[PATCH 2/2] media: i2c: vd55g1: Support control events

[Fernando Rimoli <fernandorimoli11@gmail.com>]

The sensor subdev exposes controls but does not implement the control
event operations, so VIDIOC_SUBSCRIBE_EVENT fails and v4l2-compliance
reports:

  fail: v4l2-test-controls.cpp(1108): subscribe event for control 'User Controls' failed
  test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL

Add the standard control event subdev operations and set
V4L2_SUBDEV_FL_HAS_EVENTS.

Signed-off-by: Fernando Rimoli <fernandorimoli11@gmail.com>
---
 drivers/media/i2c/vd55g1.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/vd55g1.c b/drivers/media/i2c/vd55g1.c
index 69ffb3a..162c2d5 100644
--- a/drivers/media/i2c/vd55g1.c
+++ b/drivers/media/i2c/vd55g1.c
@@ -1447,7 +1447,13 @@ static const struct v4l2_subdev_video_ops vd55g1_video_ops = {
 	.s_stream = v4l2_subdev_s_stream_helper,
 };
 
+static const struct v4l2_subdev_core_ops vd55g1_core_ops = {
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
 static const struct v4l2_subdev_ops vd55g1_subdev_ops = {
+	.core = &vd55g1_core_ops,
 	.video = &vd55g1_video_ops,
 	.pad = &vd55g1_pad_ops,
 };
@@ -1918,7 +1924,8 @@ static int vd55g1_subdev_init(struct vd55g1 *sensor)
 	int ret;
 
 	/* Init sub device */
-	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+			    V4L2_SUBDEV_FL_HAS_EVENTS;
 	sensor->sd.internal_ops = &vd55g1_internal_ops;
 
 	/* Init source pad */
-- 
2.43.0