[PATCH v9 02/13] media: uapi: Add extensible param and stats blocks for RPPX1

[Niklas Söderlund]

From: Jai Luthra <jai.luthra@xxxxxxxxxxxxxxxx>

Add the scaffolding for the parameters and statistics buffers for
Dreamchip RPPX1. The parameters for each ISP function block will be
added together with the logic for it.

In addition to the scaffolding add a common struct that describes the
measurement window. This struct is not specific to any block and will
used by many of them.

Signed-off-by: Jai Luthra <jai.luthra@xxxxxxxxxxxxxxxx>
[Niklas: Commit message]
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
 .../uapi/linux/media/dreamchip/rppx1-config.h | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 include/uapi/linux/media/dreamchip/rppx1-config.h

diff --git a/include/uapi/linux/media/dreamchip/rppx1-config.h b/include/uapi/linux/media/dreamchip/rppx1-config.h
new file mode 100644
index 000000000000..26627be6f483
--- /dev/null
+++ b/include/uapi/linux/media/dreamchip/rppx1-config.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Dreamchip RPP-X1 ISP Driver - Userspace API
+ *
+ * Copyright (C) 2026 Renesas Electronics Corp.
+ * Copyright (C) 2026 Ideas on Board Oy
+ * Copyright (C) 2026 Ragnatech AB
+ */
+
+#ifndef __UAPI_RPP_X1_CONFIG_H
+#define __UAPI_RPP_X1_CONFIG_H
+
+#include <linux/types.h>
+#include <linux/media/v4l2-isp.h>
+
+/**
+ * struct rppx1_window - Measurement window
+ *
+ * RPP-X1 measurement window. Different blocks use a window or multiple
+ * windows for measurement purposes. This defines a common type for all of
+ * them. The number of relevant bits depends on the block where the window is
+ * used and is specified in the per-block description
+ *
+ * @h_offs: horizontal offset from the left of the frame in pixels
+ * @v_offs: vertical offset from the top of the frame in pixels
+ * @h_size: horizontal size of the window in pixels
+ * @v_size: vertical size of the window in pixels
+ */
+struct rppx1_window {
+	__u16 h_offs;
+	__u16 v_offs;
+	__u16 h_size;
+	__u16 v_size;
+};
+
+/* ---------------------------------------------------------------------------
+ * Parameter Structures
+ *
+ * Native RPP-X1 precision. Fields use __u32 where the hardware provides
+ * wider-than-8-bit results.
+ */
+
+/**
+ * RPPX1_PARAMS_MAX_SIZE - Maximum size of all RPP-X1 parameter blocks
+ *
+ * Some types are reported twice as the same block might be instantiated in
+ * multiple pipes.
+ */
+#define RPPX1_PARAMS_MAX_SIZE 0
+
+/* ---------------------------------------------------------------------------
+ * Statistics Structures
+ *
+ * Native RPP-X1 precision. Fields use __u32 where the hardware provides
+ * wider-than-8-bit results.
+ */
+
+/**
+ * RPPX1_STATS_MAX_SIZE - Maximum size of all RPP-X1 statistics
+ *
+ * Some types are reported twice as the same block might be instantiated in
+ * multiple pipes.
+ */
+#define RPPX1_STATS_MAX_SIZE 0
+
+#endif /* __UAPI_RPP_X1_CONFIG_H */
-- 
2.54.0