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ARM: EXYNOS: add generic function to calculate cpu number

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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 */