lkml.org 
[lkml]   [2015]   [Feb]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/3] pm: at91: flush data cache and clean, invalidate and disable the L2 cache
Date
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(+)

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


\
 
 \ /
  Last update: 2015-02-12 04:21    [W:0.035 / U:2.804 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site