fbdev: sh_mobile_lcdc: Return display connection state in display_on

Return true if the display is connected and false otherwise. Set the fb
info state to FBINFO_STATE_SUSPENDED in the sh_mobile_lcdc driver when
the display is not connected.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/video/sh_mobile_lcdcfb.h b/drivers/video/sh_mobile_lcdcfb.h
index b2cb8e6d098c..6fb956c8e603 100644
--- a/drivers/video/sh_mobile_lcdcfb.h
+++ b/drivers/video/sh_mobile_lcdcfb.h
@@ -21,6 +21,9 @@ struct sh_mobile_lcdc_entity;
 struct sh_mobile_lcdc_priv;
 struct sh_mobile_lcdc_chan;
 
+#define SH_MOBILE_LCDC_DISPLAY_DISCONNECTED     0
+#define SH_MOBILE_LCDC_DISPLAY_CONNECTED        1
+
 struct sh_mobile_lcdc_entity_ops {
         /* Display */
         int (*display_on)(struct sh_mobile_lcdc_entity *entity);