git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/cx88/cx88-tvaudio.c

   1 /*
   2     $Id: cx88-tvaudio.c,v 1.37 2005/07/07 13:58:38 mchehab 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         cx_write(AUD_AFE_12DB_EN,   0x0000);
 132
 133         // start programming
 134         cx_write(AUD_CTL,           0x0000);
 135         cx_write(AUD_INIT,          mode);
 136         cx_write(AUD_INIT_LD,       0x0001);
 137         cx_write(AUD_SOFT_RESET,    0x0001);
 138
 139         cx_write(AUD_CTL,           ctl);
 140 }
 141
 142 static void set_audio_finish(struct cx88_core *core)
 143 {
 144         u32 volume;
 145
 146         if (cx88_boards[core->board].blackbird) {
 147                 // sets sound input from external adc
 148                 cx_set(AUD_CTL, EN_I2SIN_ENABLE);
 149                 //cx_write(AUD_I2SINPUTCNTL, 0);
 150                 cx_write(AUD_I2SINPUTCNTL, 4);
 151                 cx_write(AUD_BAUDRATE, 1);
 152                 // 'pass-thru mode': this enables the i2s output to the mpeg encoder
 153                 cx_set(AUD_CTL, EN_I2SOUT_ENABLE);
 154                 cx_write(AUD_I2SOUTPUTCNTL, 1);
 155                 cx_write(AUD_I2SCNTL, 0);
 156                 //cx_write(AUD_APB_IN_RATE_ADJ, 0);
 157         }
 158
 159         // finish programming
 160         cx_write(AUD_SOFT_RESET, 0x0000);
 161
 162         // start audio processing
 163         cx_set(AUD_CTL, EN_DAC_ENABLE);
 164
 165         // unmute
 166         volume = cx_sread(SHADOW_AUD_VOL_CTL);
 167         cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
 168 }
 169
 170 /* ----------------------------------------------------------- */
 171
 172 static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap)
 173 {
 174         static const struct rlist btsc[] = {
 175                 /* from dscaler */
 176                 { AUD_OUT1_SEL,                0x00000013 },
 177                 { AUD_OUT1_SHIFT,              0x00000000 },
 178                 { AUD_POLY0_DDS_CONSTANT,      0x0012010c },
 179                 { AUD_DMD_RA_DDS,              0x00c3e7aa },
 180                 { AUD_DBX_IN_GAIN,             0x00004734 },
 181                 { AUD_DBX_WBE_GAIN,            0x00004640 },
 182                 { AUD_DBX_SE_GAIN,             0x00008d31 },
 183                 { AUD_DCOC_0_SRC,              0x0000001a },
 184                 { AUD_IIR1_4_SEL,              0x00000021 },
 185                 { AUD_DCOC_PASS_IN,            0x00000003 },
 186                 { AUD_DCOC_0_SHIFT_IN0,        0x0000000a },
 187                 { AUD_DCOC_0_SHIFT_IN1,        0x00000008 },
 188                 { AUD_DCOC_1_SHIFT_IN0,        0x0000000a },
 189                 { AUD_DCOC_1_SHIFT_IN1,        0x00000008 },
 190                 { AUD_DN0_FREQ,                0x0000283b },
 191                 { AUD_DN2_SRC_SEL,             0x00000008 },
 192                 { AUD_DN2_FREQ,                0x00003000 },
 193                 { AUD_DN2_AFC,                 0x00000002 },
 194                 { AUD_DN2_SHFT,                0x00000000 },
 195                 { AUD_IIR2_2_SEL,              0x00000020 },
 196                 { AUD_IIR2_2_SHIFT,            0x00000000 },
 197                 { AUD_IIR2_3_SEL,              0x0000001f },
 198                 { AUD_IIR2_3_SHIFT,            0x00000000 },
 199                 { AUD_CRDC1_SRC_SEL,           0x000003ce },
 200                 { AUD_CRDC1_SHIFT,             0x00000000 },
 201                 { AUD_CORDIC_SHIFT_1,          0x00000007 },
 202                 { AUD_DCOC_1_SRC,              0x0000001b },
 203                 { AUD_DCOC1_SHIFT,             0x00000000 },
 204                 { AUD_RDSI_SEL,                0x00000008 },
 205                 { AUD_RDSQ_SEL,                0x00000008 },
 206                 { AUD_RDSI_SHIFT,              0x00000000 },
 207                 { AUD_RDSQ_SHIFT,              0x00000000 },
 208                 { AUD_POLYPH80SCALEFAC,        0x00000003 },
 209                 { /* end of list */ },
 210         };
 211         static const struct rlist btsc_sap[] = {
 212                 { AUD_DBX_IN_GAIN,             0x00007200 },
 213                 { AUD_DBX_WBE_GAIN,            0x00006200 },
 214                 { AUD_DBX_SE_GAIN,             0x00006200 },
 215                 { AUD_IIR1_1_SEL,              0x00000000 },
 216                 { AUD_IIR1_3_SEL,              0x00000001 },
 217                 { AUD_DN1_SRC_SEL,             0x00000007 },
 218                 { AUD_IIR1_4_SHIFT,            0x00000006 },
 219                 { AUD_IIR2_1_SHIFT,            0x00000000 },
 220                 { AUD_IIR2_2_SHIFT,            0x00000000 },
 221                 { AUD_IIR3_0_SHIFT,            0x00000000 },
 222                 { AUD_IIR3_1_SHIFT,            0x00000000 },
 223                 { AUD_IIR3_0_SEL,              0x0000000d },
 224                 { AUD_IIR3_1_SEL,              0x0000000e },
 225                 { AUD_DEEMPH1_SRC_SEL,         0x00000014 },
 226                 { AUD_DEEMPH1_SHIFT,           0x00000000 },
 227                 { AUD_DEEMPH1_G0,              0x00004000 },
 228                 { AUD_DEEMPH1_A0,              0x00000000 },
 229                 { AUD_DEEMPH1_B0,              0x00000000 },
 230                 { AUD_DEEMPH1_A1,              0x00000000 },
 231                 { AUD_DEEMPH1_B1,              0x00000000 },
 232                 { AUD_OUT0_SEL,                0x0000003f },
 233                 { AUD_OUT1_SEL,                0x0000003f },
 234                 { AUD_DN1_AFC,                 0x00000002 },
 235                 { AUD_DCOC_0_SHIFT_IN0,        0x0000000a },
 236                 { AUD_DCOC_0_SHIFT_IN1,        0x00000008 },
 237                 { AUD_DCOC_1_SHIFT_IN0,        0x0000000a },
 238                 { AUD_DCOC_1_SHIFT_IN1,        0x00000008 },
 239                 { AUD_IIR1_0_SEL,              0x0000001d },
 240                 { AUD_IIR1_2_SEL,              0x0000001e },
 241                 { AUD_IIR2_1_SEL,              0x00000002 },
 242                 { AUD_IIR2_2_SEL,              0x00000004 },
 243                 { AUD_IIR3_2_SEL,              0x0000000f },
 244                 { AUD_DCOC2_SHIFT,             0x00000001 },
 245                 { AUD_IIR3_2_SHIFT,            0x00000001 },
 246                 { AUD_DEEMPH0_SRC_SEL,         0x00000014 },
 247                 { AUD_CORDIC_SHIFT_1,          0x00000006 },
 248                 { AUD_POLY0_DDS_CONSTANT,      0x000e4db2 },
 249                 { AUD_DMD_RA_DDS,              0x00f696e6 },
 250                 { AUD_IIR2_3_SEL,              0x00000025 },
 251                 { AUD_IIR1_4_SEL,              0x00000021 },
 252                 { AUD_DN1_FREQ,                0x0000c965 },
 253                 { AUD_DCOC_PASS_IN,            0x00000003 },
 254                 { AUD_DCOC_0_SRC,              0x0000001a },
 255                 { AUD_DCOC_1_SRC,              0x0000001b },
 256                 { AUD_DCOC1_SHIFT,             0x00000000 },
 257                 { AUD_RDSI_SEL,                0x00000009 },
 258                 { AUD_RDSQ_SEL,                0x00000009 },
 259                 { AUD_RDSI_SHIFT,              0x00000000 },
 260                 { AUD_RDSQ_SHIFT,              0x00000000 },
 261                 { AUD_POLYPH80SCALEFAC,        0x00000003 },
 262                 { /* end of list */ },
 263         };
 264
 265         // dscaler: exactly taken from driver,
 266         // dscaler: don't know why to set EN_FMRADIO_EN_RDS
 267         if (sap) {
 268                 dprintk("%s SAP (status: unknown)\n",__FUNCTION__);
 269                 set_audio_start(core, 0x0001,
 270                                 EN_FMRADIO_EN_RDS | EN_BTSC_FORCE_SAP);
 271                 set_audio_registers(core, btsc_sap);
 272         } else {
 273                 dprintk("%s (status: known-good)\n",__FUNCTION__);
 274                 set_audio_start(core, 0x0001,
 275                                 EN_FMRADIO_EN_RDS | EN_BTSC_AUTO_STEREO);
 276                 set_audio_registers(core, btsc);
 277         }
 278         set_audio_finish(core);
 279 }
 280
 281
 282 static void set_audio_standard_NICAM_L(struct cx88_core *core, int stereo)
 283 {
 284         /* This is probably weird..
 285          * Let's operate and find out. */
 286
 287         static const struct rlist nicam_l_mono[] = {
 288                 { AUD_ERRLOGPERIOD_R,     0x00000064 },
 289                 { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
 290                 { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
 291                 { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
 292
 293                 { AUD_PDF_DDS_CNST_BYTE2, 0x48 },
 294                 { AUD_PDF_DDS_CNST_BYTE1, 0x3D },
 295                 { AUD_QAM_MODE,           0x00 },
 296                 { AUD_PDF_DDS_CNST_BYTE0, 0xf5 },
 297                 { AUD_PHACC_FREQ_8MSB,    0x3a },
 298                 { AUD_PHACC_FREQ_8LSB,    0x4a },
 299
 300                 { AUD_DEEMPHGAIN_R, 0x6680 },
 301                 { AUD_DEEMPHNUMER1_R, 0x353DE },
 302                 { AUD_DEEMPHNUMER2_R, 0x1B1 },
 303                 { AUD_DEEMPHDENOM1_R, 0x0F3D0 },
 304                 { AUD_DEEMPHDENOM2_R, 0x0 },
 305                 { AUD_FM_MODE_ENABLE, 0x7 },
 306                 { AUD_POLYPH80SCALEFAC, 0x3 },
 307                 { AUD_AFE_12DB_EN, 0x1 },
 308                 { AAGC_GAIN, 0x0 },
 309                 { AAGC_HYST, 0x18 },
 310                 { AAGC_DEF, 0x20 },
 311                 { AUD_DN0_FREQ, 0x0 },
 312                 { AUD_POLY0_DDS_CONSTANT, 0x0E4DB2 },
 313                 { AUD_DCOC_0_SRC, 0x21 },
 314                 { AUD_IIR1_0_SEL, 0x0 },
 315                 { AUD_IIR1_0_SHIFT, 0x7 },
 316                 { AUD_IIR1_1_SEL, 0x2 },
 317                 { AUD_IIR1_1_SHIFT, 0x0 },
 318                 { AUD_DCOC_1_SRC, 0x3 },
 319                 { AUD_DCOC1_SHIFT, 0x0 },
 320                 { AUD_DCOC_PASS_IN, 0x0 },
 321                 { AUD_IIR1_2_SEL, 0x23 },
 322                 { AUD_IIR1_2_SHIFT, 0x0 },
 323                 { AUD_IIR1_3_SEL, 0x4 },
 324                 { AUD_IIR1_3_SHIFT, 0x7 },
 325                 { AUD_IIR1_4_SEL, 0x5 },
 326                 { AUD_IIR1_4_SHIFT, 0x7 },
 327                 { AUD_IIR3_0_SEL, 0x7 },
 328                 { AUD_IIR3_0_SHIFT, 0x0 },
 329                 { AUD_DEEMPH0_SRC_SEL, 0x11 },
 330                 { AUD_DEEMPH0_SHIFT, 0x0 },
 331                 { AUD_DEEMPH0_G0, 0x7000 },
 332                 { AUD_DEEMPH0_A0, 0x0 },
 333                 { AUD_DEEMPH0_B0, 0x0 },
 334                 { AUD_DEEMPH0_A1, 0x0 },
 335                 { AUD_DEEMPH0_B1, 0x0 },
 336                 { AUD_DEEMPH1_SRC_SEL, 0x11 },
 337                 { AUD_DEEMPH1_SHIFT, 0x0 },
 338                 { AUD_DEEMPH1_G0, 0x7000 },
 339                 { AUD_DEEMPH1_A0, 0x0 },
 340                 { AUD_DEEMPH1_B0, 0x0 },
 341                 { AUD_DEEMPH1_A1, 0x0 },
 342                 { AUD_DEEMPH1_B1, 0x0 },
 343                 { AUD_OUT0_SEL, 0x3F },
 344                 { AUD_OUT1_SEL, 0x3F },
 345                 { AUD_DMD_RA_DDS, 0x0F5C285 },
 346                 { AUD_PLL_INT, 0x1E },
 347                 { AUD_PLL_DDS, 0x0 },
 348                 { AUD_PLL_FRAC, 0x0E542 },
 349
 350                 // setup QAM registers
 351                 { AUD_RATE_ADJ1,      0x00000100 },
 352                 { AUD_RATE_ADJ2,      0x00000200 },
 353                 { AUD_RATE_ADJ3,      0x00000300 },
 354                 { AUD_RATE_ADJ4,      0x00000400 },
 355                 { AUD_RATE_ADJ5,      0x00000500 },
 356                 { AUD_RATE_THRES_DMD, 0x000000C0 },
 357                 { /* end of list */ },
 358         };
 359
 360         static const struct rlist nicam_l[] = {
 361                 // setup QAM registers
 362                 { AUD_RATE_ADJ1, 0x00000060 },
 363                 { AUD_RATE_ADJ2, 0x000000F9 },
 364                 { AUD_RATE_ADJ3, 0x000001CC },
 365                 { AUD_RATE_ADJ4, 0x000002B3 },
 366                 { AUD_RATE_ADJ5, 0x00000726 },
 367                 { AUD_DEEMPHDENOM1_R, 0x0000F3D0 },
 368                 { AUD_DEEMPHDENOM2_R, 0x00000000 },
 369                 { AUD_ERRLOGPERIOD_R, 0x00000064 },
 370                 { AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF },
 371                 { AUD_ERRINTRPTTHSHLD2_R, 0x0000001F },
 372                 { AUD_ERRINTRPTTHSHLD3_R, 0x0000000F },
 373                 { AUD_POLYPH80SCALEFAC, 0x00000003 },
 374                 { AUD_DMD_RA_DDS, 0x00C00000 },
 375                 { AUD_PLL_INT, 0x0000001E },
 376                 { AUD_PLL_DDS, 0x00000000 },
 377                 { AUD_PLL_FRAC, 0x0000E542 },
 378                 { AUD_START_TIMER, 0x00000000 },
 379                 { AUD_DEEMPHNUMER1_R, 0x000353DE },
 380                 { AUD_DEEMPHNUMER2_R, 0x000001B1 },
 381                 { AUD_PDF_DDS_CNST_BYTE2, 0x06 },
 382                 { AUD_PDF_DDS_CNST_BYTE1, 0x82 },
 383                 { AUD_QAM_MODE, 0x05 },
 384                 { AUD_PDF_DDS_CNST_BYTE0, 0x12 },
 385                 { AUD_PHACC_FREQ_8MSB, 0x34 },
 386                 { AUD_PHACC_FREQ_8LSB, 0x4C },
 387                 { AUD_DEEMPHGAIN_R, 0x00006680 },
 388                 { AUD_RATE_THRES_DMD, 0x000000C0  },
 389                 { /* end of list */ },
 390         } ;
 391         dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
 392
 393         if (!stereo) {
 394                 /* AM mono sound */
 395                 set_audio_start(core, 0x0004,
 396                                 0x100c /* FIXME again */);
 397                 set_audio_registers(core, nicam_l_mono);
 398         } else {
 399                 set_audio_start(core, 0x0010,
 400                                 0x1924 /* FIXME again */);
 401                 set_audio_registers(core, nicam_l);
 402         }
 403         set_audio_finish(core);
 404
 405 }
 406
 407 static void set_audio_standard_PAL_I(struct cx88_core *core, int stereo)
 408 {
 409        static const struct rlist pal_i_fm_mono[] = {
 410             {AUD_ERRLOGPERIOD_R,       0x00000064},
 411             {AUD_ERRINTRPTTHSHLD1_R,   0x00000fff},
 412             {AUD_ERRINTRPTTHSHLD2_R,   0x0000001f},
 413             {AUD_ERRINTRPTTHSHLD3_R,   0x0000000f},
 414             {AUD_PDF_DDS_CNST_BYTE2,   0x06},
 415             {AUD_PDF_DDS_CNST_BYTE1,   0x82},
 416             {AUD_PDF_DDS_CNST_BYTE0,   0x12},
 417             {AUD_QAM_MODE,             0x05},
 418             {AUD_PHACC_FREQ_8MSB,      0x3a},
 419             {AUD_PHACC_FREQ_8LSB,      0x93},
 420             {AUD_DMD_RA_DDS,           0x002a4f2f},
 421             {AUD_PLL_INT,              0x0000001e},
 422             {AUD_PLL_DDS,              0x00000004},
 423             {AUD_PLL_FRAC,             0x0000e542},
 424             {AUD_RATE_ADJ1,            0x00000100},
 425             {AUD_RATE_ADJ2,            0x00000200},
 426             {AUD_RATE_ADJ3,            0x00000300},
 427             {AUD_RATE_ADJ4,            0x00000400},
 428             {AUD_RATE_ADJ5,            0x00000500},
 429             {AUD_THR_FR,               0x00000000},
 430             {AUD_PILOT_BQD_1_K0,       0x0000755b},
 431             {AUD_PILOT_BQD_1_K1,       0x00551340},
 432             {AUD_PILOT_BQD_1_K2,       0x006d30be},
 433             {AUD_PILOT_BQD_1_K3,       0xffd394af},
 434             {AUD_PILOT_BQD_1_K4,       0x00400000},
 435             {AUD_PILOT_BQD_2_K0,       0x00040000},
 436             {AUD_PILOT_BQD_2_K1,       0x002a4841},
 437             {AUD_PILOT_BQD_2_K2,       0x00400000},
 438             {AUD_PILOT_BQD_2_K3,       0x00000000},
 439             {AUD_PILOT_BQD_2_K4,       0x00000000},
 440             {AUD_MODE_CHG_TIMER,       0x00000060},
 441             {AUD_AFE_12DB_EN,          0x00000001},
 442             {AAGC_HYST,                0x0000000a},
 443             {AUD_CORDIC_SHIFT_0,       0x00000007},
 444             {AUD_CORDIC_SHIFT_1,       0x00000007},
 445             {AUD_C1_UP_THR,            0x00007000},
 446             {AUD_C1_LO_THR,            0x00005400},
 447             {AUD_C2_UP_THR,            0x00005400},
 448             {AUD_C2_LO_THR,            0x00003000},
 449             {AUD_DCOC_0_SRC,           0x0000001a},
 450             {AUD_DCOC0_SHIFT,          0x00000000},
 451             {AUD_DCOC_0_SHIFT_IN0,     0x0000000a},
 452             {AUD_DCOC_0_SHIFT_IN1,     0x00000008},
 453             {AUD_DCOC_PASS_IN,         0x00000003},
 454             {AUD_IIR3_0_SEL,           0x00000021},
 455             {AUD_DN2_AFC,              0x00000002},
 456             {AUD_DCOC_1_SRC,           0x0000001b},
 457             {AUD_DCOC1_SHIFT,          0x00000000},
 458             {AUD_DCOC_1_SHIFT_IN0,     0x0000000a},
 459             {AUD_DCOC_1_SHIFT_IN1,     0x00000008},
 460             {AUD_IIR3_1_SEL,           0x00000023},
 461             {AUD_DN0_FREQ,             0x000035a3},
 462             {AUD_DN2_FREQ,             0x000029c7},
 463             {AUD_CRDC0_SRC_SEL,        0x00000511},
 464             {AUD_IIR1_0_SEL,           0x00000001},
 465             {AUD_IIR1_1_SEL,           0x00000000},
 466             {AUD_IIR3_2_SEL,           0x00000003},
 467             {AUD_IIR3_2_SHIFT,         0x00000000},
 468             {AUD_IIR3_0_SEL,           0x00000002},
 469             {AUD_IIR2_0_SEL,           0x00000021},
 470             {AUD_IIR2_0_SHIFT,         0x00000002},
 471             {AUD_DEEMPH0_SRC_SEL,      0x0000000b},
 472             {AUD_DEEMPH1_SRC_SEL,      0x0000000b},
 473             {AUD_POLYPH80SCALEFAC,     0x00000001},
 474             {AUD_START_TIMER,          0x00000000},
 475             { /* end of list */ },
 476        };
 477
 478        static const struct rlist pal_i_nicam[] = {
 479            { AUD_RATE_ADJ1,           0x00000010 },
 480            { AUD_RATE_ADJ2,           0x00000040 },
 481            { AUD_RATE_ADJ3,           0x00000100 },
 482            { AUD_RATE_ADJ4,           0x00000400 },
 483            { AUD_RATE_ADJ5,           0x00001000 },
 484            //     { AUD_DMD_RA_DDS,          0x00c0d5ce },
 485            { AUD_DEEMPHGAIN_R,        0x000023c2 },
 486            { AUD_DEEMPHNUMER1_R,      0x0002a7bc },
 487            { AUD_DEEMPHNUMER2_R,      0x0003023e },
 488            { AUD_DEEMPHDENOM1_R,      0x0000f3d0 },
 489            { AUD_DEEMPHDENOM2_R,      0x00000000 },
 490            { AUD_DEEMPHDENOM2_R,      0x00000000 },
 491            { AUD_ERRLOGPERIOD_R,      0x00000fff },
 492            { AUD_ERRINTRPTTHSHLD1_R,  0x000003ff },
 493            { AUD_ERRINTRPTTHSHLD2_R,  0x000000ff },
 494            { AUD_ERRINTRPTTHSHLD3_R,  0x0000003f },
 495            { AUD_POLYPH80SCALEFAC,    0x00000003 },
 496            { AUD_PDF_DDS_CNST_BYTE2,  0x06 },
 497            { AUD_PDF_DDS_CNST_BYTE1,  0x82 },
 498            { AUD_PDF_DDS_CNST_BYTE0,  0x16 },
 499            { AUD_QAM_MODE,            0x05 },
 500            { AUD_PDF_DDS_CNST_BYTE0,  0x12 },
 501            { AUD_PHACC_FREQ_8MSB,     0x3a },
 502            { AUD_PHACC_FREQ_8LSB,     0x93 },
 503             { /* end of list */ },
 504         };
 505
 506         dprintk("%s (status: devel), stereo : %d\n",__FUNCTION__,stereo);
 507
 508         if (!stereo) {
 509                 // FM mono
 510                 set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_FORCE_MONO1);
 511                 set_audio_registers(core, pal_i_fm_mono);
 512         } else {
 513                 // Nicam Stereo
 514                 set_audio_start(core, 0x0010, EN_DMTRX_LR | EN_DMTRX_BYPASS | EN_NICAM_AUTO_STEREO);
 515                 set_audio_registers(core, pal_i_nicam);
 516         }
 517         set_audio_finish(core);
 518 }
 519
 520 static void set_audio_standard_A2(struct cx88_core *core)
 521 {
 522         /* from dscaler cvs */
 523         static const struct rlist a2_common[] = {
 524                 { AUD_PDF_DDS_CNST_BYTE2,     0x06 },
 525                 { AUD_PDF_DDS_CNST_BYTE1,     0x82 },
 526                 { AUD_PDF_DDS_CNST_BYTE0,     0x12 },
 527                 { AUD_QAM_MODE,               0x05 },
 528                 { AUD_PHACC_FREQ_8MSB,        0x34 },
 529                 { AUD_PHACC_FREQ_8LSB,        0x4c },
 530
 531                 { AUD_RATE_ADJ1,        0x00001000 },
 532                 { AUD_RATE_ADJ2,        0x00002000 },
 533                 { AUD_RATE_ADJ3,        0x00003000 },
 534                 { AUD_RATE_ADJ4,        0x00004000 },
 535                 { AUD_RATE_ADJ5,        0x00005000 },
 536                 { AUD_THR_FR,           0x00000000 },
 537                 { AAGC_HYST,            0x0000001a },
 538                 { AUD_PILOT_BQD_1_K0,   0x0000755b },
 539                 { AUD_PILOT_BQD_1_K1,   0x00551340 },
 540                 { AUD_PILOT_BQD_1_K2,   0x006d30be },
 541                 { AUD_PILOT_BQD_1_K3,   0xffd394af },
 542                 { AUD_PILOT_BQD_1_K4,   0x00400000 },
 543                 { AUD_PILOT_BQD_2_K0,   0x00040000 },
 544                 { AUD_PILOT_BQD_2_K1,   0x002a4841 },
 545                 { AUD_PILOT_BQD_2_K2,   0x00400000 },
 546                 { AUD_PILOT_BQD_2_K3,   0x00000000 },
 547                 { AUD_PILOT_BQD_2_K4,   0x00000000 },
 548                 { AUD_MODE_CHG_TIMER,   0x00000040 },
 549                 { AUD_START_TIMER,      0x00000200 },
 550                 { AUD_AFE_12DB_EN,      0x00000000 },
 551                 { AUD_CORDIC_SHIFT_0,   0x00000007 },
 552                 { AUD_CORDIC_SHIFT_1,   0x00000007 },
 553                 { AUD_DEEMPH0_G0,       0x00000380 },
 554                 { AUD_DEEMPH1_G0,       0x00000380 },
 555                 { AUD_DCOC_0_SRC,       0x0000001a },
 556                 { AUD_DCOC0_SHIFT,      0x00000000 },
 557                 { AUD_DCOC_0_SHIFT_IN0, 0x0000000a },
 558                 { AUD_DCOC_0_SHIFT_IN1, 0x00000008 },
 559                 { AUD_DCOC_PASS_IN,     0x00000003 },
 560                 { AUD_IIR3_0_SEL,       0x00000021 },
 561                 { AUD_DN2_AFC,          0x00000002 },
 562                 { AUD_DCOC_1_SRC,       0x0000001b },
 563                 { AUD_DCOC1_SHIFT,      0x00000000 },
 564                 { AUD_DCOC_1_SHIFT_IN0, 0x0000000a },
 565                 { AUD_DCOC_1_SHIFT_IN1, 0x00000008 },
 566                 { AUD_IIR3_1_SEL,       0x00000023 },
 567                 { AUD_RDSI_SEL,         0x00000017 },
 568                 { AUD_RDSI_SHIFT,       0x00000000 },
 569                 { AUD_RDSQ_SEL,         0x00000017 },
 570                 { AUD_RDSQ_SHIFT,       0x00000000 },
 571                 { AUD_POLYPH80SCALEFAC, 0x00000001 },
 572
 573                 { /* end of list */ },
 574         };
 575
 576         static const struct rlist a2_table1[] = {
 577                 // PAL-BG
 578                 { AUD_DMD_RA_DDS,       0x002a73bd },
 579                 { AUD_C1_UP_THR,        0x00007000 },
 580                 { AUD_C1_LO_THR,        0x00005400 },
 581                 { AUD_C2_UP_THR,        0x00005400 },
 582                 { AUD_C2_LO_THR,        0x00003000 },
 583                 { /* end of list */ },
 584         };
 585         static const struct rlist a2_table2[] = {
 586                 // PAL-DK
 587                 { AUD_DMD_RA_DDS,       0x002a73bd },
 588                 { AUD_C1_UP_THR,        0x00007000 },
 589                 { AUD_C1_LO_THR,        0x00005400 },
 590                 { AUD_C2_UP_THR,        0x00005400 },
 591                 { AUD_C2_LO_THR,        0x00003000 },
 592                 { AUD_DN0_FREQ,         0x00003a1c },
 593                 { AUD_DN2_FREQ,         0x0000d2e0 },
 594                 { /* end of list */ },
 595         };
 596         static const struct rlist a2_table3[] = {
 597                 // unknown, probably NTSC-M
 598                 { AUD_DMD_RA_DDS,       0x002a2873 },
 599                 { AUD_C1_UP_THR,        0x00003c00 },
 600                 { AUD_C1_LO_THR,        0x00003000 },
 601                 { AUD_C2_UP_THR,        0x00006000 },
 602                 { AUD_C2_LO_THR,        0x00003c00 },
 603                 { AUD_DN0_FREQ,         0x00002836 },
 604                 { AUD_DN1_FREQ,         0x00003418 },
 605                 { AUD_DN2_FREQ,         0x000029c7 },
 606                 { AUD_POLY0_DDS_CONSTANT, 0x000a7540 },
 607                 { /* end of list */ },
 608         };
 609
 610         set_audio_start(core, 0x0004, EN_DMTRX_SUMDIFF | EN_A2_AUTO_STEREO);
 611         set_audio_registers(core, a2_common);
 612         switch (core->tvaudio) {
 613         case WW_A2_BG:
 614                 dprintk("%s PAL-BG A2 (status: known-good)\n",__FUNCTION__);
 615                 set_audio_registers(core, a2_table1);
 616                 break;
 617         case WW_A2_DK:
 618                 dprintk("%s PAL-DK A2 (status: known-good)\n",__FUNCTION__);
 619                 set_audio_registers(core, a2_table2);
 620                 break;
 621         case WW_A2_M:
 622                 dprintk("%s NTSC-M A2 (status: unknown)\n",__FUNCTION__);
 623                 set_audio_registers(core, a2_table3);
 624                 break;
 625         };
 626         set_audio_finish(core);
 627 }
 628
 629 static void set_audio_standard_EIAJ(struct cx88_core *core)
 630 {
 631         static const struct rlist eiaj[] = {
 632                 /* TODO: eiaj register settings are not there yet ... */
 633
 634                 { /* end of list */ },
 635         };
 636         dprintk("%s (status: unknown)\n",__FUNCTION__);
 637
 638         set_audio_start(core, 0x0002, EN_EIAJ_AUTO_STEREO);
 639         set_audio_registers(core, eiaj);
 640         set_audio_finish(core);
 641 }
 642
 643 static void set_audio_standard_FM(struct cx88_core *core, enum cx88_deemph_type deemph)
 644 {
 645         static const struct rlist fm_deemph_50[] = {
 646                 { AUD_DEEMPH0_G0,       0x0C45 },
 647                 { AUD_DEEMPH0_A0,       0x6262 },
 648                 { AUD_DEEMPH0_B0,       0x1C29 },
 649                 { AUD_DEEMPH0_A1,       0x3FC66},
 650                 { AUD_DEEMPH0_B1,       0x399A },
 651
 652                 { AUD_DEEMPH1_G0,       0x0D80 },
 653                 { AUD_DEEMPH1_A0,       0x6262 },
 654                 { AUD_DEEMPH1_B0,       0x1C29 },
 655                 { AUD_DEEMPH1_A1,       0x3FC66},
 656                 { AUD_DEEMPH1_B1,       0x399A},
 657
 658                 { AUD_POLYPH80SCALEFAC, 0x0003},
 659                 { /* end of list */ },
 660         };
 661         static const struct rlist fm_deemph_75[] = {
 662                 { AUD_DEEMPH0_G0,       0x091B },
 663                 { AUD_DEEMPH0_A0,       0x6B68 },
 664                 { AUD_DEEMPH0_B0,       0x11EC },
 665                 { AUD_DEEMPH0_A1,       0x3FC66},
 666                 { AUD_DEEMPH0_B1,       0x399A },
 667
 668                 { AUD_DEEMPH1_G0,       0x0AA0 },
 669                 { AUD_DEEMPH1_A0,       0x6B68 },
 670                 { AUD_DEEMPH1_B0,       0x11EC },
 671                 { AUD_DEEMPH1_A1,       0x3FC66},
 672                 { AUD_DEEMPH1_B1,       0x399A},
 673
 674                 { AUD_POLYPH80SCALEFAC, 0x0003},
 675                 { /* end of list */ },
 676         };
 677
 678         /* It is enough to leave default values? */
 679         static const struct rlist fm_no_deemph[] = {
 680
 681                 { AUD_POLYPH80SCALEFAC, 0x0003},
 682                 { /* end of list */ },
 683         };
 684
 685         dprintk("%s (status: unknown)\n",__FUNCTION__);
 686         set_audio_start(core, 0x0020, EN_FMRADIO_AUTO_STEREO);
 687
 688         switch (deemph)
 689         {
 690                 case FM_NO_DEEMPH:
 691                         set_audio_registers(core, fm_no_deemph);
 692                         break;
 693
 694                 case FM_DEEMPH_50:
 695                         set_audio_registers(core, fm_deemph_50);
 696                         break;
 697
 698                 case FM_DEEMPH_75:
 699                         set_audio_registers(core, fm_deemph_75);
 700                         break;
 701         }
 702
 703         set_audio_finish(core);
 704 }
 705
 706 /* ----------------------------------------------------------- */
 707
 708 void cx88_set_tvaudio(struct cx88_core *core)
 709 {
 710         switch (core->tvaudio) {
 711         case WW_BTSC:
 712                 set_audio_standard_BTSC(core,0);
 713                 break;
 714         case WW_NICAM_BGDKL:
 715                 set_audio_standard_NICAM_L(core,0);
 716                 break;
 717         case WW_NICAM_I:
 718                 set_audio_standard_PAL_I(core,0);
 719                 break;
 720         case WW_A2_BG:
 721         case WW_A2_DK:
 722         case WW_A2_M:
 723                 set_audio_standard_A2(core);
 724                 break;
 725         case WW_EIAJ:
 726                 set_audio_standard_EIAJ(core);
 727                 break;
 728         case WW_FM:
 729                 set_audio_standard_FM(core,FM_NO_DEEMPH);
 730                 break;
 731         case WW_SYSTEM_L_AM:
 732                 set_audio_standard_NICAM_L(core, 1);
 733                 break;
 734         case WW_NONE:
 735         default:
 736                 printk("%s/0: unknown tv audio mode [%d]\n",
 737                        core->name, core->tvaudio);
 738                 break;
 739         }
 740         return;
 741 }
 742
 743 void cx88_newstation(struct cx88_core *core)
 744 {
 745         core->audiomode_manual = UNSET;
 746
 747         switch (core->tvaudio) {
 748         case WW_SYSTEM_L_AM:
 749                 /* try nicam ... */
 750                 core->audiomode_current = V4L2_TUNER_MODE_STEREO;
 751                 set_audio_standard_NICAM_L(core, 1);
 752                 break;
 753         }
 754 }
 755
 756 void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 757 {
 758         static char *m[] = {"stereo", "dual mono", "mono", "sap"};
 759         static char *p[] = {"no pilot", "pilot c1", "pilot c2", "?"};
 760         u32 reg,mode,pilot;
 761
 762         reg   = cx_read(AUD_STATUS);
 763         mode  = reg & 0x03;
 764         pilot = (reg >> 2) & 0x03;
 765
 766         if (core->astat != reg)
 767                 dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
 768                         reg, m[mode], p[pilot],
 769                         aud_ctl_names[cx_read(AUD_CTL) & 63]);
 770         core->astat = reg;
 771
 772         t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
 773                 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
 774         t->rxsubchans = V4L2_TUNER_SUB_MONO;
 775         t->audmode    = V4L2_TUNER_MODE_MONO;
 776
 777         switch (core->tvaudio) {
 778         case WW_BTSC:
 779                 t->capability = V4L2_TUNER_CAP_STEREO |
 780                         V4L2_TUNER_CAP_SAP;
 781                 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
 782                 if (1 == pilot) {
 783                         /* SAP */
 784                         t->rxsubchans |= V4L2_TUNER_SUB_SAP;
 785                 }
 786                 break;
 787         case WW_A2_BG:
 788         case WW_A2_DK:
 789         case WW_A2_M:
 790                 if (1 == pilot) {
 791                         /* stereo */
 792                         t->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 793                         if (0 == mode)
 794                                 t->audmode = V4L2_TUNER_MODE_STEREO;
 795                 }
 796                 if (2 == pilot) {
 797                         /* dual language -- FIXME */
 798                         t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 799                         t->audmode = V4L2_TUNER_MODE_LANG1;
 800                 }
 801                 break;
 802         case WW_NICAM_BGDKL:
 803                 if (0 == mode) {
 804                         t->audmode = V4L2_TUNER_MODE_STEREO;
 805                         t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 806                 }
 807                 break;
 808         case WW_SYSTEM_L_AM:
 809                 if (0x0 == mode && !(cx_read(AUD_INIT) & 0x04)) {
 810                         t->audmode = V4L2_TUNER_MODE_STEREO;
 811                         t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 812                 }
 813                 break ;
 814         default:
 815                 /* nothing */
 816                 break;
 817         }
 818         return;
 819 }
 820
 821 void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 822 {
 823         u32 ctl  = UNSET;
 824         u32 mask = UNSET;
 825
 826         if (manual) {
 827                 core->audiomode_manual = mode;
 828         } else {
 829                 if (UNSET != core->audiomode_manual)
 830                         return;
 831         }
 832         core->audiomode_current = mode;
 833
 834         switch (core->tvaudio) {
 835         case WW_BTSC:
 836                 switch (mode) {
 837                 case V4L2_TUNER_MODE_MONO:
 838                         ctl  = EN_BTSC_FORCE_MONO;
 839                         mask = 0x3f;
 840                         break;
 841                 case V4L2_TUNER_MODE_SAP:
 842                         ctl  = EN_BTSC_FORCE_SAP;
 843                         mask = 0x3f;
 844                         break;
 845                 case V4L2_TUNER_MODE_STEREO:
 846                         ctl  = EN_BTSC_AUTO_STEREO;
 847                         mask = 0x3f;
 848                         break;
 849                 }
 850                 break;
 851         case WW_A2_BG:
 852         case WW_A2_DK:
 853         case WW_A2_M:
 854                 switch (mode) {
 855                 case V4L2_TUNER_MODE_MONO:
 856                 case V4L2_TUNER_MODE_LANG1:
 857                         ctl  = EN_A2_FORCE_MONO1;
 858                         mask = 0x3f;
 859                         break;
 860                 case V4L2_TUNER_MODE_LANG2:
 861                         ctl  = EN_A2_AUTO_MONO2;
 862                         mask = 0x3f;
 863                         break;
 864                 case V4L2_TUNER_MODE_STEREO:
 865                         ctl  = EN_A2_AUTO_STEREO | EN_DMTRX_SUMR;
 866                         mask = 0x8bf;
 867                         break;
 868                 }
 869                 break;
 870         case WW_NICAM_BGDKL:
 871                 switch (mode) {
 872                 case V4L2_TUNER_MODE_MONO:
 873                         ctl  = EN_NICAM_FORCE_MONO1;
 874                         mask = 0x3f;
 875                         break;
 876                 case V4L2_TUNER_MODE_LANG1:
 877                         ctl  = EN_NICAM_AUTO_MONO2;
 878                         mask = 0x3f;
 879                         break;
 880                 case V4L2_TUNER_MODE_STEREO:
 881                         ctl  = EN_NICAM_FORCE_STEREO | EN_DMTRX_LR;
 882                         mask = 0x93f;
 883                         break;
 884                 }
 885                 break;
 886         case WW_SYSTEM_L_AM:
 887                 switch (mode) {
 888                 case V4L2_TUNER_MODE_MONO:
 889                 case V4L2_TUNER_MODE_LANG1:  /* FIXME */
 890                         set_audio_standard_NICAM_L(core, 0);
 891                         break;
 892                 case V4L2_TUNER_MODE_STEREO:
 893                         set_audio_standard_NICAM_L(core, 1);
 894                         break;
 895                 }
 896                 break;
 897         case WW_NICAM_I:
 898                 switch (mode) {
 899                 case V4L2_TUNER_MODE_MONO:
 900                 case V4L2_TUNER_MODE_LANG1:
 901                         set_audio_standard_PAL_I(core, 0);
 902                         break;
 903                 case V4L2_TUNER_MODE_STEREO:
 904                         set_audio_standard_PAL_I(core, 1);
 905                         break;
 906                 }
 907                 break;
 908         case WW_FM:
 909                 switch (mode) {
 910                 case V4L2_TUNER_MODE_MONO:
 911                         ctl  = EN_FMRADIO_FORCE_MONO;
 912                         mask = 0x3f;
 913                         break;
 914                 case V4L2_TUNER_MODE_STEREO:
 915                         ctl  = EN_FMRADIO_AUTO_STEREO;
 916                         mask = 0x3f;
 917                         break;
 918                 }
 919                 break;
 920         }
 921
 922         if (UNSET != ctl) {
 923                 dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
 924                         "[status=0x%x,ctl=0x%x,vol=0x%x]\n",
 925                         mask, ctl, cx_read(AUD_STATUS),
 926                         cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
 927                 cx_andor(AUD_CTL, mask, ctl);
 928         }
 929         return;
 930 }
 931
 932 int cx88_audio_thread(void *data)
 933 {
 934         struct cx88_core *core = data;
 935         struct v4l2_tuner t;
 936         u32 mode = 0;
 937
 938         dprintk("cx88: tvaudio thread started\n");
 939         for (;;) {
 940                 msleep_interruptible(1000);
 941                 if (kthread_should_stop())
 942                         break;
 943
 944                 /* just monitor the audio status for now ... */
 945                 memset(&t,0,sizeof(t));
 946                 cx88_get_stereo(core,&t);
 947
 948                 if (UNSET != core->audiomode_manual)
 949                         /* manually set, don't do anything. */
 950                         continue;
 951
 952                 /* monitor signal */
 953                 if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
 954                         mode = V4L2_TUNER_MODE_STEREO;
 955                 else
 956                         mode = V4L2_TUNER_MODE_MONO;
 957                 if (mode == core->audiomode_current)
 958                         continue;
 959
 960                 /* automatically switch to best available mode */
 961                 cx88_set_stereo(core, mode, 0);
 962         }
 963
 964         dprintk("cx88: tvaudio thread exiting\n");
 965         return 0;
 966 }
 967
 968 /* ----------------------------------------------------------- */
 969
 970 EXPORT_SYMBOL(cx88_set_tvaudio);
 971 EXPORT_SYMBOL(cx88_newstation);
 972 EXPORT_SYMBOL(cx88_set_stereo);
 973 EXPORT_SYMBOL(cx88_get_stereo);
 974 EXPORT_SYMBOL(cx88_audio_thread);
 975
 976 /*
 977  * Local variables:
 978  * c-basic-offset: 8
 979  * End:
 980  * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
 981  */