Add support for event handling to do_ioctl.
Signed-off-by: Sakari Ailus <sakari.ai...@maxwell.research.nokia.com>
---
drivers/media/video/v4l2-ioctl.c | 48 ++++++++++++++++++++++++++++++++++++++
include/media/v4l2-ioctl.h | 9 +++++++
2 files changed, 57 insertions(+), 0 deletions(-)
diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c
index bfc4696..6964bcc 100644
--- a/drivers/media/video/v4l2-ioctl.c
+++ b/drivers/media/video/v4l2-ioctl.c
@@ -1797,7 +1797,55 @@ static long __video_do_ioctl(struct file *file,
}
break;
}
+ case VIDIOC_DQEVENT:
+ {
+ struct v4l2_event *ev = arg;
+
+ if (!ops->vidioc_dqevent)
+ break;
+
+ ret = ops->vidioc_dqevent(file->private_data, ev);
+ if (ret < 0) {
+ dbgarg(cmd, "no pending events?");
+ break;
+ }
+ dbgarg(cmd,
+ "count=%d, type=0x%8.8x, sequence=%d, "
+ "timestamp=%lu.%9.9lu ",
+ ev->count, ev->type, ev->sequence,
+ ev->timestamp.tv_sec, ev->timestamp.tv_nsec);
+ break;
+ }
+ case VIDIOC_SUBSCRIBE_EVENT:
+ {
+ struct v4l2_event_subscription *sub = arg;
+ if (!ops->vidioc_subscribe_event)
+ break;
+
+ ret = ops->vidioc_subscribe_event(file->private_data, sub);
+ if (ret < 0) {
+ dbgarg(cmd, "failed, ret=%ld", ret);
+ break;
+ }
+ dbgarg(cmd, "type=0x%8.8x", sub->type);
+ break;
+ }
+ case VIDIOC_UNSUBSCRIBE_EVENT:
+ {
+ struct v4l2_event_subscription *sub = arg;
+
+ if (!ops->vidioc_unsubscribe_event)
+ break;
+
+ ret = ops->vidioc_unsubscribe_event(file->private_data, sub);
+ if (ret < 0) {
+ dbgarg(cmd, "failed, ret=%ld", ret);
+ break;
+ }
+ dbgarg(cmd, "type=0x%8.8x", sub->type);
+ break;
+ }
default:
{
if (!ops->vidioc_default)
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 7a4529d..29dd64b 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -21,6 +21,8 @@
#include <linux/videodev2.h>
#endif
+struct v4l2_fh;
+
struct v4l2_ioctl_ops {
/* ioctl callbacks */
@@ -239,6 +241,13 @@ struct v4l2_ioctl_ops {
int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
struct v4l2_frmivalenum *fival);
+ int (*vidioc_dqevent) (struct v4l2_fh *fh,
+ struct v4l2_event *ev);
+ int (*vidioc_subscribe_event) (struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub);
+ int (*vidioc_unsubscribe_event) (struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub);
+
/* For other private ioctls */
long (*vidioc_default) (struct file *file, void *fh,
int cmd, void *arg);
--
1.5.6.5
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