sound state files for DM2
Willie
willie_chen at openmoko.com
Mon Feb 25 15:35:30 CET 2008
Willie wrote:
> Hi Miles,
>
> 'madplay' needs four files in /dev/*. The steps are as following.
>
> #mknod dsp c 14 3
> #chown root:audio dsp
> #mknod adsp c 14 12
> #chown root:audio adsp
> #mknod audio c 14 4
> #chown root:audio audio
> #mknod mixer c 14 0
> #chown root:audio mixer
>
> Then we can use madplay to play mp3 files. But now it can't
> generate any sound from buildhost's sound state files.
> Today L.Sean told me the same case here. The stereoout.state
> can't work now, so we can't play any mp3 files . It can make
> GSM phone call sound, because gsmhandset.state can work.
> It's very strange that we don't change stereout.state file.
>
> Regards,
> Willie
>
I cat some codec register values, when I play mp3 files.
root@(none):/sys/devices/platform/soc-audio$ cat codec_reg
WM8753 registers
0: ffffffff
1: 0
2: 0
3: a
4: 42
5: 23
6: 20
7: 17
8: 1ff
9: 1ff
a: f
b: f
c: 7b
d: 0
e: 32
f: 0
10: 1c3
11: 1c3
12: c0
13: 0
14: 141
15: 0
16: 0
17: 0
18: 0
19: 0
1a: 0
1b: 0
1c: 0
1d: 0
1e: 0
1f: 0
20: 55
21: 5
22: 150
23: 55
24: 150
25: 55
26: 50
27: 55
28: 17f
29: 17f
2a: 100
2b: 100
2c: 79
2d: 0
2e: 0
2f: 0
30: 0
31: 197
32: 197
33: 0
34: 4
35: 26
36: e3
37: 136
38: 9
39: 0
3a: 83
3b: 24
3c: 1ba
3d: 0
3e: 0
3f: 0
root@(none):/sys/devices/platform/soc-audio$ cat dapm_widget
Handset Spk: Off
Handset Mic: Off
Headset Mic: Off
GSM Line In: Off
GSM Line Out: Off
Stereo Out: On
Mic 2 Volume: Off
Mic 1 Volume: Off
ALC Mixer: Off
Right Capture Volume: Off
Left Capture Volume: Off
Right ADC: Off
Left ADC: Off
Playback Mixer: Off
Out 4: Off
Out 3: Off
Out3 Left + Right: Off
Voice DAC: Off
Mono Out 2: Off
Mono Out 1: Off
Mono Mixer: Off
Right DAC: Off
Right Out 2: Off
Right Out 1: Off
Right Mixer: Off
Left DAC: Off
Left Out 2: Off
Left Out 1: Off
Left Mixer: Off
Mic Bias: Off
PM State: D3hot
Regards,
Willie
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