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[RFCv3,API,27/31] v4l2-dev: add new VFL_DIR_ defines.

Message ID 5a262a9825e89a2c7b3e094de9432d65634fd1ba.1347619766.git.hans.verkuil@cisco.com (mailing list archive)
State New, archived
Headers show

Commit Message

Hans Verkuil Sept. 14, 2012, 10:57 a.m. UTC 
These will be used by v4l2-dev.c to improve ioctl checking.
I.e. ioctls for capture should return -ENOTTY when called for
an output device.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
 include/media/v4l2-dev.h |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 6ee8897..95d1c91 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -26,6 +26,12 @@ 
 #define VFL_TYPE_SUBDEV		3
 #define VFL_TYPE_MAX		4
 
+/* 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
+
 struct v4l2_ioctl_callbacks;
 struct video_device;
 struct v4l2_device;
@@ -105,7 +111,8 @@  struct video_device
 
 	/* device info */
 	char name[32];
-	int vfl_type;
+	int vfl_type;	/* device type */
+	int vfl_dir;	/* receiver, transmitter or m2m */
 	/* 'minor' is set to -1 if the registration failed */
 	int minor;
 	u16 num;