ARM: at91: make shutdown controler soc independent

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/include/mach/at91_shdwc.h b/arch/arm/mach-at91/include/mach/at91_shdwc.h
index c4ce07e..1d4fe82 100644
--- a/arch/arm/mach-at91/include/mach/at91_shdwc.h
+++ b/arch/arm/mach-at91/include/mach/at91_shdwc.h
@@ -16,11 +16,21 @@
 #ifndef AT91_SHDWC_H
 #define AT91_SHDWC_H
 
-#define AT91_SHDW_CR		(AT91_SHDWC + 0x00)	/* Shut Down Control Register */
+#ifndef __ASSEMBLY__
+extern void __iomem *at91_shdwc_base;
+
+#define at91_shdwc_read(field) \
+	__raw_readl(at91_shdwc_base + field)
+
+#define at91_shdwc_write(field, value) \
+	__raw_writel(value, at91_shdwc_base + field);
+#endif
+
+#define AT91_SHDW_CR		0x00			/* Shut Down Control Register */
 #define		AT91_SHDW_SHDW		(1    << 0)		/* Shut Down command */
 #define		AT91_SHDW_KEY		(0xa5 << 24)		/* KEY Password */
 
-#define AT91_SHDW_MR		(AT91_SHDWC + 0x04)	/* Shut Down Mode Register */
+#define AT91_SHDW_MR		0x04			/* Shut Down Mode Register */
 #define		AT91_SHDW_WKMODE0	(3 << 0)		/* Wake-up 0 Mode Selection */
 #define			AT91_SHDW_WKMODE0_NONE		0
 #define			AT91_SHDW_WKMODE0_HIGH		1
@@ -30,7 +40,7 @@
 #define			AT91_SHDW_CPTWK0_(x)	((x) << 4)
 #define		AT91_SHDW_RTTWKEN	(1   << 16)		/* Real Time Timer Wake-up Enable */
 
-#define AT91_SHDW_SR		(AT91_SHDWC + 0x08)	/* Shut Down Status Register */
+#define AT91_SHDW_SR		0x08			/* Shut Down Status Register */
 #define		AT91_SHDW_WAKEUP0	(1 <<  0)		/* Wake-up 0 Status */
 #define		AT91_SHDW_RTTWK		(1 << 16)		/* Real-time Timer Wake-up */
 #define		AT91_SHDW_RTCWK		(1 << 17)		/* Real-time Clock Wake-up [SAM9RL] */