isp: Add histogram supporthistogram

Support enabling the histogram statistics engine and retrieving
histogram data. Histogram data is currently ignored in the image quality
tuning implementation.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/isp/omap3isp.h b/isp/omap3isp.h
index 491dcdb..f31de3e 100644
--- a/isp/omap3isp.h
+++ b/isp/omap3isp.h
@@ -54,6 +54,8 @@ struct omap3_isp_operations {
 			     struct v4l2_video_buffer *buffer);
 	void (*aewb_ready)(struct omap3_isp_device *isp,
 			   const struct omap3_isp_aewb_stats *stats);
+	void (*histogram_ready)(struct omap3_isp_device *isp,
+				const struct omap3_isp_histogram_stats *hist);
 	void (*watch_fd)(int fd, enum omap3_isp_event_type type,
 			 void(*callback)(void *priv), void *priv);
 	void (*unwatch_fd)(int fd);