firmware/drivers/audio/wm8731l.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Driver for WM8731L audio codec
  11  *
  12  * Based on code from the ipodlinux project - http://ipodlinux.org/
  13  * Adapted for Rockbox in January 2006
  14  *
  15  * Original file: linux/arch/armnommu/mach-ipod/audio.c
  16  *
  17  * Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
  18  *
  19  * All files in this archive are subject to the GNU General Public License.
  20  * See the file COPYING in the source tree root for full license agreement.
  21  *
  22  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  23  * KIND, either express or implied.
  24  *
  25  ****************************************************************************/
  26 #include "config.h"
  27 #include "logf.h"
  28 #include "system.h"
  29 #include "string.h"
  30 #include "audio.h"
  31
  32 #include "wmcodec.h"
  33 #include "audiohw.h"
  34 #include "i2s.h"
  35
  36 #define IPOD_PCM_LEVEL 0x65       /* -6dB */
  37
  38 /* use zero crossing to reduce clicks during volume changes */
  39 #define VOLUME_ZC_WAIT (1<<7)
  40
  41 const struct sound_settings_info audiohw_settings[] = {
  42     [SOUND_VOLUME]        = {"dB", 0,  1, -74,   6, -25},
  43     /* HAVE_SW_TONE_CONTROLS */
  44     [SOUND_BASS]          = {"dB", 0,  1, -24,  24,   0},
  45     [SOUND_TREBLE]        = {"dB", 0,  1, -24,  24,   0},
  46     [SOUND_BALANCE]       = {"%",  0,  1,-100, 100,   0},
  47     [SOUND_CHANNELS]      = {"",   0,  1,   0,   5,   0},
  48     [SOUND_STEREO_WIDTH]  = {"%",  0,  1,   0, 255, 100},
  49 #ifdef HAVE_RECORDING
  50     [SOUND_LEFT_GAIN]     = {"dB", 1,  1,-128,  96,   0},
  51     [SOUND_RIGHT_GAIN]    = {"dB", 1,  1,-128,  96,   0},
  52     [SOUND_MIC_GAIN]      = {"dB", 1,  1,-128, 108,  16},
  53 #endif
  54 };
  55
  56 /* convert tenth of dB volume (-730..60) to master volume register value */
  57 int tenthdb2master(int db)
  58 {
  59     /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
  60     /* 1111111 == +6dB  (0x7f) */
  61     /* 1111001 == 0dB   (0x79) */
  62     /* 0110000 == -73dB (0x30 */
  63     /* 0101111 == mute  (0x2f) */
  64
  65     if (db < VOLUME_MIN) {
  66         return 0x2f;
  67     } else {
  68         return((db/10)+0x30+73);
  69     }
  70 }
  71
  72 /* convert tenth of dB volume (-780..0) to mixer volume register value */
  73 int tenthdb2mixer(int db)
  74 {
  75     if (db < -660)                 /* 1.5 dB steps */
  76         return (2640 - db) / 15;
  77     else if (db < -600)            /* 0.75 dB steps */
  78         return (990 - db) * 2 / 15;
  79     else if (db < -460)            /* 0.5 dB steps */
  80         return (460 - db) / 5;
  81     else                           /* 0.25 dB steps */
  82         return -db * 2 / 5;
  83 }
  84
  85 int audiohw_mute(int mute)
  86 {
  87     if (mute)
  88     {
  89         /* Set DACMU = 1 to soft-mute the audio DACs. */
  90         wmcodec_write(DACCTRL, 0x8);
  91     } else {
  92         /* Set DACMU = 0 to soft-un-mute the audio DACs. */
  93         wmcodec_write(DACCTRL, 0x0);
  94     }
  95
  96     return 0;
  97 }
  98
  99 /** From ipodLinux **/
 100 static void codec_set_active(int active)
 101 {
 102     /* set active to 0x0 or 0x1 */
 103     if (active) {
 104         wmcodec_write(ACTIVECTRL, 0x01);
 105     } else {
 106         wmcodec_write(ACTIVECTRL, 0x00);
 107     }
 108 }
 109
 110
 111 /* Silently enable / disable audio output */
 112 void audiohw_enable_output(bool enable)
 113 {
 114     if (enable)
 115     {
 116         /* reset the I2S controller into known state */
 117         i2s_reset();
 118
 119         wmcodec_write(RESET, 0x0);        /*Reset*/
 120
 121         codec_set_active(0x0);
 122
 123 #ifdef HAVE_WM8721
 124         /* DACSEL=1 */
 125         wmcodec_write(0x4, 0x10);
 126 #elif defined HAVE_WM8731
 127         /* DACSEL=1, BYPASS=1 */
 128         wmcodec_write(0x4, 0x18);
 129 #endif
 130
 131         /* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
 132         wmcodec_write(PWRMGMT, 0x67);
 133
 134         /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
 135         /* IWL=00(16 bit) FORMAT=10(I2S format) */
 136         wmcodec_write(AINTFCE, 0x42);
 137
 138         audiohw_set_sample_rate(WM8731L_44100HZ);
 139
 140         /* set the volume to -6dB */
 141         wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL);
 142         wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL);
 143
 144         /* ACTIVE=1 */
 145         codec_set_active(1);
 146
 147         /* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
 148         wmcodec_write(DACCTRL, 0x0);
 149
 150 #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
 151         /* We need to enable bit 4 of GPIOL for output for sound on H10 */
 152         GPIOL_OUTPUT_VAL |= 0x10;
 153 #endif
 154         audiohw_mute(0);
 155     } else {
 156 #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
 157         /* We need to disable bit 4 of GPIOL to disable sound on H10 */
 158         GPIOL_OUTPUT_VAL &= ~0x10;
 159 #endif
 160         audiohw_mute(1);
 161     }
 162 }
 163
 164 int audiohw_set_master_vol(int vol_l, int vol_r)
 165 {
 166     /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
 167     /* 1111111 == +6dB */
 168     /* 1111001 == 0dB */
 169     /* 0110000 == -73dB */
 170     /* 0101111 == mute (0x2f) */
 171
 172     wmcodec_write(LOUTVOL, VOLUME_ZC_WAIT | vol_l);
 173     wmcodec_write(ROUTVOL, VOLUME_ZC_WAIT | vol_r);
 174
 175     return 0;
 176 }
 177
 178 int audiohw_set_mixer_vol(int channel1, int channel2)
 179 {
 180     (void)channel1;
 181     (void)channel2;
 182
 183     return 0;
 184 }
 185
 186 void audiohw_set_bass(int value)
 187 {
 188     (void)value;
 189 }
 190
 191 void audiohw_set_treble(int value)
 192 {
 193     (void)value;
 194 }
 195
 196 /* Nice shutdown of WM8731 codec */
 197 void audiohw_close(void)
 198 {
 199    /* set DACMU=1 DEEMPH=0 */
 200     wmcodec_write(DACCTRL, 0x8);
 201
 202     /* ACTIVE=0 */
 203     codec_set_active(0x0);
 204
 205     /* line in mute left & right*/
 206     wmcodec_write(LINVOL, 0x100 | 0x80);
 207
 208     /* set DACSEL=0, MUTEMIC=1 */
 209     wmcodec_write(0x4, 0x2);
 210
 211     /* set POWEROFF=0 OUTPD=0 DACPD=1 */
 212     wmcodec_write(PWRMGMT, 0x6f);
 213
 214     /* set POWEROFF=1 OUTPD=1 DACPD=1 */
 215     wmcodec_write(PWRMGMT, 0xff);
 216 }
 217
 218 /* Change the order of the noise shaper, 5th order is recommended above 32kHz */
 219 void audiohw_set_nsorder(int order)
 220 {
 221     (void)order;
 222 }
 223
 224 void audiohw_set_sample_rate(int sampling_control)
 225 {
 226     codec_set_active(0x0);
 227     wmcodec_write(SAMPCTRL, sampling_control);
 228     codec_set_active(0x1);
 229 }
 230
 231 void audiohw_enable_recording(bool source_mic)
 232 {
 233     static int line_level = 0x17;
 234     static int mic_boost = true;
 235     codec_set_active(0x0);
 236
 237     /* set BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0
 238      * LRP=0 IWL=00(16 bit) FORMAT=10(I2S format) */
 239     wmcodec_write(AINTFCE, 0x42);
 240
 241     wmcodec_write(LOUTVOL, 0x0);   /* headphone mute left */
 242     wmcodec_write(ROUTVOL, 0x0);   /* headphone mute right */
 243
 244
 245     if(source_mic){
 246         wmcodec_write(LINVOL, 0x80);  /* line in mute left */
 247         wmcodec_write(RINVOL, 0x80);  /* line in mute right */
 248
 249
 250         if (mic_boost) {
 251             wmcodec_write(AAPCTRL, 0x5);   /* INSEL=mic, MIC_BOOST=enable */
 252         } else {
 253             wmcodec_write(AAPCTRL, 0x4);   /* INSEL=mic */
 254         }
 255     } else {
 256         if (line_level == 0) {
 257             wmcodec_write(LINVOL, 0x80);
 258             wmcodec_write(RINVOL, 0x80);
 259         } else {
 260             wmcodec_write(LINVOL, line_level);
 261             wmcodec_write(RINVOL, line_level);
 262         }
 263         wmcodec_write(AAPCTRL, 0xa);   /* BY PASS, mute mic, INSEL=line in */
 264     }
 265
 266     /* disable ADC high pass filter, mute dac */
 267     wmcodec_write(DACCTRL, 0x9);
 268
 269     /* power on (PWR_OFF=0) */
 270     if(source_mic){
 271         /* CLKOUTPD OSCPD OUTPD DACPD LINEINPD */
 272         wmcodec_write(PWRMGMT, 0x79);
 273     } else {
 274         wmcodec_write(PWRMGMT, 0x7a);  /* MICPD */
 275     }
 276
 277     codec_set_active(0x1);
 278 }
 279
 280 void audiohw_disable_recording(void)
 281 {
 282     /* set DACMU=1 DEEMPH=0 */
 283     wmcodec_write(DACCTRL, 0x8);
 284
 285     /* ACTIVE=0 */
 286     codec_set_active(0x0);
 287
 288     /* line in mute left & right*/
 289     wmcodec_write(LINVOL, 0x80);
 290     wmcodec_write(RINVOL, 0x80);
 291
 292     /* set DACSEL=0, MUTEMIC=1 */
 293     wmcodec_write(AAPCTRL, 0x2);
 294
 295     /* set POWEROFF=0 OUTPD=0 DACPD=1 */
 296     wmcodec_write(PWRMGMT, 0x6f);
 297
 298     /* set POWEROFF=1 OUTPD=1 DACPD=1 */
 299     wmcodec_write(PWRMGMT, 0xff);
 300 }
 301
 302 void audiohw_set_recvol(int left, int right, int type)
 303 {
 304     (void)left;
 305     (void)right;
 306     (void)type;
 307 }
 308
 309 void audiohw_set_monitor(int enable)
 310 {
 311     (void)enable;
 312 }