 value = left > right ? left - right : right - left;
 384                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 385                         scan->carr / 1000, scan->carr % 1000,
 386                         scan->name, value, left, right);
 387         } else {
 388                 value = 0;
 389                 dprintk("skipping %d.%03d MHz [%4s]\n",
 390                         scan->carr / 1000, scan->carr % 1000, scan->name);
 391         }
 392         return value;
 393 }
 394
 395 #if 0
 396 static void sifdebug_dump_regs(struct saa7134_dev *dev)
 397 {
 398         print_regb(AUDIO_STATUS);
 399         print_regb(IDENT_SIF);
 400         print_regb(LEVEL_READOUT1);
 401         print_regb(LEVEL_READOUT2);
 402         print_regb(DCXO_IDENT_CTRL);
 403         print_regb(DEMODULATOR);
 404         print_regb(AGC_GAIN_SELECT);
 405         print_regb(MONITOR_SELECT);
 406         print_regb(FM_DEEMPHASIS);
 407         print_regb(FM_DEMATRIX);
 408         print_regb(SIF_SAMPLE_FREQ);
 409         print_regb(ANALOG_IO_SELECT);
 410 }
 411 #endif
 412
 413 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 414 {
 415         __u32 idp,nicam;
 416         int retval = -1;
 417
 418         switch (audio->mode) {
 419         case TVAUDIO_FM_MONO:
 420                 return V4L2_TUNER_SUB_MONO;
 421         case TVAUDIO_FM_K_STEREO:
 422         case TVAUDIO_FM_BG_STEREO:
 423                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 424                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 425                 if (0x03 == (idp & 0x03))
 426                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 427                 else if (0x05 == (idp & 0x05))
 428                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 429                 else if (0x01 == (idp & 0x01))
 430                         retval = V4L2_TUNER_SUB_MONO;
 431                 break;
 432         case TVAUDIO_FM_SAT_STEREO:
 433                 /* not implemented (yet) */
 434                 break;
 435         case TVAUDIO_NICAM_FM:
 436         case TVAUDIO_NICAM_AM:
 437                 nicam = saa_readb(SAA7134_NICAM_STATUS);
 438                 dprintk("getstereo: nicam=0x%x\n",nicam);
 439                 switch (nicam & 0x0b) {
 440                 case 0x08:
 441                         retval = V4L2_TUNER_SUB_MONO;
 442                         break;
 443                 case 0x09:
 444                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 445                         break;
 446                 case 0x0a:
 447                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 448                         break;
 449                 }
 450                 break;
 451         }
 452         if (retval != -1)
 453                 dprintk("found audio subchannels:%s%s%s%s\n",
 454                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 455                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 456                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 457                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 458         return retval;
 459 }
 460
 461 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 462                              u32 mode)
 463 {
 464         static char *name[] = {
 465                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 466                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 467                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 468                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 469         };
 470         static u32 fm[] = {
 471                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 472                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 473                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 474                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 475         };
 476         u32 reg;
 477
 478         switch (audio->mode) {
 479         case TVAUDIO_FM_MONO:
 480                 /* nothing to do ... */
 481                 break;
 482         case TVAUDIO_FM_K_STEREO:
 483         case TVAUDIO_FM_BG_STEREO:
 484                 dprintk("setstereo [fm] => %s\n",
 485                         name[ mode % ARRAY_SIZE(name) ]);
 486                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 487                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 488                 break;
 489         case TVAUDIO_FM_SAT_STEREO:
 490         case TVAUDIO_NICAM_AM:
 491         case TVAUDIO_NICAM_FM:
 492                 /* FIXME */
 493                 break;
 494         }
 495         return 0;
 496 }
 497
 498 static int tvaudio_thread(void *data)
 499 {
 500         struct saa7134_dev *dev = data;
 501         int carr_vals[ARRAY_SIZE(mainscan)];
 502         unsigned int i, audio, nscan;
 503         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 504
 505         daemonize("%s", dev->name);
 506         allow_signal(SIGTERM);
 507         for (;;) {
 508                 tvaudio_sleep(dev,-1);
 509                 if (dev->thread.shutdown || signal_pending(current))
 510                         goto done;
 511
 512         restart:
 513                 dev->thread.scan1 = dev->thread.scan2;
 514                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 515                 dev->tvaudio  = NULL;
 516                 tvaudio_init(dev);
 517                 if (dev->ctl_automute)
 518                         dev->automute = 1;
 519                 mute_input_7134(dev);
 520
 521                 /* give the tuner some time */
 522                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 523                         goto restart;
 524
 525                 max1 = 0;
 526                 max2 = 0;
 527                 nscan = 0;
 528                 carrier = 0;
 529                 default_carrier = 0;
 530                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 531                         if (!(dev->tvnorm->id & mainscan[i].std))
 532                                 continue;
 533                         if (!default_carrier)
 534                                 default_carrier = mainscan[i].carr;
 535                         nscan++;
 536                 }
 537
 538                 if (1 == nscan) {
 539                         /* only one candidate -- skip scan ;) */
 540                         max1 = 12345;
 541                         carrier = default_carrier;
 542                 } else {
 543                         /* scan for the main carrier */
 544                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 545                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 546                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 547                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 548                                 if (dev->thread.scan1 != dev->thread.scan2)
 549                                         goto restart;
 550                         }
 551                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 552                                 if (max1 < carr_vals[i]) {
 553                                         max2 = max1;
 554                                         max1 = carr_vals[i];
 555                                         carrier = mainscan[i].carr;
 556                                 } else if (max2 < carr_vals[i]) {
 557                                         max2 = carr_vals[i];
 558                                 }
 559                         }
 560                 }
 561
 562                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 563                         /* found good carrier */
 564                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 565                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 566                                 max1, max2);
 567                         dev->last_carrier = carrier;
 568
 569                 } else if (0 != dev->last_carrier) {
 570                         /* no carrier -- try last detected one as fallback */
 571                         carrier = dev->last_carrier;
 572                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 573                                "using %d.%03d MHz [last detected]\n",
 574                                dev->name, carrier/1000, carrier%1000);
 575
 576                 } else {
 577                         /* no carrier + no fallback -- use default */
 578                         carrier = default_carrier;
 579                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 580                                "using %d.%03d MHz [default]\n",
 581                                dev->name, carrier/1000, carrier%1000);
 582                 }
 583                 tvaudio_setcarrier(dev,carrier,carrier);
 584                 dev->automute = 0;
 585                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 586                 saa7134_tvaudio_setmute(dev);
 587
 588                 /* find the exact tv audio norm */
 589                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 590                         if (dev->tvnorm->id != UNSET &&
 591                             !(dev->tvnorm->id & tvaudio[i].std))
 592                                 continue;
 593                         if (tvaudio[i].carr1 != carrier)
 594                                 continue;
 595
 596                         if (UNSET == audio)
 597                                 audio = i;
 598                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 599                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 600                                 goto restart;
 601                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 602                                 audio = i;
 603                                 break;
 604                         }
 605                 }
 606                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 607                 if (UNSET == audio)
 608                         continue;
 609                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 610                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 611                 dev->tvaudio = &tvaudio[audio];
 612
 613                 lastmode = 42;
 614                 for (;;) {
 615                         if (tvaudio_sleep(dev,5000))
 616                                 goto restart;
 617                         if (dev->thread.shutdown || signal_pending(current))
 618                                 break;
 619                         if (UNSET == dev->thread.mode) {
 620                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 621                                 mode = saa7134_tvaudio_rx2mode(rx);
 622                         } else {
 623                                 mode = dev->thread.mode;
 624                         }
 625                         if (lastmode != mode) {
 626                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 627                                 lastmode = mode;
 628                         }
 629                 }
 630         }
 631
 632  done:
 633         complete_and_exit(&dev->thread.exit, 0);
 634         return 0;
 635 }
 636
 637 /* ------------------------------------------------------------------ */
 638 /* saa7133 / saa7135 code                                             */
 639
 640 static char *stdres[0x20] = {
 641         [0x00] = "no standard detected",
 642         [0x01] = "B/G (in progress)",
 643         [0x02] = "D/K (in progress)",
 644         [0x03] = "M (in progress)",
 645
 646         [0x04] = "B/G A2",
 647         [0x05] = "B/G NICAM",
 648         [0x06] = "D/K A2 (1)",
 649         [0x07] = "D/K A2 (2)",
 650         [0x08] = "D/K A2 (3)",
 651         [0x09] = "D/K NICAM",
 652         [0x0a] = "L NICAM",
 653         [0x0b] = "I NICAM",
 654
 655         [0x0c] = "M Korea",
 656         [0x0d] = "M BTSC ",
 657         [0x0e] = "M EIAJ",
 658
 659         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 660         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 661         [0x11] = "FM radio / IF sel / 50 deemp",
 662         [0x12] = "FM radio / IF sel / 75 deemp",
 663
 664         [0x13 ... 0x1e ] = "unknown",
 665         [0x1f] = "??? [in progress]",
 666 };
 667
 668 #define DSP_RETRY 32
 669 #define DSP_DELAY 16
 670
 671 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 672 {
 673         int state, count = DSP_RETRY;
 674
 675         state = saa_readb(SAA7135_DSP_RWSTATE);
 676         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 677                 printk("%s: dsp access error\n",dev->name);
 678                 /* FIXME: send ack ... */
 679                 return -EIO;
 680         }
 681         while (0 == (state & bit)) {
 682                 if (unlikely(0 == count)) {
 683                         printk("%s: dsp access wait timeout [bit=%s]\n",
 684                                dev->name,
 685                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 686                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 687                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 688                                "???");
 689                         return -EIO;
 690                 }
 691                 saa_wait(DSP_DELAY);
 692                 state = saa_readb(SAA7135_DSP_RWSTATE);
 693                 count--;
 694         }
 695         return 0;
 696 }
 697
 698 #if 0
 699 static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value)
 700 {
 701         int err;
 702
 703         d2printk("dsp read reg 0x%x\n", reg<<2);
 704         saa_readl(reg);
 705         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB);
 706         if (err < 0)
 707                 return err;
 708         *value = saa_readl(reg);
 709         d2printk("dsp read   => 0x%06x\n", *value & 0xffffff);
 710         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA);
 711         if (err < 0)
 712                 return err;
 713         return 0;
 714 }
 715 #endif
 716
 717 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 718 {
 719         int err;
 720
 721         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 722         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 723         if (err < 0)
 724                 return err;
 725         saa_writel(reg,value);
 726         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 727         if (err < 0)
 728                 return err;
 729         return 0;
 730 }
 731
 732 static int getstereo_7133(struct saa7134_dev *dev)
 733 {
 734         int retval = V4L2_TUNER_SUB_MONO;
 735         u32 value;
 736
 737         value = saa_readl(0x528 >> 2);
 738         if (value & 0x20)
 739                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 740         if (value & 0x40)
 741                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 742         return retval;
 743 }
 744
 745 static int mute_input_7133(struct saa7134_dev *dev)
 746 {
 747         u32 reg = 0;
 748         int mask;
 749
 750         switch (dev->input->amux) {
 751         case TV:    reg = 0x02; break;
 752         case LINE1: reg = 0x00; break;
 753         case LINE2: reg = 0x01; break;
 754         }
 755         if (dev->ctl_mute)
 756                 reg = 0x07;
 757         saa_writel(0x594 >> 2, reg);
 758
 759         /* switch gpio-connected external audio mux */
 760         if (0 != card(dev).gpiomask) {
 761                 mask = card(dev).gpiomask;
 762                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 763                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, dev->input->gpio);
 764                 saa7134_track_gpio(dev,dev->input->name);
 765         }
 766         return 0;
 767 }
 768
 769 static int tvaudio_thread_ddep(void *data)
 770 {
 771         struct saa7134_dev *dev = data;
 772         u32 value, norms, clock;
 773
 774         daemonize("%s", dev->name);
 775         allow_signal(SIGTERM);
 776
 777         clock = saa7134_boards[dev->board].audio_clock;
 778         if (UNSET != audio_clock_override)
 779                 clock = audio_clock_override;
 780         saa_writel(0x598 >> 2, clock);
 781
 782         /* unmute */
 783         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 784         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 785
 786         for (;;) {
 787                 tvaudio_sleep(dev,-1);
 788                 if (dev->thread.shutdown || signal_pending(current))
 789                         goto done;
 790
 791         restart:
 792                 dev->thread.scan1 = dev->thread.scan2;
 793                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 794
 795                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 796                         /* insmod option override */
 797                         norms = (audio_ddep << 2) | 0x01;
 798                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 799                 } else if (&card(dev).radio == dev->input) {
 800                         dprintk("FM Radio\n");
 801                         norms = (0x0f << 2) | 0x01;
 802                 } else {
 803                         /* (let chip) scan for sound carrier */
 804                         norms = 0;
 805                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 806                                 dprintk("PAL scan\n");
 807                                 norms |= 0x2c; /* B/G + D/K + I */
 808                         }
 809                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 810                                 dprintk("NTSC scan\n");
 811                                 norms |= 0x40; /* M */
 812                         }
 813                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 814                                 dprintk("SECAM scan\n");
 815                                 norms |= 0x18; /* L + D/K */
 816                         }
 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         complete_and_exit(&dev->thread.exit, 0);
 866         return 0;
 867 }
 868
 869 /* ------------------------------------------------------------------ */
 870 /* common stuff + external entry points                               */
 871
 872 int saa7134_tvaudio_rx2mode(u32 rx)
 873 {
 874         u32 mode;
 875
 876         mode = V4L2_TUNER_MODE_MONO;
 877         if (rx & V4L2_TUNER_SUB_STEREO)
 878                 mode = V4L2_TUNER_MODE_STEREO;
 879         else if (rx & V4L2_TUNER_SUB_LANG1)
 880                 mode = V4L2_TUNER_MODE_LANG1;
 881         else if (rx & V4L2_TUNER_SUB_LANG2)
 882                 mode = V4L2_TUNER_MODE_LANG2;
 883         return mode;
 884 }
 885
 886 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 887 {
 888         switch (dev->pci->device) {
 889         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 890         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 891                 mute_input_7134(dev);
 892                 break;
 893         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 894         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 895                 mute_input_7133(dev);
 896                 break;
 897         }
 898 }
 899
 900 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 901                               struct saa7134_input *in)
 902 {
 903         dev->input = in;
 904         switch (dev->pci->device) {
 905         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 906         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 907                 mute_input_7134(dev);
 908                 break;
 909         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 910         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 911                 mute_input_7133(dev);
 912                 break;
 913         }
 914 }
 915
 916 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 917 {
 918         switch (dev->pci->device) {
 919         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 920                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 921                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 922                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 923                 break;
 924         }
 925 }
 926
 927 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 928 {
 929         int retval = V4L2_TUNER_SUB_MONO;
 930
 931         switch (dev->pci->device) {
 932         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 933                 if (dev->tvaudio)
 934                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 935                 break;
 936         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 937         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 938                 retval = getstereo_7133(dev);
 939                 break;
 940         }
 941         return retval;
 942 }
 943
 944 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 945 {
 946         DECLARE_MUTEX_LOCKED(sem);
 947         int (*my_thread)(void *data) = NULL;
 948
 949         /* enable I2S audio output */
 950         if (card_is_empress(dev)) {
 951                 int i2sform = (48000 == dev->oss.rate)
 952                         ? 0x01 : 0x00;
 953
 954                 /* enable I2S output */
 955                 saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 956                 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2sform);
 957                 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 958                 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 959         }
 960
 961         switch (dev->pci->device) {
 962         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 963                 my_thread = tvaudio_thread;
 964                 break;
 965         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 966         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 967                 my_thread = tvaudio_thread_ddep;
 968                 break;
 969         }
 970
 971         dev->thread.pid = -1;
 972         if (my_thread) {
 973                 /* start tvaudio thread */
 974                 init_waitqueue_head(&dev->thread.wq);
 975                 init_completion(&dev->thread.exit);
 976                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 977                 if (dev->thread.pid < 0)
 978                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 979                                dev->name);
 980                 wake_up_interruptible(&dev->thread.wq);
 981         }
 982
 983         return 0;
 984 }
 985
 986 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 987 {
 988         /* shutdown tvaudio thread */
 989         if (dev->thread.pid >= 0) {
 990                 dev->thread.shutdown = 1;
 991                 wake_up_interruptible(&dev->thread.wq);
 992                 wait_for_completion(&dev->thread.exit);
 993         }
 994         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
 995         return 0;
 996 }
 997
 998 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
 999 {
1000         if (dev->thread.pid >= 0) {
1001                 dev->thread.mode = UNSET;
1002                 dev->thread.scan2++;
1003                 wake_up_interruptible(&dev->thread.wq);
1004         } else {
1005                 dev->automute = 0;
1006                 saa7134_tvaudio_setmute(dev);
1007         }
1008         return 0;
1009 }
1010
1011 /* ----------------------------------------------------------- */
1012 /*
1013  * Local variables:
1014  * c-basic-offset: 8
1015  * End:
1016  */