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    SubjectRe: [alsa-devel] [RFC/RFT PATCH] ASoC: topology: Improve backwards compatibility with v4 topology files
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    On 5/23/18 3:24 AM, Mark Brown wrote:
    > On Tue, May 22, 2018 at 02:59:35PM -0500, Pierre-Louis Bossart wrote:
    >
    >> I am also not convinced by the notion that maintaining topology files is
    >> only a userspace/distro issue. This would mean some distros will have access
    >> to the required topology files, possibly enabling DSP processing
    >> capabilities, but other will not and will not be able to enable even basic
    >> playback/capture. Just like we have a basic firmware with limited
    >> functionality in /lib/firmware/intel, it would make sense to require a basic
    >> .conf file in alsa-lib for every upstream machine driver - along possibly
    >> with a basic UCM file so that audio works no matter what distro people use.
    >
    > The point here is that people should be able to update their kernel
    > without updating their userspace so things have to work with whatever
    > they have right now - anything that relies on shipping new firmware or
    > configuration files to userspace is a problem.

    Agree.

    My point was a bit different: distributions like Gallium start without
    the relevant topology files and UCM settings, and we should have a
    reference to quickly enable audio without having to borrow and modify
    files from another distro. I faced this issue when I worked with the
    Gallium folks to enable audio on Rambi and Cyan Chromebooks and ended-up
    creating this reference myself.

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