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 = 0;
  39 module_param(audio_debug, int, 0644);
  40 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  41
  42 static unsigned int audio_ddep = 0;
  43 module_param(audio_ddep, int, 0644);
  44 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  45
  46 static int audio_clock_override = UNSET;
  47 module_param(audio_clock_override, int, 0644);
  48
  49 static int audio_clock_tweak = 0;
  50 module_param(audio_clock_tweak, int, 0644);
  51 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  52
  53 #define dprintk(fmt, arg...)    if (audio_debug) \
  54         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  55 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  56         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  57
  58 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  59                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  60
  61 /* msecs */
  62 #define SCAN_INITIAL_DELAY     1000
  63 #define SCAN_SAMPLE_DELAY       200
  64 #define SCAN_SUBCARRIER_DELAY  2000
  65
  66 /* ------------------------------------------------------------------ */
  67 /* saa7134 code                                                       */
  68
  69 static struct mainscan {
  70         char         *name;
  71         v4l2_std_id  std;
  72         int          carr;
  73 } mainscan[] = {
  74         {
  75                 .name = "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 (sizeof(tvaudio)/sizeof(struct saa7134_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
 481         set_freezable();
 482
 483         for (;;) {
 484                 tvaudio_sleep(dev,-1);
 485                 if (kthread_should_stop())
 486                         goto done;
 487
 488         restart:
 489                 try_to_freeze();
 490
 491                 dev->thread.scan1 = dev->thread.scan2;
 492                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 493                 dev->tvaudio  = NULL;
 494
 495                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 496                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 497
 498                 if (dev->ctl_automute)
 499                         dev->automute = 1;
 500
 501                 mute_input_7134(dev);
 502
 503                 /* give the tuner some time */
 504                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 505                         goto restart;
 506
 507                 max1 = 0;
 508                 max2 = 0;
 509                 nscan = 0;
 510                 carrier = 0;
 511                 default_carrier = 0;
 512                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 513                         if (!(dev->tvnorm->id & mainscan[i].std))
 514                                 continue;
 515                         if (!default_carrier)
 516                                 default_carrier = mainscan[i].carr;
 517                         nscan++;
 518                 }
 519
 520                 if (1 == nscan) {
 521                         /* only one candidate -- skip scan ;) */
 522                         dprintk("only one main carrier candidate - skipping scan\n");
 523                         max1 = 12345;
 524                         carrier = default_carrier;
 525                 } else {
 526                         /* scan for the main carrier */
 527                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 528                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 529                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 530                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 531                                 if (dev->thread.scan1 != dev->thread.scan2)
 532                                         goto restart;
 533                         }
 534                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 535                                 if (max1 < carr_vals[i]) {
 536                                         max2 = max1;
 537                                         max1 = carr_vals[i];
 538                                         carrier = mainscan[i].carr;
 539                                 } else if (max2 < carr_vals[i]) {
 540                                         max2 = carr_vals[i];
 541                                 }
 542                         }
 543                 }
 544
 545                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 546                         /* found good carrier */
 547                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 548                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 549                                 max1, max2);
 550                         dev->last_carrier = carrier;
 551
 552                 } else if (0 != dev->last_carrier) {
 553                         /* no carrier -- try last detected one as fallback */
 554                         carrier = dev->last_carrier;
 555                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 556                                "using %d.%03d MHz [last detected]\n",
 557                                dev->name, carrier/1000, carrier%1000);
 558
 559                 } else {
 560                         /* no carrier + no fallback -- use default */
 561                         carrier = default_carrier;
 562                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 563                                "using %d.%03d MHz [default]\n",
 564                                dev->name, carrier/1000, carrier%1000);
 565                 }
 566                 tvaudio_setcarrier(dev,carrier,carrier);
 567                 dev->automute = 0;
 568                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 569                 saa7134_tvaudio_setmute(dev);
 570                 /* find the exact tv audio norm */
 571                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 572                         if (dev->tvnorm->id != UNSET &&
 573                                 !(dev->tvnorm->id & tvaudio[i].std))
 574                                 continue;
 575                         if (tvaudio[i].carr1 != carrier)
 576                                 continue;
 577                         /* Note: at least the primary carrier is right here */
 578                         if (UNSET == audio)
 579                                 audio = i;
 580                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 581                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 582                                 goto restart;
 583                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 584                                 audio = i;
 585                                 break;
 586                         }
 587                 }
 588                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 589                 if (UNSET == audio)
 590                         continue;
 591                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 592
 593                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 594                 dev->tvaudio = &tvaudio[audio];
 595
 596                 lastmode = 42;
 597                 for (;;) {
 598
 599                         try_to_freeze();
 600
 601                         if (tvaudio_sleep(dev,5000))
 602                                 goto restart;
 603                         if (kthread_should_stop())
 604                                 break;
 605                         if (UNSET == dev->thread.mode) {
 606                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 607                                 mode = saa7134_tvaudio_rx2mode(rx);
 608                         } else {
 609                                 mode = dev->thread.mode;
 610                         }
 611                         if (lastmode != mode) {
 612                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 613                                 lastmode = mode;
 614                         }
 615                 }
 616         }
 617
 618  done:
 619         dev->thread.stopped = 1;
 620         return 0;
 621 }
 622
 623 /* ------------------------------------------------------------------ */
 624 /* saa7133 / saa7135 code                                             */
 625
 626 static char *stdres[0x20] = {
 627         [0x00] = "no standard detected",
 628         [0x01] = "B/G (in progress)",
 629         [0x02] = "D/K (in progress)",
 630         [0x03] = "M (in progress)",
 631
 632         [0x04] = "B/G A2",
 633         [0x05] = "B/G NICAM",
 634         [0x06] = "D/K A2 (1)",
 635         [0x07] = "D/K A2 (2)",
 636         [0x08] = "D/K A2 (3)",
 637         [0x09] = "D/K NICAM",
 638         [0x0a] = "L NICAM",
 639         [0x0b] = "I NICAM",
 640
 641         [0x0c] = "M Korea",
 642         [0x0d] = "M BTSC ",
 643         [0x0e] = "M EIAJ",
 644
 645         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 646         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 647         [0x11] = "FM radio / IF sel / 50 deemp",
 648         [0x12] = "FM radio / IF sel / 75 deemp",
 649
 650         [0x13 ... 0x1e ] = "unknown",
 651         [0x1f] = "??? [in progress]",
 652 };
 653
 654 #define DSP_RETRY 32
 655 #define DSP_DELAY 16
 656
 657 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 658 {
 659         int state, count = DSP_RETRY;
 660
 661         state = saa_readb(SAA7135_DSP_RWSTATE);
 662         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 663                 printk("%s: dsp access error\n",dev->name);
 664                 /* FIXME: send ack ... */
 665                 return -EIO;
 666         }
 667         while (0 == (state & bit)) {
 668                 if (unlikely(0 == count)) {
 669                         printk("%s: dsp access wait timeout [bit=%s]\n",
 670                                dev->name,
 671                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 672                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 673                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 674                                "???");
 675                         return -EIO;
 676                 }
 677                 saa_wait(DSP_DELAY);
 678                 state = saa_readb(SAA7135_DSP_RWSTATE);
 679                 count--;
 680         }
 681         return 0;
 682 }
 683
 684
 685 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 686 {
 687         int err;
 688
 689         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 690         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 691         if (err < 0)
 692                 return err;
 693         saa_writel(reg,value);
 694         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 695         if (err < 0)
 696                 return err;
 697         return 0;
 698 }
 699
 700 static int getstereo_7133(struct saa7134_dev *dev)
 701 {
 702         int retval = V4L2_TUNER_SUB_MONO;
 703         u32 value;
 704
 705         value = saa_readl(0x528 >> 2);
 706         if (value & 0x20)
 707                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 708         if (value & 0x40)
 709                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 710         return retval;
 711 }
 712
 713 static int mute_input_7133(struct saa7134_dev *dev)
 714 {
 715         u32 reg = 0;
 716         u32 xbarin, xbarout;
 717         int mask;
 718         struct saa7134_input *in;
 719
 720         xbarin = 0x03;
 721         switch (dev->input->amux) {
 722         case TV:
 723                 reg = 0x02;
 724                 xbarin = 0;
 725                 break;
 726         case LINE1:
 727                 reg = 0x00;
 728                 break;
 729         case LINE2:
 730         case LINE2_LEFT:
 731                 reg = 0x09;
 732                 break;
 733         }
 734         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 735         if (dev->ctl_mute) {
 736                 reg = 0x07;
 737                 xbarout = 0xbbbbbb;
 738         } else
 739                 xbarout = 0xbbbb10;
 740         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 741
 742         saa_writel(0x594 >> 2, reg);
 743
 744
 745         /* switch gpio-connected external audio mux */
 746         if (0 != card(dev).gpiomask) {
 747                 mask = card(dev).gpiomask;
 748
 749                 if (card(dev).mute.name && dev->ctl_mute)
 750                         in = &card(dev).mute;
 751                 else
 752                         in = dev->input;
 753
 754                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 755                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 756                 saa7134_track_gpio(dev,in->name);
 757         }
 758
 759         return 0;
 760 }
 761
 762 static int tvaudio_thread_ddep(void *data)
 763 {
 764         struct saa7134_dev *dev = data;
 765         u32 value, norms;
 766
 767
 768         set_freezable();
 769         for (;;) {
 770                 tvaudio_sleep(dev,-1);
 771                 if (kthread_should_stop())
 772                         goto done;
 773         restart:
 774                 try_to_freeze();
 775
 776                 dev->thread.scan1 = dev->thread.scan2;
 777                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 778
 779                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 780                         /* insmod option override */
 781                         norms = (audio_ddep << 2) | 0x01;
 782                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 783                 } else if (&card(dev).radio == dev->input) {
 784                         dprintk("FM Radio\n");
 785                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 786                                 norms = (0x11 << 2) | 0x01;
 787                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 788                         } else {
 789                                 norms = (0x0f << 2) | 0x01;
 790                         }
 791                 } else {
 792                         /* (let chip) scan for sound carrier */
 793                         norms = 0;
 794                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 795                                 norms |= 0x04;
 796                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 797                                 norms |= 0x20;
 798                         if (dev->tvnorm->id & V4L2_STD_DK)
 799                                 norms |= 0x08;
 800                         if (dev->tvnorm->id & V4L2_STD_MN)
 801                                 norms |= 0x40;
 802                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 803                                 norms |= 0x10;
 804                         if (0 == norms)
 805                                 norms = 0x7c; /* all */
 806                         dprintk("scanning:%s%s%s%s%s\n",
 807                                 (norms & 0x04) ? " B/G"  : "",
 808                                 (norms & 0x08) ? " D/K"  : "",
 809                                 (norms & 0x10) ? " L/L'" : "",
 810                                 (norms & 0x20) ? " I"    : "",
 811                                 (norms & 0x40) ? " M"    : "");
 812                 }
 813
 814                 /* kick automatic standard detection */
 815                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 816                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 817
 818                 /* setup crossbars */
 819                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 820                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 821
 822                 if (tvaudio_sleep(dev,3000))
 823                         goto restart;
 824                 value = saa_readl(0x528 >> 2) & 0xffffff;
 825
 826                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 827                         value, stdres[value & 0x1f],
 828                         (value & 0x000020) ? ",stereo" : "",
 829                         (value & 0x000040) ? ",dual"   : "");
 830                 dprintk("detailed status: "
 831                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 832                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 833                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 834                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 835                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 836
 837                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 838                         (value & 0x001000) ? " SAP carrier "            : "",
 839                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 840                         (value & 0x004000) ? " SAP noise mute "         : "",
 841                         (value & 0x008000) ? " VDSP "                   : "",
 842
 843                         (value & 0x010000) ? " NICST "                  : "",
 844                         (value & 0x020000) ? " NICDU "                  : "",
 845                         (value & 0x040000) ? " NICAM muted "            : "",
 846                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 847
 848                         (value & 0x100000) ? " init done "              : "");
 849         }
 850
 851  done:
 852         dev->thread.stopped = 1;
 853         return 0;
 854 }
 855
 856 /* ------------------------------------------------------------------ */
 857 /* common stuff + external entry points                               */
 858
 859 void saa7134_enable_i2s(struct saa7134_dev *dev)
 860 {
 861         int i2s_format;
 862
 863         if (!card_is_empress(dev))
 864                 return;
 865         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 866
 867         /* enable I2S audio output for the mpeg encoder */
 868         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 869         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 870         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 871         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 872 }
 873
 874 int saa7134_tvaudio_rx2mode(u32 rx)
 875 {
 876         u32 mode;
 877
 878         mode = V4L2_TUNER_MODE_MONO;
 879         if (rx & V4L2_TUNER_SUB_STEREO)
 880                 mode = V4L2_TUNER_MODE_STEREO;
 881         else if (rx & V4L2_TUNER_SUB_LANG1)
 882                 mode = V4L2_TUNER_MODE_LANG1;
 883         else if (rx & V4L2_TUNER_SUB_LANG2)
 884                 mode = V4L2_TUNER_MODE_LANG2;
 885         return mode;
 886 }
 887
 888 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 889 {
 890         switch (dev->pci->device) {
 891         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 892         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 893                 mute_input_7134(dev);
 894                 break;
 895         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 896         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 897                 mute_input_7133(dev);
 898                 break;
 899         }
 900 }
 901
 902 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 903                               struct saa7134_input *in)
 904 {
 905         dev->input = in;
 906         switch (dev->pci->device) {
 907         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 908         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 909                 mute_input_7134(dev);
 910                 break;
 911         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 912         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 913                 mute_input_7133(dev);
 914                 break;
 915         }
 916         saa7134_enable_i2s(dev);
 917 }
 918
 919 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 920 {
 921         switch (dev->pci->device) {
 922         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 923                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 924                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 925                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 926                 break;
 927         }
 928 }
 929
 930 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 931 {
 932         int retval = V4L2_TUNER_SUB_MONO;
 933
 934         switch (dev->pci->device) {
 935         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 936                 if (dev->tvaudio)
 937                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 938                 break;
 939         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 940         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 941                 retval = getstereo_7133(dev);
 942                 break;
 943         }
 944         return retval;
 945 }
 946
 947 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 948 {
 949         int clock = saa7134_boards[dev->board].audio_clock;
 950
 951         if (UNSET != audio_clock_override)
 952                 clock = audio_clock_override;
 953
 954         switch (dev->pci->device) {
 955         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 956                 /* init all audio registers */
 957                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 958                 if (need_resched())
 959                         schedule();
 960                 else
 961                         udelay(10);
 962
 963                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 964                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 965                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 966                 /* frame locked audio is mandatory for NICAM */
 967                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 968                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 969                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 970                 break;
 971         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 972         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 973                 saa_writel(0x598 >> 2, clock);
 974                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 975                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 976         }
 977 }
 978
 979 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 980 {
 981         int (*my_thread)(void *data) = NULL;
 982
 983         switch (dev->pci->device) {
 984         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 985                 my_thread = tvaudio_thread;
 986                 break;
 987         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 988         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 989                 my_thread = tvaudio_thread_ddep;
 990                 break;
 991         }
 992
 993         dev->thread.thread = NULL;
 994         if (my_thread) {
 995                 saa7134_tvaudio_init(dev);
 996                 /* start tvaudio thread */
 997                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
 998                 if (IS_ERR(dev->thread.thread)) {
 999                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
1000                                dev->name);
1001                         /* XXX: missing error handling here */
1002                 }
1003                 saa7134_tvaudio_do_scan(dev);
1004         }
1005
1006         saa7134_enable_i2s(dev);
1007         return 0;
1008 }
1009
1010 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1011 {
1012         /* shutdown tvaudio thread */
1013         if (dev->thread.thread && !dev->thread.stopped)
1014                 kthread_stop(dev->thread.thread);
1015
1016         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1017         return 0;
1018 }
1019
1020 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1021 {
1022         if (dev->input->amux != TV) {
1023                 dprintk("sound IF not in use, skipping scan\n");
1024                 dev->automute = 0;
1025                 saa7134_tvaudio_setmute(dev);
1026         } else if (dev->thread.thread) {
1027                 dev->thread.mode = UNSET;
1028                 dev->thread.scan2++;
1029
1030                 if (!dev->insuspend && !dev->thread.stopped)
1031                         wake_up_process(dev->thread.thread);
1032         } else {
1033                 dev->automute = 0;
1034                 saa7134_tvaudio_setmute(dev);
1035         }
1036         return 0;
1037 }
1038
1039 EXPORT_SYMBOL(saa_dsp_writel);
1040 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1041
1042 /* ----------------------------------------------------------- */
1043 /*
1044  * Local variables:
1045  * c-basic-offset: 8
1046  * End:
1047  */