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/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) {
 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         DECLARE_WAITQUEUE(wait, current);
 345
 346         add_wait_queue(&dev->thread.wq, &wait);
 347         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 348                 if (timeout < 0) {
 349                         set_current_state(TASK_INTERRUPTIBLE);
 350                         schedule();
 351                 } else {
 352                         schedule_timeout_interruptible
 353                                                 (msecs_to_jiffies(timeout));
 354                 }
 355         }
 356         remove_wait_queue(&dev->thread.wq, &wait);
 357         return dev->thread.scan1 != dev->thread.scan2;
 358 }
 359
 360 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 361 {
 362         __s32 left,right,value;
 363
 364         if (audio_debug > 1) {
 365                 int i;
 366                 dprintk("debug %d:",scan->carr);
 367                 for (i = -150; i <= 150; i += 30) {
 368                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 369                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 370                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 371                                 return -1;
 372                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 373                         if (0 == i)
 374                                 printk("  #  %6d  # ",value >> 16);
 375                         else
 376                                 printk(" %6d",value >> 16);
 377                 }
 378                 printk("\n");
 379         }
 380         if (dev->tvnorm->id & scan->std) {
 381                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 382                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 383                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 384                         return -1;
 385                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 386
 387                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 388                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 389                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 390                         return -1;
 391                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 392
 393                 left >>= 16;
 394                 right >>= 16;
 395                 value = left > right ? left - right : right - left;
 396                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 397                         scan->carr / 1000, scan->carr % 1000,
 398                         scan->name, value, left, right);
 399         } else {
 400                 value = 0;
 401                 dprintk("skipping %d.%03d MHz [%4s]\n",
 402                         scan->carr / 1000, scan->carr % 1000, scan->name);
 403         }
 404         return value;
 405 }
 406
 407
 408 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 409 {
 410         __u32 idp, nicam, nicam_status;
 411         int retval = -1;
 412
 413         switch (audio->mode) {
 414         case TVAUDIO_FM_MONO:
 415                 return V4L2_TUNER_SUB_MONO;
 416         case TVAUDIO_FM_K_STEREO:
 417         case TVAUDIO_FM_BG_STEREO:
 418                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 419                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 420                 if (0x03 == (idp & 0x03))
 421                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 422                 else if (0x05 == (idp & 0x05))
 423                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 424                 else if (0x01 == (idp & 0x01))
 425                         retval = V4L2_TUNER_SUB_MONO;
 426                 break;
 427         case TVAUDIO_FM_SAT_STEREO:
 428                 /* not implemented (yet) */
 429                 break;
 430         case TVAUDIO_NICAM_FM:
 431         case TVAUDIO_NICAM_AM:
 432                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 433                 dprintk("getstereo: nicam=0x%x\n",nicam);
 434                 if (nicam & 0x1) {
 435                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 436                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 437
 438                         switch (nicam_status & 0x03) {
 439                             case 0x01:
 440                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 441                                 break;
 442                             case 0x02:
 443                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 444                                 break;
 445                             default:
 446                                 retval = V4L2_TUNER_SUB_MONO;
 447                         }
 448                 } else {
 449                         /* No nicam detected */
 450                 }
 451                 break;
 452         }
 453         if (retval != -1)
 454                 dprintk("found audio subchannels:%s%s%s%s\n",
 455                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 456                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 457                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 458                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 459         return retval;
 460 }
 461
 462 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 463                              u32 mode)
 464 {
 465         static char *name[] = {
 466                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 467                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 468                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 469                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 470                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 471         };
 472         static u32 fm[] = {
 473                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 474                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 475                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 476                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 477                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 478         };
 479         u32 reg;
 480
 481         switch (audio->mode) {
 482         case TVAUDIO_FM_MONO:
 483                 /* nothing to do ... */
 484                 break;
 485         case TVAUDIO_FM_K_STEREO:
 486         case TVAUDIO_FM_BG_STEREO:
 487         case TVAUDIO_NICAM_AM:
 488         case TVAUDIO_NICAM_FM:
 489                 dprintk("setstereo [fm] => %s\n",
 490                         name[ mode % ARRAY_SIZE(name) ]);
 491                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 492                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 493                 break;
 494         case TVAUDIO_FM_SAT_STEREO:
 495                 /* Not implemented */
 496                 break;
 497         }
 498         return 0;
 499 }
 500
 501 static int tvaudio_thread(void *data)
 502 {
 503         struct saa7134_dev *dev = data;
 504         int carr_vals[ARRAY_SIZE(mainscan)];
 505         unsigned int i, audio, nscan;
 506         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 507
 508         daemonize("%s", dev->name);
 509         allow_signal(SIGTERM);
 510         for (;;) {
 511                 tvaudio_sleep(dev,-1);
 512                 if (dev->thread.shutdown || signal_pending(current))
 513                         goto done;
 514
 515         restart:
 516                 dev->thread.scan1 = dev->thread.scan2;
 517                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 518                 dev->tvaudio  = NULL;
 519                 tvaudio_init(dev);
 520                 if (dev->ctl_automute)
 521                         dev->automute = 1;
 522                 mute_input_7134(dev);
 523
 524                 /* give the tuner some time */
 525                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 526                         goto restart;
 527
 528                 max1 = 0;
 529                 max2 = 0;
 530                 nscan = 0;
 531                 carrier = 0;
 532                 default_carrier = 0;
 533                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 534                         if (!(dev->tvnorm->id & mainscan[i].std))
 535                                 continue;
 536                         if (!default_carrier)
 537                                 default_carrier = mainscan[i].carr;
 538                         nscan++;
 539                 }
 540
 541                 if (1 == nscan) {
 542                         /* only one candidate -- skip scan ;) */
 543                         dprintk("only one main carrier candidate - skipping scan\n");
 544                         max1 = 12345;
 545                         carrier = default_carrier;
 546                 } else {
 547                         /* scan for the main carrier */
 548                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 549                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 550                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 551                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 552                                 if (dev->thread.scan1 != dev->thread.scan2)
 553                                         goto restart;
 554                         }
 555                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 556                                 if (max1 < carr_vals[i]) {
 557                                         max2 = max1;
 558                                         max1 = carr_vals[i];
 559                                         carrier = mainscan[i].carr;
 560                                 } else if (max2 < carr_vals[i]) {
 561                                         max2 = carr_vals[i];
 562                                 }
 563                         }
 564                 }
 565
 566                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 567                         /* found good carrier */
 568                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 569                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 570                                 max1, max2);
 571                         dev->last_carrier = carrier;
 572
 573                 } else if (0 != dev->last_carrier) {
 574                         /* no carrier -- try last detected one as fallback */
 575                         carrier = dev->last_carrier;
 576                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 577                                "using %d.%03d MHz [last detected]\n",
 578                                dev->name, carrier/1000, carrier%1000);
 579
 580                 } else {
 581                         /* no carrier + no fallback -- use default */
 582                         carrier = default_carrier;
 583                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 584                                "using %d.%03d MHz [default]\n",
 585                                dev->name, carrier/1000, carrier%1000);
 586                 }
 587                 tvaudio_setcarrier(dev,carrier,carrier);
 588                 dev->automute = 0;
 589                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 590                 saa7134_tvaudio_setmute(dev);
 591                 /* find the exact tv audio norm */
 592                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 593                         if (dev->tvnorm->id != UNSET &&
 594                                 !(dev->tvnorm->id & tvaudio[i].std))
 595                                 continue;
 596                         if (tvaudio[i].carr1 != carrier)
 597                                 continue;
 598                         /* Note: at least the primary carrier is right here */
 599                         if (UNSET == audio)
 600                                 audio = i;
 601                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 602                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 603                                 goto restart;
 604                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 605                                 audio = i;
 606                                 break;
 607                         }
 608                 }
 609                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 610                 if (UNSET == audio)
 611                         continue;
 612                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 613
 614                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 615                 dev->tvaudio = &tvaudio[audio];
 616
 617                 lastmode = 42;
 618                 for (;;) {
 619                         if (tvaudio_sleep(dev,5000))
 620                                 goto restart;
 621                         if (dev->thread.shutdown || signal_pending(current))
 622                                 break;
 623                         if (UNSET == dev->thread.mode) {
 624                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 625                                 mode = saa7134_tvaudio_rx2mode(rx);
 626                         } else {
 627                                 mode = dev->thread.mode;
 628                         }
 629                         if (lastmode != mode) {
 630                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 631                                 lastmode = mode;
 632                         }
 633                 }
 634         }
 635
 636  done:
 637         complete_and_exit(&dev->thread.exit, 0);
 638         return 0;
 639 }
 640
 641 /* ------------------------------------------------------------------ */
 642 /* saa7133 / saa7135 code                                             */
 643
 644 static char *stdres[0x20] = {
 645         [0x00] = "no standard detected",
 646         [0x01] = "B/G (in progress)",
 647         [0x02] = "D/K (in progress)",
 648         [0x03] = "M (in progress)",
 649
 650         [0x04] = "B/G A2",
 651         [0x05] = "B/G NICAM",
 652         [0x06] = "D/K A2 (1)",
 653         [0x07] = "D/K A2 (2)",
 654         [0x08] = "D/K A2 (3)",
 655         [0x09] = "D/K NICAM",
 656         [0x0a] = "L NICAM",
 657         [0x0b] = "I NICAM",
 658
 659         [0x0c] = "M Korea",
 660         [0x0d] = "M BTSC ",
 661         [0x0e] = "M EIAJ",
 662
 663         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 664         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 665         [0x11] = "FM radio / IF sel / 50 deemp",
 666         [0x12] = "FM radio / IF sel / 75 deemp",
 667
 668         [0x13 ... 0x1e ] = "unknown",
 669         [0x1f] = "??? [in progress]",
 670 };
 671
 672 #define DSP_RETRY 32
 673 #define DSP_DELAY 16
 674
 675 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 676 {
 677         int state, count = DSP_RETRY;
 678
 679         state = saa_readb(SAA7135_DSP_RWSTATE);
 680         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 681                 printk("%s: dsp access error\n",dev->name);
 682                 /* FIXME: send ack ... */
 683                 return -EIO;
 684         }
 685         while (0 == (state & bit)) {
 686                 if (unlikely(0 == count)) {
 687                         printk("%s: dsp access wait timeout [bit=%s]\n",
 688                                dev->name,
 689                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 690                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 691                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 692                                "???");
 693                         return -EIO;
 694                 }
 695                 saa_wait(DSP_DELAY);
 696                 state = saa_readb(SAA7135_DSP_RWSTATE);
 697                 count--;
 698         }
 699         return 0;
 700 }
 701
 702
 703 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 704 {
 705         int err;
 706
 707         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 708         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 709         if (err < 0)
 710                 return err;
 711         saa_writel(reg,value);
 712         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 713         if (err < 0)
 714                 return err;
 715         return 0;
 716 }
 717
 718 static int getstereo_7133(struct saa7134_dev *dev)
 719 {
 720         int retval = V4L2_TUNER_SUB_MONO;
 721         u32 value;
 722
 723         value = saa_readl(0x528 >> 2);
 724         if (value & 0x20)
 725                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 726         if (value & 0x40)
 727                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 728         return retval;
 729 }
 730
 731 static int mute_input_7133(struct saa7134_dev *dev)
 732 {
 733         u32 reg = 0;
 734         u32 xbarin, xbarout;
 735         int mask;
 736         struct saa7134_input *in;
 737
 738         xbarin = 0x03;
 739         switch (dev->input->amux) {
 740         case TV:
 741                 reg = 0x02;
 742                 xbarin = 0;
 743                 break;
 744         case LINE1:
 745                 reg = 0x00;
 746                 break;
 747         case LINE2:
 748         case LINE2_LEFT:
 749                 reg = 0x09;
 750                 break;
 751         }
 752         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 753         if (dev->ctl_mute) {
 754                 reg = 0x07;
 755                 xbarout = 0xbbbbbb;
 756         } else
 757                 xbarout = 0xbbbb10;
 758         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 759
 760         saa_writel(0x594 >> 2, reg);
 761
 762
 763         /* switch gpio-connected external audio mux */
 764         if (0 != card(dev).gpiomask) {
 765                 mask = card(dev).gpiomask;
 766
 767                 if (card(dev).mute.name && dev->ctl_mute)
 768                         in = &card(dev).mute;
 769                 else
 770                         in = dev->input;
 771
 772                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 773                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 774                 saa7134_track_gpio(dev,in->name);
 775         }
 776
 777         return 0;
 778 }
 779
 780 static int tvaudio_thread_ddep(void *data)
 781 {
 782         struct saa7134_dev *dev = data;
 783         u32 value, norms, clock;
 784
 785         daemonize("%s", dev->name);
 786         allow_signal(SIGTERM);
 787
 788         clock = saa7134_boards[dev->board].audio_clock;
 789         if (UNSET != audio_clock_override)
 790                 clock = audio_clock_override;
 791         saa_writel(0x598 >> 2, clock);
 792
 793         /* unmute */
 794         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 795         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 796
 797         for (;;) {
 798                 tvaudio_sleep(dev,-1);
 799                 if (dev->thread.shutdown || signal_pending(current))
 800                         goto done;
 801
 802         restart:
 803                 dev->thread.scan1 = dev->thread.scan2;
 804                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 805
 806                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 807                         /* insmod option override */
 808                         norms = (audio_ddep << 2) | 0x01;
 809                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 810                 } else if (&card(dev).radio == dev->input) {
 811                         dprintk("FM Radio\n");
 812                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 813                                 norms = (0x11 << 2) | 0x01;
 814                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 815                         } else {
 816                                 norms = (0x0f << 2) | 0x01;
 817                         }
 818                 } else {
 819                         /* (let chip) scan for sound carrier */
 820                         norms = 0;
 821                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 822                                 norms |= 0x04;
 823                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 824                                 norms |= 0x20;
 825                         if (dev->tvnorm->id & V4L2_STD_DK)
 826                                 norms |= 0x08;
 827                         if (dev->tvnorm->id & V4L2_STD_MN)
 828                                 norms |= 0x40;
 829                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 830                                 norms |= 0x10;
 831                         if (0 == norms)
 832                                 norms = 0x7c; /* all */
 833                         dprintk("scanning:%s%s%s%s%s\n",
 834                                 (norms & 0x04) ? " B/G"  : "",
 835                                 (norms & 0x08) ? " D/K"  : "",
 836                                 (norms & 0x10) ? " L/L'" : "",
 837                                 (norms & 0x20) ? " I"    : "",
 838                                 (norms & 0x40) ? " M"    : "");
 839                 }
 840
 841                 /* kick automatic standard detection */
 842                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 843                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 844
 845                 /* setup crossbars */
 846                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 847                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 848
 849                 if (tvaudio_sleep(dev,3000))
 850                         goto restart;
 851                 value = saa_readl(0x528 >> 2) & 0xffffff;
 852
 853                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 854                         value, stdres[value & 0x1f],
 855                         (value & 0x000020) ? ",stereo" : "",
 856                         (value & 0x000040) ? ",dual"   : "");
 857                 dprintk("detailed status: "
 858                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 859                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 860                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 861                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 862                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 863
 864                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 865                         (value & 0x001000) ? " SAP carrier "            : "",
 866                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 867                         (value & 0x004000) ? " SAP noise mute "         : "",
 868                         (value & 0x008000) ? " VDSP "                   : "",
 869
 870                         (value & 0x010000) ? " NICST "                  : "",
 871                         (value & 0x020000) ? " NICDU "                  : "",
 872                         (value & 0x040000) ? " NICAM muted "            : "",
 873                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 874
 875                         (value & 0x100000) ? " init done "              : "");
 876         }
 877
 878  done:
 879         complete_and_exit(&dev->thread.exit, 0);
 880         return 0;
 881 }
 882
 883 /* ------------------------------------------------------------------ */
 884 /* common stuff + external entry points                               */
 885
 886 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 887 {
 888         int i2s_format;
 889
 890         if (!card_is_empress(dev))
 891                 return;
 892         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 893
 894         /* enable I2S audio output for the mpeg encoder */
 895         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 896         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 897         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 898         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 899 }
 900
 901 int saa7134_tvaudio_rx2mode(u32 rx)
 902 {
 903         u32 mode;
 904
 905         mode = V4L2_TUNER_MODE_MONO;
 906         if (rx & V4L2_TUNER_SUB_STEREO)
 907                 mode = V4L2_TUNER_MODE_STEREO;
 908         else if (rx & V4L2_TUNER_SUB_LANG1)
 909                 mode = V4L2_TUNER_MODE_LANG1;
 910         else if (rx & V4L2_TUNER_SUB_LANG2)
 911                 mode = V4L2_TUNER_MODE_LANG2;
 912         return mode;
 913 }
 914
 915 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 916 {
 917         switch (dev->pci->device) {
 918         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 919         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 920                 mute_input_7134(dev);
 921                 break;
 922         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 923         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 924                 mute_input_7133(dev);
 925                 break;
 926         }
 927 }
 928
 929 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 930                               struct saa7134_input *in)
 931 {
 932         dev->input = in;
 933         switch (dev->pci->device) {
 934         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 935         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 936                 mute_input_7134(dev);
 937                 break;
 938         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 939         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 940                 mute_input_7133(dev);
 941                 break;
 942         }
 943         saa7134_enable_i2s(dev);
 944 }
 945
 946 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 947 {
 948         switch (dev->pci->device) {
 949         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 950                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 951                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 952                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 953                 break;
 954         }
 955 }
 956
 957 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 958 {
 959         int retval = V4L2_TUNER_SUB_MONO;
 960
 961         switch (dev->pci->device) {
 962         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 963                 if (dev->tvaudio)
 964                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 965                 break;
 966         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 967         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 968                 retval = getstereo_7133(dev);
 969                 break;
 970         }
 971         return retval;
 972 }
 973
 974 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 975 {
 976         DECLARE_MUTEX_LOCKED(sem);
 977         int (*my_thread)(void *data) = NULL;
 978
 979         switch (dev->pci->device) {
 980         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 981                 my_thread = tvaudio_thread;
 982                 break;
 983         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 984         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 985                 my_thread = tvaudio_thread_ddep;
 986                 break;
 987         }
 988
 989         dev->thread.pid = -1;
 990         if (my_thread) {
 991                 /* start tvaudio thread */
 992                 init_waitqueue_head(&dev->thread.wq);
 993                 init_completion(&dev->thread.exit);
 994                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 995                 if (dev->thread.pid < 0)
 996                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 997                                dev->name);
 998                 saa7134_tvaudio_do_scan(dev);
 999         }
1000
1001         saa7134_enable_i2s(dev);
1002         return 0;
1003 }
1004
1005 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1006 {
1007         /* shutdown tvaudio thread */
1008         if (dev->thread.pid >= 0) {
1009                 dev->thread.shutdown = 1;
1010                 wake_up_interruptible(&dev->thread.wq);
1011                 wait_for_completion(&dev->thread.exit);
1012         }
1013         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1014         return 0;
1015 }
1016
1017 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1018 {
1019         if (dev->input->amux != TV) {
1020                 dprintk("sound IF not in use, skipping scan\n");
1021                 dev->automute = 0;
1022                 saa7134_tvaudio_setmute(dev);
1023         } else if (dev->thread.pid >= 0) {
1024                 dev->thread.mode = UNSET;
1025                 dev->thread.scan2++;
1026                 wake_up_interruptible(&dev->thread.wq);
1027         } else {
1028                 dev->automute = 0;
1029                 saa7134_tvaudio_setmute(dev);
1030         }
1031         return 0;
1032 }
1033
1034 EXPORT_SYMBOL(saa_dsp_writel);
1035 EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1036
1037 /* ----------------------------------------------------------- */
1038 /*
1039  * Local variables:
1040  * c-basic-offset: 8
1041  * End:
1042  */
1043