drivers/media/pci/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 "saa7134.h"
  24 #include "saa7134-reg.h"
  25
  26 #include <linux/init.h>
  27 #include <linux/list.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/kthread.h>
  31 #include <linux/delay.h>
  32 #include <linux/freezer.h>
  33 #include <asm/div64.h>
  34
  35 /* ------------------------------------------------------------------ */
  36
  37 static unsigned int audio_debug;
  38 module_param(audio_debug, int, 0644);
  39 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  40
  41 static unsigned int audio_ddep;
  42 module_param(audio_ddep, int, 0644);
  43 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  44
  45 static int audio_clock_override = UNSET;
  46 module_param(audio_clock_override, int, 0644);
  47
  48 static int audio_clock_tweak;
  49 module_param(audio_clock_tweak, int, 0644);
  50 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  51
  52 #define audio_dbg(level, fmt, arg...) do { \
  53         if (audio_debug >= level) \
  54                 printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
  55         } while (0)
  56
  57 /* msecs */
  58 #define SCAN_INITIAL_DELAY     1000
  59 #define SCAN_SAMPLE_DELAY       200
  60 #define SCAN_SUBCARRIER_DELAY  2000
  61
  62 /* ------------------------------------------------------------------ */
  63 /* saa7134 code                                                       */
  64
  65 static struct mainscan {
  66         char         *name;
  67         v4l2_std_id  std;
  68         int          carr;
  69 } mainscan[] = {
  70         {
  71                 .name = "MN",
  72                 .std  = V4L2_STD_MN,
  73                 .carr = 4500,
  74         },{
  75                 .name = "BGH",
  76                 .std  = V4L2_STD_B | V4L2_STD_GH,
  77                 .carr = 5500,
  78         },{
  79                 .name = "I",
  80                 .std  = V4L2_STD_PAL_I,
  81                 .carr = 6000,
  82         },{
  83                 .name = "DKL",
  84                 .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  85                 .carr = 6500,
  86         }
  87 };
  88
  89 static struct saa7134_tvaudio tvaudio[] = {
  90         {
  91                 .name          = "PAL-B/G FM-stereo",
  92                 .std           = V4L2_STD_PAL_BG,
  93                 .mode          = TVAUDIO_FM_BG_STEREO,
  94                 .carr1         = 5500,
  95                 .carr2         = 5742,
  96         },{
  97                 .name          = "PAL-D/K1 FM-stereo",
  98                 .std           = V4L2_STD_PAL_DK,
  99                 .carr1         = 6500,
 100                 .carr2         = 6258,
 101                 .mode          = TVAUDIO_FM_BG_STEREO,
 102         },{
 103                 .name          = "PAL-D/K2 FM-stereo",
 104                 .std           = V4L2_STD_PAL_DK,
 105                 .carr1         = 6500,
 106                 .carr2         = 6742,
 107                 .mode          = TVAUDIO_FM_BG_STEREO,
 108         },{
 109                 .name          = "PAL-D/K3 FM-stereo",
 110                 .std           = V4L2_STD_PAL_DK,
 111                 .carr1         = 6500,
 112                 .carr2         = 5742,
 113                 .mode          = TVAUDIO_FM_BG_STEREO,
 114         },{
 115                 .name          = "PAL-B/G NICAM",
 116                 .std           = V4L2_STD_PAL_BG,
 117                 .carr1         = 5500,
 118                 .carr2         = 5850,
 119                 .mode          = TVAUDIO_NICAM_FM,
 120         },{
 121                 .name          = "PAL-I NICAM",
 122                 .std           = V4L2_STD_PAL_I,
 123                 .carr1         = 6000,
 124                 .carr2         = 6552,
 125                 .mode          = TVAUDIO_NICAM_FM,
 126         },{
 127                 .name          = "PAL-D/K NICAM",
 128                 .std           = V4L2_STD_PAL_DK,
 129                 .carr1         = 6500,
 130                 .carr2         = 5850,
 131                 .mode          = TVAUDIO_NICAM_FM,
 132         },{
 133                 .name          = "SECAM-L NICAM",
 134                 .std           = V4L2_STD_SECAM_L,
 135                 .carr1         = 6500,
 136                 .carr2         = 5850,
 137                 .mode          = TVAUDIO_NICAM_AM,
 138         },{
 139                 .name          = "SECAM-D/K NICAM",
 140                 .std           = V4L2_STD_SECAM_DK,
 141                 .carr1         = 6500,
 142                 .carr2         = 5850,
 143                 .mode          = TVAUDIO_NICAM_FM,
 144         },{
 145                 .name          = "NTSC-A2 FM-stereo",
 146                 .std           = V4L2_STD_NTSC,
 147                 .carr1         = 4500,
 148                 .carr2         = 4724,
 149                 .mode          = TVAUDIO_FM_K_STEREO,
 150         },{
 151                 .name          = "NTSC-M",
 152                 .std           = V4L2_STD_NTSC,
 153                 .carr1         = 4500,
 154                 .carr2         = -1,
 155                 .mode          = TVAUDIO_FM_MONO,
 156         }
 157 };
 158 #define TVAUDIO ARRAY_SIZE(tvaudio)
 159
 160 /* ------------------------------------------------------------------ */
 161
 162 static u32 tvaudio_carr2reg(u32 carrier)
 163 {
 164         u64 a = carrier;
 165
 166         a <<= 24;
 167         do_div(a,12288);
 168         return a;
 169 }
 170
 171 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 172                                int primary, int secondary)
 173 {
 174         if (-1 == secondary)
 175                 secondary = primary;
 176         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 177         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 178 }
 179
 180 #define SAA7134_MUTE_MASK 0xbb
 181 #define SAA7134_MUTE_ANALOG 0x04
 182 #define SAA7134_MUTE_I2S 0x40
 183
 184 static void mute_input_7134(struct saa7134_dev *dev)
 185 {
 186         unsigned int mute;
 187         struct saa7134_input *in;
 188         int ausel=0, ics=0, ocs=0;
 189         int mask;
 190
 191         /* look what is to do ... */
 192         in   = dev->input;
 193         mute = (dev->ctl_mute ||
 194                 (dev->automute  &&  (&card(dev).radio) != in));
 195         if (card(dev).mute.type) {
 196                 /*
 197                  * 7130 - we'll mute using some unconnected audio input
 198                  * 7134 - we'll probably should switch external mux with gpio
 199                  */
 200                 if (mute)
 201                         in = &card(dev).mute;
 202         }
 203
 204         if (dev->hw_mute  == mute &&
 205                 dev->hw_input == in && !dev->insuspend) {
 206                 audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
 207                           mute, saa7134_input_name[in->type]);
 208                 return;
 209         }
 210
 211         audio_dbg(1, "ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 212                   dev->ctl_mute, dev->automute,
 213                   saa7134_input_name[dev->input->type], mute,
 214                   saa7134_input_name[in->type]);
 215         dev->hw_mute  = mute;
 216         dev->hw_input = in;
 217
 218         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 219                 /* 7134 mute */
 220                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 221                                                     SAA7134_MUTE_MASK |
 222                                                     SAA7134_MUTE_ANALOG |
 223                                                     SAA7134_MUTE_I2S :
 224                                                     SAA7134_MUTE_MASK);
 225
 226         /* switch internal audio mux */
 227         switch (in->amux) {
 228         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 229         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 230         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 231         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 232         }
 233         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 234         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 235         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 236         // for oss, we need to change the clock configuration
 237         if (in->amux == TV)
 238                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 239         else
 240                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 241
 242         /* switch gpio-connected external audio mux */
 243         if (0 == card(dev).gpiomask)
 244                 return;
 245
 246         mask = card(dev).gpiomask;
 247         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 248         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 249         saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 250 }
 251
 252 static void tvaudio_setmode(struct saa7134_dev *dev,
 253                             struct saa7134_tvaudio *audio,
 254                             char *note)
 255 {
 256         int acpf, tweak = 0;
 257
 258         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 259                 acpf = 0x19066;
 260         } else {
 261                 acpf = 0x1e000;
 262         }
 263         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 264                 tweak = audio_clock_tweak;
 265
 266         if (note)
 267                 audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 268                         note, audio->name,
 269                         audio->carr1 / 1000, audio->carr1 % 1000,
 270                         audio->carr2 / 1000, audio->carr2 % 1000,
 271                         acpf, tweak);
 272
 273         acpf += tweak;
 274         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 275         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 276         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 277         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 278
 279         switch (audio->mode) {
 280         case TVAUDIO_FM_MONO:
 281         case TVAUDIO_FM_BG_STEREO:
 282                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 283                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 284                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 285                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 286                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 287                 break;
 288         case TVAUDIO_FM_K_STEREO:
 289                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 290                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 291                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 292                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 293                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 294                 break;
 295         case TVAUDIO_NICAM_FM:
 296                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 297                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 298                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 299                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 300                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 301                 break;
 302         case TVAUDIO_NICAM_AM:
 303                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 304                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 305                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 306                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 307                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 308                 break;
 309         case TVAUDIO_FM_SAT_STEREO:
 310                 /* not implemented (yet) */
 311                 break;
 312         }
 313 }
 314
 315 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 316 {
 317         if (dev->thread.scan1 == dev->thread.scan2 &&
 318             !kthread_should_stop()) {
 319                 if (timeout < 0) {
 320                         set_current_state(TASK_INTERRUPTIBLE);
 321                         schedule();
 322                 } else {
 323                         schedule_timeout_interruptible
 324                                                 (msecs_to_jiffies(timeout));
 325                 }
 326         }
 327         return dev->thread.scan1 != dev->thread.scan2;
 328 }
 329
 330 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 331 {
 332         __s32 left,right,value;
 333
 334         if (!(dev->tvnorm->id & scan->std)) {
 335                 value = 0;
 336                 audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
 337                           scan->carr / 1000, scan->carr % 1000, scan->name);
 338                 return 0;
 339         }
 340
 341         if (audio_debug > 1) {
 342                 int i;
 343                 audio_dbg(1, "debug %d:", scan->carr);
 344                 for (i = -150; i <= 150; i += 30) {
 345                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 346                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 347                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 348                                 return -1;
 349                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 350                         if (0 == i)
 351                                 pr_cont("  #  %6d  # ", value >> 16);
 352                         else
 353                                 pr_cont(" %6d", value >> 16);
 354                 }
 355                 pr_cont("\n");
 356         }
 357
 358         tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 359         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 360         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 361                 return -1;
 362         left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 363
 364         tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 365         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 366         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 367                 return -1;
 368         right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 369
 370         left >>= 16;
 371         right >>= 16;
 372         value = left > right ? left - right : right - left;
 373         audio_dbg(1, "scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 374                   scan->carr / 1000, scan->carr % 1000,
 375                   scan->name, value, left, right);
 376         return value;
 377 }
 378
 379
 380 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 381 {
 382         __u32 idp, nicam, nicam_status;
 383         int retval = -1;
 384
 385         switch (audio->mode) {
 386         case TVAUDIO_FM_MONO:
 387                 return V4L2_TUNER_SUB_MONO;
 388         case TVAUDIO_FM_K_STEREO:
 389         case TVAUDIO_FM_BG_STEREO:
 390                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 391                 audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
 392                 if (0x03 == (idp & 0x03))
 393                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 394                 else if (0x05 == (idp & 0x05))
 395                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 396                 else if (0x01 == (idp & 0x01))
 397                         retval = V4L2_TUNER_SUB_MONO;
 398                 break;
 399         case TVAUDIO_FM_SAT_STEREO:
 400                 /* not implemented (yet) */
 401                 break;
 402         case TVAUDIO_NICAM_FM:
 403         case TVAUDIO_NICAM_AM:
 404                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 405                 audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
 406                 if (nicam & 0x1) {
 407                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 408                         audio_dbg(1, "getstereo: nicam_status=0x%x\n",
 409                                   nicam_status);
 410
 411                         switch (nicam_status & 0x03) {
 412                             case 0x01:
 413                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 414                                 break;
 415                             case 0x02:
 416                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 417                                 break;
 418                             default:
 419                                 retval = V4L2_TUNER_SUB_MONO;
 420                         }
 421                 } else {
 422                         /* No nicam detected */
 423                 }
 424                 break;
 425         }
 426         if (retval != -1)
 427                 audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
 428                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 429                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 430                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 431                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 432         return retval;
 433 }
 434
 435 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 436                              u32 mode)
 437 {
 438         static char *name[] = {
 439                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 440                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 441                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 442                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 443                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 444         };
 445         static u32 fm[] = {
 446                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 447                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 448                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 449                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 450                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 451         };
 452         u32 reg;
 453
 454         switch (audio->mode) {
 455         case TVAUDIO_FM_MONO:
 456                 /* nothing to do ... */
 457                 break;
 458         case TVAUDIO_FM_K_STEREO:
 459         case TVAUDIO_FM_BG_STEREO:
 460         case TVAUDIO_NICAM_AM:
 461         case TVAUDIO_NICAM_FM:
 462                 audio_dbg(1, "setstereo [fm] => %s\n",
 463                           name[mode % ARRAY_SIZE(name)]);
 464                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 465                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 466                 break;
 467         case TVAUDIO_FM_SAT_STEREO:
 468                 /* Not implemented */
 469                 break;
 470         }
 471         return 0;
 472 }
 473
 474 static int tvaudio_thread(void *data)
 475 {
 476         struct saa7134_dev *dev = data;
 477         int carr_vals[ARRAY_SIZE(mainscan)];
 478         unsigned int i, audio, nscan;
 479         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 480
 481         set_freezable();
 482
 483         for (;;) {
 484                 tvaudio_sleep(dev,-1);
 485                 if (kthread_should_stop())
 486                         goto done;
 487
 488         restart:
 489                 try_to_freeze();
 490
 491                 dev->thread.scan1 = dev->thread.scan2;
 492                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 493                           dev->thread.scan1);
 494                 dev->tvaudio  = NULL;
 495
 496                 saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 497                 saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 498
 499                 if (dev->ctl_automute)
 500                         dev->automute = 1;
 501
 502                 mute_input_7134(dev);
 503
 504                 /* give the tuner some time */
 505                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 506                         goto restart;
 507
 508                 max1 = 0;
 509                 max2 = 0;
 510                 nscan = 0;
 511                 carrier = 0;
 512                 default_carrier = 0;
 513                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 514                         if (!(dev->tvnorm->id & mainscan[i].std))
 515                                 continue;
 516                         if (!default_carrier)
 517                                 default_carrier = mainscan[i].carr;
 518                         nscan++;
 519                 }
 520
 521                 if (1 == nscan) {
 522                         /* only one candidate -- skip scan ;) */
 523                         audio_dbg(1, "only one main carrier candidate - skipping scan\n");
 524                         max1 = 12345;
 525                         carrier = default_carrier;
 526                 } else {
 527                         /* scan for the main carrier */
 528                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 529                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 530                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 531                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 532                                 if (dev->thread.scan1 != dev->thread.scan2)
 533                                         goto restart;
 534                         }
 535                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 536                                 if (max1 < carr_vals[i]) {
 537                                         max2 = max1;
 538                                         max1 = carr_vals[i];
 539                                         carrier = mainscan[i].carr;
 540                                 } else if (max2 < carr_vals[i]) {
 541                                         max2 = carr_vals[i];
 542                                 }
 543                         }
 544                 }
 545
 546                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 547                         /* found good carrier */
 548                         audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 549                                   dev->tvnorm->name, carrier/1000, carrier%1000,
 550                                   max1, max2);
 551                         dev->last_carrier = carrier;
 552                         dev->automute = 0;
 553
 554                 } else if (0 != dev->last_carrier) {
 555                         /* no carrier -- try last detected one as fallback */
 556                         carrier = dev->last_carrier;
 557                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
 558                                   carrier/1000, carrier%1000);
 559                         dev->automute = 1;
 560
 561                 } else {
 562                         /* no carrier + no fallback -- use default */
 563                         carrier = default_carrier;
 564                         audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
 565                                   carrier/1000, carrier%1000);
 566                         dev->automute = 1;
 567                 }
 568                 tvaudio_setcarrier(dev,carrier,carrier);
 569                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 570                 saa7134_tvaudio_setmute(dev);
 571                 /* find the exact tv audio norm */
 572                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 573                         if (dev->tvnorm->id != UNSET &&
 574                                 !(dev->tvnorm->id & tvaudio[i].std))
 575                                 continue;
 576                         if (tvaudio[i].carr1 != carrier)
 577                                 continue;
 578                         /* Note: at least the primary carrier is right here */
 579                         if (UNSET == audio)
 580                                 audio = i;
 581                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 582                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 583                                 goto restart;
 584                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 585                                 audio = i;
 586                                 break;
 587                         }
 588                 }
 589                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 590                 if (UNSET == audio)
 591                         continue;
 592                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 593
 594                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 595                 dev->tvaudio = &tvaudio[audio];
 596
 597                 lastmode = 42;
 598                 for (;;) {
 599
 600                         try_to_freeze();
 601
 602                         if (tvaudio_sleep(dev,5000))
 603                                 goto restart;
 604                         if (kthread_should_stop())
 605                                 break;
 606                         if (UNSET == dev->thread.mode) {
 607                                 rx = tvaudio_getstereo(dev, &tvaudio[audio]);
 608                                 mode = saa7134_tvaudio_rx2mode(rx);
 609                         } else {
 610                                 mode = dev->thread.mode;
 611                         }
 612                         if (lastmode != mode) {
 613                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 614                                 lastmode = mode;
 615                         }
 616                 }
 617         }
 618
 619  done:
 620         dev->thread.stopped = 1;
 621         return 0;
 622 }
 623
 624 /* ------------------------------------------------------------------ */
 625 /* saa7133 / saa7135 code                                             */
 626
 627 static char *stdres[0x20] = {
 628         [0x00] = "no standard detected",
 629         [0x01] = "B/G (in progress)",
 630         [0x02] = "D/K (in progress)",
 631         [0x03] = "M (in progress)",
 632
 633         [0x04] = "B/G A2",
 634         [0x05] = "B/G NICAM",
 635         [0x06] = "D/K A2 (1)",
 636         [0x07] = "D/K A2 (2)",
 637         [0x08] = "D/K A2 (3)",
 638         [0x09] = "D/K NICAM",
 639         [0x0a] = "L NICAM",
 640         [0x0b] = "I NICAM",
 641
 642         [0x0c] = "M Korea",
 643         [0x0d] = "M BTSC ",
 644         [0x0e] = "M EIAJ",
 645
 646         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 647         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 648         [0x11] = "FM radio / IF sel / 50 deemp",
 649         [0x12] = "FM radio / IF sel / 75 deemp",
 650
 651         [0x13 ... 0x1e ] = "unknown",
 652         [0x1f] = "??? [in progress]",
 653 };
 654
 655 #define DSP_RETRY 32
 656 #define DSP_DELAY 16
 657 #define SAA7135_DSP_RWCLEAR_RERR 1
 658
 659 static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 660 {
 661         int state = saa_readb(SAA7135_DSP_RWSTATE);
 662         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 663                 audio_dbg(2, "%s: resetting error bit\n", dev->name);
 664                 saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 665         }
 666         return 0;
 667 }
 668
 669 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 670 {
 671         int state, count = DSP_RETRY;
 672
 673         state = saa_readb(SAA7135_DSP_RWSTATE);
 674         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 675                 pr_warn("%s: dsp access error\n", dev->name);
 676                 saa_dsp_reset_error_bit(dev);
 677                 return -EIO;
 678         }
 679         while (0 == (state & bit)) {
 680                 if (unlikely(0 == count)) {
 681                         pr_err("dsp access wait timeout [bit=%s]\n",
 682                                  (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 683                                  (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 684                                  (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 685                                  "???");
 686                         return -EIO;
 687                 }
 688                 saa_wait(DSP_DELAY);
 689                 state = saa_readb(SAA7135_DSP_RWSTATE);
 690                 count--;
 691         }
 692         return 0;
 693 }
 694
 695
 696 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 697 {
 698         int err;
 699
 700         audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
 701         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 702         if (err < 0)
 703                 return err;
 704         saa_writel(reg,value);
 705         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 706         if (err < 0)
 707                 return err;
 708         return 0;
 709 }
 710
 711 static int getstereo_7133(struct saa7134_dev *dev)
 712 {
 713         int retval = V4L2_TUNER_SUB_MONO;
 714         u32 value;
 715
 716         value = saa_readl(0x528 >> 2);
 717         if (value & 0x20)
 718                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 719         if (value & 0x40)
 720                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 721         return retval;
 722 }
 723
 724 static int mute_input_7133(struct saa7134_dev *dev)
 725 {
 726         u32 reg = 0;
 727         u32 xbarin, xbarout;
 728         int mask;
 729         struct saa7134_input *in;
 730
 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.type && 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, saa7134_input_name[in->type]);
 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;
 777
 778         set_freezable();
 779         for (;;) {
 780                 tvaudio_sleep(dev,-1);
 781                 if (kthread_should_stop())
 782                         goto done;
 783         restart:
 784                 try_to_freeze();
 785
 786                 dev->thread.scan1 = dev->thread.scan2;
 787                 audio_dbg(1, "tvaudio thread scan start [%d]\n",
 788                           dev->thread.scan1);
 789
 790                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 791                         /* insmod option override */
 792                         norms = (audio_ddep << 2) | 0x01;
 793                         audio_dbg(1, "ddep override: %s\n",
 794                                   stdres[audio_ddep]);
 795                 } else if (&card(dev).radio == dev->input) {
 796                         audio_dbg(1, "FM Radio\n");
 797                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 798                                 norms = (0x11 << 2) | 0x01;
 799                                 /* set IF frequency to 5.5 MHz */
 800                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 801                         } else {
 802                                 norms = (0x0f << 2) | 0x01;
 803                         }
 804                 } else {
 805                         /* (let chip) scan for sound carrier */
 806                         norms = 0;
 807                         if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 808                                 norms |= 0x04;
 809                         if (dev->tvnorm->id & V4L2_STD_PAL_I)
 810                                 norms |= 0x20;
 811                         if (dev->tvnorm->id & V4L2_STD_DK)
 812                                 norms |= 0x08;
 813                         if (dev->tvnorm->id & V4L2_STD_MN)
 814                                 norms |= 0x40;
 815                         if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 816                                 norms |= 0x10;
 817                         if (0 == norms)
 818                                 norms = 0x7c; /* all */
 819                         audio_dbg(1, "scanning:%s%s%s%s%s\n",
 820                                   (norms & 0x04) ? " B/G"  : "",
 821                                   (norms & 0x08) ? " D/K"  : "",
 822                                   (norms & 0x10) ? " L/L'" : "",
 823                                   (norms & 0x20) ? " I"    : "",
 824                                   (norms & 0x40) ? " M"    : "");
 825                 }
 826
 827                 /* kick automatic standard detection */
 828                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 829                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 830
 831                 /* setup crossbars */
 832                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 833                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 834
 835                 if (tvaudio_sleep(dev,3000))
 836                         goto restart;
 837                 value = saa_readl(0x528 >> 2) & 0xffffff;
 838
 839                 audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
 840                           value, stdres[value & 0x1f],
 841                           (value & 0x000020) ? ",stereo" : "",
 842                           (value & 0x000040) ? ",dual"   : "");
 843                 audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 844                           (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 845                           (value & 0x000100) ? " A2/EIAJ dual "           : "",
 846                           (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 847                           (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 848
 849                           (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 850                           (value & 0x001000) ? " SAP carrier "            : "",
 851                           (value & 0x002000) ? " BTSC stereo noise mute " : "",
 852                           (value & 0x004000) ? " SAP noise mute "         : "",
 853                           (value & 0x008000) ? " VDSP "                   : "",
 854
 855                           (value & 0x010000) ? " NICST "                  : "",
 856                           (value & 0x020000) ? " NICDU "                  : "",
 857                           (value & 0x040000) ? " NICAM muted "            : "",
 858                           (value & 0x080000) ? " NICAM reserve sound "    : "",
 859
 860                           (value & 0x100000) ? " init done "              : "");
 861         }
 862
 863  done:
 864         dev->thread.stopped = 1;
 865         return 0;
 866 }
 867
 868 /* ------------------------------------------------------------------ */
 869 /* common stuff + external entry points                               */
 870
 871 void saa7134_enable_i2s(struct saa7134_dev *dev)
 872 {
 873         int i2s_format;
 874
 875         if (!card_is_empress(dev))
 876                 return;
 877
 878         if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 879                 return;
 880
 881         /* configure GPIO for out */
 882         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 883
 884         switch (dev->pci->device) {
 885         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 886         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 887             /* Set I2S format (SONY)  */
 888             saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 889             /* Start I2S */
 890             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 891             break;
 892
 893         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 894             i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 895
 896             /* enable I2S audio output for the mpeg encoder */
 897             saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 898             saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 899             saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 900             saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 901
 902         default:
 903             break;
 904         }
 905 }
 906
 907 int saa7134_tvaudio_rx2mode(u32 rx)
 908 {
 909         u32 mode;
 910
 911         mode = V4L2_TUNER_MODE_MONO;
 912         if (rx & V4L2_TUNER_SUB_STEREO)
 913                 mode = V4L2_TUNER_MODE_STEREO;
 914         else if (rx & V4L2_TUNER_SUB_LANG1)
 915                 mode = V4L2_TUNER_MODE_LANG1;
 916         else if (rx & V4L2_TUNER_SUB_LANG2)
 917                 mode = V4L2_TUNER_MODE_LANG2;
 918         return mode;
 919 }
 920
 921 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 922 {
 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 }
 934
 935 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 936                               struct saa7134_input *in)
 937 {
 938         dev->input = in;
 939         switch (dev->pci->device) {
 940         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 941         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 942                 mute_input_7134(dev);
 943                 break;
 944         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 945         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 946                 mute_input_7133(dev);
 947                 break;
 948         }
 949         saa7134_enable_i2s(dev);
 950 }
 951
 952 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 953 {
 954         switch (dev->pci->device) {
 955         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 956                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 957                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 958                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 959                 break;
 960         }
 961 }
 962
 963 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 964 {
 965         int retval = V4L2_TUNER_SUB_MONO;
 966
 967         switch (dev->pci->device) {
 968         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 969                 if (dev->tvaudio)
 970                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 971                 break;
 972         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 973         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 974                 retval = getstereo_7133(dev);
 975                 break;
 976         }
 977         return retval;
 978 }
 979
 980 void saa7134_tvaudio_init(struct saa7134_dev *dev)
 981 {
 982         int clock = saa7134_boards[dev->board].audio_clock;
 983
 984         if (UNSET != audio_clock_override)
 985                 clock = audio_clock_override;
 986
 987         switch (dev->pci->device) {
 988         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 989                 /* init all audio registers */
 990                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 991                 if (need_resched())
 992                         schedule();
 993                 else
 994                         udelay(10);
 995
 996                 saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 997                 saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 998                 saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 999                 /* frame locked audio is mandatory for NICAM */
1000                 saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
1001                 saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
1002                 saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
1003                 break;
1004         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1005         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1006                 saa_writel(0x598 >> 2, clock);
1007                 saa_dsp_writel(dev, 0x474 >> 2, 0x00);
1008                 saa_dsp_writel(dev, 0x450 >> 2, 0x00);
1009         }
1010 }
1011
1012 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1013 {
1014         int (*my_thread)(void *data) = NULL;
1015
1016         switch (dev->pci->device) {
1017         case PCI_DEVICE_ID_PHILIPS_SAA7134:
1018                 my_thread = tvaudio_thread;
1019                 break;
1020         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1021         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1022                 my_thread = tvaudio_thread_ddep;
1023                 break;
1024         }
1025
1026         dev->thread.thread = NULL;
1027         dev->thread.scan1 = dev->thread.scan2 = 0;
1028         if (my_thread) {
1029                 saa7134_tvaudio_init(dev);
1030                 /* start tvaudio thread */
1031                 dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1032                 if (IS_ERR(dev->thread.thread)) {
1033                         pr_warn("%s: kernel_thread() failed\n",
1034                                dev->name);
1035                         /* XXX: missing error handling here */
1036                 }
1037         }
1038
1039         saa7134_enable_i2s(dev);
1040         return 0;
1041 }
1042
1043 int saa7134_tvaudio_close(struct saa7134_dev *dev)
1044 {
1045         dev->automute = 1;
1046         /* anything else to undo? */
1047         return 0;
1048 }
1049
1050 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1051 {
1052         /* shutdown tvaudio thread */
1053         if (dev->thread.thread && !dev->thread.stopped)
1054                 kthread_stop(dev->thread.thread);
1055
1056         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1057         return 0;
1058 }
1059
1060 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1061 {
1062         if (dev->input->amux != TV) {
1063                 audio_dbg(1, "sound IF not in use, skipping scan\n");
1064                 dev->automute = 0;
1065                 saa7134_tvaudio_setmute(dev);
1066         } else if (dev->thread.thread) {
1067                 dev->thread.mode = UNSET;
1068                 dev->thread.scan2++;
1069
1070                 if (!dev->insuspend && !dev->thread.stopped)
1071                         wake_up_process(dev->thread.thread);
1072         } else {
1073                 dev->automute = 0;
1074                 saa7134_tvaudio_setmute(dev);
1075         }
1076         return 0;
1077 }
1078
1079 EXPORT_SYMBOL(saa_dsp_writel);
1080 EXPORT_SYMBOL(saa7134_tvaudio_setmute);