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| author | Wenyou Yang <wenyou.yang@atmel.com> | 2015-03-09 04:54:26 +0100 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2015-03-13 13:34:55 +0100 |
| commit | 385acc0dac88d79447a03a1363072fc258429dec (patch) | |
| tree | 077716a902e08443bbe6e52fb0a637f5b8ea98c9 /arch/arm | |
| parent | ARM: at91/pm_suspend: add the WFI instruction support for ARMv7 (diff) | |
| download | linux-385acc0dac88d79447a03a1363072fc258429dec.tar.xz linux-385acc0dac88d79447a03a1363072fc258429dec.zip | |
ARM: at91/pm: flush data cache and clean, invalidate and disable the L2 cache
Flush data cache, and clean, invalidate and disable the L2 cache before going to suspend.
Restore the L2 cache configuration and re-enable the L2 cache after waking up.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-at91/pm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 9fb868d2b9da..ac947cdd506c 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -30,6 +30,7 @@ #include <asm/mach/time.h> #include <asm/mach/irq.h> #include <asm/fncpy.h> +#include <asm/cacheflush.h> #include <mach/cpu.h> #include <mach/hardware.h> @@ -133,8 +134,13 @@ static void at91_pm_suspend(suspend_state_t state) pm_data |= (state == PM_SUSPEND_MEM) ? AT91_PM_MODE(AT91_PM_SLOW_CLOCK) : 0; + flush_cache_all(); + outer_disable(); + at91_suspend_sram_fn(at91_pmc_base, at91_ramc_base[0], at91_ramc_base[1], pm_data); + + outer_resume(); } static int at91_pm_enter(suspend_state_t state) |