162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef __ASMARM_ARCH_SCU_H 362306a36Sopenharmony_ci#define __ASMARM_ARCH_SCU_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#define SCU_PM_NORMAL 0 662306a36Sopenharmony_ci#define SCU_PM_DORMANT 2 762306a36Sopenharmony_ci#define SCU_PM_POWEROFF 3 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef __ASSEMBLER__ 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include <linux/errno.h> 1262306a36Sopenharmony_ci#include <asm/cputype.h> 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_cistatic inline bool scu_a9_has_base(void) 1562306a36Sopenharmony_ci{ 1662306a36Sopenharmony_ci return read_cpuid_part() == ARM_CPU_PART_CORTEX_A9; 1762306a36Sopenharmony_ci} 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_cistatic inline unsigned long scu_a9_get_base(void) 2062306a36Sopenharmony_ci{ 2162306a36Sopenharmony_ci unsigned long pa; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa)); 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci return pa; 2662306a36Sopenharmony_ci} 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci#ifdef CONFIG_HAVE_ARM_SCU 2962306a36Sopenharmony_ciunsigned int scu_get_core_count(void __iomem *); 3062306a36Sopenharmony_ciint scu_power_mode(void __iomem *, unsigned int); 3162306a36Sopenharmony_ciint scu_cpu_power_enable(void __iomem *, unsigned int); 3262306a36Sopenharmony_ciint scu_get_cpu_power_mode(void __iomem *scu_base, unsigned int logical_cpu); 3362306a36Sopenharmony_ci#else 3462306a36Sopenharmony_cistatic inline unsigned int scu_get_core_count(void __iomem *scu_base) 3562306a36Sopenharmony_ci{ 3662306a36Sopenharmony_ci return 0; 3762306a36Sopenharmony_ci} 3862306a36Sopenharmony_cistatic inline int scu_power_mode(void __iomem *scu_base, unsigned int mode) 3962306a36Sopenharmony_ci{ 4062306a36Sopenharmony_ci return -EINVAL; 4162306a36Sopenharmony_ci} 4262306a36Sopenharmony_cistatic inline int scu_cpu_power_enable(void __iomem *scu_base, 4362306a36Sopenharmony_ci unsigned int mode) 4462306a36Sopenharmony_ci{ 4562306a36Sopenharmony_ci return -EINVAL; 4662306a36Sopenharmony_ci} 4762306a36Sopenharmony_cistatic inline int scu_get_cpu_power_mode(void __iomem *scu_base, 4862306a36Sopenharmony_ci unsigned int logical_cpu) 4962306a36Sopenharmony_ci{ 5062306a36Sopenharmony_ci return -EINVAL; 5162306a36Sopenharmony_ci} 5262306a36Sopenharmony_ci#endif 5362306a36Sopenharmony_ci 5462306a36Sopenharmony_ci#if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU) 5562306a36Sopenharmony_civoid scu_enable(void __iomem *scu_base); 5662306a36Sopenharmony_ci#else 5762306a36Sopenharmony_cistatic inline void scu_enable(void __iomem *scu_base) {} 5862306a36Sopenharmony_ci#endif 5962306a36Sopenharmony_ci 6062306a36Sopenharmony_ci#endif 6162306a36Sopenharmony_ci 6262306a36Sopenharmony_ci#endif 63