1 #ifndef __ASMARM_ARCH_SCU_H 2 #define __ASMARM_ARCH_SCU_H 3 4 #define SCU_PM_NORMAL 0 5 #define SCU_PM_DORMANT 2 6 #define SCU_PM_POWEROFF 3 7 8 #ifndef __ASSEMBLER__ 9 10 #include <linux/errno.h> 11 #include <asm/cputype.h> 12 13 static inline bool scu_a9_has_base(void) 14 { 15 return read_cpuid_part() == ARM_CPU_PART_CORTEX_A9; 16 } 17 18 static inline unsigned long scu_a9_get_base(void) 19 { 20 unsigned long pa; 21 22 asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa)); 23 24 return pa; 25 } 26 27 #ifdef CONFIG_HAVE_ARM_SCU 28 unsigned int scu_get_core_count(void __iomem *); 29 int scu_power_mode(void __iomem *, unsigned int); 30 #else 31 static inline unsigned int scu_get_core_count(void __iomem *scu_base) 32 { 33 return 0; 34 } 35 static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode) 36 { 37 return -EINVAL; 38 } 39 #endif 40 41 #if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU) 42 void scu_enable(void __iomem *scu_base); 43 #else 44 static inline void scu_enable(void __iomem *scu_base) {} 45 #endif 46 47 #endif 48 49 #endif 50