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, 7 insertions, 0 deletions

diff --git a/live.c b/live.c
index 47e04d2..d4d14dc 100644
--- a/live.c
+++ b/live.c
@@ -103,6 +103,12 @@ static void __iq_aewb_process(struct omap3_isp_device *isp __attribute__((__unus
 	iq_aewb_process(iq, stats);
 }
 
+static void __iq_histogram_process(struct omap3_isp_device *isp __attribute__((__unused__)),
+				   const struct omap3_isp_histogram_stats *stats)
+{
+	iq_histogram_process(iq, stats);
+}
+
 /* -----------------------------------------------------------------------------
  * Events
  */
@@ -286,6 +292,7 @@ static struct omap3_isp_operations isp_ops = {
 	.watch_fd = __events_watch_fd,
 	.unwatch_fd = __events_unwatch_fd,
 	.aewb_ready = __iq_aewb_process,
+	.histogram_ready = __iq_histogram_process,
 };
 
 static int viewfinder_init(struct omap3_isp_device *isp,