firmware/target/coldfire/iaudio/audio-iaudio.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Michael Sevakis
  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 "system.h"
  23 #include "cpu.h"
  24 #include "audio.h"
  25 #include "sound.h"
  26
  27 void audio_set_output_source(int source)
  28 {
  29     int level = set_irq_level(DMA_IRQ_LEVEL);
  30     unsigned long txsrc;
  31
  32     if ((unsigned)source >= AUDIO_NUM_SOURCES)
  33         txsrc = (3 << 8); /* playback, PDOR3 */
  34     else
  35         txsrc = (4 << 8); /* recording, iis1RcvData */
  36
  37     IIS1CONFIG = (IIS1CONFIG & ~(7 << 8)) | txsrc;
  38     restore_irq(level);
  39 } /* audio_set_output_source */
  40
  41 void audio_input_mux(int source, unsigned flags)
  42 {
  43     /* Prevent pops from unneeded switching */
  44     static int last_source = AUDIO_SRC_PLAYBACK;
  45 #ifdef HAVE_FMRADIO_IN
  46     static bool last_recording = false;
  47
  48     bool recording = flags & SRCF_RECORDING;
  49 #else
  50     (void)flags;
  51 #endif
  52
  53     switch (source)
  54     {
  55         default:                            /* playback - no recording */
  56             source = AUDIO_SRC_PLAYBACK;
  57         case AUDIO_SRC_PLAYBACK:
  58             if (source != last_source)
  59             {
  60                 audiohw_disable_recording();
  61                 audiohw_set_monitor(false);
  62                 coldfire_set_dataincontrol(0);
  63             }
  64         break;
  65
  66         case AUDIO_SRC_MIC:                 /* recording only */
  67             if (source != last_source)
  68             {
  69                 audiohw_enable_recording(true);  /* source mic */
  70                 /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
  71                 coldfire_set_dataincontrol((3 << 14) | (4 << 3));
  72             }
  73         break;
  74
  75         case AUDIO_SRC_LINEIN:              /* recording only */
  76             if (source != last_source)
  77             {
  78                 audiohw_enable_recording(false); /* source line */
  79                 /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
  80                 coldfire_set_dataincontrol((3 << 14) | (4 << 3));
  81             }
  82         break;
  83
  84 #ifdef HAVE_FMRADIO_IN
  85         case AUDIO_SRC_FMRADIO:             /* recording and playback */
  86             if (!recording)
  87                 audiohw_set_recvol(23, 23, AUDIO_GAIN_LINEIN);
  88
  89             /* I2S recording and analog playback */
  90             if (source == last_source && recording == last_recording)
  91                 break;
  92
  93             last_recording = recording;
  94
  95             if (recording)
  96             {
  97                 /* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
  98                 coldfire_set_dataincontrol((3 << 14) | (4 << 3));
  99                 audiohw_enable_recording(false); /* source line */
 100             }
 101             else
 102             {
 103                 audiohw_disable_recording();
 104                 audiohw_set_monitor(true);       /* analog bypass */
 105                 coldfire_set_dataincontrol(0);
 106             }
 107         break;
 108 #endif /* HAVE_FMRADIO_IN */
 109     } /* end switch */
 110
 111     /* set line multiplexer */
 112 #ifdef IAUDIO_M3
 113 #ifdef HAVE_FMRADIO_IN
 114     if (source == AUDIO_SRC_FMRADIO)
 115         and_l(~(1 << 25), &GPIO1_OUT);  /* FM radio */
 116     else
 117 #endif
 118         or_l((1 << 25), &GPIO1_OUT);    /* Line In */
 119
 120     or_l((1 << 25), &GPIO1_ENABLE);
 121     or_l((1 << 25), &GPIO1_FUNCTION);
 122
 123 #else /* iAudio M5, X5 */
 124 #ifdef HAVE_FMRADIO_IN
 125     if (source == AUDIO_SRC_FMRADIO)
 126         and_l(~(1 << 29), &GPIO_OUT);   /* FM radio */
 127     else
 128 #endif
 129         or_l((1 << 29), &GPIO_OUT);     /* Line In */
 130
 131     or_l((1 << 29), &GPIO_ENABLE);
 132     or_l((1 << 29), &GPIO_FUNCTION);
 133
 134 #endif /* iAudio M5, X5 */
 135
 136     last_source = source;
 137 } /* audio_input_mux */
 138