RE: [Patch v5 00/11] Add MFC V12 support

["Aakarsh Jain" <aakarsh.jain@samsung.com>]

> -----Original Message-----
> From: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> Sent: 06 December 2023 18:29
> To: Aakarsh Jain <aakarsh.jain@samsung.com>; linux-arm-
> kernel@lists.infradead.org; linux-media@vger.kernel.org; linux-
> kernel@vger.kernel.org; devicetree@vger.kernel.org
> Cc: m.szyprowski@samsung.com; andrzej.hajda@intel.com;
> mchehab@kernel.org; krzysztof.kozlowski+dt@linaro.org;
> robh+dt@kernel.org; conor+dt@kernel.org; linux-samsung-
> soc@vger.kernel.org; andi@etezian.org; gost.dev@samsung.com;
> alim.akhtar@samsung.com; aswani.reddy@samsung.com;
> pankaj.dubey@samsung.com; ajaykumar.rs@samsung.com
> Subject: Re: [Patch v5 00/11] Add MFC V12 support
> 
> On 06/12/2023 07:30, Aakarsh Jain wrote:
> > This patch series adds MFC v12 support. MFC v12 is used in Tesla FSD SoC.
> >
> > This adds support for following:
> >
> > -Add support for YV12 and I420 format (3-plane) -Add support for Rate
> > Control, UHD and DMABUF for encoder -Add support for DPB buffers
> > allocation based on MFC requirement
> 
> I'm getting one smatch warning:
> 
> drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c:2453
> s5p_mfc_queue_setup() error: we previously assumed 'ctx->src_fmt' could
> be null (see line 2441)
> 
> And a few kerneldoc warnings:
> 
> drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h:729:
> warning: Function parameter or member 'chroma_size_1' not described in
> 's5p_mfc_ctx'
> drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h:729:
> warning: Function parameter or member 'is_10bit' not described in
> 's5p_mfc_ctx'
> drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h:729:
> warning: Function parameter or member 'is_422' not described in
> 's5p_mfc_ctx'
> drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h:729:
> warning: Function parameter or member 'stride' not described in
> 's5p_mfc_ctx'
> 
> Something for v6.
> 

Sure. Will fix in v6.

Thanks for review!

> Regards,
> 
> 	Hans
> 
> >
> > Changes since v4:
> > -Addressed review comments by Krzysztof Kozlowski.
> > As per discussion included iommus property in dt-schema.
> > -Addressed review comments by Hans Verkuil.
> > Fixed checkpatch warnings with --strict flag enabled.
> > Upstreamed s5p-mfc-v12.fw to linux-firmware.
> > Added comment in the patch 9 regarding loading mfc firmware v12
> > sequentially.
> > -Addressed review comments by Nicolas Dufresne Made use of v4l2-
> common
> > library to get number of planes needed for particular format in patch
> > 4.
> > v4
> > link:https://patchwork.kernel.org/project/linux-media/patch/2023102510
> > 2216.50480-2-aakarsh.jain@samsung.com/
> >
> > Changes since v3:
> > -Removed vp9 codec support for now and just keeping MFC v12 base
> > patches with necessary hardware controls, decoder, encoder and
> > structural changes. Also covers luma dbp, chroma dpb and mv sizes for
> > each codec as per the UM for MFCv12, along with appropriate alignment.
> > v3 link:
> > https://patchwork.kernel.org/project/linux-media/cover/20221011122516.
> > 32135-1-aakarsh.jain@samsung.com/
> >
> > Changes since v2:
> > -Addressed review comments by Rob Herring.
> > This was regarding the errors found by Rob bot in yaml file. File
> > 'samsung,s5p-mfc.yaml' is already converted into json schema and is
> > merged.
> >
> > -Addressed review comments by Krzysztof Kozlowski.
> > This was regarding depricated properties mentioned in s5p-mfc.txt file.
> > Review comment was addressed and 'samsung,s5p-mfc.yaml' is already
> > merged now.
> >
> > -Addressed review comments by Andi Shyti.
> > This was regarding addition of 'MFC_V10PLUS_BITS' macro in
> > 's5p_mfc_common.h file.
> > v2 link:
> > https://patchwork.kernel.org/project/linux-media/cover/20220907064715.
> > 55778-1-smitha.t@samsung.com/
> >
> > Changes since v1:
> > -Addressed review comments by Krzysztof Kozlowski.
> > Separated bug fixes patches, resent again with fix tag and those are
> > merged now.
> > -Added SoC based compatible string.
> >
> > -Addressed review comments by Andrzej Hajda Assigned width64 and
> > height32 variable with ALIGN(ctx->img_..) used in the code in
> > 's5p_mfc_opr_v6.c' file.
> > v1 link:
> > https://patchwork.kernel.org/project/linux-media/patch/20220517125548.
> > 14746-2-smitha.t@samsung.com/
> >
> > Aakarsh Jain (11):
> >   dt-bindings: media: s5p-mfc: Add mfcv12 variant
> >   media: s5p-mfc: Rename IS_MFCV10 macro
> >   media: s5p-mfc: Add initial support for MFCv12
> >   media: s5p-mfc: Add YV12 and I420 multiplanar format support
> >   media: s5p-mfc: Add support for rate controls in MFCv12
> >   media: s5p-mfc: Add support for UHD encoding.
> >   media: s5p-mfc: Add support for DMABUF for encoder
> >   media: s5p-mfc: Set context for valid case before calling try_run
> >   media: s5p-mfc: Load firmware for each run in MFCv12.
> >   media: s5p-mfc: DPB Count Independent of VIDIOC_REQBUF
> >   arm64: dts: fsd: Add MFC related DT enteries
> >
> >  .../bindings/media/samsung,s5p-mfc.yaml       |  18 ++
> >  arch/arm64/boot/dts/tesla/fsd.dtsi            |  21 ++
> >  .../platform/samsung/s5p-mfc/regs-mfc-v12.h   |  52 +++
> >  .../platform/samsung/s5p-mfc/regs-mfc-v7.h    |   1 +
> >  .../platform/samsung/s5p-mfc/regs-mfc-v8.h    |   3 +
> >  .../media/platform/samsung/s5p-mfc/s5p_mfc.c  |  36 ++-
> > .../platform/samsung/s5p-mfc/s5p_mfc_common.h |  29 +-
> >  .../platform/samsung/s5p-mfc/s5p_mfc_ctrl.c   |  10 +-
> >  .../platform/samsung/s5p-mfc/s5p_mfc_dec.c    |  60 +++-
> >  .../platform/samsung/s5p-mfc/s5p_mfc_enc.c    | 149 ++++++---
> >  .../platform/samsung/s5p-mfc/s5p_mfc_opr.h    |  14 +-
> >  .../platform/samsung/s5p-mfc/s5p_mfc_opr_v5.c |  12 +-
> > .../platform/samsung/s5p-mfc/s5p_mfc_opr_v6.c | 300 ++++++++++++++-
> ---
> >  .../platform/samsung/s5p-mfc/s5p_mfc_opr_v6.h |   7 +-
> >  14 files changed, 563 insertions(+), 149 deletions(-)  create mode
> > 100644 drivers/media/platform/samsung/s5p-mfc/regs-mfc-v12.h
> >