drivers/media/video/saa7134/saa7134-tvaudio.c

   1 /*
   2  * $Id: saa7134-tvaudio.c,v 1.30 2005/06/28 23:41:47 mkrufky Exp $
   3  *
   4  * device driver for philips saa7134 based TV cards
   5  * tv audio decoder (fm stereo, nicam, ...)
   6  *
   7  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/list.h>
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/delay.h>
  31 #include <linux/smp_lock.h>
  32 #include <asm/div64.h>
  33
  34 #include "saa7134-reg.h"
  35 #include "saa7134.h"
  36
  37 /* ------------------------------------------------------------------ */
  38
  39 static unsigned int audio_debug = 0;
  40 module_param(audio_debug, int, 0644);
  41 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  42
  43 static unsigned int audio_ddep = 0;
  44 module_param(audio_ddep, int, 0644);
  45 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  46
  47 static int audio_clock_override = UNSET;
  48 module_param(audio_clock_override, int, 0644);
  49
  50 static int audio_clock_tweak = 0;
  51 module_param(audio_clock_tweak, int, 0644);
  52 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  53
  54 #define dprintk(fmt, arg...)    if (audio_debug) \
  55         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  56 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  57         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  58
  59 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  60                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  61
  62 /* msecs */
  63 #define SCAN_INITIAL_DELAY     1000
  64 #define SCAN_SAMPLE_DELAY       200
  65 #define SCAN_SUBCARRIER_DELAY  2000
  66
  67 /* ------------------------------------------------------------------ */
  68 /* saa7134 code                                                       */
  69
  70 static struct mainscan {
  71         char         *name;
  72         v4l2_std_id  std;
  73         int          carr;
  74 } mainscan[] = {
  75         {
  76                 .name = "M",
  77                 .std  = V4L2_STD_NTSC | V4L2_STD_PAL_M,
  78                 .carr = 4500,
  79         },{
  80                 .name = "BG",
  81                 .std  = V4L2_STD_PAL_BG,
  82                 .carr = 5500,
  83         },{
  84                 .name = "I",
  85                 .std  = V4L2_STD_PAL_I,
  86                 .carr = 6000,
  87         },{
  88                 .name = "DKL",
  89                 .std  = V4L2_STD_PAL_DK | V4L2_STD_SECAM,
  90                 .carr = 6500,
  91         }
  92 };
  93
  94 static struct saa7134_tvaudio tvaudio[] = {
  95         {
  96                 .name          = "PAL-B/G FM-stereo",
  97                 .std           = V4L2_STD_PAL,
  98                 .mode          = TVAUDIO_FM_BG_STEREO,
  99                 .carr1         = 5500,
 100                 .carr2         = 5742,
 101         },{
 102                 .name          = "PAL-D/K1 FM-stereo",
 103                 .std           = V4L2_STD_PAL,
 104                 .carr1         = 6500,
 105                 .carr2         = 6258,
 106                 .mode          = TVAUDIO_FM_BG_STEREO,
 107         },{
 108                 .name          = "PAL-D/K2 FM-stereo",
 109                 .std           = V4L2_STD_PAL,
 110                 .carr1         = 6500,
 111                 .carr2         = 6742,
 112                 .mode          = TVAUDIO_FM_BG_STEREO,
 113         },{
 114                 .name          = "PAL-D/K3 FM-stereo",
 115                 .std           = V4L2_STD_PAL,
 116                 .carr1         = 6500,
 117                 .carr2         = 5742,
 118                 .mode          = TVAUDIO_FM_BG_STEREO,
 119         },{
 120                 .name          = "PAL-B/G NICAM",
 121                 .std           = V4L2_STD_PAL,
 122                 .carr1         = 5500,
 123                 .carr2         = 5850,
 124                 .mode          = TVAUDIO_NICAM_FM,
 125         },{
 126                 .name          = "PAL-I NICAM",
 127                 .std           = V4L2_STD_PAL,
 128                 .carr1         = 6000,
 129                 .carr2         = 6552,
 130                 .mode          = TVAUDIO_NICAM_FM,
 131         },{
 132                 .name          = "PAL-D/K NICAM",
 133                 .std           = V4L2_STD_PAL,
 134                 .carr1         = 6500,
 135                 .carr2         = 5850,
 136                 .mode          = TVAUDIO_NICAM_FM,
 137         },{
 138                 .name          = "SECAM-L NICAM",
 139                 .std           = V4L2_STD_SECAM,
 140                 .carr1         = 6500,
 141                 .carr2         = 5850,
 142                 .mode          = TVAUDIO_NICAM_AM,
 143         },{
 144                 .name          = "SECAM-D/K",
 145                 .std           = V4L2_STD_SECAM,
 146                 .carr1         = 6500,
 147                 .carr2         = -1,
 148                 .mode          = TVAUDIO_FM_MONO,
 149         },{
 150                 .name          = "NTSC-M",
 151                 .std           = V4L2_STD_NTSC,
 152                 .carr1         = 4500,
 153                 .carr2         = -1,
 154                 .mode          = TVAUDIO_FM_MONO,
 155         },{
 156                 .name          = "NTSC-A2 FM-stereo",
 157                 .std           = V4L2_STD_NTSC,
 158                 .carr1         = 4500,
 159                 .carr2         = 4724,
 160                 .mode          = TVAUDIO_FM_K_STEREO,
 161         }
 162 };
 163 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 164
 165 /* ------------------------------------------------------------------ */
 166
 167 static void tvaudio_init(struct saa7134_dev *dev)
 168 {
 169         int clock = saa7134_boards[dev->board].audio_clock;
 170
 171         if (UNSET != audio_clock_override)
 172                 clock = audio_clock_override;
 173
 174         /* init all audio registers */
 175         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 176         if (need_resched())
 177                 schedule();
 178         else
 179                 udelay(10);
 180
 181         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 182         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 183         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 184         // frame locked audio was reported not to be reliable
 185         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x02);
 186
 187         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 188         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 189         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 190         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 191 }
 192
 193 static u32 tvaudio_carr2reg(u32 carrier)
 194 {
 195         u64 a = carrier;
 196
 197         a <<= 24;
 198         do_div(a,12288);
 199         return a;
 200 }
 201
 202 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 203                                int primary, int secondary)
 204 {
 205         if (-1 == secondary)
 206                 secondary = primary;
 207         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 208         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 209 }
 210
 211 static void mute_input_7134(struct saa7134_dev *dev)
 212 {
 213         unsigned int mute;
 214         struct saa7134_input *in;
 215         int ausel=0, ics=0, ocs=0;
 216         int mask;
 217
 218         /* look what is to do ... */
 219         in   = dev->input;
 220         mute = (dev->ctl_mute ||
 221                 (dev->automute  &&  (&card(dev).radio) != in));
 222         if (card(dev).mute.name) {
 223                 /*
 224                  * 7130 - we'll mute using some unconnected audio input
 225                  * 7134 - we'll probably should switch external mux with gpio
 226                  */
 227                 if (mute)
 228                         in = &card(dev).mute;
 229         }
 230
 231         if (dev->hw_mute  == mute &&
 232                 dev->hw_input == in) {
 233                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 234                         mute,in->name);
 235                 return;
 236         }
 237
 238         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 239                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 240         dev->hw_mute  = mute;
 241         dev->hw_input = in;
 242
 243         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 244                 /* 7134 mute */
 245                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xbf : 0xbb);
 246
 247         /* switch internal audio mux */
 248         switch (in->amux) {
 249         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 250         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 251         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 252         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 253         }
 254         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 255         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 256         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 257         // for oss, we need to change the clock configuration
 258         if (in->amux == TV)
 259                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 260         else
 261                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 262
 263         /* switch gpio-connected external audio mux */
 264         if (0 == card(dev).gpiomask)
 265                 return;
 266
 267         mask = card(dev).gpiomask;
 268         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 269         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 270         saa7134_track_gpio(dev,in->name);
 271 }
 272
 273 static void tvaudio_setmode(struct saa7134_dev *dev,
 274                             struct saa7134_tvaudio *audio,
 275                             char *note)
 276 {
 277         int acpf, tweak = 0;
 278
 279         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 280                 acpf = 0x19066;
 281         } else {
 282                 acpf = 0x1e000;
 283         }
 284         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 285                 tweak = audio_clock_tweak;
 286
 287         if (note)
 288                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 289                         note,audio->name,
 290                         audio->carr1 / 1000, audio->carr1 % 1000,
 291                         audio->carr2 / 1000, audio->carr2 % 1000,
 292                         acpf, tweak);
 293
 294         acpf += tweak;
 295         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 296         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 297         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 298         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 299
 300         switch (audio->mode) {
 301         case TVAUDIO_FM_MONO:
 302         case TVAUDIO_FM_BG_STEREO:
 303                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 304                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 305                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 306                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 307                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 308                 break;
 309         case TVAUDIO_FM_K_STEREO:
 310                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 311                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 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_NICAM_FM:
 317                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 318                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 319                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 320                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 321                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 322                 break;
 323         case TVAUDIO_NICAM_AM:
 324                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 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_FM_SAT_STEREO:
 331                 /* not implemented (yet) */
 332                 break;
 333         }
 334 }
 335
 336 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 337 {
 338         DECLARE_WAITQUEUE(wait, current);
 339
 340         add_wait_queue(&dev->thread.wq, &wait);
 341         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 342                 if (timeout < 0) {
 343                         set_current_state(TASK_INTERRUPTIBLE);
 344                         schedule();
 345                 } else {
 346                         set_current_state(TASK_INTERRUPTIBLE);
 347                         schedule_timeout(msecs_to_jiffies(timeout));
 348                 }
 349         }
 350         remove_wait_queue(&dev->thread.wq, &wait);
 351         return dev->thread.scan1 != dev->thread.scan2;
 352 }
 353
 354 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 355 {
 356         __s32 left,right,value;
 357
 358         if (audio_debug > 1) {
 359                 int i;
 360                 dprintk("debug %d:",scan->carr);
 361                 for (i = -150; i <= 150; i += 30) {
 362                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 363                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 364                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 365                                 return -1;
 366                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 367                         if (0 == i)
 368                                 printk("  #  %6d  # ",value >> 16);
 369                         else
 370                                 printk(" %6d",value >> 16);
 371                 }
 372                 printk("\n");
 373         }
 374
 375         if (dev->tvnorm->id & scan->std) {
 376                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 377                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 378                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 379                         return -1;
 380                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 381
 382                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 383                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 384                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 385                         return -1;
 386                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 387
 388                 left >>= 16;
 389                 right >>= 16;
 390                 value = left > right ? left - right : right - left;
 391                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 392                         scan->carr / 1000, scan->carr % 1000,
 393                         scan->name, value, left, right);
 394         } else {
 395                 value = 0;
 396                 dprintk("skipping %d.%03d MHz [%4s]\n",
 397                         scan->carr / 1000, scan->carr % 1000, scan->name);
 398         }
 399         return value;
 400 }
 401
 402
 403 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 404 {
 405         __u32 idp, nicam, nicam_status;
 406         int retval = -1;
 407
 408         switch (audio->mode) {
 409         case TVAUDIO_FM_MONO:
 410                 return V4L2_TUNER_SUB_MONO;
 411         case TVAUDIO_FM_K_STEREO:
 412         case TVAUDIO_FM_BG_STEREO:
 413                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 414                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 415                 if (0x03 == (idp & 0x03))
 416                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 417                 else if (0x05 == (idp & 0x05))
 418                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 419                 else if (0x01 == (idp & 0x01))
 420                         retval = V4L2_TUNER_SUB_MONO;
 421                 break;
 422         case TVAUDIO_FM_SAT_STEREO:
 423                 /* not implemented (yet) */
 424                 break;
 425         case TVAUDIO_NICAM_FM:
 426         case TVAUDIO_NICAM_AM:
 427                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 428                 dprintk("getstereo: nicam=0x%x\n",nicam);
 429                 if (nicam & 0x1) {
 430                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 431                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 432
 433                         switch (nicam_status & 0x03) {
 434                             case 0x01:
 435                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 436                                 break;
 437                             case 0x02:
 438                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 439                                 break;
 440                             default:
 441                                 retval = V4L2_TUNER_SUB_MONO;
 442                         }
 443                 } else {
 444                         /* No nicam detected */
 445                 }
 446                 break;
 447         }
 448         if (retval != -1)
 449                 dprintk("found audio subchannels:%s%s%s%s\n",
 450                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 451                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 452                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 453                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 454         return retval;
 455 }
 456
 457 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 458                              u32 mode)
 459 {
 460         static char *name[] = {
 461                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 462                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 463                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 464                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 465         };
 466         static u32 fm[] = {
 467                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 468                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 469                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 470                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 471         };
 472         u32 reg;
 473
 474         switch (audio->mode) {
 475         case TVAUDIO_FM_MONO:
 476                 /* nothing to do ... */
 477                 break;
 478         case TVAUDIO_FM_K_STEREO:
 479         case TVAUDIO_FM_BG_STEREO:
 480         case TVAUDIO_NICAM_AM:
 481         case TVAUDIO_NICAM_FM:
 482                 dprintk("setstereo [fm] => %s\n",
 483                         name[ mode % ARRAY_SIZE(name) ]);
 484                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 485                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 486                 break;
 487         case TVAUDIO_FM_SAT_STEREO:
 488                 /* Not implemented */
 489                 break;
 490         }
 491         return 0;
 492 }
 493
 494 static int tvaudio_thread(void *data)
 495 {
 496         struct saa7134_dev *dev = data;
 497         int carr_vals[ARRAY_SIZE(mainscan)];
 498         unsigned int i, audio, nscan;
 499         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 500
 501         daemonize("%s", dev->name);
 502         allow_signal(SIGTERM);
 503         for (;;) {
 504                 tvaudio_sleep(dev,-1);
 505                 if (dev->thread.shutdown || signal_pending(current))
 506                         goto done;
 507
 508         restart:
 509                 dev->thread.scan1 = dev->thread.scan2;
 510                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 511                 dev->tvaudio  = NULL;
 512                 tvaudio_init(dev);
 513                 if (dev->ctl_automute)
 514                         dev->automute = 1;
 515                 mute_input_7134(dev);
 516
 517                 /* give the tuner some time */
 518                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 519                         goto restart;
 520
 521                 max1 = 0;
 522                 max2 = 0;
 523                 nscan = 0;
 524                 carrier = 0;
 525                 default_carrier = 0;
 526                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 527                         if (!(dev->tvnorm->id & mainscan[i].std))
 528                                 continue;
 529                         if (!default_carrier)
 530                                 default_carrier = mainscan[i].carr;
 531                         nscan++;
 532                 }
 533
 534                 if (1 == nscan) {
 535                         /* only one candidate -- skip scan ;) */
 536                         max1 = 12345;
 537                         carrier = default_carrier;
 538                 } else {
 539                         /* scan for the main carrier */
 540                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 541                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 542                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 543                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 544                                 if (dev->thread.scan1 != dev->thread.scan2)
 545                                         goto restart;
 546                         }
 547                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 548                                 if (max1 < carr_vals[i]) {
 549                                         max2 = max1;
 550                                         max1 = carr_vals[i];
 551                                         carrier = mainscan[i].carr;
 552                                 } else if (max2 < carr_vals[i]) {
 553                                         max2 = carr_vals[i];
 554                                 }
 555                         }
 556                 }
 557
 558                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 559                         /* found good carrier */
 560                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 561                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 562                                 max1, max2);
 563                         dev->last_carrier = carrier;
 564
 565                 } else if (0 != dev->last_carrier) {
 566                         /* no carrier -- try last detected one as fallback */
 567                         carrier = dev->last_carrier;
 568                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 569                                "using %d.%03d MHz [last detected]\n",
 570                                dev->name, carrier/1000, carrier%1000);
 571
 572                 } else {
 573                         /* no carrier + no fallback -- use default */
 574                         carrier = default_carrier;
 575                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 576                                "using %d.%03d MHz [default]\n",
 577                                dev->name, carrier/1000, carrier%1000);
 578                 }
 579                 tvaudio_setcarrier(dev,carrier,carrier);
 580                 dev->automute = 0;
 581                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 582                 saa7134_tvaudio_setmute(dev);
 583
 584                 /* find the exact tv audio norm */
 585                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 586                         if (dev->tvnorm->id != UNSET &&
 587                                 !(dev->tvnorm->id & tvaudio[i].std))
 588                                 continue;
 589                         if (tvaudio[i].carr1 != carrier)
 590                                 continue;
 591
 592                         if (UNSET == audio)
 593                                 audio = i;
 594                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 595                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 596                                 goto restart;
 597                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 598                                 audio = i;
 599                                 break;
 600                         }
 601                 }
 602                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 603                 if (UNSET == audio)
 604                         continue;
 605                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 606                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 607                 dev->tvaudio = &tvaudio[audio];
 608
 609                 lastmode = 42;
 610                 for (;;) {
 611                         if (tvaudio_sleep(dev,5000))
 612                                 goto restart;
 613                         if (dev->thread.shutdown || signal_pending(current))
 614                                 break;
 615                         if (UNSET == dev->thread.mode) {
 616                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 617                                 mode = saa7134_tvaudio_rx2mode(rx);
 618                         } else {
 619                                 mode = dev->thread.mode;
 620                         }
 621                         if (lastmode != mode) {
 622                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 623                                 lastmode = mode;
 624                         }
 625                 }
 626         }
 627
 628  done:
 629         complete_and_exit(&dev->thread.exit, 0);
 630         return 0;
 631 }
 632
 633 /* ------------------------------------------------------------------ */
 634 /* saa7133 / saa7135 code                                             */
 635
 636 static char *stdres[0x20] = {
 637         [0x00] = "no standard detected",
 638         [0x01] = "B/G (in progress)",
 639         [0x02] = "D/K (in progress)",
 640         [0x03] = "M (in progress)",
 641
 642         [0x04] = "B/G A2",
 643         [0x05] = "B/G NICAM",
 644         [0x06] = "D/K A2 (1)",
 645         [0x07] = "D/K A2 (2)",
 646         [0x08] = "D/K A2 (3)",
 647         [0x09] = "D/K NICAM",
 648         [0x0a] = "L NICAM",
 649         [0x0b] = "I NICAM",
 650
 651         [0x0c] = "M Korea",
 652         [0x0d] = "M BTSC ",
 653         [0x0e] = "M EIAJ",
 654
 655         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 656         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 657         [0x11] = "FM radio / IF sel / 50 deemp",
 658         [0x12] = "FM radio / IF sel / 75 deemp",
 659
 660         [0x13 ... 0x1e ] = "unknown",
 661         [0x1f] = "??? [in progress]",
 662 };
 663
 664 #define DSP_RETRY 32
 665 #define DSP_DELAY 16
 666
 667 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 668 {
 669         int state, count = DSP_RETRY;
 670
 671         state = saa_readb(SAA7135_DSP_RWSTATE);
 672         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 673                 printk("%s: dsp access error\n",dev->name);
 674                 /* FIXME: send ack ... */
 675                 return -EIO;
 676         }
 677         while (0 == (state & bit)) {
 678                 if (unlikely(0 == count)) {
 679                         printk("%s: dsp access wait timeout [bit=%s]\n",
 680                                dev->name,
 681                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 682                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 683                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 684                                "???");
 685                         return -EIO;
 686                 }
 687                 saa_wait(DSP_DELAY);
 688                 state = saa_readb(SAA7135_DSP_RWSTATE);
 689                 count--;
 690         }
 691         return 0;
 692 }
 693
 694
 695 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 696 {
 697         int err;
 698
 699         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 700         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 701         if (err < 0)
 702                 return err;
 703         saa_writel(reg,value);
 704         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 705         if (err < 0)
 706                 return err;
 707         return 0;
 708 }
 709
 710 static int getstereo_7133(struct saa7134_dev *dev)
 711 {
 712         int retval = V4L2_TUNER_SUB_MONO;
 713         u32 value;
 714
 715         value = saa_readl(0x528 >> 2);
 716         if (value & 0x20)
 717                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 718         if (value & 0x40)
 719                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 720         return retval;
 721 }
 722
 723 static int mute_input_7133(struct saa7134_dev *dev)
 724 {
 725         u32 reg = 0;
 726         u32 xbarin, xbarout;
 727         int mask;
 728         struct saa7134_input *in;
 729
 730         /* Hac 0506 route OSS sound simultanously  */
 731         xbarin = 0x03;
 732         switch (dev->input->amux) {
 733         case TV:
 734                 reg = 0x02;
 735                 xbarin = 0;
 736                 break;
 737         case LINE1:
 738                 reg = 0x00;
 739                 break;
 740         case LINE2:
 741         case LINE2_LEFT:
 742                 reg = 0x09;
 743                 break;
 744         }
 745         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 746         if (dev->ctl_mute) {
 747                 reg = 0x07;
 748                 xbarout = 0xbbbbbb;
 749         } else
 750                 xbarout = 0xbbbb10;
 751         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 752
 753         saa_writel(0x594 >> 2, reg);
 754
 755
 756         /* switch gpio-connected external audio mux */
 757         if (0 != card(dev).gpiomask) {
 758                 mask = card(dev).gpiomask;
 759
 760                 if (card(dev).mute.name && dev->ctl_mute)
 761                         in = &card(dev).mute;
 762                 else
 763                         in = dev->input;
 764
 765                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 766                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 767                 saa7134_track_gpio(dev,in->name);
 768         }
 769
 770         return 0;
 771 }
 772
 773 static int tvaudio_thread_ddep(void *data)
 774 {
 775         struct saa7134_dev *dev = data;
 776         u32 value, norms, clock;
 777
 778         daemonize("%s", dev->name);
 779         allow_signal(SIGTERM);
 780
 781         clock = saa7134_boards[dev->board].audio_clock;
 782         if (UNSET != audio_clock_override)
 783                 clock = audio_clock_override;
 784         saa_writel(0x598 >> 2, clock);
 785
 786         /* unmute */
 787         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 788         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 789
 790         for (;;) {
 791                 tvaudio_sleep(dev,-1);
 792                 if (dev->thread.shutdown || signal_pending(current))
 793                         goto done;
 794
 795         restart:
 796                 dev->thread.scan1 = dev->thread.scan2;
 797                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 798
 799                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 800                         /* insmod option override */
 801                         norms = (audio_ddep << 2) | 0x01;
 802                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 803                 } else if (&card(dev).radio == dev->input) {
 804                         dprintk("FM Radio\n");
 805                         norms = (0x0f << 2) | 0x01;
 806                 } else {
 807                         /* (let chip) scan for sound carrier */
 808                         norms = 0;
 809                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 810                                 dprintk("PAL scan\n");
 811                                 norms |= 0x2c; /* B/G + D/K + I */
 812                         }
 813                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 814                                 dprintk("NTSC scan\n");
 815                                 norms |= 0x40; /* M */
 816                         }
 817                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 818                                 dprintk("SECAM scan\n");
 819                                 norms |= 0x18; /* L + D/K */
 820                         }
 821                         if (0 == norms)
 822                                 norms = 0x7c; /* all */
 823                         dprintk("scanning:%s%s%s%s%s\n",
 824                                 (norms & 0x04) ? " B/G"  : "",
 825                                 (norms & 0x08) ? " D/K"  : "",
 826                                 (norms & 0x10) ? " L/L'" : "",
 827                                 (norms & 0x20) ? " I"    : "",
 828                                 (norms & 0x40) ? " M"    : "");
 829                 }
 830
 831                 /* kick automatic standard detection */
 832                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 833                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 834
 835                 /* setup crossbars */
 836                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 837                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 838
 839                 if (tvaudio_sleep(dev,3000))
 840                         goto restart;
 841                 value = saa_readl(0x528 >> 2) & 0xffffff;
 842
 843                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 844                         value, stdres[value & 0x1f],
 845                         (value & 0x000020) ? ",stereo" : "",
 846                         (value & 0x000040) ? ",dual"   : "");
 847                 dprintk("detailed status: "
 848                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 849                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 850                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 851                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 852                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 853
 854                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 855                         (value & 0x001000) ? " SAP carrier "            : "",
 856                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 857                         (value & 0x004000) ? " SAP noise mute "         : "",
 858                         (value & 0x008000) ? " VDSP "                   : "",
 859
 860                         (value & 0x010000) ? " NICST "                  : "",
 861                         (value & 0x020000) ? " NICDU "                  : "",
 862                         (value & 0x040000) ? " NICAM muted "            : "",
 863                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 864
 865                         (value & 0x100000) ? " init done "              : "");
 866         }
 867
 868  done:
 869         complete_and_exit(&dev->thread.exit, 0);
 870         return 0;
 871 }
 872
 873 /* ------------------------------------------------------------------ */
 874 /* common stuff + external entry points                               */
 875
 876 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 877 {
 878         int i2s_format;
 879
 880         if (!card_is_empress(dev))
 881                 return;
 882         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 883
 884         /* enable I2S audio output for the mpeg encoder */
 885         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 886         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 887         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 888         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 889 }
 890
 891 int saa7134_tvaudio_rx2mode(u32 rx)
 892 {
 893         u32 mode;
 894
 895         mode = V4L2_TUNER_MODE_MONO;
 896         if (rx & V4L2_TUNER_SUB_STEREO)
 897                 mode = V4L2_TUNER_MODE_STEREO;
 898         else if (rx & V4L2_TUNER_SUB_LANG1)
 899                 mode = V4L2_TUNER_MODE_LANG1;
 900         else if (rx & V4L2_TUNER_SUB_LANG2)
 901                 mode = V4L2_TUNER_MODE_LANG2;
 902         return mode;
 903 }
 904
 905 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 906 {
 907         switch (dev->pci->device) {
 908         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 909         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 910                 mute_input_7134(dev);
 911                 break;
 912         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 913         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 914                 mute_input_7133(dev);
 915                 break;
 916         }
 917 }
 918
 919 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 920                               struct saa7134_input *in)
 921 {
 922         dev->input = in;
 923         switch (dev->pci->device) {
 924         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 925         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 926                 mute_input_7134(dev);
 927                 break;
 928         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 929         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 930                 mute_input_7133(dev);
 931                 break;
 932         }
 933         saa7134_enable_i2s(dev);
 934 }
 935
 936 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 937 {
 938         switch (dev->pci->device) {
 939         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 940                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 941                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 942                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 943                 break;
 944         }
 945 }
 946
 947 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 948 {
 949         int retval = V4L2_TUNER_SUB_MONO;
 950
 951         switch (dev->pci->device) {
 952         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 953                 if (dev->tvaudio)
 954                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 955                 break;
 956         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 957         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 958                 retval = getstereo_7133(dev);
 959                 break;
 960         }
 961         return retval;
 962 }
 963
 964 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 965 {
 966         DECLARE_MUTEX_LOCKED(sem);
 967         int (*my_thread)(void *data) = NULL;
 968
 969         switch (dev->pci->device) {
 970         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 971                 my_thread = tvaudio_thread;
 972                 break;
 973         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 974         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 975                 my_thread = tvaudio_thread_ddep;
 976                 break;
 977         }
 978
 979         dev->thread.pid = -1;
 980         if (my_thread) {
 981                 /* start tvaudio thread */
 982                 init_waitqueue_head(&dev->thread.wq);
 983                 init_completion(&dev->thread.exit);
 984                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 985                 if (dev->thread.pid < 0)
 986                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 987                                dev->name);
 988                 saa7134_tvaudio_do_scan(dev);
 989         }
 990
 991         saa7134_enable_i2s(dev);
 992         return 0;
 993 }
 994
 995 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 996 {
 997         /* shutdown tvaudio thread */
 998         if (dev->thread.pid >= 0) {
 999                 dev->thread.shutdown = 1;
1000                 wake_up_interruptible(&dev->thread.wq);
1001                 wait_for_completion(&dev->thread.exit);
1002         }
1003         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1004         return 0;
1005 }
1006
1007 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1008 {
1009         if (dev->thread.pid >= 0) {
1010                 dev->thread.mode = UNSET;
1011                 dev->thread.scan2++;
1012                 wake_up_interruptible(&dev->thread.wq);
1013         } else {
1014                 dev->automute = 0;
1015                 saa7134_tvaudio_setmute(dev);
1016         }
1017         return 0;
1018 }
1019
1020 /* ----------------------------------------------------------- */
1021 /*
1022  * Local variables:
1023  * c-basic-offset: 8
1024  * End:
1025  */