OMAPDSS: add dispc_ovl_enabled()

Add new dispc function, dispc_ovl_enabled(). This returns if the overlay
enable bit is set in the registers.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index b5cdbaf61f0..3fd60ce3d71 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -2589,6 +2589,11 @@ int dispc_ovl_enable(enum omap_plane plane, bool enable)
         return 0;
 }
 
+bool dispc_ovl_enabled(enum omap_plane plane)
+{
+        return REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0);
+}
+
 static void dispc_mgr_disable_isr(void *data, u32 mask)
 {
         struct completion *compl = data;
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index 85c6fc8cec1..e3e5a63dace 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -427,6 +427,7 @@ int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi,
                 bool replication, const struct omap_video_timings *mgr_timings,
                 bool mem_to_mem);
 int dispc_ovl_enable(enum omap_plane plane, bool enable);
+bool dispc_ovl_enabled(enum omap_plane plane);
 void dispc_ovl_set_channel_out(enum omap_plane plane,
                 enum omap_channel channel);