From: Rob Clark <robdclark@gmail.com>
To: "Wentland, Harry" <Harry.Wentland@amd.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>,
"Cheng, Tony" <Tony.Cheng@amd.com>,
"Lysenko, Mykola" <Mykola.Lysenko@amd.com>
Subject: Re: [PATCH 00/29] Enabling new DAL display driver for amdgpu on Carrizo and Tonga
Date: Sun, 14 Feb 2016 08:32:39 -0500 [thread overview]
Message-ID: <CAF6AEGshdCfgSSHeUWEBOvF4B2ADv7GL8po-PEpQWsp0jhgBZg@mail.gmail.com> (raw)
In-Reply-To: <BY1PR12MB0408C90C7AFA8A995CCC14E88CA90@BY1PR12MB0408.namprd12.prod.outlook.com>
On Fri, Feb 12, 2016 at 7:05 PM, Wentland, Harry <Harry.Wentland@amd.com> wrote:
>
> The current amdgpu display stack grew somewhat organically and as such is not well suited to handling all of the hardware dependencies involved especially in areas like audio. The drm abstractions used by the old code map less and less well to new hw pipelines. Atomic helps, but if we are going to convert, it seemed like a good time to start fresh.
>
> Our DC (Display Core in dc.h, etc.) is the framework to allow us to well represent current and future HW architectures. These don't always map one-to-one to DRM interfaces. For one we can't make the assumption that surfaces map one-to-one to pipes.
So, this sounds a bit vaguely like some things that I have discussed
from drm/msm.. where you might end up using multiple planes to scan
out a single surface, or multiplex a single plane between multiple
surfaces (or combinations thereof)..
I think what we'll end up doing is virtualizing planes so we advertise
to userspace more planes than actually exist, and at atomic update
time, dynamically assign pipes to planes, and reject things if
userspace asks for too many planes.. although this is getting into an
area where it helps to assume that there is a userspace component
which is familiar with your hw, which is true for android (and I think
some day wayland compositors will have to grow similar capability for
driver specific userspace plugin to make decisions about how to assign
planes).
Not sure if a similar approach would help you to fit better into the
kms/atomic framework?
BR,
-R
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next prev parent reply other threads:[~2016-02-14 13:33 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-11 17:19 [PATCH 00/29] Enabling new DAL display driver for amdgpu on Carrizo and Tonga Harry Wentland
2016-02-11 17:19 ` [PATCH 01/29] drm/amd/dal: Add dal headers Harry Wentland
2016-02-11 17:19 ` [PATCH 02/29] drm/amd/dal: Add DAL Basic Types and Logger Harry Wentland
2016-02-11 17:19 ` [PATCH 03/29] drm/amd/dal: Fixed point arithmetic Harry Wentland
2016-02-11 17:19 ` [PATCH 04/29] drm/amd/dal: Asic Capabilities Harry Wentland
2016-02-11 17:19 ` [PATCH 05/29] drm/amd/dal: GPIO (General Purpose IO) Harry Wentland
2016-02-11 17:19 ` [PATCH 06/29] drm/amd/dal: Adapter Service Harry Wentland
2016-02-12 0:26 ` Dave Airlie
2016-02-12 14:30 ` Wentland, Harry
2016-02-11 17:19 ` [PATCH 07/29] drm/amd/dal: BIOS Parser Harry Wentland
2016-02-11 17:19 ` [PATCH 08/29] drm/amd/dal: I2C Aux Manager Harry Wentland
2016-02-11 20:19 ` Rob Clark
2016-02-11 20:52 ` Daniel Vetter
2016-02-17 3:23 ` Harry Wentland
2016-02-11 17:19 ` [PATCH 09/29] drm/amd/dal: IRQ Service Harry Wentland
2016-02-11 17:19 ` [PATCH 10/29] drm/amd/dal: GPU Harry Wentland
2016-02-11 17:19 ` [PATCH 11/29] drm/amd/dal: Audio Harry Wentland
2016-02-11 17:19 ` [PATCH 12/29] drm/amd/dal: Bandwidth calculations Harry Wentland
2016-02-11 17:19 ` [PATCH 13/29] drm/amd/dal: Add encoder HW programming Harry Wentland
2016-02-11 17:19 ` [PATCH 14/29] drm/amd/dal: Add clock source " Harry Wentland
2016-02-11 17:19 ` [PATCH 15/29] drm/amd/dal: Add timing generator " Harry Wentland
2016-02-11 17:19 ` [PATCH 16/29] drm/amd/dal: Add surface " Harry Wentland
2016-02-11 17:19 ` [PATCH 17/29] drm/amd/dal: Add framebuffer compression " Harry Wentland
2016-02-11 17:19 ` [PATCH 18/29] drm/amd/dal: Add input pixel processing " Harry Wentland
2016-02-11 17:19 ` [PATCH 19/29] drm/amd/dal: Add output " Harry Wentland
2016-02-11 17:20 ` [PATCH 20/29] drm/amd/dal: Add transform & scaler " Harry Wentland
2016-02-11 17:20 ` [PATCH 21/29] drm/amd/dal: Add Carrizo HW sequencer and resource Harry Wentland
2016-02-11 17:20 ` [PATCH 22/29] drm/amd/dal: Add Tonga/Fiji " Harry Wentland
2016-02-11 17:20 ` [PATCH 23/29] drm/amd/dal: Add empty encoder programming for virtual HW Harry Wentland
2016-02-11 17:20 ` [PATCH 24/29] drm/amd/dal: Add display core Harry Wentland
2016-02-11 17:20 ` [PATCH 25/29] drm/amd/dal: Adding amdgpu_dm for dal Harry Wentland
2016-02-11 17:20 ` [PATCH 26/29] drm/amdgpu: Use dal driver for Carrizo, Tonga, and Fiji Harry Wentland
2016-02-11 17:20 ` [PATCH 27/29] drm/amd/dal: Correctly interpret rotation as bit set Harry Wentland
2016-02-11 21:00 ` Oded Gabbay
2016-02-16 16:46 ` Harry Wentland
2016-02-11 17:20 ` [PATCH 28/29] drm/amd/dal: fix flip clean-up state Harry Wentland
2016-02-11 17:20 ` [PATCH 29/29] drm/amd/dal: Force bw programming for DCE 10 until we start calculate BW Harry Wentland
2016-02-11 20:02 ` [PATCH 00/29] Enabling new DAL display driver for amdgpu on Carrizo and Tonga Mike Lothian
2016-02-11 20:05 ` Wentland, Harry
2016-02-11 20:52 ` Dave Airlie
2016-02-11 21:06 ` Daniel Vetter
2016-02-12 0:57 ` Dave Airlie
2016-02-12 5:34 ` Daniel Vetter
2016-02-13 0:05 ` Wentland, Harry
2016-02-14 11:22 ` Jerome Glisse
2016-02-14 13:23 ` Daniel Vetter
2016-02-17 3:28 ` Harry Wentland
2016-02-14 13:32 ` Rob Clark [this message]
2016-02-14 13:51 ` Daniel Vetter
2016-02-17 3:26 ` Harry Wentland
2016-02-14 14:01 ` Daniel Vetter
2016-02-17 3:32 ` Harry Wentland
2016-02-14 21:44 ` Daniel Stone
2016-02-16 22:27 ` [PATCH v2 00/26] " Harry Wentland
2016-02-16 22:27 ` [PATCH v2 01/26] drm/amd/dal: Add dal headers Harry Wentland
2016-02-16 22:27 ` [PATCH v2 02/26] drm/amd/dal: Add DAL Basic Types and Logger Harry Wentland
2016-02-16 22:27 ` [PATCH v2 03/26] drm/amd/dal: Fixed point arithmetic Harry Wentland
2016-02-16 22:27 ` [PATCH v2 04/26] drm/amd/dal: Asic Capabilities Harry Wentland
2016-02-16 22:27 ` [PATCH v2 05/26] drm/amd/dal: GPIO (General Purpose IO) Harry Wentland
2016-02-16 22:27 ` [PATCH v2 06/26] drm/amd/dal: Adapter Service Harry Wentland
2016-02-16 22:27 ` [PATCH v2 07/26] drm/amd/dal: BIOS Parser Harry Wentland
2016-02-16 22:27 ` [PATCH v2 08/26] drm/amd/dal: I2C Aux Manager Harry Wentland
2016-02-16 22:27 ` [PATCH v2 09/26] drm/amd/dal: IRQ Service Harry Wentland
2016-02-16 22:27 ` [PATCH v2 10/26] drm/amd/dal: GPU Harry Wentland
2016-02-16 22:27 ` [PATCH v2 11/26] drm/amd/dal: Audio Harry Wentland
2016-02-16 22:27 ` [PATCH v2 12/26] drm/amd/dal: Bandwidth calculations Harry Wentland
2016-02-16 22:27 ` [PATCH v2 13/26] drm/amd/dal: Add encoder HW programming Harry Wentland
2016-02-16 22:27 ` [PATCH v2 14/26] drm/amd/dal: Add clock source " Harry Wentland
2016-02-16 22:27 ` [PATCH v2 15/26] drm/amd/dal: Add timing generator " Harry Wentland
2016-02-16 22:27 ` [PATCH v2 16/26] drm/amd/dal: Add surface " Harry Wentland
2016-02-16 22:27 ` [PATCH v2 17/26] drm/amd/dal: Add framebuffer compression " Harry Wentland
2016-02-16 22:27 ` [PATCH v2 18/26] drm/amd/dal: Add input pixel processing " Harry Wentland
2016-02-16 22:27 ` [PATCH v2 19/26] drm/amd/dal: Add output " Harry Wentland
2016-02-16 22:28 ` [PATCH v2 20/26] drm/amd/dal: Add transform & scaler " Harry Wentland
2016-02-16 22:28 ` [PATCH v2 21/26] drm/amd/dal: Add Carrizo HW sequencer and resource Harry Wentland
2016-02-16 22:28 ` [PATCH v2 22/26] drm/amd/dal: Add Tonga/Fiji " Harry Wentland
2016-02-16 22:28 ` [PATCH v2 23/26] drm/amd/dal: Add empty encoder programming for virtual HW Harry Wentland
2016-02-16 22:28 ` [PATCH v2 24/26] drm/amd/dal: Add display core Harry Wentland
2016-02-16 22:28 ` [PATCH v2 25/26] drm/amd/dal: Adding amdgpu_dm for dal Harry Wentland
2016-02-16 22:28 ` [PATCH v2 26/26] drm/amdgpu: Use dal driver for Carrizo, Tonga, and Fiji Harry Wentland
2016-02-29 21:56 ` [PATCH v3 00/26] Enabling new DAL display driver for amdgpu on Carrizo and Tonga Harry Wentland
2016-02-29 21:56 ` [PATCH v3 01/26] drm/amd/dal: Add dal headers Harry Wentland
2016-02-29 21:56 ` [PATCH v3 05/26] drm/amd/dal: GPIO (General Purpose IO) Harry Wentland
2016-02-29 21:56 ` [PATCH v3 07/26] drm/amd/dal: BIOS Parser Harry Wentland
2016-02-29 21:56 ` [PATCH v3 24/26] drm/amd/dal: Add display core Harry Wentland
2016-02-29 21:56 ` [PATCH v3 25/26] drm/amd/dal: Adding amdgpu_dm for dal Harry Wentland
2016-02-29 21:56 ` [PATCH v3 26/26] drm/amdgpu: Use dal driver for Carrizo, Tonga, and Fiji Harry Wentland
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