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>

diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
index 0f4ffd6d47c43cc1c1fe50cb69a856f971bed938..04eddb4f438095da0fff7caee5f4561b7fe2c1f3 100644 (file)
--- 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;
 }