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: Yinbo Zhu <zhuyinbo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

diff --git a/arch/loongarch/include/asm/acpi.h b/arch/loongarch/include/asm/acpi.h
index 5c78b5d..8de6c4b 100644 (file)
--- a/arch/loongarch/include/asm/acpi.h
+++ b/arch/loongarch/include/asm/acpi.h
@@ -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;

diff --git a/arch/loongarch/include/asm/suspend.h b/arch/loongarch/include/asm/suspend.h
new file mode 100644 (file)
index 0000000..4025c9d
--- /dev/null
+++ b/arch/loongarch/include/asm/suspend.h
@@ -0,0 +1,10 @@
+/* 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

diff --git a/arch/loongarch/power/suspend.c b/arch/loongarch/power/suspend.c
index 5e19733..166d9e0 100644 (file)
--- a/arch/loongarch/power/suspend.c
+++ b/arch/loongarch/power/suspend.c
@@ -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;
 }