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

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * tv audio decoder (fm stereo, nicam, ...)
   5  *
   6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/moduleparam.h>
  27 #include <linux/kernel.h>
  28 #include <linux/slab.h>
  29 #include <linux/delay.h>
  30 #include <linux/smp_lock.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 = "M",
  76                 .std  = V4L2_STD_NTSC | V4L2_STD_PAL_M,
  77                 .carr = 4500,
  78         },{
  79                 .name = "BG",
  80                 .std  = V4L2_STD_PAL_BG,
  81                 .carr = 5500,
  82         },{
  83                 .name = "I",
  84                 .std  = V4L2_STD_PAL_I,
  85                 .carr = 6000,
  86         },{
  87                 .name = "DKL",
  88                 .std  = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
  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,
  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,
 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,
 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,
 115                 .carr1         = 6500,
 116                 .carr2         = 5742,
 117                 .mode          = TVAUDIO_FM_BG_STEREO,
 118         },{
 119                 .name          = "PAL-B/G NICAM",
 120                 .std           = V4L2_STD_PAL,
 121                 .carr1         = 5500,
 122                 .carr2         = 5850,
 123                 .mode          = TVAUDIO_NICAM_FM,
 124         },{
 125                 .name          = "PAL-I NICAM",
 126                 .std           = V4L2_STD_PAL,
 127                 .carr1         = 6000,
 128                 .carr2         = 6552,
 129                 .mode          = TVAUDIO_NICAM_FM,
 130         },{
 131                 .name          = "PAL-D/K NICAM",
 132                 .std           = V4L2_STD_PAL,
 133                 .carr1         = 6500,
 134                 .carr2         = 5850,
 135                 .mode          = TVAUDIO_NICAM_FM,
 136         },{
 137                 .name          = "SECAM-L NICAM",
 138                 .std           = V4L2_STD_SECAM,
 139                 .carr1         = 6500,
 140                 .carr2         = 5850,
 141                 .mode          = TVAUDIO_NICAM_AM,
 142         },{
 143                 .name          = "SECAM-D/K",
 144                 .std           = V4L2_STD_SECAM,
 145                 .carr1         = 6500,
 146                 .carr2         = -1,
 147                 .mode          = TVAUDIO_FM_MONO,
 148         },{
 149                 .name          = "NTSC-M",
 150                 .std           = V4L2_STD_NTSC,
 151                 .carr1         = 4500,
 152                 .carr2         = -1,
 153                 .mode          = TVAUDIO_FM_MONO,
 154         },{
 155                 .name          = "NTSC-A2 FM-stereo",
 156                 .std           = V4L2_STD_NTSC,
 157                 .carr1         = 4500,
 158                 .carr2         = 4724,
 159                 .mode          = TVAUDIO_FM_K_STEREO,
 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 was reported not to be reliable
 184         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x02);
 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         DECLARE_WAITQUEUE(wait, current);
 346
 347         add_wait_queue(&dev->thread.wq, &wait);
 348         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 349                 if (timeout < 0) {
 350                         set_current_state(TASK_INTERRUPTIBLE);
 351                         schedule();
 352                 } else {
 353                         schedule_timeout_interruptible
 354                                                 (msecs_to_jiffies(timeout));
 355                 }
 356         }
 357         remove_wait_queue(&dev->thread.wq, &wait);
 358         return dev->thread.scan1 != dev->thread.scan2;
 359 }
 360
 361 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 362 {
 363         __s32 left,right,value;
 364
 365         if (audio_debug > 1) {
 366                 int i;
 367                 dprintk("debug %d:",scan->carr);
 368                 for (i = -150; i <= 150; i += 30) {
 369                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 370                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 371                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 372                                 return -1;
 373                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 374                         if (0 == i)
 375                                 printk("  #  %6d  # ",value >> 16);
 376                         else
 377                                 printk(" %6d",value >> 16);
 378                 }
 379                 printk("\n");
 380         }
 381
 382         if (dev->tvnorm->id & scan->std) {
 383                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 384                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 385                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 386                         return -1;
 387                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 388
 389                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 390                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 391                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 392                         return -1;
 393                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 394
 395                 left >>= 16;
 396                 right >>= 16;
 397                 value = left > right ? left - right : right - left;
 398                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 399                         scan->carr / 1000, scan->carr % 1000,
 400                         scan->name, value, left, right);
 401         } else {
 402                 value = 0;
 403                 dprintk("skipping %d.%03d MHz [%4s]\n",
 404                         scan->carr / 1000, scan->carr % 1000, scan->name);
 405         }
 406         return value;
 407 }
 408
 409
 410 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 411 {
 412         __u32 idp, nicam, nicam_status;
 413         int retval = -1;
 414
 415         switch (audio->mode) {
 416         case TVAUDIO_FM_MONO:
 417                 return V4L2_TUNER_SUB_MONO;
 418         case TVAUDIO_FM_K_STEREO:
 419         case TVAUDIO_FM_BG_STEREO:
 420                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 421                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 422                 if (0x03 == (idp & 0x03))
 423                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 424                 else if (0x05 == (idp & 0x05))
 425                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 426                 else if (0x01 == (idp & 0x01))
 427                         retval = V4L2_TUNER_SUB_MONO;
 428                 break;
 429         case TVAUDIO_FM_SAT_STEREO:
 430                 /* not implemented (yet) */
 431                 break;
 432         case TVAUDIO_NICAM_FM:
 433         case TVAUDIO_NICAM_AM:
 434                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 435                 dprintk("getstereo: nicam=0x%x\n",nicam);
 436                 if (nicam & 0x1) {
 437                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 438                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 439
 440                         switch (nicam_status & 0x03) {
 441                             case 0x01:
 442                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 443                                 break;
 444                             case 0x02:
 445                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 446                                 break;
 447                             default:
 448                                 retval = V4L2_TUNER_SUB_MONO;
 449                         }
 450                 } else {
 451                         /* No nicam detected */
 452                 }
 453                 break;
 454         }
 455         if (retval != -1)
 456                 dprintk("found audio subchannels:%s%s%s%s\n",
 457                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 458                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 459                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 460                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 461         return retval;
 462 }
 463
 464 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 465                              u32 mode)
 466 {
 467         static char *name[] = {
 468                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 469                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 470                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 471                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 472         };
 473         static u32 fm[] = {
 474                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 475                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 476                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 477                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 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                         max1 = 12345;
 544                         carrier = default_carrier;
 545                 } else {
 546                         /* scan for the main carrier */
 547                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 548                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 549                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 550                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 551                                 if (dev->thread.scan1 != dev->thread.scan2)
 552                                         goto restart;
 553                         }
 554                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 555                                 if (max1 < carr_vals[i]) {
 556                                         max2 = max1;
 557                                         max1 = carr_vals[i];
 558                                         carrier = mainscan[i].carr;
 559                                 } else if (max2 < carr_vals[i]) {
 560                                         max2 = carr_vals[i];
 561                                 }
 562                         }
 563                 }
 564
 565                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 566                         /* found good carrier */
 567                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 568                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 569                                 max1, max2);
 570                         dev->last_carrier = carrier;
 571
 572                 } else if (0 != dev->last_carrier) {
 573                         /* no carrier -- try last detected one as fallback */
 574                         carrier = dev->last_carrier;
 575                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 576                                "using %d.%03d MHz [last detected]\n",
 577                                dev->name, carrier/1000, carrier%1000);
 578
 579                 } else {
 580                         /* no carrier + no fallback -- use default */
 581                         carrier = default_carrier;
 582                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 583                                "using %d.%03d MHz [default]\n",
 584                                dev->name, carrier/1000, carrier%1000);
 585                 }
 586                 tvaudio_setcarrier(dev,carrier,carrier);
 587                 dev->automute = 0;
 588                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 589                 saa7134_tvaudio_setmute(dev);
 590
 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
 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                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 614                 dev->tvaudio = &tvaudio[audio];
 615
 616                 lastmode = 42;
 617                 for (;;) {
 618                         if (tvaudio_sleep(dev,5000))
 619                                 goto restart;
 620                         if (dev->thread.shutdown || signal_pending(current))
 621                                 break;
 622                         if (UNSET == dev->thread.mode) {
 623                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 624                                 mode = saa7134_tvaudio_rx2mode(rx);
 625                         } else {
 626                                 mode = dev->thread.mode;
 627                         }
 628                         if (lastmode != mode) {
 629                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 630                                 lastmode = mode;
 631                         }
 632                 }
 633         }
 634
 635  done:
 636         complete_and_exit(&dev->thread.exit, 0);
 637         return 0;
 638 }
 639
 640 /* ------------------------------------------------------------------ */
 641 /* saa7133 / saa7135 code                                             */
 642
 643 static char *stdres[0x20] = {
 644         [0x00] = "no standard detected",
 645         [0x01] = "B/G (in progress)",
 646         [0x02] = "D/K (in progress)",
 647         [0x03] = "M (in progress)",
 648
 649         [0x04] = "B/G A2",
 650         [0x05] = "B/G NICAM",
 651         [0x06] = "D/K A2 (1)",
 652         [0x07] = "D/K A2 (2)",
 653         [0x08] = "D/K A2 (3)",
 654         [0x09] = "D/K NICAM",
 655         [0x0a] = "L NICAM",
 656         [0x0b] = "I NICAM",
 657
 658         [0x0c] = "M Korea",
 659         [0x0d] = "M BTSC ",
 660         [0x0e] = "M EIAJ",
 661
 662         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 663         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 664         [0x11] = "FM radio / IF sel / 50 deemp",
 665         [0x12] = "FM radio / IF sel / 75 deemp",
 666
 667         [0x13 ... 0x1e ] = "unknown",
 668         [0x1f] = "??? [in progress]",
 669 };
 670
 671 #define DSP_RETRY 32
 672 #define DSP_DELAY 16
 673
 674 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 675 {
 676         int state, count = DSP_RETRY;
 677
 678         state = saa_readb(SAA7135_DSP_RWSTATE);
 679         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 680                 printk("%s: dsp access error\n",dev->name);
 681                 /* FIXME: send ack ... */
 682                 return -EIO;
 683         }
 684         while (0 == (state & bit)) {
 685                 if (unlikely(0 == count)) {
 686                         printk("%s: dsp access wait timeout [bit=%s]\n",
 687                                dev->name,
 688                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 689                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 690                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 691                                "???");
 692                         return -EIO;
 693                 }
 694                 saa_wait(DSP_DELAY);
 695                 state = saa_readb(SAA7135_DSP_RWSTATE);
 696                 count--;
 697         }
 698         return 0;
 699 }
 700
 701
 702 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 703 {
 704         int err;
 705
 706         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 707         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 708         if (err < 0)
 709                 return err;
 710         saa_writel(reg,value);
 711         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 712         if (err < 0)
 713                 return err;
 714         return 0;
 715 }
 716
 717 static int getstereo_7133(struct saa7134_dev *dev)
 718 {
 719         int retval = V4L2_TUNER_SUB_MONO;
 720         u32 value;
 721
 722         value = saa_readl(0x528 >> 2);
 723         if (value & 0x20)
 724                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 725         if (value & 0x40)
 726                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 727         return retval;
 728 }
 729
 730 static int mute_input_7133(struct saa7134_dev *dev)
 731 {
 732         u32 reg = 0;
 733         u32 xbarin, xbarout;
 734         int mask;
 735         struct saa7134_input *in;
 736
 737         /* Hac 0506 route OSS sound simultanously  */
 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                         norms = (0x0f << 2) | 0x01;
 813                 } else {
 814                         /* (let chip) scan for sound carrier */
 815                         norms = 0;
 816                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 817                                 dprintk("PAL scan\n");
 818                                 norms |= 0x2c; /* B/G + D/K + I */
 819                         }
 820                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 821                                 dprintk("NTSC scan\n");
 822                                 norms |= 0x40; /* M */
 823                         }
 824                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 825                                 dprintk("SECAM scan\n");
 826                                 norms |= 0x18; /* L + D/K */
 827                         }
 828                         if (0 == norms)
 829                                 norms = 0x7c; /* all */
 830                         dprintk("scanning:%s%s%s%s%s\n",
 831                                 (norms & 0x04) ? " B/G"  : "",
 832                                 (norms & 0x08) ? " D/K"  : "",
 833                                 (norms & 0x10) ? " L/L'" : "",
 834                                 (norms & 0x20) ? " I"    : "",
 835                                 (norms & 0x40) ? " M"    : "");
 836                 }
 837
 838                 /* kick automatic standard detection */
 839                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 840                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 841
 842                 /* setup crossbars */
 843                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 844                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 845
 846                 if (tvaudio_sleep(dev,3000))
 847                         goto restart;
 848                 value = saa_readl(0x528 >> 2) & 0xffffff;
 849
 850                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 851                         value, stdres[value & 0x1f],
 852                         (value & 0x000020) ? ",stereo" : "",
 853                         (value & 0x000040) ? ",dual"   : "");
 854                 dprintk("detailed status: "
 855                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 856                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 857                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 858                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 859                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 860
 861                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 862                         (value & 0x001000) ? " SAP carrier "            : "",
 863                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 864                         (value & 0x004000) ? " SAP noise mute "         : "",
 865                         (value & 0x008000) ? " VDSP "                   : "",
 866
 867                         (value & 0x010000) ? " NICST "                  : "",
 868                         (value & 0x020000) ? " NICDU "                  : "",
 869                         (value & 0x040000) ? " NICAM muted "            : "",
 870                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 871
 872                         (value & 0x100000) ? " init done "              : "");
 873         }
 874
 875  done:
 876         complete_and_exit(&dev->thread.exit, 0);
 877         return 0;
 878 }
 879
 880 /* ------------------------------------------------------------------ */
 881 /* common stuff + external entry points                               */
 882
 883 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 884 {
 885         int i2s_format;
 886
 887         if (!card_is_empress(dev))
 888                 return;
 889         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 890
 891         /* enable I2S audio output for the mpeg encoder */
 892         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 893         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 894         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 895         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 896 }
 897
 898 int saa7134_tvaudio_rx2mode(u32 rx)
 899 {
 900         u32 mode;
 901
 902         mode = V4L2_TUNER_MODE_MONO;
 903         if (rx & V4L2_TUNER_SUB_STEREO)
 904                 mode = V4L2_TUNER_MODE_STEREO;
 905         else if (rx & V4L2_TUNER_SUB_LANG1)
 906                 mode = V4L2_TUNER_MODE_LANG1;
 907         else if (rx & V4L2_TUNER_SUB_LANG2)
 908                 mode = V4L2_TUNER_MODE_LANG2;
 909         return mode;
 910 }
 911
 912 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 913 {
 914         switch (dev->pci->device) {
 915         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 916         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 917                 mute_input_7134(dev);
 918                 break;
 919         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 920         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 921                 mute_input_7133(dev);
 922                 break;
 923         }
 924 }
 925
 926 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 927                               struct saa7134_input *in)
 928 {
 929         dev->input = in;
 930         switch (dev->pci->device) {
 931         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 932         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 933                 mute_input_7134(dev);
 934                 break;
 935         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 936         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 937                 mute_input_7133(dev);
 938                 break;
 939         }
 940         saa7134_enable_i2s(dev);
 941 }
 942
 943 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 944 {
 945         switch (dev->pci->device) {
 946         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 947                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 948                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 949                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 950                 break;
 951         }
 952 }
 953
 954 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 955 {
 956         int retval = V4L2_TUNER_SUB_MONO;
 957
 958         switch (dev->pci->device) {
 959         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 960                 if (dev->tvaudio)
 961                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 962                 break;
 963         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 964         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 965                 retval = getstereo_7133(dev);
 966                 break;
 967         }
 968         return retval;
 969 }
 970
 971 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 972 {
 973         DECLARE_MUTEX_LOCKED(sem);
 974         int (*my_thread)(void *data) = NULL;
 975
 976         switch (dev->pci->device) {
 977         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 978                 my_thread = tvaudio_thread;
 979                 break;
 980         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 981         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 982                 my_thread = tvaudio_thread_ddep;
 983                 break;
 984         }
 985
 986         dev->thread.pid = -1;
 987         if (my_thread) {
 988                 /* start tvaudio thread */
 989                 init_waitqueue_head(&dev->thread.wq);
 990                 init_completion(&dev->thread.exit);
 991                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 992                 if (dev->thread.pid < 0)
 993                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 994                                dev->name);
 995                 saa7134_tvaudio_do_scan(dev);
 996         }
 997
 998         saa7134_enable_i2s(dev);
 999         return 0;
1000 }
1001
1002 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1003 {
1004         /* shutdown tvaudio thread */
1005         if (dev->thread.pid >= 0) {
1006                 dev->thread.shutdown = 1;
1007                 wake_up_interruptible(&dev->thread.wq);
1008                 wait_for_completion(&dev->thread.exit);
1009         }
1010         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1011         return 0;
1012 }
1013
1014 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1015 {
1016         if (dev->thread.pid >= 0) {
1017                 dev->thread.mode = UNSET;
1018                 dev->thread.scan2++;
1019                 wake_up_interruptible(&dev->thread.wq);
1020         } else {
1021                 dev->automute = 0;
1022                 saa7134_tvaudio_setmute(dev);
1023         }
1024         return 0;
1025 }
1026
1027 EXPORT_SYMBOL(saa_dsp_writel);
1028
1029 /* ----------------------------------------------------------- */
1030 /*
1031  * Local variables:
1032  * c-basic-offset: 8
1033  * End:
1034  */
1035