mfd : Check if the other db8500 core is in WFI

This patch allows to check if the other core is in WFI
mode. It is the last check the idle routine has to do before
entering into the retention state.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h
index 926bdb3adc0..048a534fde3 100644
--- a/include/linux/mfd/db8500-prcmu.h
+++ b/include/linux/mfd/db8500-prcmu.h
@@ -585,6 +585,7 @@ int db8500_prcmu_gic_recouple(void);
 int db8500_prcmu_copy_gic_settings(void);
 bool db8500_prcmu_gic_pending_irq(void);
 bool db8500_prcmu_pending_irq(void);
+bool db8500_prcmu_is_cpu_in_wfi(int cpu);
 void db8500_prcmu_enable_wakeups(u32 wakeups);
 int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state);
 int db8500_prcmu_request_clock(u8 clock, bool enable);
diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
index 5c72c07e20e..eaa99a02178 100644
--- a/include/linux/mfd/dbx500-prcmu.h
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -305,6 +305,14 @@ static inline bool prcmu_gic_pending_irq(void)
                 return db8500_prcmu_gic_pending_irq();
 }
 
+static inline bool prcmu_is_cpu_in_wfi(int cpu)
+{
+        if (cpu_is_u5500())
+                return -EINVAL;
+        else
+                return db8500_prcmu_is_cpu_in_wfi(cpu);
+}
+
 static inline int prcmu_copy_gic_settings(void)
 {
         if (cpu_is_u5500())