davinci: add arch_ioremap() which uses existing static mappings
Add arch-specific ioremap() which uses any existing static mappings in
place of doing a new mapping. From now on, drivers should always use
ioremap() instead of IO_ADDRESS().
In addition, remove the davinci_[read|write]* macros in favor of using
ioremap.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/include/mach/io.h b/arch/arm/mach-davinci/include/mach/io.h
index a48795f..2479785 100644
--- a/arch/arm/mach-davinci/include/mach/io.h
+++ b/arch/arm/mach-davinci/include/mach/io.h
@@ -40,22 +40,12 @@
#else
#define IOMEM(x) ((void __force __iomem *)(x))
-/*
- * Functions to access the DaVinci IO region
- *
- * NOTE: - Use davinci_read/write[bwl] for physical register addresses
- * - Use __raw_read/write[bwl]() for virtual register addresses
- * - Use IO_ADDRESS(phys_addr) to convert registers to virtual addresses
- * - DO NOT use hardcoded virtual addresses to allow changing the
- * IO address space again if needed
- */
-#define davinci_readb(a) __raw_readb(IO_ADDRESS(a))
-#define davinci_readw(a) __raw_readw(IO_ADDRESS(a))
-#define davinci_readl(a) __raw_readl(IO_ADDRESS(a))
+#define __arch_ioremap(p, s, t) davinci_ioremap(p, s, t)
+#define __arch_iounmap(v) davinci_iounmap(v)
-#define davinci_writeb(v, a) __raw_writeb(v, IO_ADDRESS(a))
-#define davinci_writew(v, a) __raw_writew(v, IO_ADDRESS(a))
-#define davinci_writel(v, a) __raw_writel(v, IO_ADDRESS(a))
+void __iomem *davinci_ioremap(unsigned long phys, size_t size,
+ unsigned int type);
+void davinci_iounmap(volatile void __iomem *addr);
#endif /* __ASSEMBLER__ */
#endif /* __ASM_ARCH_IO_H */