[ARM] Add a common typesafe __io implementation

As Al did for Versatile in 2ad4f86b60b649fd7428265c08d73a3bd360c81b,
add a typesafe __io implementation for platforms to use.  Convert
platforms to use this new simple typesafe implementation.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/io.h

@@ -79,6 +79,14 @@ extern void __iounmap(volatile void __iomem *addr);
  */
 extern void __readwrite_bug(const char *fn);
 
+/*
+ * A typesafe __io() helper
+ */
+static inline void __iomem *__typesafe_io(unsigned long addr)
+{
+	return (void __iomem *)addr;
+}
+
 /*
  * Now, pick up the machine-defined IO definitions
  */

arch/arm/mach-aaec2000/include/mach/io.h

@@ -12,7 +12,7 @@
  * We don't actually have real ISA nor PCI buses, but there is so many
  * drivers out there that might just work if we fake them...
  */
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-at91/include/mach/io.h

@@ -23,8 +23,8 @@
 
 #define IO_SPACE_LIMIT		0xFFFFFFFF
 
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 
 #ifndef __ASSEMBLY__

arch/arm/mach-clps711x/include/mach/io.h

@@ -22,8 +22,8 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 /*
  * We don't support ins[lb]/outs[lb].  Make them fault.

arch/arm/mach-davinci/include/mach/io.h

@@ -29,8 +29,7 @@
  * We don't actually have real ISA nor PCI buses, but there is so many
  * drivers out there that might just work if we fake them...
  */
-#define PCIO_BASE               0
-#define __io(a)			((void __iomem *)(PCIO_BASE + (a)))
+#define __io(a)			__typesafe_io(a)
 #define __mem_pci(a)		(a)
 #define __mem_isa(a)		(a)
 

arch/arm/mach-ep93xx/include/mach/io.h

@@ -4,5 +4,5 @@
 
 #define IO_SPACE_LIMIT		0xffffffff
 
-#define __io(p)			((void __iomem *)(p))
-#define __mem_pci(p)		(p)
+#define __io(p)		__typesafe_io(p)
+#define __mem_pci(p)	(p)

arch/arm/mach-h720x/include/mach/io.h

@@ -16,7 +16,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)		((void __iomem *)(a))
+#define __io(a)		__typesafe_io(a)
 #define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-imx/include/mach/io.h

@@ -22,7 +22,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)		((void __iomem *)(a))
+#define __io(a)		__typesafe_io(a)
 #define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-ixp4xx/include/mach/io.h

@@ -239,7 +239,7 @@ __ixp4xx_readsl(const volatile void __iomem *bus_addr, u32 *vaddr, u32 count)
 
 #ifndef CONFIG_PCI
 
-#define	__io(v)		v
+#define	__io(v)		__typesafe_io(v)
 
 #else
 

arch/arm/mach-ks8695/include/mach/io.h

@@ -13,7 +13,7 @@
 
 #define IO_SPACE_LIMIT		0xffffffff
 
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-l7200/include/mach/io.h

@@ -15,11 +15,7 @@
 /*
  * There are not real ISA nor PCI buses, so we fake it.
  */
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-#define __io(a)	__io(a)
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-lh7a40x/include/mach/io.h

@@ -14,7 +14,7 @@
 #define IO_SPACE_LIMIT 0xffffffff
 
 /* No ISA or PCI bus on this machine. */
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif /* __ASM_ARCH_IO_H */

arch/arm/mach-msm/include/mach/io.h

@@ -23,11 +23,7 @@
 
 void __iomem *__msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype);
 
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-#define __io(a)         __io(a)
+#define __io(a)		__typesafe_io(a)
 #define __mem_pci(a)    (a)
 
 #endif

arch/arm/mach-netx/include/mach/io.h

@@ -22,7 +22,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)         ((void __iomem *)(a))
+#define __io(a)		__typesafe_io(a)
 #define __mem_pci(a)            (a)
 
 #endif

arch/arm/mach-ns9xxx/include/mach/io.h

@@ -13,7 +13,7 @@
 
 #define IO_SPACE_LIMIT  0xffffffff /* XXX */
 
-#define __io(a)         ((void __iomem *)(a))
+#define __io(a)		__typesafe_io(a)
 #define __mem_pci(a)    (a)
 #define __mem_isa(a)    (IO_BASE + (a))
 

arch/arm/mach-orion5x/include/mach/io.h

@@ -38,14 +38,9 @@ __arch_iounmap(void __iomem *addr)
 		__iounmap(addr);
 }
 
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-
 #define __arch_ioremap(p, s, m)	__arch_ioremap(p, s, m)
 #define __arch_iounmap(a)	__arch_iounmap(a)
-#define __io(a)			__io(a)
+#define __io(a)			__typesafe_io(a)
 #define __mem_pci(a)		(a)
 
 

arch/arm/mach-pnx4008/include/mach/io.h

@@ -15,7 +15,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-pxa/include/mach/io.h

@@ -12,7 +12,7 @@
  * We don't actually have real ISA nor PCI buses, but there is so many
  * drivers out there that might just work if we fake them...
  */
-#define __io(a)			((void __iomem *)(a))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-realview/include/mach/io.h

@@ -22,12 +22,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-
-#define __io(a)			__io(a)
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-sa1100/include/mach/io.h

@@ -16,11 +16,7 @@
  * We don't actually have real ISA nor PCI buses, but there is so many 
  * drivers out there that might just work if we fake them...
  */
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-#define __io(a)			__io(a)
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/mach-versatile/include/mach/io.h

@@ -22,11 +22,7 @@
 
 #define IO_SPACE_LIMIT 0xffffffff
 
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-#define __io(a)	__io(a)
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/plat-mxc/include/mach/io.h

@@ -35,8 +35,8 @@ __mx3_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 #endif
 
 /* io address mapping macro */
-#define __io(a)			((void __iomem *)(a))
+#define __io(a)		__typesafe_io(a)
 
-#define __mem_pci(a)		(a)
+#define __mem_pci(a)	(a)
 
 #endif

arch/arm/plat-omap/include/mach/io.h

@@ -42,8 +42,8 @@
  * We don't actually have real ISA nor PCI buses, but there is so many
  * drivers out there that might just work if we fake them...
  */
-#define __io(a)			((void __iomem *)(PCIO_BASE + (a)))
-#define __mem_pci(a)		(a)
+#define __io(a)		__typesafe_io(a)
+#define __mem_pci(a)	(a)
 
 /*
  * ----------------------------------------------------------------------------
@@ -51,8 +51,6 @@
  * ----------------------------------------------------------------------------
  */
 
-#define PCIO_BASE	0
-
 #if defined(CONFIG_ARCH_OMAP1)
 
 #define IO_PHYS			0xFFFB0000