drivers/media/video/cx88/cx88-tvaudio.c

   1 /*
   2     $Id: cx88-tvaudio.c,v 1.34 2005/03/07 16:10:51 kraxel Exp $
   3
   4     cx88x-audio.c - Conexant CX23880/23881 audio downstream driver driver
   5
   6      (c) 2001 Michael Eskin, Tom Zakrajsek [Windows version]
   7      (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
   8      (c) 2003 Gerd Knorr <kraxel@bytesex.org>
   9
  10     -----------------------------------------------------------------------
  11
  12     Lot of voodoo here.  Even the data sheet doesn't help to
  13     understand what is going on here, the documentation for the audio
  14     part of the cx2388x chip is *very* bad.
  15
  16     Some of this comes from party done linux driver sources I got from
  17     [undocumented].
  18
  19     Some comes from the dscaler sources, one of the dscaler driver guy works
  20     for Conexant ...
  21
  22     -----------------------------------------------------------------------
  23
  24     This program is free software; you can redistribute it and/or modify
  25     it under the terms of the GNU General Public License as published by
  26     the Free Software Foundation; either version 2 of the License, or
  27     (at your option) any later version.
  28
  29     This program is distributed in the hope that it will be useful,
  30     but WITHOUT ANY WARRANTY; without even the implied warranty of
  31     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  32     GNU General Public License for more details.
  33
  34     You should have received a copy of the GNU General Public License
  35     along with this program; if not, write to the Free Software
  36     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  37 */
  38
  39 #include <linux/module.h>
  40 #include <linux/moduleparam.h>
  41 #include <linux/errno.h>
  42 #include <linux/kernel.h>
  43 #include <linux/slab.h>
  44 #include <linux/mm.h>
  45 #include <linux/poll.h>
  46 #include <linux/pci.h>
  47 #include <linux/signal.h>
  48 #include <linux/ioport.h>
  49 #include <linux/sched.h>
  50 #include <linux/types.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/vmalloc.h>
  53 #include <linux/init.h>
  54 #include <linux/smp_lock.h>
  55 #include <linux/delay.h>
  56 #include <linux/kthread.h>
  57
  58 #include "cx88.h"
  59
  60 static unsigned int audio_debug = 0;
  61 module_param(audio_debug,int,0644);
  62 MODULE_PARM_DESC(audio_debug,"enable debug messages [audio]");
  63
  64 #define dprintk(fmt, arg...)    if (audio_debug) \
  65         printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
  66
  67 /* ----------------------------------------------------------- */
  68
  69 static char *aud_ctl_names[64] =
  70 {
  71         [ EN_BTSC_FORCE_MONO       ] = "BTSC_FORCE_MONO",
  72         [ EN_BTSC_FORCE_STEREO     ] = "BTSC_FORCE_STEREO",
  73         [ EN_BTSC_FORCE_SAP        ] = "BTSC_FORCE_SAP",
  74         [ EN_BTSC_AUTO_STEREO      ] = "BTSC_AUTO_STEREO",
  75         [ EN_BTSC_AUTO_SAP         ] = "BTSC_AUTO_SAP",
  76         [ EN_A2_FORCE_MONO1        ] = "A2_FORCE_MONO1",
  77         [ EN_A2_FORCE_MONO2        ] = "A2_FORCE_MONO2",
  78         [ EN_A2_FORCE_STEREO       ] = "A2_FORCE_STEREO",
  79         [ EN_A2_AUTO_MONO2         ] = "A2_AUTO_MONO2",
  80         [ EN_A2_AUTO_STEREO        ] = "A2_AUTO_STEREO",
  81         [ EN_EIAJ_FORCE_MONO1      ] = "EIAJ_FORCE_MONO1",
  82         [ EN_EIAJ_FORCE_MONO2      ] = "EIAJ_FORCE_MONO2",
  83         [ EN_EIAJ_FORCE_STEREO     ] = "EIAJ_FORCE_STEREO",
  84         [ EN_EIAJ_AUTO_MONO2       ] = "EIAJ_AUTO_MONO2",
  85         [ EN_EIAJ_AUTO_STEREO      ] = "EIAJ_AUTO_STEREO",
  86         [ EN_NICAM_FORCE_MONO1     ] = "NICAM_FORCE_MONO1",
  87         [ EN_NICAM_FORCE_MONO2     ] = "NICAM_FORCE_MONO2",
  88         [ EN_NICAM_FORCE_STEREO    ] = "NICAM_FORCE_STEREO",
  89         [ EN_NICAM_AUTO_MONO2      ] = "NICAM_AUTO_MONO2",
  90         [ EN_NICAM_AUTO_STEREO     ] = "NICAM_AUTO_STEREO",
  91         [ EN_FMRADIO_FORCE_MONO    ] = "FMRADIO_FORCE_MONO",
  92         [ EN_FMRADIO_FORCE_STEREO  ] = "FMRADIO_FORCE_STEREO",
  93         [ EN_FMRADIO_AUTO_STEREO   ] = "FMRADIO_AUTO_STEREO",
  94 };
  95
  96 struct rlist {
  97         u32 reg;
  98         u32 val;
  99 };
 100
 101 static void set_audio_registers(struct cx88_core *core,
 102                                 const struct rlist *l)
 103 {
 104         int i;
 105
 106         for (i = 0; l[i].reg; i++) {
 107                 switch (l[i].reg) {
 108                 case AUD_PDF_DDS_CNST_BYTE2:
 109                 case AUD_PDF_DDS_CNST_BYTE1:
 110                 case AUD_PDF_DDS_CNST_BYTE0:
 111                 case AUD_QAM_MODE:
 112                 case AUD_PHACC_FREQ_8MSB:
 113                 case AUD_PHACC_FREQ_8LSB:
 114                         cx_writeb(l[i].reg, l[i].val);
 115                         break;
 116                 default:
 117                         cx_write(l[i].reg, l[i].val);
 118                         break;
 119                 }
 120         }
 121 }
 122
 123 static void set_audio_start(struct cx88_core *core,
 124                             u32 mode, u32 ctl)
 125 {
 126         // mute
 127         cx_write(AUD_VOL_CTL,       (1 << 6));
 128
 129         //  increase level of input by 12dB
 130         cx_write(AUD_AFE_12DB_EN,   0x0001);
 131
 132         // start programming
 133         cx_write(AUD_CTL,           0x0000);
 134         cx_write(AUD_INIT,          mode);
 135         cx_write(AUD_INIT_LD,       0x0001);
 136         cx_write(AUD_SOFT_RESET,    0x0001);
 137
 138         cx_write(AUD_CTL,           ctl);
 139 }
 140
 141 static void set_audio_finish(struct cx88_core *core)
 142 {
 143         u32 volume;
 144
 145         if (cx88_boards[core->board].blackbird) {
 146                 // 'pass-thru mode': this enables the i2s output to the mpeg encoder
 147                 cx_set(AUD_CTL, 0x2000);
 148                 cx_write(AUD_I2SOUTPUTCNTL, 1);
 149                 //cx_write(AUD_APB_IN_RATE_ADJ, 0);
 150         }
 151
 152         // finish programming
 153         cx_write(AUD_SOFT_RESET, 0x0000);
 154
 155         // start audio processing
 156         cx_set(AUD_CTL, EN_DAC_ENABLE);
 157
 158         // unmute
 159         volume = cx_sread(SHADOW_AUD_VOL_CTL);
 160         cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
 161 }
 162
 163 /* ----------------------------------------------------------- */
 164
 165 static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap)
 166 {
 167         static const struct rlist btsc[] = {
 168                 /* from dscaler */
 169                 { AUD_OUT1_SEL,                0x00000013 },
 170                 { AUD_OUT1_SHIFT,              0x00000000 },
 171                 { AUD_POLY0_DDS_CONSTANT,      0x0012010c },
 172                 { AUD_DMD_RA_DDS,              0x00c3e7aa },
 173                 { AUD_DBX_IN_GAIN,             0x00004734 },
 174                 { AUD_DBX_WBE_GAIN,            0x00004640 },
 175                 { AUD_DBX_SE_GAIN,             0x00008d31 },
 176                 { AUD_DCOC_0_SRC,              0x0000001a },
 177                 { AUD_IIR1_4_SEL,              0x00000021 },
 178                 { AUD_DCOC_PASS_IN,            0x00000003 },
 179                 { AUD_DCOC_0_SHIFT_IN0,        0x0000000a },
 180                 { AUD_DCOC_0_SHIFT_IN1,        0x00000008 },
 181                 { AUD_DCOC_1_SHIFT_IN0,        0x0000000a },
 182                 { AUD_DCOC_1_SHIFT_IN1,        0x00000008 },
 183                 { AUD_DN0_FREQ,                0x0000283b },
 184                 { AUD_DN2_SRC_SEL,             0x00000008 },
 185                 { AUD_DN2_FREQ,                0x00003000 },
 186                 { AUD_DN2_AFC,                 0x00000002 },
 187                 { AUD_DN2_SHFT,                0x00000000 },
 188                 { AUD_IIR2_2_SEL,              0x00000020 },
 189                 { AUD_IIR2_2_SHIFT,            0x00000000 },
 190                 { AUD_IIR2_3_SEL,              0x0000001f },
 191                 { AUD_IIR2_3_SHIFT,            0x00000000 },
 192                 { AUD_CRDC1_SRC_SEL,           0x000003ce },
 193                 { AUD_CRDC1_SHIFT,             0x00000000 },
 194                 { AUD_CORDIC_SHIFT_1,          0x00000007 },
 195                 { AUD_DCOC_1_SRC,              0x0000001b },
 196                 { AUD_DCOC1_SHIFT,             0x00000000 },
 197                 { AUD_RDSI_SEL,                0x00000008 },
 198                 { AUD_RDSQ_SEL,                0x00000008 },
 199                 { AUD_RDSI_SHIFT,              0x00000000 },
 200                 { AUD_RDSQ_SHIFT,              0x00000000 },
 201                 { AUD_POLYPH80SCALEFAC,        0x00000003 },
 202                 { /* end of list */ },
 203         };
 204         static const struct rlist btsc_sap[] = {
 205                 { AUD_DBX_IN_GAIN,             0x00007200 },
 206                 { AUD_DBX_WBE_GAIN,            0x00006200 },
 207                 { AUD_DBX_SE_GAIN,             0x00006200 },
 208                 { AUD_IIR1_1_SEL,              0x00000000 },
 209                 { AUD_IIR1_3_SEL,              0x00000001 },
 210                 { AUD_DN1_SRC_SEL,             0x00000007 },
 211                 { AUD_IIR1_4_SHIFT,            0x00000006 },
 212                 { AUD_IIR2_1_SHIFT,            0x00000000 },
 213                 { AUD_IIR2_2_SHIFT,            0x00000000 },
 214                 { AUD_IIR3_0_SHIFT,            0x00000000 },
 215                 { AUD_IIR3_1_SHIFT,            0x00000000 },
 216                 { AUD_IIR3_0_SEL,              0x0000000d },
 217                 { AUD_IIR3_1_SEL,              0x0000000e },
 218                 { AUD_DEEMPH1_SRC_SEL,         0x00000014 },
 219                 { AUD_DEEMPH1_SHIFT,           0x00000000 },
 220                 { AUD_DEEMPH1_G0,              0x00004000 },
 221                 { AUD_DEEMPH1_A0,              0x00000000 },
 222                 { AUD_DEEMPH1_B0,              0x00000000 },
 223                 { AUD_DEEMPH1_A1,              0x00000000 },
 224                 { AUD_DEEMPH1_B1,              0x00000000 },
 225                 { AUD_OUT0_SEL,                0x0000003f },
 226                 { AUD_OUT1_SEL,                0x0000003f },
 227                 { AUD_DN1_AFC,                 0x00000002 },
 228                 { AUD_DCOC_0_SHIFT_IN0,        0x0000000a },
 229                 { AUD_DCOC_0_SHIFT_IN1,        0x00000008 },
 230                 { AUD_DCOC_1_SHIFT_IN0,        0x0000000a },
 231                 { AUD_DCOC_1_SHIFT_IN1,        0x00000008 },
 232                 { AUD_IIR1_0_SEL,              0x0000001d },
 233                 { AUD_IIR1_2_SEL,              0x0000001e },
 234                 { AUD_IIR2_1_SEL,              0x00000002 },
 235                 { AUD_IIR2_2_SEL,              0x00000004 },
 236                 { AUD_IIR3_2_SEL,              0x0000000f },
 237                 { AUD_DCOC2_SHIFT,             0x00000001 },
 238                 { AUD_IIR3_2_SHIFT,            0x00000001 },
 239                 { AUD_DEEMPH0_SRC_SEL,         0x00000014 },
 240                 { AUD_CORDIC_SHIFT_1,          0x00000006 },
 241                 { AUD_POLY0_DDS_CONSTANT,      0x000e4db2 },
 242                 { AUD_DMD_RA_DDS,              0x00f696e6 },
 243                 { AUD_IIR2_3_SEL,              0x00000025 },
 244                 { AUD_IIR1_4_SEL,              0x00000021 },
 245                 { AUD_DN1_FREQ,                0x0000c965 },
 246                 { AUD_DCOC_PASS_IN,            0x00000003 },
 247                 { AUD_DCOC_0_SRC,              0x0000001a },
 248                 { AUD_DCOC_1_SRC,              0x0000001b },
 249                 { AUD_DCOC1_SHIFT,             0x00000000 },
 250                 { AUD_RDSI_SEL,                0x00000009 },
 251                 { AUD_RDSQ_SEL,                0x00000009 },
 252                 { AUD_RDSI_SHIFT,              0x00000000 },
 253                 { AUD_RDSQ_SHIFT,              0x00000000 },
 254                 { AUD_POLYPH80SCALEFAC,        0x00000003 },
 255                 { /* end of list */ },
 256         };
 257
 258         // dscaler: exactly taken from driver,
 259         // dscaler: don't know why to set EN_FMRADIO_EN_RDS
 260         if (sap) {
 261                 dprintk("%s SAP (status: unknown)\n",__FUNCTION__);
 262                 set_audio_start(core, 0x0001,
 263                                 EN_FMRADIO_EN_RDS | EN_BTSC_FORCE_SAP);
 264                 set_audio_registers(core, btsc_sap);
 265         } else {
 266                 dprintk("%s (status: known-good)\n",__FUNCTION__);
 267                 set_audio_start(core, 0x0001,
 268                                 EN_FMRADIO_EN_RDS | EN_BTSC_AUTO_STEREO);
 269                 set_audio_registers(core, btsc);
 270         }
 271         set_audio_finish(core);
 272 }
 273
 274 #if 0
 275 static void set_audio_standard_NICAM(struct cx88_core *core)
 276 {
 277         static const struct rlist nicam_common[] = {
 278                 /* from dscaler */
 279                 { AUD_RATE_ADJ1,           0x00000010 },
 280                 { AUD_RATE_ADJ2,           0x00000040 },
 281                 { AUD_RATE_ADJ3,           0x00000100 },
 282                 { AUD_RATE_ADJ4,           0x00000400 },
 283                 { AUD_RATE_ADJ5,           0x00001000 },
 284     //          { AUD_DMD_RA_DDS,          0x00c0d5ce },
 285
 286                 // Deemphasis 1:
 287                 { AUD_DEEMPHGAIN_R,        0x000023c2 },
 288                 { AUD_DEEMPHNUMER1_R,      0x0002a7bc },
 289                 { AUD_DEEMPHNUMER2_R,      0x0003023e },
 290                 { AUD_DEEMPHDENOM1_R,      0x0000f3d0 },
 291                 { AUD_DEEMPHDENOM2_R,      0x00000000 },
 292
 293 #if 0
 294                 // Deemphasis 2: (other tv norm?)
 295                 { AUD_DEEMPHGAIN_R,        0x0000c600 },
 296                 { AUD_DEEMPHNUMER1_R,      0x00066738 },
 297                 { AUD_DEEMPHNUMER2_R,      0x00066739 },
 298                 { AUD_DEEMPHDENOM1_R,      0x0001e88c },
 299                 { AUD_DEEMPHDENOM2_R,      0x0001e88c },
 300 #endif
 301
 302                 { AUD_DEEMPHDENOM2_R,      0x00000000 },
 303                 { AUD_ERRLOGPERIOD_R,      0x00000fff },
 304                 { AUD_ERRINTRPTTHSHLD1_R,  0x000003ff },
 305                 { AUD_ERRINTRPTTHSHLD2_R,  0x000000ff },
 306                 { AUD_ERRINTRPTTHSHLD3_R,  0x0000003f },
 307                 { AUD_POLYPH80SCALEFAC,    0x00000003 },
 308
 309                 // setup QAM registers
 310                 { AUD_PDF_DDS_CNST_BYTE2,  0x06 },
 311                 { AUD_PDF_DDS_CNST_BYTE1,  0x82 },
 312                 { AUD_PDF_DDS_CNST_BYTE0,  0x16 },
 313                 { AUD_QAM_MODE,            0x05 },
 314
 315                 { /* end of list */ },
 316         };
 317         static const struct rlist nicam_pal_i[] = {
 318                 { AUD_PDF_DDS_CNST_BYTE0,  0x12 },
 319                 { AUD_PHACC_FREQ_8MSB,     0x3a },
 320                 { AUD_PHACC_FREQ_8LSB,     0x93 },
 321
 322                 { /* end of list */ },
 323         };
 324         static const struct rlist nicam_default[] = {
 325                 { AUD_PDF_DDS_CNST_BYTE0,  0x16 },
 326                 { AUD_PHACC_FREQ_8MSB,     0x34 },
 327                 { AUD_PHACC_FREQ_8LSB,     0x4c },
 328
 329                 { /* end of list */ },
 330         };
 331
 332         set_audio_start(core, 0x0010,
 333                         EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
 334         set_audio_registers(core, nicam_common);
 335         switch (core->tvaudio) {
 336         case WW_NICAM_I:
 337                 dprintk("%s PAL-I NICAM (status: unknown)\n",__FUNCTION__);
 338                 set_audio_registers(core, nicam_pal_i);
 339                 break;
 340         case WW_NICAM_BGDKL:
 341                 dprintk("%s PAL-BGDK NICAM (status: unknown)\n",__FUNCTION__);
 342                 set_audio_registers(core, nicam_default);
 343                 break;
 344         };
 345         set_audio_finish(core);
 346 }
 347 #endif
 348
 349 static void set_audio_standard_NICAM_L(struct cx88_core *core, int stereo)
 350 {
 351         /* This is probably weird..
 352          * Let's operate and find out. */
 353
 354         static const struct rlist nicam_l_mono[] = {
 355                 { AUD_ERRLOGPERIOD_R,     0x00000064 },
 356                 { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
 357                 { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
 358                 { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
 359
 360                 { AUD_PDF_DDS_CNST_BYTE2, 0x48 },
 361                 { AUD_PDF_DDS_CNST_BYTE1, 0x3D },
 362                 { AUD_QAM_MODE,           0x00 },
 363                 { AUD_PDF_DDS_CNST_BYTE0, 0xf5 },
 364                 { AUD_PHACC_FREQ_8MSB,    0x3a },
 365                 { AUD_PHACC_FREQ_8LSB,    0x4a },
 366
 367                 { AUD_DEEMPHGAIN_R, 0x6680 },
 368                 { AUD_DEEMPHNUMER1_R, 0x353DE },
 369                 { AUD_DEEMPHNUMER2_R, 0x1B1 },
 370                 { AUD_DEEMPHDENOM1_R, 0x0F3D0 },
 371                 { AUD_DEEMPHDENOM2_R, 0x0 },
 372                 { AUD_FM_MODE_ENABLE, 0x7 },
 373                 { AUD_POLYPH80SCALEFAC, 0x3 },
 374                 { AUD_AFE_12DB_EN, 0x1 },
 375                 { AAGC_GAIN, 0x0 },
 376                 { AAGC_HYST, 0x18 },
 377                 { AAGC_DEF, 0x20 },
 378                 { AUD_DN0_FREQ, 0x0 },
 379                 { AUD_POLY0_DDS_CONSTANT, 0x0E4DB2 },
 380                 { AUD_DCOC_0_SRC, 0x21 },
 381                 { AUD_IIR1_0_SEL, 0x0 },
 382                 { AUD_IIR1_0_SHIFT, 0x7 },
 383                 { AUD_IIR1_1_SEL, 0x2 },
 384                 { AUD_IIR1_1_SHIFT, 0x0 },
 385                 { AUD_DCOC_1_SRC, 0x3 },
 386                 { AUD_DCOC1_SHIFT, 0x0 },
 387                 { AUD_DCOC_PASS_IN, 0x0 },
 388                 { AUD_IIR1_2_SEL, 0x23 },
 389                 { AUD_IIR1_2_SHIFT, 0x0 },
 390                 { AUD_IIR1_3_SEL, 0x4 },
 391                 { AUD_IIR1_3_SHIFT, 0x7 },
 392                 { AUD_IIR1_4_SEL, 0x5 },
 393                 { AUD_IIR1_4_SHIFT, 0x7 },
 394                 { AUD_IIR3_0_SEL, 0x7 },
 395                 { AUD_IIR3_0_SHIFT, 0x0 },
 396                 { AUD_DEEMPH0_SRC_SEL, 0x11 },
 397                 { AUD_DEEMPH0_SHIFT, 0x0 },
 398                 { AUD_DEEMPH0_G0, 0x7000 },
 399                 { AUD_DEEMPH0_A0, 0x0 },
 400                 { AUD_DEEMPH0_B0, 0x0 },
 401                 { AUD_DEEMPH0_A1, 0x0 },
 402                 { AUD_DEEMPH0_B1, 0x0 },
 403                 { AUD_DEEMPH1_SRC_SEL, 0x11 },
 404                 { AUD_DEEMPH1_SHIFT, 0x0 },
 405                 { AUD_DEEMPH1_G0, 0x7000 },
 406                 { AUD_DEEMPH1_A0, 0x0 },
 407                 { AUD_DEEMPH1_B0, 0x0 },
 408                 { AUD_DEEMPH1_A1, 0x0 },
 409                 { AUD_DEEMPH1_B1, 0x0 },
 410                 { AUD_OUT0_SEL, 0x3F },
 411                 { AUD_OUT1_SEL, 0x3F },
 412                 { AUD_DMD_RA_DDS, 0x0F5C285 },
 413                 { AUD_PLL_INT, 0x1E },
 414                 { AUD_PLL_DDS, 0x0 },
 415                 { AUD_PLL_FRAC, 0x0E542 },
 416
 417                 // setup QAM registers
 418                 { AUD_RATE_ADJ1,      0x00000100 },
 419                 { AUD_RATE_ADJ2,      0x00000200 },
 420                 { AUD_RATE_ADJ3,      0x00000300 },
 421                 { AUD_RATE_ADJ4,      0x00000400 },
 422                 { AUD_RATE_ADJ5,      0x00000500 },
 423                 { AUD_RATE_THRES_DMD, 0x000000C0 },
 424                 { /* end of list */ },
 425         };
 426
 427         static const struct rlist nicam_l[] = {
 428                 // setup QAM registers
 429                 { AUD_RATE_ADJ1, 0x00000060 },
 430                 { AUD_RATE_ADJ2, 0x000000F9 },
 431                 { AUD_RATE_ADJ3, 0x000001CC },
 432                 { AUD_RATE_ADJ4, 0x000002B3 },
 433                 { AUD_RATE_ADJ5, 0x00000726 },
 434                 { AUD_DEEMPHDENOM1_R, 0x0000F3D0 },
 435                 { AUD_DEEMPHDENOM2_R, 0x00000000 },
 436                 { AUD_ERRLOGPERIOD_R, 0x00000064 },
 437                 { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
 438                 { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
 439                 { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
 440                 { AUD_POLYPH80SCALEFAC, 0x00000003 },
 441                 { AUD_DMD_RA_DDS, 0x00C00000 },
 442                 { AUD_PLL_INT, 0x0000001E },
 443                 { AUD_PLL_DDS, 0x00000000 },
 444                 { AUD_PLL_FRAC, 0x0000E542 },
 445                 { AUD_START_TIMER, 0x00000000 },
 446                 { AUD_DEEMPHNUMER1_R, 0x000353DE },
 447                 { AUD_DEEMPHNUMER2_R, 0x000001B1 },
 448                 { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
 449                 { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
 450                 { AUD_QAM_MODE, 0x05 },
 451                 { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
 452                 { AUD_PHACC_FREQ_8MSB, 0x34 },
 453                 { AUD_PHACC_FREQ_8LSB, 0x4C },
 454                 { AUD_DEEMPHGAIN_R, 0x00006680 },
 455                 { AUD_RATE_THRES_DMD, 0x000000C0  },
 456                 { /* end of list */ },
 457         } ;
 458         dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
 459
 460         if (!stereo) {
 461                 /* AM mono sound */
 462                 set_audio_start(core, 0x0004,
 463                                 0x100c /* FIXME again */);
 464                 set_audio_registers(core, nicam_l_mono);
 465         } else {
 466                 set_audio_start(core, 0x0010,
 467                                 0x1924 /* FIXME again */);
 468                 set_audio_registers(core, nicam_l);
 469         }
 470         set_audio_finish(core);
 471
 472 }
 473
 474 static void set_audio_standard_PAL_I(struct cx88_core *core, int stereo)
 475 {
 476        static const struct rlist pal_i_fm_mono[] = {
 477             {AUD_ERRLOGPERIOD_R,       0x00000064},
 478             {AUD_ERRINTRPTTHSHLD1_R,   0x00000fff},
 479             {AUD_ERRINTRPTTHSHLD2_R,   0x0000001f},
 480             {AUD_ERRINTRPTTHSHLD3_R,   0x0000000f},
 481             {AUD_PDF_DDS_CNST_BYTE2,   0x06},
 482             {AUD_PDF_DDS_CNST_BYTE1,   0x82},
 483             {AUD_PDF_DDS_CNST_BYTE0,   0x12},
 484             {AUD_QAM_MODE,             0x05},
 485             {AUD_PHACC_FREQ_8MSB,      0x3a},
 486             {AUD_PHACC_FREQ_8LSB,      0x93},
 487             {AUD_DMD_RA_DDS,           0x002a4f2f},
 488             {AUD_PLL_INT,              0x0000001e},
 489             {AUD_PLL_DDS,              0x00000004},
 490             {AUD_PLL_FRAC,             0x0000e542},
 491             {AUD_RATE_ADJ1,            0x00000100},
 492             {AUD_RATE_ADJ2,            0x00000200},
 493             {AUD_RATE_ADJ3,            0x00000300},
 494             {AUD_RATE_ADJ4,            0x00000400},
 495             {AUD_RATE_ADJ5,            0x00000500},
 496             {AUD_THR_FR,               0x00000000},
 497             {AUD_PILOT_BQD_1_K0,       0x0000755b},
 498             {AUD_PILOT_BQD_1_K1,       0x00551340},
 499             {AUD_PILOT_BQD_1_K2,       0x006d30be},
 500             {AUD_PILOT_BQD_1_K3,       0xffd394af},
 501             {AUD_PILOT_BQD_1_K4,       0x00400000},
 502             {AUD_PILOT_BQD_2_K0,       0x00040000},
 503             {AUD_PILOT_BQD_2_K1,       0x002a4841},
 504             {AUD_PILOT_BQD_2_K2,       0x00400000},
 505             {AUD_PILOT_BQD_2_K3,       0x00000000},
 506             {AUD_PILOT_BQD_2_K4,       0x00000000},
 507             {AUD_MODE_CHG_TIMER,       0x00000060},
 508             {AUD_AFE_12DB_EN,          0x00000001},
 509             {AAGC_HYST,                0x0000000a},
 510             {AUD_CORDIC_SHIFT_0,       0x00000007},
 511             {AUD_CORDIC_SHIFT_1,       0x00000007},
 512             {AUD_C1_UP_THR,            0x00007000},
 513             {AUD_C1_LO_THR,            0x00005400},
 514             {AUD_C2_UP_THR,            0x00005400},
 515             {AUD_C2_LO_THR,            0x00003000},
 516             {AUD_DCOC_0_SRC,           0x0000001a},
 517             {AUD_DCOC0_SHIFT,          0x00000000},
 518             {AUD_DCOC_0_SHIFT_IN0,     0x0000000a},
 519             {AUD_DCOC_0_SHIFT_IN1,     0x00000008},
 520             {AUD_DCOC_PASS_IN,         0x00000003},
 521             {AUD_IIR3_0_SEL,           0x00000021},
 522             {AUD_DN2_AFC,              0x00000002},
 523             {AUD_DCOC_1_SRC,           0x0000001b},
 524             {AUD_DCOC1_SHIFT,          0x00000000},
 525             {AUD_DCOC_1_SHIFT_IN0,     0x0000000a},
 526             {AUD_DCOC_1_SHIFT_IN1,     0x00000008},
 527             {AUD_IIR3_1_SEL,           0x00000023},
 528             {AUD_DN0_FREQ,             0x000035a3},
 529             {AUD_DN2_FREQ,             0x000029c7},
 530             {AUD_CRDC0_SRC_SEL,        0x00000511},
 531             {AUD_IIR1_0_SEL,           0x00000001},
 532             {AUD_IIR1_1_SEL,           0x00000000},
 533             {AUD_IIR3_2_SEL,           0x00000003},
 534             {AUD_IIR3_2_SHIFT,         0x00000000},
 535             {AUD_IIR3_0_SEL,           0x00000002},
 536             {AUD_IIR2_0_SEL,           0x00000021},
 537             {AUD_IIR2_0_SHIFT,         0x00000002},
 538             {AUD_DEEMPH0_SRC_SEL,      0x0000000b},
 539             {AUD_DEEMPH1_SRC_SEL,      0x0000000b},
 540             {AUD_POLYPH80SCALEFAC,     0x00000001},
 541             {AUD_START_TIMER,          0x00000000},
 542             { /* end of list */ },
 543        };
 544
 545        static const struct rlist pal_i_nicam[] = {
 546            { AUD_RATE_ADJ1,           0x00000010 },
 547            { AUD_RATE_ADJ2,           0x00000040 },
 548            { AUD_RATE_ADJ3,           0x00000100 },
 549            { AUD_RATE_ADJ4,           0x00000400 },
 550            { AUD_RATE_ADJ5,           0x00001000 },
 551            //     { AUD_DMD_RA_DDS,          0x00c0d5ce },
 552            { AUD_DEEMPHGAIN_R,        0x000023c2 },
 553            { AUD_DEEMPHNUMER1_R,      0x0002a7bc },
 554            { AUD_DEEMPHNUMER2_R,      0x0003023e },
 555            { AUD_DEEMPHDENOM1_R,      0x0000f3d0 },
 556            { AUD_DEEMPHDENOM2_R,      0x00000000 },
 557            { AUD_DEEMPHDENOM2_R,      0x00000000 },
 558            { AUD_ERRLOGPERIOD_R,      0x00000fff },
 559            { AUD_ERRINTRPTTHSHLD1_R,  0x000003ff },
 560            { AUD_ERRINTRPTTHSHLD2_R,  0x000000ff },
 561            { AUD_ERRINTRPTTHSHLD3_R,  0x0000003f },
 562            { AUD_POLYPH80SCALEFAC,    0x00000003 },
 563            { AUD_PDF_DDS_CNST_BYTE2,  0x06 },
 564            { AUD_PDF_DDS_CNST_BYTE1,  0x82 },
 565            { AUD_PDF_DDS_CNST_BYTE0,  0x16 },
 566            { AUD_QAM_MODE,            0x05 },
 567            { AUD_PDF_DDS_CNST_BYTE0,  0x12 },
 568            { AUD_PHACC_FREQ_8MSB,     0x3a },
 569            { AUD_PHACC_FREQ_8LSB,     0x93 },
 570             { /* end of list */ },
 571         };
 572
 573         dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
 574
 575         if (!stereo) {
 576                 // FM mono
 577                 set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_FORCE_MONO1);
 578                 set_audio_registers(core, pal_i_fm_mono);
 579         } else {
 580                 // Nicam Stereo
 581                 set_audio_start(core, 0x0010, EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
 582                 set_audio_registers(core, pal_i_nicam);
 583         }
 584         set_audio_finish(core);
 585 }
 586
 587 static void set_audio_standard_A2(struct cx88_core *core)
 588 {
 589         /* from dscaler cvs */
 590         static const struct rlist a2_common[] = {
 591                 { AUD_PDF_DDS_CNST_BYTE2,     0x06 },
 592                 { AUD_PDF_DDS_CNST_BYTE1,     0x82 },
 593                 { AUD_PDF_DDS_CNST_BYTE0,     0x12 },
 594                 { AUD_QAM_MODE,               0x05 },
 595                 { AUD_PHACC_FREQ_8MSB,        0x34 },
 596                 { AUD_PHACC_FREQ_8LSB,        0x4c },
 597
 598                 { AUD_RATE_ADJ1,        0x00001000 },
 599                 { AUD_RATE_ADJ2,        0x00002000 },
 600                 { AUD_RATE_ADJ3,        0x00003000 },
 601                 { AUD_RATE_ADJ4,        0x00004000 },
 602                 { AUD_RATE_ADJ5,        0x00005000 },
 603                 { AUD_THR_FR,           0x00000000 },
 604                 { AAGC_HYST,            0x0000001a },
 605                 { AUD_PILOT_BQD_1_K0,   0x0000755b },
 606                 { AUD_PILOT_BQD_1_K1,   0x00551340 },
 607                 { AUD_PILOT_BQD_1_K2,   0x006d30be },
 608                 { AUD_PILOT_BQD_1_K3,   0xffd394af },
 609                 { AUD_PILOT_BQD_1_K4,   0x00400000 },
 610                 { AUD_PILOT_BQD_2_K0,   0x00040000 },
 611                 { AUD_PILOT_BQD_2_K1,   0x002a4841 },
 612                 { AUD_PILOT_BQD_2_K2,   0x00400000 },
 613                 { AUD_PILOT_BQD_2_K3,   0x00000000 },
 614                 { AUD_PILOT_BQD_2_K4,   0x00000000 },
 615                 { AUD_MODE_CHG_TIMER,   0x00000040 },
 616                 { AUD_START_TIMER,      0x00000200 },
 617                 { AUD_AFE_12DB_EN,      0x00000000 },
 618                 { AUD_CORDIC_SHIFT_0,   0x00000007 },
 619                 { AUD_CORDIC_SHIFT_1,   0x00000007 },
 620                 { AUD_DEEMPH0_G0,       0x00000380 },
 621                 { AUD_DEEMPH1_G0,       0x00000380 },
 622                 { AUD_DCOC_0_SRC,       0x0000001a },
 623                 { AUD_DCOC0_SHIFT,      0x00000000 },
 624                 { AUD_DCOC_0_SHIFT_IN0, 0x0000000a },
 625                 { AUD_DCOC_0_SHIFT_IN1, 0x00000008 },
 626                 { AUD_DCOC_PASS_IN,     0x00000003 },
 627                 { AUD_IIR3_0_SEL,       0x00000021 },
 628                 { AUD_DN2_AFC,          0x00000002 },
 629                 { AUD_DCOC_1_SRC,       0x0000001b },
 630                 { AUD_DCOC1_SHIFT,      0x00000000 },
 631                 { AUD_DCOC_1_SHIFT_IN0, 0x0000000a },
 632                 { AUD_DCOC_1_SHIFT_IN1, 0x00000008 },
 633                 { AUD_IIR3_1_SEL,       0x00000023 },
 634                 { AUD_RDSI_SEL,         0x00000017 },
 635                 { AUD_RDSI_SHIFT,       0x00000000 },
 636                 { AUD_RDSQ_SEL,         0x00000017 },
 637                 { AUD_RDSQ_SHIFT,       0x00000000 },
 638                 { AUD_POLYPH80SCALEFAC, 0x00000001 },
 639
 640                 { /* end of list */ },
 641         };
 642
 643         static const struct rlist a2_table1[] = {
 644                 // PAL-BG
 645                 { AUD_DMD_RA_DDS,       0x002a73bd },
 646                 { AUD_C1_UP_THR,        0x00007000 },
 647                 { AUD_C1_LO_THR,        0x00005400 },
 648                 { AUD_C2_UP_THR,        0x00005400 },
 649                 { AUD_C2_LO_THR,        0x00003000 },
 650                 { /* end of list */ },
 651         };
 652         static const struct rlist a2_table2[] = {
 653                 // PAL-DK
 654                 { AUD_DMD_RA_DDS,       0x002a73bd },
 655                 { AUD_C1_UP_THR,        0x00007000 },
 656                 { AUD_C1_LO_THR,        0x00005400 },
 657                 { AUD_C2_UP_THR,        0x00005400 },
 658                 { AUD_C2_LO_THR,        0x00003000 },
 659                 { AUD_DN0_FREQ,         0x00003a1c },
 660                 { AUD_DN2_FREQ,         0x0000d2e0 },
 661                 { /* end of list */ },
 662         };
 663         static const struct rlist a2_table3[] = {
 664                 // unknown, probably NTSC-M
 665                 { AUD_DMD_RA_DDS,       0x002a2873 },
 666                 { AUD_C1_UP_THR,        0x00003c00 },
 667                 { AUD_C1_LO_THR,        0x00003000 },
 668                 { AUD_C2_UP_THR,        0x00006000 },
 669                 { AUD_C2_LO_THR,        0x00003c00 },
 670                 { AUD_DN0_FREQ,         0x00002836 },
 671                 { AUD_DN1_FREQ,         0x00003418 },
 672                 { AUD_DN2_FREQ,         0x000029c7 },
 673                 { AUD_POLY0_DDS_CONSTANT, 0x000a7540 },
 674                 { /* end of list */ },
 675         };
 676
 677         set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_AUTO_STEREO);
 678         set_audio_registers(core, a2_common);
 679         switch (core->tvaudio) {
 680         case WW_A2_BG:
 681                 dprintk("%s PAL-BG A2 (status: known-good)\n",__FUNCTION__);
 682                 set_audio_registers(core, a2_table1);
 683                 break;
 684         case WW_A2_DK:
 685                 dprintk("%s PAL-DK A2 (status: known-good)\n",__FUNCTION__);
 686                 set_audio_registers(core, a2_table2);
 687                 break;
 688         case WW_A2_M:
 689                 dprintk("%s NTSC-M A2 (status: unknown)\n",__FUNCTION__);
 690                 set_audio_registers(core, a2_table3);
 691                 break;
 692         };
 693         set_audio_finish(core);
 694 }
 695
 696 static void set_audio_standard_EIAJ(struct cx88_core *core)
 697 {
 698         static const struct rlist eiaj[] = {
 699                 /* TODO: eiaj register settings are not there yet ... */
 700
 701                 { /* end of list */ },
 702         };
 703         dprintk("%s (status: unknown)\n",__FUNCTION__);
 704
 705         set_audio_start(core, 0x0002, EN_EIAJ_AUTO_STEREO);
 706         set_audio_registers(core, eiaj);
 707         set_audio_finish(core);
 708 }
 709
 710 static void set_audio_standard_FM(struct cx88_core *core)
 711 {
 712 #if 0 /* FIXME */
 713         switch (dev->audio_properties.FM_deemphasis)
 714         {
 715                 case WW_FM_DEEMPH_50:
 716                         //Set De-emphasis filter coefficients for 50 usec
 717                         cx_write(AUD_DEEMPH0_G0, 0x0C45);
 718                         cx_write(AUD_DEEMPH0_A0, 0x6262);
 719                         cx_write(AUD_DEEMPH0_B0, 0x1C29);
 720                         cx_write(AUD_DEEMPH0_A1, 0x3FC66);
 721                         cx_write(AUD_DEEMPH0_B1, 0x399A);
 722
 723                         cx_write(AUD_DEEMPH1_G0, 0x0D80);
 724                         cx_write(AUD_DEEMPH1_A0, 0x6262);
 725                         cx_write(AUD_DEEMPH1_B0, 0x1C29);
 726                         cx_write(AUD_DEEMPH1_A1, 0x3FC66);
 727                         cx_write(AUD_DEEMPH1_B1, 0x399A);
 728
 729                         break;
 730
 731                 case WW_FM_DEEMPH_75:
 732                         //Set De-emphasis filter coefficients for 75 usec
 733                         cx_write(AUD_DEEMPH0_G0, 0x91B );
 734                         cx_write(AUD_DEEMPH0_A0, 0x6B68);
 735                         cx_write(AUD_DEEMPH0_B0, 0x11EC);
 736                         cx_write(AUD_DEEMPH0_A1, 0x3FC66);
 737                         cx_write(AUD_DEEMPH0_B1, 0x399A);
 738
 739                         cx_write(AUD_DEEMPH1_G0, 0xAA0 );
 740                         cx_write(AUD_DEEMPH1_A0, 0x6B68);
 741                         cx_write(AUD_DEEMPH1_B0, 0x11EC);
 742                         cx_write(AUD_DEEMPH1_A1, 0x3FC66);
 743                         cx_write(AUD_DEEMPH1_B1, 0x399A);
 744
 745                         break;
 746         }
 747 #endif
 748
 749         dprintk("%s (status: unknown)\n",__FUNCTION__);
 750         set_audio_start(core, 0x0020, EN_FMRADIO_AUTO_STEREO);
 751
 752         // AB: 10/2/01: this register is not being reset appropriately on occasion.
 753         cx_write(AUD_POLYPH80SCALEFAC,3);
 754
 755         set_audio_finish(core);
 756 }
 757
 758 /* ----------------------------------------------------------- */
 759
 760 void cx88_set_tvaudio(struct cx88_core *core)
 761 {
 762         switch (core->tvaudio) {
 763         case WW_BTSC:
 764                 set_audio_standard_BTSC(core,0);
 765                 break;
 766         case WW_NICAM_BGDKL:
 767                 set_audio_standard_NICAM_L(core,0);
 768                 break;
 769         case WW_NICAM_I:
 770                 set_audio_standard_PAL_I(core,0);
 771                 break;
 772         case WW_A2_BG:
 773         case WW_A2_DK:
 774         case WW_A2_M:
 775                 set_audio_standard_A2(core);
 776                 break;
 777         case WW_EIAJ:
 778                 set_audio_standard_EIAJ(core);
 779                 break;
 780         case WW_FM:
 781                 set_audio_standard_FM(core);
 782                 break;
 783         case WW_SYSTEM_L_AM:
 784                 set_audio_standard_NICAM_L(core, 1);
 785                 break;
 786         case WW_NONE:
 787         default:
 788                 printk("%s/0: unknown tv audio mode [%d]\n",
 789                        core->name, core->tvaudio);
 790                 break;
 791         }
 792         return;
 793 }
 794
 795 void cx88_newstation(struct cx88_core *core)
 796 {
 797         core->audiomode_manual = UNSET;
 798
 799         switch (core->tvaudio) {
 800         case WW_SYSTEM_L_AM:
 801                 /* try nicam ... */
 802                 core->audiomode_current = V4L2_TUNER_MODE_STEREO;
 803                 set_audio_standard_NICAM_L(core, 1);
 804                 break;
 805         }
 806 }
 807
 808 void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 809 {
 810         static char *m[] = {"stereo", "dual mono", "mono", "sap"};
 811         static char *p[] = {"no pilot", "pilot c1", "pilot c2", "?"};
 812         u32 reg,mode,pilot;
 813
 814         reg   = cx_read(AUD_STATUS);
 815         mode  = reg & 0x03;
 816         pilot = (reg >> 2) & 0x03;
 817
 818         if (core->astat != reg)
 819                 dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
 820                         reg, m[mode], p[pilot],
 821                         aud_ctl_names[cx_read(AUD_CTL) & 63]);
 822         core->astat = reg;
 823
 824         t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
 825                 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
 826         t->rxsubchans = V4L2_TUNER_SUB_MONO;
 827         t->audmode    = V4L2_TUNER_MODE_MONO;
 828
 829         switch (core->tvaudio) {
 830         case WW_BTSC:
 831                 t->capability = V4L2_TUNER_CAP_STEREO |
 832                         V4L2_TUNER_CAP_SAP;
 833                 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
 834                 if (1 == pilot) {
 835                         /* SAP */
 836                         t->rxsubchans |= V4L2_TUNER_SUB_SAP;
 837                 }
 838                 break;
 839         case WW_A2_BG:
 840         case WW_A2_DK:
 841         case WW_A2_M:
 842                 if (1 == pilot) {
 843                         /* stereo */
 844                         t->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 845                         if (0 == mode)
 846                                 t->audmode = V4L2_TUNER_MODE_STEREO;
 847                 }
 848                 if (2 == pilot) {
 849                         /* dual language -- FIXME */
 850                         t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 851                         t->audmode = V4L2_TUNER_MODE_LANG1;
 852                 }
 853                 break;
 854         case WW_NICAM_BGDKL:
 855                 if (0 == mode) {
 856                         t->audmode = V4L2_TUNER_MODE_STEREO;
 857                         t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 858                 }
 859                 break;
 860         case WW_SYSTEM_L_AM:
 861                 if (0x0 == mode && !(cx_read(AUD_INIT) & 0x04)) {
 862                         t->audmode = V4L2_TUNER_MODE_STEREO;
 863                         t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 864                 }
 865                 break ;
 866         default:
 867                 /* nothing */
 868                 break;
 869         }
 870         return;
 871 }
 872
 873 void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 874 {
 875         u32 ctl  = UNSET;
 876         u32 mask = UNSET;
 877
 878         if (manual) {
 879                 core->audiomode_manual = mode;
 880         } else {
 881                 if (UNSET != core->audiomode_manual)
 882                         return;
 883         }
 884         core->audiomode_current = mode;
 885
 886         switch (core->tvaudio) {
 887         case WW_BTSC:
 888                 switch (mode) {
 889                 case V4L2_TUNER_MODE_MONO:
 890                         ctl  = EN_BTSC_FORCE_MONO;
 891                         mask = 0x3f;
 892                         break;
 893                 case V4L2_TUNER_MODE_SAP:
 894                         ctl  = EN_BTSC_FORCE_SAP;
 895                         mask = 0x3f;
 896                         break;
 897                 case V4L2_TUNER_MODE_STEREO:
 898                         ctl  = EN_BTSC_AUTO_STEREO;
 899                         mask = 0x3f;
 900                         break;
 901                 }
 902                 break;
 903         case WW_A2_BG:
 904         case WW_A2_DK:
 905         case WW_A2_M:
 906                 switch (mode) {
 907                 case V4L2_TUNER_MODE_MONO:
 908                 case V4L2_TUNER_MODE_LANG1:
 909                         ctl  = EN_A2_FORCE_MONO1;
 910                         mask = 0x3f;
 911                         break;
 912                 case V4L2_TUNER_MODE_LANG2:
 913                         ctl  = EN_A2_AUTO_MONO2;
 914                         mask = 0x3f;
 915                         break;
 916                 case V4L2_TUNER_MODE_STEREO:
 917                         ctl  = EN_A2_AUTO_STEREO | EN_DMTRX_SUMR;
 918                         mask = 0x8bf;
 919                         break;
 920                 }
 921                 break;
 922         case WW_NICAM_BGDKL:
 923                 switch (mode) {
 924                 case V4L2_TUNER_MODE_MONO:
 925                         ctl  = EN_NICAM_FORCE_MONO1;
 926                         mask = 0x3f;
 927                         break;
 928                 case V4L2_TUNER_MODE_LANG1:
 929                         ctl  = EN_NICAM_AUTO_MONO2;
 930                         mask = 0x3f;
 931                         break;
 932                 case V4L2_TUNER_MODE_STEREO:
 933                         ctl  = EN_NICAM_FORCE_STEREO | EN_DMTRX_LR;
 934                         mask = 0x93f;
 935                         break;
 936                 }
 937                 break;
 938         case WW_SYSTEM_L_AM:
 939                 switch (mode) {
 940                 case V4L2_TUNER_MODE_MONO:
 941                 case V4L2_TUNER_MODE_LANG1:  /* FIXME */
 942                         set_audio_standard_NICAM_L(core, 0);
 943                         break;
 944                 case V4L2_TUNER_MODE_STEREO:
 945                         set_audio_standard_NICAM_L(core, 1);
 946                         break;
 947                 }
 948                 break;
 949         case WW_NICAM_I:
 950                 switch (mode) {
 951                 case V4L2_TUNER_MODE_MONO:
 952                 case V4L2_TUNER_MODE_LANG1:
 953                         set_audio_standard_PAL_I(core, 0);
 954                         break;
 955                 case V4L2_TUNER_MODE_STEREO:
 956                         set_audio_standard_PAL_I(core, 1);
 957                         break;
 958                 }
 959                 break;
 960         case WW_FM:
 961                 switch (mode) {
 962                 case V4L2_TUNER_MODE_MONO:
 963                         ctl  = EN_FMRADIO_FORCE_MONO;
 964                         mask = 0x3f;
 965                         break;
 966                 case V4L2_TUNER_MODE_STEREO:
 967                         ctl  = EN_FMRADIO_AUTO_STEREO;
 968                         mask = 0x3f;
 969                         break;
 970                 }
 971                 break;
 972         }
 973
 974         if (UNSET != ctl) {
 975                 dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
 976                         "[status=0x%x,ctl=0x%x,vol=0x%x]\n",
 977                         mask, ctl, cx_read(AUD_STATUS),
 978                         cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
 979                 cx_andor(AUD_CTL, mask, ctl);
 980         }
 981         return;
 982 }
 983
 984 int cx88_audio_thread(void *data)
 985 {
 986         struct cx88_core *core = data;
 987         struct v4l2_tuner t;
 988         u32 mode = 0;
 989
 990         dprintk("cx88: tvaudio thread started\n");
 991         for (;;) {
 992                 msleep_interruptible(1000);
 993                 if (kthread_should_stop())
 994                         break;
 995
 996                 /* just monitor the audio status for now ... */
 997                 memset(&t,0,sizeof(t));
 998                 cx88_get_stereo(core,&t);
 999
1000                 if (UNSET != core->audiomode_manual)
1001                         /* manually set, don't do anything. */
1002                         continue;
1003
1004                 /* monitor signal */
1005                 if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
1006                         mode = V4L2_TUNER_MODE_STEREO;
1007                 else
1008                         mode = V4L2_TUNER_MODE_MONO;
1009                 if (mode == core->audiomode_current)
1010                         continue;
1011
1012                 /* automatically switch to best available mode */
1013                 cx88_set_stereo(core, mode, 0);
1014         }
1015
1016         dprintk("cx88: tvaudio thread exiting\n");
1017         return 0;
1018 }
1019
1020 /* ----------------------------------------------------------- */
1021
1022 EXPORT_SYMBOL(cx88_set_tvaudio);
1023 EXPORT_SYMBOL(cx88_newstation);
1024 EXPORT_SYMBOL(cx88_set_stereo);
1025 EXPORT_SYMBOL(cx88_get_stereo);
1026 EXPORT_SYMBOL(cx88_audio_thread);
1027
1028 /*
1029  * Local variables:
1030  * c-basic-offset: 8
1031  * End:
1032  */