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, 7 insertions, 6 deletions

diff --git a/arch/arm/mach-pxa/cm-x2xx.c b/arch/arm/mach-pxa/cm-x2xx.c
index 47e242005fac..b734d8468168 100644
--- a/arch/arm/mach-pxa/cm-x2xx.c
+++ b/arch/arm/mach-pxa/cm-x2xx.c
@@ -24,6 +24,7 @@
 #include <mach/pxa2xx-regs.h>
 #include <mach/audio.h>
 #include <mach/pxafb.h>
+#include <mach/smemc.h>
 
 #include <asm/hardware/it8152.h>
 
@@ -392,9 +393,9 @@ static int cmx2xx_suspend(struct sys_device *dev, pm_message_t state)
         cmx2xx_pci_suspend();
 
         /* save MSC registers */
-        sleep_save_msc[0] = MSC0;
-        sleep_save_msc[1] = MSC1;
-        sleep_save_msc[2] = MSC2;
+        sleep_save_msc[0] = __raw_readl(MSC0);
+        sleep_save_msc[1] = __raw_readl(MSC1);
+        sleep_save_msc[2] = __raw_readl(MSC2);
 
         /* setup power saving mode registers */
         PCFR = 0x0;
@@ -416,9 +417,9 @@ static int cmx2xx_resume(struct sys_device *dev)
         cmx2xx_pci_resume();
 
         /* restore MSC registers */
-        MSC0 = sleep_save_msc[0];
-        MSC1 = sleep_save_msc[1];
-        MSC2 = sleep_save_msc[2];
+        __raw_writel(sleep_save_msc[0], MSC0);
+        __raw_writel(sleep_save_msc[1], MSC1);
+        __raw_writel(sleep_save_msc[2], MSC2);
 
         return 0;
 }