This series adds support to the CFE hardware block on RaspberryPi 5. The CFE (Camera Front End) contains a CSI-2 receiver and Front End, a small ISP. To run this, you need the basic RPi5 kernel support plus relevant dts changes to enable the cfe and camera. My work branch with everything needed to run CFE can be found from: git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git rp1-cfe A few notes about the patches: - The original work was done by RaspberryPi, mostly by Naushir Patuck. - The second video node only sets V4L2_CAP_META_CAPTURE instead of both V4L2_CAP_META_CAPTURE and V4L2_CAP_META_CAPTURE like the other nodes. This is a temporary workaround for userspace (libcamera), and hopefully can be removed soon. I have tested this with: - A single IMX219 sensor connected to the RPi5's CSI-2 port - Arducam's UB960 FPD-Link board with four imx219 sensors connected Tomi Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> --- Changes in v3: - Based on v6.11-rc3. The PiSP BE series is now in upstream so no extra dependencies are needed. - Fixed cfe_remove() return value, as the .remove hook has changed - Added Krzysztof's Rb. - Link to v2: https://lore.kernel.org/r/20240620-rp1-cfe-v2-0-b8b48fdba3b3@xxxxxxxxxxxxxxxx Changes in v2: - Change the compatible string back to raspberrypi,rp1-cfe from raspberrypi,rpi5-rp1-cfe - Drop the references to rp1 headers in the DT binding example. This allows compiling the example without the rp1 support. - Fix missing remap lines for mono formats - Fix csi2_pad_set_fmt() so that the format can be changed back to the sink's format from 16-bit or compressed format. - Link to v1: https://lore.kernel.org/r/20240318-rp1-cfe-v1-0-ac6d960ff22d@xxxxxxxxxxxxxxxx --- Tomi Valkeinen (4): media: uapi: Add meta formats for PiSP FE config and stats dt-bindings: media: Add bindings for raspberrypi,rp1-cfe media: raspberrypi: Add support for RP1-CFE media: admin-guide: Document the Raspberry Pi CFE (rp1-cfe) .../admin-guide/media/raspberrypi-rp1-cfe.dot | 27 + .../admin-guide/media/raspberrypi-rp1-cfe.rst | 78 + Documentation/admin-guide/media/v4l-drivers.rst | 1 + .../bindings/media/raspberrypi,rp1-cfe.yaml | 98 + .../userspace-api/media/v4l/meta-formats.rst | 1 + .../userspace-api/media/v4l/metafmt-pisp-fe.rst | 39 + MAINTAINERS | 8 + drivers/media/platform/raspberrypi/Kconfig | 1 + drivers/media/platform/raspberrypi/Makefile | 1 + drivers/media/platform/raspberrypi/rp1-cfe/Kconfig | 14 + .../media/platform/raspberrypi/rp1-cfe/Makefile | 6 + .../media/platform/raspberrypi/rp1-cfe/cfe-fmts.h | 332 +++ .../media/platform/raspberrypi/rp1-cfe/cfe-trace.h | 196 ++ drivers/media/platform/raspberrypi/rp1-cfe/cfe.c | 2524 ++++++++++++++++++++ drivers/media/platform/raspberrypi/rp1-cfe/cfe.h | 43 + drivers/media/platform/raspberrypi/rp1-cfe/csi2.c | 583 +++++ drivers/media/platform/raspberrypi/rp1-cfe/csi2.h | 89 + drivers/media/platform/raspberrypi/rp1-cfe/dphy.c | 175 ++ drivers/media/platform/raspberrypi/rp1-cfe/dphy.h | 27 + .../media/platform/raspberrypi/rp1-cfe/pisp-fe.c | 581 +++++ .../media/platform/raspberrypi/rp1-cfe/pisp-fe.h | 53 + drivers/media/v4l2-core/v4l2-ioctl.c | 2 + .../uapi/linux/media/raspberrypi/pisp_fe_config.h | 273 +++ .../linux/media/raspberrypi/pisp_fe_statistics.h | 64 + include/uapi/linux/videodev2.h | 2 + 25 files changed, 5218 insertions(+) --- base-commit: 7c626ce4bae1ac14f60076d00eafe71af30450ba change-id: 20240314-rp1-cfe-142b628b7214 Best regards, -- Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
