On 8/25/23 15:40, Pekka Paalanen wrote:
Subject:
Re: [RFC]: shmem fd for non-DMA buffer sharing cross drivers
From:
Pekka Paalanen
Date:
8/25/23, 15:40
To:
Hsia-Jun Li
CC:
Tomasz Figa , linux...@kvack.org,
dri-devel@lists.freedesktop.org, Linux Media Mailing List
, hu...@google.com,
a
On 8/23/23 21:15, Tomasz Figa wrote:
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On Wed, Aug 23, 2023 at 4:11 PM Hsia-Jun Li wrote:
On 8/23/23 12:46, Tomasz Figa wrote:
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On 8/23/23 12:46, Tomasz Figa wrote:
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Hi Hsia-Jun,
On Tue, Aug 22, 2023 at 8:14 PM Hsia-Jun Li wrote:
Hello
I would like to introduce a usage of
On 8/23/23 03:55, Nicolas Dufresne wrote:
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Hi,
Le mardi 22 août 2023 à 19:14 +0800, Hsia-Jun Li a écrit :
Hello
I would like to introduce a usage of
Hello
I would like to introduce a usage of SHMEM slimier to DMA-buf, the major
purpose of that is sharing metadata or just a pure container for cross
drivers.
We need to exchange some sort of metadata between drivers, likes dynamic
HDR data between video4linux2 and DRM. Or the graphics frame
Page fault would raise a CPU interrupt, it is not
a good idea.
Signed-off-by: Hsia-Jun(Randy) Li
---
drivers/dma-buf/heaps/cma_heap.c | 26 +++---
1 file changed, 3 insertions(+), 23 deletions(-)
diff --git a/drivers/dma-buf/heaps/cma_heap.c
b/drivers/dma-buf/heaps/cma_hea
From: "Hsia-Jun(Randy) Li"
In Android, we could also call gralloc to allocate a
graphics buffer for the decoder, display or encoder.
In the GNU Linux, we don't have such framework, the only
thing we could have is the GBM.
Unfortunately, some platforms don't have a GPU may not
ship the gbm library
From: Randy Li
Signed-off-by: Randy Li
Signed-off-by: Hsia-Jun(Randy) Li
---
Documentation/gpu/synaptics.rst | 81 +
1 file changed, 81 insertions(+)
create mode 100644 Documentation/gpu/synaptics.rst
diff --git a/Documentation/gpu/synaptics.rst b/Documentatio
From: "Hsia-Jun(Randy) Li"
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mapping
is used is not a part of format.
Signed-off-by: Hsia-Jun(Randy) Li
---
include/uapi/drm/drm_fourcc.h | 75 +++
From: "Hsia-Jun(Randy) Li"
Those pixel formats are used in Synaptics's VideoSmart series SoCs,
likes VS640, VS680. I just disclose the pixel formats used in the video
codecs and display pipeline this time. Actually any device connected to
the MTR module could support those tiling and compressed p
From: "Hsia-Jun(Randy) Li"
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mapping
is used is not a part of format.
Signed-off-by: Hsia-Jun(Randy) Li
---
include/uapi/drm/drm_fourcc.h | 76 +++
From: Randy Li
Signed-off-by: Randy Li
Signed-off-by: Hsia-Jun(Randy) Li
---
Documentation/gpu/drivers.rst | 1 +
Documentation/gpu/synaptics.rst | 104
2 files changed, 105 insertions(+)
create mode 100644 Documentation/gpu/synaptics.rst
diff --git a/Doc
Those pixel formats are used in Synaptics's VideoSmart series SoCs,
likes VS640, VS680. I just disclose the pixel formats used in the video
codecs and display pipeline this time. Actually any device connected to
the MTR module could support those tiling and compressed pixel formats.
https://synapt
On 11/29/22 18:42, Daniel Stone wrote:
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Hi Randy,
On Tue, 29 Nov 2022 at 10:11, Hsia-Jun Li wrote:
Currently, we assume all the pixel formats are
On 11/29/22 18:18, Simon Ser wrote:
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Format modifiers are for the buffer layout only, not for the allocation
parameters, placement, etc. See the doc comm
From: "Hsia-Jun(Randy) Li"
Hello All
Currently, we assume all the pixel formats are multiple planes, devices
could support each component has its own memory plane.
But that may not apply for any device in the world. We could have a
device without IOMMU then this is not impossible.
Besides, when
:
On Wed, Nov 23, 2022 at 10:58:11PM +0800, Jisheng Zhang wrote:
On Wed, Nov 23, 2022 at 05:19:57PM +0800, Hsia-Jun Li wrote:
From: "Hsia-Jun(Randy) Li"
Memory Traffic Reduction(MTR) is a module in Synaptics
VideoSmart platform could process lossless compression image
and cache the t
From: "Hsia-Jun(Randy) Li"
Memory Traffic Reduction(MTR) is a module in Synaptics
VideoSmart platform could process lossless compression image
and cache the tile memory line.
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mappi
From: Randy Li
The pixel formats used in Synpatics video smart platform
are too many. It is impossible to store them in fourcc
namespace.
Signed-off-by: Randy Li
Signed-off-by: Hsia-Jun(Randy) Li
---
.../media/v4l/pixfmt-synaptics.rst| 86 +++
.../userspace-api/med
From: "Hsia-Jun(Randy) Li"
These modifiers would have the same values as the one defined
in drm_fourcc.h, they would just be named in v4l2 style.
Signed-off-by: Hsia-Jun(Randy) Li
---
include/uapi/linux/videodev2.h | 30 ++
1 file changed, 30 insertions(+)
diff --g
From: "Hsia-Jun(Randy) Li"
Signed-off-by: Hsia-Jun(Randy) Li
---
include/uapi/linux/videodev2.h | 20
1 file changed, 20 insertions(+)
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 29da1f4b4578..d00b2e9c0c54 100644
--- a/include/uapi/li
From: "Hsia-Jun(Randy) Li"
Memory Traffic Reduction(MTR) is a module in Synaptics
VideoSmart platform could process lossless compression image
and cache the tile memory line.
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mappi
From: "Hsia-Jun(Randy) Li"
Those pixel formats are used in Synaptics's VideoSmart series SoCs,
likes VS640, VS680. I just disclose the pixel formats used in the video
codecs and display pipeline this time. Actually any device connected to
the MTR module could support those tiled and compressed pi
From: Randy Li
The pixel formats used in Synpatics video smart platform
are too many. It is impossible to store them in fourcc
namespace.
Signed-off-by: Randy Li
---
.../media/v4l/pixfmt-synaptics.rst| 80 +++
.../userspace-api/media/v4l/pixfmt.rst| 1 +
2
From: "Hsia-Jun(Randy) Li"
Memory Traffic Reduction(MTR) is a module in Synaptics
VideoSmart platform could process lossless compression image
and cache the tile memory line.
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mappi
From: "Hsia-Jun(Randy) Li"
Those pixel formats are used in Synaptics's VideoSmart series SoCs,
likes VS640, VS680. I just disclose the pixel formats used in the video
codecs and display pipeline this time. Actually any device connected to
the MTR module could support those tiled and compressed pi
On 8/22/22 22:15, Nicolas Dufresne wrote:
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Le samedi 20 août 2022 à 08:10 +0800, Hsia-Jun Li a écrit :
On 8/20/22 03:17, Nicolas Dufresne wrote
On 8/23/22 14:05, Tomasz Figa wrote:
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On Sat, Aug 20, 2022 at 12:44 AM Hsia-Jun Li wrote:
On 8/19/22 23:28, Nicolas Dufresne wrote:
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On 8/20/22 03:17, Nicolas Dufresne wrote:
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Le vendredi 19 août 2022 à 23:44 +0800, Hsia-Jun Li a écrit :
On 8/19/22 23:28, Nicolas Dufresne wrote
, Hsia-Jun Li wrote:
On 8/18/22 14:06, Tomasz Figa wrote:
On Tue, Aug 9, 2022 at 1:28 AM Hsia-Jun Li wrote:
From: "Hsia-Jun(Randy) Li"
The most of detail has been written in the drm.
This patch still needs a description of the format, which should go to
Documentation/userspace-api
On 8/19/22 07:13, Laurent Pinchart wrote:
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On Thu, Aug 18, 2022 at 02:33:42PM +0800, Hsia-Jun Li wrote:
On 8/18/22 14:06, Tomasz Figa wrote:
On Tue
On 8/19/22 07:16, Laurent Pinchart wrote:
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Hi Hsia-Jun,
Thank you for the patch.
On Tue, Aug 09, 2022 at 12:27:49AM +0800, Hsia-Jun Li wrote:
From
On 8/19/22 07:08, Laurent Pinchart wrote:
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Hi Hsia-Jun,
On Tue, Aug 09, 2022 at 12:27:48AM +0800, Hsia-Jun Li wrote:
From: "Hsia-Jun(Rand
On 8/18/22 14:07, Tomasz Figa wrote:
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Hi Randy,
On Tue, Aug 9, 2022 at 1:28 AM Hsia-Jun Li wrote:
From: "Hsia-Jun(Randy) Li"
Memo
On 8/18/22 14:06, Tomasz Figa wrote:
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Hi Randy,
On Tue, Aug 9, 2022 at 1:28 AM Hsia-Jun Li wrote:
From: "Hsia-Jun(Randy) Li"
The most
On 8/18/22 13:50, Tomasz Figa wrote:
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Hi Randy,
Sorry for the late reply, I went on vacation last week.
On Sun, Aug 7, 2022 at 12:23 AM Hsia-Jun Li
From: "Hsia-Jun(Randy) Li"
Memory Traffic Reduction(MTR) is a module in Synaptics
VideoSmart platform could process lossless compression image
and cache the tile memory line.
Those modifiers only record the parameters would effort pixel
layout or memory layout. Whether physical memory page mappi
From: "Hsia-Jun(Randy) Li"
The most of detail has been written in the drm.
Please notice that the tiled formats here request
one more plane for storing the motion vector metadata.
This buffer won't be compressed, so you can't append
it to luma or chroma plane.
Signed-off-by: Hsia-Jun(Randy) Li
From: "Hsia-Jun(Randy) Li"
Those pixel formats are used in Synaptics's VideoSmart series SoCs,
likes VS640, VS680. I just disclose the pixel formats used in the video
codecs and display pipeline this time. Actually any device with a MTR
module could support those tiled and compressed pixel forma
, 2022 at 3:44 PM Hsia-Jun Li wrote:
On 8/1/22 14:19, Tomasz Figa wrote:
Hello Tomasz
?Hi Randy,
On Mon, Aug 1, 2022 at 5:21 AM wrote:
From: Randy Li
This module is still at a early stage, I wrote this for showing what
APIs we need here.
Let me explain why we need such a module here.
If you
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