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

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * tv audio decoder (fm stereo, nicam, ...)
   5  *
   6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/kernel.h>
  27 #include <linux/kthread.h>
  28 #include <linux/slab.h>
  29 #include <linux/delay.h>
  30 #include <linux/freezer.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;
  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;
  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;
  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 = "MN",
  76                 .std  = V4L2_STD_MN,
  77                 .carr = 4500,
  78         },{
  79                 .name = "BGH",
  80                 .std  = V4L2_STD_B | V4L2_STD_GH,
  81                 .carr = 5500,
  82         },{
  83                 .name = "I",
  84                 .std  = V4L2_STD_PAL_I,
  85                 .carr = 6000,
  86         },{
  87                 .name = "DKL",
  88                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  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_BG,
  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_DK,
 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_DK,
 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_DK,
 115                 .carr1         = 6500,
 116                 .carr2         = 5742,
 117                 .mode          = TVAUDIO_FM_BG_STEREO,
 118         },{
 119                 .name          = "PAL-B/G NICAM",
 120                 .std           = V4L2_STD_PAL_BG,
 121                 .carr1         = 5500,
 122                 .carr2         = 5850,
 123                 .mode          = TVAUDIO_NICAM_FM,
 124         },{
 125                 .name          = "PAL-I NICAM",
 126                 .std           = V4L2_STD_PAL_I,
 127                 .carr1         = 6000,
 128                 .carr2         = 6552,
 129                 .mode          = TVAUDIO_NICAM_FM,
 130         },{
 131                 .name          = "PAL-D/K NICAM",
 132                 .std           = V4L2_STD_PAL_DK,
 133                 .carr1         = 6500,
 134                 .carr2         = 5850,
 135                 .mode          = TVAUDIO_NICAM_FM,
 136         },{
 137                 .name          = "SECAM-L NICAM",
 138                 .std           = V4L2_STD_SECAM_L,
 139                 .carr1         = 6500,
 140                 .carr2         = 5850,
 141                 .mode          = TVAUDIO_NICAM_AM,
 142         },{
 143                 .name          = "SECAM-D/K NICAM",
 144                 .std           = V4L2_STD_SECAM_DK,
 145                 .carr1         = 6500,
 146                 .carr2         = 5850,
 147                 .mode          = TVAUDIO_NICAM_FM,
 148         },{
 149                 .name          = "NTSC-A2 FM-stereo",
 150                 .std           = V4L2_STD_NTSC,
 151                 .carr1         = 4500,
 152                 .carr2         = 4724,
 153                 .mode          = TVAUDIO_FM_K_STEREO,
 154         },{
 155                 .name          = "NTSC-M",
 156                 .std           = V4L2_STD_NTSC,
 157                 .carr1         = 4500,
 158                 .carr2         = -1,
 159                 .mode          = TVAUDIO_FM_MONO,
 160         }
 161 };
 162 #define TVAUDIO ARRAY_SIZE(tvaudio)
 163
 164 /* ------------------------------------------------------------------ */
 165
 166 static u32 tvaudio_carr2reg(u32 carrier)
 167 {
 168         u64 a = carrier;
 169
 170         a <<= 24;
 171         do_div(a,12288);
 172         return a;
 173 }
 174
 175 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 176                                int primary, int secondary)
 177 {
 178         if (-1 == secondary)
 179                 secondary = primary;
 180         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 181         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 182 }
 183
 184 #define SAA7134_MUTE_MASK 0xbb
 185 #define SAA7134_MUTE_ANALOG 0x04
 186 #define SAA7134_MUTE_I2S 0x40
 187
 188 static void mute_input_7134(struct saa7134_dev *dev)
 189 {
 190         unsigned int mute;
 191         struct saa7134_input *in;
 192         int ausel=0, ics=0, ocs=0;
 193         int mask;
 194
 195         /* look what is to do ... */
 196         in   = dev->input;
 197         mute = (dev->ctl_mute ||
 198                 (dev->automute  &&  (&card(dev).radio) != in));
 199         if (card(dev).mute.name) {
 200                 /*
 201                  * 7130 - we'll mute using some unconnected audio input
 202                  * 7134 - we'll probably should switch external mux with gpio
 203                  */
 204                 if (mute)
 205                         in = &card(dev).mute;
 206         }
 207
 208         if (dev->hw_mute  == mute &&
 209                 dev->hw_input == in && !dev->insuspend) {
 210                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 211                         mute,in->name);
 212                 return;
 213         }
 214
 215         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 216                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 217         dev->hw_mute  = mute;
 218         dev->hw_input = in;
 219
 220         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 221                 /* 7134 mute */
 222                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 223                                                     SAA7134_MUTE_MASK |
 224                                                     SAA7134_MUTE_ANALOG |
 225                                                     SAA7134_MUTE_I2S :
 226                                                     SAA7134_MUTE_MASK);
 227
 228         /* switch internal audio mux */
 229         switch (in->amux) {
 230         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 231         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 232         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 233         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 234         }
 235         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 236         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 237         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 238         // for oss, we need to change the clock configuration
 239         if (in->amux == TV)
 240                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 241         else
 242                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 243
 244         /* switch gpio-connected external audio mux */
 245         if (0 == card(dev).gpiomask)
 246                 return;
 247
 248         mask = card(dev).gpiomask;
 249         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 250         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 251         saa7134_track_gpio(dev,in->name);
 252 }
 253
 254 static void tvaudio_setmode(struct saa7134_dev *dev,
 255                             struct saa7134_tvaudio *audio,
 256                             char *note)
 257 {
 258         int acpf, tweak = 0;
 259
 260         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 261                 acpf = 0x19066;
 262         } else {
 263                 acpf = 0x1e000;
 264         }
 265         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 266                 tweak = audio_clock_tweak;
 267
 268         if (note)
 269                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 270                         note,audio->name,
 271                         audio->carr1 / 1000, audio->carr1 % 1000,
 272                         audio->carr2 / 1000, audio->carr2 % 1000,
 273                         acpf, tweak);
 274
 275         acpf += tweak;
 276         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 277         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 278         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 279         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 280
 281         switch (audio->mode) {
 282         case TVAUDIO_FM_MONO:
 283         case TVAUDIO_FM_BG_STEREO:
 284                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 285                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 286                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 287                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 288                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 289                 break;
 290         case TVAUDIO_FM_K_STEREO:
 291                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 292                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 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_NICAM_FM:
 298                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 299                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 300                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 301                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 302                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 303                 break;
 304         case TVAUDIO_NICAM_AM:
 305                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 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_FM_SAT_STEREO:
 312                 /* not implemented (yet) */
 313                 break;
 314         }
 315 }
 316
 317 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 318 {
 319         if (dev->thread.scan1 == dev->thread.scan2 &&
 320             !kthread_should_stop()) {
 321                 if (timeout < 0) {
 322                         set_current_state(TASK_INTERRUPTIBLE);
 323                         schedule();
 324                 } else {
 325                         schedule_timeout_interruptible
 326                                                 (msecs_to_jiffies(timeout));
 327                 }
 328         }
 329         return dev->thread.scan1 != dev->thread.scan2;
 330 }
 331
 332 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 333 {
 334         __s32 left,right,value;
 335
 336         if (audio_debug > 1) {
 337                 int i;
 338                 dprintk("debug %d:",scan->carr);
 339                 for (i = -150; i <= 150; i += 30) {
 340                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 341                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 342                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 343                                 return -1;
 344                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 345                         if (0 == i)
 346                                 printk("  #  %6d  # ",value >> 16);
 347                         else
 348                                 printk(" %6d",value >> 16);
 349                 }
 350                 printk("\n");
 351         }
 352         if (dev->tvnorm->id & scan->std) {
 353                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 354                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 355                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 356                         return -1;
 357                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 358
 359                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 360                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 361                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 362                         return -1;
 363                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 364
 365                 left >>= 16;
 366                 right >>= 16;
 367                 value = left > right ? left - right : right - left;
 368                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 369                         scan->carr / 1000, scan->carr % 1000,
 370                         scan->name, value, left, right);
 371         } else {
 372                 value = 0;
 373                 dprintk("skipping %d.%03d MHz [%4s]\n",
 374                         scan->carr / 1000, scan->carr % 1000, scan->name);
 375         }
 376         return value;
 377 }
 378
 379
 380 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 381 {
 382         __u32 idp, nicam, nicam_status;
 383         int retval = -1;
 384
 385         switch (audio->mode) {
 386         case TVAUDIO_FM_MONO:
 387                 return V4L2_TUNER_SUB_MONO;
 388         case TVAUDIO_FM_K_STEREO:
 389         case TVAUDIO_FM_BG_STEREO:
 390                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 391                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 392                 if (0x03 == (idp & 0x03))
 393                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 394                 else if (0x05 == (idp & 0x05))
 395                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 396                 else if (0x01 == (idp & 0x01))
 397                         retval = V4L2_TUNER_SUB_MONO;
 398                 break;
 399         case TVAUDIO_FM_SAT_STEREO:
 400                 /* not implemented (yet) */
 401                 break;
 402         case TVAUDIO_NICAM_FM:
 403         case TVAUDIO_NICAM_AM:
 404                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 405                 dprintk("getstereo: nicam=0x%x\n",nicam);
 406                 if (nicam & 0x1) {
 407                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 408                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 409
 410                         switch (nicam_status & 0x03) {
 411                             case 0x01:
 412                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 413                                 break;
 414                             case 0x02:
 415                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 416                                 break;
 417                             default:
 418                                 retval = V4L2_TUNER_SUB_MONO;
 419                         }
 420                 } else {
 421                         /* No nicam detected */
 422                 }
 423                 break;
 424         }
 425         if (retval != -1)
 426                 dprintk("found audio subchannels:%s%s%s%s\n",
 427                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 428                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 429                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 430                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 431         return retval;
 432 }
 433
 434 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 435                              u32 mode)
 436 {
 437         static char *name[] = {
 438                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 439                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 440                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 441                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 442                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 443         };
 444         static u32 fm[] = {
 445                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 446                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 447                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 448                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 449                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 450         };
 451         u32 reg;
 452
 453         switch (audio->mode) {
 454         case TVAUDIO_FM_MONO:
 455                 /* nothing to do ... */
 456                 break;
 457         case TVAUDIO_FM_K_STEREO:
 458         case TVAUDIO_FM_BG_STEREO:
 459         case TVAUDIO_NICAM_AM:
 460         case TVAUDIO_NICAM_FM:
 461                 dprintk("setstereo [fm] => %s\n",
 462                         name[ mode % ARRAY_SIZE(name) ]);
 463                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 464                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 465                 break;
 466         case TVAUDIO_FM_SAT_STEREO:
 467                 /* Not implemented */
 468                 break;
 469         }
 470         return 0;
 471 }
 472
 473 static int tvaudio_thread(void *data)
 474 {
 475         struct saa7134_dev *dev = data;
 476         int carr_vals[ARRAY_SIZE(mainscan)];
 477         unsigned int i, audio, nscan;
 478         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 479
 480         set_freezable();
 481
 482         for (;;) {
 483                 tvaudio_sleep(dev,-1);
 484                 if (kthread_should_stop())
 485                         goto done;
 486
 487         restart:
 488                 try_to_freeze();
 489
 490                 dev->thread.scan1 = dev->thread.scan2;
 491                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 492                 dev->tvaudio  = NULL;
 493
 494                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 495                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 496
 497                 if (dev->ctl_automute)
 498                         dev->automute = 1;
 499
 500                 mute_input_7134(dev);
 501
 502                 /* give the tuner some time */
 503                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 504                         goto restart;
 505
 506                 max1 = 0;
 507                 max2 = 0;
 508                 nscan = 0;
 509                 carrier = 0;
 510                 default_carrier = 0;
 511                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 512                         if (!(dev->tvnorm->id & mainscan[i].std))
 513                                 continue;
 514                         if (!default_carrier)
 515                                 default_carrier = mainscan[i].carr;
 516                         nscan++;
 517                 }
 518
 519                 if (1 == nscan) {
 520                         /* only one candidate -- skip scan ;) */
 521                         dprintk("only one main carrier candidate - skipping scan\n");
 522                         max1 = 12345;
 523                         carrier = default_carrier;
 524                 } else {
 525                         /* scan for the main carrier */
 526                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 527                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 528                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 529                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 530                                 if (dev->thread.scan1 != dev->thread.scan2)
 531                                         goto restart;
 532                         }
 533                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 534                                 if (max1 < carr_vals[i]) {
 535                                         max2 = max1;
 536                                         max1 = carr_vals[i];
 537                                         carrier = mainscan[i].carr;
 538                                 } else if (max2 < carr_vals[i]) {
 539                                         max2 = carr_vals[i];
 540                                 }
 541                         }
 542                 }
 543
 544                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 545                         /* found good carrier */
 546                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 547                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 548                                 max1, max2);
 549                         dev->last_carrier = carrier;
 550
 551                 } else if (0 != dev->last_carrier) {
 552                         /* no carrier -- try last detected one as fallback */
 553                         carrier = dev->last_carrier;
 554                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 555                                "using %d.%03d MHz [last detected]\n",
 556                                dev->name, carrier/1000, carrier%1000);
 557
 558                 } else {
 559                         /* no carrier + no fallback -- use default */
 560                         carrier = default_carrier;
 561                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 562                                "using %d.%03d MHz [default]\n",
 563                                dev->name, carrier/1000, carrier%1000);
 564                 }
 565                 tvaudio_setcarrier(dev,carrier,carrier);
 566                 dev->automute = 0;
 567                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 568                 saa7134_tvaudio_setmute(dev);
 569                 /* find the exact tv audio norm */
 570                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 571                         if (dev->tvnorm->id != UNSET &&
 572                                 !(dev->tvnorm->id & tvaudio[i].std))
 573                                 continue;
 574                         if (tvaudio[i].carr1 != carrier)
 575                                 continue;
 576                         /* Note: at least the primary carrier is right here */
 577                         if (UNSET == audio)
 578                                 audio = i;
 579                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 580                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 581                                 goto restart;
 582                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 583                                 audio = i;
 584                                 break;
 585                         }
 586                 }
 587                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 588                 if (UNSET == audio)
 589                         continue;
 590                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 591
 592                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 593                 dev->tvaudio = &tvaudio[audio];
 594
 595                 lastmode = 42;
 596                 for (;;) {
 597
 598                         try_to_freeze();
 599
 600                         if (tvaudio_sleep(dev,5000))
 601                                 goto restart;
 602                         if (kthread_should_stop())
 603                                 break;
 604                         if (UNSET == dev->thread.mode) {
 605                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 606                                 mode = saa7134_tvaudio_rx2mode(rx);
 607                         } else {
 608                                 mode = dev->thread.mode;
 609                         }
 610                         if (lastmode != mode) {
 611                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 612                                 lastmode = mode;
 613                         }
 614                 }
 615         }
 616
 617  done:
 618         dev->thread.stopped = 1;
 619         return 0;
 620 }
 621
 622 /* ------------------------------------------------------------------ */
 623 /* saa7133 / saa7135 code                                             */
 624
 625 static char *stdres[0x20] = {
 626         [0x00] = "no standard detected",
 627         [0x01] = "B/G (in progress)",
 628         [0x02] = "D/K (in progress)",
 629         [0x03] = "M (in progress)",
 630
 631         [0x04] = "B/G A2",
 632         [0x05] = "B/G NICAM",
 633         [0x06] = "D/K A2 (1)",
 634         [0x07] = "D/K A2 (2)",
 635         [0x08] = "D/K A2 (3)",
 636         [0x09] = "D/K NICAM",
 637         [0x0a] = "L NICAM",
 638         [0x0b] = "I NICAM",
 639
 640         [0x0c] = "M Korea",
 641         [0x0d] = "M BTSC ",
 642         [0x0e] = "M EIAJ",
 643
 644         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 645         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 646         [0x11] = "FM radio / IF sel / 50 deemp",
 647         [0x12] = "FM radio / IF sel / 75 deemp",
 648
 649         [0x13 ... 0x1e ] = "unknown",
 650         [0x1f] = "??? [in progress]",
 651 };
 652
 653 #define DSP_RETRY 32
 654 #define DSP_DELAY 16
 655 #define SAA7135_DSP_RWCLEAR_RERR 1
 656
 657 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 658 {
 659         int state = saa_readb(SAA7135_DSP_RWSTATE);
 660         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 661                 d2printk("%s: resetting error bit\n", dev->name);
 662                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 663         }
 664         return 0;
 665 }
 666
 667 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 668 {
 669         int state, count = DSP_RETRY;
 670
 671         state = saa_readb(SAA7135_DSP_RWSTATE);
 672         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 673                 printk(KERN_WARNING "%s: dsp access error\n", dev->name);
 674                 saa_dsp_reset_error_bit(dev);
 675                 return -EIO;
 676         }
 677         while (0 == (state & bit)) {
 678                 if (unlikely(0 == count)) {
 679                         printk("%s: dsp access wait timeout [bit=%s]\n",
 680                                dev->name,
 681                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 682                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 683                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 684                                "???");
 685                         return -EIO;
 686                 }
 687                 saa_wait(DSP_DELAY);
 688                 state = saa_readb(SAA7135_DSP_RWSTATE);
 689                 count--;
 690         }
 691         return 0;
 692 }
 693
 694
 695 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 696 {
 697         int err;
 698
 699         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 700         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 701         if (err < 0)
 702                 return err;
 703         saa_writel(reg,value);
 704         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 705         if (err < 0)
 706                 return err;
 707         return 0;
 708 }
 709
 710 static int getstereo_7133(struct saa7134_dev *dev)
 711 {
 712         int retval = V4L2_TUNER_SUB_MONO;
 713         u32 value;
 714
 715         value = saa_readl(0x528 >> 2);
 716         if (value & 0x20)
 717                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 718         if (value & 0x40)
 719                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 720         return retval;
 721 }
 722
 723 static int mute_input_7133(struct saa7134_dev *dev)
 724 {
 725         u32 reg = 0;
 726         u32 xbarin, xbarout;
 727         int mask;
 728         struct saa7134_input *in;
 729
 730         xbarin = 0x03;
 731         switch (dev->input->amux) {
 732         case TV:
 733                 reg = 0x02;
 734                 xbarin = 0;
 735                 break;
 736         case LINE1:
 737                 reg = 0x00;
 738                 break;
 739         case LINE2:
 740         case LINE2_LEFT:
 741                 reg = 0x09;
 742                 break;
 743         }
 744         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 745         if (dev->ctl_mute) {
 746                 reg = 0x07;
 747                 xbarout = 0xbbbbbb;
 748         } else
 749                 xbarout = 0xbbbb10;
 750         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 751
 752         saa_writel(0x594 >> 2, reg);
 753
 754
 755         /* switch gpio-connected external audio mux */
 756         if (0 != card(dev).gpiomask) {
 757                 mask = card(dev).gpiomask;
 758
 759                 if (card(dev).mute.name && dev->ctl_mute)
 760                         in = &card(dev).mute;
 761                 else
 762                         in = dev->input;
 763
 764                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 765                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 766                 saa7134_track_gpio(dev,in->name);
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int tvaudio_thread_ddep(void *data)
 773 {
 774         struct saa7134_dev *dev = data;
 775         u32 value, norms;
 776
 777         set_freezable();
 778         for (;;) {
 779                 tvaudio_sleep(dev,-1);
 780                 if (kthread_should_stop())
 781                         goto done;
 782         restart:
 783                 try_to_freeze();
 784
 785                 dev->thread.scan1 = dev->thread.scan2;
 786                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 787
 788                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 789                         /* insmod option override */
 790                         norms = (audio_ddep << 2) | 0x01;
 791                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 792                 } else if (&card(dev).radio == dev->input) {
 793                         dprintk("FM Radio\n");
 794                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 795                                 norms = (0x11 << 2) | 0x01;
 796                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 797                         } else {
 798                                 norms = (0x0f << 2) | 0x01;
 799                         }
 800                 } else {
 801                         /* (let chip) scan for sound carrier */
 802                         norms = 0;
 803                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 804                                 norms |= 0x04;
 805                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 806                                 norms |= 0x20;
 807                         if (dev->tvnorm->id & V4L2_STD_DK)
 808                                 norms |= 0x08;
 809                         if (dev->tvnorm->id & V4L2_STD_MN)
 810                                 norms |= 0x40;
 811                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 812                                 norms |= 0x10;
 813                         if (0 == norms)
 814                                 norms = 0x7c; /* all */
 815                         dprintk("scanning:%s%s%s%s%s\n",
 816                                 (norms & 0x04) ? " B/G"  : "",
 817                                 (norms & 0x08) ? " D/K"  : "",
 818                                 (norms & 0x10) ? " L/L'" : "",
 819                                 (norms & 0x20) ? " I"    : "",
 820                                 (norms & 0x40) ? " M"    : "");
 821                 }
 822
 823                 /* kick automatic standard detection */
 824                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 825                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 826
 827                 /* setup crossbars */
 828                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 829                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 830
 831                 if (tvaudio_sleep(dev,3000))
 832                         goto restart;
 833                 value = saa_readl(0x528 >> 2) & 0xffffff;
 834
 835                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 836                         value, stdres[value & 0x1f],
 837                         (value & 0x000020) ? ",stereo" : "",
 838                         (value & 0x000040) ? ",dual"   : "");
 839                 dprintk("detailed status: "
 840                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 841                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 842                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 843                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 844                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 845
 846                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 847                         (value & 0x001000) ? " SAP carrier "            : "",
 848                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 849                         (value & 0x004000) ? " SAP noise mute "         : "",
 850                         (value & 0x008000) ? " VDSP "                   : "",
 851
 852                         (value & 0x010000) ? " NICST "                  : "",
 853                         (value & 0x020000) ? " NICDU "                  : "",
 854                         (value & 0x040000) ? " NICAM muted "            : "",
 855                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 856
 857                         (value & 0x100000) ? " init done "              : "");
 858         }
 859
 860  done:
 861         dev->thread.stopped = 1;
 862         return 0;
 863 }
 864
 865 /* ------------------------------------------------------------------ */
 866 /* common stuff + external entry points                               */
 867
 868 void saa7134_enable_i2s(struct saa7134_dev *dev)
 869 {
 870         int i2s_format;
 871
 872         if (!card_is_empress(dev))
 873                 return;
 874
 875         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 876                 return;
 877
 878         /* configure GPIO for out */
 879         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 880
 881         switch (dev->pci->device) {
 882         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 883         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 884             /* Set I2S format (SONY)  */
 885             saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 886             /* Start I2S */
 887             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 888             break;
 889
 890         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 891             i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 892
 893             /* enable I2S audio output for the mpeg encoder */
 894             saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 895             saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 896             saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 897             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 898
 899         default:
 900             break;
 901         }
 902 }
 903
 904 int saa7134_tvaudio_rx2mode(u32 rx)
 905 {
 906         u32 mode;
 907
 908         mode = V4L2_TUNER_MODE_MONO;
 909         if (rx & V4L2_TUNER_SUB_STEREO)
 910                 mode = V4L2_TUNER_MODE_STEREO;
 911         else if (rx & V4L2_TUNER_SUB_LANG1)
 912                 mode = V4L2_TUNER_MODE_LANG1;
 913         else if (rx & V4L2_TUNER_SUB_LANG2)
 914                 mode = V4L2_TUNER_MODE_LANG2;
 915         return mode;
 916 }
 917
 918 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 919 {
 920         switch (dev->pci->device) {
 921         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 922         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 923                 mute_input_7134(dev);
 924                 break;
 925         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 926         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 927                 mute_input_7133(dev);
 928                 break;
 929         }
 930 }
 931
 932 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 933                               struct saa7134_input *in)
 934 {
 935         dev->input = in;
 936         switch (dev->pci->device) {
 937         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 938         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 939                 mute_input_7134(dev);
 940                 break;
 941         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 942         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 943                 mute_input_7133(dev);
 944                 break;
 945         }
 946         saa7134_enable_i2s(dev);
 947 }
 948
 949 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 950 {
 951         switch (dev->pci->device) {
 952         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 953                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 954                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 955                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 956                 break;
 957         }
 958 }
 959
 960 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 961 {
 962         int retval = V4L2_TUNER_SUB_MONO;
 963
 964         switch (dev->pci->device) {
 965         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 966                 if (dev->tvaudio)
 967                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 968                 break;
 969         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 970         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 971                 retval = getstereo_7133(dev);
 972                 break;
 973         }
 974         return retval;
 975 }
 976
 977 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 978 {
 979         int clock = saa7134_boards[dev->board].audio_clock;
 980
 981         if (UNSET != audio_clock_override)
 982                 clock = audio_clock_override;
 983
 984         switch (dev->pci->device) {
 985         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 986                 /* init all audio registers */
 987                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 988                 if (need_resched())
 989                         schedule();
 990                 else
 991                         udelay(10);
 992
 993                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 994                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 995                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 996                 /* frame locked audio is mandatory for NICAM */
 997                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 998                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 999                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1000                 break;
1001         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1002         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1003                 saa_writel(0x598 >> 2, clock);
1004                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1005                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1006         }
1007 }
1008
1009 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1010 {
1011         int (*my_thread)(void *data) = NULL;
1012
1013         switch (dev->pci->device) {
1014         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1015                 my_thread = tvaudio_thread;
1016                 break;
1017         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1018         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1019                 my_thread = tvaudio_thread_ddep;
1020                 break;
1021         }
1022
1023         dev->thread.thread = NULL;
1024         if (my_thread) {
1025                 saa7134_tvaudio_init(dev);
1026                 /* start tvaudio thread */
1027                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1028                 if (IS_ERR(dev->thread.thread)) {
1029                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
1030                                dev->name);
1031                         /* XXX: missing error handling here */
1032                 }
1033                 saa7134_tvaudio_do_scan(dev);
1034         }
1035
1036         saa7134_enable_i2s(dev);
1037         return 0;
1038 }
1039
1040 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1041 {
1042         /* shutdown tvaudio thread */
1043         if (dev->thread.thread && !dev->thread.stopped)
1044                 kthread_stop(dev->thread.thread);
1045
1046         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1047         return 0;
1048 }
1049
1050 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1051 {
1052         if (dev->input->amux != TV) {
1053                 dprintk("sound IF not in use, skipping scan\n");
1054                 dev->automute = 0;
1055                 saa7134_tvaudio_setmute(dev);
1056         } else if (dev->thread.thread) {
1057                 dev->thread.mode = UNSET;
1058                 dev->thread.scan2++;
1059
1060                 if (!dev->insuspend && !dev->thread.stopped)
1061                         wake_up_process(dev->thread.thread);
1062         } else {
1063                 dev->automute = 0;
1064                 saa7134_tvaudio_setmute(dev);
1065         }
1066         return 0;
1067 }
1068
1069 EXPORT_SYMBOL(saa_dsp_writel);
1070 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1071
1072 /* ----------------------------------------------------------- */
1073 /*
1074  * Local variables:
1075  * c-basic-offset: 8
1076  * End:
1077  */