63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#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 <linux/errno.h>
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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() == 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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#ifdef CONFIG_HAVE_ARM_SCU
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unsigned int scu_get_core_count(void __iomem *);
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int scu_power_mode(void __iomem *, unsigned int);
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int scu_cpu_power_enable(void __iomem *, unsigned int);
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int scu_get_cpu_power_mode(void __iomem *scu_base, unsigned int logical_cpu);
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#else
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static inline unsigned int scu_get_core_count(void __iomem *scu_base)
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{
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return 0;
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}
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static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode)
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{
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return -EINVAL;
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}
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static inline int scu_cpu_power_enable(void __iomem *scu_base,
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unsigned int mode)
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{
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return -EINVAL;
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}
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static inline int scu_get_cpu_power_mode(void __iomem *scu_base,
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unsigned int logical_cpu)
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{
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return -EINVAL;
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}
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#endif
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#if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU)
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void scu_enable(void __iomem *scu_base);
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#else
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static inline void scu_enable(void __iomem *scu_base) {}
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#endif
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#endif
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#endif
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