firmware/drivers/audio/wm8985.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * All files in this archive are subject to the GNU General Public License.
  11  * See the file COPYING in the source tree root for full license agreement.
  12  *
  13  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  14  * KIND, either express or implied.
  15  *
  16  ****************************************************************************/
  17 #include "logf.h"
  18 #include "system.h"
  19 #include "string.h"
  20 #include "audio.h"
  21
  22 #include "wmcodec.h"
  23 #include "audiohw.h"
  24 #include "i2s.h"
  25
  26 /* Register addresses as per datasheet Rev.4.4 */
  27 #define RESET       0x00
  28 #define PWRMGMT1    0x01
  29 #define PWRMGMT2    0x02
  30 #define PWRMGMT3    0x03
  31 #define AINTFCE     0x04
  32 #define COMPAND     0x05
  33 #define CLKGEN      0x06
  34 #define SRATECTRL   0x07
  35 #define GPIOCTL     0x08
  36 #define JACKDETECT0 0x09
  37 #define DACCTRL     0x0a
  38 #define LDACVOL     0x0b
  39 #define RDACVOL     0x0c
  40 #define JACKDETECT1 0x0d
  41 #define ADCCTL      0x0e
  42 #define LADCVOL     0x0f
  43 #define RADCVOL     0x10
  44
  45 #define EQ1         0x12
  46 #define EQ2         0x13
  47 #define EQ3         0x14
  48 #define EQ4         0x15
  49 #define EQ5         0x16
  50 #define EQ_GAIN_MASK       0x001f
  51 #define EQ_CUTOFF_MASK     0x0060
  52 #define EQ_GAIN_VALUE(x)   (((-x) + 12) & 0x1f)
  53 #define EQ_CUTOFF_VALUE(x) ((((x) - 1) & 0x03) << 5)
  54
  55 #define CLASSDCTL   0x17
  56 #define DACLIMIT1   0x18
  57 #define DACLIMIT2   0x19
  58 #define NOTCH1      0x1b
  59 #define NOTCH2      0x1c
  60 #define NOTCH3      0x1d
  61 #define NOTCH4      0x1e
  62 #define ALCCTL1     0x20
  63 #define ALCCTL2     0x21
  64 #define ALCCTL3     0x22
  65 #define NOISEGATE   0x23
  66 #define PLLN        0x24
  67 #define PLLK1       0x25
  68 #define PLLK2       0x26
  69 #define PLLK3       0x27
  70 #define THREEDCTL   0x29
  71 #define OUT4ADC     0x2a
  72 #define BEEPCTRL    0x2b
  73 #define INCTRL      0x2c
  74 #define LINPGAGAIN  0x2d
  75 #define RINPGAGAIN  0x2e
  76 #define LADCBOOST   0x2f
  77 #define RADCBOOST   0x30
  78 #define OUTCTRL     0x31
  79 #define LOUTMIX     0x32
  80 #define ROUTMIX     0x33
  81 #define LOUT1VOL    0x34
  82 #define ROUT1VOL    0x35
  83 #define LOUT2VOL    0x36
  84 #define ROUT2VOL    0x37
  85 #define OUT3MIX     0x38
  86 #define OUT4MIX     0x39
  87 #define BIASCTL     0x3d
  88
  89 /* Register settings for the supported samplerates: */
  90 #define WM8985_8000HZ      0x4d
  91 #define WM8985_12000HZ     0x61
  92 #define WM8985_16000HZ     0x55
  93 #define WM8985_22050HZ     0x77
  94 #define WM8985_24000HZ     0x79
  95 #define WM8985_32000HZ     0x59
  96 #define WM8985_44100HZ     0x63
  97 #define WM8985_48000HZ     0x41
  98 #define WM8985_88200HZ     0x7f
  99 #define WM8985_96000HZ     0x5d
 100
 101 const struct sound_settings_info audiohw_settings[] = {
 102     [SOUND_VOLUME]        = {"dB", 0,  1, -58,   6, -25},
 103     [SOUND_BASS]          = {"dB", 0,  1, -12,  12,   0},
 104     [SOUND_TREBLE]        = {"dB", 0,  1, -12,  12,   0},
 105     [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},
 106     [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},
 107     [SOUND_STEREO_WIDTH]  = {"%",  0,  5,   0, 250, 100},
 108     [SOUND_LEFT_GAIN]     = {"dB", 1,  1,-128,  96,   0},
 109     [SOUND_RIGHT_GAIN]    = {"dB", 1,  1,-128,  96,   0},
 110     [SOUND_MIC_GAIN]      = {"dB", 1,  1,-128, 108,  16},
 111     [SOUND_BASS_CUTOFF]   = {"",   0,  1,   1,   4,   1},
 112     [SOUND_TREBLE_CUTOFF] = {"",   0,  1,   1,   4,   1},
 113 };
 114
 115 /* shadow registers */
 116 unsigned int eq1_reg;
 117 unsigned int eq5_reg;
 118
 119 /* convert tenth of dB volume (-57..6) to master volume register value */
 120 int tenthdb2master(int db)
 121 {
 122     /* +6 to -57dB in 1dB steps == 64 levels = 6 bits */
 123     /* 0111111 == +6dB  (0x3f) = 63) */
 124     /* 0111001 == 0dB   (0x39) = 57) */
 125     /* 0000001 == -56dB (0x01) = */
 126     /* 0000000 == -57dB (0x00) */
 127
 128     /* 1000000 == Mute (0x40) */
 129
 130     if (db < VOLUME_MIN) {
 131         return 0x40;
 132     } else {
 133         return((db/10)+57);
 134     }
 135 }
 136
 137 /* convert tenth of dB volume (-780..0) to mixer volume register value */
 138 int tenthdb2mixer(int db)
 139 {
 140     if (db < -660)                 /* 1.5 dB steps */
 141         return (2640 - db) / 15;
 142     else if (db < -600)            /* 0.75 dB steps */
 143         return (990 - db) * 2 / 15;
 144     else if (db < -460)            /* 0.5 dB steps */
 145         return (460 - db) / 5;
 146     else                           /* 0.25 dB steps */
 147         return -db * 2 / 5;
 148 }
 149
 150 /* Silently enable / disable audio output */
 151 void audiohw_enable_output(bool enable)
 152 {
 153     if (enable)
 154     {
 155         /* TODO: reset the I2S controller into known state */
 156         //i2s_reset();
 157
 158         /* TODO: Review the power-up sequence to prevent pops (see datasheet) */
 159
 160         wmcodec_write(RESET, 0x1ff);    /*Reset*/
 161
 162         wmcodec_write(PWRMGMT1, 0x2b);
 163         wmcodec_write(PWRMGMT2, 0x180);
 164         wmcodec_write(PWRMGMT3, 0x6f);
 165
 166         wmcodec_write(AINTFCE, 0x10);
 167         wmcodec_write(CLKCTRL, 0x49);
 168
 169         wmcodec_write(OUTCTRL, 1);
 170
 171         /* The iPod can handle multiple frequencies, but fix at 44.1KHz
 172            for now */
 173         audiohw_set_sample_rate(WM8985_44100HZ);
 174
 175         wmcodec_write(LOUTMIX,0x1); /* Enable mixer */
 176         wmcodec_write(ROUTMIX,0x1); /* Enable mixer */
 177         audiohw_mute(0);
 178     } else {
 179         audiohw_mute(1);
 180     }
 181 }
 182
 183 void audiohw_set_master_vol(int vol_l, int vol_r)
 184 {
 185     /* OUT1 */
 186     wmcodec_write(LOUT1VOL, 0x080 | vol_l);
 187     wmcodec_write(ROUT1VOL, 0x180 | vol_r);
 188 }
 189
 190 void audiohw_set_lineout_vol(int vol_l, int vol_r)
 191 {
 192     /* OUT2 */
 193     wmcodec_write(LOUT2VOL, vol_l);
 194     wmcodec_write(ROUT2VOL, 0x100 | vol_r);
 195 }
 196
 197 void audiohw_set_mixer_vol(int channel1, int channel2)
 198 {
 199     (void)channel1;
 200     (void)channel2;
 201 }
 202
 203 void audiohw_set_bass(int value)
 204 {
 205     eq1_reg = (eq1_reg & ~EQ_GAIN_MASK) | EQ_GAIN_VALUE(value);
 206     wmcodec_write(EQ1, 0x100 | eq1_reg);
 207 }
 208
 209 void audiohw_set_bass_cutoff(int value)
 210 {
 211     eq1_reg = (eq1_reg & ~EQ_CUTOFF_MASK) | EQ_CUTOFF_VALUE(value);
 212     wmcodec_write(EQ1, 0x100 | eq1_reg);
 213 }
 214
 215 void audiohw_set_treble(int value)
 216 {
 217     eq5_reg = (eq5_reg & ~EQ_GAIN_MASK) | EQ_GAIN_VALUE(value);
 218     wmcodec_write(EQ5, eq5_reg);
 219 }
 220
 221 void audiohw_set_treble_cutoff(int value)
 222 {
 223     eq5_reg = (eq5_reg & ~EQ_CUTOFF_MASK) | EQ_CUTOFF_VALUE(value);
 224     wmcodec_write(EQ5, eq5_reg);
 225 }
 226
 227 void audiohw_mute(bool mute)
 228 {
 229     if (mute)
 230     {
 231         /* Set DACMU = 1 to soft-mute the audio DACs. */
 232         wmcodec_write(DACCTRL, 0x40);
 233     } else {
 234         /* Set DACMU = 0 to soft-un-mute the audio DACs. */
 235         wmcodec_write(DACCTRL, 0x0);
 236     }
 237 }
 238
 239 /* Nice shutdown of WM8758 codec */
 240 void audiohw_close(void)
 241 {
 242     audiohw_mute(1);
 243
 244     wmcodec_write(PWRMGMT3, 0x0);
 245
 246     wmcodec_write(PWRMGMT1, 0x0);
 247
 248     wmcodec_write(PWRMGMT2, 0x40);
 249 }
 250
 251 /* Change the order of the noise shaper, 5th order is recommended above 32kHz */
 252 void audiohw_set_nsorder(int order)
 253 {
 254     (void)order;
 255 }
 256
 257 /* Note: Disable output before calling this function */
 258 void audiohw_set_sample_rate(int sampling_control)
 259 {
 260     /**** We force 44.1KHz for now. ****/
 261     (void)sampling_control;
 262
 263     /* set clock div */
 264     wmcodec_write(CLKCTRL, 1 | (0 << 2) | (2 << 5));
 265
 266     /* setup PLL for MHZ=11.2896 */
 267     wmcodec_write(PLLN, (1 << 4) | 0x7);
 268     wmcodec_write(PLLK1, 0x21);
 269     wmcodec_write(PLLK2, 0x161);
 270     wmcodec_write(PLLK3, 0x26);
 271
 272     /* set clock div */
 273     wmcodec_write(CLKCTRL, 1 | (1 << 2) | (2 << 5) | (1 << 8));
 274
 275     /* set srate */
 276     wmcodec_write(SRATECTRL, (0 << 1));
 277 }
 278
 279 #ifdef HAVE_RECORDING
 280 void audiohw_enable_recording(bool source_mic)
 281 {
 282     (void)source_mic; /* We only have a line-in (I think) */
 283
 284     /* TODO: reset the I2S controller into known state */
 285     //i2s_reset();
 286
 287     wmcodec_write(RESET, 0x1ff);    /*Reset*/
 288
 289     wmcodec_write(PWRMGMT1, 0x2b);
 290     wmcodec_write(PWRMGMT2, 0x18f);  /* Enable ADC - 0x0c enables left/right PGA input, and 0x03 turns on power to the ADCs */
 291     wmcodec_write(PWRMGMT3, 0x6f);
 292
 293     wmcodec_write(AINTFCE, 0x10);
 294     wmcodec_write(CLKCTRL, 0x49);
 295
 296     wmcodec_write(OUTCTRL, 1);
 297
 298     /* The iPod can handle multiple frequencies, but fix at 44.1KHz
 299        for now */
 300     audiohw_set_sample_rate(WM8985_44100HZ);
 301
 302     wmcodec_write(INCTRL,0x44);  /* Connect L2 and R2 inputs */
 303
 304     /* Set L2/R2_2BOOSTVOL to 0db (bits 4-6) */
 305     /* 000 = disabled
 306        001 = -12dB
 307        010 = -9dB
 308        011 = -6dB
 309        100 = -3dB
 310        101 = 0dB
 311        110 = 3dB
 312        111 = 6dB
 313     */
 314     wmcodec_write(LADCBOOST,0x50);
 315     wmcodec_write(RADCBOOST,0x50);
 316
 317     /* Set L/R input PGA Volume to 0db */
 318     //    wm8758_write(LINPGAVOL,0x3f);
 319     //    wm8758_write(RINPGAVOL,0x13f);
 320
 321     /* Enable monitoring */
 322     wmcodec_write(LOUTMIX,0x17); /* Enable output mixer - BYPL2LMIX @ 0db*/
 323     wmcodec_write(ROUTMIX,0x17); /* Enable output mixer - BYPR2RMIX @ 0db*/
 324
 325     audiohw_mute(0);
 326 }
 327
 328 void audiohw_disable_recording(void) {
 329     audiohw_mute(1);
 330
 331     wmcodec_write(PWRMGMT3, 0x0);
 332
 333     wmcodec_write(PWRMGMT1, 0x0);
 334
 335     wmcodec_write(PWRMGMT2, 0x40);
 336 }
 337
 338 void audiohw_set_recvol(int left, int right, int type) {
 339
 340     (void)left;
 341     (void)right;
 342     (void)type;
 343 }
 344
 345 void audiohw_set_monitor(bool enable) {
 346
 347     (void)enable;
 348 }
 349 #endif /* HAVE_RECORDING */