V4L/DVB (12543): v4l: introduce string control support.
The upcoming RDS encoder needs support for string controls. This patch
implements the core implementation.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 293ba18..9ab4cbe 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -167,6 +167,7 @@
V4L2_CTRL_TYPE_BUTTON = 4,
V4L2_CTRL_TYPE_INTEGER64 = 5,
V4L2_CTRL_TYPE_CTRL_CLASS = 6,
+ V4L2_CTRL_TYPE_STRING = 7,
};
enum v4l2_tuner_type {
@@ -795,11 +796,12 @@
struct v4l2_ext_control {
__u32 id;
- __u32 reserved2[2];
+ __u32 size;
+ __u32 reserved2[1];
union {
__s32 value;
__s64 value64;
- void *reserved;
+ char *string;
};
} __attribute__ ((packed));