1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id:$
*
* Copyright (C) 2010 Marcin Bukat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "system.h"
#include "cpu.h"
#include "audio.h"
#include "sound.h"
static inline void enable_mclk(bool enable)
{
if(enable)
and_l(~(1<<10), &GPIO1_FUNCTION);
else
or_l((1<<10), &GPIO1_FUNCTION);
}
void audio_set_output_source(int source)
{
static const unsigned char txsrc_select[AUDIO_NUM_SOURCES+1] =
{
[AUDIO_SRC_PLAYBACK+1] = 3, /* PDOR3 */
[AUDIO_SRC_MIC+1] = 4, /* IIS1 RcvData */
[AUDIO_SRC_LINEIN+1] = 4, /* IIS1 RcvData */
[AUDIO_SRC_FMRADIO+1] = 4, /* IIS1 RcvData */
};
int level = set_irq_level(DMA_IRQ_LEVEL);
if ((unsigned)source >= AUDIO_NUM_SOURCES)
source = AUDIO_SRC_PLAYBACK;
IIS2CONFIG = (IIS2CONFIG & ~(7 << 8)) | (txsrc_select[source+1] << 8);
restore_irq(level);
}
void audio_input_mux(int source, unsigned flags)
{
/* Prevent pops from unneeded switching */
static int last_source = AUDIO_SRC_PLAYBACK;
bool recording = flags & SRCF_RECORDING;
static bool last_recording = false;
switch(source)
{
default:
/* playback - no recording */
source = AUDIO_SRC_PLAYBACK;
case AUDIO_SRC_PLAYBACK:
if (source != last_source)
{
audiohw_set_recsrc(source,false);
coldfire_set_dataincontrol(0);
}
break;
case AUDIO_SRC_MIC:
case AUDIO_SRC_LINEIN:
/* recording only */
if (source != last_source)
{
audiohw_set_recsrc(source,true);
/* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
coldfire_set_dataincontrol((3 << 14) | (4 << 3));
}
break;
case AUDIO_SRC_FMRADIO:
if (source == last_source && recording == last_recording)
break;
last_recording = recording;
/* Int. when 6 samples in FIFO, PDIR2 src = iis1RcvData */
coldfire_set_dataincontrol(recording ?
((3 << 14) | (4 << 3)) : 0);
audiohw_set_recsrc(source, recording);
break;
}
last_source = source;
}
|
