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