Hi Hans, Tomasz, On Thu, 2019-03-14 at 16:40 +0800, Hans Verkuil wrote: > Hi Jerry-ch Chen, > > On 2/20/19 8:48 AM, Jerry-ch Chen wrote: > > Hello, > > > > This is the first version of the RFC patch series adding Face Detection > > (FD) driver on Mediatek mt8183 SoC, which will be used in camera features > > on CrOS application. It belongs to the first Mediatek's camera driver > > series based on V4L2 and media controller framework. I posted the main part > > of the FD driver as RFC to discuss first and would like some review > > comments on the overall structure of the driver. > > > > Face Detection (FD) unit provide hardware accelerated face detection > > feature. It can detect different sizes of faces in a given image. > > Furthermore, it has the capability to detect the faces of Rotation-in-Plane > > from -180 to +180 degrees and Rotation-off-Plane from -90 to +90 degrees. > > > > The driver is implemented with V4L2 and media controller framework. We have > > the following entities describing the FD path. > > Just a high-level comment before you post the next version of this series: > > Please compile the latest version of v4l2-compliance (part of > git://linuxtv.org/v4l-utils.git) and run it against your driver: > > v4l2-compliance -m /dev/mediaX > > Whenever you post a new version of this series, please do a 'git pull' of > the v4l-utils repo, recompile and retest with v4l2-compliance and post the > test results in the cover letter. > > Obviously, there should be no FAILs and probably no warnings. > > I suspect that streaming (e.g. adding the -s10 option to v4l2-compliance) > probably won't work since v4l2-compliance doesn't know about the meta data > formats. > > Regards, > > Hans > Thanks for comments, I am reworking FD driver based on general comments of P1 and DIP driver. After that, I will upload the RFC V1 patch with the results of v4l2-compliance in the cover-letter. Best Regards, Jerry > > > > 1. Meta input (output video device): connects to FD sub device. It accepts > > the input parameter buffer from userspace. The metadata interface used > > currently is only a temporary solution to kick off driver development > > and is not ready for reviewed yet. > > > > 2. RAW (output video device): connects to FD sub device. It accepts input > > image buffer from userspace. > > > > 3. FD (sub device): connects to Meta output. When processing an image, > > FD hardware only returns the statistics of detected faces so it needs > > only one capture video devices to return the streaming data to the user. > > > > 4. Meta output (capture video device): Return the result of detected faces > > as metadata output. > > > > The overall file structure of the FD driver is as following: > > > > * mtk_fd-dev-ctx-core.c: Implements common software flow of FD driver. > > * mtk_fd-v4l2.c: Static FD contexts configuration. > > * mtk_fd.c: Controls the hardware flow. > > * mtk_fd-dev.c: Implements context-independent flow. > > * mtk_fd-ctrl.c: Handles the HW ctrl request from userspace. > > * mtk_fd-smem-drv.c: Provides the shared memory management required > > operation. We reserved a memory region for the co-processor and FD to > > exchange the hardware configuration data. > > * mtk_fd-v4l2-util.c: Implements V4L2 and vb2 ops. > > > > Jerry-ch Chen (7): > > dt-bindings: mt8183: Add binding for FD shared memory > > dts: arm64: mt8183: Add FD shared memory node > > dt-bindings: mt8183: Added FD-SMEM dt-bindings > > dt-bindings: mt8183: Added FD dt-bindings > > dts: arm64: mt8183: Add FD nodes > > media: platform: Add Mediatek FD driver KConfig > > platform: mtk-isp: Add Mediatek FD driver > > > > .../devicetree/bindings/media/mediatek,fd_smem.txt | 28 + > > .../bindings/media/mediatek,mt8183-fd.txt | 30 + > > .../mediatek,reserve-memory-fd_smem.txt | 44 + > > arch/arm64/boot/dts/mediatek/mt8183.dtsi | 28 + > > drivers/media/platform/Kconfig | 2 + > > drivers/media/platform/mtk-isp/Kconfig | 10 + > > drivers/media/platform/mtk-isp/Makefile | 16 + > > drivers/media/platform/mtk-isp/fd/Makefile | 38 + > > drivers/media/platform/mtk-isp/fd/mtk_fd-core.h | 157 +++ > > drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h | 299 ++++++ > > .../platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c | 917 +++++++++++++++++ > > drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c | 355 +++++++ > > drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h | 198 ++++ > > .../media/platform/mtk-isp/fd/mtk_fd-smem-drv.c | 452 +++++++++ > > drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h | 25 + > > .../media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c | 1046 ++++++++++++++++++++ > > drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c | 115 +++ > > drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h | 36 + > > drivers/media/platform/mtk-isp/fd/mtk_fd.c | 730 ++++++++++++++ > > drivers/media/platform/mtk-isp/fd/mtk_fd.h | 127 +++ > > 20 files changed, 4653 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/media/mediatek,fd_smem.txt > > create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8183-fd.txt > > create mode 100644 Documentation/devicetree/bindings/reserved-memory/mediatek,reserve-memory-fd_smem.txt > > create mode 100644 drivers/media/platform/mtk-isp/Kconfig > > create mode 100644 drivers/media/platform/mtk-isp/Makefile > > create mode 100644 drivers/media/platform/mtk-isp/fd/Makefile > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-core.h > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-ctx.h > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-dev-ctx-core.c > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-dev.c > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-dev.h > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-smem-drv.c > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-smem.h > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2-util.c > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.c > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd-v4l2.h > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd.c > > create mode 100644 drivers/media/platform/mtk-isp/fd/mtk_fd.h > > >
