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-L MONO",
 144                 .std           = V4L2_STD_SECAM,
 145                 .carr1         = 6500,
 146                 .carr2         = -1,
 147                 .mode          = TVAUDIO_AM_MONO,
 148         },{
 149                 .name          = "SECAM-D/K",
 150                 .std           = V4L2_STD_SECAM,
 151                 .carr1         = 6500,
 152                 .carr2         = -1,
 153                 .mode          = TVAUDIO_FM_MONO,
 154         },{
 155                 .name          = "NTSC-M",
 156                 .std           = V4L2_STD_NTSC,
 157                 .carr1         = 4500,
 158                 .carr2         = -1,
 159                 .mode          = TVAUDIO_FM_MONO,
 160         },{
 161                 .name          = "NTSC-A2 FM-stereo",
 162                 .std           = V4L2_STD_NTSC,
 163                 .carr1         = 4500,
 164                 .carr2         = 4724,
 165                 .mode          = TVAUDIO_FM_K_STEREO,
 166         }
 167 };
 168 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 169
 170 /* ------------------------------------------------------------------ */
 171
 172 static void tvaudio_init(struct saa7134_dev *dev)
 173 {
 174         int clock = saa7134_boards[dev->board].audio_clock;
 175
 176         if (UNSET != audio_clock_override)
 177                 clock = audio_clock_override;
 178
 179         /* init all audio registers */
 180         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 181         if (need_resched())
 182                 schedule();
 183         else
 184                 udelay(10);
 185
 186         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 187         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 188         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 189         /* frame locked audio is mandatory for NICAM */
 190         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 191
 192         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 193         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 194         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 195         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 196 }
 197
 198 static u32 tvaudio_carr2reg(u32 carrier)
 199 {
 200         u64 a = carrier;
 201
 202         a <<= 24;
 203         do_div(a,12288);
 204         return a;
 205 }
 206
 207 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 208                                int primary, int secondary)
 209 {
 210         if (-1 == secondary)
 211                 secondary = primary;
 212         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 213         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 214 }
 215
 216 #define SAA7134_MUTE_MASK 0xbb
 217 #define SAA7134_MUTE_ANALOG 0x04
 218 #define SAA7134_MUTE_I2S 0x40
 219
 220 static void mute_input_7134(struct saa7134_dev *dev)
 221 {
 222         unsigned int mute;
 223         struct saa7134_input *in;
 224         int ausel=0, ics=0, ocs=0;
 225         int mask;
 226
 227         /* look what is to do ... */
 228         in   = dev->input;
 229         mute = (dev->ctl_mute ||
 230                 (dev->automute  &&  (&card(dev).radio) != in));
 231         if (card(dev).mute.name) {
 232                 /*
 233                  * 7130 - we'll mute using some unconnected audio input
 234                  * 7134 - we'll probably should switch external mux with gpio
 235                  */
 236                 if (mute)
 237                         in = &card(dev).mute;
 238         }
 239
 240         if (dev->hw_mute  == mute &&
 241                 dev->hw_input == in) {
 242                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 243                         mute,in->name);
 244                 return;
 245         }
 246
 247         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 248                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 249         dev->hw_mute  = mute;
 250         dev->hw_input = in;
 251
 252         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 253                 /* 7134 mute */
 254                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 255                                                     SAA7134_MUTE_MASK |
 256                                                     SAA7134_MUTE_ANALOG |
 257                                                     SAA7134_MUTE_I2S :
 258                                                     SAA7134_MUTE_MASK);
 259
 260         /* switch internal audio mux */
 261         switch (in->amux) {
 262         case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 263         case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 264         case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 265         case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 266         }
 267         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 268         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 269         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 270         // for oss, we need to change the clock configuration
 271         if (in->amux == TV)
 272                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 273         else
 274                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 275
 276         /* switch gpio-connected external audio mux */
 277         if (0 == card(dev).gpiomask)
 278                 return;
 279
 280         mask = card(dev).gpiomask;
 281         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 282         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 283         saa7134_track_gpio(dev,in->name);
 284 }
 285
 286 static void tvaudio_setmode(struct saa7134_dev *dev,
 287                             struct saa7134_tvaudio *audio,
 288                             char *note)
 289 {
 290         int acpf, tweak = 0;
 291
 292         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 293                 acpf = 0x19066;
 294         } else {
 295                 acpf = 0x1e000;
 296         }
 297         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 298                 tweak = audio_clock_tweak;
 299
 300         if (note)
 301                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 302                         note,audio->name,
 303                         audio->carr1 / 1000, audio->carr1 % 1000,
 304                         audio->carr2 / 1000, audio->carr2 % 1000,
 305                         acpf, tweak);
 306
 307         acpf += tweak;
 308         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 309         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 310         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 311         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 312
 313         switch (audio->mode) {
 314         case TVAUDIO_FM_MONO:
 315         case TVAUDIO_FM_BG_STEREO:
 316                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 317                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 318                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 319                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 320                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 321                 break;
 322         case TVAUDIO_FM_K_STEREO:
 323                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 324                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 325                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 326                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 327                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 328                 break;
 329         case TVAUDIO_NICAM_FM:
 330                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 331                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 332                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 333                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 334                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 335                 break;
 336         case TVAUDIO_NICAM_AM:
 337                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 338                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 339                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 340                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 341                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 342                 break;
 343         case TVAUDIO_AM_MONO:
 344                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 345                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 346                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 347                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 348                 break;
 349         case TVAUDIO_FM_SAT_STEREO:
 350                 /* not implemented (yet) */
 351                 break;
 352         }
 353 }
 354
 355 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 356 {
 357         DECLARE_WAITQUEUE(wait, current);
 358
 359         add_wait_queue(&dev->thread.wq, &wait);
 360         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 361                 if (timeout < 0) {
 362                         set_current_state(TASK_INTERRUPTIBLE);
 363                         schedule();
 364                 } else {
 365                         schedule_timeout_interruptible
 366                                                 (msecs_to_jiffies(timeout));
 367                 }
 368         }
 369         remove_wait_queue(&dev->thread.wq, &wait);
 370         return dev->thread.scan1 != dev->thread.scan2;
 371 }
 372
 373 static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 374 {
 375         __s32 left,right,value;
 376
 377         if (audio_debug > 1) {
 378                 int i;
 379                 dprintk("debug %d:",scan->carr);
 380                 for (i = -150; i <= 150; i += 30) {
 381                         tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 382                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 383                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 384                                 return -1;
 385                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 386                         if (0 == i)
 387                                 printk("  #  %6d  # ",value >> 16);
 388                         else
 389                                 printk(" %6d",value >> 16);
 390                 }
 391                 printk("\n");
 392         }
 393
 394         if (dev->tvnorm->id & scan->std) {
 395                 tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 396                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 397                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 398                         return -1;
 399                 left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 400
 401                 tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 402                 saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 403                 if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 404                         return -1;
 405                 right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 406
 407                 left >>= 16;
 408                 right >>= 16;
 409                 value = left > right ? left - right : right - left;
 410                 dprintk("scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 411                         scan->carr / 1000, scan->carr % 1000,
 412                         scan->name, value, left, right);
 413         } else {
 414                 value = 0;
 415                 dprintk("skipping %d.%03d MHz [%4s]\n",
 416                         scan->carr / 1000, scan->carr % 1000, scan->name);
 417         }
 418         return value;
 419 }
 420
 421
 422 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 423 {
 424         __u32 idp, nicam, nicam_status;
 425         int retval = -1;
 426
 427         switch (audio->mode) {
 428         case TVAUDIO_FM_MONO:
 429         case TVAUDIO_AM_MONO:
 430                 return V4L2_TUNER_SUB_MONO;
 431         case TVAUDIO_FM_K_STEREO:
 432         case TVAUDIO_FM_BG_STEREO:
 433                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 434                 dprintk("getstereo: fm/stereo: idp=0x%x\n",idp);
 435                 if (0x03 == (idp & 0x03))
 436                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 437                 else if (0x05 == (idp & 0x05))
 438                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 439                 else if (0x01 == (idp & 0x01))
 440                         retval = V4L2_TUNER_SUB_MONO;
 441                 break;
 442         case TVAUDIO_FM_SAT_STEREO:
 443                 /* not implemented (yet) */
 444                 break;
 445         case TVAUDIO_NICAM_FM:
 446         case TVAUDIO_NICAM_AM:
 447                 nicam = saa_readb(SAA7134_AUDIO_STATUS);
 448                 dprintk("getstereo: nicam=0x%x\n",nicam);
 449                 if (nicam & 0x1) {
 450                         nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 451                         dprintk("getstereo: nicam_status=0x%x\n", nicam_status);
 452
 453                         switch (nicam_status & 0x03) {
 454                             case 0x01:
 455                                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 456                                 break;
 457                             case 0x02:
 458                                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 459                                 break;
 460                             default:
 461                                 retval = V4L2_TUNER_SUB_MONO;
 462                         }
 463                 } else {
 464                         /* No nicam detected */
 465                 }
 466                 break;
 467         }
 468         if (retval != -1)
 469                 dprintk("found audio subchannels:%s%s%s%s\n",
 470                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 471                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 472                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 473                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 474         return retval;
 475 }
 476
 477 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 478                              u32 mode)
 479 {
 480         static char *name[] = {
 481                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 482                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 483                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 484                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 485                 [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 486         };
 487         static u32 fm[] = {
 488                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 489                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 490                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 491                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 492                 [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 493         };
 494         u32 reg;
 495
 496         switch (audio->mode) {
 497         case TVAUDIO_FM_MONO:
 498         case TVAUDIO_AM_MONO:
 499                 /* nothing to do ... */
 500                 break;
 501         case TVAUDIO_FM_K_STEREO:
 502         case TVAUDIO_FM_BG_STEREO:
 503         case TVAUDIO_NICAM_AM:
 504         case TVAUDIO_NICAM_FM:
 505                 dprintk("setstereo [fm] => %s\n",
 506                         name[ mode % ARRAY_SIZE(name) ]);
 507                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 508                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 509                 break;
 510         case TVAUDIO_FM_SAT_STEREO:
 511                 /* Not implemented */
 512                 break;
 513         }
 514         return 0;
 515 }
 516
 517 static int tvaudio_thread(void *data)
 518 {
 519         struct saa7134_dev *dev = data;
 520         int carr_vals[ARRAY_SIZE(mainscan)];
 521         unsigned int i, audio, nscan;
 522         int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 523
 524         daemonize("%s", dev->name);
 525         allow_signal(SIGTERM);
 526         for (;;) {
 527                 tvaudio_sleep(dev,-1);
 528                 if (dev->thread.shutdown || signal_pending(current))
 529                         goto done;
 530
 531         restart:
 532                 dev->thread.scan1 = dev->thread.scan2;
 533                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 534                 dev->tvaudio  = NULL;
 535                 tvaudio_init(dev);
 536                 if (dev->ctl_automute)
 537                         dev->automute = 1;
 538                 mute_input_7134(dev);
 539
 540                 /* give the tuner some time */
 541                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 542                         goto restart;
 543
 544                 max1 = 0;
 545                 max2 = 0;
 546                 nscan = 0;
 547                 carrier = 0;
 548                 default_carrier = 0;
 549                 for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 550                         if (!(dev->tvnorm->id & mainscan[i].std))
 551                                 continue;
 552                         if (!default_carrier)
 553                                 default_carrier = mainscan[i].carr;
 554                         nscan++;
 555                 }
 556
 557                 if (1 == nscan) {
 558                         /* only one candidate -- skip scan ;) */
 559                         max1 = 12345;
 560                         carrier = default_carrier;
 561                 } else {
 562                         /* scan for the main carrier */
 563                         saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 564                         tvaudio_setmode(dev,&tvaudio[0],NULL);
 565                         for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 566                                 carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 567                                 if (dev->thread.scan1 != dev->thread.scan2)
 568                                         goto restart;
 569                         }
 570                         for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 571                                 if (max1 < carr_vals[i]) {
 572                                         max2 = max1;
 573                                         max1 = carr_vals[i];
 574                                         carrier = mainscan[i].carr;
 575                                 } else if (max2 < carr_vals[i]) {
 576                                         max2 = carr_vals[i];
 577                                 }
 578                         }
 579                 }
 580
 581                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 582                         /* found good carrier */
 583                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 584                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 585                                 max1, max2);
 586                         dev->last_carrier = carrier;
 587
 588                 } else if (0 != dev->last_carrier) {
 589                         /* no carrier -- try last detected one as fallback */
 590                         carrier = dev->last_carrier;
 591                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 592                                "using %d.%03d MHz [last detected]\n",
 593                                dev->name, carrier/1000, carrier%1000);
 594
 595                 } else {
 596                         /* no carrier + no fallback -- use default */
 597                         carrier = default_carrier;
 598                         dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 599                                "using %d.%03d MHz [default]\n",
 600                                dev->name, carrier/1000, carrier%1000);
 601                 }
 602                 tvaudio_setcarrier(dev,carrier,carrier);
 603                 dev->automute = 0;
 604                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 605                 saa7134_tvaudio_setmute(dev);
 606
 607                 /* find the exact tv audio norm */
 608                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 609                         if (dev->tvnorm->id != UNSET &&
 610                                 !(dev->tvnorm->id & tvaudio[i].std))
 611                                 continue;
 612                         if (tvaudio[i].carr1 != carrier)
 613                                 continue;
 614
 615                         if (UNSET == audio)
 616                                 audio = i;
 617                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 618                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 619                                 goto restart;
 620                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 621                                 audio = i;
 622                                 break;
 623                         }
 624                 }
 625                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 626                 if (UNSET == audio)
 627                         continue;
 628                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 629                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 630                 dev->tvaudio = &tvaudio[audio];
 631
 632                 lastmode = 42;
 633                 for (;;) {
 634                         if (tvaudio_sleep(dev,5000))
 635                                 goto restart;
 636                         if (dev->thread.shutdown || signal_pending(current))
 637                                 break;
 638                         if (UNSET == dev->thread.mode) {
 639                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 640                                 mode = saa7134_tvaudio_rx2mode(rx);
 641                         } else {
 642                                 mode = dev->thread.mode;
 643                         }
 644                         if (lastmode != mode) {
 645                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 646                                 lastmode = mode;
 647                         }
 648                 }
 649         }
 650
 651  done:
 652         complete_and_exit(&dev->thread.exit, 0);
 653         return 0;
 654 }
 655
 656 /* ------------------------------------------------------------------ */
 657 /* saa7133 / saa7135 code                                             */
 658
 659 static char *stdres[0x20] = {
 660         [0x00] = "no standard detected",
 661         [0x01] = "B/G (in progress)",
 662         [0x02] = "D/K (in progress)",
 663         [0x03] = "M (in progress)",
 664
 665         [0x04] = "B/G A2",
 666         [0x05] = "B/G NICAM",
 667         [0x06] = "D/K A2 (1)",
 668         [0x07] = "D/K A2 (2)",
 669         [0x08] = "D/K A2 (3)",
 670         [0x09] = "D/K NICAM",
 671         [0x0a] = "L NICAM",
 672         [0x0b] = "I NICAM",
 673
 674         [0x0c] = "M Korea",
 675         [0x0d] = "M BTSC ",
 676         [0x0e] = "M EIAJ",
 677
 678         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 679         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 680         [0x11] = "FM radio / IF sel / 50 deemp",
 681         [0x12] = "FM radio / IF sel / 75 deemp",
 682
 683         [0x13 ... 0x1e ] = "unknown",
 684         [0x1f] = "??? [in progress]",
 685 };
 686
 687 #define DSP_RETRY 32
 688 #define DSP_DELAY 16
 689
 690 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 691 {
 692         int state, count = DSP_RETRY;
 693
 694         state = saa_readb(SAA7135_DSP_RWSTATE);
 695         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 696                 printk("%s: dsp access error\n",dev->name);
 697                 /* FIXME: send ack ... */
 698                 return -EIO;
 699         }
 700         while (0 == (state & bit)) {
 701                 if (unlikely(0 == count)) {
 702                         printk("%s: dsp access wait timeout [bit=%s]\n",
 703                                dev->name,
 704                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 705                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 706                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 707                                "???");
 708                         return -EIO;
 709                 }
 710                 saa_wait(DSP_DELAY);
 711                 state = saa_readb(SAA7135_DSP_RWSTATE);
 712                 count--;
 713         }
 714         return 0;
 715 }
 716
 717
 718 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 719 {
 720         int err;
 721
 722         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 723         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 724         if (err < 0)
 725                 return err;
 726         saa_writel(reg,value);
 727         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 728         if (err < 0)
 729                 return err;
 730         return 0;
 731 }
 732
 733 static int getstereo_7133(struct saa7134_dev *dev)
 734 {
 735         int retval = V4L2_TUNER_SUB_MONO;
 736         u32 value;
 737
 738         value = saa_readl(0x528 >> 2);
 739         if (value & 0x20)
 740                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 741         if (value & 0x40)
 742                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 743         return retval;
 744 }
 745
 746 static int mute_input_7133(struct saa7134_dev *dev)
 747 {
 748         u32 reg = 0;
 749         u32 xbarin, xbarout;
 750         int mask;
 751         struct saa7134_input *in;
 752
 753         /* Hac 0506 route OSS sound simultanously  */
 754         xbarin = 0x03;
 755         switch (dev->input->amux) {
 756         case TV:
 757                 reg = 0x02;
 758                 xbarin = 0;
 759                 break;
 760         case LINE1:
 761                 reg = 0x00;
 762                 break;
 763         case LINE2:
 764         case LINE2_LEFT:
 765                 reg = 0x09;
 766                 break;
 767         }
 768         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 769         if (dev->ctl_mute) {
 770                 reg = 0x07;
 771                 xbarout = 0xbbbbbb;
 772         } else
 773                 xbarout = 0xbbbb10;
 774         saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 775
 776         saa_writel(0x594 >> 2, reg);
 777
 778
 779         /* switch gpio-connected external audio mux */
 780         if (0 != card(dev).gpiomask) {
 781                 mask = card(dev).gpiomask;
 782
 783                 if (card(dev).mute.name && dev->ctl_mute)
 784                         in = &card(dev).mute;
 785                 else
 786                         in = dev->input;
 787
 788                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 789                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 790                 saa7134_track_gpio(dev,in->name);
 791         }
 792
 793         return 0;
 794 }
 795
 796 static int tvaudio_thread_ddep(void *data)
 797 {
 798         struct saa7134_dev *dev = data;
 799         u32 value, norms, clock;
 800
 801         daemonize("%s", dev->name);
 802         allow_signal(SIGTERM);
 803
 804         clock = saa7134_boards[dev->board].audio_clock;
 805         if (UNSET != audio_clock_override)
 806                 clock = audio_clock_override;
 807         saa_writel(0x598 >> 2, clock);
 808
 809         /* unmute */
 810         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 811         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 812
 813         for (;;) {
 814                 tvaudio_sleep(dev,-1);
 815                 if (dev->thread.shutdown || signal_pending(current))
 816                         goto done;
 817
 818         restart:
 819                 dev->thread.scan1 = dev->thread.scan2;
 820                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 821
 822                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 823                         /* insmod option override */
 824                         norms = (audio_ddep << 2) | 0x01;
 825                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 826                 } else if (&card(dev).radio == dev->input) {
 827                         dprintk("FM Radio\n");
 828                         if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 829                                 norms = (0x11 << 2) | 0x01;
 830                                 saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 831                         } else {
 832                                 norms = (0x0f << 2) | 0x01;
 833                         }
 834                 } else {
 835                         /* (let chip) scan for sound carrier */
 836                         norms = 0;
 837                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 838                                 dprintk("PAL scan\n");
 839                                 norms |= 0x2c; /* B/G + D/K + I */
 840                         }
 841                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 842                                 dprintk("NTSC scan\n");
 843                                 norms |= 0x40; /* M */
 844                         }
 845                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 846                                 dprintk("SECAM scan\n");
 847                                 norms |= 0x18; /* L + D/K */
 848                         }
 849                         if (0 == norms)
 850                                 norms = 0x7c; /* all */
 851                         dprintk("scanning:%s%s%s%s%s\n",
 852                                 (norms & 0x04) ? " B/G"  : "",
 853                                 (norms & 0x08) ? " D/K"  : "",
 854                                 (norms & 0x10) ? " L/L'" : "",
 855                                 (norms & 0x20) ? " I"    : "",
 856                                 (norms & 0x40) ? " M"    : "");
 857                 }
 858
 859                 /* kick automatic standard detection */
 860                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 861                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 862
 863                 /* setup crossbars */
 864                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 865                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 866
 867                 if (tvaudio_sleep(dev,3000))
 868                         goto restart;
 869                 value = saa_readl(0x528 >> 2) & 0xffffff;
 870
 871                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 872                         value, stdres[value & 0x1f],
 873                         (value & 0x000020) ? ",stereo" : "",
 874                         (value & 0x000040) ? ",dual"   : "");
 875                 dprintk("detailed status: "
 876                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 877                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 878                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 879                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 880                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 881
 882                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 883                         (value & 0x001000) ? " SAP carrier "            : "",
 884                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 885                         (value & 0x004000) ? " SAP noise mute "         : "",
 886                         (value & 0x008000) ? " VDSP "                   : "",
 887
 888                         (value & 0x010000) ? " NICST "                  : "",
 889                         (value & 0x020000) ? " NICDU "                  : "",
 890                         (value & 0x040000) ? " NICAM muted "            : "",
 891                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 892
 893                         (value & 0x100000) ? " init done "              : "");
 894         }
 895
 896  done:
 897         complete_and_exit(&dev->thread.exit, 0);
 898         return 0;
 899 }
 900
 901 /* ------------------------------------------------------------------ */
 902 /* common stuff + external entry points                               */
 903
 904 static void saa7134_enable_i2s(struct saa7134_dev *dev)
 905 {
 906         int i2s_format;
 907
 908         if (!card_is_empress(dev))
 909                 return;
 910         i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 911
 912         /* enable I2S audio output for the mpeg encoder */
 913         saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 914         saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2s_format);
 915         saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 916         saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 917 }
 918
 919 int saa7134_tvaudio_rx2mode(u32 rx)
 920 {
 921         u32 mode;
 922
 923         mode = V4L2_TUNER_MODE_MONO;
 924         if (rx & V4L2_TUNER_SUB_STEREO)
 925                 mode = V4L2_TUNER_MODE_STEREO;
 926         else if (rx & V4L2_TUNER_SUB_LANG1)
 927                 mode = V4L2_TUNER_MODE_LANG1;
 928         else if (rx & V4L2_TUNER_SUB_LANG2)
 929                 mode = V4L2_TUNER_MODE_LANG2;
 930         return mode;
 931 }
 932
 933 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 934 {
 935         switch (dev->pci->device) {
 936         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 937         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 938                 mute_input_7134(dev);
 939                 break;
 940         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 941         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 942                 mute_input_7133(dev);
 943                 break;
 944         }
 945 }
 946
 947 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 948                               struct saa7134_input *in)
 949 {
 950         dev->input = in;
 951         switch (dev->pci->device) {
 952         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 953         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 954                 mute_input_7134(dev);
 955                 break;
 956         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 957         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 958                 mute_input_7133(dev);
 959                 break;
 960         }
 961         saa7134_enable_i2s(dev);
 962 }
 963
 964 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 965 {
 966         switch (dev->pci->device) {
 967         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 968                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 969                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 970                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 971                 break;
 972         }
 973 }
 974
 975 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 976 {
 977         int retval = V4L2_TUNER_SUB_MONO;
 978
 979         switch (dev->pci->device) {
 980         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 981                 if (dev->tvaudio)
 982                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 983                 break;
 984         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 985         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 986                 retval = getstereo_7133(dev);
 987                 break;
 988         }
 989         return retval;
 990 }
 991
 992 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 993 {
 994         DECLARE_MUTEX_LOCKED(sem);
 995         int (*my_thread)(void *data) = NULL;
 996
 997         switch (dev->pci->device) {
 998         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 999                 my_thread = tvaudio_thread;
1000                 break;
1001         case PCI_DEVICE_ID_PHILIPS_SAA7133:
1002         case PCI_DEVICE_ID_PHILIPS_SAA7135:
1003                 my_thread = tvaudio_thread_ddep;
1004                 break;
1005         }
1006
1007         dev->thread.pid = -1;
1008         if (my_thread) {
1009                 /* start tvaudio thread */
1010                 init_waitqueue_head(&dev->thread.wq);
1011                 init_completion(&dev->thread.exit);
1012                 dev->thread.pid = kernel_thread(my_thread,dev,0);
1013                 if (dev->thread.pid < 0)
1014                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
1015                                dev->name);
1016                 saa7134_tvaudio_do_scan(dev);
1017         }
1018
1019         saa7134_enable_i2s(dev);
1020         return 0;
1021 }
1022
1023 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1024 {
1025         /* shutdown tvaudio thread */
1026         if (dev->thread.pid >= 0) {
1027                 dev->thread.shutdown = 1;
1028                 wake_up_interruptible(&dev->thread.wq);
1029                 wait_for_completion(&dev->thread.exit);
1030         }
1031         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1032         return 0;
1033 }
1034
1035 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1036 {
1037         if (dev->thread.pid >= 0) {
1038                 dev->thread.mode = UNSET;
1039                 dev->thread.scan2++;
1040                 wake_up_interruptible(&dev->thread.wq);
1041         } else {
1042                 dev->automute = 0;
1043                 saa7134_tvaudio_setmute(dev);
1044         }
1045         return 0;
1046 }
1047
1048 EXPORT_SYMBOL(saa_dsp_writel);
1049
1050 /* ----------------------------------------------------------- */
1051 /*
1052  * Local variables:
1053  * c-basic-offset: 8
1054  * End:
1055  */
1056