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sh: SuperH Mobile suspend support

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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>
This commit is contained in:
Magnus Damm
2009-03-13 15:23:04 +00:00
committed by Paul Mundt
parent 7a516280b6
commit 7759491274
5 changed files with 231 additions and 0 deletions
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9
arch/sh/include/asm/suspend.h
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@@ -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 */