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