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, 4 deletions

diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 71dbee42edf9..839548d94185 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -17,6 +17,7 @@
 #include <linux/suspend.h>
 #include <linux/platform_device.h>
 #include <linux/sysdev.h>
+#include <linux/io.h>
 
 #include <asm/mach/map.h>
 #include <mach/hardware.h>
@@ -28,6 +29,8 @@
 #include <mach/ohci.h>
 #include <mach/pm.h>
 #include <mach/dma.h>
+#include <mach/smemc.h>
+
 #include <plat/i2c.h>
 
 #include "generic.h"
@@ -255,7 +258,7 @@ enum {
 
 void pxa27x_cpu_pm_save(unsigned long *sleep_save)
 {
-        SAVE(MDREFR);
+        sleep_save[SLEEP_SAVE_MDREFR] = __raw_readl(MDREFR);
         SAVE(PCFR);
 
         SAVE(CKEN);
@@ -264,7 +267,7 @@ void pxa27x_cpu_pm_save(unsigned long *sleep_save)
 
 void pxa27x_cpu_pm_restore(unsigned long *sleep_save)
 {
-        RESTORE(MDREFR);
+        __raw_writel(sleep_save[SLEEP_SAVE_MDREFR], MDREFR);
         RESTORE(PCFR);
 
         PSSR = PSSR_RDH | PSSR_PH;
@@ -373,8 +376,8 @@ void __init pxa27x_init_irq(void)
 
 static struct map_desc pxa27x_io_desc[] __initdata = {
         {       /* Mem Ctl */
-                .virtual        =  0xf6000000,
-                .pfn            = __phys_to_pfn(0x48000000),
+                .virtual        = SMEMC_VIRT,
+                .pfn            = __phys_to_pfn(PXA2XX_SMEMC_BASE),
                 .length         = 0x00200000,
                 .type           = MT_DEVICE
         }, {    /* IMem ctl */