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e9d6b3358a
Add API to detect SCU base address from CP15. Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Stephen Warren <swarren@nvidia.com>
32 lines
571 B
C
32 lines
571 B
C
#ifndef __ASMARM_ARCH_SCU_H
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#define __ASMARM_ARCH_SCU_H
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#define SCU_PM_NORMAL 0
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#define SCU_PM_DORMANT 2
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#define SCU_PM_POWEROFF 3
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#ifndef __ASSEMBLER__
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#include <asm/cputype.h>
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static inline bool scu_a9_has_base(void)
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{
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return read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9;
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}
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static inline unsigned long scu_a9_get_base(void)
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{
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unsigned long pa;
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asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa));
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return pa;
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}
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unsigned int scu_get_core_count(void __iomem *);
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void scu_enable(void __iomem *);
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int scu_power_mode(void __iomem *, unsigned int);
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#endif
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#endif
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