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Message-ID: <50D42486.7080901@nvidia.com>
Date:	Fri, 21 Dec 2012 10:57:42 +0200
From:	Arto Merilainen <amerilainen@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	Terje Bergstrom <tbergstrom@...dia.com>,
	Thierry Reding <thierry.reding@...onic-design.de>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC v2 6/8] gpu: drm: tegra: Remove redundant host1x

On 12/20/2012 07:14 PM, Stephen Warren wrote:
>
> What's wrong with just having each device ask the host1x (its parent)
> for a pointer to the (dummy) tegradrm device. That seems extremely
>

We are talking about creating a dummy device because:
- we need to give something for drm_platform_init(),
- drm related data should be stored somewhere,
- some data must be passed to all driver probe() functions. This is not 
hw-related data, but just some lists that are used to ensure that all 
drivers have been initialised before calling drm_platform_init().

All these issues are purely tegra-drm related and solving them elsewhere 
(in host1x) would be just wrong! host1x would not even use the dummy 
device for anything so creating it there seems bizarre.

- Arto
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