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This patch adds atomic notifier chains for pre/post sleep events. Useful for cpu code and boards that need to save and restore register state before and after entering a sleep mode. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#ifndef _ASM_SH_SUSPEND_H
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#define _ASM_SH_SUSPEND_H
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#ifndef __ASSEMBLY__
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#include <linux/notifier.h>
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static inline int arch_prepare_suspend(void) { return 0; }
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#include <asm/ptrace.h>
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struct swsusp_arch_regs {
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struct pt_regs user_regs;
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unsigned long bank1_regs[8];
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};
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void sh_mobile_call_standby(unsigned long mode);
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#ifdef CONFIG_CPU_IDLE
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void sh_mobile_setup_cpuidle(void);
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#else
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static inline void sh_mobile_setup_cpuidle(void) {}
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#endif
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/* notifier chains for pre/post sleep hooks */
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extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list;
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extern struct atomic_notifier_head sh_mobile_post_sleep_notifier_list;
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/* priority levels for notifiers */
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#define SH_MOBILE_SLEEP_BOARD 0
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#define SH_MOBILE_SLEEP_CPU 1
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#define SH_MOBILE_PRE(x) (x)
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#define SH_MOBILE_POST(x) (-(x))
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#endif
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/* flags passed to assembly suspend code */
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#define SUSP_SH_SLEEP (1 << 0) /* Regular sleep mode */
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#define SUSP_SH_STANDBY (1 << 1) /* SH-Mobile Software standby mode */
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#define SUSP_SH_RSTANDBY (1 << 2) /* SH-Mobile R-standby mode */
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#define SUSP_SH_USTANDBY (1 << 3) /* SH-Mobile U-standby mode */
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#define SUSP_SH_SF (1 << 4) /* Enable self-refresh */
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#endif /* _ASM_SH_SUSPEND_H */
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