arm/imx: remove cpu_is_xxx() check from __imx_ioremap()

This patch adds an ioremap hook imx_ioremap to be called in
__imx_ioremap().  Any soc that needs a customized ioremap other
than __arm_ioremap() can set up this hook in soc specific call.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c
index 6fad0d6..9f0e82e 100644 (file)
--- a/arch/arm/mach-imx/mm-imx3.c
+++ b/arch/arm/mach-imx/mm-imx3.c
@@ -58,6 +58,23 @@ static void imx3_idle(void)
                : "=r" (reg));
 }
 
+static void __iomem *imx3_ioremap(unsigned long phys_addr, size_t size,
+                                 unsigned int mtype)
+{
+       if (mtype == MT_DEVICE) {
+               /*
+                * Access all peripherals below 0x80000000 as nonshared device
+                * on mx3, but leave l2cc alone.  Otherwise cache corruptions
+                * can occur.
+                */
+               if (phys_addr < 0x80000000 &&
+                               !addr_in_module(phys_addr, MX3x_L2CC))
+                       mtype = MT_DEVICE_NONSHARED;
+       }
+
+       return __arm_ioremap(phys_addr, size, mtype);
+}
+
 void imx3_init_l2x0(void)
 {
        void __iomem *l2x0_base;
@@ -127,6 +144,7 @@ void __init imx31_init_early(void)
        mxc_set_cpu_type(MXC_CPU_MX31);
        mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
        imx_idle = imx3_idle;
+       imx_ioremap = imx3_ioremap;
 }
 
 void __init imx35_init_early(void)
@@ -135,6 +153,7 @@ void __init imx35_init_early(void)
        mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
        mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR));
        imx_idle = imx3_idle;
+       imx_ioremap = imx3_ioremap;
 }
 
 void __init mx31_init_irq(void)

diff --git a/arch/arm/plat-mxc/include/mach/io.h b/arch/arm/plat-mxc/include/mach/io.h
index 4347a87..338300b 100644 (file)
--- a/arch/arm/plat-mxc/include/mach/io.h
+++ b/arch/arm/plat-mxc/include/mach/io.h
@@ -14,32 +14,22 @@
 /* Allow IO space to be anywhere in the memory */
 #define IO_SPACE_LIMIT 0xffffffff
 
-#if defined(CONFIG_SOC_IMX31) || defined(CONFIG_SOC_IMX35)
-#include <mach/hardware.h>
-
 #define __arch_ioremap __imx_ioremap
 #define __arch_iounmap __iounmap
 
 #define addr_in_module(addr, mod) \
        ((unsigned long)(addr) - mod ## _BASE_ADDR < mod ## _SIZE)
 
+extern void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int);
+
 static inline void __iomem *
 __imx_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
 {
-       if (mtype == MT_DEVICE && (cpu_is_mx31() || cpu_is_mx35())) {
-               /*
-                * Access all peripherals below 0x80000000 as nonshared device
-                * on mx3, but leave l2cc alone.  Otherwise cache corruptions
-                * can occur.
-                */
-               if (phys_addr < 0x80000000 &&
-                               !addr_in_module(phys_addr, MX3x_L2CC))
-                       mtype = MT_DEVICE_NONSHARED;
-       }
-
-       return __arm_ioremap(phys_addr, size, mtype);
+       if (imx_ioremap != NULL)
+               return imx_ioremap(phys_addr, size, mtype);
+       else
+               return __arm_ioremap(phys_addr, size, mtype);
 }
-#endif
 
 /* io address mapping macro */
 #define __io(a)                __typesafe_io(a)

diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c
index 5fa03e7..9dad8dc 100644 (file)
--- a/arch/arm/plat-mxc/system.c
+++ b/arch/arm/plat-mxc/system.c
@@ -29,6 +29,7 @@
 #include <asm/mach-types.h>
 
 void (*imx_idle)(void) = NULL;
+void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int) = NULL;
 
 static void __iomem *wdog_base;