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/moduleparam.h>
  40 #include <linux/errno.h>
  41 #include <linux/kernel.h>
  42 #include <linux/slab.h>
  43 #include <linux/mm.h>
  44 #include <linux/poll.h>
  45 #include <linux/pci.h>
  46 #include <linux/signal.h>
  47 #include <linux/ioport.h>
  48 #include <linux/sched.h>
  49 #include <linux/types.h>
  50 #include <linux/interrupt.h>
  51 #include <linux/vmalloc.h>
  52 #include <linux/init.h>
  53 #include <linux/smp_lock.h>
  54 #include <linux/delay.h>
  55 #include <linux/kthread.h>
  56
  57 #include "cx88.h"
  58
  59 static unsigned int audio_debug = 0;
  60 module_param(audio_debug, int, 0644);
  61 MODULE_PARM_DESC(audio_debug, "enable debug messages [audio]");
  62
  63 static unsigned int always_analog = 0;
  64 module_param(always_analog,int,0644);
  65 MODULE_PARM_DESC(always_analog,"force analog audio out");
  66
  67
  68 #define dprintk(fmt, arg...)    if (audio_debug) \
  69         printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
  70
  71 /* ----------------------------------------------------------- */
  72
  73 static char *aud_ctl_names[64] = {
  74         [EN_BTSC_FORCE_MONO] = "BTSC_FORCE_MONO",
  75         [EN_BTSC_FORCE_STEREO] = "BTSC_FORCE_STEREO",
  76         [EN_BTSC_FORCE_SAP] = "BTSC_FORCE_SAP",
  77         [EN_BTSC_AUTO_STEREO] = "BTSC_AUTO_STEREO",
  78         [EN_BTSC_AUTO_SAP] = "BTSC_AUTO_SAP",
  79         [EN_A2_FORCE_MONO1] = "A2_FORCE_MONO1",
  80         [EN_A2_FORCE_MONO2] = "A2_FORCE_MONO2",
  81         [EN_A2_FORCE_STEREO] = "A2_FORCE_STEREO",
  82         [EN_A2_AUTO_MONO2] = "A2_AUTO_MONO2",
  83         [EN_A2_AUTO_STEREO] = "A2_AUTO_STEREO",
  84         [EN_EIAJ_FORCE_MONO1] = "EIAJ_FORCE_MONO1",
  85         [EN_EIAJ_FORCE_MONO2] = "EIAJ_FORCE_MONO2",
  86         [EN_EIAJ_FORCE_STEREO] = "EIAJ_FORCE_STEREO",
  87         [EN_EIAJ_AUTO_MONO2] = "EIAJ_AUTO_MONO2",
  88         [EN_EIAJ_AUTO_STEREO] = "EIAJ_AUTO_STEREO",
  89         [EN_NICAM_FORCE_MONO1] = "NICAM_FORCE_MONO1",
  90         [EN_NICAM_FORCE_MONO2] = "NICAM_FORCE_MONO2",
  91         [EN_NICAM_FORCE_STEREO] = "NICAM_FORCE_STEREO",
  92         [EN_NICAM_AUTO_MONO2] = "NICAM_AUTO_MONO2",
  93         [EN_NICAM_AUTO_STEREO] = "NICAM_AUTO_STEREO",
  94         [EN_FMRADIO_FORCE_MONO] = "FMRADIO_FORCE_MONO",
  95         [EN_FMRADIO_FORCE_STEREO] = "FMRADIO_FORCE_STEREO",
  96         [EN_FMRADIO_AUTO_STEREO] = "FMRADIO_AUTO_STEREO",
  97 };
  98
  99 struct rlist {
 100         u32 reg;
 101         u32 val;
 102 };
 103
 104 static void set_audio_registers(struct cx88_core *core, const struct rlist *l)
 105 {
 106         int i;
 107
 108         for (i = 0; l[i].reg; i++) {
 109                 switch (l[i].reg) {
 110                 case AUD_PDF_DDS_CNST_BYTE2:
 111                 case AUD_PDF_DDS_CNST_BYTE1:
 112                 case AUD_PDF_DDS_CNST_BYTE0:
 113                 case AUD_QAM_MODE:
 114                 case AUD_PHACC_FREQ_8MSB:
 115                 case AUD_PHACC_FREQ_8LSB:
 116                         cx_writeb(l[i].reg, l[i].val);
 117                         break;
 118                 default:
 119                         cx_write(l[i].reg, l[i].val);
 120                         break;
 121                 }
 122         }
 123 }
 124
 125 static void set_audio_start(struct cx88_core *core, u32 mode)
 126 {
 127         /* mute */
 128         cx_write(AUD_VOL_CTL, (1 << 6));
 129
 130         /* start programming */
 131         cx_write(AUD_INIT, mode);
 132         cx_write(AUD_INIT_LD, 0x0001);
 133         cx_write(AUD_SOFT_RESET, 0x0001);
 134 }
 135
 136 static void set_audio_finish(struct cx88_core *core, u32 ctl)
 137 {
 138         u32 volume;
 139
 140 #ifndef USING_CX88_ALSA
 141         /* restart dma; This avoids buzz in NICAM and is good in others  */
 142         cx88_stop_audio_dma(core);
 143 #endif
 144         cx_write(AUD_RATE_THRES_DMD, 0x000000C0);
 145 #ifndef USING_CX88_ALSA
 146         cx88_start_audio_dma(core);
 147 #endif
 148
 149         if (cx88_boards[core->board].blackbird) {
 150                 /* sets sound input from external adc */
 151                 switch (core->board) {
 152                 case CX88_BOARD_HAUPPAUGE_ROSLYN:
 153                 case CX88_BOARD_KWORLD_MCE200_DELUXE:
 154                 case CX88_BOARD_KWORLD_HARDWARE_MPEG_TV_XPERT:
 155                 case CX88_BOARD_PIXELVIEW_PLAYTV_P7000:
 156                         cx_clear(AUD_CTL, EN_I2SIN_ENABLE);
 157                         break;
 158                 default:
 159                         cx_set(AUD_CTL, EN_I2SIN_ENABLE);
 160                 }
 161
 162                 cx_write(AUD_I2SINPUTCNTL, 4);
 163                 cx_write(AUD_BAUDRATE, 1);
 164                 /* 'pass-thru mode': this enables the i2s output to the mpeg encoder */
 165                 cx_set(AUD_CTL, EN_I2SOUT_ENABLE);
 166                 cx_write(AUD_I2SOUTPUTCNTL, 1);
 167                 cx_write(AUD_I2SCNTL, 0);
 168                 /* cx_write(AUD_APB_IN_RATE_ADJ, 0); */
 169         }
 170         if ((always_analog) || (!cx88_boards[core->board].blackbird)) {
 171                 ctl |= EN_DAC_ENABLE;
 172                 cx_write(AUD_CTL, ctl);
 173         }
 174
 175         /* finish programming */
 176         cx_write(AUD_SOFT_RESET, 0x0000);
 177
 178         /* unmute */
 179         volume = cx_sread(SHADOW_AUD_VOL_CTL);
 180         cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
 181 }
 182
 183 /* ----------------------------------------------------------- */
 184
 185 static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap,
 186                                     u32 mode)
 187 {
 188         static const struct rlist btsc[] = {
 189                 {AUD_AFE_12DB_EN, 0x00000001},
 190                 {AUD_OUT1_SEL, 0x00000013},
 191                 {AUD_OUT1_SHIFT, 0x00000000},
 192                 {AUD_POLY0_DDS_CONSTANT, 0x0012010c},
 193                 {AUD_DMD_RA_DDS, 0x00c3e7aa},
 194                 {AUD_DBX_IN_GAIN, 0x00004734},
 195                 {AUD_DBX_WBE_GAIN, 0x00004640},
 196                 {AUD_DBX_SE_GAIN, 0x00008d31},
 197                 {AUD_DCOC_0_SRC, 0x0000001a},
 198                 {AUD_IIR1_4_SEL, 0x00000021},
 199                 {AUD_DCOC_PASS_IN, 0x00000003},
 200                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 201                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 202                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 203                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 204                 {AUD_DN0_FREQ, 0x0000283b},
 205                 {AUD_DN2_SRC_SEL, 0x00000008},
 206                 {AUD_DN2_FREQ, 0x00003000},
 207                 {AUD_DN2_AFC, 0x00000002},
 208                 {AUD_DN2_SHFT, 0x00000000},
 209                 {AUD_IIR2_2_SEL, 0x00000020},
 210                 {AUD_IIR2_2_SHIFT, 0x00000000},
 211                 {AUD_IIR2_3_SEL, 0x0000001f},
 212                 {AUD_IIR2_3_SHIFT, 0x00000000},
 213                 {AUD_CRDC1_SRC_SEL, 0x000003ce},
 214                 {AUD_CRDC1_SHIFT, 0x00000000},
 215                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 216                 {AUD_DCOC_1_SRC, 0x0000001b},
 217                 {AUD_DCOC1_SHIFT, 0x00000000},
 218                 {AUD_RDSI_SEL, 0x00000008},
 219                 {AUD_RDSQ_SEL, 0x00000008},
 220                 {AUD_RDSI_SHIFT, 0x00000000},
 221                 {AUD_RDSQ_SHIFT, 0x00000000},
 222                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 223                 { /* end of list */ },
 224         };
 225         static const struct rlist btsc_sap[] = {
 226                 {AUD_AFE_12DB_EN, 0x00000001},
 227                 {AUD_DBX_IN_GAIN, 0x00007200},
 228                 {AUD_DBX_WBE_GAIN, 0x00006200},
 229                 {AUD_DBX_SE_GAIN, 0x00006200},
 230                 {AUD_IIR1_1_SEL, 0x00000000},
 231                 {AUD_IIR1_3_SEL, 0x00000001},
 232                 {AUD_DN1_SRC_SEL, 0x00000007},
 233                 {AUD_IIR1_4_SHIFT, 0x00000006},
 234                 {AUD_IIR2_1_SHIFT, 0x00000000},
 235                 {AUD_IIR2_2_SHIFT, 0x00000000},
 236                 {AUD_IIR3_0_SHIFT, 0x00000000},
 237                 {AUD_IIR3_1_SHIFT, 0x00000000},
 238                 {AUD_IIR3_0_SEL, 0x0000000d},
 239                 {AUD_IIR3_1_SEL, 0x0000000e},
 240                 {AUD_DEEMPH1_SRC_SEL, 0x00000014},
 241                 {AUD_DEEMPH1_SHIFT, 0x00000000},
 242                 {AUD_DEEMPH1_G0, 0x00004000},
 243                 {AUD_DEEMPH1_A0, 0x00000000},
 244                 {AUD_DEEMPH1_B0, 0x00000000},
 245                 {AUD_DEEMPH1_A1, 0x00000000},
 246                 {AUD_DEEMPH1_B1, 0x00000000},
 247                 {AUD_OUT0_SEL, 0x0000003f},
 248                 {AUD_OUT1_SEL, 0x0000003f},
 249                 {AUD_DN1_AFC, 0x00000002},
 250                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 251                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 252                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 253                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 254                 {AUD_IIR1_0_SEL, 0x0000001d},
 255                 {AUD_IIR1_2_SEL, 0x0000001e},
 256                 {AUD_IIR2_1_SEL, 0x00000002},
 257                 {AUD_IIR2_2_SEL, 0x00000004},
 258                 {AUD_IIR3_2_SEL, 0x0000000f},
 259                 {AUD_DCOC2_SHIFT, 0x00000001},
 260                 {AUD_IIR3_2_SHIFT, 0x00000001},
 261                 {AUD_DEEMPH0_SRC_SEL, 0x00000014},
 262                 {AUD_CORDIC_SHIFT_1, 0x00000006},
 263                 {AUD_POLY0_DDS_CONSTANT, 0x000e4db2},
 264                 {AUD_DMD_RA_DDS, 0x00f696e6},
 265                 {AUD_IIR2_3_SEL, 0x00000025},
 266                 {AUD_IIR1_4_SEL, 0x00000021},
 267                 {AUD_DN1_FREQ, 0x0000c965},
 268                 {AUD_DCOC_PASS_IN, 0x00000003},
 269                 {AUD_DCOC_0_SRC, 0x0000001a},
 270                 {AUD_DCOC_1_SRC, 0x0000001b},
 271                 {AUD_DCOC1_SHIFT, 0x00000000},
 272                 {AUD_RDSI_SEL, 0x00000009},
 273                 {AUD_RDSQ_SEL, 0x00000009},
 274                 {AUD_RDSI_SHIFT, 0x00000000},
 275                 {AUD_RDSQ_SHIFT, 0x00000000},
 276                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 277                 { /* end of list */ },
 278         };
 279
 280         mode |= EN_FMRADIO_EN_RDS;
 281
 282         if (sap) {
 283                 dprintk("%s SAP (status: unknown)\n", __FUNCTION__);
 284                 set_audio_start(core, SEL_SAP);
 285                 set_audio_registers(core, btsc_sap);
 286                 set_audio_finish(core, mode);
 287         } else {
 288                 dprintk("%s (status: known-good)\n", __FUNCTION__);
 289                 set_audio_start(core, SEL_BTSC);
 290                 set_audio_registers(core, btsc);
 291                 set_audio_finish(core, mode);
 292         }
 293 }
 294
 295 static void set_audio_standard_NICAM(struct cx88_core *core, u32 mode)
 296 {
 297         static const struct rlist nicam_l[] = {
 298                 {AUD_AFE_12DB_EN, 0x00000001},
 299                 {AUD_RATE_ADJ1, 0x00000060},
 300                 {AUD_RATE_ADJ2, 0x000000F9},
 301                 {AUD_RATE_ADJ3, 0x000001CC},
 302                 {AUD_RATE_ADJ4, 0x000002B3},
 303                 {AUD_RATE_ADJ5, 0x00000726},
 304                 {AUD_DEEMPHDENOM1_R, 0x0000F3D0},
 305                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 306                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 307                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
 308                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
 309                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
 310                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 311                 {AUD_DMD_RA_DDS, 0x00C00000},
 312                 {AUD_PLL_INT, 0x0000001E},
 313                 {AUD_PLL_DDS, 0x00000000},
 314                 {AUD_PLL_FRAC, 0x0000E542},
 315                 {AUD_START_TIMER, 0x00000000},
 316                 {AUD_DEEMPHNUMER1_R, 0x000353DE},
 317                 {AUD_DEEMPHNUMER2_R, 0x000001B1},
 318                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 319                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 320                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 321                 {AUD_QAM_MODE, 0x05},
 322                 {AUD_PHACC_FREQ_8MSB, 0x34},
 323                 {AUD_PHACC_FREQ_8LSB, 0x4C},
 324                 {AUD_DEEMPHGAIN_R, 0x00006680},
 325                 {AUD_RATE_THRES_DMD, 0x000000C0},
 326                 { /* end of list */ },
 327         };
 328
 329         static const struct rlist nicam_bgdki_common[] = {
 330                 {AUD_AFE_12DB_EN, 0x00000001},
 331                 {AUD_RATE_ADJ1, 0x00000010},
 332                 {AUD_RATE_ADJ2, 0x00000040},
 333                 {AUD_RATE_ADJ3, 0x00000100},
 334                 {AUD_RATE_ADJ4, 0x00000400},
 335                 {AUD_RATE_ADJ5, 0x00001000},
 336                 {AUD_ERRLOGPERIOD_R, 0x00000fff},
 337                 {AUD_ERRINTRPTTHSHLD1_R, 0x000003ff},
 338                 {AUD_ERRINTRPTTHSHLD2_R, 0x000000ff},
 339                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000003f},
 340                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 341                 {AUD_DEEMPHGAIN_R, 0x000023c2},
 342                 {AUD_DEEMPHNUMER1_R, 0x0002a7bc},
 343                 {AUD_DEEMPHNUMER2_R, 0x0003023e},
 344                 {AUD_DEEMPHDENOM1_R, 0x0000f3d0},
 345                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 346                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 347                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 348                 {AUD_QAM_MODE, 0x05},
 349                 { /* end of list */ },
 350         };
 351
 352         static const struct rlist nicam_i[] = {
 353                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 354                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 355                 {AUD_PHACC_FREQ_8LSB, 0x93},
 356                 { /* end of list */ },
 357         };
 358
 359         static const struct rlist nicam_default[] = {
 360                 {AUD_PDF_DDS_CNST_BYTE0, 0x16},
 361                 {AUD_PHACC_FREQ_8MSB, 0x34},
 362                 {AUD_PHACC_FREQ_8LSB, 0x4c},
 363                 { /* end of list */ },
 364         };
 365
 366         set_audio_start(core,SEL_NICAM);
 367         switch (core->tvaudio) {
 368         case WW_L:
 369                 dprintk("%s SECAM-L NICAM (status: devel)\n", __FUNCTION__);
 370                 set_audio_registers(core, nicam_l);
 371                 break;
 372         case WW_I:
 373                 dprintk("%s PAL-I NICAM (status: known-good)\n", __FUNCTION__);
 374                 set_audio_registers(core, nicam_bgdki_common);
 375                 set_audio_registers(core, nicam_i);
 376                 break;
 377         default:
 378                 dprintk("%s PAL-BGDK NICAM (status: known-good)\n", __FUNCTION__);
 379                 set_audio_registers(core, nicam_bgdki_common);
 380                 set_audio_registers(core, nicam_default);
 381                 break;
 382         };
 383
 384         mode |= EN_DMTRX_LR | EN_DMTRX_BYPASS;
 385         set_audio_finish(core, mode);
 386 }
 387
 388 static void set_audio_standard_A2(struct cx88_core *core, u32 mode)
 389 {
 390         static const struct rlist a2_bgdk_common[] = {
 391                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 392                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
 393                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
 394                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
 395                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 396                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 397                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 398                 {AUD_QAM_MODE, 0x05},
 399                 {AUD_PHACC_FREQ_8MSB, 0x34},
 400                 {AUD_PHACC_FREQ_8LSB, 0x4c},
 401                 {AUD_RATE_ADJ1, 0x00000100},
 402                 {AUD_RATE_ADJ2, 0x00000200},
 403                 {AUD_RATE_ADJ3, 0x00000300},
 404                 {AUD_RATE_ADJ4, 0x00000400},
 405                 {AUD_RATE_ADJ5, 0x00000500},
 406                 {AUD_THR_FR, 0x00000000},
 407                 {AAGC_HYST, 0x0000001a},
 408                 {AUD_PILOT_BQD_1_K0, 0x0000755b},
 409                 {AUD_PILOT_BQD_1_K1, 0x00551340},
 410                 {AUD_PILOT_BQD_1_K2, 0x006d30be},
 411                 {AUD_PILOT_BQD_1_K3, 0xffd394af},
 412                 {AUD_PILOT_BQD_1_K4, 0x00400000},
 413                 {AUD_PILOT_BQD_2_K0, 0x00040000},
 414                 {AUD_PILOT_BQD_2_K1, 0x002a4841},
 415                 {AUD_PILOT_BQD_2_K2, 0x00400000},
 416                 {AUD_PILOT_BQD_2_K3, 0x00000000},
 417                 {AUD_PILOT_BQD_2_K4, 0x00000000},
 418                 {AUD_MODE_CHG_TIMER, 0x00000040},
 419                 {AUD_AFE_12DB_EN, 0x00000001},
 420                 {AUD_CORDIC_SHIFT_0, 0x00000007},
 421                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 422                 {AUD_DEEMPH0_G0, 0x00000380},
 423                 {AUD_DEEMPH1_G0, 0x00000380},
 424                 {AUD_DCOC_0_SRC, 0x0000001a},
 425                 {AUD_DCOC0_SHIFT, 0x00000000},
 426                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 427                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 428                 {AUD_DCOC_PASS_IN, 0x00000003},
 429                 {AUD_IIR3_0_SEL, 0x00000021},
 430                 {AUD_DN2_AFC, 0x00000002},
 431                 {AUD_DCOC_1_SRC, 0x0000001b},
 432                 {AUD_DCOC1_SHIFT, 0x00000000},
 433                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 434                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 435                 {AUD_IIR3_1_SEL, 0x00000023},
 436                 {AUD_RDSI_SEL, 0x00000017},
 437                 {AUD_RDSI_SHIFT, 0x00000000},
 438                 {AUD_RDSQ_SEL, 0x00000017},
 439                 {AUD_RDSQ_SHIFT, 0x00000000},
 440                 {AUD_PLL_INT, 0x0000001e},
 441                 {AUD_PLL_DDS, 0x00000000},
 442                 {AUD_PLL_FRAC, 0x0000e542},
 443                 {AUD_POLYPH80SCALEFAC, 0x00000001},
 444                 {AUD_START_TIMER, 0x00000000},
 445                 { /* end of list */ },
 446         };
 447
 448         static const struct rlist a2_bg[] = {
 449                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 450                 {AUD_C1_UP_THR, 0x00007000},
 451                 {AUD_C1_LO_THR, 0x00005400},
 452                 {AUD_C2_UP_THR, 0x00005400},
 453                 {AUD_C2_LO_THR, 0x00003000},
 454                 { /* end of list */ },
 455         };
 456
 457         static const struct rlist a2_dk[] = {
 458                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 459                 {AUD_C1_UP_THR, 0x00007000},
 460                 {AUD_C1_LO_THR, 0x00005400},
 461                 {AUD_C2_UP_THR, 0x00005400},
 462                 {AUD_C2_LO_THR, 0x00003000},
 463                 {AUD_DN0_FREQ, 0x00003a1c},
 464                 {AUD_DN2_FREQ, 0x0000d2e0},
 465                 { /* end of list */ },
 466         };
 467
 468         static const struct rlist a1_i[] = {
 469                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 470                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
 471                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
 472                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
 473                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 474                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 475                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 476                 {AUD_QAM_MODE, 0x05},
 477                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 478                 {AUD_PHACC_FREQ_8LSB, 0x93},
 479                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 480                 {AUD_PLL_INT, 0x0000001e},
 481                 {AUD_PLL_DDS, 0x00000004},
 482                 {AUD_PLL_FRAC, 0x0000e542},
 483                 {AUD_RATE_ADJ1, 0x00000100},
 484                 {AUD_RATE_ADJ2, 0x00000200},
 485                 {AUD_RATE_ADJ3, 0x00000300},
 486                 {AUD_RATE_ADJ4, 0x00000400},
 487                 {AUD_RATE_ADJ5, 0x00000500},
 488                 {AUD_THR_FR, 0x00000000},
 489                 {AUD_PILOT_BQD_1_K0, 0x0000755b},
 490                 {AUD_PILOT_BQD_1_K1, 0x00551340},
 491                 {AUD_PILOT_BQD_1_K2, 0x006d30be},
 492                 {AUD_PILOT_BQD_1_K3, 0xffd394af},
 493                 {AUD_PILOT_BQD_1_K4, 0x00400000},
 494                 {AUD_PILOT_BQD_2_K0, 0x00040000},
 495                 {AUD_PILOT_BQD_2_K1, 0x002a4841},
 496                 {AUD_PILOT_BQD_2_K2, 0x00400000},
 497                 {AUD_PILOT_BQD_2_K3, 0x00000000},
 498                 {AUD_PILOT_BQD_2_K4, 0x00000000},
 499                 {AUD_MODE_CHG_TIMER, 0x00000060},
 500                 {AUD_AFE_12DB_EN, 0x00000001},
 501                 {AAGC_HYST, 0x0000000a},
 502                 {AUD_CORDIC_SHIFT_0, 0x00000007},
 503                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 504                 {AUD_C1_UP_THR, 0x00007000},
 505                 {AUD_C1_LO_THR, 0x00005400},
 506                 {AUD_C2_UP_THR, 0x00005400},
 507                 {AUD_C2_LO_THR, 0x00003000},
 508                 {AUD_DCOC_0_SRC, 0x0000001a},
 509                 {AUD_DCOC0_SHIFT, 0x00000000},
 510                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 511                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 512                 {AUD_DCOC_PASS_IN, 0x00000003},
 513                 {AUD_IIR3_0_SEL, 0x00000021},
 514                 {AUD_DN2_AFC, 0x00000002},
 515                 {AUD_DCOC_1_SRC, 0x0000001b},
 516                 {AUD_DCOC1_SHIFT, 0x00000000},
 517                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 518                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 519                 {AUD_IIR3_1_SEL, 0x00000023},
 520                 {AUD_DN0_FREQ, 0x000035a3},
 521                 {AUD_DN2_FREQ, 0x000029c7},
 522                 {AUD_CRDC0_SRC_SEL, 0x00000511},
 523                 {AUD_IIR1_0_SEL, 0x00000001},
 524                 {AUD_IIR1_1_SEL, 0x00000000},
 525                 {AUD_IIR3_2_SEL, 0x00000003},
 526                 {AUD_IIR3_2_SHIFT, 0x00000000},
 527                 {AUD_IIR3_0_SEL, 0x00000002},
 528                 {AUD_IIR2_0_SEL, 0x00000021},
 529                 {AUD_IIR2_0_SHIFT, 0x00000002},
 530                 {AUD_DEEMPH0_SRC_SEL, 0x0000000b},
 531                 {AUD_DEEMPH1_SRC_SEL, 0x0000000b},
 532                 {AUD_POLYPH80SCALEFAC, 0x00000001},
 533                 {AUD_START_TIMER, 0x00000000},
 534                 { /* end of list */ },
 535         };
 536
 537         static const struct rlist am_l[] = {
 538                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 539                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
 540                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
 541                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
 542                 {AUD_PDF_DDS_CNST_BYTE2, 0x48},
 543                 {AUD_PDF_DDS_CNST_BYTE1, 0x3D},
 544                 {AUD_QAM_MODE, 0x00},
 545                 {AUD_PDF_DDS_CNST_BYTE0, 0xf5},
 546                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 547                 {AUD_PHACC_FREQ_8LSB, 0x4a},
 548                 {AUD_DEEMPHGAIN_R, 0x00006680},
 549                 {AUD_DEEMPHNUMER1_R, 0x000353DE},
 550                 {AUD_DEEMPHNUMER2_R, 0x000001B1},
 551                 {AUD_DEEMPHDENOM1_R, 0x0000F3D0},
 552                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 553                 {AUD_FM_MODE_ENABLE, 0x00000007},
 554                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 555                 {AUD_AFE_12DB_EN, 0x00000001},
 556                 {AAGC_GAIN, 0x00000000},
 557                 {AAGC_HYST, 0x00000018},
 558                 {AAGC_DEF, 0x00000020},
 559                 {AUD_DN0_FREQ, 0x00000000},
 560                 {AUD_POLY0_DDS_CONSTANT, 0x000E4DB2},
 561                 {AUD_DCOC_0_SRC, 0x00000021},
 562                 {AUD_IIR1_0_SEL, 0x00000000},
 563                 {AUD_IIR1_0_SHIFT, 0x00000007},
 564                 {AUD_IIR1_1_SEL, 0x00000002},
 565                 {AUD_IIR1_1_SHIFT, 0x00000000},
 566                 {AUD_DCOC_1_SRC, 0x00000003},
 567                 {AUD_DCOC1_SHIFT, 0x00000000},
 568                 {AUD_DCOC_PASS_IN, 0x00000000},
 569                 {AUD_IIR1_2_SEL, 0x00000023},
 570                 {AUD_IIR1_2_SHIFT, 0x00000000},
 571                 {AUD_IIR1_3_SEL, 0x00000004},
 572                 {AUD_IIR1_3_SHIFT, 0x00000007},
 573                 {AUD_IIR1_4_SEL, 0x00000005},
 574                 {AUD_IIR1_4_SHIFT, 0x00000007},
 575                 {AUD_IIR3_0_SEL, 0x00000007},
 576                 {AUD_IIR3_0_SHIFT, 0x00000000},
 577                 {AUD_DEEMPH0_SRC_SEL, 0x00000011},
 578                 {AUD_DEEMPH0_SHIFT, 0x00000000},
 579                 {AUD_DEEMPH0_G0, 0x00007000},
 580                 {AUD_DEEMPH0_A0, 0x00000000},
 581                 {AUD_DEEMPH0_B0, 0x00000000},
 582                 {AUD_DEEMPH0_A1, 0x00000000},
 583                 {AUD_DEEMPH0_B1, 0x00000000},
 584                 {AUD_DEEMPH1_SRC_SEL, 0x00000011},
 585                 {AUD_DEEMPH1_SHIFT, 0x00000000},
 586                 {AUD_DEEMPH1_G0, 0x00007000},
 587                 {AUD_DEEMPH1_A0, 0x00000000},
 588                 {AUD_DEEMPH1_B0, 0x00000000},
 589                 {AUD_DEEMPH1_A1, 0x00000000},
 590                 {AUD_DEEMPH1_B1, 0x00000000},
 591                 {AUD_OUT0_SEL, 0x0000003F},
 592                 {AUD_OUT1_SEL, 0x0000003F},
 593                 {AUD_DMD_RA_DDS, 0x00F5C285},
 594                 {AUD_PLL_INT, 0x0000001E},
 595                 {AUD_PLL_DDS, 0x00000000},
 596                 {AUD_PLL_FRAC, 0x0000E542},
 597                 {AUD_RATE_ADJ1, 0x00000100},
 598                 {AUD_RATE_ADJ2, 0x00000200},
 599                 {AUD_RATE_ADJ3, 0x00000300},
 600                 {AUD_RATE_ADJ4, 0x00000400},
 601                 {AUD_RATE_ADJ5, 0x00000500},
 602                 {AUD_RATE_THRES_DMD, 0x000000C0},
 603                 { /* end of list */ },
 604         };
 605
 606         static const struct rlist a2_deemph50[] = {
 607                 {AUD_DEEMPH0_G0, 0x00000380},
 608                 {AUD_DEEMPH1_G0, 0x00000380},
 609                 {AUD_DEEMPHGAIN_R, 0x000011e1},
 610                 {AUD_DEEMPHNUMER1_R, 0x0002a7bc},
 611                 {AUD_DEEMPHNUMER2_R, 0x0003023c},
 612                 { /* end of list */ },
 613         };
 614
 615         set_audio_start(core, SEL_A2);
 616         switch (core->tvaudio) {
 617         case WW_BG:
 618                 dprintk("%s PAL-BG A1/2 (status: known-good)\n", __FUNCTION__);
 619                 set_audio_registers(core, a2_bgdk_common);
 620                 set_audio_registers(core, a2_bg);
 621                 set_audio_registers(core, a2_deemph50);
 622                 break;
 623         case WW_DK:
 624                 dprintk("%s PAL-DK A1/2 (status: known-good)\n", __FUNCTION__);
 625                 set_audio_registers(core, a2_bgdk_common);
 626                 set_audio_registers(core, a2_dk);
 627                 set_audio_registers(core, a2_deemph50);
 628                 break;
 629         case WW_I:
 630                 dprintk("%s PAL-I A1 (status: known-good)\n", __FUNCTION__);
 631                 set_audio_registers(core, a1_i);
 632                 set_audio_registers(core, a2_deemph50);
 633                 break;
 634         case WW_L:
 635                 dprintk("%s AM-L (status: devel)\n", __FUNCTION__);
 636                 set_audio_registers(core, am_l);
 637                 break;
 638         default:
 639                 dprintk("%s Warning: wrong value\n", __FUNCTION__);
 640                 return;
 641                 break;
 642         };
 643
 644         mode |= EN_FMRADIO_EN_RDS | EN_DMTRX_SUMDIFF;
 645         set_audio_finish(core, mode);
 646 }
 647
 648 static void set_audio_standard_EIAJ(struct cx88_core *core)
 649 {
 650         static const struct rlist eiaj[] = {
 651                 /* TODO: eiaj register settings are not there yet ... */
 652
 653                 { /* end of list */ },
 654         };
 655         dprintk("%s (status: unknown)\n", __FUNCTION__);
 656
 657         set_audio_start(core, SEL_EIAJ);
 658         set_audio_registers(core, eiaj);
 659         set_audio_finish(core, EN_EIAJ_AUTO_STEREO);
 660 }
 661
 662 static void set_audio_standard_FM(struct cx88_core *core,
 663                                   enum cx88_deemph_type deemph)
 664 {
 665         static const struct rlist fm_deemph_50[] = {
 666                 {AUD_DEEMPH0_G0, 0x0C45},
 667                 {AUD_DEEMPH0_A0, 0x6262},
 668                 {AUD_DEEMPH0_B0, 0x1C29},
 669                 {AUD_DEEMPH0_A1, 0x3FC66},
 670                 {AUD_DEEMPH0_B1, 0x399A},
 671
 672                 {AUD_DEEMPH1_G0, 0x0D80},
 673                 {AUD_DEEMPH1_A0, 0x6262},
 674                 {AUD_DEEMPH1_B0, 0x1C29},
 675                 {AUD_DEEMPH1_A1, 0x3FC66},
 676                 {AUD_DEEMPH1_B1, 0x399A},
 677
 678                 {AUD_POLYPH80SCALEFAC, 0x0003},
 679                 { /* end of list */ },
 680         };
 681         static const struct rlist fm_deemph_75[] = {
 682                 {AUD_DEEMPH0_G0, 0x091B},
 683                 {AUD_DEEMPH0_A0, 0x6B68},
 684                 {AUD_DEEMPH0_B0, 0x11EC},
 685                 {AUD_DEEMPH0_A1, 0x3FC66},
 686                 {AUD_DEEMPH0_B1, 0x399A},
 687
 688                 {AUD_DEEMPH1_G0, 0x0AA0},
 689                 {AUD_DEEMPH1_A0, 0x6B68},
 690                 {AUD_DEEMPH1_B0, 0x11EC},
 691                 {AUD_DEEMPH1_A1, 0x3FC66},
 692                 {AUD_DEEMPH1_B1, 0x399A},
 693
 694                 {AUD_POLYPH80SCALEFAC, 0x0003},
 695                 { /* end of list */ },
 696         };
 697
 698         /* It is enough to leave default values? */
 699         static const struct rlist fm_no_deemph[] = {
 700
 701                 {AUD_POLYPH80SCALEFAC, 0x0003},
 702                 { /* end of list */ },
 703         };
 704
 705         dprintk("%s (status: unknown)\n", __FUNCTION__);
 706         set_audio_start(core, SEL_FMRADIO);
 707
 708         switch (deemph) {
 709         case FM_NO_DEEMPH:
 710                 set_audio_registers(core, fm_no_deemph);
 711                 break;
 712
 713         case FM_DEEMPH_50:
 714                 set_audio_registers(core, fm_deemph_50);
 715                 break;
 716
 717         case FM_DEEMPH_75:
 718                 set_audio_registers(core, fm_deemph_75);
 719                 break;
 720         }
 721
 722         set_audio_finish(core, EN_FMRADIO_AUTO_STEREO);
 723 }
 724
 725 /* ----------------------------------------------------------- */
 726
 727 int cx88_detect_nicam(struct cx88_core *core)
 728 {
 729         int i, j = 0;
 730
 731         dprintk("start nicam autodetect.\n");
 732
 733         for (i = 0; i < 6; i++) {
 734                 /* if bit1=1 then nicam is detected */
 735                 j += ((cx_read(AUD_NICAM_STATUS2) & 0x02) >> 1);
 736
 737                 if (j == 1) {
 738                         dprintk("nicam is detected.\n");
 739                         return 1;
 740                 }
 741
 742                 /* wait a little bit for next reading status */
 743                 msleep(10);
 744         }
 745
 746         dprintk("nicam is not detected.\n");
 747         return 0;
 748 }
 749
 750 void cx88_set_tvaudio(struct cx88_core *core)
 751 {
 752         switch (core->tvaudio) {
 753         case WW_BTSC:
 754                 set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
 755                 break;
 756         case WW_BG:
 757         case WW_DK:
 758         case WW_I:
 759         case WW_L:
 760                 /* prepare all dsp registers */
 761                 set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 762
 763                 /* set nicam mode - otherwise
 764                    AUD_NICAM_STATUS2 contains wrong values */
 765                 set_audio_standard_NICAM(core, EN_NICAM_AUTO_STEREO);
 766                 if (0 == cx88_detect_nicam(core)) {
 767                         /* fall back to fm / am mono */
 768                         set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 769                         core->use_nicam = 0;
 770                 } else {
 771                         core->use_nicam = 1;
 772                 }
 773                 break;
 774         case WW_EIAJ:
 775                 set_audio_standard_EIAJ(core);
 776                 break;
 777         case WW_FM:
 778                 set_audio_standard_FM(core, FM_NO_DEEMPH);
 779                 break;
 780         case WW_NONE:
 781         default:
 782                 printk("%s/0: unknown tv audio mode [%d]\n",
 783                        core->name, core->tvaudio);
 784                 break;
 785         }
 786         return;
 787 }
 788
 789 void cx88_newstation(struct cx88_core *core)
 790 {
 791         core->audiomode_manual = UNSET;
 792 }
 793
 794 void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 795 {
 796         static char *m[] = { "stereo", "dual mono", "mono", "sap" };
 797         static char *p[] = { "no pilot", "pilot c1", "pilot c2", "?" };
 798         u32 reg, mode, pilot;
 799
 800         reg = cx_read(AUD_STATUS);
 801         mode = reg & 0x03;
 802         pilot = (reg >> 2) & 0x03;
 803
 804         if (core->astat != reg)
 805                 dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
 806                         reg, m[mode], p[pilot],
 807                         aud_ctl_names[cx_read(AUD_CTL) & 63]);
 808         core->astat = reg;
 809
 810 /* TODO
 811        Reading from AUD_STATUS is not enough
 812        for auto-detecting sap/dual-fm/nicam.
 813        Add some code here later.
 814 */
 815
 816 # if 0
 817         t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP |
 818             V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
 819         t->rxsubchans = V4L2_TUNER_SUB_MONO;
 820         t->audmode = V4L2_TUNER_MODE_MONO;
 821
 822         switch (core->tvaudio) {
 823         case WW_BTSC:
 824                 t->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_SAP;
 825                 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
 826                 if (1 == pilot) {
 827                         /* SAP */
 828                         t->rxsubchans |= V4L2_TUNER_SUB_SAP;
 829                 }
 830                 break;
 831         case WW_A2_BG:
 832         case WW_A2_DK:
 833         case WW_A2_M:
 834                 if (1 == pilot) {
 835                         /* stereo */
 836                         t->rxsubchans =
 837                             V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 838                         if (0 == mode)
 839                                 t->audmode = V4L2_TUNER_MODE_STEREO;
 840                 }
 841                 if (2 == pilot) {
 842                         /* dual language -- FIXME */
 843                         t->rxsubchans =
 844                             V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 845                         t->audmode = V4L2_TUNER_MODE_LANG1;
 846                 }
 847                 break;
 848         case WW_NICAM_BGDKL:
 849                 if (0 == mode) {
 850                         t->audmode = V4L2_TUNER_MODE_STEREO;
 851                         t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 852                 }
 853                 break;
 854         case WW_SYSTEM_L_AM:
 855                 if (0x0 == mode && !(cx_read(AUD_INIT) & 0x04)) {
 856                         t->audmode = V4L2_TUNER_MODE_STEREO;
 857                         t->rxsubchans |= V4L2_TUNER_SUB_STEREO;
 858                 }
 859                 break;
 860         default:
 861                 /* nothing */
 862                 break;
 863         }
 864 # endif
 865         return;
 866 }
 867
 868 void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 869 {
 870         u32 ctl = UNSET;
 871         u32 mask = UNSET;
 872
 873         if (manual) {
 874                 core->audiomode_manual = mode;
 875         } else {
 876                 if (UNSET != core->audiomode_manual)
 877                         return;
 878         }
 879         core->audiomode_current = mode;
 880
 881         switch (core->tvaudio) {
 882         case WW_BTSC:
 883                 switch (mode) {
 884                 case V4L2_TUNER_MODE_MONO:
 885                         set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_MONO);
 886                         break;
 887                 case V4L2_TUNER_MODE_LANG1:
 888                         set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
 889                         break;
 890                 case V4L2_TUNER_MODE_LANG2:
 891                         set_audio_standard_BTSC(core, 1, EN_BTSC_FORCE_SAP);
 892                         break;
 893                 case V4L2_TUNER_MODE_STEREO:
 894                 case V4L2_TUNER_MODE_LANG1_LANG2:
 895                         set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_STEREO);
 896                         break;
 897                 }
 898                 break;
 899         case WW_BG:
 900         case WW_DK:
 901         case WW_I:
 902         case WW_L:
 903                 if (1 == core->use_nicam) {
 904                         switch (mode) {
 905                         case V4L2_TUNER_MODE_MONO:
 906                         case V4L2_TUNER_MODE_LANG1:
 907                                 set_audio_standard_NICAM(core,
 908                                                          EN_NICAM_FORCE_MONO1);
 909                                 break;
 910                         case V4L2_TUNER_MODE_LANG2:
 911                                 set_audio_standard_NICAM(core,
 912                                                          EN_NICAM_FORCE_MONO2);
 913                                 break;
 914                         case V4L2_TUNER_MODE_STEREO:
 915                         case V4L2_TUNER_MODE_LANG1_LANG2:
 916                                 set_audio_standard_NICAM(core,
 917                                                          EN_NICAM_FORCE_STEREO);
 918                                 break;
 919                         }
 920                 } else {
 921                         if ((core->tvaudio == WW_I) || (core->tvaudio == WW_L)) {
 922                                 /* fall back to fm / am mono */
 923                                 set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 924                         } else {
 925                                 /* TODO: Add A2 autodection */
 926                                 switch (mode) {
 927                                 case V4L2_TUNER_MODE_MONO:
 928                                 case V4L2_TUNER_MODE_LANG1:
 929                                         set_audio_standard_A2(core,
 930                                                               EN_A2_FORCE_MONO1);
 931                                         break;
 932                                 case V4L2_TUNER_MODE_LANG2:
 933                                         set_audio_standard_A2(core,
 934                                                               EN_A2_FORCE_MONO2);
 935                                         break;
 936                                 case V4L2_TUNER_MODE_STEREO:
 937                                 case V4L2_TUNER_MODE_LANG1_LANG2:
 938                                         set_audio_standard_A2(core,
 939                                                               EN_A2_FORCE_STEREO);
 940                                         break;
 941                                 }
 942                         }
 943                 }
 944                 break;
 945         case WW_FM:
 946                 switch (mode) {
 947                 case V4L2_TUNER_MODE_MONO:
 948                         ctl = EN_FMRADIO_FORCE_MONO;
 949                         mask = 0x3f;
 950                         break;
 951                 case V4L2_TUNER_MODE_STEREO:
 952                         ctl = EN_FMRADIO_AUTO_STEREO;
 953                         mask = 0x3f;
 954                         break;
 955                 }
 956                 break;
 957         }
 958
 959         if (UNSET != ctl) {
 960                 dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
 961                         "[status=0x%x,ctl=0x%x,vol=0x%x]\n",
 962                         mask, ctl, cx_read(AUD_STATUS),
 963                         cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
 964                 cx_andor(AUD_CTL, mask, ctl);
 965         }
 966         return;
 967 }
 968
 969 int cx88_audio_thread(void *data)
 970 {
 971         struct cx88_core *core = data;
 972         struct v4l2_tuner t;
 973         u32 mode = 0;
 974
 975         dprintk("cx88: tvaudio thread started\n");
 976         for (;;) {
 977                 msleep_interruptible(1000);
 978                 if (kthread_should_stop())
 979                         break;
 980
 981                 /* just monitor the audio status for now ... */
 982                 memset(&t, 0, sizeof(t));
 983                 cx88_get_stereo(core, &t);
 984
 985                 if (UNSET != core->audiomode_manual)
 986                         /* manually set, don't do anything. */
 987                         continue;
 988
 989                 /* monitor signal */
 990                 if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
 991                         mode = V4L2_TUNER_MODE_STEREO;
 992                 else
 993                         mode = V4L2_TUNER_MODE_MONO;
 994                 if (mode == core->audiomode_current)
 995                         continue;
 996
 997                 /* automatically switch to best available mode */
 998                 cx88_set_stereo(core, mode, 0);
 999         }
1000
1001         dprintk("cx88: tvaudio thread exiting\n");
1002         return 0;
1003 }
1004
1005 /* ----------------------------------------------------------- */
1006
1007 EXPORT_SYMBOL(cx88_set_tvaudio);
1008 EXPORT_SYMBOL(cx88_newstation);
1009 EXPORT_SYMBOL(cx88_set_stereo);
1010 EXPORT_SYMBOL(cx88_get_stereo);
1011 EXPORT_SYMBOL(cx88_audio_thread);
1012
1013 /*
1014  * Local variables:
1015  * c-basic-offset: 8
1016  * End:
1017  * 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
1018  */