[media] v4l: V4L2_MBUS_FRAME_DESC_FL_BLOB is about 1D DMA (174d6a39) · Commits · 戴 / test

V4L2_MBUS_FRAME_DESC_FL_BLOB intends to say the receiver must use 1D DMA to receive the image, as the format does not have line offsets. This typically includes all compressed formats. Signed-off-by:

Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:

Mauro Carvalho Chehab <m.chehab@samsung.com>

include/media/v4l2-subdev.h

+6 −3

Original line number	Diff line number	Diff line
		@@ -234,15 +234,18 @@ struct v4l2_subdev_audio_ops {

		/* Indicates the @length field specifies maximum data length. */
		#define V4L2_MBUS_FRAME_DESC_FL_LEN_MAX (1U << 0)
		/* Indicates user defined data format, i.e. non standard frame format. */
		/*
		* Indicates that the format does not have line offsets, i.e. the
		* receiver should use 1D DMA.
		*/
		#define V4L2_MBUS_FRAME_DESC_FL_BLOB (1U << 1)

		/**
		* struct v4l2_mbus_frame_desc_entry - media bus frame description structure
		* @flags: V4L2_MBUS_FRAME_DESC_FL_* flags
		* @pixelcode: media bus pixel code, valid if FRAME_DESC_FL_BLOB is not set
		* @length: number of octets per frame, valid for compressed or unspecified
		* formats
		* @length: number of octets per frame, valid if V4L2_MBUS_FRAME_DESC_FL_BLOB
		* is set
		*/
		struct v4l2_mbus_frame_desc_entry {
		u16 flags;

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