[PATCH] fbcon: Add ability to save/restore graphics state

Add hooks to save and restore the graphics state.  These hooks are called in
fbcon_blank() when entering/leaving KD_GRAPHICS mode.  This is needed by
savagefb at least so it can cooperate with savage_dri and by cyblafb.

State save/restoration can be full or partial.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index c024ffd0266d..bd4500a8992e 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2191,11 +2191,14 @@ static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
                 ops->graphics = 1;
 
                 if (!blank) {
+                        if (info->fbops->fb_save_state)
+                                info->fbops->fb_save_state(info);
                         var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
                         fb_set_var(info, &var);
                         ops->graphics = 0;
                         ops->var = info->var;
-                }
+                } else if (info->fbops->fb_restore_state)
+                        info->fbops->fb_restore_state(info);
         }
 
         if (!fbcon_is_inactive(vc, info)) {