[PATCH] fbcon: Console Rotation - Add support for 90-degree console rotation

Add support for 90-degree (clockwise) rotation of the console.  To activate,
boot with:

fbcon=rotate:1

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, 13 insertions, 0 deletions

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index 26935e231a1d..e829ba18e0a5 100644
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -207,12 +207,25 @@ static irqreturn_t fb_vbl_detect(int irq, void *dummy, struct pt_regs *fp)
 }
 #endif
 
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
+static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
+{
+        struct fbcon_ops *ops = info->fbcon_par;
+
+        if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
+            p->con_rotate < 4)
+                ops->rotate = p->con_rotate;
+        else
+                ops->rotate = 0;
+}
+#else
 static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
 {
         struct fbcon_ops *ops = info->fbcon_par;
 
         ops->rotate = FB_ROTATE_UR;
 }
+#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
 
 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
 {