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ARM: at91: remove wait_for_interrupt definition

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All the "wait_for_interrupt" definition are aliases to cpu_do_idle.
Only the rm9200 has an asm routine to switch to wfi. But the cpu_do_idle
for this platform has exactly the same asm routine.

arch/arm/mm/proc-arm920.S
..
ENTRY(cpu_arm920_do_idle)
        mcr     p15, 0, r0, c7, c0, 4           @ Wait for interrupt
..

Then it is safe to invoke cpu_do_idle for this platform. As all the
wait_for_interrupts are definition for cpu_do_idle, let's remove it
and replace its invokation by cpu_do_idle.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Daniel Lezcano 2012-01-25 00:56:07 +01:00 committed by Nicolas Ferre
parent fa50ae9c10
commit b59160f6c0
2 changed files with 1 additions and 10 deletions
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2
arch/arm/mach-at91/pm.c
View File

@ -262,7 +262,7 @@ static int at91_pm_enter(suspend_state_t state)
: /* no input */
: "r0");
saved_lpr = sdram_selfrefresh_enable();
wait_for_interrupt_enable();
cpu_do_idle();
sdram_selfrefresh_disable(saved_lpr);
break;

9
arch/arm/mach-at91/pm.h
View File

@ -36,10 +36,6 @@ static inline u32 sdram_selfrefresh_enable(void)
#define sdram_selfrefresh_disable(saved_lpr) \
at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
#define wait_for_interrupt_enable() \
asm volatile ("mcr p15, 0, %0, c7, c0, 4" \
: : "r" (0))
#elif defined(CONFIG_ARCH_AT91SAM9G45)
#include <mach/at91sam9_ddrsdr.h>
@ -76,8 +72,6 @@ static inline u32 sdram_selfrefresh_enable(void)
at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1); \
} while (0)
#define wait_for_interrupt_enable() cpu_do_idle()
#else
#include <mach/at91sam9_sdramc.h>
@ -104,9 +98,6 @@ static inline u32 sdram_selfrefresh_enable(void)
#define sdram_selfrefresh_disable(saved_lpr) \
at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr)
#define wait_for_interrupt_enable() \
cpu_do_idle()
#endif
#endif