arch/sh/include/asm/suspend.h

   1 #ifndef _ASM_SH_SUSPEND_H
   2 #define _ASM_SH_SUSPEND_H
   3
   4 #ifndef __ASSEMBLY__
   5 #include <linux/notifier.h>
   6
   7 #include <asm/ptrace.h>
   8
   9 struct swsusp_arch_regs {
  10         struct pt_regs user_regs;
  11         unsigned long bank1_regs[8];
  12 };
  13
  14 void sh_mobile_call_standby(unsigned long mode);
  15
  16 #ifdef CONFIG_CPU_IDLE
  17 int sh_mobile_setup_cpuidle(void);
  18 #else
  19 static inline int sh_mobile_setup_cpuidle(void) { return 0; }
  20 #endif
  21
  22 /* notifier chains for pre/post sleep hooks */
  23 extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list;
  24 extern struct atomic_notifier_head sh_mobile_post_sleep_notifier_list;
  25
  26 /* priority levels for notifiers */
  27 #define SH_MOBILE_SLEEP_BOARD   0
  28 #define SH_MOBILE_SLEEP_CPU     1
  29 #define SH_MOBILE_PRE(x)        (x)
  30 #define SH_MOBILE_POST(x)       (-(x))
  31
  32 /* board code registration function for self-refresh assembly snippets */
  33 void sh_mobile_register_self_refresh(unsigned long flags,
  34                                      void *pre_start, void *pre_end,
  35                                      void *post_start, void *post_end);
  36
  37 /* register structure for address/data information */
  38 struct sh_sleep_regs {
  39         unsigned long stbcr;
  40         unsigned long bar;
  41
  42         /* MMU */
  43         unsigned long pteh;
  44         unsigned long ptel;
  45         unsigned long ttb;
  46         unsigned long tea;
  47         unsigned long mmucr;
  48         unsigned long ptea;
  49         unsigned long pascr;
  50         unsigned long irmcr;
  51
  52         /* Cache */
  53         unsigned long ccr;
  54         unsigned long ramcr;
  55 };
  56
  57 /* data area for low-level sleep code */
  58 struct sh_sleep_data {
  59         /* current sleep mode (SUSP_SH_...) */
  60         unsigned long mode;
  61
  62         /* addresses of board specific self-refresh snippets */
  63         unsigned long sf_pre;
  64         unsigned long sf_post;
  65
  66         /* address of resume code */
  67         unsigned long resume;
  68
  69         /* register state saved and restored by the assembly code */
  70         unsigned long vbr;
  71         unsigned long spc;
  72         unsigned long sr;
  73         unsigned long sp;
  74
  75         /* structure for keeping register addresses */
  76         struct sh_sleep_regs addr;
  77
  78         /* structure for saving/restoring register state */
  79         struct sh_sleep_regs data;
  80 };
  81
  82 /* a bitmap of supported sleep modes (SUSP_SH..) */
  83 extern unsigned long sh_mobile_sleep_supported;
  84
  85 #endif
  86
  87 /* flags passed to assembly suspend code */
  88 #define SUSP_SH_SLEEP           (1 << 0) /* Regular sleep mode */
  89 #define SUSP_SH_STANDBY         (1 << 1) /* SH-Mobile Software standby mode */
  90 #define SUSP_SH_RSTANDBY        (1 << 2) /* SH-Mobile R-standby mode */
  91 #define SUSP_SH_USTANDBY        (1 << 3) /* SH-Mobile U-standby mode */
  92 #define SUSP_SH_SF              (1 << 4) /* Enable self-refresh */
  93 #define SUSP_SH_MMU             (1 << 5) /* Save/restore MMU and cache */
  94 #define SUSP_SH_REGS            (1 << 6) /* Save/restore registers */
  95
  96 #endif /* _ASM_SH_SUSPEND_H */