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

   1 /*
   2  * $Id: saa7134-tvaudio.c,v 1.25 2005/06/07 19:00:38 nsh 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         // frame locked audio was reported not to be reliable
 185         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x02);
 186
 187         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 188         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 189         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 190         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 191 }
 192
 193 static u32 tvaudio_carr2reg(u32 carrier)
 194 {
 195         u64 a = carrier;
 196
 197         a <<= 24;
 198         do_div(a,12288);
 199         return a;
 200 }
 201
 202 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 203                                int primary, int secondary)
 204 {
 205         if (-1 == secondary)
 206                 secondary = primary;
 207         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 208         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 209 }
 210
 211 static void mute_input_7134(struct saa7134_dev *dev)
 212 {
 213         unsigned int mute;
 214         struct saa7134_input *in;
 215         int ausel=0, ics=0, ocs=0;
 216         int mask;
 217
 218         /* look what is to do ... */
 219         in   = dev->input;
 220         mute = (dev->ctl_mute ||
 221                 (dev->automute  &&  (&card(dev).radio) != in));
 222         if (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device &&
 223             card(dev).mute.name) {
 224                 /* 7130 - we'll mute using some unconnected audio input */
 225                 if (mute)
 226                         in = &card(dev).mute;
 227         }
 228         if (dev->hw_mute  == mute &&
 229             dev->hw_input == in) {
 230                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 231                         mute,in->name);
 232                 return;
 233         }
 234
 235         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 236                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 237         dev->hw_mute  = mute;
 238         dev->hw_input = in;
 239
 240         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 241                 /* 7134 mute */
 242                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xbf : 0xbb);
 243
 244         /* switch internal audio mux */
 245         switch (in->amux) {
 246         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 247         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 248         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 249         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 250         }
 251         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 252         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 253         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 254         // for oss, we need to change the clock configuration
 255         if (in->amux == TV)
 256                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 257         else
 258                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 259
 260         /* switch gpio-connected external audio mux */
 261         if (0 == card(dev).gpiomask)
 262                 return;
 263         mask = card(dev).gpiomask;
 264         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 265         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 266         saa7134_track_gpio(dev,in->name);
 267 }
 268
 269 static void tvaudio_setmode(struct saa7134_dev *dev,
 270                             struct saa7134_tvaudio *audio,
 271                             char *note)
 272 {
 273         int acpf, tweak = 0;
 274
 275         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 276                 acpf = 0x19066;
 277         } else {
 278                 acpf = 0x1e000;
 279         }
 280         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 281                 tweak = audio_clock_tweak;
 282
 283         if (note)
 284                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 285                         note,audio->name,
 286                         audio->carr1 / 1000, audio->carr1 % 1000,
 287                         audio->carr2 / 1000, audio->carr2 % 1000,
 288                         acpf, tweak);
 289
 290         acpf += tweak;
 291         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 292         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 293         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 294         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 295
 296         switch (audio->mode) {
 297         case TVAUDIO_FM_MONO:
 298         case TVAUDIO_FM_BG_STEREO:
 299                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 300                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 301                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 302                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 303                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 304                 break;
 305         case TVAUDIO_FM_K_STEREO:
 306                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 307                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 308                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 309                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 310                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 311                 break;
 312         case TVAUDIO_NICAM_FM:
 313                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 314                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 315                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 316                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 317                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 318                 break;
 319         case TVAUDIO_NICAM_AM:
 320                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 321                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 322                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 323                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 324                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 325                 break;
 326         case TVAUDIO_FM_SAT_STEREO:
 327                 /* not implemented (yet) */
 328                 break;
 329         }
 330 }
 331
 332 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 333 {
 334         DECLARE_WAITQUEUE(wait, current);
 335
 336         add_wait_queue(&dev->thread.wq, &wait);
 337         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 338                 if (timeout < 0) {
 339                         set_current_state(TASK_INTERRUPTIBLE);
 340                         schedule();
 341                 } else {
 342 #if 0
 343                         /* hmm, that one doesn't return on wakeup ... */
 344                         msleep_interruptible(timeout);
 345 #else
 346                         set_current_state(TASK_INTERRUPTIBLE);
 347                         schedule_timeout(msecs_to_jiffies(timeout));
 348 #endif
 349                 }
 350         }
 351         remove_wait_queue(&dev->thread.wq, &wait);
 352         return dev->thread.scan1 != dev->thread.scan2;
 353 }
 354
 355 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 356 {
 357         __s32 left,right,value;
 358
 359         if (audio_debug > 1) {
 360                 int i;
 361                 dprintk("debug %d:",scan->carr);
 362                 for (i = -150; i <= 150; i += 30) {
 363                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 364                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 365                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 366                                 return -1;
 367                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 368                         if (0 == i)
 369                                 printk("  #  %6d  # ",value >> 16);
 370                         else
 371                                 printk(" %6d",value >> 16);
 372                 }
 373                 printk("\n");
 374         }
 375
 376         if (dev->tvnorm->id & scan->std) {
 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                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 382
 383                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 384                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 385                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 386                         return -1;
 387                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 388
 389                 left >>= 16;
 390                 right >>= 16;
 391                 value = left > right ? left - right : right - left;
 392                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 393                         scan->carr / 1000, scan->carr % 1000,
 394                         scan->name, value, left, right);
 395         } else {
 396                 value = 0;
 397                 dprintk("skipping %d.%03d MHz [%4s]\n",
 398                         scan->carr / 1000, scan->carr % 1000, scan->name);
 399         }
 400         return value;
 401 }
 402
 403 #if 0
 404 static void sifdebug_dump_regs(struct saa7134_dev *dev)
 405 {
 406         print_regb(AUDIO_STATUS);
 407         print_regb(IDENT_SIF);
 408         print_regb(LEVEL_READOUT1);
 409         print_regb(LEVEL_READOUT2);
 410         print_regb(DCXO_IDENT_CTRL);
 411         print_regb(DEMODULATOR);
 412         print_regb(AGC_GAIN_SELECT);
 413         print_regb(MONITOR_SELECT);
 414         print_regb(FM_DEEMPHASIS);
 415         print_regb(FM_DEMATRIX);
 416         print_regb(SIF_SAMPLE_FREQ);
 417         print_regb(ANALOG_IO_SELECT);
 418 }
 419 #endif
 420
 421 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 422 {
 423         __u32 idp,nicam;
 424         int retval = -1;
 425
 426         switch (audio->mode) {
 427         case TVAUDIO_FM_MONO:
 428                 return V4L2_TUNER_SUB_MONO;
 429         case TVAUDIO_FM_K_STEREO:
 430         case TVAUDIO_FM_BG_STEREO:
 431                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 432                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 433                 if (0x03 == (idp & 0x03))
 434                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 435                 else if (0x05 == (idp & 0x05))
 436                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 437                 else if (0x01 == (idp & 0x01))
 438                         retval = V4L2_TUNER_SUB_MONO;
 439                 break;
 440         case TVAUDIO_FM_SAT_STEREO:
 441                 /* not implemented (yet) */
 442                 break;
 443         case TVAUDIO_NICAM_FM:
 444         case TVAUDIO_NICAM_AM:
 445                 nicam = saa_readb(SAA7134_NICAM_STATUS);
 446                 dprintk("getstereo: nicam=0x%x\n",nicam);
 447                 switch (nicam & 0x0b) {
 448                 case 0x08:
 449                         retval = V4L2_TUNER_SUB_MONO;
 450                         break;
 451                 case 0x09:
 452                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 453                         break;
 454                 case 0x0a:
 455                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 456                         break;
 457                 }
 458                 break;
 459         }
 460         if (retval != -1)
 461                 dprintk("found audio subchannels:%s%s%s%s\n",
 462                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 463                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 464                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 465                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 466         return retval;
 467 }
 468
 469 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 470                              u32 mode)
 471 {
 472         static char *name[] = {
 473                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 474                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 475                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 476                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 477         };
 478         static u32 fm[] = {
 479                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 480                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 481                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 482                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 483         };
 484         u32 reg;
 485
 486         switch (audio->mode) {
 487         case TVAUDIO_FM_MONO:
 488                 /* nothing to do ... */
 489                 break;
 490         case TVAUDIO_FM_K_STEREO:
 491         case TVAUDIO_FM_BG_STEREO:
 492                 dprintk("setstereo [fm] => %s\n",
 493                         name[ mode % ARRAY_SIZE(name) ]);
 494                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 495                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 496                 break;
 497         case TVAUDIO_FM_SAT_STEREO:
 498         case TVAUDIO_NICAM_AM:
 499         case TVAUDIO_NICAM_FM:
 500                 /* FIXME */
 501                 break;
 502         }
 503         return 0;
 504 }
 505
 506 static int tvaudio_thread(void *data)
 507 {
 508         struct saa7134_dev *dev = data;
 509         int carr_vals[ARRAY_SIZE(mainscan)];
 510         unsigned int i, audio, nscan;
 511         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 512
 513         daemonize("%s", dev->name);
 514         allow_signal(SIGTERM);
 515         for (;;) {
 516                 tvaudio_sleep(dev,-1);
 517                 if (dev->thread.shutdown || signal_pending(current))
 518                         goto done;
 519
 520         restart:
 521                 dev->thread.scan1 = dev->thread.scan2;
 522                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 523                 dev->tvaudio  = NULL;
 524                 tvaudio_init(dev);
 525                 if (dev->ctl_automute)
 526                         dev->automute = 1;
 527                 mute_input_7134(dev);
 528
 529                 /* give the tuner some time */
 530                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 531                         goto restart;
 532
 533                 max1 = 0;
 534                 max2 = 0;
 535                 nscan = 0;
 536                 carrier = 0;
 537                 default_carrier = 0;
 538                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 539                         if (!(dev->tvnorm->id & mainscan[i].std))
 540                                 continue;
 541                         if (!default_carrier)
 542                                 default_carrier = mainscan[i].carr;
 543                         nscan++;
 544                 }
 545
 546                 if (1 == nscan) {
 547                         /* only one candidate -- skip scan ;) */
 548                         max1 = 12345;
 549                         carrier = default_carrier;
 550                 } else {
 551                         /* scan for the main carrier */
 552                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 553                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 554                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 555                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 556                                 if (dev->thread.scan1 != dev->thread.scan2)
 557                                         goto restart;
 558                         }
 559                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 560                                 if (max1 < carr_vals[i]) {
 561                                         max2 = max1;
 562                                         max1 = carr_vals[i];
 563                                         carrier = mainscan[i].carr;
 564                                 } else if (max2 < carr_vals[i]) {
 565                                         max2 = carr_vals[i];
 566                                 }
 567                         }
 568                 }
 569
 570                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 571                         /* found good carrier */
 572                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 573                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 574                                 max1, max2);
 575                         dev->last_carrier = carrier;
 576
 577                 } else if (0 != dev->last_carrier) {
 578                         /* no carrier -- try last detected one as fallback */
 579                         carrier = dev->last_carrier;
 580                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 581                                "using %d.%03d MHz [last detected]\n",
 582                                dev->name, carrier/1000, carrier%1000);
 583
 584                 } else {
 585                         /* no carrier + no fallback -- use default */
 586                         carrier = default_carrier;
 587                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 588                                "using %d.%03d MHz [default]\n",
 589                                dev->name, carrier/1000, carrier%1000);
 590                 }
 591                 tvaudio_setcarrier(dev,carrier,carrier);
 592                 dev->automute = 0;
 593                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 594                 saa7134_tvaudio_setmute(dev);
 595
 596                 /* find the exact tv audio norm */
 597                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 598                         if (dev->tvnorm->id != UNSET &&
 599                             !(dev->tvnorm->id & tvaudio[i].std))
 600                                 continue;
 601                         if (tvaudio[i].carr1 != carrier)
 602                                 continue;
 603
 604                         if (UNSET == audio)
 605                                 audio = i;
 606                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 607                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 608                                 goto restart;
 609                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 610                                 audio = i;
 611                                 break;
 612                         }
 613                 }
 614                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 615                 if (UNSET == audio)
 616                         continue;
 617                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 618                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 619                 dev->tvaudio = &tvaudio[audio];
 620
 621                 lastmode = 42;
 622                 for (;;) {
 623                         if (tvaudio_sleep(dev,5000))
 624                                 goto restart;
 625                         if (dev->thread.shutdown || signal_pending(current))
 626                                 break;
 627                         if (UNSET == dev->thread.mode) {
 628                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 629                                 mode = saa7134_tvaudio_rx2mode(rx);
 630                         } else {
 631                                 mode = dev->thread.mode;
 632                         }
 633                         if (lastmode != mode) {
 634                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 635                                 lastmode = mode;
 636                         }
 637                 }
 638         }
 639
 640  done:
 641         complete_and_exit(&dev->thread.exit, 0);
 642         return 0;
 643 }
 644
 645 /* ------------------------------------------------------------------ */
 646 /* saa7133 / saa7135 code                                             */
 647
 648 static char *stdres[0x20] = {
 649         [0x00] = "no standard detected",
 650         [0x01] = "B/G (in progress)",
 651         [0x02] = "D/K (in progress)",
 652         [0x03] = "M (in progress)",
 653
 654         [0x04] = "B/G A2",
 655         [0x05] = "B/G NICAM",
 656         [0x06] = "D/K A2 (1)",
 657         [0x07] = "D/K A2 (2)",
 658         [0x08] = "D/K A2 (3)",
 659         [0x09] = "D/K NICAM",
 660         [0x0a] = "L NICAM",
 661         [0x0b] = "I NICAM",
 662
 663         [0x0c] = "M Korea",
 664         [0x0d] = "M BTSC ",
 665         [0x0e] = "M EIAJ",
 666
 667         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 668         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 669         [0x11] = "FM radio / IF sel / 50 deemp",
 670         [0x12] = "FM radio / IF sel / 75 deemp",
 671
 672         [0x13 ... 0x1e ] = "unknown",
 673         [0x1f] = "??? [in progress]",
 674 };
 675
 676 #define DSP_RETRY 32
 677 #define DSP_DELAY 16
 678
 679 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 680 {
 681         int state, count = DSP_RETRY;
 682
 683         state = saa_readb(SAA7135_DSP_RWSTATE);
 684         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 685                 printk("%s: dsp access error\n",dev->name);
 686                 /* FIXME: send ack ... */
 687                 return -EIO;
 688         }
 689         while (0 == (state & bit)) {
 690                 if (unlikely(0 == count)) {
 691                         printk("%s: dsp access wait timeout [bit=%s]\n",
 692                                dev->name,
 693                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 694                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 695                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 696                                "???");
 697                         return -EIO;
 698                 }
 699                 saa_wait(DSP_DELAY);
 700                 state = saa_readb(SAA7135_DSP_RWSTATE);
 701                 count--;
 702         }
 703         return 0;
 704 }
 705
 706 #if 0
 707 static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value)
 708 {
 709         int err;
 710
 711         d2printk("dsp read reg 0x%x\n", reg<<2);
 712         saa_readl(reg);
 713         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB);
 714         if (err < 0)
 715                 return err;
 716         *value = saa_readl(reg);
 717         d2printk("dsp read   => 0x%06x\n", *value & 0xffffff);
 718         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA);
 719         if (err < 0)
 720                 return err;
 721         return 0;
 722 }
 723 #endif
 724
 725 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 726 {
 727         int err;
 728
 729         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 730         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 731         if (err < 0)
 732                 return err;
 733         saa_writel(reg,value);
 734         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 735         if (err < 0)
 736                 return err;
 737         return 0;
 738 }
 739
 740 static int getstereo_7133(struct saa7134_dev *dev)
 741 {
 742         int retval = V4L2_TUNER_SUB_MONO;
 743         u32 value;
 744
 745         value = saa_readl(0x528 >> 2);
 746         if (value & 0x20)
 747                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 748         if (value & 0x40)
 749                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 750         return retval;
 751 }
 752
 753 static int mute_input_7133(struct saa7134_dev *dev)
 754 {
 755         u32 reg = 0;
 756         int mask;
 757
 758         switch (dev->input->amux) {
 759         case TV:
 760                 reg = 0x02;
 761                 break;
 762         case LINE1:
 763                 reg = 0x00;
 764                 break;
 765         case LINE2:
 766         case LINE2_LEFT:
 767                 reg = 0x01;
 768                 break;
 769         }
 770         if (dev->ctl_mute)
 771                 reg = 0x07;
 772         saa_writel(0x594 >> 2, reg);
 773
 774         /* switch gpio-connected external audio mux */
 775         if (0 != card(dev).gpiomask) {
 776                 mask = card(dev).gpiomask;
 777                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 778                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, dev->input->gpio);
 779                 saa7134_track_gpio(dev,dev->input->name);
 780         }
 781         return 0;
 782 }
 783
 784 static int tvaudio_thread_ddep(void *data)
 785 {
 786         struct saa7134_dev *dev = data;
 787         u32 value, norms, clock;
 788
 789         daemonize("%s", dev->name);
 790         allow_signal(SIGTERM);
 791
 792         clock = saa7134_boards[dev->board].audio_clock;
 793         if (UNSET != audio_clock_override)
 794                 clock = audio_clock_override;
 795         saa_writel(0x598 >> 2, clock);
 796
 797         /* unmute */
 798         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 799         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 800
 801         for (;;) {
 802                 tvaudio_sleep(dev,-1);
 803                 if (dev->thread.shutdown || signal_pending(current))
 804                         goto done;
 805
 806         restart:
 807                 dev->thread.scan1 = dev->thread.scan2;
 808                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 809
 810                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 811                         /* insmod option override */
 812                         norms = (audio_ddep << 2) | 0x01;
 813                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 814                 } else if (&card(dev).radio == dev->input) {
 815                         dprintk("FM Radio\n");
 816                         norms = (0x0f << 2) | 0x01;
 817                 } else {
 818                         /* (let chip) scan for sound carrier */
 819                         norms = 0;
 820                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 821                                 dprintk("PAL scan\n");
 822                                 norms |= 0x2c; /* B/G + D/K + I */
 823                         }
 824                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 825                                 dprintk("NTSC scan\n");
 826                                 norms |= 0x40; /* M */
 827                         }
 828                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 829                                 dprintk("SECAM scan\n");
 830                                 norms |= 0x18; /* L + D/K */
 831                         }
 832                         if (0 == norms)
 833                                 norms = 0x7c; /* all */
 834                         dprintk("scanning:%s%s%s%s%s\n",
 835                                 (norms & 0x04) ? " B/G"  : "",
 836                                 (norms & 0x08) ? " D/K"  : "",
 837                                 (norms & 0x10) ? " L/L'" : "",
 838                                 (norms & 0x20) ? " I"    : "",
 839                                 (norms & 0x40) ? " M"    : "");
 840                 }
 841
 842                 /* kick automatic standard detection */
 843                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 844                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 845
 846                 /* setup crossbars */
 847                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 848                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 849
 850                 if (tvaudio_sleep(dev,3000))
 851                         goto restart;
 852                 value = saa_readl(0x528 >> 2) & 0xffffff;
 853
 854                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 855                         value, stdres[value & 0x1f],
 856                         (value & 0x000020) ? ",stereo" : "",
 857                         (value & 0x000040) ? ",dual"   : "");
 858                 dprintk("detailed status: "
 859                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 860                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 861                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 862                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 863                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 864
 865                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 866                         (value & 0x001000) ? " SAP carrier "            : "",
 867                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 868                         (value & 0x004000) ? " SAP noise mute "         : "",
 869                         (value & 0x008000) ? " VDSP "                   : "",
 870
 871                         (value & 0x010000) ? " NICST "                  : "",
 872                         (value & 0x020000) ? " NICDU "                  : "",
 873                         (value & 0x040000) ? " NICAM muted "            : "",
 874                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 875
 876                         (value & 0x100000) ? " init done "              : "");
 877         }
 878
 879  done:
 880         complete_and_exit(&dev->thread.exit, 0);
 881         return 0;
 882 }
 883
 884 /* ------------------------------------------------------------------ */
 885 /* common stuff + external entry points                               */
 886
 887 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 888 {
 889         int i2s_format;
 890
 891         if (!card_is_empress(dev))
 892                 return;
 893         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 894
 895         /* enable I2S audio output for the mpeg encoder */
 896         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 897         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 898         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 899         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 900 }
 901
 902 int saa7134_tvaudio_rx2mode(u32 rx)
 903 {
 904         u32 mode;
 905
 906         mode = V4L2_TUNER_MODE_MONO;
 907         if (rx & V4L2_TUNER_SUB_STEREO)
 908                 mode = V4L2_TUNER_MODE_STEREO;
 909         else if (rx & V4L2_TUNER_SUB_LANG1)
 910                 mode = V4L2_TUNER_MODE_LANG1;
 911         else if (rx & V4L2_TUNER_SUB_LANG2)
 912                 mode = V4L2_TUNER_MODE_LANG2;
 913         return mode;
 914 }
 915
 916 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 917 {
 918         switch (dev->pci->device) {
 919         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 920         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 921                 mute_input_7134(dev);
 922                 break;
 923         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 924         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 925                 mute_input_7133(dev);
 926                 break;
 927         }
 928 }
 929
 930 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 931                               struct saa7134_input *in)
 932 {
 933         dev->input = in;
 934         switch (dev->pci->device) {
 935         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 936         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 937                 mute_input_7134(dev);
 938                 break;
 939         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 940         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 941                 mute_input_7133(dev);
 942                 break;
 943         }
 944         saa7134_enable_i2s(dev);
 945 }
 946
 947 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 948 {
 949         switch (dev->pci->device) {
 950         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 951                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 952                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 953                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 954                 break;
 955         }
 956 }
 957
 958 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 959 {
 960         int retval = V4L2_TUNER_SUB_MONO;
 961
 962         switch (dev->pci->device) {
 963         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 964                 if (dev->tvaudio)
 965                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 966                 break;
 967         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 968         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 969                 retval = getstereo_7133(dev);
 970                 break;
 971         }
 972         return retval;
 973 }
 974
 975 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 976 {
 977         DECLARE_MUTEX_LOCKED(sem);
 978         int (*my_thread)(void *data) = NULL;
 979
 980         switch (dev->pci->device) {
 981         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 982                 my_thread = tvaudio_thread;
 983                 break;
 984         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 985         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 986                 my_thread = tvaudio_thread_ddep;
 987                 break;
 988         }
 989
 990         dev->thread.pid = -1;
 991         if (my_thread) {
 992                 /* start tvaudio thread */
 993                 init_waitqueue_head(&dev->thread.wq);
 994                 init_completion(&dev->thread.exit);
 995                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 996                 if (dev->thread.pid < 0)
 997                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 998                                dev->name);
 999                 saa7134_tvaudio_do_scan(dev);
1000         }
1001
1002         saa7134_enable_i2s(dev);
1003         return 0;
1004 }
1005
1006 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1007 {
1008         /* shutdown tvaudio thread */
1009         if (dev->thread.pid >= 0) {
1010                 dev->thread.shutdown = 1;
1011                 wake_up_interruptible(&dev->thread.wq);
1012                 wait_for_completion(&dev->thread.exit);
1013         }
1014         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1015         return 0;
1016 }
1017
1018 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1019 {
1020         if (dev->thread.pid >= 0) {
1021                 dev->thread.mode = UNSET;
1022                 dev->thread.scan2++;
1023                 wake_up_interruptible(&dev->thread.wq);
1024         } else {
1025                 dev->automute = 0;
1026                 saa7134_tvaudio_setmute(dev);
1027         }
1028         return 0;
1029 }
1030
1031 /* ----------------------------------------------------------- */
1032 /*
1033  * Local variables:
1034  * c-basic-offset: 8
1035  * End:
1036  */