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authorThomas Gleixner <tglx@tglx.tec.linutronix.de>2005-07-07 16:50:16 +0200
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-07-07 16:50:16 +0200
commit97f927a4d7dbccde0a854a62c3ea54d90bae8679 (patch)
treed571cdae6507be90d4ee67d4937b765e2b332d77 /include/asm-arm/arch-pxa/mtd-xip.h
parentb9c86d595d2a11009c58c84a9a8792aeb4a8f278 (diff)
[MTD] XIP cleanup
Move the architecture dependend code into include/asm/mtd-xip.h Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-arm/arch-pxa/mtd-xip.h')
-rw-r--r--include/asm-arm/arch-pxa/mtd-xip.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-arm/arch-pxa/mtd-xip.h b/include/asm-arm/arch-pxa/mtd-xip.h
new file mode 100644
index 00000000000..8704dbceb43
--- /dev/null
+++ b/include/asm-arm/arch-pxa/mtd-xip.h
@@ -0,0 +1,37 @@
+/*
+ * MTD primitives for XIP support. Architecture specific functions
+ *
+ * Do not include this file directly. It's included from linux/mtd/xip.h
+ *
+ * Author: Nicolas Pitre
+ * Created: Nov 2, 2004
+ * Copyright: (C) 2004 MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * $Id: xip.h,v 1.2 2004/12/01 15:49:10 nico Exp $
+ */
+
+#ifndef __ARCH_PXA_MTD_XIP_H__
+#define __ARCH_PXA_MTD_XIP_H__
+
+#include <asm/arch/pxa-regs.h>
+
+#define xip_irqpending() (ICIP & ICMR)
+
+/* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
+#define xip_currtime() (OSCR)
+#define xip_elapsed_since(x) (signed)((OSCR - (x)) / 4)
+
+/*
+ * xip_cpu_idle() is used when waiting for a delay equal or larger than
+ * the system timer tick period. This should put the CPU into idle mode
+ * to save power and to be woken up only when some interrupts are pending.
+ * As above, this should not rely upon standard kernel code.
+ */
+
+#define xip_cpu_idle() asm volatile ("mcr p14, 0, %0, c7, c0, 0" :: "r" (1))
+
+#endif /* __ARCH_PXA_MTD_XIP_H__ */