linux-kernel - Re: [PATCHv5 0/8] Support for Tegra 2D hardware

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Date:	Tue, 15 Jan 2013 12:33:48 +0100
From:	Thierry Reding <thierry.reding@...onic-design.de>
To:	Terje Bergstrom <tbergstrom@...dia.com>
Cc:	amerilainen@...dia.com, airlied@...ux.ie,
	dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv5 0/8] Support for Tegra 2D hardware

On Tue, Jan 15, 2013 at 01:26:14PM +0200, Terje Bergstrom wrote:
> This set of patches adds support for Tegra20 and Tegra30 host1x and
> 2D. It is based on linux-next-20130114.
> 
> The fifth version merges DRM and host1x drivers into one driver. This
> allowed moving include/linux/host1x.h back into the driver and removed
> the need for a dummy platform device. This version also uses the code
> from tegradrm driver almost as is, so there are a lot less actual code
> changes.
> 
> This patch set does not have the host1x allocator, but it uses CMA
> helpers for memory management.
> 
> host1x is the driver that controls host1x hardware. It supports
> host1x command channels, synchronization, and memory management. It
> is sectioned into logical driver under drivers/gpu/host1x and
> physical driver under drivers/host1x/hw. The physical driver is
> compiled with the hardware headers of the particular host1x version.
> 
> The hardware units are described (briefly) in the Tegra2 TRM. Wiki
> page https://gitorious.org/linux-tegra-drm/pages/Host1xIntroduction
> also contains a short description of the functionality.
> 
> The patch set merges tegradrm into host1x and adds 2D driver, which
> uses host1x channels and sync points. The patch set also adds user
> space API to tegradrm for accessing host1x and 2D.
> 
> Terje Bergstrom (8):
>   gpu: host1x: Add host1x driver
>   gpu: host1x: Add syncpoint wait and interrupts
>   gpu: host1x: Add channel support
>   gpu: host1x: Add debug support
>   drm: tegra: Move drm to live under host1x
>   gpu: host1x: Remove second host1x driver
>   ARM: tegra: Add board data and 2D clocks
>   drm: tegra: Add gr2d device

Hi Terje,

Just by a quick glance this looks like we're getting closer. To make
reviewing easier, would you mind resending patches formatted with -M so
that git actually detects that tegra-drm was moved. That should make it
easy to see what exactly needed to be changed besides the relocation.

Thierry

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