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ARM: highbank: save and restore L2 cache and GIC on suspend

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This fixes suspend to RAM adding necessary save and restore of L2 and GIC.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Rob Herring 2012-12-30 10:15:07 -06:00 committed by Olof Johansson
parent 9852910a0b
commit 1ddda1cd23
1 changed files with 18 additions and 1 deletions
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19
arch/arm/mach-highbank/pm.c
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@ -14,10 +14,12 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/cpu_pm.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/suspend.h>
#include <asm/cacheflush.h>
#include <asm/proc-fns.h>
#include <asm/suspend.h>
@ -26,16 +28,31 @@
static int highbank_suspend_finish(unsigned long val)
{
outer_flush_all();
outer_disable();
highbank_set_pwr_suspend();
cpu_do_idle();
highbank_clear_pwr_request();
return 0;
}
static int highbank_pm_enter(suspend_state_t state)
{
highbank_set_pwr_suspend();
cpu_pm_enter();
cpu_cluster_pm_enter();
highbank_set_cpu_jump(0, cpu_resume);
cpu_suspend(0, highbank_suspend_finish);
cpu_cluster_pm_exit();
cpu_pm_exit();
highbank_smc1(0x102, 0x1);
if (scu_base_addr)
scu_enable(scu_base_addr);
return 0;
}