[ARM] pxa: introduce reset_status and clear_reset_status for driver's usage

Due to the problem of reset status bits being handled by different
registers between pxa2xx and pxa3xx, introduce a global reset_status
variable, initialized by SoC-specific code and later being used by
other drivers.

And also introduce clear_reset_status(), which is used to clear the
corresponding status bits. Pass RESET_STATUS_ALL to clear all bits.

Signed-off-by: Eric Miao <eric.miao@marvell.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/arch/arm/mach-pxa/reset.c b/arch/arm/mach-pxa/reset.c
index d610a1244abb..56f60d923a9d 100644
--- a/arch/arm/mach-pxa/reset.c
+++ b/arch/arm/mach-pxa/reset.c
@@ -11,9 +11,11 @@
 #include <asm/proc-fns.h>
 
 #include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/reset.h>
 
+unsigned int reset_status;
+EXPORT_SYMBOL(reset_status);
+
 static void do_hw_reset(void);
 
 static int reset_gpio = -1;
@@ -78,8 +80,7 @@ static void do_hw_reset(void)
 
 void arch_reset(char mode)
 {
-        if (cpu_is_pxa2xx())
-                RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
+        clear_reset_status(RESET_STATUS_ALL);
 
         switch (mode) {
         case 's':