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 <asm/div64.h>
  31
  32 #include "saa7134-reg.h"
  33 #include "saa7134.h"
  34
  35 /* ------------------------------------------------------------------ */
  36
  37 static unsigned int audio_debug = 0;
  38 module_param(audio_debug, int, 0644);
  39 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  40
  41 static unsigned int audio_ddep = 0;
  42 module_param(audio_ddep, int, 0644);
  43 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  44
  45 static int audio_clock_override = UNSET;
  46 module_param(audio_clock_override, int, 0644);
  47
  48 static int audio_clock_tweak = 0;
  49 module_param(audio_clock_tweak, int, 0644);
  50 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  51
  52 #define dprintk(fmt, arg...)    if (audio_debug) \
  53         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  54 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  55         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  56
  57 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  58                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  59
  60 /* msecs */
  61 #define SCAN_INITIAL_DELAY     1000
  62 #define SCAN_SAMPLE_DELAY       200
  63 #define SCAN_SUBCARRIER_DELAY  2000
  64
  65 /* ------------------------------------------------------------------ */
  66 /* saa7134 code                                                       */
  67
  68 static struct mainscan {
  69         char         *name;
  70         v4l2_std_id  std;
  71         int          carr;
  72 } mainscan[] = {
  73         {
  74                 .name = "MN",
  75                 .std  = V4L2_STD_MN,
  76                 .carr = 4500,
  77         },{
  78                 .name = "BGH",
  79                 .std  = V4L2_STD_B | V4L2_STD_GH,
  80                 .carr = 5500,
  81         },{
  82                 .name = "I",
  83                 .std  = V4L2_STD_PAL_I,
  84                 .carr = 6000,
  85         },{
  86                 .name = "DKL",
  87                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  88                 .carr = 6500,
  89         }
  90 };
  91
  92 static struct saa7134_tvaudio tvaudio[] = {
  93         {
  94                 .name          = "PAL-B/G FM-stereo",
  95                 .std           = V4L2_STD_PAL_BG,
  96                 .mode          = TVAUDIO_FM_BG_STEREO,
  97                 .carr1         = 5500,
  98                 .carr2         = 5742,
  99         },{
 100                 .name          = "PAL-D/K1 FM-stereo",
 101                 .std           = V4L2_STD_PAL_DK,
 102                 .carr1         = 6500,
 103                 .carr2         = 6258,
 104                 .mode          = TVAUDIO_FM_BG_STEREO,
 105         },{
 106                 .name          = "PAL-D/K2 FM-stereo",
 107                 .std           = V4L2_STD_PAL_DK,
 108                 .carr1         = 6500,
 109                 .carr2         = 6742,
 110                 .mode          = TVAUDIO_FM_BG_STEREO,
 111         },{
 112                 .name          = "PAL-D/K3 FM-stereo",
 113                 .std           = V4L2_STD_PAL_DK,
 114                 .carr1         = 6500,
 115                 .carr2         = 5742,
 116                 .mode          = TVAUDIO_FM_BG_STEREO,
 117         },{
 118                 .name          = "PAL-B/G NICAM",
 119                 .std           = V4L2_STD_PAL_BG,
 120                 .carr1         = 5500,
 121                 .carr2         = 5850,
 122                 .mode          = TVAUDIO_NICAM_FM,
 123         },{
 124                 .name          = "PAL-I NICAM",
 125                 .std           = V4L2_STD_PAL_I,
 126                 .carr1         = 6000,
 127                 .carr2         = 6552,
 128                 .mode          = TVAUDIO_NICAM_FM,
 129         },{
 130                 .name          = "PAL-D/K NICAM",
 131                 .std           = V4L2_STD_PAL_DK,
 132                 .carr1         = 6500,
 133                 .carr2         = 5850,
 134                 .mode          = TVAUDIO_NICAM_FM,
 135         },{
 136                 .name          = "SECAM-L NICAM",
 137                 .std           = V4L2_STD_SECAM_L,
 138                 .carr1         = 6500,
 139                 .carr2         = 5850,
 140                 .mode          = TVAUDIO_NICAM_AM,
 141         },{
 142                 .name          = "SECAM-D/K NICAM",
 143                 .std           = V4L2_STD_SECAM_DK,
 144                 .carr1         = 6500,
 145                 .carr2         = 5850,
 146                 .mode          = TVAUDIO_NICAM_FM,
 147         },{
 148                 .name          = "NTSC-A2 FM-stereo",
 149                 .std           = V4L2_STD_NTSC,
 150                 .carr1         = 4500,
 151                 .carr2         = 4724,
 152                 .mode          = TVAUDIO_FM_K_STEREO,
 153         },{
 154                 .name          = "NTSC-M",
 155                 .std           = V4L2_STD_NTSC,
 156                 .carr1         = 4500,
 157                 .carr2         = -1,
 158                 .mode          = TVAUDIO_FM_MONO,
 159         }
 160 };
 161 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 162
 163 /* ------------------------------------------------------------------ */
 164
 165 static void tvaudio_init(struct saa7134_dev *dev)
 166 {
 167         int clock = saa7134_boards[dev->board].audio_clock;
 168
 169         if (UNSET != audio_clock_override)
 170                 clock = audio_clock_override;
 171
 172         /* init all audio registers */
 173         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 174         if (need_resched())
 175                 schedule();
 176         else
 177                 udelay(10);
 178
 179         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 180         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 181         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 182         /* frame locked audio is mandatory for NICAM */
 183         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 184
 185         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 186         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 187         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 188         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 189 }
 190
 191 static u32 tvaudio_carr2reg(u32 carrier)
 192 {
 193         u64 a = carrier;
 194
 195         a <<= 24;
 196         do_div(a,12288);
 197         return a;
 198 }
 199
 200 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 201                                int primary, int secondary)
 202 {
 203         if (-1 == secondary)
 204                 secondary = primary;
 205         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 206         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 207 }
 208
 209 #define SAA7134_MUTE_MASK 0xbb
 210 #define SAA7134_MUTE_ANALOG 0x04
 211 #define SAA7134_MUTE_I2S 0x40
 212
 213 static void mute_input_7134(struct saa7134_dev *dev)
 214 {
 215         unsigned int mute;
 216         struct saa7134_input *in;
 217         int ausel=0, ics=0, ocs=0;
 218         int mask;
 219
 220         /* look what is to do ... */
 221         in   = dev->input;
 222         mute = (dev->ctl_mute ||
 223                 (dev->automute  &&  (&card(dev).radio) != in));
 224         if (card(dev).mute.name) {
 225                 /*
 226                  * 7130 - we'll mute using some unconnected audio input
 227                  * 7134 - we'll probably should switch external mux with gpio
 228                  */
 229                 if (mute)
 230                         in = &card(dev).mute;
 231         }
 232
 233         if (dev->hw_mute  == mute &&
 234                 dev->hw_input == in && !dev->inresume) {
 235                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 236                         mute,in->name);
 237                 return;
 238         }
 239
 240         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 241                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 242         dev->hw_mute  = mute;
 243         dev->hw_input = in;
 244
 245         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 246                 /* 7134 mute */
 247                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 248                                                     SAA7134_MUTE_MASK |
 249                                                     SAA7134_MUTE_ANALOG |
 250                                                     SAA7134_MUTE_I2S :
 251                                                     SAA7134_MUTE_MASK);
 252
 253         /* switch internal audio mux */
 254         switch (in->amux) {
 255         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 256         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 257         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 258         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 259         }
 260         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 261         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 262         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 263         // for oss, we need to change the clock configuration
 264         if (in->amux == TV)
 265                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 266         else
 267                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 268
 269         /* switch gpio-connected external audio mux */
 270         if (0 == card(dev).gpiomask)
 271                 return;
 272
 273         mask = card(dev).gpiomask;
 274         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 275         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 276         saa7134_track_gpio(dev,in->name);
 277 }
 278
 279 static void tvaudio_setmode(struct saa7134_dev *dev,
 280                             struct saa7134_tvaudio *audio,
 281                             char *note)
 282 {
 283         int acpf, tweak = 0;
 284
 285         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 286                 acpf = 0x19066;
 287         } else {
 288                 acpf = 0x1e000;
 289         }
 290         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 291                 tweak = audio_clock_tweak;
 292
 293         if (note)
 294                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 295                         note,audio->name,
 296                         audio->carr1 / 1000, audio->carr1 % 1000,
 297                         audio->carr2 / 1000, audio->carr2 % 1000,
 298                         acpf, tweak);
 299
 300         acpf += tweak;
 301         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 302         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 303         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 304         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 305
 306         switch (audio->mode) {
 307         case TVAUDIO_FM_MONO:
 308         case TVAUDIO_FM_BG_STEREO:
 309                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 310                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 311                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 312                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 313                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 314                 break;
 315         case TVAUDIO_FM_K_STEREO:
 316                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 317                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 318                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 319                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 320                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 321                 break;
 322         case TVAUDIO_NICAM_FM:
 323                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 324                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 325                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 326                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 327                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 328                 break;
 329         case TVAUDIO_NICAM_AM:
 330                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 331                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 332                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 333                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 334                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 335                 break;
 336         case TVAUDIO_FM_SAT_STEREO:
 337                 /* not implemented (yet) */
 338                 break;
 339         }
 340 }
 341
 342 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 343 {
 344         if (dev->thread.scan1 == dev->thread.scan2 &&
 345             !kthread_should_stop()) {
 346                 if (timeout < 0) {
 347                         set_current_state(TASK_INTERRUPTIBLE);
 348                         schedule();
 349                 } else {
 350                         schedule_timeout_interruptible
 351                                                 (msecs_to_jiffies(timeout));
 352                 }
 353         }
 354         return dev->thread.scan1 != dev->thread.scan2;
 355 }
 356
 357 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 358 {
 359         __s32 left,right,value;
 360
 361         if (audio_debug > 1) {
 362                 int i;
 363                 dprintk("debug %d:",scan->carr);
 364                 for (i = -150; i <= 150; i += 30) {
 365                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 366                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 367                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 368                                 return -1;
 369                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 370                         if (0 == i)
 371                                 printk("  #  %6d  # ",value >> 16);
 372                         else
 373                                 printk(" %6d",value >> 16);
 374                 }
 375                 printk("\n");
 376         }
 377         if (dev->tvnorm->id & scan->std) {
 378                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 379                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 380                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 381                         return -1;
 382                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 383
 384                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 385                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 386                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 387                         return -1;
 388                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 389
 390                 left >>= 16;
 391                 right >>= 16;
 392                 value = left > right ? left - right : right - left;
 393                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 394                         scan->carr / 1000, scan->carr % 1000,
 395                         scan->name, value, left, right);
 396         } else {
 397                 value = 0;
 398                 dprintk("skipping %d.%03d MHz [%4s]\n",
 399                         scan->carr / 1000, scan->carr % 1000, scan->name);
 400         }
 401         return value;
 402 }
 403
 404
 405 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 406 {
 407         __u32 idp, nicam, nicam_status;
 408         int retval = -1;
 409
 410         switch (audio->mode) {
 411         case TVAUDIO_FM_MONO:
 412                 return V4L2_TUNER_SUB_MONO;
 413         case TVAUDIO_FM_K_STEREO:
 414         case TVAUDIO_FM_BG_STEREO:
 415                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 416                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 417                 if (0x03 == (idp & 0x03))
 418                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 419                 else if (0x05 == (idp & 0x05))
 420                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 421                 else if (0x01 == (idp & 0x01))
 422                         retval = V4L2_TUNER_SUB_MONO;
 423                 break;
 424         case TVAUDIO_FM_SAT_STEREO:
 425                 /* not implemented (yet) */
 426                 break;
 427         case TVAUDIO_NICAM_FM:
 428         case TVAUDIO_NICAM_AM:
 429                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 430                 dprintk("getstereo: nicam=0x%x\n",nicam);
 431                 if (nicam & 0x1) {
 432                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 433                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 434
 435                         switch (nicam_status & 0x03) {
 436                             case 0x01:
 437                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 438                                 break;
 439                             case 0x02:
 440                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 441                                 break;
 442                             default:
 443                                 retval = V4L2_TUNER_SUB_MONO;
 444                         }
 445                 } else {
 446                         /* No nicam detected */
 447                 }
 448                 break;
 449         }
 450         if (retval != -1)
 451                 dprintk("found audio subchannels:%s%s%s%s\n",
 452                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 453                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 454                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 455                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 456         return retval;
 457 }
 458
 459 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 460                              u32 mode)
 461 {
 462         static char *name[] = {
 463                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 464                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 465                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 466                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 467                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 468         };
 469         static u32 fm[] = {
 470                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 471                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 472                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 473                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 474                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 475         };
 476         u32 reg;
 477
 478         switch (audio->mode) {
 479         case TVAUDIO_FM_MONO:
 480                 /* nothing to do ... */
 481                 break;
 482         case TVAUDIO_FM_K_STEREO:
 483         case TVAUDIO_FM_BG_STEREO:
 484         case TVAUDIO_NICAM_AM:
 485         case TVAUDIO_NICAM_FM:
 486                 dprintk("setstereo [fm] => %s\n",
 487                         name[ mode % ARRAY_SIZE(name) ]);
 488                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 489                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 490                 break;
 491         case TVAUDIO_FM_SAT_STEREO:
 492                 /* Not implemented */
 493                 break;
 494         }
 495         return 0;
 496 }
 497
 498 static int tvaudio_thread(void *data)
 499 {
 500         struct saa7134_dev *dev = data;
 501         int carr_vals[ARRAY_SIZE(mainscan)];
 502         unsigned int i, audio, nscan;
 503         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 504
 505         allow_signal(SIGTERM);
 506         for (;;) {
 507                 tvaudio_sleep(dev,-1);
 508                 if (kthread_should_stop() || signal_pending(current))
 509                         goto done;
 510
 511         restart:
 512                 dev->thread.scan1 = dev->thread.scan2;
 513                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 514                 dev->tvaudio  = NULL;
 515                 tvaudio_init(dev);
 516                 if (dev->ctl_automute)
 517                         dev->automute = 1;
 518                 mute_input_7134(dev);
 519
 520                 /* give the tuner some time */
 521                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 522                         goto restart;
 523
 524                 max1 = 0;
 525                 max2 = 0;
 526                 nscan = 0;
 527                 carrier = 0;
 528                 default_carrier = 0;
 529                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 530                         if (!(dev->tvnorm->id & mainscan[i].std))
 531                                 continue;
 532                         if (!default_carrier)
 533                                 default_carrier = mainscan[i].carr;
 534                         nscan++;
 535                 }
 536
 537                 if (1 == nscan) {
 538                         /* only one candidate -- skip scan ;) */
 539                         dprintk("only one main carrier candidate - skipping scan\n");
 540                         max1 = 12345;
 541                         carrier = default_carrier;
 542                 } else {
 543                         /* scan for the main carrier */
 544                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 545                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 546                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 547                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 548                                 if (dev->thread.scan1 != dev->thread.scan2)
 549                                         goto restart;
 550                         }
 551                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 552                                 if (max1 < carr_vals[i]) {
 553                                         max2 = max1;
 554                                         max1 = carr_vals[i];
 555                                         carrier = mainscan[i].carr;
 556                                 } else if (max2 < carr_vals[i]) {
 557                                         max2 = carr_vals[i];
 558                                 }
 559                         }
 560                 }
 561
 562                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 563                         /* found good carrier */
 564                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 565                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 566                                 max1, max2);
 567                         dev->last_carrier = carrier;
 568
 569                 } else if (0 != dev->last_carrier) {
 570                         /* no carrier -- try last detected one as fallback */
 571                         carrier = dev->last_carrier;
 572                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 573                                "using %d.%03d MHz [last detected]\n",
 574                                dev->name, carrier/1000, carrier%1000);
 575
 576                 } else {
 577                         /* no carrier + no fallback -- use default */
 578                         carrier = default_carrier;
 579                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 580                                "using %d.%03d MHz [default]\n",
 581                                dev->name, carrier/1000, carrier%1000);
 582                 }
 583                 tvaudio_setcarrier(dev,carrier,carrier);
 584                 dev->automute = 0;
 585                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 586                 saa7134_tvaudio_setmute(dev);
 587                 /* find the exact tv audio norm */
 588                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 589                         if (dev->tvnorm->id != UNSET &&
 590                                 !(dev->tvnorm->id & tvaudio[i].std))
 591                                 continue;
 592                         if (tvaudio[i].carr1 != carrier)
 593                                 continue;
 594                         /* Note: at least the primary carrier is right here */
 595                         if (UNSET == audio)
 596                                 audio = i;
 597                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 598                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 599                                 goto restart;
 600                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 601                                 audio = i;
 602                                 break;
 603                         }
 604                 }
 605                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 606                 if (UNSET == audio)
 607                         continue;
 608                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 609
 610                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 611                 dev->tvaudio = &tvaudio[audio];
 612
 613                 lastmode = 42;
 614                 for (;;) {
 615                         if (tvaudio_sleep(dev,5000))
 616                                 goto restart;
 617                         if (kthread_should_stop() || signal_pending(current))
 618                                 break;
 619                         if (UNSET == dev->thread.mode) {
 620                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 621                                 mode = saa7134_tvaudio_rx2mode(rx);
 622                         } else {
 623                                 mode = dev->thread.mode;
 624                         }
 625                         if (lastmode != mode) {
 626                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 627                                 lastmode = mode;
 628                         }
 629                 }
 630         }
 631
 632  done:
 633         return 0;
 634 }
 635
 636 /* ------------------------------------------------------------------ */
 637 /* saa7133 / saa7135 code                                             */
 638
 639 static char *stdres[0x20] = {
 640         [0x00] = "no standard detected",
 641         [0x01] = "B/G (in progress)",
 642         [0x02] = "D/K (in progress)",
 643         [0x03] = "M (in progress)",
 644
 645         [0x04] = "B/G A2",
 646         [0x05] = "B/G NICAM",
 647         [0x06] = "D/K A2 (1)",
 648         [0x07] = "D/K A2 (2)",
 649         [0x08] = "D/K A2 (3)",
 650         [0x09] = "D/K NICAM",
 651         [0x0a] = "L NICAM",
 652         [0x0b] = "I NICAM",
 653
 654         [0x0c] = "M Korea",
 655         [0x0d] = "M BTSC ",
 656         [0x0e] = "M EIAJ",
 657
 658         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 659         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 660         [0x11] = "FM radio / IF sel / 50 deemp",
 661         [0x12] = "FM radio / IF sel / 75 deemp",
 662
 663         [0x13 ... 0x1e ] = "unknown",
 664         [0x1f] = "??? [in progress]",
 665 };
 666
 667 #define DSP_RETRY 32
 668 #define DSP_DELAY 16
 669
 670 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 671 {
 672         int state, count = DSP_RETRY;
 673
 674         state = saa_readb(SAA7135_DSP_RWSTATE);
 675         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 676                 printk("%s: dsp access error\n",dev->name);
 677                 /* FIXME: send ack ... */
 678                 return -EIO;
 679         }
 680         while (0 == (state & bit)) {
 681                 if (unlikely(0 == count)) {
 682                         printk("%s: dsp access wait timeout [bit=%s]\n",
 683                                dev->name,
 684                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 685                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 686                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 687                                "???");
 688                         return -EIO;
 689                 }
 690                 saa_wait(DSP_DELAY);
 691                 state = saa_readb(SAA7135_DSP_RWSTATE);
 692                 count--;
 693         }
 694         return 0;
 695 }
 696
 697
 698 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 699 {
 700         int err;
 701
 702         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 703         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 704         if (err < 0)
 705                 return err;
 706         saa_writel(reg,value);
 707         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 708         if (err < 0)
 709                 return err;
 710         return 0;
 711 }
 712
 713 static int getstereo_7133(struct saa7134_dev *dev)
 714 {
 715         int retval = V4L2_TUNER_SUB_MONO;
 716         u32 value;
 717
 718         value = saa_readl(0x528 >> 2);
 719         if (value & 0x20)
 720                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 721         if (value & 0x40)
 722                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 723         return retval;
 724 }
 725
 726 static int mute_input_7133(struct saa7134_dev *dev)
 727 {
 728         u32 reg = 0;
 729         u32 xbarin, xbarout;
 730         int mask;
 731         struct saa7134_input *in;
 732
 733         xbarin = 0x03;
 734         switch (dev->input->amux) {
 735         case TV:
 736                 reg = 0x02;
 737                 xbarin = 0;
 738                 break;
 739         case LINE1:
 740                 reg = 0x00;
 741                 break;
 742         case LINE2:
 743         case LINE2_LEFT:
 744                 reg = 0x09;
 745                 break;
 746         }
 747         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 748         if (dev->ctl_mute) {
 749                 reg = 0x07;
 750                 xbarout = 0xbbbbbb;
 751         } else
 752                 xbarout = 0xbbbb10;
 753         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 754
 755         saa_writel(0x594 >> 2, reg);
 756
 757
 758         /* switch gpio-connected external audio mux */
 759         if (0 != card(dev).gpiomask) {
 760                 mask = card(dev).gpiomask;
 761
 762                 if (card(dev).mute.name && dev->ctl_mute)
 763                         in = &card(dev).mute;
 764                 else
 765                         in = dev->input;
 766
 767                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 768                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 769                 saa7134_track_gpio(dev,in->name);
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int tvaudio_thread_ddep(void *data)
 776 {
 777         struct saa7134_dev *dev = data;
 778         u32 value, norms, clock;
 779
 780         allow_signal(SIGTERM);
 781
 782         clock = saa7134_boards[dev->board].audio_clock;
 783         if (UNSET != audio_clock_override)
 784                 clock = audio_clock_override;
 785         saa_writel(0x598 >> 2, clock);
 786
 787         /* unmute */
 788         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 789         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 790
 791         for (;;) {
 792                 tvaudio_sleep(dev,-1);
 793                 if (kthread_should_stop() || signal_pending(current))
 794                         goto done;
 795
 796         restart:
 797                 dev->thread.scan1 = dev->thread.scan2;
 798                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 799
 800                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 801                         /* insmod option override */
 802                         norms = (audio_ddep << 2) | 0x01;
 803                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 804                 } else if (&card(dev).radio == dev->input) {
 805                         dprintk("FM Radio\n");
 806                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 807                                 norms = (0x11 << 2) | 0x01;
 808                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 809                         } else {
 810                                 norms = (0x0f << 2) | 0x01;
 811                         }
 812                 } else {
 813                         /* (let chip) scan for sound carrier */
 814                         norms = 0;
 815                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 816                                 norms |= 0x04;
 817                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 818                                 norms |= 0x20;
 819                         if (dev->tvnorm->id & V4L2_STD_DK)
 820                                 norms |= 0x08;
 821                         if (dev->tvnorm->id & V4L2_STD_MN)
 822                                 norms |= 0x40;
 823                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 824                                 norms |= 0x10;
 825                         if (0 == norms)
 826                                 norms = 0x7c; /* all */
 827                         dprintk("scanning:%s%s%s%s%s\n",
 828                                 (norms & 0x04) ? " B/G"  : "",
 829                                 (norms & 0x08) ? " D/K"  : "",
 830                                 (norms & 0x10) ? " L/L'" : "",
 831                                 (norms & 0x20) ? " I"    : "",
 832                                 (norms & 0x40) ? " M"    : "");
 833                 }
 834
 835                 /* kick automatic standard detection */
 836                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 837                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 838
 839                 /* setup crossbars */
 840                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 841                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 842
 843                 if (tvaudio_sleep(dev,3000))
 844                         goto restart;
 845                 value = saa_readl(0x528 >> 2) & 0xffffff;
 846
 847                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 848                         value, stdres[value & 0x1f],
 849                         (value & 0x000020) ? ",stereo" : "",
 850                         (value & 0x000040) ? ",dual"   : "");
 851                 dprintk("detailed status: "
 852                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 853                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 854                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 855                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 856                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 857
 858                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 859                         (value & 0x001000) ? " SAP carrier "            : "",
 860                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 861                         (value & 0x004000) ? " SAP noise mute "         : "",
 862                         (value & 0x008000) ? " VDSP "                   : "",
 863
 864                         (value & 0x010000) ? " NICST "                  : "",
 865                         (value & 0x020000) ? " NICDU "                  : "",
 866                         (value & 0x040000) ? " NICAM muted "            : "",
 867                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 868
 869                         (value & 0x100000) ? " init done "              : "");
 870         }
 871
 872  done:
 873         return 0;
 874 }
 875
 876 /* ------------------------------------------------------------------ */
 877 /* common stuff + external entry points                               */
 878
 879 void saa7134_enable_i2s(struct saa7134_dev *dev)
 880 {
 881         int i2s_format;
 882
 883         if (!card_is_empress(dev))
 884                 return;
 885         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 886
 887         /* enable I2S audio output for the mpeg encoder */
 888         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 889         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 890         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 891         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 892 }
 893
 894 int saa7134_tvaudio_rx2mode(u32 rx)
 895 {
 896         u32 mode;
 897
 898         mode = V4L2_TUNER_MODE_MONO;
 899         if (rx & V4L2_TUNER_SUB_STEREO)
 900                 mode = V4L2_TUNER_MODE_STEREO;
 901         else if (rx & V4L2_TUNER_SUB_LANG1)
 902                 mode = V4L2_TUNER_MODE_LANG1;
 903         else if (rx & V4L2_TUNER_SUB_LANG2)
 904                 mode = V4L2_TUNER_MODE_LANG2;
 905         return mode;
 906 }
 907
 908 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 909 {
 910         switch (dev->pci->device) {
 911         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 912         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 913                 mute_input_7134(dev);
 914                 break;
 915         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 916         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 917                 mute_input_7133(dev);
 918                 break;
 919         }
 920 }
 921
 922 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 923                               struct saa7134_input *in)
 924 {
 925         dev->input = in;
 926         switch (dev->pci->device) {
 927         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 928         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 929                 mute_input_7134(dev);
 930                 break;
 931         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 932         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 933                 mute_input_7133(dev);
 934                 break;
 935         }
 936         saa7134_enable_i2s(dev);
 937 }
 938
 939 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 940 {
 941         switch (dev->pci->device) {
 942         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 943                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 944                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 945                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 946                 break;
 947         }
 948 }
 949
 950 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 951 {
 952         int retval = V4L2_TUNER_SUB_MONO;
 953
 954         switch (dev->pci->device) {
 955         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 956                 if (dev->tvaudio)
 957                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 958                 break;
 959         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 960         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 961                 retval = getstereo_7133(dev);
 962                 break;
 963         }
 964         return retval;
 965 }
 966
 967 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 968 {
 969         int (*my_thread)(void *data) = NULL;
 970
 971         switch (dev->pci->device) {
 972         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 973                 my_thread = tvaudio_thread;
 974                 break;
 975         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 976         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 977                 my_thread = tvaudio_thread_ddep;
 978                 break;
 979         }
 980
 981         dev->thread.thread = NULL;
 982         if (my_thread) {
 983                 /* start tvaudio thread */
 984                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
 985                 if (IS_ERR(dev->thread.thread)) {
 986                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 987                                dev->name);
 988                         /* XXX: missing error handling here */
 989                 }
 990                 saa7134_tvaudio_do_scan(dev);
 991         }
 992
 993         saa7134_enable_i2s(dev);
 994         return 0;
 995 }
 996
 997 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 998 {
 999         /* shutdown tvaudio thread */
1000         if (dev->thread.thread)
1001                 kthread_stop(dev->thread.thread);
1002
1003         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1004         return 0;
1005 }
1006
1007 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1008 {
1009         if (dev->input->amux != TV) {
1010                 dprintk("sound IF not in use, skipping scan\n");
1011                 dev->automute = 0;
1012                 saa7134_tvaudio_setmute(dev);
1013         } else if (dev->thread.thread) {
1014                 dev->thread.mode = UNSET;
1015                 dev->thread.scan2++;
1016                 wake_up_process(dev->thread.thread);
1017         } else {
1018                 dev->automute = 0;
1019                 saa7134_tvaudio_setmute(dev);
1020         }
1021         return 0;
1022 }
1023
1024 EXPORT_SYMBOL(saa_dsp_writel);
1025 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1026
1027 /* ----------------------------------------------------------- */
1028 /*
1029  * Local variables:
1030  * c-basic-offset: 8
1031  * End:
1032  */