1 files changed, 97 insertions, 0 deletions
diff --git a/arch/sh/include/asm/suspend.h b/arch/sh/include/asm/suspend.h
new file mode 100644
index 000000000..47db17520
--- /dev/null
+++ b/arch/sh/include/asm/suspend.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_SH_SUSPEND_H
+#define _ASM_SH_SUSPEND_H
+
+#ifndef __ASSEMBLY__
+#include <linux/notifier.h>
+
+#include <asm/ptrace.h>
+
+struct swsusp_arch_regs {
+	struct pt_regs user_regs;
+	unsigned long bank1_regs[8];
+};
+
+void sh_mobile_call_standby(unsigned long mode);
+
+#ifdef CONFIG_CPU_IDLE
+int sh_mobile_setup_cpuidle(void);
+#else
+static inline int sh_mobile_setup_cpuidle(void) { return 0; }
+#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 */
+#define SUSP_SH_SLEEP		(1 << 0) /* Regular sleep mode */
+#define SUSP_SH_STANDBY		(1 << 1) /* SH-Mobile Software standby mode */
+#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 */
+#define SUSP_SH_REGS		(1 << 6) /* Save/restore registers */
+
+#endif /* _ASM_SH_SUSPEND_H */