mfd: Decouple/recouple gic from the ux500 PRCMU

This patch allows to decouple and recouple the gic from the PRCMU.
This is needed to put the A9 core in retention mode with the cpuidle
driver.

It is based on top of the "DB8500 PRCMU update" patchset.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Rickard Andersson <rickard.andersson@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
index b3b5adfa9e41..5bf5c4f0132c 100644
--- a/include/linux/mfd/dbx500-prcmu.h
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -281,6 +281,22 @@ static inline u8 prcmu_get_power_state_result(void)
                 return db8500_prcmu_get_power_state_result();
 }
 
+static inline int prcmu_gic_decouple(void)
+{
+        if (cpu_is_u5500())
+                return -EINVAL;
+        else
+                return db8500_prcmu_gic_decouple();
+}
+
+static inline int prcmu_gic_recouple(void)
+{
+        if (cpu_is_u5500())
+                return -EINVAL;
+        else
+                return db8500_prcmu_gic_recouple();
+}
+
 static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
 {
         if (cpu_is_u5500())