git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/saa7134/saa7134-tvaudio.c

   1 /*
   2  * $Id: saa7134-tvaudio.c,v 1.22 2005/01/07 13:11:19 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/moduleparam.h>
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/delay.h>
  31 #include <linux/smp_lock.h>
  32 #include <asm/div64.h>
  33
  34 #include "saa7134-reg.h"
  35 #include "saa7134.h"
  36
  37 /* ------------------------------------------------------------------ */
  38
  39 static unsigned int audio_debug = 0;
  40 module_param(audio_debug, int, 0644);
  41 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  42
  43 static unsigned int audio_ddep = 0;
  44 module_param(audio_ddep, int, 0644);
  45 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  46
  47 static int audio_clock_override = UNSET;
  48 module_param(audio_clock_override, int, 0644);
  49
  50 static int audio_clock_tweak = 0;
  51 module_param(audio_clock_tweak, int, 0644);
  52 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  53
  54 #define dprintk(fmt, arg...)    if (audio_debug) \
  55         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  56 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  57         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  58
  59 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  60                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  61
  62 /* msecs */
  63 #define SCAN_INITIAL_DELAY     1000
  64 #define SCAN_SAMPLE_DELAY       200
  65 #define SCAN_SUBCARRIER_DELAY  2000
  66
  67 /* ------------------------------------------------------------------ */
  68 /* saa7134 code                                                       */
  69
  70 static struct mainscan {
  71         char         *name;
  72         v4l2_std_id  std;
  73         int          carr;
  74 } mainscan[] = {
  75         {
  76                 .name = "M",
  77                 .std  = V4L2_STD_NTSC | V4L2_STD_PAL_M,
  78                 .carr = 4500,
  79         },{
  80                 .name = "BG",
  81                 .std  = V4L2_STD_PAL_BG,
  82                 .carr = 5500,
  83         },{
  84                 .name = "I",
  85                 .std  = V4L2_STD_PAL_I,
  86                 .carr = 6000,
  87         },{
  88                 .name = "DKL",
  89                 .std  = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
  90                 .carr = 6500,
  91         }
  92 };
  93
  94 static struct saa7134_tvaudio tvaudio[] = {
  95         {
  96                 .name          = "PAL-B/G FM-stereo",
  97                 .std           = V4L2_STD_PAL,
  98                 .mode          = TVAUDIO_FM_BG_STEREO,
  99                 .carr1         = 5500,
 100                 .carr2         = 5742,
 101         },{
 102                 .name          = "PAL-D/K1 FM-stereo",
 103                 .std           = V4L2_STD_PAL,
 104                 .carr1         = 6500,
 105                 .carr2         = 6258,
 106                 .mode          = TVAUDIO_FM_BG_STEREO,
 107         },{
 108                 .name          = "PAL-D/K2 FM-stereo",
 109                 .std           = V4L2_STD_PAL,
 110                 .carr1         = 6500,
 111                 .carr2         = 6742,
 112                 .mode          = TVAUDIO_FM_BG_STEREO,
 113         },{
 114                 .name          = "PAL-D/K3 FM-stereo",
 115                 .std           = V4L2_STD_PAL,
 116                 .carr1         = 6500,
 117                 .carr2         = 5742,
 118                 .mode          = TVAUDIO_FM_BG_STEREO,
 119         },{
 120                 .name          = "PAL-B/G NICAM",
 121                 .std           = V4L2_STD_PAL,
 122                 .carr1         = 5500,
 123                 .carr2         = 5850,
 124                 .mode          = TVAUDIO_NICAM_FM,
 125         },{
 126                 .name          = "PAL-I NICAM",
 127                 .std           = V4L2_STD_PAL,
 128                 .carr1         = 6000,
 129                 .carr2         = 6552,
 130                 .mode          = TVAUDIO_NICAM_FM,
 131         },{
 132                 .name          = "PAL-D/K NICAM",
 133                 .std           = V4L2_STD_PAL,
 134                 .carr1         = 6500,
 135                 .carr2         = 5850,
 136                 .mode          = TVAUDIO_NICAM_FM,
 137         },{
 138                 .name          = "SECAM-L NICAM",
 139                 .std           = V4L2_STD_SECAM,
 140                 .carr1         = 6500,
 141                 .carr2         = 5850,
 142                 .mode          = TVAUDIO_NICAM_AM,
 143         },{
 144                 .name          = "SECAM-D/K",
 145                 .std           = V4L2_STD_SECAM,
 146                 .carr1         = 6500,
 147                 .carr2         = -1,
 148                 .mode          = TVAUDIO_FM_MONO,
 149         },{
 150                 .name          = "NTSC-M",
 151                 .std           = V4L2_STD_NTSC,
 152                 .carr1         = 4500,
 153                 .carr2         = -1,
 154                 .mode          = TVAUDIO_FM_MONO,
 155         },{
 156                 .name          = "NTSC-A2 FM-stereo",
 157                 .std           = V4L2_STD_NTSC,
 158                 .carr1         = 4500,
 159                 .carr2         = 4724,
 160                 .mode          = TVAUDIO_FM_K_STEREO,
 161         }
 162 };
 163 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 164
 165 /* ------------------------------------------------------------------ */
 166
 167 static void tvaudio_init(struct saa7134_dev *dev)
 168 {
 169         int clock = saa7134_boards[dev->board].audio_clock;
 170
 171         if (UNSET != audio_clock_override)
 172                 clock = audio_clock_override;
 173
 174         /* init all audio registers */
 175         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 176         if (need_resched())
 177                 schedule();
 178         else
 179                 udelay(10);
 180
 181         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 182         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 183         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 184         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 185
 186         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 187         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 188         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 189         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 190 }
 191
 192 static u32 tvaudio_carr2reg(u32 carrier)
 193 {
 194         u64 a = carrier;
 195
 196         a <<= 24;
 197         do_div(a,12288);
 198         return a;
 199 }
 200
 201 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 202                                int primary, int secondary)
 203 {
 204         if (-1 == secondary)
 205                 secondary = primary;
 206         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 207         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 208 }
 209
 210 static void mute_input_7134(struct saa7134_dev *dev)
 211 {
 212         unsigned int mute;
 213         struct saa7134_input *in;
 214         int ausel=0, ics=0, ocs=0;
 215         int mask;
 216
 217         /* look what is to do ... */
 218         in   = dev->input;
 219         mute = (dev->ctl_mute ||
 220                 (dev->automute  &&  (&card(dev).radio) != in));
 221         if (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device &&
 222             card(dev).mute.name) {
 223                 /* 7130 - we'll mute using some unconnected audio input */
 224                 if (mute)
 225                         in = &card(dev).mute;
 226         }
 227         if (dev->hw_mute  == mute &&
 228             dev->hw_input == in) {
 229                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 230                         mute,in->name);
 231                 return;
 232         }
 233
 234         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 235                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 236         dev->hw_mute  = mute;
 237         dev->hw_input = in;
 238
 239         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 240                 /* 7134 mute */
 241                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xbf : 0xbb);
 242
 243         /* switch internal audio mux */
 244         switch (in->amux) {
 245         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 246         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 247         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 248         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 249         }
 250         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 251         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 252         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 253
 254         /* switch gpio-connected external audio mux */
 255         if (0 == card(dev).gpiomask)
 256                 return;
 257         mask = card(dev).gpiomask;
 258         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 259         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 260         saa7134_track_gpio(dev,in->name);
 261 }
 262
 263 static void tvaudio_setmode(struct saa7134_dev *dev,
 264                             struct saa7134_tvaudio *audio,
 265                             char *note)
 266 {
 267         int acpf, tweak = 0;
 268
 269         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 270                 acpf = 0x19066;
 271         } else {
 272                 acpf = 0x1e000;
 273         }
 274         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 275                 tweak = audio_clock_tweak;
 276
 277         if (note)
 278                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 279                         note,audio->name,
 280                         audio->carr1 / 1000, audio->carr1 % 1000,
 281                         audio->carr2 / 1000, audio->carr2 % 1000,
 282                         acpf, tweak);
 283
 284         acpf += tweak;
 285         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 286         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 287         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 288         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 289
 290         switch (audio->mode) {
 291         case TVAUDIO_FM_MONO:
 292         case TVAUDIO_FM_BG_STEREO:
 293                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 294                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 295                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 296                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 297                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 298                 break;
 299         case TVAUDIO_FM_K_STEREO:
 300                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 301                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 302                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 303                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 304                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 305                 break;
 306         case TVAUDIO_NICAM_FM:
 307                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 308                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 309                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 310                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 311                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 312                 break;
 313         case TVAUDIO_NICAM_AM:
 314                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 315                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 316                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 317                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 318                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 319                 break;
 320         case TVAUDIO_FM_SAT_STEREO:
 321                 /* not implemented (yet) */
 322                 break;
 323         }
 324 }
 325
 326 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 327 {
 328         DECLARE_WAITQUEUE(wait, current);
 329
 330         add_wait_queue(&dev->thread.wq, &wait);
 331         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 332                 if (timeout < 0) {
 333                         set_current_state(TASK_INTERRUPTIBLE);
 334                         schedule();
 335                 } else {
 336 #if 0
 337                         /* hmm, that one doesn't return on wakeup ... */
 338                         msleep_interruptible(timeout);
 339 #else
 340                         set_current_state(TASK_INTERRUPTIBLE);
 341                         schedule_timeout(msecs_to_jiffies(timeout));
 342 #endif
 343                 }
 344         }
 345         remove_wait_queue(&dev->thread.wq, &wait);
 346         return dev->thread.scan1 != dev->thread.scan2;
 347 }
 348
 349 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 350 {
 351         __s32 left,right,value;
 352
 353         if (audio_debug > 1) {
 354                 int i;
 355                 dprintk("debug %d:",scan->carr);
 356                 for (i = -150; i <= 150; i += 30) {
 357                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 358                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 359                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 360                                 return -1;
 361                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 362                         if (0 == i)
 363                                 printk("  #  %6d  # ",value >> 16);
 364                         else
 365                                 printk(" %6d",value >> 16);
 366                 }
 367                 printk("\n");
 368         }
 369
 370         if (dev->tvnorm->id & scan->std) {
 371                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 372                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 373                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 374                         return -1;
 375                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 376
 377                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 378                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 379                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 380                         return -1;
 381                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 382
 383                 left >>= 16;
 384                 right >>= 16;
 385                 value = left > right ? left - right : right - left;
 386                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 387                         scan->carr / 1000, scan->carr % 1000,
 388                         scan->name, value, left, right);
 389         } else {
 390                 value = 0;
 391                 dprintk("skipping %d.%03d MHz [%4s]\n",
 392                         scan->carr / 1000, scan->carr % 1000, scan->name);
 393         }
 394         return value;
 395 }
 396
 397 #if 0
 398 static void sifdebug_dump_regs(struct saa7134_dev *dev)
 399 {
 400         print_regb(AUDIO_STATUS);
 401         print_regb(IDENT_SIF);
 402         print_regb(LEVEL_READOUT1);
 403         print_regb(LEVEL_READOUT2);
 404         print_regb(DCXO_IDENT_CTRL);
 405         print_regb(DEMODULATOR);
 406         print_regb(AGC_GAIN_SELECT);
 407         print_regb(MONITOR_SELECT);
 408         print_regb(FM_DEEMPHASIS);
 409         print_regb(FM_DEMATRIX);
 410         print_regb(SIF_SAMPLE_FREQ);
 411         print_regb(ANALOG_IO_SELECT);
 412 }
 413 #endif
 414
 415 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 416 {
 417         __u32 idp,nicam;
 418         int retval = -1;
 419
 420         switch (audio->mode) {
 421         case TVAUDIO_FM_MONO:
 422                 return V4L2_TUNER_SUB_MONO;
 423         case TVAUDIO_FM_K_STEREO:
 424         case TVAUDIO_FM_BG_STEREO:
 425                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 426                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 427                 if (0x03 == (idp & 0x03))
 428                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 429                 else if (0x05 == (idp & 0x05))
 430                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 431                 else if (0x01 == (idp & 0x01))
 432                         retval = V4L2_TUNER_SUB_MONO;
 433                 break;
 434         case TVAUDIO_FM_SAT_STEREO:
 435                 /* not implemented (yet) */
 436                 break;
 437         case TVAUDIO_NICAM_FM:
 438         case TVAUDIO_NICAM_AM:
 439                 nicam = saa_readb(SAA7134_NICAM_STATUS);
 440                 dprintk("getstereo: nicam=0x%x\n",nicam);
 441                 switch (nicam & 0x0b) {
 442                 case 0x09:
 443                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 444                         break;
 445                 case 0x0a:
 446                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 447                         break;
 448                 case 0x08:
 449                 default:
 450                         retval = V4L2_TUNER_SUB_MONO;
 451                         break;
 452                 }
 453                 break;
 454         }
 455         if (retval != -1)
 456                 dprintk("found audio subchannels:%s%s%s%s\n",
 457                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 458                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 459                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 460                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 461         return retval;
 462 }
 463
 464 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 465                              u32 mode)
 466 {
 467         static char *name[] = {
 468                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 469                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 470                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 471                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 472         };
 473         static u32 fm[] = {
 474                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 475                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 476                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 477                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 478         };
 479         u32 reg;
 480
 481         switch (audio->mode) {
 482         case TVAUDIO_FM_MONO:
 483                 /* nothing to do ... */
 484                 break;
 485         case TVAUDIO_FM_K_STEREO:
 486         case TVAUDIO_FM_BG_STEREO:
 487                 dprintk("setstereo [fm] => %s\n",
 488                         name[ mode % ARRAY_SIZE(name) ]);
 489                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 490                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 491                 break;
 492         case TVAUDIO_FM_SAT_STEREO:
 493         case TVAUDIO_NICAM_AM:
 494         case TVAUDIO_NICAM_FM:
 495                 /* FIXME */
 496                 break;
 497         }
 498         return 0;
 499 }
 500
 501 static int tvaudio_thread(void *data)
 502 {
 503         struct saa7134_dev *dev = data;
 504         int carr_vals[ARRAY_SIZE(mainscan)];
 505         unsigned int i, audio, nscan;
 506         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 507
 508         daemonize("%s", dev->name);
 509         allow_signal(SIGTERM);
 510         for (;;) {
 511                 tvaudio_sleep(dev,-1);
 512                 if (dev->thread.shutdown || signal_pending(current))
 513                         goto done;
 514
 515         restart:
 516                 dev->thread.scan1 = dev->thread.scan2;
 517                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 518                 dev->tvaudio  = NULL;
 519                 tvaudio_init(dev);
 520                 if (dev->ctl_automute)
 521                         dev->automute = 1;
 522                 mute_input_7134(dev);
 523
 524                 /* give the tuner some time */
 525                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 526                         goto restart;
 527
 528                 max1 = 0;
 529                 max2 = 0;
 530                 nscan = 0;
 531                 carrier = 0;
 532                 default_carrier = 0;
 533                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 534                         if (!(dev->tvnorm->id & mainscan[i].std))
 535                                 continue;
 536                         if (!default_carrier)
 537                                 default_carrier = mainscan[i].carr;
 538                         nscan++;
 539                 }
 540
 541                 if (1 == nscan) {
 542                         /* only one candidate -- skip scan ;) */
 543                         max1 = 12345;
 544                         carrier = default_carrier;
 545                 } else {
 546                         /* scan for the main carrier */
 547                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 548                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 549                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 550                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 551                                 if (dev->thread.scan1 != dev->thread.scan2)
 552                                         goto restart;
 553                         }
 554                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 555                                 if (max1 < carr_vals[i]) {
 556                                         max2 = max1;
 557                                         max1 = carr_vals[i];
 558                                         carrier = mainscan[i].carr;
 559                                 } else if (max2 < carr_vals[i]) {
 560                                         max2 = carr_vals[i];
 561                                 }
 562                         }
 563                 }
 564
 565                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 566                         /* found good carrier */
 567                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 568                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 569                                 max1, max2);
 570                         dev->last_carrier = carrier;
 571
 572                 } else if (0 != dev->last_carrier) {
 573                         /* no carrier -- try last detected one as fallback */
 574                         carrier = dev->last_carrier;
 575                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 576                                "using %d.%03d MHz [last detected]\n",
 577                                dev->name, carrier/1000, carrier%1000);
 578
 579                 } else {
 580                         /* no carrier + no fallback -- use default */
 581                         carrier = default_carrier;
 582                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 583                                "using %d.%03d MHz [default]\n",
 584                                dev->name, carrier/1000, carrier%1000);
 585                 }
 586                 tvaudio_setcarrier(dev,carrier,carrier);
 587                 dev->automute = 0;
 588                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 589                 saa7134_tvaudio_setmute(dev);
 590
 591                 /* find the exact tv audio norm */
 592                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 593                         if (dev->tvnorm->id != UNSET &&
 594                             !(dev->tvnorm->id & tvaudio[i].std))
 595                                 continue;
 596                         if (tvaudio[i].carr1 != carrier)
 597                                 continue;
 598
 599                         if (UNSET == audio)
 600                                 audio = i;
 601                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 602                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 603                                 goto restart;
 604                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 605                                 audio = i;
 606                                 break;
 607                         }
 608                 }
 609                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 610                 if (UNSET == audio)
 611                         continue;
 612                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 613                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 614                 dev->tvaudio = &tvaudio[audio];
 615
 616                 lastmode = 42;
 617                 for (;;) {
 618                         if (tvaudio_sleep(dev,5000))
 619                                 goto restart;
 620                         if (dev->thread.shutdown || signal_pending(current))
 621                                 break;
 622                         if (UNSET == dev->thread.mode) {
 623                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 624                                 mode = saa7134_tvaudio_rx2mode(rx);
 625                         } else {
 626                                 mode = dev->thread.mode;
 627                         }
 628                         if (lastmode != mode) {
 629                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 630                                 lastmode = mode;
 631                         }
 632                 }
 633         }
 634
 635  done:
 636         complete_and_exit(&dev->thread.exit, 0);
 637         return 0;
 638 }
 639
 640 /* ------------------------------------------------------------------ */
 641 /* saa7133 / saa7135 code                                             */
 642
 643 static char *stdres[0x20] = {
 644         [0x00] = "no standard detected",
 645         [0x01] = "B/G (in progress)",
 646         [0x02] = "D/K (in progress)",
 647         [0x03] = "M (in progress)",
 648
 649         [0x04] = "B/G A2",
 650         [0x05] = "B/G NICAM",
 651         [0x06] = "D/K A2 (1)",
 652         [0x07] = "D/K A2 (2)",
 653         [0x08] = "D/K A2 (3)",
 654         [0x09] = "D/K NICAM",
 655         [0x0a] = "L NICAM",
 656         [0x0b] = "I NICAM",
 657
 658         [0x0c] = "M Korea",
 659         [0x0d] = "M BTSC ",
 660         [0x0e] = "M EIAJ",
 661
 662         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 663         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 664         [0x11] = "FM radio / IF sel / 50 deemp",
 665         [0x12] = "FM radio / IF sel / 75 deemp",
 666
 667         [0x13 ... 0x1e ] = "unknown",
 668         [0x1f] = "??? [in progress]",
 669 };
 670
 671 #define DSP_RETRY 32
 672 #define DSP_DELAY 16
 673
 674 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 675 {
 676         int state, count = DSP_RETRY;
 677
 678         state = saa_readb(SAA7135_DSP_RWSTATE);
 679         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 680                 printk("%s: dsp access error\n",dev->name);
 681                 /* FIXME: send ack ... */
 682                 return -EIO;
 683         }
 684         while (0 == (state & bit)) {
 685                 if (unlikely(0 == count)) {
 686                         printk("%s: dsp access wait timeout [bit=%s]\n",
 687                                dev->name,
 688                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 689                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 690                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 691                                "???");
 692                         return -EIO;
 693                 }
 694                 saa_wait(DSP_DELAY);
 695                 state = saa_readb(SAA7135_DSP_RWSTATE);
 696                 count--;
 697         }
 698         return 0;
 699 }
 700
 701 #if 0
 702 static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value)
 703 {
 704         int err;
 705
 706         d2printk("dsp read reg 0x%x\n", reg<<2);
 707         saa_readl(reg);
 708         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB);
 709         if (err < 0)
 710                 return err;
 711         *value = saa_readl(reg);
 712         d2printk("dsp read   => 0x%06x\n", *value & 0xffffff);
 713         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA);
 714         if (err < 0)
 715                 return err;
 716         return 0;
 717 }
 718 #endif
 719
 720 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 721 {
 722         int err;
 723
 724         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 725         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 726         if (err < 0)
 727                 return err;
 728         saa_writel(reg,value);
 729         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 730         if (err < 0)
 731                 return err;
 732         return 0;
 733 }
 734
 735 static int getstereo_7133(struct saa7134_dev *dev)
 736 {
 737         int retval = V4L2_TUNER_SUB_MONO;
 738         u32 value;
 739
 740         value = saa_readl(0x528 >> 2);
 741         if (value & 0x20)
 742                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 743         if (value & 0x40)
 744                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 745         return retval;
 746 }
 747
 748 static int mute_input_7133(struct saa7134_dev *dev)
 749 {
 750         u32 reg = 0;
 751         int mask;
 752
 753         switch (dev->input->amux) {
 754         case TV:
 755                 reg = 0x02;
 756                 break;
 757         case LINE1:
 758                 reg = 0x00;
 759                 break;
 760         case LINE2:
 761         case LINE2_LEFT:
 762                 reg = 0x01;
 763                 break;
 764         }
 765         if (dev->ctl_mute)
 766                 reg = 0x07;
 767         saa_writel(0x594 >> 2, reg);
 768
 769         /* switch gpio-connected external audio mux */
 770         if (0 != card(dev).gpiomask) {
 771                 mask = card(dev).gpiomask;
 772                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 773                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, dev->input->gpio);
 774                 saa7134_track_gpio(dev,dev->input->name);
 775         }
 776         return 0;
 777 }
 778
 779 static int tvaudio_thread_ddep(void *data)
 780 {
 781         struct saa7134_dev *dev = data;
 782         u32 value, norms, clock;
 783
 784         daemonize("%s", dev->name);
 785         allow_signal(SIGTERM);
 786
 787         clock = saa7134_boards[dev->board].audio_clock;
 788         if (UNSET != audio_clock_override)
 789                 clock = audio_clock_override;
 790         saa_writel(0x598 >> 2, clock);
 791
 792         /* unmute */
 793         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 794         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 795
 796         for (;;) {
 797                 tvaudio_sleep(dev,-1);
 798                 if (dev->thread.shutdown || signal_pending(current))
 799                         goto done;
 800
 801         restart:
 802                 dev->thread.scan1 = dev->thread.scan2;
 803                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 804
 805                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 806                         /* insmod option override */
 807                         norms = (audio_ddep << 2) | 0x01;
 808                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 809                 } else if (&card(dev).radio == dev->input) {
 810                         dprintk("FM Radio\n");
 811                         norms = (0x0f << 2) | 0x01;
 812                 } else {
 813                         /* (let chip) scan for sound carrier */
 814                         norms = 0;
 815                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 816                                 dprintk("PAL scan\n");
 817                                 norms |= 0x2c; /* B/G + D/K + I */
 818                         }
 819                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 820                                 dprintk("NTSC scan\n");
 821                                 norms |= 0x40; /* M */
 822                         }
 823                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 824                                 dprintk("SECAM scan\n");
 825                                 norms |= 0x18; /* L + D/K */
 826                         }
 827                         if (0 == norms)
 828                                 norms = 0x7c; /* all */
 829                         dprintk("scanning:%s%s%s%s%s\n",
 830                                 (norms & 0x04) ? " B/G"  : "",
 831                                 (norms & 0x08) ? " D/K"  : "",
 832                                 (norms & 0x10) ? " L/L'" : "",
 833                                 (norms & 0x20) ? " I"    : "",
 834                                 (norms & 0x40) ? " M"    : "");
 835                 }
 836
 837                 /* kick automatic standard detection */
 838                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 839                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 840
 841                 /* setup crossbars */
 842                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 843                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 844
 845                 if (tvaudio_sleep(dev,3000))
 846                         goto restart;
 847                 value = saa_readl(0x528 >> 2) & 0xffffff;
 848
 849                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 850                         value, stdres[value & 0x1f],
 851                         (value & 0x000020) ? ",stereo" : "",
 852                         (value & 0x000040) ? ",dual"   : "");
 853                 dprintk("detailed status: "
 854                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 855                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 856                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 857                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 858                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 859
 860                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 861                         (value & 0x001000) ? " SAP carrier "            : "",
 862                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 863                         (value & 0x004000) ? " SAP noise mute "         : "",
 864                         (value & 0x008000) ? " VDSP "                   : "",
 865
 866                         (value & 0x010000) ? " NICST "                  : "",
 867                         (value & 0x020000) ? " NICDU "                  : "",
 868                         (value & 0x040000) ? " NICAM muted "            : "",
 869                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 870
 871                         (value & 0x100000) ? " init done "              : "");
 872         }
 873
 874  done:
 875         complete_and_exit(&dev->thread.exit, 0);
 876         return 0;
 877 }
 878
 879 /* ------------------------------------------------------------------ */
 880 /* common stuff + external entry points                               */
 881
 882 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 883 {
 884         int i2s_format;
 885
 886         if (!card_is_empress(dev))
 887                 return;
 888         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 889
 890         /* enable I2S audio output for the mpeg encoder */
 891         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 892         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 893         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 894         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 895 }
 896
 897 int saa7134_tvaudio_rx2mode(u32 rx)
 898 {
 899         u32 mode;
 900
 901         mode = V4L2_TUNER_MODE_MONO;
 902         if (rx & V4L2_TUNER_SUB_STEREO)
 903                 mode = V4L2_TUNER_MODE_STEREO;
 904         else if (rx & V4L2_TUNER_SUB_LANG1)
 905                 mode = V4L2_TUNER_MODE_LANG1;
 906         else if (rx & V4L2_TUNER_SUB_LANG2)
 907                 mode = V4L2_TUNER_MODE_LANG2;
 908         return mode;
 909 }
 910
 911 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 912 {
 913         switch (dev->pci->device) {
 914         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 915         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 916                 mute_input_7134(dev);
 917                 break;
 918         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 919         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 920                 mute_input_7133(dev);
 921                 break;
 922         }
 923 }
 924
 925 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 926                               struct saa7134_input *in)
 927 {
 928         dev->input = in;
 929         switch (dev->pci->device) {
 930         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 931         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 932                 mute_input_7134(dev);
 933                 break;
 934         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 935         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 936                 mute_input_7133(dev);
 937                 break;
 938         }
 939         saa7134_enable_i2s(dev);
 940 }
 941
 942 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 943 {
 944         switch (dev->pci->device) {
 945         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 946                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 947                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 948                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 949                 break;
 950         }
 951 }
 952
 953 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 954 {
 955         int retval = V4L2_TUNER_SUB_MONO;
 956
 957         switch (dev->pci->device) {
 958         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 959                 if (dev->tvaudio)
 960                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 961                 break;
 962         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 963         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 964                 retval = getstereo_7133(dev);
 965                 break;
 966         }
 967         return retval;
 968 }
 969
 970 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 971 {
 972         DECLARE_MUTEX_LOCKED(sem);
 973         int (*my_thread)(void *data) = NULL;
 974
 975         switch (dev->pci->device) {
 976         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 977                 my_thread = tvaudio_thread;
 978                 break;
 979         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 980         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 981                 my_thread = tvaudio_thread_ddep;
 982                 break;
 983         }
 984
 985         dev->thread.pid = -1;
 986         if (my_thread) {
 987                 /* start tvaudio thread */
 988                 init_waitqueue_head(&dev->thread.wq);
 989                 init_completion(&dev->thread.exit);
 990                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 991                 if (dev->thread.pid < 0)
 992                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 993                                dev->name);
 994                 saa7134_tvaudio_do_scan(dev);
 995         }
 996
 997         saa7134_enable_i2s(dev);
 998         return 0;
 999 }
1000
1001 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1002 {
1003         /* shutdown tvaudio thread */
1004         if (dev->thread.pid >= 0) {
1005                 dev->thread.shutdown = 1;
1006                 wake_up_interruptible(&dev->thread.wq);
1007                 wait_for_completion(&dev->thread.exit);
1008         }
1009         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1010         return 0;
1011 }
1012
1013 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1014 {
1015         if (dev->thread.pid >= 0) {
1016                 dev->thread.mode = UNSET;
1017                 dev->thread.scan2++;
1018                 wake_up_interruptible(&dev->thread.wq);
1019         } else {
1020                 dev->automute = 0;
1021                 saa7134_tvaudio_setmute(dev);
1022         }
1023         return 0;
1024 }
1025
1026 /* ----------------------------------------------------------- */
1027 /*
1028  * Local variables:
1029  * c-basic-offset: 8
1030  * End:
1031  */