linux-kernel - Re: [PATCH v7 5/5] media: platform: mtk-mdp3: Add Mediatek MDP3 driver

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Message-ID: <6898a212-6ccf-b668-fc70-cc8fd4bb39f5@xs4all.nl>
Date:   Fri, 3 Sep 2021 11:48:42 +0200
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Moudy Ho <moudy.ho@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     Maoguang Meng <maoguang.meng@...iatek.com>,
        daoyuan huang <daoyuan.huang@...iatek.com>,
        Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Landley <rob@...dley.net>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        tfiga@...omium.org, drinkcat@...omium.org, acourbot@...omium.org,
        pihsun@...omium.org, menghui.lin@...iatek.com,
        sj.huang@...iatek.com, ben.lok@...iatek.com, randy.wu@...iatek.com,
        srv_heupstream@...iatek.com, hsinyi@...gle.com
Subject: Re: [PATCH v7 5/5] media: platform: mtk-mdp3: Add Mediatek MDP3
 driver

On 24/08/2021 12:00, Moudy Ho wrote:
> This patch adds driver for Mediatek's Media Data Path ver.3 (MDP3).
> It provides the following functions:
>   color transform, format conversion, resize, crop, rotate, flip
>   and additional image quality enhancement.
> 
> The MDP3 driver is mainly used for Google Chromebook products to
> import the new architecture to set the HW settings as shown below:
>   User -> V4L2 framework
>     -> MDP3 driver -> SCP (setting calculations)
>       -> MDP3 driver -> CMDQ (GCE driver) -> HW
> 
> Each modules' related operation control is sited in mtk-mdp3-comp.c
> Each modules' register table is defined in file with "mdp_reg_" prefix
> GCE related API, operation control  sited in mtk-mdp3-cmdq.c
> V4L2 m2m device functions are implemented in mtk-mdp3-m2m.c
> Probe, power, suspend/resume, system level functions are defined in
> mtk-mdp3-core.c
> 
> Signed-off-by: Ping-Hsun Wu <ping-hsun.wu@...iatek.com>
> Signed-off-by: daoyuan huang <daoyuan.huang@...iatek.com>
> Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>
> ---
> Depend on:
>    [1] https://patchwork.kernel.org/project/linux-mediatek/patch/20190906115513.159705-9-acourbot@chromium.org/
>    [2] https://patchwork.kernel.org/project/linux-mediatek/patch/20190906115513.159705-10-acourbot@chromium.org/
> ---
>  drivers/media/platform/Kconfig                |   19 +
>  drivers/media/platform/Makefile               |    2 +
>  drivers/media/platform/mtk-mdp3/Makefile      |    6 +
>  .../media/platform/mtk-mdp3/mdp_reg_ccorr.h   |   19 +
>  drivers/media/platform/mtk-mdp3/mdp_reg_isp.h |   27 +
>  .../media/platform/mtk-mdp3/mdp_reg_rdma.h    |   65 +
>  drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h |   39 +
>  .../media/platform/mtk-mdp3/mdp_reg_wdma.h    |   47 +
>  .../media/platform/mtk-mdp3/mdp_reg_wrot.h    |   55 +
>  drivers/media/platform/mtk-mdp3/mtk-img-ipi.h |  280 ++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.c   |  507 +++++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.h   |   46 +
>  .../media/platform/mtk-mdp3/mtk-mdp3-comp.c   | 1307 +++++++++++++++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-comp.h   |  147 ++
>  .../media/platform/mtk-mdp3/mtk-mdp3-core.c   |  329 +++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-core.h   |   75 +
>  .../media/platform/mtk-mdp3/mtk-mdp3-m2m.c    |  801 ++++++++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-m2m.h    |   41 +
>  .../media/platform/mtk-mdp3/mtk-mdp3-regs.c   |  746 ++++++++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-regs.h   |  372 +++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-vpu.c    |  312 ++++
>  .../media/platform/mtk-mdp3/mtk-mdp3-vpu.h    |   78 +
>  22 files changed, 5320 insertions(+)
>  create mode 100644 drivers/media/platform/mtk-mdp3/Makefile
>  create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_ccorr.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_isp.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rdma.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_wdma.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_wrot.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-img-ipi.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-core.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-m2m.c
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-m2m.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.c
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.h
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-vpu.c
>  create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-vpu.h
> 
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index 157c924686e4..b7f331dbe1b5 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -299,6 +299,25 @@ config VIDEO_MEDIATEK_MDP
>  	    To compile this driver as a module, choose M here: the
>  	    module will be called mtk-mdp.
>  
> +config VIDEO_MEDIATEK_MDP3
> +	tristate "Mediatek MDP v3 driver"
> +	depends on MTK_IOMMU

This should probably be:

	depends on MTK_IOMMU || COMPILE_TEST

> +	depends on VIDEO_DEV && VIDEO_V4L2
> +	depends on ARCH_MEDIATEK || COMPILE_TEST
> +	depends on HAS_DMA
> +	select VIDEOBUF2_DMA_CONTIG
> +	select V4L2_MEM2MEM_DEV
> +	select VIDEO_MEDIATEK_VPU
> +	select MTK_CMDQ
> +	select MTK_SCP
> +	default n
> +	help
> +	    It is a v4l2 driver and present in Mediatek MT8183 SoC.
> +	    The driver supports for scaling and color space conversion.
> +
> +	    To compile this driver as a module, choose M here: the
> +	    module will be called mtk-mdp3.
> +
>  config VIDEO_MEDIATEK_VCODEC
>  	tristate "Mediatek Video Codec driver"
>  	depends on MTK_IOMMU || COMPILE_TEST

Regards,

	Hans