firmware/target/arm/audio-pp.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 "system.h"
  22 #include "cpu.h"
  23 #include "audio.h"
  24 #include "sound.h"
  25
  26 #if INPUT_SRC_CAPS != 0
  27 void audio_set_output_source(int source)
  28 {
  29     if ((unsigned)source >= AUDIO_NUM_SOURCES)
  30         source = AUDIO_SRC_PLAYBACK;
  31 } /* audio_set_output_source */
  32
  33 void audio_input_mux(int source, unsigned flags)
  34 {
  35     (void)flags;
  36     /* Prevent pops from unneeded switching */
  37     static int last_source = AUDIO_SRC_PLAYBACK;
  38 #ifdef HAVE_FMRADIO_REC
  39     bool recording = flags & SRCF_RECORDING;
  40     static bool last_recording = false;
  41 #endif
  42
  43 #if defined(IPOD_COLOR) || defined (IPOD_4G)
  44     /* The usual magic from IPL - I'm guessing this configures the headphone
  45        socket to be input or output. */
  46     if ((flags & SRCF_RECORDING) && source != AUDIO_SRC_PLAYBACK)
  47     {
  48         /* input */
  49         GPIO_CLEAR_BITWISE(GPIOI_OUTPUT_VAL, 0x40);
  50         GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_VAL, 0x04);
  51     }
  52     else
  53     {
  54         /* output */
  55         GPIO_SET_BITWISE(GPIOI_OUTPUT_VAL, 0x40);
  56         GPIO_SET_BITWISE(GPIOA_OUTPUT_VAL, 0x04);
  57     }
  58 #endif /* IPOD_COLOR || IPOD_4G */
  59
  60     switch (source)
  61     {
  62         default:                        /* playback - no recording */
  63             source = AUDIO_SRC_PLAYBACK;
  64         case AUDIO_SRC_PLAYBACK:
  65 #ifdef HAVE_RECORDING
  66             if (source != last_source)
  67             {
  68                 audiohw_set_monitor(false);
  69                 audiohw_disable_recording();
  70             }
  71 #endif
  72         break;
  73 #ifdef HAVE_MIC_REC
  74         case AUDIO_SRC_MIC:             /* recording only */
  75             if (source != last_source)
  76             {
  77                 audiohw_set_monitor(false);
  78                 audiohw_enable_recording(true);  /* source mic */
  79             }
  80         break;
  81 #endif
  82 #ifdef HAVE_LINE_REC
  83         case AUDIO_SRC_LINEIN:          /* recording only */
  84 #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
  85             /* Switch line in source to line-in */
  86             GPIO_SET_BITWISE(GPIOB_OUTPUT_VAL, 0x04);
  87 #endif
  88             if (source != last_source)
  89             {
  90                 audiohw_set_monitor(false);
  91                 audiohw_enable_recording(false); /* source line */
  92             }
  93         break;
  94 #endif
  95 #ifdef HAVE_FMRADIO_REC
  96         case AUDIO_SRC_FMRADIO:         /* recording and playback */
  97 #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
  98             /* Switch line in source to tuner */
  99             GPIO_CLEAR_BITWISE(GPIOB_OUTPUT_VAL, 0x04);
 100             /* Set line-in vol to +12dB, which is proper for H10's */
 101             if (!recording)
 102                 audiohw_set_recvol(0x1f, 0x1f, AUDIO_GAIN_LINEIN);
 103 #else            /* Set line-in vol to 0dB*/
 104             if (!recording)
 105                 audiohw_set_recvol(0x17, 0x17, AUDIO_GAIN_LINEIN);
 106 #endif
 107
 108             if (source == last_source && recording == last_recording)
 109                 break;
 110
 111             last_recording = recording;
 112
 113 #if CONFIG_TUNER & IPOD_REMOTE_TUNER
 114             /* Ipod FM tuner is in the remote connected to line-in */
 115                 audiohw_enable_recording(false); /* source line */
 116                 audiohw_set_monitor(true);  /* enable bypass mode */
 117 #else
 118             if (recording)
 119             {
 120                 audiohw_set_monitor(false);  /* disable bypass mode */
 121                 audiohw_enable_recording(false); /* select line-in source */
 122             }
 123             else
 124             {
 125                 audiohw_disable_recording();
 126                 audiohw_set_monitor(true);  /* enable bypass mode */
 127             }
 128 #endif
 129         break;
 130 #endif
 131     } /* end switch */
 132
 133     last_source = source;
 134 } /* audio_input_mux */
 135 #endif /* INPUT_SRC_CAPS != 0 */