[Intel-gfx] [PATCH] drm/i915/display: Trigger Modeset at boot for audio codec init

[Ville Syrjälä]

On Fri, Mar 20, 2020 at 06:19:37AM +0000, Shankar, Uma wrote:
> 
> 
> > -----Original Message-----
> > From: Souza, Jose <jose.souza at intel.com>
> > Sent: Friday, March 20, 2020 12:36 AM
> > To: Shankar, Uma <uma.shankar at intel.com>; intel-gfx at lists.freedesktop.org
> > Cc: Khor, Swee Aun <swee.aun.khor at intel.com>
> > Subject: Re: [Intel-gfx] [PATCH] drm/i915/display: Trigger Modeset at boot for audio
> > codec init
> > 
> > On Wed, 2020-03-18 at 17:00 +0530, Uma Shankar wrote:
> > > If external monitors are connected during boot up, driver uses the
> > > same mode programmed by BIOS and avoids a full modeset.
> > > This results in display audio codec left uninitialized and display
> > > audio fails to work till user triggers a modeset.
> > >
> > > This patch fixes the same by triggering a modeset at boot.
> > 
> > We had the same issue for PSR, take a look to the fix:
> > commit 33e059a2e4df454359f642f2235af39de9d3e914
> > drm/i915/psr: Force PSR probe only after full initialization
> > 
> > Maybe make this even more generic.
> 
> Yeah this looks to dealing with almost a similar need. Thanks for pointing this out,
> will try to come up with a generalized solution.

How about just fixing the uapi vs. hw fail I showed instead of adding
even more hacks?

-- 
Ville Syrjälä
Intel