ARM: pxa: Access SMEMC via virtual addresses

This is important because on PXA3xx, the physical mapping of SMEMC registers
differs from the one on PXA2xx. In order to get PCMCIA working on both PXA2xx
and PXA320, the PCMCIA driver was adjusted accordingly as well.

Also, various places in the kernel had to be patched to use
__raw_read/__raw_write.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/arm/mach-pxa/xcep.c b/arch/arm/mach-pxa/xcep.c
index 99744f4d05a1..51c0281c6e0a 100644
--- a/arch/arm/mach-pxa/xcep.c
+++ b/arch/arm/mach-pxa/xcep.c
@@ -31,6 +31,7 @@
 #include <mach/hardware.h>
 #include <mach/pxa2xx-regs.h>
 #include <mach/mfp-pxa25x.h>
+#include <mach/smemc.h>
 
 #include "generic.h"
 
@@ -172,9 +173,9 @@ static void __init xcep_init(void)
 
         /* See Intel XScale Developer's Guide for details */
         /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
-        MSC1 = (MSC1 & 0xffff) | 0xD5540000;
+        __raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
         /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
-        MSC2 = (MSC2 & 0xffff) | 0x72A00000;
+        __raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
 
         platform_add_devices(ARRAY_AND_SIZE(devices));
         pxa_set_i2c_info(&xcep_i2c_platform_data);