V4L/DVB (13469): Davinci VPFE Capture: Add support for Control ioctls

Added support for Control IOCTL,
        - s_ctrl
        - g_ctrl
        - queryctrl
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/davinci/vpfe_capture.c

@@ -1413,6 +1413,41 @@ static int vpfe_dqbuf(struct file *file, void *priv,
 				      buf, file->f_flags & O_NONBLOCK);
 }
 
+static int vpfe_queryctrl(struct file *file, void *priv,
+		struct v4l2_queryctrl *qctrl)
+{
+	struct vpfe_device *vpfe_dev = video_drvdata(file);
+	struct vpfe_subdev_info *sdinfo;
+
+	sdinfo = vpfe_dev->current_subdev;
+
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+					 core, queryctrl, qctrl);
+
+}
+
+static int vpfe_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl)
+{
+	struct vpfe_device *vpfe_dev = video_drvdata(file);
+	struct vpfe_subdev_info *sdinfo;
+
+	sdinfo = vpfe_dev->current_subdev;
+
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+					 core, g_ctrl, ctrl);
+}
+
+static int vpfe_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl)
+{
+	struct vpfe_device *vpfe_dev = video_drvdata(file);
+	struct vpfe_subdev_info *sdinfo;
+
+	sdinfo = vpfe_dev->current_subdev;
+
+	return v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+					 core, s_ctrl, ctrl);
+}
+
 /*
  * vpfe_calculate_offsets : This function calculates buffers offset
  * for top and bottom field
@@ -1710,6 +1745,9 @@ static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
 	.vidioc_querystd	 = vpfe_querystd,
 	.vidioc_s_std		 = vpfe_s_std,
 	.vidioc_g_std		 = vpfe_g_std,
+	.vidioc_queryctrl	 = vpfe_queryctrl,
+	.vidioc_g_ctrl		 = vpfe_g_ctrl,
+	.vidioc_s_ctrl		 = vpfe_s_ctrl,
 	.vidioc_reqbufs		 = vpfe_reqbufs,
 	.vidioc_querybuf	 = vpfe_querybuf,
 	.vidioc_qbuf		 = vpfe_qbuf,