isp: Protect against starting viewfinder and snapshot at the same time

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

1 files changed, 8 insertions, 0 deletions

diff --git a/isp/omap3isp-priv.h b/isp/omap3isp-priv.h
index 4e24d31..18babcd 100644
--- a/isp/omap3isp-priv.h
+++ b/isp/omap3isp-priv.h
@@ -150,6 +150,12 @@ struct omap3_isp_pipeline {
 	struct omap3_isp_resizer resizer;
 };
 
+enum omap3_isp_state {
+	OMAP3_ISP_IDLE,
+	OMAP3_ISP_VIEWFINDER,
+	OMAP3_ISP_SNAPSHOT,
+};
+
 struct omap3_isp_device {
 	struct media_device *mdev;
 
@@ -174,6 +180,8 @@ struct omap3_isp_device {
 	struct omap3_isp_pipeline viewfinder;
 	struct omap3_isp_pipeline snapshot;
 
+	enum omap3_isp_state state;
+
 	const struct omap3_isp_operations *ops;
 };