sh: SuperH Mobile suspend support

This patch contains CONFIG_SUSPEND support to the SuperH
architecture. If enabled, SuperH Mobile processors will
register their suspend callbacks during boot.

To suspend, use "echo mem > /sys/power/state". To allow
wakeup, make sure "/sys/device/platform/../power/wakeup"
contains "enabled". Additional per-device driver patches
are most likely needed.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/sh/include/asm/suspend.h b/arch/sh/include/asm/suspend.h
index 5d6d8aba5682..b1b995370e79 100644
--- a/arch/sh/include/asm/suspend.h
+++ b/arch/sh/include/asm/suspend.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_SH_SUSPEND_H
 #define _ASM_SH_SUSPEND_H
 
+#ifndef __ASSEMBLY__
 static inline int arch_prepare_suspend(void) { return 0; }
 
 #include <asm/ptrace.h>
@@ -9,5 +10,13 @@ struct swsusp_arch_regs {
         struct pt_regs user_regs;
         unsigned long bank1_regs[8];
 };
+#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 */
 
 #endif /* _ASM_SH_SUSPEND_H */