From fb149f9e2835446e02e796081635520b881dc351 Mon Sep 17 00:00:00 2001
From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Date: Sat, 7 May 2011 11:16:00 +0800
Subject: at91: add arch specific ioremap support

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
---
 arch/arm/mach-at91/setup.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'arch/arm/mach-at91/setup.c')

diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 816599fce55b..aa64294c7db3 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -7,6 +7,7 @@
 
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/mm.h>
 
 #include <asm/mach/map.h>
 
@@ -72,6 +73,24 @@ static struct map_desc at91_io_desc __initdata = {
 	.type		= MT_DEVICE,
 };
 
+void __iomem *at91_ioremap(unsigned long p, size_t size, unsigned int type)
+{
+	if (p >= AT91_BASE_SYS && p <= (AT91_BASE_SYS + SZ_16K - 1))
+		return (void __iomem *)AT91_IO_P2V(p);
+
+	return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
+}
+EXPORT_SYMBOL(at91_ioremap);
+
+void at91_iounmap(volatile void __iomem *addr)
+{
+	unsigned long virt = (unsigned long)addr;
+
+	if (virt >= VMALLOC_START && virt < VMALLOC_END)
+		__iounmap(addr);
+}
+EXPORT_SYMBOL(at91_iounmap);
+
 #define AT91_DBGU0	0xfffff200
 #define AT91_DBGU1	0xffffee00
 
-- 
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