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

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>

1 files changed, 18 insertions, 1 deletions

diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
index 0f4ffd6d47c..04eddb4f438 100644
--- a/arch/arm/mach-highbank/pm.c
+++ b/arch/arm/mach-highbank/pm.c
@@ -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;
 }