linux-kernel - Re: [PATCH v5 0/5] Add support for video hardware codec of STMicroelectronics STM32 SoC series

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Message-ID: <769a1510-f8d2-4095-9879-42f413141dee@gmail.com>
Date: Thu, 21 Dec 2023 13:40:42 +0100
From: Alex Bee <knaerzche@...il.com>
To: Hugues Fruchet <hugues.fruchet@...s.st.com>,
 Nicolas Dufresne <nicolas.dufresne@...labora.com>
Cc: Marco Felsch <m.felsch@...gutronix.de>, Adam Ford <aford173@...il.com>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Andrzej Pietrasiewicz <andrzej.p@...labora.com>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Benjamin Gaignard <benjamin.gaignard@...labora.com>,
 Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
 Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, linux-kernel@...r.kernel.org,
 Daniel Almeida <daniel.almeida@...labora.com>,
 Heiko Stuebner <heiko@...ech.de>, Hans Verkuil <hverkuil@...all.nl>,
 Rob Herring <robh+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 linux-stm32@...md-mailman.stormreply.com,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 devicetree@...r.kernel.org, Maxime Coquelin <mcoquelin.stm32@...il.com>,
 linux-media@...r.kernel.org, Alexandre Torgue
 <alexandre.torgue@...s.st.com>,
 Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Subject: Re: [PATCH v5 0/5] Add support for video hardware codec of
 STMicroelectronics STM32 SoC series

Hi Hugues, Hi Nicolas,

is there any specific reason I'm not understanding / seeing why this is 
added in two seperate vdec* / venc* files and not a single vpu* file? Is 
it only for the seperate clocks (-names) / irqs (-names) / callbacks? 
Those are defined per variant and perfectly fit in a single file holding 
one vdec and one venc variant.

Alex

Am 21.12.23 um 09:47 schrieb Hugues Fruchet:
> This patchset introduces support for VDEC video hardware decoder
> and VENC video hardware encoder of STMicroelectronics STM32MP25
> SoC series.
> 
> This initial support implements H264 decoding, VP8 decoding and
> JPEG encoding.
> 
> This has been tested on STM32MP257F-EV1 evaluation board.
> 
> ===========
> = history =
> ===========
> version 5:
>     - Precise that video decoding as been successfully tested up to full HD
>     - Add Nicolas Dufresne reviewed-by
> 
> version 4:
>     - Fix comments from Nicolas about dropping encoder raw steps
> 
> version 3:
>     - Fix remarks from Krzysztof Kozlowski:
>      - drop "items", we keep simple enum in such case
>      - drop second example - it is the same as the first
>     - Drop unused node labels as suggested by Conor Dooley
>     - Revisit min/max resolutions as suggested by Nicolas Dufresne
> 
> version 2:
>     - Fix remarks from Krzysztof Kozlowski on v1:
>      - single video-codec binding for both VDEC/VENC
>      - get rid of "-names"
>      - use of generic node name "video-codec"
> 
> version 1:
>    - Initial submission
> 
> Hugues Fruchet (5):
>    dt-bindings: media: Document STM32MP25 VDEC & VENC video codecs
>    media: hantro: add support for STM32MP25 VDEC
>    media: hantro: add support for STM32MP25 VENC
>    arm64: dts: st: add video decoder support to stm32mp255
>    arm64: dts: st: add video encoder support to stm32mp255
> 
>   .../media/st,stm32mp25-video-codec.yaml       |  50 ++++++++
>   arch/arm64/boot/dts/st/stm32mp251.dtsi        |  12 ++
>   arch/arm64/boot/dts/st/stm32mp255.dtsi        |  17 +++
>   drivers/media/platform/verisilicon/Kconfig    |  14 ++-
>   drivers/media/platform/verisilicon/Makefile   |   4 +
>   .../media/platform/verisilicon/hantro_drv.c   |   4 +
>   .../media/platform/verisilicon/hantro_hw.h    |   2 +
>   .../platform/verisilicon/stm32mp25_vdec_hw.c  |  92 ++++++++++++++
>   .../platform/verisilicon/stm32mp25_venc_hw.c  | 115 ++++++++++++++++++
>   9 files changed, 307 insertions(+), 3 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/media/st,stm32mp25-video-codec.yaml
>   create mode 100644 drivers/media/platform/verisilicon/stm32mp25_vdec_hw.c
>   create mode 100644 drivers/media/platform/verisilicon/stm32mp25_venc_hw.c
>