Re: [PATCH v2 06/20] drm: i915: Rely on the default ->best_encoder() behavior where appropriate

From: Daniel Vetter <daniel-/w4YWyX8dFk@public.gmane.org>
To: Boris Brezillon
	<boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
	David Airlie <airlied-cv59FeDIM0c@public.gmane.org>,
	dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	Daniel Vetter
	<daniel.vetter-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	Kukjin Kim <kgene-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Krzysztof Kozlowski
	<k.kozlowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	intel-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	Jani Nikula <jani.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
	Alexey Brodkin <abrodkin-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>,
	Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Joonyoung Shim
	<jy0922.shim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Seung-Woo Kim
	<sw0312.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Kyungmin Park
	<kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Stefan Agner <stefan-XLVq0VzYD2Y@public.gmane.org>,
	Alison Wang <alison.wang-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
	Matthias Brugger
	<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Rob Clark <robdclark-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Laurent Pinchart
	<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>,
	Mark Yao <mark.yao-TNX95d0MmH7DzftRWevZcw@public.gmane.org>,
	Heiko Stuebner <heiko@snte>
Subject: Re: [PATCH v2 06/20] drm: i915: Rely on the default ->best_encoder() behavior where appropriate
Date: Fri, 10 Jun 2016 18:41:52 +0200	[thread overview]
Message-ID: <20160610164152.GO3363__47916.7735008106$1465577926$gmane$org@phenom.ffwll.local> (raw)
In-Reply-To: <20160610152412.GL3363-dv86pmgwkMBes7Z6vYuT8azUEOm+Xw19@public.gmane.org>

On Fri, Jun 10, 2016 at 05:24:12PM +0200, Daniel Vetter wrote:
> On Tue, Jun 07, 2016 at 01:48:01PM +0200, Boris Brezillon wrote:
> > For all outputs except dp_mst, we have a 1:1 relationship between
> > connectors and encoders and the driver is relying on the atomic helpers:
> > we can drop the custom ->best_encoder() implementation and let the core
> > call drm_atomic_helper_best_encoder() for us.
> > 
> > Signed-off-by: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> 
> You can also drop the best_encoder from intel_dp_mst, we only need the
> atomic_best_encoder. The best_encoder there was needed to help out the
> fbdev emulation. Care to respin?

Boris pointed out on irc that this won't work for the fbdev stuff since
that has a WARN_ON if theres more than 1 possible encoder. Applied this
one here instead.

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch