From 174d6a39b07f51212c23a8e30a0440598d18392c Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 18 Dec 2013 08:40:28 -0300 Subject: [media] v4l: V4L2_MBUS_FRAME_DESC_FL_BLOB is about 1D DMA 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 Cc: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- include/media/v4l2-subdev.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index ee0ae769ca94..7653194e821a 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -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; -- cgit v1.2.3