Commit 31f1a8b0 authored by Yinbo Zhu's avatar Yinbo Zhu Committed by Huacai Chen
Browse files

LoongArch: Export some arch-specific pm interfaces 



Some PMC (Power Management Controllers) need to support DTS and will use
the suspend interfaces thus this patch was to export such interfaces for
their use.

Signed-off-by: default avatarYinbo Zhu <zhuyinbo@loongson.cn>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent 01158487

arch/loongarch/include/asm/acpi.h

+2 −2
Original line number Diff line number Diff line
@@ -8,6 +8,8 @@ 
#ifndef _ASM_LOONGARCH_ACPI_H

#define _ASM_LOONGARCH_ACPI_H



#include <asm/suspend.h>



#ifdef CONFIG_ACPI

extern int acpi_strict;

extern int acpi_disabled;
@@ -46,12 +48,10 @@ static inline u32 get_acpi_id_for_cpu(unsigned int cpu) 


extern int loongarch_acpi_suspend(void);

extern int (*acpi_suspend_lowlevel)(void);

extern void loongarch_suspend_enter(void);



static inline unsigned long acpi_get_wakeup_address(void)

{

#ifdef CONFIG_SUSPEND

	extern void loongarch_wakeup_start(void);

	return (unsigned long)loongarch_wakeup_start;

#endif

	return 0UL;

arch/loongarch/include/asm/suspend.h

0 → 100644
+10 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __ASM_SUSPEND_H

#define __ASM_SUSPEND_H



void loongarch_common_suspend(void);

void loongarch_common_resume(void);

void loongarch_suspend_enter(void);

void loongarch_wakeup_start(void);



#endif

arch/loongarch/power/suspend.c

+4 −4
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ struct saved_registers { 
};

static struct saved_registers saved_regs;



static void arch_common_suspend(void)

void loongarch_common_suspend(void)

{

	save_counter();

	saved_regs.pgd = csr_read64(LOONGARCH_CSR_PGDL);
@@ -40,7 +40,7 @@ static void arch_common_suspend(void) 
	loongarch_suspend_addr = loongson_sysconf.suspend_addr;

}



static void arch_common_resume(void)

void loongarch_common_resume(void)

{

	sync_counter();

	local_flush_tlb_all();
@@ -62,12 +62,12 @@ int loongarch_acpi_suspend(void) 
	enable_gpe_wakeup();

	enable_pci_wakeup();



	arch_common_suspend();

	loongarch_common_suspend();



	/* processor specific suspend */

	loongarch_suspend_enter();



	arch_common_resume();

	loongarch_common_resume();



	return 0;

}