linux-kernel - [PATCH v2 RFC/WIP 0/9] Add sa8775p camss support

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Message-ID: <20250427070135.884623-1-quic_vikramsa@quicinc.com>
Date: Sun, 27 Apr 2025 12:31:26 +0530
From: Vikram Sharma <quic_vikramsa@...cinc.com>
To: <rfoss@...nel.org>, <todor.too@...il.com>, <bryan.odonoghue@...aro.org>,
        <mchehab@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <andersson@...nel.org>,
        <konradybcio@...nel.org>, <hverkuil-cisco@...all.nl>,
        <cros-qcom-dts-watchers@...omium.org>, <catalin.marinas@....com>,
        <will@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <quic_vikramsa@...cinc.com>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 RFC/WIP 0/9] Add sa8775p camss support

From: Vikram Sharma <vikramsa@....qualcomm.com>

Posting these changes as RFC/WIP because there is some renaming done for
existing files so that same files can be used for multiple vfe/csid
version.
 
SA8775P is a Qualcomm SoC. This series adds bindings and devicetree to bring
up CSIPHY, TPG, CSID, VFE/RDI interfaces in SA8775P.

SA8775P provides
- 2 x VFE, 3 RDI per VFE
- 5 x VFE Lite, 6 RDI per VFE
- 2 x CSID
- 5 x CSID Lite
- 3 x TPG
- 4 x CSIPHY
   
Changes compared to v1:
- Renaming camss-vfe-780.c to camss-vfe-gen2.c and camss-csid-780 to
  camss-csid-gen3 to avoid code duplication for SA8775P.SA877P have csid
  690 and vfe 690 which is almost same as csid/vfe 780 with very minor
  change in register bitfield.
- Restructure vfe and csid addition to reuse existing files.
- Updated cisd-lite and vfe-lite interuppt names.
- add enumeration changes as seprate patch. 
- Update required fileds in bindings.
- Link to v1:
  DT: https://lore.kernel.org/linux-arm-msm/20250210155605.575367-1-quic_vikramsa@quicinc.com/
  Driver: https://lore.kernel.org/linux-media/20250210162843.609337-1-quic_vikramsa@quicinc.com/

Sanity check for these patches:
- make CHECK_DTBS=y W=1 DT_SCHEMA_FILES=media/qcom,sa8775p-camss.yaml
- make DT_CHECKER_FLAGS=-m W=1
  DT_SCHEMA_FILES=media/qcom,sa8775p-camss.yaml dt_binding_check
- checkpatch.pl
- Smatch: make CHECK="smatch --full-path" M=drivers/media/platform/qcom/camss/
- Sparse: make C=2 M=drivers/media/platform/qcom/camss/
- make -j32 W=1

We have tested this on qcs9100-ride board with 'Test Pattern Generator'
TPG driver support will be posted in a follow up series.

Tested with following commands:
- media-ctl -d /dev/media0 --reset
- yavta --no-query -w '0x009f0903 0' /dev/v4l-subdev0
- media-ctl -d /dev/media0 -V '"msm_tpg0":0[fmt:SRGGB10/1920x1080
  field:none]'
- media-ctl -d /dev/media0 -V '"msm_csid0":0[fmt:SRGGB10/1920x1080
  field:none]'
- media-ctl -d /dev/media0 -V '"msm_vfe0_rdi0":0[fmt:SRGGB10/1920x1080
  field:none]'
- media-ctl -d /dev/media0 -l '"msm_tpg0":1->"msm_csid0":0[1]'
- media-ctl -d /dev/media0 -l '"msm_csid0":1->"msm_vfe0_rdi0":0[1]'
- yavta --no-query -w '0x009f0903 9' /dev/v4l-subdev0
- yavta -B capture-mplane -n 5 -f SRGGB10P -s 1920x1080 /dev/video0
  --capture=7

Signed-off-by: Vikram Sharma <quic_vikramsa@...cinc.com>

Vikram Sharma (9):
  media: qcom: camss: add generic csid handling in csid gen3
  media: qcom: camss: add generic vfe handling in vfe gen3
  media: dt-bindings: Add qcom,sa8775p-camss
  arm64: dts: qcom: sa8775p: Add support for camss
  media: qcom: camss: Add sa8775p compatible
  media: qcom: camss: Add support for CSIPHY 690
  media: qcom: camss: Add support for CSID for sa8775p
  media: qcom: camss: Add support for VFE 690
  media: qcom: camss: Enumerate resources for SA8775P

 .../bindings/media/qcom,sa8775p-camss.yaml    | 352 +++++++++++++
 arch/arm64/boot/dts/qcom/sa8775p.dtsi         | 187 +++++++
 drivers/media/platform/qcom/camss/Makefile    |   4 +-
 .../{camss-csid-780.c => camss-csid-gen3.c}   |  42 +-
 .../{camss-csid-780.h => camss-csid-gen3.h}   |   9 +-
 .../media/platform/qcom/camss/camss-csid.h    |   2 +-
 .../qcom/camss/camss-csiphy-3ph-1-0.c         |  84 ++++
 .../media/platform/qcom/camss/camss-csiphy.c  |   5 +
 .../media/platform/qcom/camss/camss-csiphy.h  |   1 +
 .../{camss-vfe-780.c => camss-vfe-gen3.c}     |   9 +-
 drivers/media/platform/qcom/camss/camss-vfe.c |   5 +-
 drivers/media/platform/qcom/camss/camss-vfe.h |   2 +-
 drivers/media/platform/qcom/camss/camss.c     | 461 +++++++++++++++++-
 drivers/media/platform/qcom/camss/camss.h     |   1 +
 14 files changed, 1130 insertions(+), 34 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml
 rename drivers/media/platform/qcom/camss/{camss-csid-780.c => camss-csid-gen3.c} (87%)
 rename drivers/media/platform/qcom/camss/{camss-csid-780.h => camss-csid-gen3.h} (84%)
 rename drivers/media/platform/qcom/camss/{camss-vfe-780.c => camss-vfe-gen3.c} (95%)

-- 
2.25.1