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

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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>
This commit is contained in:
Eric Miao
2008-07-29 14:26:00 +08:00
parent ab27712142
commit 04fef228fb
10 changed files with 79 additions and 3 deletions
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7
arch/arm/mach-pxa/reset.c
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@@ -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':