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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/include/uapi/linux/v4l2-subdev.h
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@@ -65,19 +65,27 @@
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 	__u32 reserved[8];
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 };
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+#define V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE	0x00000001
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+#define V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC	0x00000002
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+#define V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC	0x00000004
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+#define V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC	V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC
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+#define V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION	0x00000008
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+
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 /**
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  * struct v4l2_subdev_mbus_code_enum - Media bus format enumeration
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  * @pad: pad number, as reported by the media API
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  * @index: format index during enumeration
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  * @code: format code (MEDIA_BUS_FMT_ definitions)
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  * @which: format type (from enum v4l2_subdev_format_whence)
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+ * @flags: flags set by the driver, (V4L2_SUBDEV_MBUS_CODE_*)
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  */
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 struct v4l2_subdev_mbus_code_enum {
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 	__u32 pad;
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 	__u32 index;
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 	__u32 code;
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 	__u32 which;
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-	__u32 reserved[8];
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+	__u32 flags;
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+	__u32 reserved[7];
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 };
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 /**
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@@ -155,9 +163,25 @@
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 	__u32 reserved[8];
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 };
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+/**
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+ * struct v4l2_subdev_capability - subdev capabilities
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+ * @version: the driver versioning number
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+ * @capabilities: the subdev capabilities, see V4L2_SUBDEV_CAP_*
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+ * @reserved: for future use, set to zero for now
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+ */
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+struct v4l2_subdev_capability {
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+	__u32 version;
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+	__u32 capabilities;
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+	__u32 reserved[14];
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+};
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+
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+/* The v4l2 sub-device video device node is registered in read-only mode. */
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+#define V4L2_SUBDEV_CAP_RO_SUBDEV		0x00000001
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+
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 /* Backwards compatibility define --- to be removed */
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 #define v4l2_subdev_edid v4l2_edid
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+#define VIDIOC_SUBDEV_QUERYCAP			_IOR('V',  0, struct v4l2_subdev_capability)
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 #define VIDIOC_SUBDEV_G_FMT			_IOWR('V',  4, struct v4l2_subdev_format)
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 #define VIDIOC_SUBDEV_S_FMT			_IOWR('V',  5, struct v4l2_subdev_format)
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 #define VIDIOC_SUBDEV_G_FRAME_INTERVAL		_IOWR('V', 21, struct v4l2_subdev_frame_interval)