1 files changed, 65 insertions, 0 deletions

diff --git a/arch/sh/include/asm/suspend.h b/arch/sh/include/asm/suspend.h
index 5c8ea28ff7a4..fe9c2a1ad047 100644
--- a/arch/sh/include/asm/suspend.h
+++ b/arch/sh/include/asm/suspend.h
@@ -2,6 +2,7 @@
 #define _ASM_SH_SUSPEND_H
 
 #ifndef __ASSEMBLY__
+#include <linux/notifier.h>
 static inline int arch_prepare_suspend(void) { return 0; }
 
 #include <asm/ptrace.h>
@@ -19,6 +20,69 @@ void sh_mobile_setup_cpuidle(void);
 static inline void sh_mobile_setup_cpuidle(void) {}
 #endif
 
+/* notifier chains for pre/post sleep hooks */
+extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list;
+extern struct atomic_notifier_head sh_mobile_post_sleep_notifier_list;
+
+/* priority levels for notifiers */
+#define SH_MOBILE_SLEEP_BOARD   0
+#define SH_MOBILE_SLEEP_CPU     1
+#define SH_MOBILE_PRE(x)        (x)
+#define SH_MOBILE_POST(x)       (-(x))
+
+/* board code registration function for self-refresh assembly snippets */
+void sh_mobile_register_self_refresh(unsigned long flags,
+                                     void *pre_start, void *pre_end,
+                                     void *post_start, void *post_end);
+
+/* register structure for address/data information */
+struct sh_sleep_regs {
+        unsigned long stbcr;
+        unsigned long bar;
+
+        /* MMU */
+        unsigned long pteh;
+        unsigned long ptel;
+        unsigned long ttb;
+        unsigned long tea;
+        unsigned long mmucr;
+        unsigned long ptea;
+        unsigned long pascr;
+        unsigned long irmcr;
+
+        /* Cache */
+        unsigned long ccr;
+        unsigned long ramcr;
+};
+
+/* data area for low-level sleep code */
+struct sh_sleep_data {
+        /* current sleep mode (SUSP_SH_...) */
+        unsigned long mode;
+
+        /* addresses of board specific self-refresh snippets */
+        unsigned long sf_pre;
+        unsigned long sf_post;
+
+        /* address of resume code */
+        unsigned long resume;
+
+        /* register state saved and restored by the assembly code */
+        unsigned long vbr;
+        unsigned long spc;
+        unsigned long sr;
+        unsigned long sp;
+
+        /* structure for keeping register addresses */
+        struct sh_sleep_regs addr;
+
+        /* structure for saving/restoring register state */
+        struct sh_sleep_regs data;
+};
+
+/* a bitmap of supported sleep modes (SUSP_SH..) */
+extern unsigned long sh_mobile_sleep_supported;
+
 #endif
 
 /* flags passed to assembly suspend code */
@@ -27,5 +91,6 @@ static inline void sh_mobile_setup_cpuidle(void) {}
 #define SUSP_SH_RSTANDBY        (1 << 2) /* SH-Mobile R-standby mode */
 #define SUSP_SH_USTANDBY        (1 << 3) /* SH-Mobile U-standby mode */
 #define SUSP_SH_SF              (1 << 4) /* Enable self-refresh */
+#define SUSP_SH_MMU             (1 << 5) /* Save/restore MMU and cache */
 
 #endif /* _ASM_SH_SUSPEND_H */