[Intel-gfx] [PATCH 3/3] drm/i915: Forcing a modeset when resetting HDMI link

[Souza, Jose]

On Mon, 2019-03-04 at 18:34 +0200, Ville Syrjälä wrote:
> On Fri, Mar 01, 2019 at 04:33:49PM -0800, José Roberto de Souza
> wrote:
> > With fastboot enabled in gen9+ it broke the HDMI reset as just
> > setting mode_changed to true causes a fastset and here we want a
> > full
> > modeset that will disable and then enable the encoder of this HDMI
> > link actually, so setting connectors_changed instead that will
> > cause
> > modeset as desired.
> > 
> > Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> 
> Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Merged this patched to dinq, I will take a look at those places bellow.

> 
> The two other questionable places seem to be:
> 
> * intel_digital_connector_atomic_check()
>   Looks like this is currently broken as we don't do infoframe/audio
>   updates from the .update_pipe() hook yet. Also we have no
>   .update_pipe() for pre-ddi platforms.
> 
> * intel_modeset_all_pipes()
>   Should work because we set the flag after the modeset->fastset
>   downgrade has occurred. Might make sense to change this one as
>   well though, just to avoid copy paste errors in the future.
> 
> > ---
> >  drivers/gpu/drm/i915/intel_ddi.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_ddi.c
> > b/drivers/gpu/drm/i915/intel_ddi.c
> > index c22ddde2dfc1..d329f0c206ec 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -3973,7 +3973,7 @@ static int modeset_pipe(struct drm_crtc
> > *crtc,
> >  		goto out;
> >  	}
> >  
> > -	crtc_state->mode_changed = true;
> > +	crtc_state->connectors_changed = true;
> >  
> >  	ret = drm_atomic_commit(state);
> >  out:
> > -- 
> > 2.21.0
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