firmware/target/arm/sandisk/audio-c200_e200.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 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 "system.h"
  22 #include "cpu.h"
  23 #include "audio.h"
  24 #include "sound.h"
  25
  26 int audio_channels = 2;
  27 int audio_output_source = AUDIO_SRC_PLAYBACK;
  28
  29 void audio_set_output_source(int source)
  30 {
  31     int oldmode = set_fiq_status(FIQ_DISABLED);
  32
  33     if ((unsigned)source >= AUDIO_NUM_SOURCES)
  34         source = AUDIO_SRC_PLAYBACK;
  35
  36     audio_output_source = source;
  37
  38     if (source != AUDIO_SRC_PLAYBACK)
  39         IISCONFIG |= (1 << 29);
  40
  41     set_fiq_status(oldmode);
  42 } /* audio_set_output_source */
  43
  44 void audio_input_mux(int source, unsigned flags)
  45 {
  46     static int last_source = AUDIO_SRC_PLAYBACK;
  47     static bool last_recording = false;
  48     bool recording = flags & SRCF_RECORDING;
  49
  50     switch (source)
  51     {
  52         default:                        /* playback - no recording */
  53             source = AUDIO_SRC_PLAYBACK;
  54         case AUDIO_SRC_PLAYBACK:
  55             audio_channels = 2;
  56             if (source != last_source)
  57             {
  58                 audiohw_set_monitor(false);
  59                 audiohw_disable_recording();
  60             }
  61             break;
  62
  63         case AUDIO_SRC_MIC:             /* recording only */
  64             audio_channels = 1;
  65             if (source != last_source)
  66             {
  67                 audiohw_set_monitor(false);
  68                 audiohw_enable_recording(true);  /* source mic */
  69             }
  70             break;
  71
  72         case AUDIO_SRC_FMRADIO:         /* recording and playback */
  73             audio_channels = 2;
  74
  75             if (source == last_source && recording == last_recording)
  76                 break;
  77
  78             last_recording = recording;
  79
  80             if (recording)
  81             {
  82                 audiohw_set_monitor(false);
  83                 audiohw_enable_recording(false);
  84             }
  85             else
  86             {
  87                 audiohw_disable_recording();
  88                 audiohw_set_monitor(true); /* line 1 analog audio path */
  89             }
  90             break;
  91     } /* end switch */
  92
  93     last_source = source;
  94 } /* audio_input_mux */