linux-kernel - Re: [PATCH 4/4] drm/panel: Add helper for simple panel connector

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Message-ID: <20160506140816.GD27098@phenom.ffwll.local>
Date:	Fri, 6 May 2016 16:08:16 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	Noralf Trønnes <noralf@...nnes.org>,
	treding@...dia.com, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 4/4] drm/panel: Add helper for simple panel connector

On Fri, May 06, 2016 at 04:03:47PM +0200, Thierry Reding wrote:
> On Thu, May 05, 2016 at 03:24:34PM +0200, Noralf Trønnes wrote:
> > Add function to create a simple connector for a panel.
> 
> I'm not sure I see the usefulness of this. Typically you'd attach a
> panel to an encoder/connector, in which case you already have the
> connector.
> 
> Perhaps it would become more obvious why we need this if you posted
> patches that show where this is used?

The other helpers give you a simple drm pipeline with plane, crtc &
encoder all baked into on drm_simple_pipeline structure. The only thing
variable you have to hook up to that is the drm_connector. And I think for
dead-simple panels avoiding the basic boilerplate in that does indeed make
some sense.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch