Messages in this thread Patch in this message | | | From | Chander Kashyap <> | Subject | [Patch v7 2/6] arm: exynos: add generic function to calculate cpu number | Date | Mon, 16 Jun 2014 15:56:19 +0530 |
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From: Chander Kashyap <chander.kashyap@linaro.org>
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> Signed-off-by: Chander Kashyap <k.chander@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> --- 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 1d13b08..aff23bd 100644 --- a/arch/arm/mach-exynos/regs-pmu.h +++ b/arch/arm/mach-exynos/regs-pmu.h @@ -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 */ -- 1.7.9.5
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