simple audio tools for AArch64 systems

[Andre Przywara]

Hi,

(CC:ing the (old) sunxi list for the benefit of others)

as promised on IRC, my audio setup for the H616:

I was able to successfully play audio on some H616 board with a
mainline kernel and the attached tools (built from tinyalsa.git,
statically linked against musl). This looks all very 1990s, but is
probably among the most basic ways to verify sound functionality. I use
it on a busybox based rootfs, but anything should really work:
# tinymix contents
Number of controls: 7
ctl type num name device value
0 INT 1 DAC Playback Volume 063 (range 0->63)
1 INT 1 Line Out Playback Volume 00 (range 0->31)
2 BOOL 2 Line Out Playback Switch 0Off, Off
3 BOOL 1 LINEOUT Switch 0On
4 BOOL 2 DAC Playback Switch 0Off, Off
5 BOOL 2 DAC Reversed Playback Switch 0Off, Off
6 ENUM 2 Line Out Source Playback Route 0> Stereo, Mono Differential, , > Stereo, Mono Differential,
# tinymix set 1 31
# tinymix set 2 1 1
# tinymix set 4 1 1
# tinymix contents
Number of controls: 7
ctl type num name device value
0 INT 1 DAC Playback Volume 063 (range 0->63)
1 INT 1 Line Out Playback Volume 031 (range 0->31)
2 BOOL 2 Line Out Playback Switch 0On, On
3 BOOL 1 LINEOUT Switch 0On
4 BOOL 2 DAC Playback Switch 0On, On
5 BOOL 2 DAC Reversed Playback Switch 0Off, Off
6 ENUM 2 Line Out Source Playback Route 0> Stereo, Mono Differential, , > Stereo, Mono Differential,
# tinyplay track05.wav
playing 'track05.wav': 2 ch, 44100 hz, 16-bit signed PCM
^CPlayed 7888896 bytes. Remains 23456208 bytes.

Hope that helps!

Cheers,
Andre