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For example, the PX30 Video Input Processor (VIP) is able to receive video data via the Digital Video Port (DVP, a parallel data interface) and transfer it into system memory using a double-buffering mechanism called ping-pong mode. The RK3568 Video Capture (VICAP) unit, on the other hand, features a DVP and a MIPI CSI-2 receiver that can receive video data independently (both using the ping-pong scheme). The different variants may have additional features, such as scaling and/or cropping. Finally, the RK3588 VICAP unit constitutes an essential piece of the camera interface with one DVP, six MIPI CSI-2 receivers, scale/crop units, and a data path multiplexer (to scaler units, to ISP, ...). The v4 of the series adds a media controller centric V4L2 driver for the Rockchip CIF with - support for the PX30 VIP (not tested, though, due to the lack of HW) - support for the RK3568 VICAP DVP - support for the RK3568 VICAP MIPI CSI-2 receiver - abstraction for the ping-pong scheme to allow for future extensions - abstraction for the INTERFACE and CROP parts to allow for future extensions - initial support for different virtual channels (not tested, though, due to the lack of HW) The patches are functional and have been tested successfully on a custom RK3568 board including the ITE Tech. IT6801 HDMI receiver and the Sony IMX415 image sensor as subdevices attached to the DVP and the MIPI CSI-2 receiver, respectively. The IT6801 driver still needs some loving care but shall be submitted as well at some point. Please note that the MIPI CSI-2 receiver requires a patch w.r.t. critical clocks [0]. However, several features are not yet addressed, such as - support for the RK3588 variant (-> next item on my TODO) - support for the scaling unit in the PX30 (-> cannot do due to the lack of HW) - support for the interface to the Rockchip ISP in the RK3568 (apparently, data receive via VICAP DVP and the VICAP MIPI CSI-2 receiver can be processed by the RK3568 ISP) - support for the MUX/SCALE/TOISP block in the RK3588 VICAP (which provides the base for image processing on the RK3588) Looking forward to your comments! [0] https://lore.kernel.org/linux-rockchip/20250210-rk3568-hclk-vi-v1-1-9ade2626f638@wolfvision.net/ To: Mehdi Djait To: Maxime Chevallier To: Théo Lebrun To: Gerald Loacker To: Thomas Petazzoni To: Sakari Ailus To: Laurent Pinchart To: Mauro Carvalho Chehab To: Rob Herring To: Krzysztof Kozlowski To: Conor Dooley To: Heiko Stuebner To: Kever Yang To: Nicolas Dufresne To: Sebastian Fricke To: Sebastian Reichel To: Paul Kocialkowski To: Alexander Shiyan To: Val Packett To: Rob Herring To: Philipp Zabel Cc: linux-media@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Signed-off-by: Michael Riesch Changes in v4: - added support for the MIPI CSI-2 receiver (new patches 4, 6, 7, 10) - fixed asserts on stream stop - fixed register address lookup - fixed link validiation callback - fixed issues by Rob's bot, kernel test robot, and media-ci - Link to v3: https://lore.kernel.org/r/20250206-v6-8-topic-rk3568-vicap-v3-0-69d1f19e5c40@wolfvision.net Changes in v3: - renamed the driver "cif" -> "rkcif" - rebased onto v6.14-rc1 - abstracted the generic INTERFACE+CROP part - addressed comments by Rob and Sakari - added V4L2 MPLANE formats to DVP - added patch that enables the RK3568 VICAP DVP on PF5 IO Expander - fixed formatting issues raised by media-ci bot - Link to v2: https://lore.kernel.org/r/20241217-v6-8-topic-rk3568-vicap-v2-0-b1d488fcc0d3@wolfvision.net Changes in v2: - merged with Mehdi's v13 - refactored the complete driver towards a media controller centric driver - abstracted the generic ping-pong stream (can be used for DVP as well as for CSI-2) - switched to MPLANE API - added support for notifications - Link to v1: https://lore.kernel.org/r/20240220-v6-8-topic-rk3568-vicap-v1-0-2680a1fa640b@wolfvision.net --- Mehdi Djait (2): media: dt-bindings: media: add bindings for rockchip px30 vip arm64: dts: rockchip: add the vip node to px30 Michael Riesch (9): media: dt-bindings: media: video-interfaces: add defines for sampling modes media: dt-bindings: media: add bindings for rockchip rk3568 vicap media: dt-bindings: media: add bindings for rockchip mipi csi host media: rockchip: add a driver for the rockchip camera interface media: rockchip: rkcif: add driver for mipi csi-2 host media: rockchip: rkcif: add support for mipi csi-2 receiver arm64: dts: rockchip: add vicap node to rk356x arm64: dts: rockchip: add mipi csi host node to rk356x arm64: dts: rockchip: enable vicap dvp on wolfvision pf5 io expander .../bindings/media/rockchip,px30-vip.yaml | 123 +++ .../bindings/media/rockchip,rk3568-mipi-csi.yaml | 123 +++ .../bindings/media/rockchip,rk3568-vicap.yaml | 168 ++++ MAINTAINERS | 10 + arch/arm64/boot/dts/rockchip/px30.dtsi | 12 + .../rk3568-wolfvision-pf5-io-expander.dtso | 20 + arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 76 ++ drivers/media/platform/rockchip/Kconfig | 1 + drivers/media/platform/rockchip/Makefile | 1 + drivers/media/platform/rockchip/rkcif/Kconfig | 15 + drivers/media/platform/rockchip/rkcif/Makefile | 8 + .../platform/rockchip/rkcif/rkcif-capture-dvp.c | 858 +++++++++++++++++++++ .../platform/rockchip/rkcif/rkcif-capture-dvp.h | 24 + .../platform/rockchip/rkcif/rkcif-capture-mipi.c | 715 +++++++++++++++++ .../platform/rockchip/rkcif/rkcif-capture-mipi.h | 22 + .../media/platform/rockchip/rkcif/rkcif-common.h | 236 ++++++ drivers/media/platform/rockchip/rkcif/rkcif-dev.c | 307 ++++++++ .../platform/rockchip/rkcif/rkcif-interface.c | 421 ++++++++++ .../platform/rockchip/rkcif/rkcif-interface.h | 30 + .../platform/rockchip/rkcif/rkcif-mipi-csi-host.c | 731 ++++++++++++++++++ drivers/media/platform/rockchip/rkcif/rkcif-regs.h | 154 ++++ .../media/platform/rockchip/rkcif/rkcif-stream.c | 622 +++++++++++++++ .../media/platform/rockchip/rkcif/rkcif-stream.h | 31 + include/dt-bindings/media/video-interfaces.h | 4 + 24 files changed, 4712 insertions(+) --- base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b change-id: 20240220-v6-8-topic-rk3568-vicap-b9b3f9925f44 Best regards,