firmware/drivers/audio/tlv320.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Christian Gmeiner
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "config.h"
  22 #include "logf.h"
  23 #include "system.h"
  24 #include "string.h"
  25 #include "audio.h"
  26
  27 #if CONFIG_I2C == I2C_COLDFIRE
  28 #include "i2c-coldfire.h"
  29 #elif CONFIG_I2C == I2C_DM320
  30 #include "i2c-dm320.h"
  31 #endif
  32 #include "audiohw.h"
  33
  34 const struct sound_settings_info audiohw_settings[] = {
  35     [SOUND_VOLUME]        = {"dB", 0,  1, -73,   6, -20},
  36     /* HAVE_SW_TONE_CONTROLS */
  37     [SOUND_BASS]          = {"dB", 0,  1, -24,  24,   0},
  38     [SOUND_TREBLE]        = {"dB", 0,  1, -24,  24,   0},
  39     [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},
  40     [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},
  41     [SOUND_STEREO_WIDTH]  = {"%",  0,  5,   0, 250, 100},
  42 #ifdef HAVE_RECORDING
  43     [SOUND_LEFT_GAIN]     = {"dB", 1,  1,   0,  31,  23},
  44     [SOUND_RIGHT_GAIN]    = {"dB", 1,  1,   0,  31,  23},
  45     [SOUND_MIC_GAIN]      = {"dB", 1,  1,   0,   1,   1},
  46 #endif
  47 };
  48
  49 /* convert tenth of dB volume (-840..0) to master volume register value */
  50 int tenthdb2master(int db)
  51 {
  52     /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
  53     /* 1111111 == +6dB  (0x7f) */
  54     /* 1111001 == 0dB   (0x79) */
  55     /* 0110000 == -73dB (0x30) */
  56     /* 0101111 == mute  (0x2f) */
  57
  58     if (db < VOLUME_MIN) {
  59         return 0x2f;
  60     } else {
  61         return((db/10)+73+0x30);
  62     }
  63 }
  64
  65 /* local functions and definations */
  66 #ifndef CREATIVE_ZVx
  67 #define TLV320_ADDR 0x34
  68 #else
  69 #define TLV320_ADDR 0x1A
  70 #endif
  71
  72 struct tlv320_info
  73 {
  74     int vol_l;
  75     int vol_r;
  76 } tlv320;
  77
  78 /* Shadow registers */
  79 unsigned tlv320_regs[0xf];
  80
  81 static void tlv320_write_reg(unsigned reg, unsigned value)
  82 {
  83     unsigned char data[2];
  84
  85     /* The register address is the high 7 bits and the data the low 9 bits */
  86     data[0] = (reg << 1) | ((value >> 8) & 1);
  87     data[1] = value;
  88
  89 #if CONFIG_I2C == I2C_COLDFIRE
  90     if (i2c_write(I2C_IFACE_0, TLV320_ADDR, data, 2) != 2)
  91 #elif CONFIG_I2C == I2C_DM320
  92     if (i2c_write(TLV320_ADDR, data, 2) != 0)
  93 #else
  94     #warning Implement tlv320_write_reg()
  95 #endif
  96     {
  97         logf("tlv320 error reg=0x%x", reg);
  98         return;
  99     }
 100
 101     tlv320_regs[reg] = value;
 102 }
 103
 104 static void audiohw_mute(bool mute)
 105 {
 106     unsigned value_dap = tlv320_regs[REG_DAP];
 107     unsigned value_l, value_r;
 108
 109     if (mute)
 110     {
 111         value_l = LHV_LHV(HEADPHONE_MUTE);
 112         value_r = RHV_RHV(HEADPHONE_MUTE);
 113         value_dap |= DAP_DACM;
 114     }
 115     else
 116     {
 117         value_l = LHV_LHV(tlv320.vol_l);
 118         value_r = RHV_RHV(tlv320.vol_r);
 119         if (value_l > HEADPHONE_MUTE || value_r > HEADPHONE_MUTE)
 120             value_dap &= ~DAP_DACM;
 121     }
 122
 123     tlv320_write_reg(REG_LHV, LHV_LZC | value_l);
 124     tlv320_write_reg(REG_RHV, RHV_RZC | value_r);
 125     tlv320_write_reg(REG_DAP, value_dap);
 126 }
 127
 128 /* public functions */
 129
 130 /**
 131  * Init our tlv with default values
 132  */
 133 void audiohw_init(void)
 134 {
 135     logf("TLV320 init");
 136     memset(tlv320_regs, 0, sizeof(tlv320_regs));
 137
 138     /* Initialize all registers */
 139
 140     /* All ON except OUT, ADC, MIC and LINE */
 141     tlv320_write_reg(REG_PC, PC_OUT | PC_ADC | PC_MIC | PC_LINE);
 142 #ifdef HAVE_RECORDING
 143     audiohw_set_recvol(0, 0, AUDIO_GAIN_MIC);
 144     audiohw_set_recvol(0, 0, AUDIO_GAIN_LINEIN);
 145 #endif
 146     audiohw_mute(true);
 147     tlv320_write_reg(REG_AAP, AAP_DAC | AAP_MICM);
 148     tlv320_write_reg(REG_DAP, 0x00);  /* No deemphasis */
 149 #ifndef CREATIVE_ZVx
 150     tlv320_write_reg(REG_DAIF, DAIF_IWL_16 | DAIF_FOR_I2S);
 151 #else
 152     tlv320_write_reg(REG_DAIF, DAIF_IWL_32 | DAIF_FOR_DSP);
 153 #endif
 154     tlv320_write_reg(REG_DIA, DIA_ACT);
 155     audiohw_set_frequency(-1); /* default */
 156 }
 157
 158 /**
 159  * Switch outputs ON
 160  */
 161 void audiohw_postinit(void)
 162 {
 163     /* All ON except ADC, MIC and LINE */
 164     sleep(HZ);
 165     tlv320_write_reg(REG_PC, PC_ADC | PC_MIC | PC_LINE);
 166     sleep(HZ/4);
 167     audiohw_mute(false);
 168 }
 169
 170 /**
 171  * Sets internal sample rate for DAC and ADC relative to MCLK
 172  * Selection for frequency:
 173  * Fs:        tlv:   with:
 174  * 11025: 0 = MCLK/2 MCLK/2  SCLK, LRCK: Audio Clk / 16
 175  * 22050: 0 = MCLK/2 MCLK    SCLK, LRCK: Audio Clk / 8
 176  * 44100: 1 = MCLK   MCLK    SCLK, LRCK: Audio Clk / 4 (default)
 177  * 88200: 2 = MCLK*2 MCLK    SCLK, LRCK: Audio Clk / 2
 178  */
 179 void audiohw_set_frequency(int fsel)
 180 {
 181     /* All rates available for 11.2896MHz besides 8.021 */
 182     static const unsigned char values_src[HW_NUM_FREQ] =
 183     {
 184         HW_HAVE_11_([HW_FREQ_11] = (0x8 << 2) | SRC_CLKIN,)
 185         HW_HAVE_22_([HW_FREQ_22] = (0x8 << 2) | SRC_CLKIN,)
 186         HW_HAVE_44_([HW_FREQ_44] = (0x8 << 2),)
 187         HW_HAVE_88_([HW_FREQ_88] = (0xf << 2),)
 188     };
 189
 190     unsigned value_dap, value_pc;
 191
 192     if ((unsigned)fsel >= HW_NUM_FREQ)
 193         fsel = HW_FREQ_DEFAULT;
 194
 195     /* Temporarily turn off the DAC and ADC before switching sample
 196        rates or they don't choose their filters correctly */
 197     value_dap = tlv320_regs[REG_DAP];
 198     value_pc = tlv320_regs[REG_PC];
 199
 200     tlv320_write_reg(REG_DAP, value_dap | DAP_DACM);
 201     tlv320_write_reg(REG_PC,  value_pc | PC_DAC | PC_ADC);
 202     tlv320_write_reg(REG_SRC, values_src[fsel]);
 203     tlv320_write_reg(REG_PC,  value_pc | PC_DAC);
 204     tlv320_write_reg(REG_PC,  value_pc);
 205     tlv320_write_reg(REG_DAP, value_dap);
 206 }
 207
 208 /**
 209  * Sets left and right headphone volume
 210  *
 211  * Left & Right: 48 .. 121 .. 127 => Volume -73dB (mute) .. +0 dB .. +6 dB
 212  */
 213 void audiohw_set_headphone_vol(int vol_l, int vol_r)
 214 {
 215     unsigned value_dap = tlv320_regs[REG_DAP];
 216     unsigned value_dap_last = value_dap;
 217     unsigned value_l = LHV_LHV(vol_l);
 218     unsigned value_r = RHV_RHV(vol_r);
 219
 220     /* keep track of current setting */
 221     tlv320.vol_l = vol_l;
 222     tlv320.vol_r = vol_r;
 223
 224     if (value_l > HEADPHONE_MUTE || value_r > HEADPHONE_MUTE)
 225         value_dap &= ~DAP_DACM;
 226     else
 227         value_dap |= DAP_DACM;
 228
 229     /* update */
 230     tlv320_write_reg(REG_LHV, LHV_LZC | value_l);
 231     tlv320_write_reg(REG_RHV, RHV_RZC | value_r);
 232     if (value_dap != value_dap_last)
 233         tlv320_write_reg(REG_DAP, value_dap);
 234 }
 235
 236 /**
 237  * Set recording volume
 238  *
 239  * Line in   : 0 .. 31 => Volume -34.5 .. +12 dB
 240  * Mic (left): 0 ..  1 => Volume  +0,     +20 dB
 241  *
 242  */
 243 #ifdef HAVE_RECORDING
 244 void audiohw_set_recvol(int left, int right, int type)
 245 {
 246     if (type == AUDIO_GAIN_MIC)
 247     {
 248         unsigned value_aap = tlv320_regs[REG_AAP];
 249
 250         if (left)
 251             value_aap |= AAP_MICB;  /* Enable mic boost (20dB) */
 252         else
 253             value_aap &= ~AAP_MICB;
 254
 255         tlv320_write_reg(REG_AAP, value_aap);
 256     }
 257     else if (type == AUDIO_GAIN_LINEIN)
 258     {
 259         tlv320_write_reg(REG_LLIV, LLIV_LIV(left));
 260         tlv320_write_reg(REG_RLIV, RLIV_RIV(right));
 261     }
 262 }
 263 #endif
 264
 265 /* Nice shutdown of TLV320 codec */
 266 void audiohw_close(void)
 267 {
 268     audiohw_mute(true);
 269     sleep(HZ/8);
 270
 271     tlv320_write_reg(REG_PC, PC_OFF | PC_CLK | PC_OSC | PC_OUT |
 272         PC_DAC | PC_ADC | PC_MIC | PC_LINE);  /* All OFF */
 273 }
 274
 275 #ifdef HAVE_RECORDING
 276 void audiohw_enable_recording(bool source_mic)
 277 {
 278     unsigned value_aap, value_pc;
 279
 280     if (source_mic)
 281     {
 282         /* select MIC and enable mic boost (20 dB) */
 283         value_aap = AAP_DAC | AAP_INSEL | AAP_MICB;
 284         value_pc = PC_LINE;                 /* power down LINE */
 285     }
 286     else
 287     {
 288         value_aap = AAP_DAC | AAP_MICM;
 289         value_pc = PC_MIC;                  /* power down MIC */
 290     }
 291
 292     tlv320_write_reg(REG_PC, value_pc);
 293     tlv320_write_reg(REG_AAP, value_aap);
 294 }
 295
 296 void audiohw_disable_recording(void)
 297 {
 298     unsigned value_pc = tlv320_regs[REG_PC];
 299     unsigned value_aap = tlv320_regs[REG_AAP];
 300
 301     value_aap |= AAP_MICM;                 /* mute MIC */
 302     tlv320_write_reg(REG_PC, value_aap);
 303
 304     value_pc |= PC_ADC | PC_MIC | PC_LINE; /* ADC, MIC and LINE off */
 305     tlv320_write_reg(REG_PC, value_pc);
 306 }
 307 #endif
 308
 309 void audiohw_set_monitor(bool enable)
 310 {
 311     unsigned value_aap, value_pc;
 312
 313     if (enable)
 314     {
 315         /* Keep DAC on to allow mixing of voice with analog audio */
 316         value_aap = AAP_DAC | AAP_BYPASS | AAP_MICM;
 317         value_pc  = PC_ADC | PC_MIC; /* ADC and MIC off */
 318     }
 319     else
 320     {
 321         value_aap = AAP_DAC | AAP_MICM;
 322         value_pc  = PC_ADC | PC_MIC | PC_LINE; /* ADC, MIC and LINE off */
 323     }
 324
 325     tlv320_write_reg(REG_AAP, value_aap);
 326     tlv320_write_reg(REG_PC,  value_pc);
 327 }