sh_mobile_lcdc: Add display notify callback to sh_mobile_lcdc_chan

The callback implements 3 notification events:

- SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT notifies the LCDC that the
  display has been connected
- SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT notifies the LCDC that the
  display has been disconnected
- SH_MOBILE_LCDC_EVENT_DISPLAY_MODE notifies that LCDC that a display
  mode has been detected

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

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/video/sh_mobile_lcdcfb.h b/drivers/video/sh_mobile_lcdcfb.h
index 6fb956c8e603..e2eb7af438f7 100644
--- a/drivers/video/sh_mobile_lcdcfb.h
+++ b/drivers/video/sh_mobile_lcdcfb.h
@@ -30,6 +30,12 @@ struct sh_mobile_lcdc_entity_ops {
         void (*display_off)(struct sh_mobile_lcdc_entity *entity);
 };
 
+enum sh_mobile_lcdc_entity_event {
+        SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT,
+        SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT,
+        SH_MOBILE_LCDC_EVENT_DISPLAY_MODE,
+};
+
 struct sh_mobile_lcdc_entity {
         struct module *owner;
         const struct sh_mobile_lcdc_entity_ops *ops;
@@ -70,6 +76,10 @@ struct sh_mobile_lcdc_chan {
         unsigned long base_addr_y;
         unsigned long base_addr_c;
         unsigned int pitch;
+
+        int (*notify)(struct sh_mobile_lcdc_chan *ch,
+                      enum sh_mobile_lcdc_entity_event event,
+                      struct fb_var_screeninfo *var);
 };
 
 #endif