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X-MS-Exchange-CrossTenant-Network-Message-Id: 44765d6a-741b-4d45-3263-08d682edea77 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.60.83];Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR02MB4463 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Xilinx MIPI CSI-2 Receiver Subsystem ------------------------------------ The Xilinx MIPI CSI-2 Receiver Subsystem Soft IP consists of a DPHY which gets the data, an optional I2C, a CSI-2 Receiver which parses the data and converts it into AXIS data. This stream output maybe connected to a Xilinx Video Format Bridge. The maximum number of lanes supported is fixed in the design. The number of active lanes can be programmed. For e.g. the design may set maximum lanes as 4 but if the camera sensor has only 1 lane then the active lanes shall be set as 1. The pixel format set in design acts as a filter allowing only the selected data type or RAW8 data packets. The D-PHY register access can be gated in the design. The base address of the DPHY depends on whether the internal Xilinx I2C controller is enabled or not in design. The device driver registers the MIPI CSI2 Rx Subsystem as a V4L2 sub device having 2 pads. The sink pad is connected to the MIPI camera sensor and output pad is connected to the video node. Refer to xlnx,csi2rxss.txt for device tree node details. This driver helps configure the number of active lanes to be set, setting and handling interrupts and IP core enable. It logs the number of events occurring according to their type between streaming ON and OFF. It generates a v4l2 event for each short packet data received. The application can then dequeue this event and get the requisite data from the event structure. It adds new V4L2 controls which are used to get the event counter values and reset the subsystem. The Xilinx CSI-2 Rx Subsystem outputs an AXI4 Stream data which can be used for image processing. This data follows the video formats mentioned in Xilinx UG934 when the Video Format Bridge. v2 - 1/2 - updated the compatible string to latest version supported - removed DPHY related parameters - added CSI v2.0 related property (including VCX for supporting upto 16 virtual channels). - modified csi-pxl-format from string to unsigned int type where the value is as per the CSI specification - Defined port 0 and port 1 as sink and source ports. - Removed max-lanes property as suggested by Rob and Sakari - 2/2 - Fixed comments given by Hyun and Sakari. - Made all bitmask using BIT() and GENMASK() - Removed unused definitions - Removed DPHY access. This will be done by separate DPHY PHY driver. - Added support for CSI v2.0 for YUV 422 10bpc, RAW16, RAW20 and extra virtual channels - Fixed the ports as sink and source - Now use the v4l2fwnode API to get number of data-lanes - Added clock framework support - Removed the close() function - updated the set format function - Support only VFB enabled config Vishal Sagar (2): media: dt-bindings: media: xilinx: Add Xilinx MIPI CSI-2 Rx Subsystem media: v4l: xilinx: Add Xilinx MIPI CSI-2 Rx Subsystem driver .../bindings/media/xilinx/xlnx,csi2rxss.txt | 105 ++ drivers/media/platform/xilinx/Kconfig | 10 + drivers/media/platform/xilinx/Makefile | 1 + drivers/media/platform/xilinx/xilinx-csi2rxss.c | 1609 ++++++++++++++++++++ include/uapi/linux/xilinx-v4l2-controls.h | 14 + include/uapi/linux/xilinx-v4l2-events.h | 28 + 6 files changed, 1767 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/xilinx/xlnx,csi2rxss.txt create mode 100644 drivers/media/platform/xilinx/xilinx-csi2rxss.c create mode 100644 include/uapi/linux/xilinx-v4l2-events.h -- 2.7.4