linux/drivers/media/pci/saa7134/saa7134-tvaudio.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   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
  10#include "saa7134.h"
  11#include "saa7134-reg.h"
  12
  13#include <linux/init.h>
  14#include <linux/list.h>
  15#include <linux/module.h>
  16#include <linux/kernel.h>
  17#include <linux/kthread.h>
  18#include <linux/delay.h>
  19#include <linux/freezer.h>
  20#include <asm/div64.h>
  21
  22/* ------------------------------------------------------------------ */
  23
  24static unsigned int audio_debug;
  25module_param(audio_debug, int, 0644);
  26MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  27
  28static unsigned int audio_ddep;
  29module_param(audio_ddep, int, 0644);
  30MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  31
  32static int audio_clock_override = UNSET;
  33module_param(audio_clock_override, int, 0644);
  34
  35static int audio_clock_tweak;
  36module_param(audio_clock_tweak, int, 0644);
  37MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  38
  39#define audio_dbg(level, fmt, arg...) do { \
  40        if (audio_debug >= level) \
  41                printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
  42        } while (0)
  43
  44/* msecs */
  45#define SCAN_INITIAL_DELAY     1000
  46#define SCAN_SAMPLE_DELAY       200
  47#define SCAN_SUBCARRIER_DELAY  2000
  48
  49/* ------------------------------------------------------------------ */
  50/* saa7134 code                                                       */
  51
  52static struct mainscan {
  53        char         *name;
  54        v4l2_std_id  std;
  55        int          carr;
  56} mainscan[] = {
  57        {
  58                .name = "MN",
  59                .std  = V4L2_STD_MN,
  60                .carr = 4500,
  61        },{
  62                .name = "BGH",
  63                .std  = V4L2_STD_B | V4L2_STD_GH,
  64                .carr = 5500,
  65        },{
  66                .name = "I",
  67                .std  = V4L2_STD_PAL_I,
  68                .carr = 6000,
  69        },{
  70                .name = "DKL",
  71                .std  = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
  72                .carr = 6500,
  73        }
  74};
  75
  76static struct saa7134_tvaudio tvaudio[] = {
  77        {
  78                .name          = "PAL-B/G FM-stereo",
  79                .std           = V4L2_STD_PAL_BG,
  80                .mode          = TVAUDIO_FM_BG_STEREO,
  81                .carr1         = 5500,
  82                .carr2         = 5742,
  83        },{
  84                .name          = "PAL-D/K1 FM-stereo",
  85                .std           = V4L2_STD_PAL_DK,
  86                .carr1         = 6500,
  87                .carr2         = 6258,
  88                .mode          = TVAUDIO_FM_BG_STEREO,
  89        },{
  90                .name          = "PAL-D/K2 FM-stereo",
  91                .std           = V4L2_STD_PAL_DK,
  92                .carr1         = 6500,
  93                .carr2         = 6742,
  94                .mode          = TVAUDIO_FM_BG_STEREO,
  95        },{
  96                .name          = "PAL-D/K3 FM-stereo",
  97                .std           = V4L2_STD_PAL_DK,
  98                .carr1         = 6500,
  99                .carr2         = 5742,
 100                .mode          = TVAUDIO_FM_BG_STEREO,
 101        },{
 102                .name          = "PAL-B/G NICAM",
 103                .std           = V4L2_STD_PAL_BG,
 104                .carr1         = 5500,
 105                .carr2         = 5850,
 106                .mode          = TVAUDIO_NICAM_FM,
 107        },{
 108                .name          = "PAL-I NICAM",
 109                .std           = V4L2_STD_PAL_I,
 110                .carr1         = 6000,
 111                .carr2         = 6552,
 112                .mode          = TVAUDIO_NICAM_FM,
 113        },{
 114                .name          = "PAL-D/K NICAM",
 115                .std           = V4L2_STD_PAL_DK,
 116                .carr1         = 6500,
 117                .carr2         = 5850,
 118                .mode          = TVAUDIO_NICAM_FM,
 119        },{
 120                .name          = "SECAM-L NICAM",
 121                .std           = V4L2_STD_SECAM_L,
 122                .carr1         = 6500,
 123                .carr2         = 5850,
 124                .mode          = TVAUDIO_NICAM_AM,
 125        },{
 126                .name          = "SECAM-D/K NICAM",
 127                .std           = V4L2_STD_SECAM_DK,
 128                .carr1         = 6500,
 129                .carr2         = 5850,
 130                .mode          = TVAUDIO_NICAM_FM,
 131        },{
 132                .name          = "NTSC-A2 FM-stereo",
 133                .std           = V4L2_STD_NTSC,
 134                .carr1         = 4500,
 135                .carr2         = 4724,
 136                .mode          = TVAUDIO_FM_K_STEREO,
 137        },{
 138                .name          = "NTSC-M",
 139                .std           = V4L2_STD_NTSC,
 140                .carr1         = 4500,
 141                .carr2         = -1,
 142                .mode          = TVAUDIO_FM_MONO,
 143        }
 144};
 145#define TVAUDIO ARRAY_SIZE(tvaudio)
 146
 147/* ------------------------------------------------------------------ */
 148
 149static u32 tvaudio_carr2reg(u32 carrier)
 150{
 151        u64 a = carrier;
 152
 153        a <<= 24;
 154        do_div(a,12288);
 155        return a;
 156}
 157
 158static void tvaudio_setcarrier(struct saa7134_dev *dev,
 159                               int primary, int secondary)
 160{
 161        if (-1 == secondary)
 162                secondary = primary;
 163        saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 164        saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 165}
 166
 167#define SAA7134_MUTE_MASK 0xbb
 168#define SAA7134_MUTE_ANALOG 0x04
 169#define SAA7134_MUTE_I2S 0x40
 170
 171static void mute_input_7134(struct saa7134_dev *dev)
 172{
 173        unsigned int mute;
 174        struct saa7134_input *in;
 175        int ausel=0, ics=0, ocs=0;
 176        int mask;
 177
 178        /* look what is to do ... */
 179        in   = dev->input;
 180        mute = (dev->ctl_mute ||
 181                (dev->automute  &&  (&card(dev).radio) != in));
 182        if (card(dev).mute.type) {
 183                /*
 184                 * 7130 - we'll mute using some unconnected audio input
 185                 * 7134 - we'll probably should switch external mux with gpio
 186                 */
 187                if (mute)
 188                        in = &card(dev).mute;
 189        }
 190
 191        if (dev->hw_mute  == mute &&
 192                dev->hw_input == in && !dev->insuspend) {
 193                audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
 194                          mute, saa7134_input_name[in->type]);
 195                return;
 196        }
 197
 198        audio_dbg(1, "ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 199                  dev->ctl_mute, dev->automute,
 200                  saa7134_input_name[dev->input->type], mute,
 201                  saa7134_input_name[in->type]);
 202        dev->hw_mute  = mute;
 203        dev->hw_input = in;
 204
 205        if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 206                /* 7134 mute */
 207                saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
 208                                                    SAA7134_MUTE_MASK |
 209                                                    SAA7134_MUTE_ANALOG |
 210                                                    SAA7134_MUTE_I2S :
 211                                                    SAA7134_MUTE_MASK);
 212
 213        /* switch internal audio mux */
 214        switch (in->amux) {
 215        case TV:         ausel=0xc0; ics=0x00; ocs=0x02; break;
 216        case LINE1:      ausel=0x80; ics=0x00; ocs=0x00; break;
 217        case LINE2:      ausel=0x80; ics=0x08; ocs=0x01; break;
 218        case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
 219        }
 220        saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 221        saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 222        saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 223        // for oss, we need to change the clock configuration
 224        if (in->amux == TV)
 225                saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 226        else
 227                saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x01);
 228
 229        /* switch gpio-connected external audio mux */
 230        if (0 == card(dev).gpiomask)
 231                return;
 232
 233        mask = card(dev).gpiomask;
 234        saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 235        saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 236        saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 237}
 238
 239static void tvaudio_setmode(struct saa7134_dev *dev,
 240                            struct saa7134_tvaudio *audio,
 241                            char *note)
 242{
 243        int acpf, tweak = 0;
 244
 245        if (dev->tvnorm->id == V4L2_STD_NTSC) {
 246                acpf = 0x19066;
 247        } else {
 248                acpf = 0x1e000;
 249        }
 250        if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 251                tweak = audio_clock_tweak;
 252
 253        if (note)
 254                audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 255                        note, audio->name,
 256                        audio->carr1 / 1000, audio->carr1 % 1000,
 257                        audio->carr2 / 1000, audio->carr2 % 1000,
 258                        acpf, tweak);
 259
 260        acpf += tweak;
 261        saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 262        saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 263        saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 264        tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 265
 266        switch (audio->mode) {
 267        case TVAUDIO_FM_MONO:
 268        case TVAUDIO_FM_BG_STEREO:
 269                saa_writeb(SAA7134_DEMODULATOR,               0x00);
 270                saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 271                saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 272                saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 273                saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 274                break;
 275        case TVAUDIO_FM_K_STEREO:
 276                saa_writeb(SAA7134_DEMODULATOR,               0x00);
 277                saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 278                saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 279                saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 280                saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 281                break;
 282        case TVAUDIO_NICAM_FM:
 283                saa_writeb(SAA7134_DEMODULATOR,               0x10);
 284                saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 285                saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 286                saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 287                saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 288                break;
 289        case TVAUDIO_NICAM_AM:
 290                saa_writeb(SAA7134_DEMODULATOR,               0x12);
 291                saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 292                saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 293                saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 294                saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 295                break;
 296        case TVAUDIO_FM_SAT_STEREO:
 297                /* not implemented (yet) */
 298                break;
 299        }
 300}
 301
 302static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 303{
 304        if (dev->thread.scan1 == dev->thread.scan2 &&
 305            !kthread_should_stop()) {
 306                if (timeout < 0) {
 307                        set_current_state(TASK_INTERRUPTIBLE);
 308                        schedule();
 309                } else {
 310                        schedule_timeout_interruptible
 311                                                (msecs_to_jiffies(timeout));
 312                }
 313        }
 314        return dev->thread.scan1 != dev->thread.scan2;
 315}
 316
 317static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
 318{
 319        __s32 left,right,value;
 320
 321        if (!(dev->tvnorm->id & scan->std)) {
 322                value = 0;
 323                audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
 324                          scan->carr / 1000, scan->carr % 1000, scan->name);
 325                return 0;
 326        }
 327
 328        if (audio_debug > 1) {
 329                int i;
 330                audio_dbg(1, "debug %d:", scan->carr);
 331                for (i = -150; i <= 150; i += 30) {
 332                        tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
 333                        saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 334                        if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 335                                return -1;
 336                        value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 337                        if (0 == i)
 338                                pr_cont("  #  %6d  # ", value >> 16);
 339                        else
 340                                pr_cont(" %6d", value >> 16);
 341                }
 342                pr_cont("\n");
 343        }
 344
 345        tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
 346        saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 347        if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 348                return -1;
 349        left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 350
 351        tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
 352        saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 353        if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 354                return -1;
 355        right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 356
 357        left >>= 16;
 358        right >>= 16;
 359        value = left > right ? left - right : right - left;
 360        audio_dbg(1, "scanning %d.%03d MHz [%4s] =>  dc is %5d [%d/%d]\n",
 361                  scan->carr / 1000, scan->carr % 1000,
 362                  scan->name, value, left, right);
 363        return value;
 364}
 365
 366
 367static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 368{
 369        __u32 idp, nicam, nicam_status;
 370        int retval = -1;
 371
 372        switch (audio->mode) {
 373        case TVAUDIO_FM_MONO:
 374                return V4L2_TUNER_SUB_MONO;
 375        case TVAUDIO_FM_K_STEREO:
 376        case TVAUDIO_FM_BG_STEREO:
 377                idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 378                audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
 379                if (0x03 == (idp & 0x03))
 380                        retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 381                else if (0x05 == (idp & 0x05))
 382                        retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 383                else if (0x01 == (idp & 0x01))
 384                        retval = V4L2_TUNER_SUB_MONO;
 385                break;
 386        case TVAUDIO_FM_SAT_STEREO:
 387                /* not implemented (yet) */
 388                break;
 389        case TVAUDIO_NICAM_FM:
 390        case TVAUDIO_NICAM_AM:
 391                nicam = saa_readb(SAA7134_AUDIO_STATUS);
 392                audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
 393                if (nicam & 0x1) {
 394                        nicam_status = saa_readb(SAA7134_NICAM_STATUS);
 395                        audio_dbg(1, "getstereo: nicam_status=0x%x\n",
 396                                  nicam_status);
 397
 398                        switch (nicam_status & 0x03) {
 399                            case 0x01:
 400                                retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 401                                break;
 402                            case 0x02:
 403                                retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 404                                break;
 405                            default:
 406                                retval = V4L2_TUNER_SUB_MONO;
 407                        }
 408                } else {
 409                        /* No nicam detected */
 410                }
 411                break;
 412        }
 413        if (retval != -1)
 414                audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
 415                        (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 416                        (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 417                        (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 418                        (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 419        return retval;
 420}
 421
 422static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 423                             u32 mode)
 424{
 425        static char *name[] = {
 426                [ V4L2_TUNER_MODE_MONO   ] = "mono",
 427                [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 428                [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 429                [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 430                [ V4L2_TUNER_MODE_LANG1_LANG2  ] = "lang1+lang2",
 431        };
 432        static u32 fm[] = {
 433                [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 434                [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 435                [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 436                [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 437                [ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80,  /* auto */
 438        };
 439        u32 reg;
 440
 441        switch (audio->mode) {
 442        case TVAUDIO_FM_MONO:
 443                /* nothing to do ... */
 444                break;
 445        case TVAUDIO_FM_K_STEREO:
 446        case TVAUDIO_FM_BG_STEREO:
 447        case TVAUDIO_NICAM_AM:
 448        case TVAUDIO_NICAM_FM:
 449                audio_dbg(1, "setstereo [fm] => %s\n",
 450                          name[mode % ARRAY_SIZE(name)]);
 451                reg = fm[ mode % ARRAY_SIZE(fm) ];
 452                saa_writeb(SAA7134_FM_DEMATRIX, reg);
 453                break;
 454        case TVAUDIO_FM_SAT_STEREO:
 455                /* Not implemented */
 456                break;
 457        }
 458        return 0;
 459}
 460
 461static int tvaudio_thread(void *data)
 462{
 463        struct saa7134_dev *dev = data;
 464        int carr_vals[ARRAY_SIZE(mainscan)];
 465        unsigned int i, audio, nscan;
 466        int max1,max2,carrier,rx,mode,lastmode,default_carrier;
 467
 468        set_freezable();
 469
 470        for (;;) {
 471                tvaudio_sleep(dev,-1);
 472                if (kthread_should_stop())
 473                        goto done;
 474
 475        restart:
 476                try_to_freeze();
 477
 478                dev->thread.scan1 = dev->thread.scan2;
 479                audio_dbg(1, "tvaudio thread scan start [%d]\n",
 480                          dev->thread.scan1);
 481                dev->tvaudio  = NULL;
 482
 483                saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 484                saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 485
 486                if (dev->ctl_automute)
 487                        dev->automute = 1;
 488
 489                mute_input_7134(dev);
 490
 491                /* give the tuner some time */
 492                if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 493                        goto restart;
 494
 495                max1 = 0;
 496                max2 = 0;
 497                nscan = 0;
 498                carrier = 0;
 499                default_carrier = 0;
 500                for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 501                        if (!(dev->tvnorm->id & mainscan[i].std))
 502                                continue;
 503                        if (!default_carrier)
 504                                default_carrier = mainscan[i].carr;
 505                        nscan++;
 506                }
 507
 508                if (1 == nscan) {
 509                        /* only one candidate -- skip scan ;) */
 510                        audio_dbg(1, "only one main carrier candidate - skipping scan\n");
 511                        max1 = 12345;
 512                        carrier = default_carrier;
 513                } else {
 514                        /* scan for the main carrier */
 515                        saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 516                        tvaudio_setmode(dev,&tvaudio[0],NULL);
 517                        for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
 518                                carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
 519                                if (dev->thread.scan1 != dev->thread.scan2)
 520                                        goto restart;
 521                        }
 522                        for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
 523                                if (max1 < carr_vals[i]) {
 524                                        max2 = max1;
 525                                        max1 = carr_vals[i];
 526                                        carrier = mainscan[i].carr;
 527                                } else if (max2 < carr_vals[i]) {
 528                                        max2 = carr_vals[i];
 529                                }
 530                        }
 531                }
 532
 533                if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 534                        /* found good carrier */
 535                        audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 536                                  dev->tvnorm->name, carrier/1000, carrier%1000,
 537                                  max1, max2);
 538                        dev->last_carrier = carrier;
 539                        dev->automute = 0;
 540
 541                } else if (0 != dev->last_carrier) {
 542                        /* no carrier -- try last detected one as fallback */
 543                        carrier = dev->last_carrier;
 544                        audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
 545                                  carrier/1000, carrier%1000);
 546                        dev->automute = 1;
 547
 548                } else {
 549                        /* no carrier + no fallback -- use default */
 550                        carrier = default_carrier;
 551                        audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
 552                                  carrier/1000, carrier%1000);
 553                        dev->automute = 1;
 554                }
 555                tvaudio_setcarrier(dev,carrier,carrier);
 556                saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 557                saa7134_tvaudio_setmute(dev);
 558                /* find the exact tv audio norm */
 559                for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 560                        if (dev->tvnorm->id != UNSET &&
 561                                !(dev->tvnorm->id & tvaudio[i].std))
 562                                continue;
 563                        if (tvaudio[i].carr1 != carrier)
 564                                continue;
 565                        /* Note: at least the primary carrier is right here */
 566                        if (UNSET == audio)
 567                                audio = i;
 568                        tvaudio_setmode(dev,&tvaudio[i],"trying");
 569                        if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 570                                goto restart;
 571                        if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 572                                audio = i;
 573                                break;
 574                        }
 575                }
 576                saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 577                if (UNSET == audio)
 578                        continue;
 579                tvaudio_setmode(dev,&tvaudio[audio],"using");
 580
 581                tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 582                dev->tvaudio = &tvaudio[audio];
 583
 584                lastmode = 42;
 585                for (;;) {
 586
 587                        try_to_freeze();
 588
 589                        if (tvaudio_sleep(dev,5000))
 590                                goto restart;
 591                        if (kthread_should_stop())
 592                                break;
 593                        if (UNSET == dev->thread.mode) {
 594                                rx = tvaudio_getstereo(dev, &tvaudio[audio]);
 595                                mode = saa7134_tvaudio_rx2mode(rx);
 596                        } else {
 597                                mode = dev->thread.mode;
 598                        }
 599                        if (lastmode != mode) {
 600                                tvaudio_setstereo(dev,&tvaudio[audio],mode);
 601                                lastmode = mode;
 602                        }
 603                }
 604        }
 605
 606 done:
 607        dev->thread.stopped = 1;
 608        return 0;
 609}
 610
 611/* ------------------------------------------------------------------ */
 612/* saa7133 / saa7135 code                                             */
 613
 614static char *stdres[0x20] = {
 615        [0x00] = "no standard detected",
 616        [0x01] = "B/G (in progress)",
 617        [0x02] = "D/K (in progress)",
 618        [0x03] = "M (in progress)",
 619
 620        [0x04] = "B/G A2",
 621        [0x05] = "B/G NICAM",
 622        [0x06] = "D/K A2 (1)",
 623        [0x07] = "D/K A2 (2)",
 624        [0x08] = "D/K A2 (3)",
 625        [0x09] = "D/K NICAM",
 626        [0x0a] = "L NICAM",
 627        [0x0b] = "I NICAM",
 628
 629        [0x0c] = "M Korea",
 630        [0x0d] = "M BTSC ",
 631        [0x0e] = "M EIAJ",
 632
 633        [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 634        [0x10] = "FM radio / IF 10.7 / 75 deemp",
 635        [0x11] = "FM radio / IF sel / 50 deemp",
 636        [0x12] = "FM radio / IF sel / 75 deemp",
 637
 638        [0x13 ... 0x1e ] = "unknown",
 639        [0x1f] = "??? [in progress]",
 640};
 641
 642#define DSP_RETRY 32
 643#define DSP_DELAY 16
 644#define SAA7135_DSP_RWCLEAR_RERR 1
 645
 646static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
 647{
 648        int state = saa_readb(SAA7135_DSP_RWSTATE);
 649        if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 650                audio_dbg(2, "%s: resetting error bit\n", dev->name);
 651                saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
 652        }
 653        return 0;
 654}
 655
 656static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 657{
 658        int state, count = DSP_RETRY;
 659
 660        state = saa_readb(SAA7135_DSP_RWSTATE);
 661        if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 662                pr_warn("%s: dsp access error\n", dev->name);
 663                saa_dsp_reset_error_bit(dev);
 664                return -EIO;
 665        }
 666        while (0 == (state & bit)) {
 667                if (unlikely(0 == count)) {
 668                        pr_err("dsp access wait timeout [bit=%s]\n",
 669                                 (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 670                                 (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 671                                 (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 672                                 "???");
 673                        return -EIO;
 674                }
 675                saa_wait(DSP_DELAY);
 676                state = saa_readb(SAA7135_DSP_RWSTATE);
 677                count--;
 678        }
 679        return 0;
 680}
 681
 682
 683int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 684{
 685        int err;
 686
 687        audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
 688        err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 689        if (err < 0)
 690                return err;
 691        saa_writel(reg,value);
 692        err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 693        if (err < 0)
 694                return err;
 695        return 0;
 696}
 697
 698static int getstereo_7133(struct saa7134_dev *dev)
 699{
 700        int retval = V4L2_TUNER_SUB_MONO;
 701        u32 value;
 702
 703        value = saa_readl(0x528 >> 2);
 704        if (value & 0x20)
 705                retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 706        if (value & 0x40)
 707                retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 708        return retval;
 709}
 710
 711static int mute_input_7133(struct saa7134_dev *dev)
 712{
 713        u32 reg = 0;
 714        u32 xbarin, xbarout;
 715        int mask;
 716        struct saa7134_input *in;
 717
 718        xbarin = 0x03;
 719        switch (dev->input->amux) {
 720        case TV:
 721                reg = 0x02;
 722                xbarin = 0;
 723                break;
 724        case LINE1:
 725                reg = 0x00;
 726                break;
 727        case LINE2:
 728        case LINE2_LEFT:
 729                reg = 0x09;
 730                break;
 731        }
 732        saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 733        if (dev->ctl_mute) {
 734                reg = 0x07;
 735                xbarout = 0xbbbbbb;
 736        } else
 737                xbarout = 0xbbbb10;
 738        saa_dsp_writel(dev, 0x46c >> 2, xbarout);
 739
 740        saa_writel(0x594 >> 2, reg);
 741
 742
 743        /* switch gpio-connected external audio mux */
 744        if (0 != card(dev).gpiomask) {
 745                mask = card(dev).gpiomask;
 746
 747                if (card(dev).mute.type && dev->ctl_mute)
 748                        in = &card(dev).mute;
 749                else
 750                        in = dev->input;
 751
 752                saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 753                saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 754                saa7134_track_gpio(dev, saa7134_input_name[in->type]);
 755        }
 756
 757        return 0;
 758}
 759
 760static int tvaudio_thread_ddep(void *data)
 761{
 762        struct saa7134_dev *dev = data;
 763        u32 value, norms;
 764
 765        set_freezable();
 766        for (;;) {
 767                tvaudio_sleep(dev,-1);
 768                if (kthread_should_stop())
 769                        goto done;
 770        restart:
 771                try_to_freeze();
 772
 773                dev->thread.scan1 = dev->thread.scan2;
 774                audio_dbg(1, "tvaudio thread scan start [%d]\n",
 775                          dev->thread.scan1);
 776
 777                if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 778                        /* insmod option override */
 779                        norms = (audio_ddep << 2) | 0x01;
 780                        audio_dbg(1, "ddep override: %s\n",
 781                                  stdres[audio_ddep]);
 782                } else if (&card(dev).radio == dev->input) {
 783                        audio_dbg(1, "FM Radio\n");
 784                        if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
 785                                norms = (0x11 << 2) | 0x01;
 786                                /* set IF frequency to 5.5 MHz */
 787                                saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
 788                        } else {
 789                                norms = (0x0f << 2) | 0x01;
 790                        }
 791                } else {
 792                        /* (let chip) scan for sound carrier */
 793                        norms = 0;
 794                        if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
 795                                norms |= 0x04;
 796                        if (dev->tvnorm->id & V4L2_STD_PAL_I)
 797                                norms |= 0x20;
 798                        if (dev->tvnorm->id & V4L2_STD_DK)
 799                                norms |= 0x08;
 800                        if (dev->tvnorm->id & V4L2_STD_MN)
 801                                norms |= 0x40;
 802                        if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
 803                                norms |= 0x10;
 804                        if (0 == norms)
 805                                norms = 0x7c; /* all */
 806                        audio_dbg(1, "scanning:%s%s%s%s%s\n",
 807                                  (norms & 0x04) ? " B/G"  : "",
 808                                  (norms & 0x08) ? " D/K"  : "",
 809                                  (norms & 0x10) ? " L/L'" : "",
 810                                  (norms & 0x20) ? " I"    : "",
 811                                  (norms & 0x40) ? " M"    : "");
 812                }
 813
 814                /* kick automatic standard detection */
 815                saa_dsp_writel(dev, 0x454 >> 2, 0);
 816                saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 817
 818                /* setup crossbars */
 819                saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 820                saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 821
 822                if (tvaudio_sleep(dev,3000))
 823                        goto restart;
 824                value = saa_readl(0x528 >> 2) & 0xffffff;
 825
 826                audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
 827                          value, stdres[value & 0x1f],
 828                          (value & 0x000020) ? ",stereo" : "",
 829                          (value & 0x000040) ? ",dual"   : "");
 830                audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 831                          (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 832                          (value & 0x000100) ? " A2/EIAJ dual "           : "",
 833                          (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 834                          (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 835
 836                          (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 837                          (value & 0x001000) ? " SAP carrier "            : "",
 838                          (value & 0x002000) ? " BTSC stereo noise mute " : "",
 839                          (value & 0x004000) ? " SAP noise mute "         : "",
 840                          (value & 0x008000) ? " VDSP "                   : "",
 841
 842                          (value & 0x010000) ? " NICST "                  : "",
 843                          (value & 0x020000) ? " NICDU "                  : "",
 844                          (value & 0x040000) ? " NICAM muted "            : "",
 845                          (value & 0x080000) ? " NICAM reserve sound "    : "",
 846
 847                          (value & 0x100000) ? " init done "              : "");
 848        }
 849
 850 done:
 851        dev->thread.stopped = 1;
 852        return 0;
 853}
 854
 855/* ------------------------------------------------------------------ */
 856/* common stuff + external entry points                               */
 857
 858void saa7134_enable_i2s(struct saa7134_dev *dev)
 859{
 860        int i2s_format;
 861
 862        if (!card_is_empress(dev))
 863                return;
 864
 865        if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
 866                return;
 867
 868        /* configure GPIO for out */
 869        saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
 870
 871        switch (dev->pci->device) {
 872        case PCI_DEVICE_ID_PHILIPS_SAA7133:
 873        case PCI_DEVICE_ID_PHILIPS_SAA7135:
 874            /* Set I2S format (SONY)  */
 875            saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
 876            /* Start I2S */
 877            saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
 878            break;
 879
 880        case PCI_DEVICE_ID_PHILIPS_SAA7134:
 881            i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
 882
 883            /* enable I2S audio output for the mpeg encoder */
 884            saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
 885            saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
 886            saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,  0x0F);
 887            saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,  0x01);
 888
 889        default:
 890            break;
 891        }
 892}
 893
 894int saa7134_tvaudio_rx2mode(u32 rx)
 895{
 896        u32 mode;
 897
 898        mode = V4L2_TUNER_MODE_MONO;
 899        if (rx & V4L2_TUNER_SUB_STEREO)
 900                mode = V4L2_TUNER_MODE_STEREO;
 901        else if (rx & V4L2_TUNER_SUB_LANG1)
 902                mode = V4L2_TUNER_MODE_LANG1;
 903        else if (rx & V4L2_TUNER_SUB_LANG2)
 904                mode = V4L2_TUNER_MODE_LANG2;
 905        return mode;
 906}
 907
 908void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 909{
 910        switch (dev->pci->device) {
 911        case PCI_DEVICE_ID_PHILIPS_SAA7130:
 912        case PCI_DEVICE_ID_PHILIPS_SAA7134:
 913                mute_input_7134(dev);
 914                break;
 915        case PCI_DEVICE_ID_PHILIPS_SAA7133:
 916        case PCI_DEVICE_ID_PHILIPS_SAA7135:
 917                mute_input_7133(dev);
 918                break;
 919        }
 920}
 921
 922void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 923                              struct saa7134_input *in)
 924{
 925        dev->input = in;
 926        switch (dev->pci->device) {
 927        case PCI_DEVICE_ID_PHILIPS_SAA7130:
 928        case PCI_DEVICE_ID_PHILIPS_SAA7134:
 929                mute_input_7134(dev);
 930                break;
 931        case PCI_DEVICE_ID_PHILIPS_SAA7133:
 932        case PCI_DEVICE_ID_PHILIPS_SAA7135:
 933                mute_input_7133(dev);
 934                break;
 935        }
 936        saa7134_enable_i2s(dev);
 937}
 938
 939void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 940{
 941        switch (dev->pci->device) {
 942        case PCI_DEVICE_ID_PHILIPS_SAA7134:
 943                saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 944                saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 945                saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 946                break;
 947        }
 948}
 949
 950int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 951{
 952        int retval = V4L2_TUNER_SUB_MONO;
 953
 954        switch (dev->pci->device) {
 955        case PCI_DEVICE_ID_PHILIPS_SAA7134:
 956                if (dev->tvaudio)
 957                        retval = tvaudio_getstereo(dev,dev->tvaudio);
 958                break;
 959        case PCI_DEVICE_ID_PHILIPS_SAA7133:
 960        case PCI_DEVICE_ID_PHILIPS_SAA7135:
 961                retval = getstereo_7133(dev);
 962                break;
 963        }
 964        return retval;
 965}
 966
 967void saa7134_tvaudio_init(struct saa7134_dev *dev)
 968{
 969        int clock = saa7134_boards[dev->board].audio_clock;
 970
 971        if (UNSET != audio_clock_override)
 972                clock = audio_clock_override;
 973
 974        switch (dev->pci->device) {
 975        case PCI_DEVICE_ID_PHILIPS_SAA7134:
 976                /* init all audio registers */
 977                saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 978                if (need_resched())
 979                        schedule();
 980                else
 981                        udelay(10);
 982
 983                saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 984                saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 985                saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 986                /* frame locked audio is mandatory for NICAM */
 987                saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 988                saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 989                saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 990                break;
 991        case PCI_DEVICE_ID_PHILIPS_SAA7133:
 992        case PCI_DEVICE_ID_PHILIPS_SAA7135:
 993                saa_writel(0x598 >> 2, clock);
 994                saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 995                saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 996        }
 997}
 998
 999int saa7134_tvaudio_init2(struct saa7134_dev *dev)
1000{
1001        int (*my_thread)(void *data) = NULL;
1002
1003        switch (dev->pci->device) {
1004        case PCI_DEVICE_ID_PHILIPS_SAA7134:
1005                my_thread = tvaudio_thread;
1006                break;
1007        case PCI_DEVICE_ID_PHILIPS_SAA7133:
1008        case PCI_DEVICE_ID_PHILIPS_SAA7135:
1009                my_thread = tvaudio_thread_ddep;
1010                break;
1011        }
1012
1013        dev->thread.thread = NULL;
1014        dev->thread.scan1 = dev->thread.scan2 = 0;
1015        if (my_thread) {
1016                saa7134_tvaudio_init(dev);
1017                /* start tvaudio thread */
1018                dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
1019                if (IS_ERR(dev->thread.thread)) {
1020                        pr_warn("%s: kernel_thread() failed\n",
1021                               dev->name);
1022                        /* XXX: missing error handling here */
1023                }
1024        }
1025
1026        saa7134_enable_i2s(dev);
1027        return 0;
1028}
1029
1030int saa7134_tvaudio_close(struct saa7134_dev *dev)
1031{
1032        dev->automute = 1;
1033        /* anything else to undo? */
1034        return 0;
1035}
1036
1037int saa7134_tvaudio_fini(struct saa7134_dev *dev)
1038{
1039        /* shutdown tvaudio thread */
1040        if (dev->thread.thread && !dev->thread.stopped)
1041                kthread_stop(dev->thread.thread);
1042
1043        saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
1044        return 0;
1045}
1046
1047int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
1048{
1049        if (dev->input->amux != TV) {
1050                audio_dbg(1, "sound IF not in use, skipping scan\n");
1051                dev->automute = 0;
1052                saa7134_tvaudio_setmute(dev);
1053        } else if (dev->thread.thread) {
1054                dev->thread.mode = UNSET;
1055                dev->thread.scan2++;
1056
1057                if (!dev->insuspend && !dev->thread.stopped)
1058                        wake_up_process(dev->thread.thread);
1059        } else {
1060                dev->automute = 0;
1061                saa7134_tvaudio_setmute(dev);
1062        }
1063        return 0;
1064}
1065
1066EXPORT_SYMBOL(saa_dsp_writel);
1067EXPORT_SYMBOL(saa7134_tvaudio_setmute);
1068