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ARM: EXYNOS: add generic function to calculate cpu number 

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 <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Chander Kashyap 2014-07-05 06:24:35 +09:00 committed by Kukjin Kim
parent e2e54362d9
commit 6ec4f8d0d9
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-exynos/regs-pmu.h
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@ -323,4 +323,13 @@
#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 */