arch/arm/include/asm/smp_scu.h

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