cam: Add an option to list camera controls

Add a new --list-controls option to print information about all the
controls supported by a camera.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/cam/main.h b/src/cam/main.h
index d23c6dfb..4a130d8d 100644
--- a/src/cam/main.h
+++ b/src/cam/main.h
@@ -16,6 +16,7 @@ enum {
 	OptList = 'l',
 	OptListProperties = 'p',
 	OptStream = 's',
+	OptListControls = 256,
 };
 
 #endif /* __CAM_MAIN_H__ */