[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, 10 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index ca053226fba0..36638926c5ce 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -26,9 +26,19 @@
 #include <asm/mach/map.h>
 
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/reset.h>
 
 #include "generic.h"
 
+void clear_reset_status(unsigned int mask)
+{
+        if (cpu_is_pxa2xx())
+                pxa2xx_clear_reset_status(mask);
+
+        if (cpu_is_pxa3xx())
+                pxa3xx_clear_reset_status(mask);
+}
+
 /*
  * Get the clock frequency as reflected by CCCR and the turbo flag.
  * We assume these values have been applied via a fcs.