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Date: Thu, 11 Mar 2021 20:12:18 +0100
From: Hans Verkuil <hverkuil@...all.nl>
To: Robert Foss <robert.foss@...aro.org>, agross@...nel.org,
bjorn.andersson@...aro.org, todor.too@...il.com,
mchehab@...nel.org, robh+dt@...nel.org,
angelogioacchino.delregno@...ainline.org,
linux-arm-msm@...r.kernel.org, linux-media@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
AngeloGioacchino Del Regno <kholk11@...il.com>,
Sakari Ailus <sakari.ailus@....fi>,
Andrey Konovalov <andrey.konovalov@...aro.org>
Cc: Rob Herring <robh@...nel.org>, Tomasz Figa <tfiga@...omium.org>,
Azam Sadiq Pasha Kapatrala Syed <akapatra@...cinc.com>,
Sarvesh Sridutt <Sarvesh.Sridutt@...rtwirelesscompute.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Jonathan Marek <jonathan@...ek.ca>
Subject: Re: [PATCH v7 00/22] Add support for the SDM845 Camera Subsystem
On 11/03/2021 19:09, Robert Foss wrote:
> This series implements support for the camera subsystem found in
> the SDM845 SOCs and the Titan 170 ISP. The support is partial
> in that it implements CSIPHY, CSID, and partial VFE support.
>
> The Titan generation of the ISP diverges a fair amount from the
> design of the previous architecture generation, CAMSS. As a result
> some pretty invasive refactoring is done in this series. It also
> means that at this time we're unable to implement support for all
> of the IP blocks contained. This is due to a combination of legal
> considerations with respect to the IP and its owner Qualcomm and
> time & man hour constrains on the Linaro side.
>
> The CSIPHY (CSI Physical Layer) & CSID (CSI Decoder) support is
> complete, but the VFE (Video Front End, which is referred to as IFE
> (Image Front End) in the Titan generation of ISPs) only has support
> for the RDI (Raw Dump Interface) which allows the raw output of
> the CSID to be written to memory.
>
> The 2nd interface implemented in the VFE silicon is the PIX
> interface, and camss does not support it for this generation of ISPs.
> The reason for this is that the PIX interface is used for sending
> image data to the BPS (Bayer Processing Section) & IPE (Image
> Processing Engine), but both of these units are beyond the scope
> of enabling basic ISP functionality for the SDM845.
>
> Since the Titan architecture generation diverges quite a bit from
> the CAMSS generation, a lot of pretty major refactoring is carried
> out in this series. Both the CSID & VFE core paths are made more
> general and hardware version specific parts are broken out.
> The CSIPHY didn't require quite as radical changes and therefore
> keeps its current form.
>
> Tested on:
> - Qcom RB3 / db845c + camera mezzanine, which is SDM845 based
> - db410c + D3 Camera mezzanine, which is APQ8016 based
>
> Branch:
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v1
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v2
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v3
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v4
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v5
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v6
> - https://git.linaro.org/people/robert.foss/linux.git/log/?h=camss_sdm845_v7
>
Please check the patches in this series with 'scripts/checkpatch.pl --strict'.
I got a bunch of warnings, most seemed trivial to fix.
When I compiled this series I also got these sparse warnings:
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-4-1.c:959:30: warning: symbol
'vfe_ops_gen1_4_1' was not declared. Should it be static?
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-4-1.c:959:30: warning: symbol
'vfe_ops_gen1_4_1' was not declared. Should it be static?
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-1.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-7.c drivers/media/platform/qcom/camss/camss-vfe-4-7.c:1151:30: warning: symbol
'vfe_ops_gen1_4_7' was not declared. Should it be static?
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-7.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-7.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-7.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-7.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-170.c drivers/media/platform/qcom/camss/camss-vfe-170.c:770:26: warning: symbol
'vfe_isr_ops_170' was not declared. Should it be static?
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-8.c drivers/media/platform/qcom/camss/camss-vfe-4-8.c:1140:30: warning: symbol
'vfe_ops_gen1_4_8' was not declared. Should it be static?
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-8.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-8.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-8.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
SPARSE:drivers/media/platform/qcom/camss/camss-vfe-4-8.c drivers/media/platform/qcom/camss/camss-vfe-gen1.h:69:31: error: marked inline, but
without a definition
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
And these smatch warnings (a lot of overlap with sparse):
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-csid.h:66:27: warning: 'csid_testgen_modes' defined but not used [-Wunused-const-variable=]
drivers/media/platform/qcom/camss/camss-vfe-170.c:422 vfe_halt() warn: ignoring unreachable code.
drivers/media/platform/qcom/camss/camss-vfe-gen1.c:26 vfe_gen1_halt() warn: ignoring unreachable code.
Regards,
Hans
>
> Robert Foss (22):
> media: camss: Fix vfe_isr_comp_done() documentation
> media: camss: Fix vfe_isr comment typo
> media: camss: Replace trace_printk() with dev_dbg()
> media: camss: Add CAMSS_845 camss version
> media: camss: Make ISPIF subdevice optional
> media: camss: Refactor VFE HW version support
> media: camss: Add support for VFE hardware version Titan 170
> media: camss: Add missing format identifiers
> media: camss: Refactor CSID HW version support
> media: camss: Add support for CSID hardware version Titan 170
> media: camss: Add support for CSIPHY hardware version Titan 170
> media: camss: Refactor VFE power domain toggling
> media: camss: Enable SDM845
> dt-bindings: media: camss: Add qcom,msm8916-camss binding
> dt-bindings: media: camss: Add qcom,msm8996-camss binding
> dt-bindings: media: camss: Add qcom,sdm660-camss binding
> dt-bindings: media: camss: Add qcom,sdm845-camss binding
> MAINTAINERS: Change CAMSS documentation to use dtschema bindings
> media: dt-bindings: media: Remove qcom,camss documentation
> arm64: dts: sdm845: Add CAMSS ISP node
> arm64: dts: sdm845-db845c: Configure regulators for camss node
> arm64: dts: sdm845-db845c: Enable ov8856 sensor and connect to ISP
>
> .../devicetree/bindings/media/qcom,camss.txt | 236 ----
> .../bindings/media/qcom,msm8916-camss.yaml | 256 ++++
> .../bindings/media/qcom,msm8996-camss.yaml | 387 ++++++
> .../bindings/media/qcom,sdm660-camss.yaml | 398 ++++++
> .../bindings/media/qcom,sdm845-camss.yaml | 371 +++++
> MAINTAINERS | 2 +-
> arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 23 +-
> arch/arm64/boot/dts/qcom/sdm845.dtsi | 135 ++
> drivers/media/platform/qcom/camss/Makefile | 6 +
> .../platform/qcom/camss/camss-csid-170.c | 601 +++++++++
> .../platform/qcom/camss/camss-csid-4-1.c | 329 +++++
> .../platform/qcom/camss/camss-csid-4-7.c | 405 ++++++
> .../platform/qcom/camss/camss-csid-gen1.h | 27 +
> .../platform/qcom/camss/camss-csid-gen2.h | 39 +
> .../media/platform/qcom/camss/camss-csid.c | 621 +--------
> .../media/platform/qcom/camss/camss-csid.h | 164 ++-
> .../qcom/camss/camss-csiphy-3ph-1-0.c | 179 ++-
> .../media/platform/qcom/camss/camss-csiphy.c | 66 +-
> .../media/platform/qcom/camss/camss-ispif.c | 119 +-
> .../media/platform/qcom/camss/camss-ispif.h | 3 +-
> .../media/platform/qcom/camss/camss-vfe-170.c | 806 +++++++++++
> .../media/platform/qcom/camss/camss-vfe-4-1.c | 144 +-
> .../media/platform/qcom/camss/camss-vfe-4-7.c | 277 ++--
> .../media/platform/qcom/camss/camss-vfe-4-8.c | 1200 +++++++++++++++++
> .../platform/qcom/camss/camss-vfe-gen1.c | 763 +++++++++++
> .../platform/qcom/camss/camss-vfe-gen1.h | 110 ++
> drivers/media/platform/qcom/camss/camss-vfe.c | 847 +-----------
> drivers/media/platform/qcom/camss/camss-vfe.h | 129 +-
> .../media/platform/qcom/camss/camss-video.c | 52 +
> drivers/media/platform/qcom/camss/camss.c | 407 +++++-
> drivers/media/platform/qcom/camss/camss.h | 15 +-
> 31 files changed, 7069 insertions(+), 2048 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/media/qcom,camss.txt
> create mode 100644 Documentation/devicetree/bindings/media/qcom,msm8916-camss.yaml
> create mode 100644 Documentation/devicetree/bindings/media/qcom,msm8996-camss.yaml
> create mode 100644 Documentation/devicetree/bindings/media/qcom,sdm660-camss.yaml
> create mode 100644 Documentation/devicetree/bindings/media/qcom,sdm845-camss.yaml
> create mode 100644 drivers/media/platform/qcom/camss/camss-csid-170.c
> create mode 100644 drivers/media/platform/qcom/camss/camss-csid-4-1.c
> create mode 100644 drivers/media/platform/qcom/camss/camss-csid-4-7.c
> create mode 100644 drivers/media/platform/qcom/camss/camss-csid-gen1.h
> create mode 100644 drivers/media/platform/qcom/camss/camss-csid-gen2.h
> create mode 100644 drivers/media/platform/qcom/camss/camss-vfe-170.c
> create mode 100644 drivers/media/platform/qcom/camss/camss-vfe-4-8.c
> create mode 100644 drivers/media/platform/qcom/camss/camss-vfe-gen1.c
> create mode 100644 drivers/media/platform/qcom/camss/camss-vfe-gen1.h
>
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