| Message ID | 1423709578-8475-1-git-send-email-wenyou.yang@atmel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 12/02/2015 at 10:52:58 +0800, Wenyou Yang wrote : > 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> > --- > arch/arm/mach-at91/pm.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c > index 9075b41..2574bad 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> > @@ -145,8 +146,13 @@ 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) > -- > 1.7.9.5 >
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 9075b41..2574bad 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> @@ -145,8 +146,13 @@ 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)
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> --- arch/arm/mach-at91/pm.c | 6 ++++++ 1 file changed, 6 insertions(+)