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authorWenyou Yang <wenyou.yang@atmel.com>2015-03-09 11:54:26 +0800
committerNicolas Ferre <nicolas.ferre@atmel.com>2015-03-13 13:34:55 +0100
commit385acc0dac88d79447a03a1363072fc258429dec (patch)
tree077716a902e08443bbe6e52fb0a637f5b8ea98c9 /arch/arm/mach-at91
parent20567658b8f010eea287087bfdbeb25757801aed (diff)
downloadop-kernel-dev-385acc0dac88d79447a03a1363072fc258429dec.zip
op-kernel-dev-385acc0dac88d79447a03a1363072fc258429dec.tar.gz
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/mach-at91')
-rw-r--r--arch/arm/mach-at91/pm.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 9fb868d..ac947cd 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)
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