[PATCH 00/14] ASoC: Intel/SOF: extend run-time driver selection to ACPI devices

[Takashi Iwai]

On Tue, 24 Nov 2020 15:01:19 +0100,
Mark Brown wrote:
> 
> On Tue, Nov 24, 2020 at 11:56:36AM +0000, Rojewski, Cezary wrote:
> 
> > What the patchset presents catpt vs SOF. /sof/ runs through SOF firmware
> > so it cannot be account as old-implementation. It's a mix of not
> > recommended fw + incorrect sw flow. As old /haswell/ is no more, there
> > is no worrying about catpt deployment - it's your only option. As there
> > is no userspace involved (lack of topology files), base firmware binary
> > remains the same and amixer kcontrols behave 1:1 when compared to its
> > predecessor, compatibility is left intact.
> 
> > That's exactly why we should be explicit in driver selection. Pretty
> > sure hsw/bdw case is still mistakenly addressed to as if it was
> > atom-based platform.
> 
> It's not just the userspace interface that worries people, it's also any
> board specific quirks that might turn up.  A good chunk of the work with
> x86 sound support is quirking around platform specifics - look at all
> the patches Hans sends for example.  In an ideal world this would just
> be people worrying too much but the general history with getting generic
> code working well on a wide range of x86 hardware it's hard to blame
> anyone for being conservative about substantial changes in the software
> stack.

I guess Cezary's point is that CATPT is the only driver for Haswell,
hence the intel-dsp-config is useless for it.

But I thought CATPT also covers Broadwell, and Broadwell can be
supported by both CATPT and SOF?  If so, the dynamic switching makes
sense.


Takashi