From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/arm/include/asm/smp_scu.h | 62 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 arch/arm/include/asm/smp_scu.h (limited to 'arch/arm/include/asm/smp_scu.h') diff --git a/arch/arm/include/asm/smp_scu.h b/arch/arm/include/asm/smp_scu.h new file mode 100644 index 000000000..b818e5d0c --- /dev/null +++ b/arch/arm/include/asm/smp_scu.h @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASMARM_ARCH_SCU_H +#define __ASMARM_ARCH_SCU_H + +#define SCU_PM_NORMAL 0 +#define SCU_PM_DORMANT 2 +#define SCU_PM_POWEROFF 3 + +#ifndef __ASSEMBLER__ + +#include +#include + +static inline bool scu_a9_has_base(void) +{ + return read_cpuid_part() == ARM_CPU_PART_CORTEX_A9; +} + +static inline unsigned long scu_a9_get_base(void) +{ + unsigned long pa; + + asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa)); + + return pa; +} + +#ifdef CONFIG_HAVE_ARM_SCU +unsigned int scu_get_core_count(void __iomem *); +int scu_power_mode(void __iomem *, unsigned int); +int scu_cpu_power_enable(void __iomem *, unsigned int); +int scu_get_cpu_power_mode(void __iomem *scu_base, unsigned int logical_cpu); +#else +static inline unsigned int scu_get_core_count(void __iomem *scu_base) +{ + return 0; +} +static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode) +{ + return -EINVAL; +} +static inline int scu_cpu_power_enable(void __iomem *scu_base, + unsigned int mode) +{ + return -EINVAL; +} +static inline int scu_get_cpu_power_mode(void __iomem *scu_base, + unsigned int logical_cpu) +{ + return -EINVAL; +} +#endif + +#if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU) +void scu_enable(void __iomem *scu_base); +#else +static inline void scu_enable(void __iomem *scu_base) {} +#endif + +#endif + +#endif -- cgit v1.2.3