From 468fde0b79f3c36494eea6d3d7eb20cfb8f38a50 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 5 Oct 2017 13:52:19 -0400 Subject: media: v4l2-dev: document VFL_DIR_* direction defines The V4L_DIR_* direction flags document the direction for a V4L2 device node. Convert them to enum and document. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/v4l2-dev.h | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index ecd7933..ed5b513 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -41,11 +41,21 @@ enum vfl_devnode_type { }; #define VFL_TYPE_MAX VFL_TYPE_TOUCH -/* Is this a receiver, transmitter or mem-to-mem? */ -/* Ignored for VFL_TYPE_SUBDEV. */ -#define VFL_DIR_RX 0 -#define VFL_DIR_TX 1 -#define VFL_DIR_M2M 2 +/** + * enum vfl_direction - Identifies if a &struct video_device corresponds + * to a receiver, a transmitter or a mem-to-mem device. + * + * @VFL_DIR_RX: device is a receiver. + * @VFL_DIR_TX: device is a transmitter. + * @VFL_DIR_M2M: device is a memory to memory device. + * + * Note: Ignored if &enum vfl_devnode_type is %VFL_TYPE_SUBDEV. + */ +enum vfl_devnode_direction { + VFL_DIR_RX, + VFL_DIR_TX, + VFL_DIR_M2M, +}; struct v4l2_ioctl_callbacks; struct video_device; @@ -250,7 +260,7 @@ struct video_device /* device info */ char name[32]; enum vfl_devnode_type vfl_type; - int vfl_dir; + enum vfl_devnode_direction vfl_dir; int minor; u16 num; unsigned long flags; -- cgit v1.1