[PATCH V2] Davinci VPFE Capture: Add support for Control ioctls

[hvaibhav@xxxxxx]

From: Vaibhav Hiremath <hvaibhav@xxxxxx>

Added support for Control IOCTL,
	- s_ctrl
	- g_ctrl
	- queryctrl

Change from last patch:
	- added room for error return in queryctrl function.
	
Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
---
 drivers/media/video/davinci/vpfe_capture.c |   43 ++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/drivers/media/video/davinci/vpfe_capture.c b/drivers/media/video/davinci/vpfe_capture.c
index abe21e4..8275d02 100644
--- a/drivers/media/video/davinci/vpfe_capture.c
+++ b/drivers/media/video/davinci/vpfe_capture.c
@@ -1368,6 +1368,46 @@ static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
 	return 0;
 }

+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;
+	int ret = 0;
+
+	sdinfo = vpfe_dev->current_subdev;
+
+	ret = v4l2_device_call_until_err(&vpfe_dev->v4l2_dev, sdinfo->grp_id,
+					 core, queryctrl, qctrl);
+
+	if (ret)
+		qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+
+	return ret;
+}
+
+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);
+}
+
 /*
  *  Videobuf operations
  */
@@ -1939,6 +1979,9 @@ 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,
--
1.6.2.4

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html