[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, 0 deletions

diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index c5b845b935bb..49a7a296ff31 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -28,6 +28,7 @@
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/mfp-pxa25x.h>
+#include <asm/arch/reset.h>
 #include <asm/arch/pm.h>
 #include <asm/arch/dma.h>
 
@@ -348,6 +349,9 @@ static int __init pxa25x_init(void)
                 clks_register(&pxa25x_hwuart_clk, 1);
 
         if (cpu_is_pxa21x() || cpu_is_pxa25x()) {
+
+                reset_status = RCSR;
+
                 clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));
 
                 if ((ret = pxa_init_dma(16)))