[PATCH] fbcon: Console Rotation - Add support to rotate font bitmap

Add support to rotate the font bitmap.  To save on processing time, the entire
fontdata will be rotated on a console switch, then stored in a buffer private
to fbcon.  To further save on processing, the fontdata will only be rotated if
the font has changed or if the angle of rotation has changed.  Only a single
copy of the rotated fontdata will be kept.

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, 0 deletions

diff --git a/drivers/video/console/fbcon.h b/drivers/video/console/fbcon.h
index 846a5a4e736c..accfd7bd8e93 100644
--- a/drivers/video/console/fbcon.h
+++ b/drivers/video/console/fbcon.h
@@ -215,7 +215,11 @@ static inline int get_attribute(struct fb_info *info, u16 c)
         (void) (&_r == &_v); \
         (i == FB_ROTATE_UR || i == FB_ROTATE_UD) ? _r : _v; })
 
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
+extern void fbcon_set_rotate(struct fbcon_ops *ops);
+#else
 #define fbcon_set_rotate(x) do {} while(0)
+#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
 
 #endif /* _VIDEO_FBCON_H */