diff --git a/include/sound/jack.h b/include/sound/jack.h
index c140fc7..63c7907 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h
@@ -42,6 +42,7 @@
 	SND_JACK_MECHANICAL	= 0x0008, /* If detected separately */
 	SND_JACK_VIDEOOUT	= 0x0010,
 	SND_JACK_AVOUT		= SND_JACK_LINEOUT | SND_JACK_VIDEOOUT,
+	SND_JACK_LINEIN		= 0x0020,
 
 	/* Kept separate from switches to facilitate implementation */
 	SND_JACK_BTN_0		= 0x4000,