From d0c7529cb9833ede3595051df5599a11fe03be48 Mon Sep 17 00:00:00 2001
From: Reinhard Tartler <siretart@tauware.de>
Date: Thu, 5 Apr 2007 15:25:19 +0200
Subject: import new upstream

---
 udelay.h | 63 +++++++++------------------------------------------------------
 1 file changed, 9 insertions(+), 54 deletions(-)

(limited to 'udelay.h')

diff --git a/udelay.h b/udelay.h
index 2def361..60623ab 100644
--- a/udelay.h
+++ b/udelay.h
@@ -1,4 +1,5 @@
-/* $Id: udelay.h,v 1.11 2005/12/12 09:08:08 reinelt Exp $
+/* $Id: udelay.h 728 2007-01-14 11:14:38Z michael $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/branches/0.10.1/udelay.h $
  *
  * short delays 
  *
@@ -21,55 +22,6 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
- *
- * $Log: udelay.h,v $
- * Revision 1.11  2005/12/12 09:08:08  reinelt
- * finally removed old udelay code path; read timing values from config
- *
- * Revision 1.10  2005/05/08 04:32:45  reinelt
- * CodingStyle added and applied
- *
- * Revision 1.9  2005/01/18 06:30:24  reinelt
- * added (C) to all copyright statements
- *
- * Revision 1.8  2004/06/26 12:05:00  reinelt
- *
- * uh-oh... the last CVS log message messed up things a lot...
- *
- * Revision 1.7  2004/06/26 09:27:21  reinelt
- *
- * added '-W' to CFLAGS
- * changed all C++ comments to C ones
- * cleaned up a lot of signed/unsigned mistakes
- *
- * Revision 1.6  2004/06/20 10:09:56  reinelt
- *
- * 'const'ified the whole source
- *
- * Revision 1.5  2003/10/05 17:58:50  reinelt
- * libtool junk; copyright messages cleaned up
- *
- * Revision 1.4  2002/04/29 11:00:28  reinelt
- *
- * added Toshiba T6963 driver
- * added ndelay() with nanosecond resolution
- *
- * Revision 1.3  2001/03/12 13:44:58  reinelt
- *
- * new udelay() using Time Stamp Counters
- *
- * Revision 1.2  2001/03/12 12:39:36  reinelt
- *
- * reworked autoconf a lot: drivers may be excluded, #define's went to config.h
- *
- * Revision 1.1  2000/04/15 16:56:52  reinelt
- *
- * moved delay loops to udelay.c
- * renamed -d (debugging) switch to -v (verbose)
- * new switch -d to calibrate delay loop
- * 'Delay' entry for HD44780 back again
- * delay loops will not calibrate automatically, because this will fail with high CPU load
- *
  */
 
 #ifndef _UDELAY_H_
@@ -79,11 +31,14 @@
 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
 static inline void rep_nop(void)
 {
-#if defined (__i386__) || defined  (__amd64__)
+# if defined(__i386) || defined(__i386__) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
+    /* intel or amd64 arch, the "rep" and "nop" opcodes are available */
     __asm__ __volatile__("rep; nop");
-#else
-#warning "please insert appropriate nop asm statement here"
-#endif
+# else
+    /* other Arch, maybe add core cooldown code here, too. */
+    do {
+    } while (0);
+# endif
 }
 
 void udelay_init(void);
-- 
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