firmware/drivers/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 "lcd.h"
  27 #include "cpu.h"
  28 #include "kernel.h"
  29 #include "thread.h"
  30 #include "power.h"
  31 #include "debug.h"
  32 #include "system.h"
  33 #include "sprintf.h"
  34 #include "button.h"
  35 #include "string.h"
  36 #include "file.h"
  37 #include "buffer.h"
  38 #include "audio.h"
  39
  40 #include "wmcodec.h"
  41 #include "wm8731l.h"
  42
  43 #define IPOD_PCM_LEVEL 0x65       /* -6dB */
  44
  45
  46 int wmcodec_mute(int mute)
  47 {
  48     if (mute)
  49     {
  50         /* Set DACMU = 1 to soft-mute the audio DACs. */
  51         wmcodec_write(DACCTRL, 0x8);
  52     } else {
  53         /* Set DACMU = 0 to soft-un-mute the audio DACs. */
  54         wmcodec_write(DACCTRL, 0x0);
  55     }
  56
  57     return 0;
  58 }
  59
  60 /** From ipodLinux **/
  61 static void codec_set_active(int active)
  62 {
  63     /* set active to 0x0 or 0x1 */
  64     if (active) {
  65         wmcodec_write(ACTIVECTRL, 0x01);
  66     } else {
  67         wmcodec_write(ACTIVECTRL, 0x00);
  68     }
  69 }
  70
  71
  72 /* Silently enable / disable audio output */
  73 void wmcodec_enable_output(bool enable)
  74 {
  75     if (enable)
  76     {
  77         /* reset the I2S controller into known state */
  78         i2s_reset();
  79
  80         wmcodec_write(RESET, 0x0);        /*Reset*/
  81
  82         codec_set_active(0x0);
  83
  84 #ifdef HAVE_WM8721
  85         /* DACSEL=1 */
  86         wmcodec_write(0x4, 0x10);
  87 #elif defined HAVE_WM8731
  88         /* DACSEL=1, BYPASS=1 */
  89         wmcodec_write(0x4, 0x18);
  90 #endif
  91
  92         /* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
  93         wmcodec_write(PWRMGMT, 0x67);
  94
  95         /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
  96         /* IWL=00(16 bit) FORMAT=10(I2S format) */
  97         wmcodec_write(AINTFCE, 0x42);
  98
  99         wmcodec_set_sample_rate(WM8731L_44100HZ);
 100
 101         /* set the volume to -6dB */
 102         wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL);
 103         wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL);
 104
 105         /* ACTIVE=1 */
 106         codec_set_active(1);
 107
 108         /* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
 109         wmcodec_write(DACCTRL, 0x0);
 110
 111 #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
 112         /* We need to enable bit 4 of GPIOL for output for sound on H10 */
 113         GPIOL_OUTPUT_VAL |= 0x10;
 114 #endif
 115         wmcodec_mute(0);
 116     } else {
 117 #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
 118         /* We need to disable bit 4 of GPIOL to disable sound on H10 */
 119         GPIOL_OUTPUT_VAL &= ~0x10;
 120 #endif
 121         wmcodec_mute(1);
 122     }
 123 }
 124
 125 int wmcodec_set_master_vol(int vol_l, int vol_r)
 126 {
 127     /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
 128     /* 1111111 == +6dB */
 129     /* 1111001 == 0dB */
 130     /* 0110000 == -73dB */
 131     /* 0101111 == mute (0x2f) */
 132
 133     wmcodec_write(LOUTVOL, vol_l);
 134     wmcodec_write(ROUTVOL, vol_r);
 135
 136     return 0;
 137 }
 138
 139 int wmcodec_set_mixer_vol(int channel1, int channel2)
 140 {
 141     (void)channel1;
 142     (void)channel2;
 143
 144     return 0;
 145 }
 146
 147 void wmcodec_set_bass(int value)
 148 {
 149     (void)value;
 150 }
 151
 152 void wmcodec_set_treble(int value)
 153 {
 154     (void)value;
 155 }
 156
 157 /* Nice shutdown of WM8731 codec */
 158 void wmcodec_close(void)
 159 {
 160    /* set DACMU=1 DEEMPH=0 */
 161     wmcodec_write(DACCTRL, 0x8);
 162
 163     /* ACTIVE=0 */
 164     codec_set_active(0x0);
 165
 166     /* line in mute left & right*/
 167     wmcodec_write(LINVOL, 0x100 | 0x80);
 168
 169     /* set DACSEL=0, MUTEMIC=1 */
 170     wmcodec_write(0x4, 0x2);
 171
 172     /* set POWEROFF=0 OUTPD=0 DACPD=1 */
 173     wmcodec_write(PWRMGMT, 0x6f);
 174
 175     /* set POWEROFF=1 OUTPD=1 DACPD=1 */
 176     wmcodec_write(PWRMGMT, 0xff);
 177 }
 178
 179 /* Change the order of the noise shaper, 5th order is recommended above 32kHz */
 180 void wmcodec_set_nsorder(int order)
 181 {
 182     (void)order;
 183 }
 184
 185 void wmcodec_set_sample_rate(int sampling_control)
 186 {
 187     codec_set_active(0x0);
 188     wmcodec_write(SAMPCTRL, sampling_control);
 189     codec_set_active(0x1);
 190 }
 191
 192 void wmcodec_enable_recording(bool source_mic)
 193 {
 194     (void)source_mic;
 195 }
 196
 197 void wmcodec_disable_recording(void)
 198 {
 199
 200 }
 201
 202 void wmcodec_set_recvol(int left, int right, int type)
 203 {
 204     (void)left;
 205     (void)right;
 206     (void)type;
 207 }
 208
 209 void wmcodec_set_monitor(int enable)
 210 {
 211     (void)enable;
 212 }