firmware/drivers/audio/as3514.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Driver for AS3514 and compatible audio codec
  11  *
  12  * Copyright (c) 2007 Daniel Ankers
  13  * Copyright (c) 2007 Christian Gmeiner
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24 #include "cpu.h"
  25 #include "debug.h"
  26 #include "system.h"
  27 #include "audio.h"
  28 #include "sound.h"
  29
  30 #include "audiohw.h"
  31 #include "i2s.h"
  32 #include "ascodec.h"
  33
  34 /*
  35  * This drivers supports:
  36  * as3514 , as used in the PP targets
  37  * as3517 , as used in the as3525 targets
  38  * as3543 , as used in the as3525v2 targets
  39  */
  40
  41 #if CONFIG_CPU == AS3525
  42 /* AMS Sansas based on the AS3525 use the LINE2 input for the analog radio
  43    signal instead of LINE1 */
  44 #define AS3514_LINE_IN_R AS3514_LINE_IN2_R
  45 #define AS3514_LINE_IN_L AS3514_LINE_IN2_L
  46 #define ADC_R_ADCMUX_LINE_IN ADC_R_ADCMUX_LINE_IN2
  47 #define AUDIOSET1_LIN_on AUDIOSET1_LIN2_on
  48
  49 #elif CONFIG_CPU == AS3525v2
  50 /* There is only 1 pair of registers on AS3543, the line input is selectable in
  51    LINE_IN_R register */
  52 #define AS3514_LINE_IN_R AS3514_LINE_IN1_R
  53 #define AS3514_LINE_IN_L AS3514_LINE_IN1_L
  54 #define ADC_R_ADCMUX_LINE_IN ADC_R_ADCMUX_LINE_IN2
  55 #define AUDIOSET1_LIN_on AUDIOSET1_LIN1_on
  56
  57 #else   /* PP use line1 */
  58
  59 #define AS3514_LINE_IN_R AS3514_LINE_IN1_R
  60 #define AS3514_LINE_IN_L AS3514_LINE_IN1_L
  61 #define ADC_R_ADCMUX_LINE_IN ADC_R_ADCMUX_LINE_IN1
  62 #define AUDIOSET1_LIN_on AUDIOSET1_LIN1_on
  63
  64 #endif
  65
  66 const struct sound_settings_info audiohw_settings[] = {
  67     [SOUND_VOLUME]        = {"dB",   0,   1, -73,   6, -25},
  68     /* HAVE_SW_TONE_CONTROLS */
  69     [SOUND_BASS]          = {"dB",   0,   1, -24,  24,   0},
  70     [SOUND_TREBLE]        = {"dB",   0,   1, -24,  24,   0},
  71     [SOUND_BALANCE]       = {"%",    0,   1,-100, 100,   0},
  72     [SOUND_CHANNELS]      = {"",     0,   1,   0,   5,   0},
  73     [SOUND_STEREO_WIDTH]  = {"%",    0,   5,   0, 250, 100},
  74 #ifdef HAVE_RECORDING
  75     [SOUND_MIC_GAIN]      = {"dB",   1,   1,   0,  39,  23},
  76     [SOUND_LEFT_GAIN]     = {"dB",   1,   1,   0,  31,  23},
  77     [SOUND_RIGHT_GAIN]    = {"dB",   1,   1,   0,  31,  23},
  78 #endif
  79 };
  80
  81 /* Shadow registers */
  82 static uint8_t as3514_regs[AS3514_NUM_AUDIO_REGS]; /* 8-bit registers */
  83
  84 /*
  85  * little helper method to set register values.
  86  * With the help of as3514_regs, we minimize i2c
  87  * traffic.
  88  */
  89 static void as3514_write(unsigned int reg, unsigned int value)
  90 {
  91     if (ascodec_write(reg, value) != 2)
  92     {
  93         DEBUGF("as3514 error reg=0x%02x", reg);
  94     }
  95
  96     if (reg < ARRAYLEN(as3514_regs))
  97     {
  98         as3514_regs[reg] = value;
  99     }
 100     else
 101     {
 102         DEBUGF("as3514 error reg=0x%02x", reg);
 103     }
 104 }
 105
 106 /* Helpers to set/clear bits */
 107 static void as3514_set(unsigned int reg, unsigned int bits)
 108 {
 109     as3514_write(reg, as3514_regs[reg] | bits);
 110 }
 111
 112 static void as3514_clear(unsigned int reg, unsigned int bits)
 113 {
 114     as3514_write(reg, as3514_regs[reg] & ~bits);
 115 }
 116
 117 static void as3514_write_masked(unsigned int reg, unsigned int bits,
 118                                 unsigned int mask)
 119 {
 120     as3514_write(reg, (as3514_regs[reg] & ~mask) | (bits & mask));
 121 }
 122
 123 /* convert tenth of dB volume to master volume register value */
 124 int tenthdb2master(int db)
 125 {
 126     /* +6 to -73.5dB in 1.5dB steps == 53 levels */
 127     if (db < VOLUME_MIN) {
 128         return 0x0;
 129     } else if (db >= VOLUME_MAX) {
 130         return 0x35;
 131     } else {
 132         return((db-VOLUME_MIN)/15); /* VOLUME_MIN is negative */
 133     }
 134 }
 135
 136 int sound_val2phys(int setting, int value)
 137 {
 138     int result;
 139
 140     switch(setting)
 141     {
 142 #if defined(HAVE_RECORDING)
 143     case SOUND_LEFT_GAIN:
 144     case SOUND_RIGHT_GAIN:
 145     case SOUND_MIC_GAIN:
 146         result = (value - 23) * 15;
 147         break;
 148 #endif
 149
 150     default:
 151         result = value;
 152         break;
 153     }
 154
 155     return result;
 156 }
 157
 158 /*
 159  * Initialise the PP I2C and I2S.
 160  */
 161 void audiohw_preinit(void)
 162 {
 163     unsigned int i;
 164
 165     /* read all reg values */
 166     for (i = 0; i < ARRAYLEN(as3514_regs); i++)
 167     {
 168         as3514_regs[i] = ascodec_read(i);
 169     }
 170
 171     /* Set ADC off, mixer on, DAC on, line out off, line in off, mic off */
 172
 173     /* Turn on SUM, DAC */
 174     as3514_write(AS3514_AUDIOSET1, AUDIOSET1_DAC_on | AUDIOSET1_SUM_on);
 175
 176 #ifdef HAVE_AS3543
 177     as3514_write(AS3514_AUDIOSET2, AUDIOSET2_HPH_QUALITY_LOW_POWER);
 178 #else
 179     /* Set BIAS on, DITH off, AGC off, IBR_DAC max reduction, LSP_LP on,
 180        IBR_LSP max reduction (50%), taken from c200v2 OF
 181      */
 182     as3514_write(AS3514_AUDIOSET2, AUDIOSET2_IBR_LSP_50 | AUDIOSET2_LSP_LP |
 183             AUDIOSET2_IBR_DAC_50 | AUDIOSET2_AGC_off | AUDIOSET2_DITH_off );
 184 #endif
 185
 186 /* AMS Sansas based on the AS3525 need HPCM enabled, otherwise they output the
 187    L-R signal on both L and R headphone outputs instead of normal stereo.
 188    Turning it off saves a little power on targets that don't need it. */
 189 #if (CONFIG_CPU == AS3525)
 190     /* Set HPCM on, ZCU off, reduce bias current, settings taken from c200v2 OF
 191      */
 192     as3514_write(AS3514_AUDIOSET3, AUDIOSET3_IBR_HPH | AUDIOSET3_ZCU_off);
 193 #else
 194     /* TODO: check if AS3525 settings save power on e200v1 or as3525v2 */
 195     /* Set HPCM off, ZCU on */
 196     as3514_write(AS3514_AUDIOSET3, AUDIOSET3_HPCM_off);
 197 #endif
 198
 199 #ifdef HAVE_AS3543
 200     as3514_write(AS3543_DAC_IF, AS3543_DAC_INT_PLL);
 201     as3514_set(AS3514_LINE_IN1_R, LINE_IN_R_LINE_SELECT); /* Line 2 */
 202 #else
 203     /* Mute and disable speaker */
 204     as3514_write(AS3514_LSP_OUT_R, LSP_OUT_R_SP_OVC_TO_256MS | 0x00);
 205     as3514_write(AS3514_LSP_OUT_L, LSP_OUT_L_SP_MUTE | 0x00);
 206 #endif
 207
 208 #ifdef HAVE_AS3543
 209     as3514_write(AS3514_HPH_OUT_R, (0<<7) /* out */ | HPH_OUT_R_HP_OUT_SUM |
 210                                   0x00);
 211 #else
 212     /* Set headphone over-current to 0, Min volume */
 213     as3514_write(AS3514_HPH_OUT_R,
 214                  HPH_OUT_R_HP_OVC_TO_0MS | 0x00);
 215 #endif
 216     /* Headphone ON, MUTE, Min volume */
 217     as3514_write(AS3514_HPH_OUT_L,
 218                  HPH_OUT_L_HP_ON | HPH_OUT_L_HP_MUTE | 0x00);
 219
 220 #ifdef PHILIPS_SA9200
 221     /* LRCK 8-23kHz (there are audible clicks while reading the ADC otherwise) */
 222     as3514_write(AS3514_PLLMODE, PLLMODE_LRCK_8_23);
 223 #else
 224     /* LRCK 24-48kHz */
 225     as3514_write(AS3514_PLLMODE, PLLMODE_LRCK_24_48);
 226 #endif
 227
 228     /* DAC_Mute_off */
 229     as3514_set(AS3514_DAC_L, DAC_L_DAC_MUTE_off);
 230
 231     /* M1_Sup_off */
 232     as3514_set(AS3514_MIC1_L, MIC1_L_M1_SUP_off);
 233 #ifndef HAVE_AS3543
 234     /* M2_Sup_off */
 235     as3514_set(AS3514_MIC2_L, MIC2_L_M2_SUP_off);
 236 #endif
 237 }
 238
 239 static void audiohw_mute(bool mute)
 240 {
 241     if (mute) {
 242         as3514_set(AS3514_HPH_OUT_L, HPH_OUT_L_HP_MUTE);
 243     } else {
 244         as3514_clear(AS3514_HPH_OUT_L, HPH_OUT_L_HP_MUTE);
 245     }
 246 }
 247
 248 void audiohw_postinit(void)
 249 {
 250     /* wait until outputs have stabilized */
 251     sleep(HZ/4);
 252
 253 #ifdef CPU_PP
 254     ascodec_suppressor_on(false);
 255 #endif
 256
 257     audiohw_mute(false);
 258 }
 259
 260 void audiohw_set_master_vol(int vol_l, int vol_r)
 261 {
 262     unsigned int hph_r, hph_l;
 263     unsigned int mix_l, mix_r;
 264
 265     if(vol_l == 0 && vol_r == 0)
 266     {
 267         audiohw_mute(true);
 268         return;
 269     }
 270
 271     /* We combine the mixer channel volume range with the headphone volume
 272        range - keep first stage as loud as possible */
 273     if (vol_r <= 0x16) {
 274         mix_r = vol_r;
 275         hph_r = 0;
 276     } else {
 277         mix_r = 0x16;
 278         hph_r = vol_r - 0x16;
 279     }
 280
 281     if (vol_l <= 0x16) {
 282         mix_l = vol_l;
 283         hph_l = 0;
 284     } else {
 285         mix_l = 0x16;
 286         hph_l = vol_l - 0x16;
 287     }
 288
 289     as3514_write_masked(AS3514_DAC_R, mix_r, AS3514_VOL_MASK);
 290     as3514_write_masked(AS3514_DAC_L, mix_l, AS3514_VOL_MASK);
 291 #if defined(HAVE_RECORDING) || defined(HAVE_FMRADIO_IN)
 292     as3514_write_masked(AS3514_LINE_IN_R, mix_r, AS3514_VOL_MASK);
 293     as3514_write_masked(AS3514_LINE_IN_L, mix_l, AS3514_VOL_MASK);
 294 #endif
 295     as3514_write_masked(AS3514_HPH_OUT_R, hph_r, AS3514_VOL_MASK);
 296     as3514_write_masked(AS3514_HPH_OUT_L, hph_l, AS3514_VOL_MASK);
 297
 298     audiohw_mute(false);
 299 }
 300
 301 void audiohw_set_lineout_vol(int vol_l, int vol_r)
 302 {
 303     as3514_write_masked(AS3514_LINE_OUT_R, vol_r, AS3514_VOL_MASK);
 304     as3514_write_masked(AS3514_LINE_OUT_L, vol_l, AS3514_VOL_MASK);
 305 }
 306
 307 /* Nice shutdown of AS3514 audio codec */
 308 void audiohw_close(void)
 309 {
 310     /* mute headphones */
 311     audiohw_mute(true);
 312
 313 #ifdef CPU_PP
 314     ascodec_suppressor_on(true);
 315 #endif
 316
 317     /* turn on common */
 318     as3514_clear(AS3514_AUDIOSET3, AUDIOSET3_HPCM_off);
 319
 320     /* turn off everything */
 321     as3514_clear(AS3514_HPH_OUT_L, HPH_OUT_L_HP_ON);
 322     as3514_write(AS3514_AUDIOSET1, 0x0);
 323
 324     /* Allow caps to discharge */
 325     sleep(HZ/4);
 326 }
 327
 328 void audiohw_set_frequency(int fsel)
 329 {
 330     (void)fsel;
 331 }
 332
 333 #if defined(HAVE_RECORDING)
 334 void audiohw_enable_recording(bool source_mic)
 335 {
 336     if (source_mic) {
 337         /* ADCmux = Stereo Microphone */
 338         as3514_write_masked(AS3514_ADC_R, ADC_R_ADCMUX_ST_MIC,
 339                             ADC_R_ADCMUX);
 340
 341         /* MIC1_on, others off */
 342         as3514_write_masked(AS3514_AUDIOSET1, AUDIOSET1_MIC1_on,
 343                             AUDIOSET1_INPUT_MASK);
 344
 345 #if CONFIG_CPU == AS3525v2
 346         /* Enable supply */
 347         as3514_clear(AS3514_MIC1_L, MIC1_L_M1_SUP_off);
 348 #endif
 349
 350         /* M1_AGC_off */
 351         as3514_clear(AS3514_MIC1_R, MIC1_R_M1_AGC_off);
 352     } else {
 353         /* ADCmux = Line_IN1 or Line_IN2 */
 354         as3514_write_masked(AS3514_ADC_R, ADC_R_ADCMUX_LINE_IN,
 355                             ADC_R_ADCMUX);
 356
 357         /* LIN1_or LIN2 on, rest off */
 358         as3514_write_masked(AS3514_AUDIOSET1, AUDIOSET1_LIN_on,
 359                             AUDIOSET1_INPUT_MASK);
 360
 361 #if CONFIG_CPU == AS3525v2
 362         /* Disable supply */
 363         as3514_set(AS3514_MIC1_L, MIC1_L_M1_SUP_off);
 364 #endif
 365     }
 366
 367     /* ADC_Mute_off */
 368     as3514_set(AS3514_ADC_L, ADC_L_ADC_MUTE_off);
 369     /* ADC_on */
 370     as3514_set(AS3514_AUDIOSET1, AUDIOSET1_ADC_on);
 371 }
 372
 373 void audiohw_disable_recording(void)
 374 {
 375     /* ADC_Mute_on */
 376     as3514_clear(AS3514_ADC_L, ADC_L_ADC_MUTE_off);
 377
 378     /* ADC_off, all input sources off */
 379     as3514_clear(AS3514_AUDIOSET1, AUDIOSET1_ADC_on | AUDIOSET1_INPUT_MASK);
 380 }
 381
 382 /**
 383  * Set recording volume
 384  *
 385  * Line in   : 0 .. 23 .. 31 =>
 386                Volume -34.5 .. +00.0 .. +12.0 dB
 387  * Mic (left): 0 .. 23 .. 39 =>
 388  *             Volume -34.5 .. +00.0 .. +24.0 dB
 389  *
 390  */
 391 void audiohw_set_recvol(int left, int right, int type)
 392 {
 393     switch (type)
 394     {
 395     case AUDIO_GAIN_MIC:
 396     {
 397         /* Combine MIC gains seamlessly with ADC levels */
 398         unsigned int mic1_r;
 399
 400         if (left >= 36) {
 401             /* M1_Gain = +40db, ADR_Vol = +7.5dB .. +12.0 dB =>
 402                +19.5 dB .. +24.0 dB */
 403             left -= 8;
 404             mic1_r = MIC1_R_M1_GAIN_40DB;
 405         } else if (left >= 32) {
 406             /* M1_Gain = +34db, ADR_Vol = +7.5dB .. +12.0 dB =>
 407                +13.5 dB .. +18.0 dB */
 408             left -= 4;
 409             mic1_r = MIC1_R_M1_GAIN_34DB;
 410         } else {
 411             /* M1_Gain = +28db, ADR_Vol = -34.5dB .. +12.0 dB =>
 412                -34.5 dB .. +12.0 dB */
 413             mic1_r = MIC1_R_M1_GAIN_28DB;
 414         }
 415
 416         right = left;
 417
 418         as3514_write_masked(AS3514_MIC1_R, mic1_r, MIC1_R_M1_GAIN);
 419         break;
 420         }
 421     case AUDIO_GAIN_LINEIN:
 422         break;
 423     default:
 424         return;
 425     }
 426
 427     as3514_write_masked(AS3514_ADC_R, right, AS3514_VOL_MASK);
 428     as3514_write_masked(AS3514_ADC_L, left, AS3514_VOL_MASK);
 429 }
 430 #endif /* HAVE_RECORDING */
 431
 432 #if defined(HAVE_RECORDING) || defined(HAVE_FMRADIO_IN)
 433 /**
 434  * Enable line in analog monitoring
 435  *
 436  */
 437 void audiohw_set_monitor(bool enable)
 438 {
 439     if (enable) {
 440         /* select either LIN1 or LIN2 */
 441         as3514_write_masked(AS3514_AUDIOSET1, AUDIOSET1_LIN_on,
 442                             AUDIOSET1_LIN1_on | AUDIOSET1_LIN2_on);
 443         as3514_set(AS3514_LINE_IN_R, LINE_IN1_R_LI1R_MUTE_off);
 444         as3514_set(AS3514_LINE_IN_L, LINE_IN1_L_LI1L_MUTE_off);
 445
 446 #ifdef HAVE_AS3543
 447         as3514_write_masked(AS3514_HPH_OUT_R,
 448                             HPH_OUT_R_HP_OUT_LINE, HPH_OUT_R_HP_OUT_MASK);
 449 #endif
 450     }
 451     else {
 452         /* turn off both LIN1 and LIN2 */
 453         as3514_clear(AS3514_LINE_IN1_R, LINE_IN1_R_LI1R_MUTE_off);
 454         as3514_clear(AS3514_LINE_IN1_L, LINE_IN1_L_LI1L_MUTE_off);
 455 #ifdef HAVE_AS3543
 456         as3514_write_masked(AS3514_HPH_OUT_R,
 457                             HPH_OUT_R_HP_OUT_SUM, HPH_OUT_R_HP_OUT_MASK);
 458 #else
 459         as3514_clear(AS3514_LINE_IN2_R, LINE_IN2_R_LI2R_MUTE_off);
 460         as3514_clear(AS3514_LINE_IN2_L, LINE_IN2_L_LI2L_MUTE_off);
 461 #endif
 462         as3514_clear(AS3514_AUDIOSET1, AUDIOSET1_LIN1_on | AUDIOSET1_LIN2_on);
 463     }
 464 }
 465 #endif /* HAVE_RECORDING || HAVE_FMRADIO_IN */
 466
 467