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/moduleparam.h>
  27 #include <linux/kernel.h>
  28 #include <linux/kthread.h>
  29 #include <linux/slab.h>
  30 #include <linux/delay.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 void tvaudio_init(struct saa7134_dev *dev)
 167 {
 168         int clock = saa7134_boards[dev->board].audio_clock;
 169
 170         if (UNSET != audio_clock_override)
 171                 clock = audio_clock_override;
 172
 173         /* init all audio registers */
 174         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 175         if (need_resched())
 176                 schedule();
 177         else
 178                 udelay(10);
 179
 180         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 181         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 182         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 183         /* frame locked audio is mandatory for NICAM */
 184         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 185
 186         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 187         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 188         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 189         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 190 }
 191
 192 static u32 tvaudio_carr2reg(u32 carrier)
 193 {
 194         u64 a = carrier;
 195
 196         a <<= 24;
 197         do_div(a,12288);
 198         return a;
 199 }
 200
 201 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 202                                int primary, int secondary)
 203 {
 204         if (-1 == secondary)
 205                 secondary = primary;
 206         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 207         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 208 }
 209
 210 #define SAA7134_MUTE_MASK 0xbb
 211 #define SAA7134_MUTE_ANALOG 0x04
 212 #define SAA7134_MUTE_I2S 0x40
 213
 214 static void mute_input_7134(struct saa7134_dev *dev)
 215 {
 216         unsigned int mute;
 217         struct saa7134_input *in;
 218         int ausel=0, ics=0, ocs=0;
 219         int mask;
 220
 221         /* look what is to do ... */
 222         in   = dev->input;
 223         mute = (dev->ctl_mute ||
 224                 (dev->automute  &&  (&card(dev).radio) != in));
 225         if (card(dev).mute.name) {
 226                 /*
 227                  * 7130 - we'll mute using some unconnected audio input
 228                  * 7134 - we'll probably should switch external mux with gpio
 229                  */
 230                 if (mute)
 231                         in = &card(dev).mute;
 232         }
 233
 234         if (dev->hw_mute  == mute &&
 235                 dev->hw_input == in) {
 236                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 237                         mute,in->name);
 238                 return;
 239         }
 240
 241         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 242                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 243         dev->hw_mute  = mute;
 244         dev->hw_input = in;
 245
 246         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 247                 /* 7134 mute */
 248                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 249                                                     SAA7134_MUTE_MASK |
 250                                                     SAA7134_MUTE_ANALOG |
 251                                                     SAA7134_MUTE_I2S :
 252                                                     SAA7134_MUTE_MASK);
 253
 254         /* switch internal audio mux */
 255         switch (in->amux) {
 256         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 257         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 258         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 259         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 260         }
 261         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 262         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 263         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 264         // for oss, we need to change the clock configuration
 265         if (in->amux == TV)
 266                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 267         else
 268                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 269
 270         /* switch gpio-connected external audio mux */
 271         if (0 == card(dev).gpiomask)
 272                 return;
 273
 274         mask = card(dev).gpiomask;
 275         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 276         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 277         saa7134_track_gpio(dev,in->name);
 278 }
 279
 280 static void tvaudio_setmode(struct saa7134_dev *dev,
 281                             struct saa7134_tvaudio *audio,
 282                             char *note)
 283 {
 284         int acpf, tweak = 0;
 285
 286         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 287                 acpf = 0x19066;
 288         } else {
 289                 acpf = 0x1e000;
 290         }
 291         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 292                 tweak = audio_clock_tweak;
 293
 294         if (note)
 295                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 296                         note,audio->name,
 297                         audio->carr1 / 1000, audio->carr1 % 1000,
 298                         audio->carr2 / 1000, audio->carr2 % 1000,
 299                         acpf, tweak);
 300
 301         acpf += tweak;
 302         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 303         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 304         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 305         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 306
 307         switch (audio->mode) {
 308         case TVAUDIO_FM_MONO:
 309         case TVAUDIO_FM_BG_STEREO:
 310                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 311                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 312                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 313                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 314                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 315                 break;
 316         case TVAUDIO_FM_K_STEREO:
 317                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 318                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 319                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 320                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 321                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 322                 break;
 323         case TVAUDIO_NICAM_FM:
 324                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 325                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 326                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 327                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 328                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 329                 break;
 330         case TVAUDIO_NICAM_AM:
 331                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 332                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 333                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 334                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 335                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 336                 break;
 337         case TVAUDIO_FM_SAT_STEREO:
 338                 /* not implemented (yet) */
 339                 break;
 340         }
 341 }
 342
 343 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 344 {
 345         if (dev->thread.scan1 == dev->thread.scan2 &&
 346             !kthread_should_stop()) {
 347                 if (timeout < 0) {
 348                         set_current_state(TASK_INTERRUPTIBLE);
 349                         schedule();
 350                 } else {
 351                         schedule_timeout_interruptible
 352                                                 (msecs_to_jiffies(timeout));
 353                 }
 354         }
 355         return dev->thread.scan1 != dev->thread.scan2;
 356 }
 357
 358 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 359 {
 360         __s32 left,right,value;
 361
 362         if (audio_debug > 1) {
 363                 int i;
 364                 dprintk("debug %d:",scan->carr);
 365                 for (i = -150; i <= 150; i += 30) {
 366                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 367                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 368                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 369                                 return -1;
 370                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 371                         if (0 == i)
 372                                 printk("  #  %6d  # ",value >> 16);
 373                         else
 374                                 printk(" %6d",value >> 16);
 375                 }
 376                 printk("\n");
 377         }
 378         if (dev->tvnorm->id & scan->std) {
 379                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 380                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 381                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 382                         return -1;
 383                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 384
 385                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 386                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 387                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 388                         return -1;
 389                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 390
 391                 left >>= 16;
 392                 right >>= 16;
 393                 value = left > right ? left - right : right - left;
 394                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 395                         scan->carr / 1000, scan->carr % 1000,
 396                         scan->name, value, left, right);
 397         } else {
 398                 value = 0;
 399                 dprintk("skipping %d.%03d MHz [%4s]\n",
 400                         scan->carr / 1000, scan->carr % 1000, scan->name);
 401         }
 402         return value;
 403 }
 404
 405
 406 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 407 {
 408         __u32 idp, nicam, nicam_status;
 409         int retval = -1;
 410
 411         switch (audio->mode) {
 412         case TVAUDIO_FM_MONO:
 413                 return V4L2_TUNER_SUB_MONO;
 414         case TVAUDIO_FM_K_STEREO:
 415         case TVAUDIO_FM_BG_STEREO:
 416                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 417                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 418                 if (0x03 == (idp & 0x03))
 419                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 420                 else if (0x05 == (idp & 0x05))
 421                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 422                 else if (0x01 == (idp & 0x01))
 423                         retval = V4L2_TUNER_SUB_MONO;
 424                 break;
 425         case TVAUDIO_FM_SAT_STEREO:
 426                 /* not implemented (yet) */
 427                 break;
 428         case TVAUDIO_NICAM_FM:
 429         case TVAUDIO_NICAM_AM:
 430                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 431                 dprintk("getstereo: nicam=0x%x\n",nicam);
 432                 if (nicam & 0x1) {
 433                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 434                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 435
 436                         switch (nicam_status & 0x03) {
 437                             case 0x01:
 438                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 439                                 break;
 440                             case 0x02:
 441                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 442                                 break;
 443                             default:
 444                                 retval = V4L2_TUNER_SUB_MONO;
 445                         }
 446                 } else {
 447                         /* No nicam detected */
 448                 }
 449                 break;
 450         }
 451         if (retval != -1)
 452                 dprintk("found audio subchannels:%s%s%s%s\n",
 453                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 454                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 455                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 456                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 457         return retval;
 458 }
 459
 460 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 461                              u32 mode)
 462 {
 463         static char *name[] = {
 464                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 465                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 466                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 467                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 468                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 469         };
 470         static u32 fm[] = {
 471                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 472                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 473                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 474                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 475                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 476         };
 477         u32 reg;
 478
 479         switch (audio->mode) {
 480         case TVAUDIO_FM_MONO:
 481                 /* nothing to do ... */
 482                 break;
 483         case TVAUDIO_FM_K_STEREO:
 484         case TVAUDIO_FM_BG_STEREO:
 485         case TVAUDIO_NICAM_AM:
 486         case TVAUDIO_NICAM_FM:
 487                 dprintk("setstereo [fm] => %s\n",
 488                         name[ mode % ARRAY_SIZE(name) ]);
 489                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 490                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 491                 break;
 492         case TVAUDIO_FM_SAT_STEREO:
 493                 /* Not implemented */
 494                 break;
 495         }
 496         return 0;
 497 }
 498
 499 static int tvaudio_thread(void *data)
 500 {
 501         struct saa7134_dev *dev = data;
 502         int carr_vals[ARRAY_SIZE(mainscan)];
 503         unsigned int i, audio, nscan;
 504         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 505
 506         allow_signal(SIGTERM);
 507         for (;;) {
 508                 tvaudio_sleep(dev,-1);
 509                 if (kthread_should_stop() || signal_pending(current))
 510                         goto done;
 511
 512         restart:
 513                 dev->thread.scan1 = dev->thread.scan2;
 514                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 515                 dev->tvaudio  = NULL;
 516                 tvaudio_init(dev);
 517                 if (dev->ctl_automute)
 518                         dev->automute = 1;
 519                 mute_input_7134(dev);
 520
 521                 /* give the tuner some time */
 522                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 523                         goto restart;
 524
 525                 max1 = 0;
 526                 max2 = 0;
 527                 nscan = 0;
 528                 carrier = 0;
 529                 default_carrier = 0;
 530                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 531                         if (!(dev->tvnorm->id & mainscan[i].std))
 532                                 continue;
 533                         if (!default_carrier)
 534                                 default_carrier = mainscan[i].carr;
 535                         nscan++;
 536                 }
 537
 538                 if (1 == nscan) {
 539                         /* only one candidate -- skip scan ;) */
 540                         dprintk("only one main carrier candidate - skipping scan\n");
 541                         max1 = 12345;
 542                         carrier = default_carrier;
 543                 } else {
 544                         /* scan for the main carrier */
 545                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 546                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 547                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 548                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 549                                 if (dev->thread.scan1 != dev->thread.scan2)
 550                                         goto restart;
 551                         }
 552                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 553                                 if (max1 < carr_vals[i]) {
 554                                         max2 = max1;
 555                                         max1 = carr_vals[i];
 556                                         carrier = mainscan[i].carr;
 557                                 } else if (max2 < carr_vals[i]) {
 558                                         max2 = carr_vals[i];
 559                                 }
 560                         }
 561                 }
 562
 563                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 564                         /* found good carrier */
 565                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 566                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 567                                 max1, max2);
 568                         dev->last_carrier = carrier;
 569
 570                 } else if (0 != dev->last_carrier) {
 571                         /* no carrier -- try last detected one as fallback */
 572                         carrier = dev->last_carrier;
 573                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 574                                "using %d.%03d MHz [last detected]\n",
 575                                dev->name, carrier/1000, carrier%1000);
 576
 577                 } else {
 578                         /* no carrier + no fallback -- use default */
 579                         carrier = default_carrier;
 580                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 581                                "using %d.%03d MHz [default]\n",
 582                                dev->name, carrier/1000, carrier%1000);
 583                 }
 584                 tvaudio_setcarrier(dev,carrier,carrier);
 585                 dev->automute = 0;
 586                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 587                 saa7134_tvaudio_setmute(dev);
 588                 /* find the exact tv audio norm */
 589                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 590                         if (dev->tvnorm->id != UNSET &&
 591                                 !(dev->tvnorm->id & tvaudio[i].std))
 592                                 continue;
 593                         if (tvaudio[i].carr1 != carrier)
 594                                 continue;
 595                         /* Note: at least the primary carrier is right here */
 596                         if (UNSET == audio)
 597                                 audio = i;
 598                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 599                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 600                                 goto restart;
 601                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 602                                 audio = i;
 603                                 break;
 604                         }
 605                 }
 606                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 607                 if (UNSET == audio)
 608                         continue;
 609                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 610
 611                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 612                 dev->tvaudio = &tvaudio[audio];
 613
 614                 lastmode = 42;
 615                 for (;;) {
 616                         if (tvaudio_sleep(dev,5000))
 617                                 goto restart;
 618                         if (kthread_should_stop() || signal_pending(current))
 619                                 break;
 620                         if (UNSET == dev->thread.mode) {
 621                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 622                                 mode = saa7134_tvaudio_rx2mode(rx);
 623                         } else {
 624                                 mode = dev->thread.mode;
 625                         }
 626                         if (lastmode != mode) {
 627                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 628                                 lastmode = mode;
 629                         }
 630                 }
 631         }
 632
 633  done:
 634         return 0;
 635 }
 636
 637 /* ------------------------------------------------------------------ */
 638 /* saa7133 / saa7135 code                                             */
 639
 640 static char *stdres[0x20] = {
 641         [0x00] = "no standard detected",
 642         [0x01] = "B/G (in progress)",
 643         [0x02] = "D/K (in progress)",
 644         [0x03] = "M (in progress)",
 645
 646         [0x04] = "B/G A2",
 647         [0x05] = "B/G NICAM",
 648         [0x06] = "D/K A2 (1)",
 649         [0x07] = "D/K A2 (2)",
 650         [0x08] = "D/K A2 (3)",
 651         [0x09] = "D/K NICAM",
 652         [0x0a] = "L NICAM",
 653         [0x0b] = "I NICAM",
 654
 655         [0x0c] = "M Korea",
 656         [0x0d] = "M BTSC ",
 657         [0x0e] = "M EIAJ",
 658
 659         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 660         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 661         [0x11] = "FM radio / IF sel / 50 deemp",
 662         [0x12] = "FM radio / IF sel / 75 deemp",
 663
 664         [0x13 ... 0x1e ] = "unknown",
 665         [0x1f] = "??? [in progress]",
 666 };
 667
 668 #define DSP_RETRY 32
 669 #define DSP_DELAY 16
 670
 671 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 672 {
 673         int state, count = DSP_RETRY;
 674
 675         state = saa_readb(SAA7135_DSP_RWSTATE);
 676         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 677                 printk("%s: dsp access error\n",dev->name);
 678                 /* FIXME: send ack ... */
 679                 return -EIO;
 680         }
 681         while (0 == (state & bit)) {
 682                 if (unlikely(0 == count)) {
 683                         printk("%s: dsp access wait timeout [bit=%s]\n",
 684                                dev->name,
 685                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 686                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 687                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 688                                "???");
 689                         return -EIO;
 690                 }
 691                 saa_wait(DSP_DELAY);
 692                 state = saa_readb(SAA7135_DSP_RWSTATE);
 693                 count--;
 694         }
 695         return 0;
 696 }
 697
 698
 699 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 700 {
 701         int err;
 702
 703         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 704         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 705         if (err < 0)
 706                 return err;
 707         saa_writel(reg,value);
 708         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 709         if (err < 0)
 710                 return err;
 711         return 0;
 712 }
 713
 714 static int getstereo_7133(struct saa7134_dev *dev)
 715 {
 716         int retval = V4L2_TUNER_SUB_MONO;
 717         u32 value;
 718
 719         value = saa_readl(0x528 >> 2);
 720         if (value & 0x20)
 721                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 722         if (value & 0x40)
 723                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 724         return retval;
 725 }
 726
 727 static int mute_input_7133(struct saa7134_dev *dev)
 728 {
 729         u32 reg = 0;
 730         u32 xbarin, xbarout;
 731         int mask;
 732         struct saa7134_input *in;
 733
 734         xbarin = 0x03;
 735         switch (dev->input->amux) {
 736         case TV:
 737                 reg = 0x02;
 738                 xbarin = 0;
 739                 break;
 740         case LINE1:
 741                 reg = 0x00;
 742                 break;
 743         case LINE2:
 744         case LINE2_LEFT:
 745                 reg = 0x09;
 746                 break;
 747         }
 748         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 749         if (dev->ctl_mute) {
 750                 reg = 0x07;
 751                 xbarout = 0xbbbbbb;
 752         } else
 753                 xbarout = 0xbbbb10;
 754         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 755
 756         saa_writel(0x594 >> 2, reg);
 757
 758
 759         /* switch gpio-connected external audio mux */
 760         if (0 != card(dev).gpiomask) {
 761                 mask = card(dev).gpiomask;
 762
 763                 if (card(dev).mute.name && dev->ctl_mute)
 764                         in = &card(dev).mute;
 765                 else
 766                         in = dev->input;
 767
 768                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 769                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 770                 saa7134_track_gpio(dev,in->name);
 771         }
 772
 773         return 0;
 774 }
 775
 776 static int tvaudio_thread_ddep(void *data)
 777 {
 778         struct saa7134_dev *dev = data;
 779         u32 value, norms, clock;
 780
 781         allow_signal(SIGTERM);
 782
 783         clock = saa7134_boards[dev->board].audio_clock;
 784         if (UNSET != audio_clock_override)
 785                 clock = audio_clock_override;
 786         saa_writel(0x598 >> 2, clock);
 787
 788         /* unmute */
 789         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 790         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 791
 792         for (;;) {
 793                 tvaudio_sleep(dev,-1);
 794                 if (kthread_should_stop() || signal_pending(current))
 795                         goto done;
 796
 797         restart:
 798                 dev->thread.scan1 = dev->thread.scan2;
 799                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 800
 801                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 802                         /* insmod option override */
 803                         norms = (audio_ddep << 2) | 0x01;
 804                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 805                 } else if (&card(dev).radio == dev->input) {
 806                         dprintk("FM Radio\n");
 807                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 808                                 norms = (0x11 << 2) | 0x01;
 809                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 810                         } else {
 811                                 norms = (0x0f << 2) | 0x01;
 812                         }
 813                 } else {
 814                         /* (let chip) scan for sound carrier */
 815                         norms = 0;
 816                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 817                                 norms |= 0x04;
 818                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 819                                 norms |= 0x20;
 820                         if (dev->tvnorm->id & V4L2_STD_DK)
 821                                 norms |= 0x08;
 822                         if (dev->tvnorm->id & V4L2_STD_MN)
 823                                 norms |= 0x40;
 824                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 825                                 norms |= 0x10;
 826                         if (0 == norms)
 827                                 norms = 0x7c; /* all */
 828                         dprintk("scanning:%s%s%s%s%s\n",
 829                                 (norms & 0x04) ? " B/G"  : "",
 830                                 (norms & 0x08) ? " D/K"  : "",
 831                                 (norms & 0x10) ? " L/L'" : "",
 832                                 (norms & 0x20) ? " I"    : "",
 833                                 (norms & 0x40) ? " M"    : "");
 834                 }
 835
 836                 /* kick automatic standard detection */
 837                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 838                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 839
 840                 /* setup crossbars */
 841                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 842                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 843
 844                 if (tvaudio_sleep(dev,3000))
 845                         goto restart;
 846                 value = saa_readl(0x528 >> 2) & 0xffffff;
 847
 848                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 849                         value, stdres[value & 0x1f],
 850                         (value & 0x000020) ? ",stereo" : "",
 851                         (value & 0x000040) ? ",dual"   : "");
 852                 dprintk("detailed status: "
 853                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 854                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 855                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 856                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 857                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 858
 859                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 860                         (value & 0x001000) ? " SAP carrier "            : "",
 861                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 862                         (value & 0x004000) ? " SAP noise mute "         : "",
 863                         (value & 0x008000) ? " VDSP "                   : "",
 864
 865                         (value & 0x010000) ? " NICST "                  : "",
 866                         (value & 0x020000) ? " NICDU "                  : "",
 867                         (value & 0x040000) ? " NICAM muted "            : "",
 868                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 869
 870                         (value & 0x100000) ? " init done "              : "");
 871         }
 872
 873  done:
 874         return 0;
 875 }
 876
 877 /* ------------------------------------------------------------------ */
 878 /* common stuff + external entry points                               */
 879
 880 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 881 {
 882         int i2s_format;
 883
 884         if (!card_is_empress(dev))
 885                 return;
 886         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 887
 888         /* enable I2S audio output for the mpeg encoder */
 889         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 890         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 891         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 892         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 893 }
 894
 895 int saa7134_tvaudio_rx2mode(u32 rx)
 896 {
 897         u32 mode;
 898
 899         mode = V4L2_TUNER_MODE_MONO;
 900         if (rx & V4L2_TUNER_SUB_STEREO)
 901                 mode = V4L2_TUNER_MODE_STEREO;
 902         else if (rx & V4L2_TUNER_SUB_LANG1)
 903                 mode = V4L2_TUNER_MODE_LANG1;
 904         else if (rx & V4L2_TUNER_SUB_LANG2)
 905                 mode = V4L2_TUNER_MODE_LANG2;
 906         return mode;
 907 }
 908
 909 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 910 {
 911         switch (dev->pci->device) {
 912         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 913         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 914                 mute_input_7134(dev);
 915                 break;
 916         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 917         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 918                 mute_input_7133(dev);
 919                 break;
 920         }
 921 }
 922
 923 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 924                               struct saa7134_input *in)
 925 {
 926         dev->input = in;
 927         switch (dev->pci->device) {
 928         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 929         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 930                 mute_input_7134(dev);
 931                 break;
 932         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 933         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 934                 mute_input_7133(dev);
 935                 break;
 936         }
 937         saa7134_enable_i2s(dev);
 938 }
 939
 940 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 941 {
 942         switch (dev->pci->device) {
 943         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 944                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 945                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 946                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 947                 break;
 948         }
 949 }
 950
 951 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 952 {
 953         int retval = V4L2_TUNER_SUB_MONO;
 954
 955         switch (dev->pci->device) {
 956         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 957                 if (dev->tvaudio)
 958                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 959                 break;
 960         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 961         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 962                 retval = getstereo_7133(dev);
 963                 break;
 964         }
 965         return retval;
 966 }
 967
 968 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 969 {
 970         int (*my_thread)(void *data) = NULL;
 971
 972         switch (dev->pci->device) {
 973         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 974                 my_thread = tvaudio_thread;
 975                 break;
 976         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 977         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 978                 my_thread = tvaudio_thread_ddep;
 979                 break;
 980         }
 981
 982         dev->thread.thread = NULL;
 983         if (my_thread) {
 984                 /* start tvaudio thread */
 985                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
 986                 if (IS_ERR(dev->thread.thread)) {
 987                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 988                                dev->name);
 989                         /* XXX: missing error handling here */
 990                 }
 991                 saa7134_tvaudio_do_scan(dev);
 992         }
 993
 994         saa7134_enable_i2s(dev);
 995         return 0;
 996 }
 997
 998 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 999 {
1000         /* shutdown tvaudio thread */
1001         if (dev->thread.thread)
1002                 kthread_stop(dev->thread.thread);
1003
1004         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1005         return 0;
1006 }
1007
1008 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1009 {
1010         if (dev->input->amux != TV) {
1011                 dprintk("sound IF not in use, skipping scan\n");
1012                 dev->automute = 0;
1013                 saa7134_tvaudio_setmute(dev);
1014         } else if (dev->thread.thread) {
1015                 dev->thread.mode = UNSET;
1016                 dev->thread.scan2++;
1017                 wake_up_process(dev->thread.thread);
1018         } else {
1019                 dev->automute = 0;
1020                 saa7134_tvaudio_setmute(dev);
1021         }
1022         return 0;
1023 }
1024
1025 EXPORT_SYMBOL(saa_dsp_writel);
1026 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1027
1028 /* ----------------------------------------------------------- */
1029 /*
1030  * Local variables:
1031  * c-basic-offset: 8
1032  * End:
1033  */