linux-kernel - Re: [PATCHv2 0/4] gpu: host1x: Add syncpoint base support

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Date:	Mon, 28 Oct 2013 11:06:38 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Arto Merilainen <amerilainen@...dia.com>
Cc:	tbergstrom@...dia.com, dri-devel@...ts.freedesktop.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2 0/4] gpu: host1x: Add syncpoint base support

On Mon, Oct 14, 2013 at 03:21:51PM +0300, Arto Merilainen wrote:
> The host1x driver uses currently syncpoints statically from host1x point of
> view. If we do a wait inside a job, it always has a constant value to wait.
> host1x supports also doing relative syncpoint waits with respect to syncpoint
> bases. This allows doing multiple operations inside a single submit and
> waiting an operation to complete before moving to next one.
> 
> This set of patches adds support for syncpoint bases to host1x driver and
> enables the support for gr2d client.
> 
> I have tested the series using the host1x test application (available at [0],
> function test_wait_base() in tests/tegra/host1x/tegra_host1x_test.c) on cardhu.
> I would appreciate help in reviewing the series and testing the patches
> on other boards.
> 
> Changes in v2:
> - Reordered various code blocks to improve code consistency
> - Functions host1x_syncpt_alloc() and host1x_syncpt_request() take now a single
> bitfield argument instead of separate boolean arguments
> - Added a separate ioctl call for querying the base associated with some
> syncpoint
> 
> [0] https://gitorious.org/linux-host1x/libdrm-host1x
> 
> Arto Merilainen (4):
>   gpu: host1x: Add 'flags' field to syncpt request
>   gpu: host1x: Add syncpoint base support
>   drm/tegra: Deliver syncpoint base to user space
>   drm/tegra: Reserve base for gr2d
> 
>  drivers/gpu/host1x/dev.h                   |  2 ++
>  drivers/gpu/host1x/drm/drm.c               | 25 +++++++++++++
>  drivers/gpu/host1x/drm/gr2d.c              |  2 +-
>  drivers/gpu/host1x/hw/channel_hw.c         | 19 ++++++++++
>  drivers/gpu/host1x/hw/hw_host1x01_uclass.h |  6 ++++
>  drivers/gpu/host1x/syncpt.c                | 58 +++++++++++++++++++++++++-----
>  drivers/gpu/host1x/syncpt.h                | 10 +++++-
>  include/uapi/drm/tegra_drm.h               | 26 +++++++++-----
>  8 files changed, 128 insertions(+), 20 deletions(-)

I've applied the series, though I had to rework some of it because
host1x and DRM have significantly changed in the meantime.

Thierry

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