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 static void mute_input_7134(struct saa7134_dev *dev)
 211 {
 212         unsigned int mute;
 213         struct saa7134_input *in;
 214         int ausel=0, ics=0, ocs=0;
 215         int mask;
 216
 217         /* look what is to do ... */
 218         in   = dev->input;
 219         mute = (dev->ctl_mute ||
 220                 (dev->automute  &&  (&card(dev).radio) != in));
 221         if (card(dev).mute.name) {
 222                 /*
 223                  * 7130 - we'll mute using some unconnected audio input
 224                  * 7134 - we'll probably should switch external mux with gpio
 225                  */
 226                 if (mute)
 227                         in = &card(dev).mute;
 228         }
 229
 230         if (dev->hw_mute  == mute &&
 231                 dev->hw_input == in) {
 232                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 233                         mute,in->name);
 234                 return;
 235         }
 236
 237         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 238                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 239         dev->hw_mute  = mute;
 240         dev->hw_input = in;
 241
 242         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 243                 /* 7134 mute */
 244                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xbf : 0xbb);
 245
 246         /* switch internal audio mux */
 247         switch (in->amux) {
 248         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 249         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 250         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 251         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 252         }
 253         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 254         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 255         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 256         // for oss, we need to change the clock configuration
 257         if (in->amux == TV)
 258                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 259         else
 260                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 261
 262         /* switch gpio-connected external audio mux */
 263         if (0 == card(dev).gpiomask)
 264                 return;
 265
 266         mask = card(dev).gpiomask;
 267         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 268         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 269         saa7134_track_gpio(dev,in->name);
 270 }
 271
 272 static void tvaudio_setmode(struct saa7134_dev *dev,
 273                             struct saa7134_tvaudio *audio,
 274                             char *note)
 275 {
 276         int acpf, tweak = 0;
 277
 278         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 279                 acpf = 0x19066;
 280         } else {
 281                 acpf = 0x1e000;
 282         }
 283         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 284                 tweak = audio_clock_tweak;
 285
 286         if (note)
 287                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 288                         note,audio->name,
 289                         audio->carr1 / 1000, audio->carr1 % 1000,
 290                         audio->carr2 / 1000, audio->carr2 % 1000,
 291                         acpf, tweak);
 292
 293         acpf += tweak;
 294         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 295         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 296         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 297         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 298
 299         switch (audio->mode) {
 300         case TVAUDIO_FM_MONO:
 301         case TVAUDIO_FM_BG_STEREO:
 302                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 303                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 304                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 305                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 306                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 307                 break;
 308         case TVAUDIO_FM_K_STEREO:
 309                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 310                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 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_NICAM_FM:
 316                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 317                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 318                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 319                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 320                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 321                 break;
 322         case TVAUDIO_NICAM_AM:
 323                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 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_FM_SAT_STEREO:
 330                 /* not implemented (yet) */
 331                 break;
 332         }
 333 }
 334
 335 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 336 {
 337         DECLARE_WAITQUEUE(wait, current);
 338
 339         add_wait_queue(&dev->thread.wq, &wait);
 340         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 341                 if (timeout < 0) {
 342                         set_current_state(TASK_INTERRUPTIBLE);
 343                         schedule();
 344                 } else {
 345                         set_current_state(TASK_INTERRUPTIBLE);
 346                         schedule_timeout(msecs_to_jiffies(timeout));
 347                 }
 348         }
 349         remove_wait_queue(&dev->thread.wq, &wait);
 350         return dev->thread.scan1 != dev->thread.scan2;
 351 }
 352
 353 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 354 {
 355         __s32 left,right,value;
 356
 357         if (audio_debug > 1) {
 358                 int i;
 359                 dprintk("debug %d:",scan->carr);
 360                 for (i = -150; i <= 150; i += 30) {
 361                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 362                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 363                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 364                                 return -1;
 365                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 366                         if (0 == i)
 367                                 printk("  #  %6d  # ",value >> 16);
 368                         else
 369                                 printk(" %6d",value >> 16);
 370                 }
 371                 printk("\n");
 372         }
 373
 374         if (dev->tvnorm->id & scan->std) {
 375                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 376                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 377                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 378                         return -1;
 379                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 380
 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                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 386
 387                 left >>= 16;
 388                 right >>= 16;
 389                 value = left > right ? left - right : right - left;
 390                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 391                         scan->carr / 1000, scan->carr % 1000,
 392                         scan->name, value, left, right);
 393         } else {
 394                 value = 0;
 395                 dprintk("skipping %d.%03d MHz [%4s]\n",
 396                         scan->carr / 1000, scan->carr % 1000, scan->name);
 397         }
 398         return value;
 399 }
 400
 401
 402 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 403 {
 404         __u32 idp, nicam, nicam_status;
 405         int retval = -1;
 406
 407         switch (audio->mode) {
 408         case TVAUDIO_FM_MONO:
 409                 return V4L2_TUNER_SUB_MONO;
 410         case TVAUDIO_FM_K_STEREO:
 411         case TVAUDIO_FM_BG_STEREO:
 412                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 413                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 414                 if (0x03 == (idp & 0x03))
 415                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 416                 else if (0x05 == (idp & 0x05))
 417                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 418                 else if (0x01 == (idp & 0x01))
 419                         retval = V4L2_TUNER_SUB_MONO;
 420                 break;
 421         case TVAUDIO_FM_SAT_STEREO:
 422                 /* not implemented (yet) */
 423                 break;
 424         case TVAUDIO_NICAM_FM:
 425         case TVAUDIO_NICAM_AM:
 426                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 427                 dprintk("getstereo: nicam=0x%x\n",nicam);
 428                 if (nicam & 0x1) {
 429                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 430                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 431
 432                         switch (nicam_status & 0x03) {
 433                             case 0x01:
 434                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 435                                 break;
 436                             case 0x02:
 437                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 438                                 break;
 439                             default:
 440                                 retval = V4L2_TUNER_SUB_MONO;
 441                         }
 442                 } else {
 443                         /* No nicam detected */
 444                 }
 445                 break;
 446         }
 447         if (retval != -1)
 448                 dprintk("found audio subchannels:%s%s%s%s\n",
 449                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 450                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 451                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 452                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 453         return retval;
 454 }
 455
 456 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 457                              u32 mode)
 458 {
 459         static char *name[] = {
 460                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 461                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 462                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 463                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 464         };
 465         static u32 fm[] = {
 466                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 467                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 468                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 469                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 470         };
 471         u32 reg;
 472
 473         switch (audio->mode) {
 474         case TVAUDIO_FM_MONO:
 475                 /* nothing to do ... */
 476                 break;
 477         case TVAUDIO_FM_K_STEREO:
 478         case TVAUDIO_FM_BG_STEREO:
 479         case TVAUDIO_NICAM_AM:
 480         case TVAUDIO_NICAM_FM:
 481                 dprintk("setstereo [fm] => %s\n",
 482                         name[ mode % ARRAY_SIZE(name) ]);
 483                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 484                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 485                 break;
 486         case TVAUDIO_FM_SAT_STEREO:
 487                 /* Not implemented */
 488                 break;
 489         }
 490         return 0;
 491 }
 492
 493 static int tvaudio_thread(void *data)
 494 {
 495         struct saa7134_dev *dev = data;
 496         int carr_vals[ARRAY_SIZE(mainscan)];
 497         unsigned int i, audio, nscan;
 498         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 499
 500         daemonize("%s", dev->name);
 501         allow_signal(SIGTERM);
 502         for (;;) {
 503                 tvaudio_sleep(dev,-1);
 504                 if (dev->thread.shutdown || signal_pending(current))
 505                         goto done;
 506
 507         restart:
 508                 dev->thread.scan1 = dev->thread.scan2;
 509                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 510                 dev->tvaudio  = NULL;
 511                 tvaudio_init(dev);
 512                 if (dev->ctl_automute)
 513                         dev->automute = 1;
 514                 mute_input_7134(dev);
 515
 516                 /* give the tuner some time */
 517                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 518                         goto restart;
 519
 520                 max1 = 0;
 521                 max2 = 0;
 522                 nscan = 0;
 523                 carrier = 0;
 524                 default_carrier = 0;
 525                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 526                         if (!(dev->tvnorm->id & mainscan[i].std))
 527                                 continue;
 528                         if (!default_carrier)
 529                                 default_carrier = mainscan[i].carr;
 530                         nscan++;
 531                 }
 532
 533                 if (1 == nscan) {
 534                         /* only one candidate -- skip scan ;) */
 535                         max1 = 12345;
 536                         carrier = default_carrier;
 537                 } else {
 538                         /* scan for the main carrier */
 539                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 540                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 541                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 542                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 543                                 if (dev->thread.scan1 != dev->thread.scan2)
 544                                         goto restart;
 545                         }
 546                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 547                                 if (max1 < carr_vals[i]) {
 548                                         max2 = max1;
 549                                         max1 = carr_vals[i];
 550                                         carrier = mainscan[i].carr;
 551                                 } else if (max2 < carr_vals[i]) {
 552                                         max2 = carr_vals[i];
 553                                 }
 554                         }
 555                 }
 556
 557                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 558                         /* found good carrier */
 559                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 560                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 561                                 max1, max2);
 562                         dev->last_carrier = carrier;
 563
 564                 } else if (0 != dev->last_carrier) {
 565                         /* no carrier -- try last detected one as fallback */
 566                         carrier = dev->last_carrier;
 567                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 568                                "using %d.%03d MHz [last detected]\n",
 569                                dev->name, carrier/1000, carrier%1000);
 570
 571                 } else {
 572                         /* no carrier + no fallback -- use default */
 573                         carrier = default_carrier;
 574                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 575                                "using %d.%03d MHz [default]\n",
 576                                dev->name, carrier/1000, carrier%1000);
 577                 }
 578                 tvaudio_setcarrier(dev,carrier,carrier);
 579                 dev->automute = 0;
 580                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 581                 saa7134_tvaudio_setmute(dev);
 582
 583                 /* find the exact tv audio norm */
 584                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 585                         if (dev->tvnorm->id != UNSET &&
 586                                 !(dev->tvnorm->id & tvaudio[i].std))
 587                                 continue;
 588                         if (tvaudio[i].carr1 != carrier)
 589                                 continue;
 590
 591                         if (UNSET == audio)
 592                                 audio = i;
 593                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 594                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 595                                 goto restart;
 596                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 597                                 audio = i;
 598                                 break;
 599                         }
 600                 }
 601                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 602                 if (UNSET == audio)
 603                         continue;
 604                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 605                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 606                 dev->tvaudio = &tvaudio[audio];
 607
 608                 lastmode = 42;
 609                 for (;;) {
 610                         if (tvaudio_sleep(dev,5000))
 611                                 goto restart;
 612                         if (dev->thread.shutdown || signal_pending(current))
 613                                 break;
 614                         if (UNSET == dev->thread.mode) {
 615                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 616                                 mode = saa7134_tvaudio_rx2mode(rx);
 617                         } else {
 618                                 mode = dev->thread.mode;
 619                         }
 620                         if (lastmode != mode) {
 621                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 622                                 lastmode = mode;
 623                         }
 624                 }
 625         }
 626
 627  done:
 628         complete_and_exit(&dev->thread.exit, 0);
 629         return 0;
 630 }
 631
 632 /* ------------------------------------------------------------------ */
 633 /* saa7133 / saa7135 code                                             */
 634
 635 static char *stdres[0x20] = {
 636         [0x00] = "no standard detected",
 637         [0x01] = "B/G (in progress)",
 638         [0x02] = "D/K (in progress)",
 639         [0x03] = "M (in progress)",
 640
 641         [0x04] = "B/G A2",
 642         [0x05] = "B/G NICAM",
 643         [0x06] = "D/K A2 (1)",
 644         [0x07] = "D/K A2 (2)",
 645         [0x08] = "D/K A2 (3)",
 646         [0x09] = "D/K NICAM",
 647         [0x0a] = "L NICAM",
 648         [0x0b] = "I NICAM",
 649
 650         [0x0c] = "M Korea",
 651         [0x0d] = "M BTSC ",
 652         [0x0e] = "M EIAJ",
 653
 654         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 655         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 656         [0x11] = "FM radio / IF sel / 50 deemp",
 657         [0x12] = "FM radio / IF sel / 75 deemp",
 658
 659         [0x13 ... 0x1e ] = "unknown",
 660         [0x1f] = "??? [in progress]",
 661 };
 662
 663 #define DSP_RETRY 32
 664 #define DSP_DELAY 16
 665
 666 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 667 {
 668         int state, count = DSP_RETRY;
 669
 670         state = saa_readb(SAA7135_DSP_RWSTATE);
 671         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 672                 printk("%s: dsp access error\n",dev->name);
 673                 /* FIXME: send ack ... */
 674                 return -EIO;
 675         }
 676         while (0 == (state & bit)) {
 677                 if (unlikely(0 == count)) {
 678                         printk("%s: dsp access wait timeout [bit=%s]\n",
 679                                dev->name,
 680                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 681                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 682                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 683                                "???");
 684                         return -EIO;
 685                 }
 686                 saa_wait(DSP_DELAY);
 687                 state = saa_readb(SAA7135_DSP_RWSTATE);
 688                 count--;
 689         }
 690         return 0;
 691 }
 692
 693
 694 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 695 {
 696         int err;
 697
 698         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 699         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 700         if (err < 0)
 701                 return err;
 702         saa_writel(reg,value);
 703         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 704         if (err < 0)
 705                 return err;
 706         return 0;
 707 }
 708
 709 static int getstereo_7133(struct saa7134_dev *dev)
 710 {
 711         int retval = V4L2_TUNER_SUB_MONO;
 712         u32 value;
 713
 714         value = saa_readl(0x528 >> 2);
 715         if (value & 0x20)
 716                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 717         if (value & 0x40)
 718                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 719         return retval;
 720 }
 721
 722 static int mute_input_7133(struct saa7134_dev *dev)
 723 {
 724         u32 reg = 0;
 725         u32 xbarin, xbarout;
 726         int mask;
 727         struct saa7134_input *in;
 728
 729         /* Hac 0506 route OSS sound simultanously  */
 730         xbarin = 0x03;
 731         switch (dev->input->amux) {
 732         case TV:
 733                 reg = 0x02;
 734                 xbarin = 0;
 735                 break;
 736         case LINE1:
 737                 reg = 0x00;
 738                 break;
 739         case LINE2:
 740         case LINE2_LEFT:
 741                 reg = 0x09;
 742                 break;
 743         }
 744         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 745         if (dev->ctl_mute) {
 746                 reg = 0x07;
 747                 xbarout = 0xbbbbbb;
 748         } else
 749                 xbarout = 0xbbbb10;
 750         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 751
 752         saa_writel(0x594 >> 2, reg);
 753
 754
 755         /* switch gpio-connected external audio mux */
 756         if (0 != card(dev).gpiomask) {
 757                 mask = card(dev).gpiomask;
 758
 759                 if (card(dev).mute.name && dev->ctl_mute)
 760                         in = &card(dev).mute;
 761                 else
 762                         in = dev->input;
 763
 764                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 765                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 766                 saa7134_track_gpio(dev,in->name);
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int tvaudio_thread_ddep(void *data)
 773 {
 774         struct saa7134_dev *dev = data;
 775         u32 value, norms, clock;
 776
 777         daemonize("%s", dev->name);
 778         allow_signal(SIGTERM);
 779
 780         clock = saa7134_boards[dev->board].audio_clock;
 781         if (UNSET != audio_clock_override)
 782                 clock = audio_clock_override;
 783         saa_writel(0x598 >> 2, clock);
 784
 785         /* unmute */
 786         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 787         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 788
 789         for (;;) {
 790                 tvaudio_sleep(dev,-1);
 791                 if (dev->thread.shutdown || signal_pending(current))
 792                         goto done;
 793
 794         restart:
 795                 dev->thread.scan1 = dev->thread.scan2;
 796                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 797
 798                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 799                         /* insmod option override */
 800                         norms = (audio_ddep << 2) | 0x01;
 801                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 802                 } else if (&card(dev).radio == dev->input) {
 803                         dprintk("FM Radio\n");
 804                         norms = (0x0f << 2) | 0x01;
 805                 } else {
 806                         /* (let chip) scan for sound carrier */
 807                         norms = 0;
 808                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 809                                 dprintk("PAL scan\n");
 810                                 norms |= 0x2c; /* B/G + D/K + I */
 811                         }
 812                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 813                                 dprintk("NTSC scan\n");
 814                                 norms |= 0x40; /* M */
 815                         }
 816                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 817                                 dprintk("SECAM scan\n");
 818                                 norms |= 0x18; /* L + D/K */
 819                         }
 820                         if (0 == norms)
 821                                 norms = 0x7c; /* all */
 822                         dprintk("scanning:%s%s%s%s%s\n",
 823                                 (norms & 0x04) ? " B/G"  : "",
 824                                 (norms & 0x08) ? " D/K"  : "",
 825                                 (norms & 0x10) ? " L/L'" : "",
 826                                 (norms & 0x20) ? " I"    : "",
 827                                 (norms & 0x40) ? " M"    : "");
 828                 }
 829
 830                 /* kick automatic standard detection */
 831                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 832                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 833
 834                 /* setup crossbars */
 835                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 836                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 837
 838                 if (tvaudio_sleep(dev,3000))
 839                         goto restart;
 840                 value = saa_readl(0x528 >> 2) & 0xffffff;
 841
 842                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 843                         value, stdres[value & 0x1f],
 844                         (value & 0x000020) ? ",stereo" : "",
 845                         (value & 0x000040) ? ",dual"   : "");
 846                 dprintk("detailed status: "
 847                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 848                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 849                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 850                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 851                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 852
 853                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 854                         (value & 0x001000) ? " SAP carrier "            : "",
 855                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 856                         (value & 0x004000) ? " SAP noise mute "         : "",
 857                         (value & 0x008000) ? " VDSP "                   : "",
 858
 859                         (value & 0x010000) ? " NICST "                  : "",
 860                         (value & 0x020000) ? " NICDU "                  : "",
 861                         (value & 0x040000) ? " NICAM muted "            : "",
 862                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 863
 864                         (value & 0x100000) ? " init done "              : "");
 865         }
 866
 867  done:
 868         complete_and_exit(&dev->thread.exit, 0);
 869         return 0;
 870 }
 871
 872 /* ------------------------------------------------------------------ */
 873 /* common stuff + external entry points                               */
 874
 875 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 876 {
 877         int i2s_format;
 878
 879         if (!card_is_empress(dev))
 880                 return;
 881         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 882
 883         /* enable I2S audio output for the mpeg encoder */
 884         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 885         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 886         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 887         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 888 }
 889
 890 int saa7134_tvaudio_rx2mode(u32 rx)
 891 {
 892         u32 mode;
 893
 894         mode = V4L2_TUNER_MODE_MONO;
 895         if (rx & V4L2_TUNER_SUB_STEREO)
 896                 mode = V4L2_TUNER_MODE_STEREO;
 897         else if (rx & V4L2_TUNER_SUB_LANG1)
 898                 mode = V4L2_TUNER_MODE_LANG1;
 899         else if (rx & V4L2_TUNER_SUB_LANG2)
 900                 mode = V4L2_TUNER_MODE_LANG2;
 901         return mode;
 902 }
 903
 904 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 905 {
 906         switch (dev->pci->device) {
 907         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 908         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 909                 mute_input_7134(dev);
 910                 break;
 911         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 912         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 913                 mute_input_7133(dev);
 914                 break;
 915         }
 916 }
 917
 918 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 919                               struct saa7134_input *in)
 920 {
 921         dev->input = in;
 922         switch (dev->pci->device) {
 923         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 924         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 925                 mute_input_7134(dev);
 926                 break;
 927         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 928         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 929                 mute_input_7133(dev);
 930                 break;
 931         }
 932         saa7134_enable_i2s(dev);
 933 }
 934
 935 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 936 {
 937         switch (dev->pci->device) {
 938         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 939                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 940                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 941                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 942                 break;
 943         }
 944 }
 945
 946 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 947 {
 948         int retval = V4L2_TUNER_SUB_MONO;
 949
 950         switch (dev->pci->device) {
 951         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 952                 if (dev->tvaudio)
 953                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 954                 break;
 955         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 956         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 957                 retval = getstereo_7133(dev);
 958                 break;
 959         }
 960         return retval;
 961 }
 962
 963 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 964 {
 965         DECLARE_MUTEX_LOCKED(sem);
 966         int (*my_thread)(void *data) = NULL;
 967
 968         switch (dev->pci->device) {
 969         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 970                 my_thread = tvaudio_thread;
 971                 break;
 972         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 973         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 974                 my_thread = tvaudio_thread_ddep;
 975                 break;
 976         }
 977
 978         dev->thread.pid = -1;
 979         if (my_thread) {
 980                 /* start tvaudio thread */
 981                 init_waitqueue_head(&dev->thread.wq);
 982                 init_completion(&dev->thread.exit);
 983                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 984                 if (dev->thread.pid < 0)
 985                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 986                                dev->name);
 987                 saa7134_tvaudio_do_scan(dev);
 988         }
 989
 990         saa7134_enable_i2s(dev);
 991         return 0;
 992 }
 993
 994 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 995 {
 996         /* shutdown tvaudio thread */
 997         if (dev->thread.pid >= 0) {
 998                 dev->thread.shutdown = 1;
 999                 wake_up_interruptible(&dev->thread.wq);
1000                 wait_for_completion(&dev->thread.exit);
1001         }
1002         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1003         return 0;
1004 }
1005
1006 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1007 {
1008         if (dev->thread.pid >= 0) {
1009                 dev->thread.mode = UNSET;
1010                 dev->thread.scan2++;
1011                 wake_up_interruptible(&dev->thread.wq);
1012         } else {
1013                 dev->automute = 0;
1014                 saa7134_tvaudio_setmute(dev);
1015         }
1016         return 0;
1017 }
1018
1019 /* ----------------------------------------------------------- */
1020 /*
1021  * Local variables:
1022  * c-basic-offset: 8
1023  * End:
1024  */