* driver mixer control questions
@ 2007-05-02 4:40 Tim Harvey
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From: Tim Harvey @ 2007-05-02 4:40 UTC (permalink / raw)
To: alsa-devel
I'm troubleshooting an issue with an ALSA driver I wrote for a very unique
hardware platform. In this case I have an audio codec which only has a usable
'line-in' capture source. Currently the only mixer control I've created is a
'Master Playback Volume'. Do I need to create some kind of control for
'line-in'?
I'm unclear how to 'register' capture inputs so that they will be returned by
the OSS mixer emulation's ioctl SOUND_MIXER_READ_RECMASK. Currently that ioctl
returns 0 for my mixer device.
Also, is a control 'switch' such as 'Master Playback Switch' simply a mute
control or is it intended to be any type of control which could have enumerated
values?
Thanks,
Tim
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