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lib: sbi: Add system_resume callback for restoring the system

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The last core who performs the system suspend is responsible for
restoring the system after waking up. Add the system_resume callback for
restoring the system from suspend.

Suggested-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251020-cache-upstream-v7-11-69a132447d8a@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Nick Hu
2025-10-20 14:34:13 +08:00
committed by Anup Patel
parent 8f8c393155
commit ab23d8a392
3 changed files with 28 additions and 1 deletions
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7
include/sbi/sbi_system.h
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@ -69,11 +69,18 @@ struct sbi_system_suspend_device {
* return from system_suspend() may ignore this parameter.
*/
int (*system_suspend)(u32 sleep_type, unsigned long mmode_resume_addr);
/**
* Resume the system from system suspend
*/
void (*system_resume)(void);
};
const struct sbi_system_suspend_device *sbi_system_suspend_get_device(void);
void sbi_system_suspend_set_device(struct sbi_system_suspend_device *dev);
void sbi_system_suspend_test_enable(void);
void sbi_system_resume(void);
bool sbi_system_is_suspended(void);
bool sbi_system_suspend_supported(u32 sleep_type);
int sbi_system_suspend(u32 sleep_type, ulong resume_addr, ulong opaque);