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

[hvaibhav]

From: Vaibhav Hiremath <hvaib...@ti.com>

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 <hvaib...@ti.com>
---
 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 majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html