linux-kernel - Re: [PATCH v2 06/20] drm: i915: Rely on the default ->best

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Date:	Fri, 10 Jun 2016 18:41:52 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	David Airlie <airlied@...ux.ie>,
	dri-devel@...ts.freedesktop.org,
	Daniel Vetter <daniel.vetter@...el.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-samsung-soc@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Alexey Brodkin <abrodkin@...opsys.com>,
	Inki Dae <inki.dae@...sung.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Seung-Woo Kim <sw0312.kim@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Stefan Agner <stefan@...er.ch>,
	Alison Wang <alison.wang@...escale.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Rob Clark <robdclark@...il.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Mark Yao <mark.yao@...k-chips.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Benjamin Gaignard <benjamin.gaignard@...aro.org>,
	Vincent Abriou <vincent.abriou@...com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Eric Anholt <eric@...olt.net>,
	Gerd Hoffmann <kraxel@...hat.com>,
	linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
	freedreno@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org, linux-tegra@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v2 06/20] drm: i915: Rely on the default ->best_encoder()
 behavior where appropriate

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@...e-electrons.com>
> 
> 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