The address of cpu power registers in pmu is based on cpu number
offsets. This function calculate the same. This is essentially
required in case of multi-cluster SoC's e.g Exynos5420.

Signed-off-by: Chander Kashyap <redacted>
Signed-off-by: Chander Kashyap <redacted>
---
 arch/arm/mach-exynos/regs-pmu.h |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index 4179f6a..485aefd 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h

@@ -325,4 +325,13 @@
 
 #define EXYNOS5420_SWRESET_KFC_SEL				0x3
 
+#include <asm/cputype.h>
+#define MAX_CPUS_IN_CLUSTER	4
+
+static inline unsigned int exynos_pmu_cpunr(unsigned int mpidr)
+{
+	return ((MPIDR_AFFINITY_LEVEL(mpidr, 1) * MAX_CPUS_IN_CLUSTER)
+		 + MPIDR_AFFINITY_LEVEL(mpidr, 0));
+}
+
 #endif /* __ASM_ARCH_REGS_PMU_H */

-- 
1.7.9.5