new file mode 100644
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Video4Linux2 generic ISP parameters and statistics support
+ *
+ * Copyright (C) 2025 Ideas On Board Oy
+ * Author: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
+ */
+
+#ifndef _V4L2_ISP_H_
+#define _V4L2_ISP_H_
+
+#include <linux/stddef.h>
+#include <linux/types.h>
+
+/**
+ * enum v4l2_isp_params_version - V4L2 ISP parameters versioning
+ *
+ * @V4L2_ISP_PARAMS_VERSION_V0: First version of the V4L2 ISP parameters format
+ * (for compatibility)
+ * @V4L2_ISP_PARAMS_VERSION_V1: First version of the V4L2 ISP parameters format
+ *
+ * V0 and V1 are identical in order to support drivers compatible with the V4L2
+ * ISP parameters format already upstreamed which use either 0 or 1 as their
+ * versioning identifier. Both V0 and V1 refers to the first version of the
+ * V4L2 ISP parameters format.
+ *
+ * Future revisions of the V4L2 ISP parameters format should start from the
+ * value of 2.
+ */
+enum v4l2_isp_params_version {
+ V4L2_ISP_PARAMS_VERSION_V0 = 0,
+ V4L2_ISP_PARAMS_VERSION_V1
+};
+
+#define V4L2_ISP_PARAMS_FL_BLOCK_DISABLE (1U << 0)
+#define V4L2_ISP_PARAMS_FL_BLOCK_ENABLE (1U << 1)
+
+/*
+ * Reserve the first 8 bits for V4L2_ISP_PARAMS_FL_* flag.
+ *
+ * Driver-specific flags should be defined as:
+ * #define DRIVER_SPECIFIC_FLAG0 ((1U << V4L2_ISP_PARAMS_FL_DRIVER_FLAGS(0))
+ * #define DRIVER_SPECIFIC_FLAG1 ((1U << V4L2_ISP_PARAMS_FL_DRIVER_FLAGS(1))
+ */
+#define V4L2_ISP_PARAMS_FL_DRIVER_FLAGS(n) ((n) + 8)
+
+/**
+ * struct v4l2_isp_params_block_header - V4L2 extensible parameters block header
+ * @type: The parameters block type (driver-specific)
+ * @flags: A bitmask of block flags (driver-specific)
+ * @size: Size (in bytes) of the parameters block, including this header
+ *
+ * This structure represents the common part of all the ISP configuration
+ * blocks. Each parameters block shall embed an instance of this structure type
+ * as its first member, followed by the block-specific configuration data.
+ *
+ * The @type field is an ISP driver-specific value that identifies the block
+ * type. The @size field specifies the size of the parameters block.
+ *
+ * The @flags field is a bitmask of per-block flags V4L2_PARAMS_ISP_FL_* and
+ * driver-specific flags specified by the driver header.
+ */
+struct v4l2_isp_params_block_header {
+ __u16 type;
+ __u16 flags;
+ __u32 size;
+} __attribute__((aligned(8)));
+
+/**
+ * struct v4l2_isp_params_buffer - V4L2 extensible parameters configuration
+ * @version: The parameters buffer version (driver-specific)
+ * @data_size: The configuration data effective size, excluding this header
+ * @data: The configuration data
+ *
+ * This structure contains the configuration parameters of the ISP algorithms,
+ * serialized by userspace into a data buffer. Each configuration parameter
+ * block is represented by a block-specific structure which contains a
+ * :c:type:`v4l2_isp_params_block_header` entry as first member. Userspace
+ * populates the @data buffer with configuration parameters for the blocks that
+ * it intends to configure. As a consequence, the data buffer effective size
+ * changes according to the number of ISP blocks that userspace intends to
+ * configure and is set by userspace in the @data_size field.
+ *
+ * The parameters buffer is versioned by the @version field to allow modifying
+ * and extending its definition. Userspace shall populate the @version field to
+ * inform the driver about the version it intends to use. The driver will parse
+ * and handle the @data buffer according to the data layout specific to the
+ * indicated version and return an error if the desired version is not
+ * supported.
+ *
+ * For each ISP block that userspace wants to configure, a block-specific
+ * structure is appended to the @data buffer, one after the other without gaps
+ * in between. Userspace shall populate the @data_size field with the effective
+ * size, in bytes, of the @data buffer.
+ */
+struct v4l2_isp_params_buffer {
+ __u32 version;
+ __u32 data_size;
+ __u8 data[] __counted_by(data_size);
+};
+
+#endif /* _V4L2_ISP_H_ */
@@ -51,6 +51,7 @@ headers="
linux/dma-heap.h
linux/media-bus-format.h
linux/media.h
+ linux/media/v4l2-isp.h
linux/rkisp1-config.h
linux/stddef.h
linux/udmabuf.h