arch/arm/mach-mt8127/include/mach/mt_dormant.h

   1 #ifndef _MT_DORMANT_
   2 #define _MT_DORMANT_
   3
   4 #define MAX_CPUS 1
   5
   6 /*
   7  * Power status
   8  */
   9 #define STATUS_RUN      0
  10 #define STATUS_STANDBY  1
  11 #define STATUS_DORMANT  2
  12 #define STATUS_SHUTDOWN 3
  13 #define DORMANT_MODE  STATUS_DORMANT
  14 #define SHUTDOWN_MODE STATUS_SHUTDOWN
  15
  16 /*
  17  * switch to amp / smp
  18  */
  19 #define switch_to_amp()                         \
  20 do {                                            \
  21     isb();                                      \
  22     dsb();                                      \
  23     asm volatile(                               \
  24         "MRC p15,0,r0,c1,c0,1\n"                \
  25         "BIC r0,r0,#0x00000040\n"               \
  26         "MCR p15,0,r0,c1,c0,1\n"                \
  27         :                                       \
  28         :                                       \
  29         :"r0"                                   \
  30     );                                          \
  31     isb();                                      \
  32     dsb();                                      \
  33 } while (0)
  34
  35 #define switch_to_smp()                         \
  36 do {                                            \
  37     isb();                                      \
  38     dsb();                                      \
  39     asm volatile(                               \
  40         "MRC p15,0,r0,c1,c0,1\n"                \
  41         "ORR r0,r0,#0x00000040\n"               \
  42         "MCR p15,0,r0,c1,c0,1\n"                \
  43         :                                       \
  44         :                                       \
  45         :"r0"                                   \
  46     );                                          \
  47     isb();                                      \
  48     dsb();                                      \
  49 } while (0)
  50
  51 /* input value:
  52  * DORMANT_MODE / SHUTDOWN_MODE
  53  *
  54  * return value:
  55  * 0 : execute wfi then power down
  56  * 1 : wake up and resume
  57  */
  58 extern int cpu_power_down(int mode);
  59 extern void cpu_dormant_init(void);
  60 extern void cpu_check_dormant_abort(void);
  61
  62 #endif
  63