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/freezer.h>
  42 #include <linux/kernel.h>
  43 #include <linux/slab.h>
  44 #include <linux/mm.h>
  45 #include <linux/poll.h>
  46 #include <linux/signal.h>
  47 #include <linux/ioport.h>
  48 #include <linux/types.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/vmalloc.h>
  51 #include <linux/init.h>
  52 #include <linux/smp_lock.h>
  53 #include <linux/delay.h>
  54 #include <linux/kthread.h>
  55
  56 #include "cx88.h"
  57
  58 static unsigned int audio_debug = 0;
  59 module_param(audio_debug, int, 0644);
  60 MODULE_PARM_DESC(audio_debug, "enable debug messages [audio]");
  61
  62 static unsigned int always_analog = 0;
  63 module_param(always_analog,int,0644);
  64 MODULE_PARM_DESC(always_analog,"force analog audio out");
  65
  66
  67 #define dprintk(fmt, arg...)    if (audio_debug) \
  68         printk(KERN_DEBUG "%s/0: " fmt, core->name , ## arg)
  69
  70 /* ----------------------------------------------------------- */
  71
  72 static char *aud_ctl_names[64] = {
  73         [EN_BTSC_FORCE_MONO] = "BTSC_FORCE_MONO",
  74         [EN_BTSC_FORCE_STEREO] = "BTSC_FORCE_STEREO",
  75         [EN_BTSC_FORCE_SAP] = "BTSC_FORCE_SAP",
  76         [EN_BTSC_AUTO_STEREO] = "BTSC_AUTO_STEREO",
  77         [EN_BTSC_AUTO_SAP] = "BTSC_AUTO_SAP",
  78         [EN_A2_FORCE_MONO1] = "A2_FORCE_MONO1",
  79         [EN_A2_FORCE_MONO2] = "A2_FORCE_MONO2",
  80         [EN_A2_FORCE_STEREO] = "A2_FORCE_STEREO",
  81         [EN_A2_AUTO_MONO2] = "A2_AUTO_MONO2",
  82         [EN_A2_AUTO_STEREO] = "A2_AUTO_STEREO",
  83         [EN_EIAJ_FORCE_MONO1] = "EIAJ_FORCE_MONO1",
  84         [EN_EIAJ_FORCE_MONO2] = "EIAJ_FORCE_MONO2",
  85         [EN_EIAJ_FORCE_STEREO] = "EIAJ_FORCE_STEREO",
  86         [EN_EIAJ_AUTO_MONO2] = "EIAJ_AUTO_MONO2",
  87         [EN_EIAJ_AUTO_STEREO] = "EIAJ_AUTO_STEREO",
  88         [EN_NICAM_FORCE_MONO1] = "NICAM_FORCE_MONO1",
  89         [EN_NICAM_FORCE_MONO2] = "NICAM_FORCE_MONO2",
  90         [EN_NICAM_FORCE_STEREO] = "NICAM_FORCE_STEREO",
  91         [EN_NICAM_AUTO_MONO2] = "NICAM_AUTO_MONO2",
  92         [EN_NICAM_AUTO_STEREO] = "NICAM_AUTO_STEREO",
  93         [EN_FMRADIO_FORCE_MONO] = "FMRADIO_FORCE_MONO",
  94         [EN_FMRADIO_FORCE_STEREO] = "FMRADIO_FORCE_STEREO",
  95         [EN_FMRADIO_AUTO_STEREO] = "FMRADIO_AUTO_STEREO",
  96 };
  97
  98 struct rlist {
  99         u32 reg;
 100         u32 val;
 101 };
 102
 103 static void set_audio_registers(struct cx88_core *core, const struct rlist *l)
 104 {
 105         int i;
 106
 107         for (i = 0; l[i].reg; i++) {
 108                 switch (l[i].reg) {
 109                 case AUD_PDF_DDS_CNST_BYTE2:
 110                 case AUD_PDF_DDS_CNST_BYTE1:
 111                 case AUD_PDF_DDS_CNST_BYTE0:
 112                 case AUD_QAM_MODE:
 113                 case AUD_PHACC_FREQ_8MSB:
 114                 case AUD_PHACC_FREQ_8LSB:
 115                         cx_writeb(l[i].reg, l[i].val);
 116                         break;
 117                 default:
 118                         cx_write(l[i].reg, l[i].val);
 119                         break;
 120                 }
 121         }
 122 }
 123
 124 static void set_audio_start(struct cx88_core *core, u32 mode)
 125 {
 126         /* mute */
 127         cx_write(AUD_VOL_CTL, (1 << 6));
 128
 129         /* start programming */
 130         cx_write(AUD_INIT, mode);
 131         cx_write(AUD_INIT_LD, 0x0001);
 132         cx_write(AUD_SOFT_RESET, 0x0001);
 133 }
 134
 135 static void set_audio_finish(struct cx88_core *core, u32 ctl)
 136 {
 137         u32 volume;
 138
 139         /* restart dma; This avoids buzz in NICAM and is good in others  */
 140         cx88_stop_audio_dma(core);
 141         cx_write(AUD_RATE_THRES_DMD, 0x000000C0);
 142         cx88_start_audio_dma(core);
 143
 144         if (cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD) {
 145                 cx_write(AUD_I2SINPUTCNTL, 4);
 146                 cx_write(AUD_BAUDRATE, 1);
 147                 /* 'pass-thru mode': this enables the i2s output to the mpeg encoder */
 148                 cx_set(AUD_CTL, EN_I2SOUT_ENABLE);
 149                 cx_write(AUD_I2SOUTPUTCNTL, 1);
 150                 cx_write(AUD_I2SCNTL, 0);
 151                 /* cx_write(AUD_APB_IN_RATE_ADJ, 0); */
 152         }
 153         if ((always_analog) || (!(cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD))) {
 154                 ctl |= EN_DAC_ENABLE;
 155                 cx_write(AUD_CTL, ctl);
 156         }
 157
 158         /* finish programming */
 159         cx_write(AUD_SOFT_RESET, 0x0000);
 160
 161         /* unmute */
 162         volume = cx_sread(SHADOW_AUD_VOL_CTL);
 163         cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, volume);
 164 }
 165
 166 /* ----------------------------------------------------------- */
 167
 168 static void set_audio_standard_BTSC(struct cx88_core *core, unsigned int sap,
 169                                     u32 mode)
 170 {
 171         static const struct rlist btsc[] = {
 172                 {AUD_AFE_12DB_EN, 0x00000001},
 173                 {AUD_OUT1_SEL, 0x00000013},
 174                 {AUD_OUT1_SHIFT, 0x00000000},
 175                 {AUD_POLY0_DDS_CONSTANT, 0x0012010c},
 176                 {AUD_DMD_RA_DDS, 0x00c3e7aa},
 177                 {AUD_DBX_IN_GAIN, 0x00004734},
 178                 {AUD_DBX_WBE_GAIN, 0x00004640},
 179                 {AUD_DBX_SE_GAIN, 0x00008d31},
 180                 {AUD_DCOC_0_SRC, 0x0000001a},
 181                 {AUD_IIR1_4_SEL, 0x00000021},
 182                 {AUD_DCOC_PASS_IN, 0x00000003},
 183                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 184                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 185                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 186                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 187                 {AUD_DN0_FREQ, 0x0000283b},
 188                 {AUD_DN2_SRC_SEL, 0x00000008},
 189                 {AUD_DN2_FREQ, 0x00003000},
 190                 {AUD_DN2_AFC, 0x00000002},
 191                 {AUD_DN2_SHFT, 0x00000000},
 192                 {AUD_IIR2_2_SEL, 0x00000020},
 193                 {AUD_IIR2_2_SHIFT, 0x00000000},
 194                 {AUD_IIR2_3_SEL, 0x0000001f},
 195                 {AUD_IIR2_3_SHIFT, 0x00000000},
 196                 {AUD_CRDC1_SRC_SEL, 0x000003ce},
 197                 {AUD_CRDC1_SHIFT, 0x00000000},
 198                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 199                 {AUD_DCOC_1_SRC, 0x0000001b},
 200                 {AUD_DCOC1_SHIFT, 0x00000000},
 201                 {AUD_RDSI_SEL, 0x00000008},
 202                 {AUD_RDSQ_SEL, 0x00000008},
 203                 {AUD_RDSI_SHIFT, 0x00000000},
 204                 {AUD_RDSQ_SHIFT, 0x00000000},
 205                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 206                 { /* end of list */ },
 207         };
 208         static const struct rlist btsc_sap[] = {
 209                 {AUD_AFE_12DB_EN, 0x00000001},
 210                 {AUD_DBX_IN_GAIN, 0x00007200},
 211                 {AUD_DBX_WBE_GAIN, 0x00006200},
 212                 {AUD_DBX_SE_GAIN, 0x00006200},
 213                 {AUD_IIR1_1_SEL, 0x00000000},
 214                 {AUD_IIR1_3_SEL, 0x00000001},
 215                 {AUD_DN1_SRC_SEL, 0x00000007},
 216                 {AUD_IIR1_4_SHIFT, 0x00000006},
 217                 {AUD_IIR2_1_SHIFT, 0x00000000},
 218                 {AUD_IIR2_2_SHIFT, 0x00000000},
 219                 {AUD_IIR3_0_SHIFT, 0x00000000},
 220                 {AUD_IIR3_1_SHIFT, 0x00000000},
 221                 {AUD_IIR3_0_SEL, 0x0000000d},
 222                 {AUD_IIR3_1_SEL, 0x0000000e},
 223                 {AUD_DEEMPH1_SRC_SEL, 0x00000014},
 224                 {AUD_DEEMPH1_SHIFT, 0x00000000},
 225                 {AUD_DEEMPH1_G0, 0x00004000},
 226                 {AUD_DEEMPH1_A0, 0x00000000},
 227                 {AUD_DEEMPH1_B0, 0x00000000},
 228                 {AUD_DEEMPH1_A1, 0x00000000},
 229                 {AUD_DEEMPH1_B1, 0x00000000},
 230                 {AUD_OUT0_SEL, 0x0000003f},
 231                 {AUD_OUT1_SEL, 0x0000003f},
 232                 {AUD_DN1_AFC, 0x00000002},
 233                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 234                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 235                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 236                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 237                 {AUD_IIR1_0_SEL, 0x0000001d},
 238                 {AUD_IIR1_2_SEL, 0x0000001e},
 239                 {AUD_IIR2_1_SEL, 0x00000002},
 240                 {AUD_IIR2_2_SEL, 0x00000004},
 241                 {AUD_IIR3_2_SEL, 0x0000000f},
 242                 {AUD_DCOC2_SHIFT, 0x00000001},
 243                 {AUD_IIR3_2_SHIFT, 0x00000001},
 244                 {AUD_DEEMPH0_SRC_SEL, 0x00000014},
 245                 {AUD_CORDIC_SHIFT_1, 0x00000006},
 246                 {AUD_POLY0_DDS_CONSTANT, 0x000e4db2},
 247                 {AUD_DMD_RA_DDS, 0x00f696e6},
 248                 {AUD_IIR2_3_SEL, 0x00000025},
 249                 {AUD_IIR1_4_SEL, 0x00000021},
 250                 {AUD_DN1_FREQ, 0x0000c965},
 251                 {AUD_DCOC_PASS_IN, 0x00000003},
 252                 {AUD_DCOC_0_SRC, 0x0000001a},
 253                 {AUD_DCOC_1_SRC, 0x0000001b},
 254                 {AUD_DCOC1_SHIFT, 0x00000000},
 255                 {AUD_RDSI_SEL, 0x00000009},
 256                 {AUD_RDSQ_SEL, 0x00000009},
 257                 {AUD_RDSI_SHIFT, 0x00000000},
 258                 {AUD_RDSQ_SHIFT, 0x00000000},
 259                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 260                 { /* end of list */ },
 261         };
 262
 263         mode |= EN_FMRADIO_EN_RDS;
 264
 265         if (sap) {
 266                 dprintk("%s SAP (status: unknown)\n", __FUNCTION__);
 267                 set_audio_start(core, SEL_SAP);
 268                 set_audio_registers(core, btsc_sap);
 269                 set_audio_finish(core, mode);
 270         } else {
 271                 dprintk("%s (status: known-good)\n", __FUNCTION__);
 272                 set_audio_start(core, SEL_BTSC);
 273                 set_audio_registers(core, btsc);
 274                 set_audio_finish(core, mode);
 275         }
 276 }
 277
 278 static void set_audio_standard_NICAM(struct cx88_core *core, u32 mode)
 279 {
 280         static const struct rlist nicam_l[] = {
 281                 {AUD_AFE_12DB_EN, 0x00000001},
 282                 {AUD_RATE_ADJ1, 0x00000060},
 283                 {AUD_RATE_ADJ2, 0x000000F9},
 284                 {AUD_RATE_ADJ3, 0x000001CC},
 285                 {AUD_RATE_ADJ4, 0x000002B3},
 286                 {AUD_RATE_ADJ5, 0x00000726},
 287                 {AUD_DEEMPHDENOM1_R, 0x0000F3D0},
 288                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 289                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 290                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
 291                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
 292                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
 293                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 294                 {AUD_DMD_RA_DDS, 0x00C00000},
 295                 {AUD_PLL_INT, 0x0000001E},
 296                 {AUD_PLL_DDS, 0x00000000},
 297                 {AUD_PLL_FRAC, 0x0000E542},
 298                 {AUD_START_TIMER, 0x00000000},
 299                 {AUD_DEEMPHNUMER1_R, 0x000353DE},
 300                 {AUD_DEEMPHNUMER2_R, 0x000001B1},
 301                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 302                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 303                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 304                 {AUD_QAM_MODE, 0x05},
 305                 {AUD_PHACC_FREQ_8MSB, 0x34},
 306                 {AUD_PHACC_FREQ_8LSB, 0x4C},
 307                 {AUD_DEEMPHGAIN_R, 0x00006680},
 308                 {AUD_RATE_THRES_DMD, 0x000000C0},
 309                 { /* end of list */ },
 310         };
 311
 312         static const struct rlist nicam_bgdki_common[] = {
 313                 {AUD_AFE_12DB_EN, 0x00000001},
 314                 {AUD_RATE_ADJ1, 0x00000010},
 315                 {AUD_RATE_ADJ2, 0x00000040},
 316                 {AUD_RATE_ADJ3, 0x00000100},
 317                 {AUD_RATE_ADJ4, 0x00000400},
 318                 {AUD_RATE_ADJ5, 0x00001000},
 319                 {AUD_ERRLOGPERIOD_R, 0x00000fff},
 320                 {AUD_ERRINTRPTTHSHLD1_R, 0x000003ff},
 321                 {AUD_ERRINTRPTTHSHLD2_R, 0x000000ff},
 322                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000003f},
 323                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 324                 {AUD_DEEMPHGAIN_R, 0x000023c2},
 325                 {AUD_DEEMPHNUMER1_R, 0x0002a7bc},
 326                 {AUD_DEEMPHNUMER2_R, 0x0003023e},
 327                 {AUD_DEEMPHDENOM1_R, 0x0000f3d0},
 328                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 329                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 330                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 331                 {AUD_QAM_MODE, 0x05},
 332                 { /* end of list */ },
 333         };
 334
 335         static const struct rlist nicam_i[] = {
 336                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 337                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 338                 {AUD_PHACC_FREQ_8LSB, 0x93},
 339                 { /* end of list */ },
 340         };
 341
 342         static const struct rlist nicam_default[] = {
 343                 {AUD_PDF_DDS_CNST_BYTE0, 0x16},
 344                 {AUD_PHACC_FREQ_8MSB, 0x34},
 345                 {AUD_PHACC_FREQ_8LSB, 0x4c},
 346                 { /* end of list */ },
 347         };
 348
 349         set_audio_start(core,SEL_NICAM);
 350         switch (core->tvaudio) {
 351         case WW_L:
 352                 dprintk("%s SECAM-L NICAM (status: devel)\n", __FUNCTION__);
 353                 set_audio_registers(core, nicam_l);
 354                 break;
 355         case WW_I:
 356                 dprintk("%s PAL-I NICAM (status: known-good)\n", __FUNCTION__);
 357                 set_audio_registers(core, nicam_bgdki_common);
 358                 set_audio_registers(core, nicam_i);
 359                 break;
 360         default:
 361                 dprintk("%s PAL-BGDK NICAM (status: known-good)\n", __FUNCTION__);
 362                 set_audio_registers(core, nicam_bgdki_common);
 363                 set_audio_registers(core, nicam_default);
 364                 break;
 365         };
 366
 367         mode |= EN_DMTRX_LR | EN_DMTRX_BYPASS;
 368         set_audio_finish(core, mode);
 369 }
 370
 371 static void set_audio_standard_A2(struct cx88_core *core, u32 mode)
 372 {
 373         static const struct rlist a2_bgdk_common[] = {
 374                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 375                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
 376                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
 377                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
 378                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 379                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 380                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 381                 {AUD_QAM_MODE, 0x05},
 382                 {AUD_PHACC_FREQ_8MSB, 0x34},
 383                 {AUD_PHACC_FREQ_8LSB, 0x4c},
 384                 {AUD_RATE_ADJ1, 0x00000100},
 385                 {AUD_RATE_ADJ2, 0x00000200},
 386                 {AUD_RATE_ADJ3, 0x00000300},
 387                 {AUD_RATE_ADJ4, 0x00000400},
 388                 {AUD_RATE_ADJ5, 0x00000500},
 389                 {AUD_THR_FR, 0x00000000},
 390                 {AAGC_HYST, 0x0000001a},
 391                 {AUD_PILOT_BQD_1_K0, 0x0000755b},
 392                 {AUD_PILOT_BQD_1_K1, 0x00551340},
 393                 {AUD_PILOT_BQD_1_K2, 0x006d30be},
 394                 {AUD_PILOT_BQD_1_K3, 0xffd394af},
 395                 {AUD_PILOT_BQD_1_K4, 0x00400000},
 396                 {AUD_PILOT_BQD_2_K0, 0x00040000},
 397                 {AUD_PILOT_BQD_2_K1, 0x002a4841},
 398                 {AUD_PILOT_BQD_2_K2, 0x00400000},
 399                 {AUD_PILOT_BQD_2_K3, 0x00000000},
 400                 {AUD_PILOT_BQD_2_K4, 0x00000000},
 401                 {AUD_MODE_CHG_TIMER, 0x00000040},
 402                 {AUD_AFE_12DB_EN, 0x00000001},
 403                 {AUD_CORDIC_SHIFT_0, 0x00000007},
 404                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 405                 {AUD_DEEMPH0_G0, 0x00000380},
 406                 {AUD_DEEMPH1_G0, 0x00000380},
 407                 {AUD_DCOC_0_SRC, 0x0000001a},
 408                 {AUD_DCOC0_SHIFT, 0x00000000},
 409                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 410                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 411                 {AUD_DCOC_PASS_IN, 0x00000003},
 412                 {AUD_IIR3_0_SEL, 0x00000021},
 413                 {AUD_DN2_AFC, 0x00000002},
 414                 {AUD_DCOC_1_SRC, 0x0000001b},
 415                 {AUD_DCOC1_SHIFT, 0x00000000},
 416                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 417                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 418                 {AUD_IIR3_1_SEL, 0x00000023},
 419                 {AUD_RDSI_SEL, 0x00000017},
 420                 {AUD_RDSI_SHIFT, 0x00000000},
 421                 {AUD_RDSQ_SEL, 0x00000017},
 422                 {AUD_RDSQ_SHIFT, 0x00000000},
 423                 {AUD_PLL_INT, 0x0000001e},
 424                 {AUD_PLL_DDS, 0x00000000},
 425                 {AUD_PLL_FRAC, 0x0000e542},
 426                 {AUD_POLYPH80SCALEFAC, 0x00000001},
 427                 {AUD_START_TIMER, 0x00000000},
 428                 { /* end of list */ },
 429         };
 430
 431         static const struct rlist a2_bg[] = {
 432                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 433                 {AUD_C1_UP_THR, 0x00007000},
 434                 {AUD_C1_LO_THR, 0x00005400},
 435                 {AUD_C2_UP_THR, 0x00005400},
 436                 {AUD_C2_LO_THR, 0x00003000},
 437                 { /* end of list */ },
 438         };
 439
 440         static const struct rlist a2_dk[] = {
 441                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 442                 {AUD_C1_UP_THR, 0x00007000},
 443                 {AUD_C1_LO_THR, 0x00005400},
 444                 {AUD_C2_UP_THR, 0x00005400},
 445                 {AUD_C2_LO_THR, 0x00003000},
 446                 {AUD_DN0_FREQ, 0x00003a1c},
 447                 {AUD_DN2_FREQ, 0x0000d2e0},
 448                 { /* end of list */ },
 449         };
 450
 451         static const struct rlist a1_i[] = {
 452                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 453                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000fff},
 454                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001f},
 455                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000f},
 456                 {AUD_PDF_DDS_CNST_BYTE2, 0x06},
 457                 {AUD_PDF_DDS_CNST_BYTE1, 0x82},
 458                 {AUD_PDF_DDS_CNST_BYTE0, 0x12},
 459                 {AUD_QAM_MODE, 0x05},
 460                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 461                 {AUD_PHACC_FREQ_8LSB, 0x93},
 462                 {AUD_DMD_RA_DDS, 0x002a4f2f},
 463                 {AUD_PLL_INT, 0x0000001e},
 464                 {AUD_PLL_DDS, 0x00000004},
 465                 {AUD_PLL_FRAC, 0x0000e542},
 466                 {AUD_RATE_ADJ1, 0x00000100},
 467                 {AUD_RATE_ADJ2, 0x00000200},
 468                 {AUD_RATE_ADJ3, 0x00000300},
 469                 {AUD_RATE_ADJ4, 0x00000400},
 470                 {AUD_RATE_ADJ5, 0x00000500},
 471                 {AUD_THR_FR, 0x00000000},
 472                 {AUD_PILOT_BQD_1_K0, 0x0000755b},
 473                 {AUD_PILOT_BQD_1_K1, 0x00551340},
 474                 {AUD_PILOT_BQD_1_K2, 0x006d30be},
 475                 {AUD_PILOT_BQD_1_K3, 0xffd394af},
 476                 {AUD_PILOT_BQD_1_K4, 0x00400000},
 477                 {AUD_PILOT_BQD_2_K0, 0x00040000},
 478                 {AUD_PILOT_BQD_2_K1, 0x002a4841},
 479                 {AUD_PILOT_BQD_2_K2, 0x00400000},
 480                 {AUD_PILOT_BQD_2_K3, 0x00000000},
 481                 {AUD_PILOT_BQD_2_K4, 0x00000000},
 482                 {AUD_MODE_CHG_TIMER, 0x00000060},
 483                 {AUD_AFE_12DB_EN, 0x00000001},
 484                 {AAGC_HYST, 0x0000000a},
 485                 {AUD_CORDIC_SHIFT_0, 0x00000007},
 486                 {AUD_CORDIC_SHIFT_1, 0x00000007},
 487                 {AUD_C1_UP_THR, 0x00007000},
 488                 {AUD_C1_LO_THR, 0x00005400},
 489                 {AUD_C2_UP_THR, 0x00005400},
 490                 {AUD_C2_LO_THR, 0x00003000},
 491                 {AUD_DCOC_0_SRC, 0x0000001a},
 492                 {AUD_DCOC0_SHIFT, 0x00000000},
 493                 {AUD_DCOC_0_SHIFT_IN0, 0x0000000a},
 494                 {AUD_DCOC_0_SHIFT_IN1, 0x00000008},
 495                 {AUD_DCOC_PASS_IN, 0x00000003},
 496                 {AUD_IIR3_0_SEL, 0x00000021},
 497                 {AUD_DN2_AFC, 0x00000002},
 498                 {AUD_DCOC_1_SRC, 0x0000001b},
 499                 {AUD_DCOC1_SHIFT, 0x00000000},
 500                 {AUD_DCOC_1_SHIFT_IN0, 0x0000000a},
 501                 {AUD_DCOC_1_SHIFT_IN1, 0x00000008},
 502                 {AUD_IIR3_1_SEL, 0x00000023},
 503                 {AUD_DN0_FREQ, 0x000035a3},
 504                 {AUD_DN2_FREQ, 0x000029c7},
 505                 {AUD_CRDC0_SRC_SEL, 0x00000511},
 506                 {AUD_IIR1_0_SEL, 0x00000001},
 507                 {AUD_IIR1_1_SEL, 0x00000000},
 508                 {AUD_IIR3_2_SEL, 0x00000003},
 509                 {AUD_IIR3_2_SHIFT, 0x00000000},
 510                 {AUD_IIR3_0_SEL, 0x00000002},
 511                 {AUD_IIR2_0_SEL, 0x00000021},
 512                 {AUD_IIR2_0_SHIFT, 0x00000002},
 513                 {AUD_DEEMPH0_SRC_SEL, 0x0000000b},
 514                 {AUD_DEEMPH1_SRC_SEL, 0x0000000b},
 515                 {AUD_POLYPH80SCALEFAC, 0x00000001},
 516                 {AUD_START_TIMER, 0x00000000},
 517                 { /* end of list */ },
 518         };
 519
 520         static const struct rlist am_l[] = {
 521                 {AUD_ERRLOGPERIOD_R, 0x00000064},
 522                 {AUD_ERRINTRPTTHSHLD1_R, 0x00000FFF},
 523                 {AUD_ERRINTRPTTHSHLD2_R, 0x0000001F},
 524                 {AUD_ERRINTRPTTHSHLD3_R, 0x0000000F},
 525                 {AUD_PDF_DDS_CNST_BYTE2, 0x48},
 526                 {AUD_PDF_DDS_CNST_BYTE1, 0x3D},
 527                 {AUD_QAM_MODE, 0x00},
 528                 {AUD_PDF_DDS_CNST_BYTE0, 0xf5},
 529                 {AUD_PHACC_FREQ_8MSB, 0x3a},
 530                 {AUD_PHACC_FREQ_8LSB, 0x4a},
 531                 {AUD_DEEMPHGAIN_R, 0x00006680},
 532                 {AUD_DEEMPHNUMER1_R, 0x000353DE},
 533                 {AUD_DEEMPHNUMER2_R, 0x000001B1},
 534                 {AUD_DEEMPHDENOM1_R, 0x0000F3D0},
 535                 {AUD_DEEMPHDENOM2_R, 0x00000000},
 536                 {AUD_FM_MODE_ENABLE, 0x00000007},
 537                 {AUD_POLYPH80SCALEFAC, 0x00000003},
 538                 {AUD_AFE_12DB_EN, 0x00000001},
 539                 {AAGC_GAIN, 0x00000000},
 540                 {AAGC_HYST, 0x00000018},
 541                 {AAGC_DEF, 0x00000020},
 542                 {AUD_DN0_FREQ, 0x00000000},
 543                 {AUD_POLY0_DDS_CONSTANT, 0x000E4DB2},
 544                 {AUD_DCOC_0_SRC, 0x00000021},
 545                 {AUD_IIR1_0_SEL, 0x00000000},
 546                 {AUD_IIR1_0_SHIFT, 0x00000007},
 547                 {AUD_IIR1_1_SEL, 0x00000002},
 548                 {AUD_IIR1_1_SHIFT, 0x00000000},
 549                 {AUD_DCOC_1_SRC, 0x00000003},
 550                 {AUD_DCOC1_SHIFT, 0x00000000},
 551                 {AUD_DCOC_PASS_IN, 0x00000000},
 552                 {AUD_IIR1_2_SEL, 0x00000023},
 553                 {AUD_IIR1_2_SHIFT, 0x00000000},
 554                 {AUD_IIR1_3_SEL, 0x00000004},
 555                 {AUD_IIR1_3_SHIFT, 0x00000007},
 556                 {AUD_IIR1_4_SEL, 0x00000005},
 557                 {AUD_IIR1_4_SHIFT, 0x00000007},
 558                 {AUD_IIR3_0_SEL, 0x00000007},
 559                 {AUD_IIR3_0_SHIFT, 0x00000000},
 560                 {AUD_DEEMPH0_SRC_SEL, 0x00000011},
 561                 {AUD_DEEMPH0_SHIFT, 0x00000000},
 562                 {AUD_DEEMPH0_G0, 0x00007000},
 563                 {AUD_DEEMPH0_A0, 0x00000000},
 564                 {AUD_DEEMPH0_B0, 0x00000000},
 565                 {AUD_DEEMPH0_A1, 0x00000000},
 566                 {AUD_DEEMPH0_B1, 0x00000000},
 567                 {AUD_DEEMPH1_SRC_SEL, 0x00000011},
 568                 {AUD_DEEMPH1_SHIFT, 0x00000000},
 569                 {AUD_DEEMPH1_G0, 0x00007000},
 570                 {AUD_DEEMPH1_A0, 0x00000000},
 571                 {AUD_DEEMPH1_B0, 0x00000000},
 572                 {AUD_DEEMPH1_A1, 0x00000000},
 573                 {AUD_DEEMPH1_B1, 0x00000000},
 574                 {AUD_OUT0_SEL, 0x0000003F},
 575                 {AUD_OUT1_SEL, 0x0000003F},
 576                 {AUD_DMD_RA_DDS, 0x00F5C285},
 577                 {AUD_PLL_INT, 0x0000001E},
 578                 {AUD_PLL_DDS, 0x00000000},
 579                 {AUD_PLL_FRAC, 0x0000E542},
 580                 {AUD_RATE_ADJ1, 0x00000100},
 581                 {AUD_RATE_ADJ2, 0x00000200},
 582                 {AUD_RATE_ADJ3, 0x00000300},
 583                 {AUD_RATE_ADJ4, 0x00000400},
 584                 {AUD_RATE_ADJ5, 0x00000500},
 585                 {AUD_RATE_THRES_DMD, 0x000000C0},
 586                 { /* end of list */ },
 587         };
 588
 589         static const struct rlist a2_deemph50[] = {
 590                 {AUD_DEEMPH0_G0, 0x00000380},
 591                 {AUD_DEEMPH1_G0, 0x00000380},
 592                 {AUD_DEEMPHGAIN_R, 0x000011e1},
 593                 {AUD_DEEMPHNUMER1_R, 0x0002a7bc},
 594                 {AUD_DEEMPHNUMER2_R, 0x0003023c},
 595                 { /* end of list */ },
 596         };
 597
 598         set_audio_start(core, SEL_A2);
 599         switch (core->tvaudio) {
 600         case WW_BG:
 601                 dprintk("%s PAL-BG A1/2 (status: known-good)\n", __FUNCTION__);
 602                 set_audio_registers(core, a2_bgdk_common);
 603                 set_audio_registers(core, a2_bg);
 604                 set_audio_registers(core, a2_deemph50);
 605                 break;
 606         case WW_DK:
 607                 dprintk("%s PAL-DK A1/2 (status: known-good)\n", __FUNCTION__);
 608                 set_audio_registers(core, a2_bgdk_common);
 609                 set_audio_registers(core, a2_dk);
 610                 set_audio_registers(core, a2_deemph50);
 611                 break;
 612         case WW_I:
 613                 dprintk("%s PAL-I A1 (status: known-good)\n", __FUNCTION__);
 614                 set_audio_registers(core, a1_i);
 615                 set_audio_registers(core, a2_deemph50);
 616                 break;
 617         case WW_L:
 618                 dprintk("%s AM-L (status: devel)\n", __FUNCTION__);
 619                 set_audio_registers(core, am_l);
 620                 break;
 621         default:
 622                 dprintk("%s Warning: wrong value\n", __FUNCTION__);
 623                 return;
 624                 break;
 625         };
 626
 627         mode |= EN_FMRADIO_EN_RDS | EN_DMTRX_SUMDIFF;
 628         set_audio_finish(core, mode);
 629 }
 630
 631 static void set_audio_standard_EIAJ(struct cx88_core *core)
 632 {
 633         static const struct rlist eiaj[] = {
 634                 /* TODO: eiaj register settings are not there yet ... */
 635
 636                 { /* end of list */ },
 637         };
 638         dprintk("%s (status: unknown)\n", __FUNCTION__);
 639
 640         set_audio_start(core, SEL_EIAJ);
 641         set_audio_registers(core, eiaj);
 642         set_audio_finish(core, EN_EIAJ_AUTO_STEREO);
 643 }
 644
 645 static void set_audio_standard_FM(struct cx88_core *core,
 646                                   enum cx88_deemph_type deemph)
 647 {
 648         static const struct rlist fm_deemph_50[] = {
 649                 {AUD_DEEMPH0_G0, 0x0C45},
 650                 {AUD_DEEMPH0_A0, 0x6262},
 651                 {AUD_DEEMPH0_B0, 0x1C29},
 652                 {AUD_DEEMPH0_A1, 0x3FC66},
 653                 {AUD_DEEMPH0_B1, 0x399A},
 654
 655                 {AUD_DEEMPH1_G0, 0x0D80},
 656                 {AUD_DEEMPH1_A0, 0x6262},
 657                 {AUD_DEEMPH1_B0, 0x1C29},
 658                 {AUD_DEEMPH1_A1, 0x3FC66},
 659                 {AUD_DEEMPH1_B1, 0x399A},
 660
 661                 {AUD_POLYPH80SCALEFAC, 0x0003},
 662                 { /* end of list */ },
 663         };
 664         static const struct rlist fm_deemph_75[] = {
 665                 {AUD_DEEMPH0_G0, 0x091B},
 666                 {AUD_DEEMPH0_A0, 0x6B68},
 667                 {AUD_DEEMPH0_B0, 0x11EC},
 668                 {AUD_DEEMPH0_A1, 0x3FC66},
 669                 {AUD_DEEMPH0_B1, 0x399A},
 670
 671                 {AUD_DEEMPH1_G0, 0x0AA0},
 672                 {AUD_DEEMPH1_A0, 0x6B68},
 673                 {AUD_DEEMPH1_B0, 0x11EC},
 674                 {AUD_DEEMPH1_A1, 0x3FC66},
 675                 {AUD_DEEMPH1_B1, 0x399A},
 676
 677                 {AUD_POLYPH80SCALEFAC, 0x0003},
 678                 { /* end of list */ },
 679         };
 680
 681         /* It is enough to leave default values? */
 682         static const struct rlist fm_no_deemph[] = {
 683
 684                 {AUD_POLYPH80SCALEFAC, 0x0003},
 685                 { /* end of list */ },
 686         };
 687
 688         dprintk("%s (status: unknown)\n", __FUNCTION__);
 689         set_audio_start(core, SEL_FMRADIO);
 690
 691         switch (deemph) {
 692         case FM_NO_DEEMPH:
 693                 set_audio_registers(core, fm_no_deemph);
 694                 break;
 695
 696         case FM_DEEMPH_50:
 697                 set_audio_registers(core, fm_deemph_50);
 698                 break;
 699
 700         case FM_DEEMPH_75:
 701                 set_audio_registers(core, fm_deemph_75);
 702                 break;
 703         }
 704
 705         set_audio_finish(core, EN_FMRADIO_AUTO_STEREO);
 706 }
 707
 708 /* ----------------------------------------------------------- */
 709
 710 static int cx88_detect_nicam(struct cx88_core *core)
 711 {
 712         int i, j = 0;
 713
 714         dprintk("start nicam autodetect.\n");
 715
 716         for (i = 0; i < 6; i++) {
 717                 /* if bit1=1 then nicam is detected */
 718                 j += ((cx_read(AUD_NICAM_STATUS2) & 0x02) >> 1);
 719
 720                 if (j == 1) {
 721                         dprintk("nicam is detected.\n");
 722                         return 1;
 723                 }
 724
 725                 /* wait a little bit for next reading status */
 726                 msleep(10);
 727         }
 728
 729         dprintk("nicam is not detected.\n");
 730         return 0;
 731 }
 732
 733 void cx88_set_tvaudio(struct cx88_core *core)
 734 {
 735         switch (core->tvaudio) {
 736         case WW_BTSC:
 737                 set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
 738                 break;
 739         case WW_BG:
 740         case WW_DK:
 741         case WW_I:
 742         case WW_L:
 743                 /* prepare all dsp registers */
 744                 set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 745
 746                 /* set nicam mode - otherwise
 747                    AUD_NICAM_STATUS2 contains wrong values */
 748                 set_audio_standard_NICAM(core, EN_NICAM_AUTO_STEREO);
 749                 if (0 == cx88_detect_nicam(core)) {
 750                         /* fall back to fm / am mono */
 751                         set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 752                         core->use_nicam = 0;
 753                 } else {
 754                         core->use_nicam = 1;
 755                 }
 756                 break;
 757         case WW_EIAJ:
 758                 set_audio_standard_EIAJ(core);
 759                 break;
 760         case WW_FM:
 761                 set_audio_standard_FM(core, FM_NO_DEEMPH);
 762                 break;
 763         case WW_NONE:
 764         default:
 765                 printk("%s/0: unknown tv audio mode [%d]\n",
 766                        core->name, core->tvaudio);
 767                 break;
 768         }
 769         return;
 770 }
 771
 772 void cx88_newstation(struct cx88_core *core)
 773 {
 774         core->audiomode_manual = UNSET;
 775 }
 776
 777 void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t)
 778 {
 779         static char *m[] = { "stereo", "dual mono", "mono", "sap" };
 780         static char *p[] = { "no pilot", "pilot c1", "pilot c2", "?" };
 781         u32 reg, mode, pilot;
 782
 783         reg = cx_read(AUD_STATUS);
 784         mode = reg & 0x03;
 785         pilot = (reg >> 2) & 0x03;
 786
 787         if (core->astat != reg)
 788                 dprintk("AUD_STATUS: 0x%x [%s/%s] ctl=%s\n",
 789                         reg, m[mode], p[pilot],
 790                         aud_ctl_names[cx_read(AUD_CTL) & 63]);
 791         core->astat = reg;
 792
 793 /* TODO
 794        Reading from AUD_STATUS is not enough
 795        for auto-detecting sap/dual-fm/nicam.
 796        Add some code here later.
 797 */
 798
 799         return;
 800 }
 801
 802 void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual)
 803 {
 804         u32 ctl = UNSET;
 805         u32 mask = UNSET;
 806
 807         if (manual) {
 808                 core->audiomode_manual = mode;
 809         } else {
 810                 if (UNSET != core->audiomode_manual)
 811                         return;
 812         }
 813         core->audiomode_current = mode;
 814
 815         switch (core->tvaudio) {
 816         case WW_BTSC:
 817                 switch (mode) {
 818                 case V4L2_TUNER_MODE_MONO:
 819                         set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_MONO);
 820                         break;
 821                 case V4L2_TUNER_MODE_LANG1:
 822                         set_audio_standard_BTSC(core, 0, EN_BTSC_AUTO_STEREO);
 823                         break;
 824                 case V4L2_TUNER_MODE_LANG2:
 825                         set_audio_standard_BTSC(core, 1, EN_BTSC_FORCE_SAP);
 826                         break;
 827                 case V4L2_TUNER_MODE_STEREO:
 828                 case V4L2_TUNER_MODE_LANG1_LANG2:
 829                         set_audio_standard_BTSC(core, 0, EN_BTSC_FORCE_STEREO);
 830                         break;
 831                 }
 832                 break;
 833         case WW_BG:
 834         case WW_DK:
 835         case WW_I:
 836         case WW_L:
 837                 if (1 == core->use_nicam) {
 838                         switch (mode) {
 839                         case V4L2_TUNER_MODE_MONO:
 840                         case V4L2_TUNER_MODE_LANG1:
 841                                 set_audio_standard_NICAM(core,
 842                                                          EN_NICAM_FORCE_MONO1);
 843                                 break;
 844                         case V4L2_TUNER_MODE_LANG2:
 845                                 set_audio_standard_NICAM(core,
 846                                                          EN_NICAM_FORCE_MONO2);
 847                                 break;
 848                         case V4L2_TUNER_MODE_STEREO:
 849                         case V4L2_TUNER_MODE_LANG1_LANG2:
 850                                 set_audio_standard_NICAM(core,
 851                                                          EN_NICAM_FORCE_STEREO);
 852                                 break;
 853                         }
 854                 } else {
 855                         if ((core->tvaudio == WW_I) || (core->tvaudio == WW_L)) {
 856                                 /* fall back to fm / am mono */
 857                                 set_audio_standard_A2(core, EN_A2_FORCE_MONO1);
 858                         } else {
 859                                 /* TODO: Add A2 autodection */
 860                                 switch (mode) {
 861                                 case V4L2_TUNER_MODE_MONO:
 862                                 case V4L2_TUNER_MODE_LANG1:
 863                                         set_audio_standard_A2(core,
 864                                                               EN_A2_FORCE_MONO1);
 865                                         break;
 866                                 case V4L2_TUNER_MODE_LANG2:
 867                                         set_audio_standard_A2(core,
 868                                                               EN_A2_FORCE_MONO2);
 869                                         break;
 870                                 case V4L2_TUNER_MODE_STEREO:
 871                                 case V4L2_TUNER_MODE_LANG1_LANG2:
 872                                         set_audio_standard_A2(core,
 873                                                               EN_A2_FORCE_STEREO);
 874                                         break;
 875                                 }
 876                         }
 877                 }
 878                 break;
 879         case WW_FM:
 880                 switch (mode) {
 881                 case V4L2_TUNER_MODE_MONO:
 882                         ctl = EN_FMRADIO_FORCE_MONO;
 883                         mask = 0x3f;
 884                         break;
 885                 case V4L2_TUNER_MODE_STEREO:
 886                         ctl = EN_FMRADIO_AUTO_STEREO;
 887                         mask = 0x3f;
 888                         break;
 889                 }
 890                 break;
 891         }
 892
 893         if (UNSET != ctl) {
 894                 dprintk("cx88_set_stereo: mask 0x%x, ctl 0x%x "
 895                         "[status=0x%x,ctl=0x%x,vol=0x%x]\n",
 896                         mask, ctl, cx_read(AUD_STATUS),
 897                         cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL));
 898                 cx_andor(AUD_CTL, mask, ctl);
 899         }
 900         return;
 901 }
 902
 903 int cx88_audio_thread(void *data)
 904 {
 905         struct cx88_core *core = data;
 906         struct v4l2_tuner t;
 907         u32 mode = 0;
 908
 909         dprintk("cx88: tvaudio thread started\n");
 910         for (;;) {
 911                 msleep_interruptible(1000);
 912                 if (kthread_should_stop())
 913                         break;
 914                 try_to_freeze();
 915
 916                 /* just monitor the audio status for now ... */
 917                 memset(&t, 0, sizeof(t));
 918                 cx88_get_stereo(core, &t);
 919
 920                 if (UNSET != core->audiomode_manual)
 921                         /* manually set, don't do anything. */
 922                         continue;
 923
 924                 /* monitor signal */
 925                 if (t.rxsubchans & V4L2_TUNER_SUB_STEREO)
 926                         mode = V4L2_TUNER_MODE_STEREO;
 927                 else
 928                         mode = V4L2_TUNER_MODE_MONO;
 929                 if (mode == core->audiomode_current)
 930                         continue;
 931
 932                 /* automatically switch to best available mode */
 933                 cx88_set_stereo(core, mode, 0);
 934         }
 935
 936         dprintk("cx88: tvaudio thread exiting\n");
 937         return 0;
 938 }
 939
 940 /* ----------------------------------------------------------- */
 941
 942 EXPORT_SYMBOL(cx88_set_tvaudio);
 943 EXPORT_SYMBOL(cx88_newstation);
 944 EXPORT_SYMBOL(cx88_set_stereo);
 945 EXPORT_SYMBOL(cx88_get_stereo);
 946 EXPORT_SYMBOL(cx88_audio_thread);
 947
 948 /*
 949  * Local variables:
 950  * c-basic-offset: 8
 951  * End:
 952  * 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
 953  */