kernel/2.6.29.6-aldebaran-rt/drivers/media/video/cx88/cx88-tvaudio.c

   1 /*
   2
   3     cx88x-audio.c - Conexant CX23880/23881 audio downstream driver driver
   4
   5      (c) 2001 Michael Eskin, Tom Zakrajsek [Windows version]
   6      (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
   7      (c) 2003 Gerd Knorr <kraxel@bytesex.org>
   8
   9     -----------------------------------------------------------------------
  10
  11     Lot of voodoo here.  Even the data sheet doesn't help to
  12     understand what is going on here, the documentation for the audio
  13     part of the cx2388x chip is *very* bad.
  14
  15     Some of this comes from party done linux driver sources I got from
  16     [undocumented].
  17
  18     Some comes from the dscaler sources, one of the dscaler driver guy works
  19     for Conexant ...
  20
  21     -----------------------------------------------------------------------
  22
  23     This program is free software; you can redistribute it and/or modify
  24     it under the terms of the GNU General Public License as published by
  25     the Free Software Foundation; either version 2 of the License, or
  26     (at your option) any later version.
  27
  28     This program is distributed in the hope that it will be useful,
  29     but WITHOUT ANY WARRANTY; without even the implied warranty of
  30     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  31     GNU General Public License for more details.
  32
  33     You should have received a copy of the GNU General Public License
  34     along with this program; if not, write to the Free Software
  35     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  36 */
  37
  38 #include <linux/module.h>
  39 #include <linux/errno.h>
  40 #include <linux/freezer.h>
  41 #include <linux/kernel.h>
  42 #include <linux/slab.h>
  43 #include <linux/mm.h>
  44 #include <linux/poll.h>
  45 #include <linux/signal.h>
  46 #include <linux/ioport.h>
  47 #include <linux/types.h>
  48 #include <linux/interrupt.h>
  49 #include <linux/vmalloc.h>
  50 #include <linux/init.h>
  51 #include <linux/delay.h>
  52 #include <linux/kthread.h>
  53
  54 #include "cx88.h"
  55
  56 static unsigned int audio_debug;
  57 module_param(audio_debug, int, 0644);
  58 MODULE_PARM_DESC(audio_debug, "enable debug messages [audio]");
  59
  60 static unsigned int always_analog;
  61 module_param(always_analog,int,0644);
  62 MODULE_PARM_DESC(always_analog,"force analog audio out");
  63
  64 static unsigned int radio_deemphasis;
  65 module_param(radio_deemphasis,int,0644);
  66 MODULE_PARM_DESC(radio_deemphasis, "Radio deemphasis time constant, "
  67                  "0=None, 1=50us (elsewhere), 2=75us (USA)");
  68
  69 #define dprintk(fmt, arg...)    if (audio_debug) \
  70         printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
  71
  72 /* ----------------------------------------------------------- */
  73
  74 static char *aud_ctl_names[64] = {
  75         [EN_BTSC_FORCE_MONO] = "BTSC_FORCE_MONO",
  76         [EN_BTSC_FORCE_STEREO] = "BTSC_FORCE_STEREO",
  77         [EN_BTSC_FORCE_SAP] = "BTSC_FORCE_SAP",
  78         [EN_BTSC_AUTO_STEREO] = "BTSC_AUTO_STEREO",
  79         [EN_BTSC_AUTO_SAP] = "BTSC_AUTO_SAP",
  80         [EN_A2_FORCE_MONO1] = "A2_FORCE_MONO1",
  81         [EN_A2_FORCE_MONO2] = "A2_FORCE_MONO2",
  82         [EN_A2_FORCE_STEREO] = "A2_FORCE_STEREO",
  83         [EN_A2_AUTO_MONO2] = "A2_AUTO_MONO2",
  84         [EN_A2_AUTO_STEREO] = "A2_AUTO_STEREO",
  85         [EN_EIAJ_FORCE_MONO1] = "EIAJ_FORCE_MONO1",
  86         [EN_EIAJ_FORCE_MONO2] = "EIAJ_FORCE_MONO2",
  87         [EN_EIAJ_FORCE_STEREO] = "EIAJ_FORCE_STEREO",
  88         [EN_EIAJ_AUTO_MONO2] = "EIAJ_AUTO_MONO2",
  89         [EN_EIAJ_AUTO_STEREO] = "EIAJ_AUTO_STEREO",
  90         [EN_NICAM_FORCE_MONO1] = "NICAM_FORCE_MONO1",
  91         [EN_NICAM_FORCE_MONO2] = "NICAM_FORCE_MONO2",
  92         [EN_NICAM_FORCE_STEREO] = "NICAM_FORCE_STEREO",
  93         [EN_NICAM_AUTO_MONO2] = "NICAM_AUTO_MONO2",
  94         [EN_NICAM_AUTO_STEREO] = "NICAM_AUTO_STEREO",
  95         [EN_FMRADIO_FORCE_MONO] = "FMRADIO_FORCE_MONO",
  96         [EN_FMRADIO_FORCE_STEREO] = "FMRADIO_FORCE_STEREO",
  97         [EN_FMRADIO_AUTO_STEREO] = "FMRADIO_AUTO_STEREO",
  98 };
  99
 100 struct rlist {
 101         u32 reg;
 102         u32 val;
 103 };
 104
 105 static void set_audio_registers(struct cx88_core *core, const struct rlist *l)
 106 {
 107         int i;
 108
 109         for (i = 0; l[i].reg; i++) {
 110                 switch (l[i].reg) {
 111                 case AUD_PDF_DDS_CNST_BYTE2:
 112                 case AUD_PDF_DDS_CNST_BYTE1:
 113                 case AUD_PDF_DDS_CNST_BYTE0:
 114                 case AUD_QAM_MODE:
 115                 case AUD_PHACC_FREQ_8MSB:
 116                 case AUD_PHACC_FREQ_8LSB:
 117                         cx_writeb(l[i].reg, l[i].val);
 118                         break;
 119                 default:
 120                         cx_write(l[i].reg, l[i].val);
 121                         break;
 122                 }
 123         }
 124 }
 125
 126 static void set_audio_start(struct cx88_core *core, u32 mode)
 127 {
 128         /* mute */
 129         cx_write(AUD_VOL_CTL, (1 << 6));
 130
 131         /* start programming */
 132         cx_write(AUD_INIT, mode);
 133         cx_write(AUD_INIT_LD, 0x0001);
 134         cx_write(AUD_SOFT_RESET, 0x0001);
 135 }
 136
 137 static void set_audio_finish(struct cx88_core *core, u32 ctl)
 138 {
 139         u32 volume;
 140
 141         /* restart dma; This avoids buzz in NICAM and is good in others  */
 142         cx88_stop_audio_dma(core);
 143         cx_write(AUD_RATE_THRES_DMD, 0x000000C0);
 144         cx88_start_audio_dma(core);
 145
 146         if (core->board.mpeg & CX88_MPEG_BLACKBIRD) {
 147                 cx_write(AUD_I2SINPUTCNTL, 4);
 148                 cx_write(AUD_BAUDRATE, 1);
 149                 /* 'pass-thru mode': this enables the i2s output to the mpeg encoder */
 150                 cx_set(AUD_CTL, EN_I2SOUT_ENABLE);
 151                 cx_write(AUD_I2SOUTPUTCNTL, 1);
 152                 cx_write(AUD_I2SCNTL, 0);
 153                 /* cx_write(AUD_APB_IN_RATE_ADJ, 0); */
 154         }
 155         if ((always_analog) || (!(core->board.mpeg & CX88_MPEG_BLACKBIRD))) {
 156                 ctl |= EN_DAC_ENABLE;
 157                 cx_write(AUD_CTL, ctl);
 158         }
 159
 160         /* finish programming */
 161         cx_write(AUD_SOFT_RESET, 0x0000);
 162
 163         /* unmute */
 164         volume = cx_sread(SHADOW_AUD_VOL_CTL);
 165         cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
 166 }
 167
 168 /* ----------------------------------------------------------- */
 169
 170 static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap,
 171                                     u32 mode)
 172 {
 173         static const struct rlist btsc[] = {
 174                 {AUD_AFE_12DB_EN, 0x00000001},
 175                 {AUD_OUT1_SEL, 0x00000013},
 176                 {AUD_OUT1_SHIFT, 0x00000000},
 177                 {AUD_POLY0_DDS_CONSTANT, 0x0012010c},
 178                 {AUD_DMD_RA_DDS, 0x00c3e7aa},
 179                 {AUD_DBX_IN_GAIN, 0x00004734},
 180                 {AUD_DBX_WBE_GAIN, 0x00004640},
 181                 {AUD_DBX_SE_GAIN, 0x00008d31},
 182                 {AUD_DCOC_0_SRC, 0x0000001a},
 183                 {AUD_IIR1_4_SEL, 0x00000021},
 184                 {AUD_DCOC_PASS_IN, 0x00000003},
 185                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 186                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 187                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 188                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 189                 {AUD_DN0_FREQ, 0x0000283b},
 190                 {AUD_DN2_SRC_SEL, 0x00000008},
 191                 {AUD_DN2_FREQ, 0x00003000},
 192                 {AUD_DN2_AFC, 0x00000002},
 193                 {AUD_DN2_SHFT, 0x00000000},
 194                 {AUD_IIR2_2_SEL, 0x00000020},
 195                 {AUD_IIR2_2_SHIFT, 0x00000000},
 196                 {AUD_IIR2_3_SEL, 0x0000001f},
 197                 {AUD_IIR2_3_SHIFT, 0x00000000},
 198                 {AUD_CRDC1_SRC_SEL, 0x000003ce},
 199                 {AUD_CRDC1_SHIFT, 0x00000000},
 200                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 201                 {AUD_DCOC_1_SRC, 0x0000001b},
 202                 {AUD_DCOC1_SHIFT, 0x00000000},
 203                 {AUD_RDSI_SEL, 0x00000008},
 204                 {AUD_RDSQ_SEL, 0x00000008},
 205                 {AUD_RDSI_SHIFT, 0x00000000},
 206                 {AUD_RDSQ_SHIFT, 0x00000000},
 207                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 208                 { /* end of list */ },
 209         };
 210         static const struct rlist btsc_sap[] = {
 211                 {AUD_AFE_12DB_EN, 0x00000001},
 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         mode |= EN_FMRADIO_EN_RDS;
 266
 267         if (sap) {
 268                 dprintk("%s SAP (status: unknown)\n", __func__);
 269                 set_audio_start(core, SEL_SAP);
 270                 set_audio_registers(core, btsc_sap);
 271                 set_audio_finish(core, mode);
 272         } else {
 273                 dprintk("%s (status: known-good)\n", __func__);
 274                 set_audio_start(core, SEL_BTSC);
 275                 set_audio_registers(core, btsc);
 276                 set_audio_finish(core, mode);
 277         }
 278 }
 279
 280 static void set_audio_standard_NICAM(struct cx88_core *core, u32 mode)
 281 {
 282         static const struct rlist nicam_l[] = {
 283                 {AUD_AFE_12DB_EN, 0x00000001},
 284                 {AUD_RATE_ADJ1, 0x00000060},
 285                 {AUD_RATE_ADJ2, 0x000000F9},
 286                 {AUD_RATE_ADJ3, 0x000001CC},
 287                 {AUD_RATE_ADJ4, 0x000002B3},
 288                 {AUD_RATE_ADJ5, 0x00000726},
 289                 {AUD_DEEMPHDENOM1_R, 0x0000F3D0},
 290                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 291                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 292                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
 293                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
 294                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
 295                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 296                 {AUD_DMD_RA_DDS, 0x00C00000},
 297                 {AUD_PLL_INT, 0x0000001E},
 298                 {AUD_PLL_DDS, 0x00000000},
 299                 {AUD_PLL_FRAC, 0x0000E542},
 300                 {AUD_START_TIMER, 0x00000000},
 301                 {AUD_DEEMPHNUMER1_R, 0x000353DE},
 302                 {AUD_DEEMPHNUMER2_R, 0x000001B1},
 303                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 304                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 305                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 306                 {AUD_QAM_MODE, 0x05},
 307                 {AUD_PHACC_FREQ_8MSB, 0x34},
 308                 {AUD_PHACC_FREQ_8LSB, 0x4C},
 309                 {AUD_DEEMPHGAIN_R, 0x00006680},
 310                 {AUD_RATE_THRES_DMD, 0x000000C0},
 311                 { /* end of list */ },
 312         };
 313
 314         static const struct rlist nicam_bgdki_common[] = {
 315                 {AUD_AFE_12DB_EN, 0x00000001},
 316                 {AUD_RATE_ADJ1, 0x00000010},
 317                 {AUD_RATE_ADJ2, 0x00000040},
 318                 {AUD_RATE_ADJ3, 0x00000100},
 319                 {AUD_RATE_ADJ4, 0x00000400},
 320                 {AUD_RATE_ADJ5, 0x00001000},
 321                 {AUD_ERRLOGPERIOD_R, 0x00000fff},
 322                 {AUD_ERRINTRPTTHSHLD1_R, 0x000003ff},
 323                 {AUD_ERRINTRPTTHSHLD2_R, 0x000000ff},
 324                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000003f},
 325                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 326                 {AUD_DEEMPHGAIN_R, 0x000023c2},
 327                 {AUD_DEEMPHNUMER1_R, 0x0002a7bc},
 328                 {AUD_DEEMPHNUMER2_R, 0x0003023e},
 329                 {AUD_DEEMPHDENOM1_R, 0x0000f3d0},
 330                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 331                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 332                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 333                 {AUD_QAM_MODE, 0x05},
 334                 { /* end of list */ },
 335         };
 336
 337         static const struct rlist nicam_i[] = {
 338                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 339                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 340                 {AUD_PHACC_FREQ_8LSB, 0x93},
 341                 { /* end of list */ },
 342         };
 343
 344         static const struct rlist nicam_default[] = {
 345                 {AUD_PDF_DDS_CNST_BYTE0, 0x16},
 346                 {AUD_PHACC_FREQ_8MSB, 0x34},
 347                 {AUD_PHACC_FREQ_8LSB, 0x4c},
 348                 { /* end of list */ },
 349         };
 350
 351         set_audio_start(core,SEL_NICAM);
 352         switch (core->tvaudio) {
 353         case WW_L:
 354                 dprintk("%s SECAM-L NICAM (status: devel)\n", __func__);
 355                 set_audio_registers(core, nicam_l);
 356                 break;
 357         case WW_I:
 358                 dprintk("%s PAL-I NICAM (status: known-good)\n", __func__);
 359                 set_audio_registers(core, nicam_bgdki_common);
 360                 set_audio_registers(core, nicam_i);
 361                 break;
 362         default:
 363                 dprintk("%s PAL-BGDK NICAM (status: known-good)\n", __func__);
 364                 set_audio_registers(core, nicam_bgdki_common);
 365                 set_audio_registers(core, nicam_default);
 366                 break;
 367         };
 368
 369         mode |= EN_DMTRX_LR | EN_DMTRX_BYPASS;
 370         set_audio_finish(core, mode);
 371 }
 372
 373 static void set_audio_standard_A2(struct cx88_core *core, u32 mode)
 374 {
 375         static const struct rlist a2_bgdk_common[] = {
 376                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 377                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
 378                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
 379                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
 380                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 381                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 382                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 383                 {AUD_QAM_MODE, 0x05},
 384                 {AUD_PHACC_FREQ_8MSB, 0x34},
 385                 {AUD_PHACC_FREQ_8LSB, 0x4c},
 386                 {AUD_RATE_ADJ1, 0x00000100},
 387                 {AUD_RATE_ADJ2, 0x00000200},
 388                 {AUD_RATE_ADJ3, 0x00000300},
 389                 {AUD_RATE_ADJ4, 0x00000400},
 390                 {AUD_RATE_ADJ5, 0x00000500},
 391                 {AUD_THR_FR, 0x00000000},
 392                 {AAGC_HYST, 0x0000001a},
 393                 {AUD_PILOT_BQD_1_K0, 0x0000755b},
 394                 {AUD_PILOT_BQD_1_K1, 0x00551340},
 395                 {AUD_PILOT_BQD_1_K2, 0x006d30be},
 396                 {AUD_PILOT_BQD_1_K3, 0xffd394af},
 397                 {AUD_PILOT_BQD_1_K4, 0x00400000},
 398                 {AUD_PILOT_BQD_2_K0, 0x00040000},
 399                 {AUD_PILOT_BQD_2_K1, 0x002a4841},
 400                 {AUD_PILOT_BQD_2_K2, 0x00400000},
 401                 {AUD_PILOT_BQD_2_K3, 0x00000000},
 402                 {AUD_PILOT_BQD_2_K4, 0x00000000},
 403                 {AUD_MODE_CHG_TIMER, 0x00000040},
 404                 {AUD_AFE_12DB_EN, 0x00000001},
 405                 {AUD_CORDIC_SHIFT_0, 0x00000007},
 406                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 407                 {AUD_DEEMPH0_G0, 0x00000380},
 408                 {AUD_DEEMPH1_G0, 0x00000380},
 409                 {AUD_DCOC_0_SRC, 0x0000001a},
 410                 {AUD_DCOC0_SHIFT, 0x00000000},
 411                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 412                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 413                 {AUD_DCOC_PASS_IN, 0x00000003},
 414                 {AUD_IIR3_0_SEL, 0x00000021},
 415                 {AUD_DN2_AFC, 0x00000002},
 416                 {AUD_DCOC_1_SRC, 0x0000001b},
 417                 {AUD_DCOC1_SHIFT, 0x00000000},
 418                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 419                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 420                 {AUD_IIR3_1_SEL, 0x00000023},
 421                 {AUD_RDSI_SEL, 0x00000017},
 422                 {AUD_RDSI_SHIFT, 0x00000000},
 423                 {AUD_RDSQ_SEL, 0x00000017},
 424                 {AUD_RDSQ_SHIFT, 0x00000000},
 425                 {AUD_PLL_INT, 0x0000001e},
 426                 {AUD_PLL_DDS, 0x00000000},
 427                 {AUD_PLL_FRAC, 0x0000e542},
 428                 {AUD_POLYPH80SCALEFAC, 0x00000001},
 429                 {AUD_START_TIMER, 0x00000000},
 430                 { /* end of list */ },
 431         };
 432
 433         static const struct rlist a2_bg[] = {
 434                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 435                 {AUD_C1_UP_THR, 0x00007000},
 436                 {AUD_C1_LO_THR, 0x00005400},
 437                 {AUD_C2_UP_THR, 0x00005400},
 438                 {AUD_C2_LO_THR, 0x00003000},
 439                 { /* end of list */ },
 440         };
 441
 442         static const struct rlist a2_dk[] = {
 443                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 444                 {AUD_C1_UP_THR, 0x00007000},
 445                 {AUD_C1_LO_THR, 0x00005400},
 446                 {AUD_C2_UP_THR, 0x00005400},
 447                 {AUD_C2_LO_THR, 0x00003000},
 448                 {AUD_DN0_FREQ, 0x00003a1c},
 449                 {AUD_DN2_FREQ, 0x0000d2e0},
 450                 { /* end of list */ },
 451         };
 452
 453         static const struct rlist a1_i[] = {
 454                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 455                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
 456                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
 457                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
 458                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 459                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 460                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 461                 {AUD_QAM_MODE, 0x05},
 462                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 463                 {AUD_PHACC_FREQ_8LSB, 0x93},
 464                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 465                 {AUD_PLL_INT, 0x0000001e},
 466                 {AUD_PLL_DDS, 0x00000004},
 467                 {AUD_PLL_FRAC, 0x0000e542},
 468                 {AUD_RATE_ADJ1, 0x00000100},
 469                 {AUD_RATE_ADJ2, 0x00000200},
 470                 {AUD_RATE_ADJ3, 0x00000300},
 471                 {AUD_RATE_ADJ4, 0x00000400},
 472                 {AUD_RATE_ADJ5, 0x00000500},
 473                 {AUD_THR_FR, 0x00000000},
 474                 {AUD_PILOT_BQD_1_K0, 0x0000755b},
 475                 {AUD_PILOT_BQD_1_K1, 0x00551340},
 476                 {AUD_PILOT_BQD_1_K2, 0x006d30be},
 477                 {AUD_PILOT_BQD_1_K3, 0xffd394af},
 478                 {AUD_PILOT_BQD_1_K4, 0x00400000},
 479                 {AUD_PILOT_BQD_2_K0, 0x00040000},
 480                 {AUD_PILOT_BQD_2_K1, 0x002a4841},
 481                 {AUD_PILOT_BQD_2_K2, 0x00400000},
 482                 {AUD_PILOT_BQD_2_K3, 0x00000000},
 483                 {AUD_PILOT_BQD_2_K4, 0x00000000},
 484                 {AUD_MODE_CHG_TIMER, 0x00000060},
 485                 {AUD_AFE_12DB_EN, 0x00000001},
 486                 {AAGC_HYST, 0x0000000a},
 487                 {AUD_CORDIC_SHIFT_0, 0x00000007},
 488                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 489                 {AUD_C1_UP_THR, 0x00007000},
 490                 {AUD_C1_LO_THR, 0x00005400},
 491                 {AUD_C2_UP_THR, 0x00005400},
 492                 {AUD_C2_LO_THR, 0x00003000},
 493                 {AUD_DCOC_0_SRC, 0x0000001a},
 494                 {AUD_DCOC0_SHIFT, 0x00000000},
 495                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 496                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 497                 {AUD_DCOC_PASS_IN, 0x00000003},
 498                 {AUD_IIR3_0_SEL, 0x00000021},
 499                 {AUD_DN2_AFC, 0x00000002},
 500                 {AUD_DCOC_1_SRC, 0x0000001b},
 501                 {AUD_DCOC1_SHIFT, 0x00000000},
 502                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 503                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 504                 {AUD_IIR3_1_SEL, 0x00000023},
 505                 {AUD_DN0_FREQ, 0x000035a3},
 506                 {AUD_DN2_FREQ, 0x000029c7},
 507                 {AUD_CRDC0_SRC_SEL, 0x00000511},
 508                 {AUD_IIR1_0_SEL, 0x00000001},
 509                 {AUD_IIR1_1_SEL, 0x00000000},
 510                 {AUD_IIR3_2_SEL, 0x00000003},
 511                 {AUD_IIR3_2_SHIFT, 0x00000000},
 512                 {AUD_IIR3_0_SEL, 0x00000002},
 513                 {AUD_IIR2_0_SEL, 0x00000021},
 514                 {AUD_IIR2_0_SHIFT, 0x00000002},
 515                 {AUD_DEEMPH0_SRC_SEL, 0x0000000b},
 516                 {AUD_DEEMPH1_SRC_SEL, 0x0000000b},
 517                 {AUD_POLYPH80SCALEFAC, 0x00000001},
 518                 {AUD_START_TIMER, 0x00000000},
 519                 { /* end of list */ },
 520         };
 521
 522         static const struct rlist am_l[] = {
 523                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 524                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
 525                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
 526                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
 527                 {AUD_PDF_DDS_CNST_BYTE2, 0x48},
 528                 {AUD_PDF_DDS_CNST_BYTE1, 0x3D},
 529                 {AUD_QAM_MODE, 0x00},
 530                 {AUD_PDF_DDS_CNST_BYTE0, 0xf5},
 531                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 532                 {AUD_PHACC_FREQ_8LSB, 0x4a},
 533                 {AUD_DEEMPHGAIN_R, 0x00006680},
 534                 {AUD_DEEMPHNUMER1_R, 0x000353DE},
 535                 {AUD_DEEMPHNUMER2_R, 0x000001B1},
 536                 {AUD_DEEMPHDENOM1_R, 0x0000F3D0},
 537                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 538                 {AUD_FM_MODE_ENABLE, 0x00000007},
 539                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 540                 {AUD_AFE_12DB_EN, 0x00000001},
 541                 {AAGC_GAIN, 0x00000000},
 542                 {AAGC_HYST, 0x00000018},
 543                 {AAGC_DEF, 0x00000020},
 544                 {AUD_DN0_FREQ, 0x00000000},
 545                 {AUD_POLY0_DDS_CONSTANT, 0x000E4DB2},
 546                 {AUD_DCOC_0_SRC, 0x00000021},
 547                 {AUD_IIR1_0_SEL, 0x00000000},
 548                 {AUD_IIR1_0_SHIFT, 0x00000007},
 549                 {AUD_IIR1_1_SEL, 0x00000002},
 550                 {AUD_IIR1_1_SHIFT, 0x00000000},
 551                 {AUD_DCOC_1_SRC, 0x00000003},
 552                 {AUD_DCOC1_SHIFT, 0x00000000},
 553                 {AUD_DCOC_PASS_IN, 0x00000000},
 554                 {AUD_IIR1_2_SEL, 0x00000023},
 555                 {AUD_IIR1_2_SHIFT, 0x00000000},
 556                 {AUD_IIR1_3_SEL, 0x00000004},
 557                 {AUD_IIR1_3_SHIFT, 0x00000007},
 558                 {AUD_IIR1_4_SEL, 0x00000005},
 559                 {AUD_IIR1_4_SHIFT, 0x00000007},
 560                 {AUD_IIR3_0_SEL, 0x00000007},
 561                 {AUD_IIR3_0_SHIFT, 0x00000000},
 562                 {AUD_DEEMPH0_SRC_SEL, 0x00000011},
 563                 {AUD_DEEMPH0_SHIFT, 0x00000000},
 564                 {AUD_DEEMPH0_G0, 0x00007000},
 565                 {AUD_DEEMPH0_A0, 0x00000000},
 566                 {AUD_DEEMPH0_B0, 0x00000000},
 567                 {AUD_DEEMPH0_A1, 0x00000000},
 568                 {AUD_DEEMPH0_B1, 0x00000000},
 569                 {AUD_DEEMPH1_SRC_SEL, 0x00000011},
 570                 {AUD_DEEMPH1_SHIFT, 0x00000000},
 571                 {AUD_DEEMPH1_G0, 0x00007000},
 572                 {AUD_DEEMPH1_A0, 0x00000000},
 573                 {AUD_DEEMPH1_B0, 0x00000000},
 574                 {AUD_DEEMPH1_A1, 0x00000000},
 575                 {AUD_DEEMPH1_B1, 0x00000000},
 576                 {AUD_OUT0_SEL, 0x0000003F},
 577                 {AUD_OUT1_SEL, 0x0000003F},
 578                 {AUD_DMD_RA_DDS, 0x00F5C285},
 579                 {AUD_PLL_INT, 0x0000001E},
 580                 {AUD_PLL_DDS, 0x00000000},
 581                 {AUD_PLL_FRAC, 0x0000E542},
 582                 {AUD_RATE_ADJ1, 0x00000100},
 583                 {AUD_RATE_ADJ2, 0x00000200},
 584                 {AUD_RATE_ADJ3, 0x00000300},
 585                 {AUD_RATE_ADJ4, 0x00000400},
 586                 {AUD_RATE_ADJ5, 0x00000500},
 587                 {AUD_RATE_THRES_DMD, 0x000000C0},
 588                 { /* end of list */ },
 589         };
 590
 591         static const struct rlist a2_deemph50[] = {
 592                 {AUD_DEEMPH0_G0, 0x00000380},
 593                 {AUD_DEEMPH1_G0, 0x00000380},
 594                 {AUD_DEEMPHGAIN_R, 0x000011e1},
 595                 {AUD_DEEMPHNUMER1_R, 0x0002a7bc},
 596                 {AUD_DEEMPHNUMER2_R, 0x0003023c},
 597                 { /* end of list */ },
 598         };
 599
 600         set_audio_start(core, SEL_A2);
 601         switch (core->tvaudio) {
 602         case WW_BG:
 603                 dprintk("%s PAL-BG A1/2 (status: known-good)\n", __func__);
 604                 set_audio_registers(core, a2_bgdk_common);
 605                 set_audio_registers(core, a2_bg);
 606                 set_audio_registers(core, a2_deemph50);
 607                 break;
 608         case WW_DK:
 609                 dprintk("%s PAL-DK A1/2 (status: known-good)\n", __func__);
 610                 set_audio_registers(core, a2_bgdk_common);
 611                 set_audio_registers(core, a2_dk);
 612                 set_audio_registers(core, a2_deemph50);
 613                 break;
 614         case WW_I:
 615                 dprintk("%s PAL-I A1 (status: known-good)\n", __func__);
 616                 set_audio_registers(core, a1_i);
 617                 set_audio_registers(core, a2_deemph50);
 618                 break;
 619         case WW_L:
 620                 dprintk("%s AM-L (status: devel)\n", __func__);
 621                 set_audio_registers(core, am_l);
 622                 break;
 623         default:
 624                 dprintk("%s Warning: wrong value\n", __func__);
 625                 return;
 626                 break;
 627         };
 628
 629         mode |= EN_FMRADIO_EN_RDS | EN_DMTRX_SUMDIFF;
 630         set_audio_finish(core, mode);
 631 }
 632
 633 static void set_audio_standard_EIAJ(struct cx88_core *core)
 634 {
 635         static const struct rlist eiaj[] = {
 636                 /* TODO: eiaj register settings are not there yet ... */
 637
 638                 { /* end of list */ },
 639         };
 640         dprintk("%s (status: unknown)\n", __func__);
 641
 642         set_audio_start(core, SEL_EIAJ);
 643         set_audio_registers(core, eiaj);
 644         set_audio_finish(core, EN_EIAJ_AUTO_STEREO);
 645 }
 646
 647 static void set_audio_standard_FM(struct cx88_core *core,
 648                                   enum cx88_deemph_type deemph)
 649 {
 650         static const struct rlist fm_deemph_50[] = {
 651                 {AUD_DEEMPH0_G0, 0x0C45},
 652                 {AUD_DEEMPH0_A0, 0x6262},
 653                 {AUD_DEEMPH0_B0, 0x1C29},
 654                 {AUD_DEEMPH0_A1, 0x3FC66},
 655                 {AUD_DEEMPH0_B1, 0x399A},
 656
 657                 {AUD_DEEMPH1_G0, 0x0D80},
 658                 {AUD_DEEMPH1_A0, 0x6262},
 659                 {AUD_DEEMPH1_B0, 0x1C29},
 660                 {AUD_DEEMPH1_A1, 0x3FC66},
 661                 {AUD_DEEMPH1_B1, 0x399A},
 662
 663                 {AUD_POLYPH80SCALEFAC, 0x0003},
 664                 { /* end of list */ },
 665         };
 666         static const struct rlist fm_deemph_75[] = {
 667                 {AUD_DEEMPH0_G0, 0x091B},
 668                 {AUD_DEEMPH0_A0, 0x6B68},
 669                 {AUD_DEEMPH0_B0, 0x11EC},
 670                 {AUD_DEEMPH0_A1, 0x3FC66},
 671                 {AUD_DEEMPH0_B1, 0x399A},
 672
 673                 {AUD_DEEMPH1_G0, 0x0AA0},
 674                 {AUD_DEEMPH1_A0, 0x6B68},
 675                 {AUD_DEEMPH1_B0, 0x11EC},
 676                 {AUD_DEEMPH1_A1, 0x3FC66},
 677                 {AUD_DEEMPH1_B1, 0x399A},
 678
 679                 {AUD_POLYPH80SCALEFAC, 0x0003},
 680                 { /* end of list */ },
 681         };
 682
 683         /* It is enough to leave default values? */
 684         /* No, it's not!  The deemphasis registers are reset to the 75us
 685          * values by default.  Analyzing the spectrum of the decoded audio
 686          * reveals that "no deemphasis" is the same as 75 us, while the 50 us
 687          * setting results in less deemphasis.  */
 688         static const struct rlist fm_no_deemph[] = {
 689
 690                 {AUD_POLYPH80SCALEFAC, 0x0003},
 691                 { /* end of list */ },
 692         };
 693
 694         dprintk("%s (status: unknown)\n", __func__);
 695         set_audio_start(core, SEL_FMRADIO);
 696
 697         switch (deemph) {
 698         default:
 699         case FM_NO_DEEMPH:
 700                 set_audio_registers(core, fm_no_deemph);
 701                 break;
 702
 703         case FM_DEEMPH_50:
 704                 set_audio_registers(core, fm_deemph_50);
 705                 break;
 706
 707         case FM_DEEMPH_75:
 708                 set_audio_registers(core, fm_deemph_75);
 709                 break;
 710         }
 711
 712         set_audio_finish(core, EN_FMRADIO_AUTO_STEREO);
 713 }
 714
 715 /* ----------------------------------------------------------- */
 716
 717 static int cx88_detect_nicam(struct cx88_core *core)
 718 {
 719         int i, j = 0;
 720
 721         dprintk("start nicam autodetect.\n");
 722
 723         for (i = 0; i < 6; i++) {
 724                 /* if bit1=1 then nicam is detected */
 725                 j += ((cx_read(AUD_NICAM_STATUS2) & 0x02) >> 1);
 726
 727                 if (j == 1) {
 728                         dprintk("nicam is detected.\n");
 729                         return 1;
 730                 }
 731
 732                 /* wait a little bit for next reading status */
 733                 msleep(10);
 734         }
 735
 736         dprintk("nicam is not detected.\n");
 737         return 0;
 738 }
 739
 740 void cx88_set_tvaudio(struct cx88_core *core)
 741 {
 742         switch (core->tvaudio) {
 743         case WW_BTSC:
 744                 set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
 745                 break;
 746         case WW_BG:
 747         case WW_DK:
 748         case WW_I:
 749         case WW_L:
 750                 /* prepare all dsp registers */
 751                 set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 752
 753                 /* set nicam mode - otherwise
 754                    AUD_NICAM_STATUS2 contains wrong values */
 755                 set_audio_standard_NICAM(core, EN_NICAM_AUTO_STEREO);
 756                 if (0 == cx88_detect_nicam(core)) {
 757                         /* fall back to fm / am mono */
 758                         set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 759                         core->use_nicam = 0;
 760                 } else {
 761                         core->use_nicam = 1;
 762                 }
 763                 break;
 764         case WW_EIAJ:
 765                 set_audio_standard_EIAJ(core);
 766                 break;
 767         case WW_FM:
 768                 set_audio_standard_FM(core, radio_deemphasis);
 769                 break;
 770         case WW_I2SADC:
 771                 set_audio_start(core, 0x01);
 772                 /* Slave/Philips/Autobaud */
 773                 cx_write(AUD_I2SINPUTCNTL, 0);
 774                 /* Switch to "I2S ADC mode" */
 775                 cx_write(AUD_I2SCNTL, 0x1);
 776                 set_audio_finish(core, EN_I2SIN_ENABLE);
 777                 break;
 778         case WW_NONE:
 779         default:
 780                 printk("%s/0: unknown tv audio mode [%d]\n",
 781                        core->name, core->tvaudio);
 782                 break;
 783         }
 784         return;
 785 }
 786
 787 void cx88_newstation(struct cx88_core *core)
 788 {
 789         core->audiomode_manual = UNSET;
 790 }
 791
 792 void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 793 {
 794         static char *m[] = { "stereo", "dual mono", "mono", "sap" };
 795         static char *p[] = { "no pilot", "pilot c1", "pilot c2", "?" };
 796         u32 reg, mode, pilot;
 797
 798         reg = cx_read(AUD_STATUS);
 799         mode = reg & 0x03;
 800         pilot = (reg >> 2) & 0x03;
 801
 802         if (core->astat != reg)
 803                 dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
 804                         reg, m[mode], p[pilot],
 805                         aud_ctl_names[cx_read(AUD_CTL) & 63]);
 806         core->astat = reg;
 807
 808 /* TODO
 809         Reading from AUD_STATUS is not enough
 810         for auto-detecting sap/dual-fm/nicam.
 811         Add some code here later.
 812 */
 813
 814         return;
 815 }
 816
 817 void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 818 {
 819         u32 ctl = UNSET;
 820         u32 mask = UNSET;
 821
 822         if (manual) {
 823                 core->audiomode_manual = mode;
 824         } else {
 825                 if (UNSET != core->audiomode_manual)
 826                         return;
 827         }
 828         core->audiomode_current = mode;
 829
 830         switch (core->tvaudio) {
 831         case WW_BTSC:
 832                 switch (mode) {
 833                 case V4L2_TUNER_MODE_MONO:
 834                         set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_MONO);
 835                         break;
 836                 case V4L2_TUNER_MODE_LANG1:
 837                         set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
 838                         break;
 839                 case V4L2_TUNER_MODE_LANG2:
 840                         set_audio_standard_BTSC(core, 1, EN_BTSC_FORCE_SAP);
 841                         break;
 842                 case V4L2_TUNER_MODE_STEREO:
 843                 case V4L2_TUNER_MODE_LANG1_LANG2:
 844                         set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_STEREO);
 845                         break;
 846                 }
 847                 break;
 848         case WW_BG:
 849         case WW_DK:
 850         case WW_I:
 851         case WW_L:
 852                 if (1 == core->use_nicam) {
 853                         switch (mode) {
 854                         case V4L2_TUNER_MODE_MONO:
 855                         case V4L2_TUNER_MODE_LANG1:
 856                                 set_audio_standard_NICAM(core,
 857                                                          EN_NICAM_FORCE_MONO1);
 858                                 break;
 859                         case V4L2_TUNER_MODE_LANG2:
 860                                 set_audio_standard_NICAM(core,
 861                                                          EN_NICAM_FORCE_MONO2);
 862                                 break;
 863                         case V4L2_TUNER_MODE_STEREO:
 864                         case V4L2_TUNER_MODE_LANG1_LANG2:
 865                                 set_audio_standard_NICAM(core,
 866                                                          EN_NICAM_FORCE_STEREO);
 867                                 break;
 868                         }
 869                 } else {
 870                         if ((core->tvaudio == WW_I) || (core->tvaudio == WW_L)) {
 871                                 /* fall back to fm / am mono */
 872                                 set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 873                         } else {
 874                                 /* TODO: Add A2 autodection */
 875                                 switch (mode) {
 876                                 case V4L2_TUNER_MODE_MONO:
 877                                 case V4L2_TUNER_MODE_LANG1:
 878                                         set_audio_standard_A2(core,
 879                                                               EN_A2_FORCE_MONO1);
 880                                         break;
 881                                 case V4L2_TUNER_MODE_LANG2:
 882                                         set_audio_standard_A2(core,
 883                                                               EN_A2_FORCE_MONO2);
 884                                         break;
 885                                 case V4L2_TUNER_MODE_STEREO:
 886                                 case V4L2_TUNER_MODE_LANG1_LANG2:
 887                                         set_audio_standard_A2(core,
 888                                                               EN_A2_FORCE_STEREO);
 889                                         break;
 890                                 }
 891                         }
 892                 }
 893                 break;
 894         case WW_FM:
 895                 switch (mode) {
 896                 case V4L2_TUNER_MODE_MONO:
 897                         ctl = EN_FMRADIO_FORCE_MONO;
 898                         mask = 0x3f;
 899                         break;
 900                 case V4L2_TUNER_MODE_STEREO:
 901                         ctl = EN_FMRADIO_AUTO_STEREO;
 902                         mask = 0x3f;
 903                         break;
 904                 }
 905                 break;
 906         case WW_I2SADC:
 907                 /* DO NOTHING */
 908                 break;
 909         }
 910
 911         if (UNSET != ctl) {
 912                 dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
 913                         "[status=0x%x,ctl=0x%x,vol=0x%x]\n",
 914                         mask, ctl, cx_read(AUD_STATUS),
 915                         cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
 916                 cx_andor(AUD_CTL, mask, ctl);
 917         }
 918         return;
 919 }
 920
 921 int cx88_audio_thread(void *data)
 922 {
 923         struct cx88_core *core = data;
 924         struct v4l2_tuner t;
 925         u32 mode = 0;
 926
 927         dprintk("cx88: tvaudio thread started\n");
 928         set_freezable();
 929         for (;;) {
 930                 msleep_interruptible(1000);
 931                 if (kthread_should_stop())
 932                         break;
 933                 try_to_freeze();
 934
 935                 /* just monitor the audio status for now ... */
 936                 memset(&t, 0, sizeof(t));
 937                 cx88_get_stereo(core, &t);
 938
 939                 if (UNSET != core->audiomode_manual)
 940                         /* manually set, don't do anything. */
 941                         continue;
 942
 943                 /* monitor signal */
 944                 if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
 945                         mode = V4L2_TUNER_MODE_STEREO;
 946                 else
 947                         mode = V4L2_TUNER_MODE_MONO;
 948                 if (mode == core->audiomode_current)
 949                         continue;
 950
 951                 /* automatically switch to best available mode */
 952                 cx88_set_stereo(core, mode, 0);
 953         }
 954
 955         dprintk("cx88: tvaudio thread exiting\n");
 956         return 0;
 957 }
 958
 959 /* ----------------------------------------------------------- */
 960
 961 EXPORT_SYMBOL(cx88_set_tvaudio);
 962 EXPORT_SYMBOL(cx88_newstation);
 963 EXPORT_SYMBOL(cx88_set_stereo);
 964 EXPORT_SYMBOL(cx88_get_stereo);
 965 EXPORT_SYMBOL(cx88_audio_thread);
 966
 967 /*
 968  * Local variables:
 969  * c-basic-offset: 8
 970  * End:
 971  * 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
 972  */