Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android

[firefly-linux-kernel-4.4.55.git] / arch / arm64 / include / asm / acpi.h

diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index caafd63b8092d8102401112d811b1055f4cc3524..aee323b13802ad143e9774d2076a4b1c63731ece 100644 (file)
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -87,9 +87,26 @@ void __init acpi_init_cpus(void);
 static inline void acpi_init_cpus(void) { }
 #endif /* CONFIG_ACPI */
 
+#ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL
+bool acpi_parking_protocol_valid(int cpu);
+void __init
+acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor);
+#else
+static inline bool acpi_parking_protocol_valid(int cpu) { return false; }
+static inline void
+acpi_set_mailbox_entry(int cpu, struct acpi_madt_generic_interrupt *processor)
+{}
+#endif
+
 static inline const char *acpi_get_enable_method(int cpu)
 {
-       return acpi_psci_present() ? "psci" : NULL;
+       if (acpi_psci_present())
+               return "psci";
+
+       if (acpi_parking_protocol_valid(cpu))
+               return "parking-protocol";
+
+       return NULL;
 }
 
 #ifdef CONFIG_ACPI_APEI