ARM: highbank: add a power request clear

When we fail to power down, we need to clear out the power request.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/arm/mach-highbank/sysregs.h b/arch/arm/mach-highbank/sysregs.h
index 707cfd3d80ec..70af9d13fcef 100644
--- a/arch/arm/mach-highbank/sysregs.h
+++ b/arch/arm/mach-highbank/sysregs.h
@@ -44,6 +44,15 @@ static inline void highbank_set_core_pwr(void)
                 writel_relaxed(1, sregs_base + SREG_CPU_PWR_CTRL(cpu));
 }
 
+static inline void highbank_clear_core_pwr(void)
+{
+        int cpu = cpu_logical_map(smp_processor_id());
+        if (scu_base_addr)
+                scu_power_mode(scu_base_addr, SCU_PM_NORMAL);
+        else
+                writel_relaxed(0, sregs_base + SREG_CPU_PWR_CTRL(cpu));
+}
+
 static inline void highbank_set_pwr_suspend(void)
 {
         writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ);
@@ -68,4 +77,10 @@ static inline void highbank_set_pwr_hard_reset(void)
         highbank_set_core_pwr();
 }
 
+static inline void highbank_clear_pwr_request(void)
+{
+        writel(~0UL, sregs_base + HB_SREG_A9_PWR_REQ);
+        highbank_clear_core_pwr();
+}
+
 #endif