Re: [alsa-devel] [PATCH 2/3] ALSA - hda: Add support for link audio time reporting

On Fri, Jul 15, 2016 at 07:39:17AM +0200, Takashi Iwai wrote:

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So dependency is around convert_art_to_tsc() which is x86 API.

How is defined in the spec? I wonder it because HD-audio spec itself is usually CPU-neutral.

You are right. HDA spec is not x86 specfic. HDA counter report the value of ART counter for a time snapshot.

The problem is we do not get TSC value from HDA controller :(

So we need to use asm code for conversion..

Thanks