[Intel-gfx] [PATCH v3] drm/i915/skl: Deinit/init the display at suspend/resume

[Damien Lespiau]

On Thu, May 21, 2015 at 06:58:48PM +0300, Ville Syrjälä wrote:
> > > Hmm, actually are we not calling the skl_init_cdclk() on boot at all? I see
> > > it only in the resume path.
> > 
> > Yes that's correct, we always have display intialized by the firmware on
> > big core as far as I know (which may not be true for BXT).
> 
> What about module reload?

I can see your point, but we're not totally de-initializing display on
unload today, so we keep the current CDCLK (among other things) across
module reload.

Just tried tests/drm_module_reload and it works as expected, display
comes back up.

-- 
Damien