ACPI: Move AMBA bus scan handling into arm64 specific directory

Commit fcea0ccf ("ACPI: bus: Consolidate all arm specific
initialisation into acpi_arm_init()") moved all of the ARM-specific
initialization into acpi_arm_init(). However, acpi_amba.c being outside
of drivers/acpi/arm64 got ignored and hence acpi_amba_init() was not
moved into acpi_arm_init().

Move the AMBA platform bus support into arm64 specific folder and make
acpi_amba_init() part of acpi_arm_init().
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/Makefile

@@ -50,7 +50,6 @@ acpi-$(CONFIG_PCI)		+= acpi_lpss.o
 acpi-y				+= acpi_apd.o
 acpi-y				+= acpi_platform.o
 acpi-y				+= acpi_pnp.o
-acpi-$(CONFIG_ARM_AMBA)	+= acpi_amba.o
 acpi-y				+= power.o
 acpi-y				+= event.o
 acpi-y				+= evged.o

drivers/acpi/arm64/Makefile

@@ -3,4 +3,5 @@ obj-$(CONFIG_ACPI_AGDI) 	+= agdi.o
 obj-$(CONFIG_ACPI_IORT) 	+= iort.o
 obj-$(CONFIG_ACPI_GTDT) 	+= gtdt.o
 obj-$(CONFIG_ACPI_APMT) 	+= apmt.o
+obj-$(CONFIG_ARM_AMBA)		+= amba.o
 obj-y				+= dma.o init.o

drivers/acpi/acpi_amba.c → drivers/acpi/arm64/amba.c

@@ -17,7 +17,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 
-#include "internal.h"
+#include "init.h"
 
 static const struct acpi_device_id amba_id_list[] = {
 	{"ARMH0061", 0}, /* PL061 GPIO Device */

drivers/acpi/arm64/init.c

@@ -10,4 +10,6 @@ void __init acpi_arm_init(void)
 		acpi_apmt_init();
 	if (IS_ENABLED(CONFIG_ACPI_IORT))
 		acpi_iort_init();
+	if (IS_ENABLED(CONFIG_ARM_AMBA))
+		acpi_amba_init();
 }

drivers/acpi/arm64/init.h

@@ -4,3 +4,4 @@
 void __init acpi_agdi_init(void);
 void __init acpi_apmt_init(void);
 void __init acpi_iort_init(void);
+void __init acpi_amba_init(void);

drivers/acpi/internal.h

@@ -28,11 +28,6 @@ void acpi_processor_init(void);
 void acpi_platform_init(void);
 void acpi_pnp_init(void);
 void acpi_int340x_thermal_init(void);
-#ifdef CONFIG_ARM_AMBA
-void acpi_amba_init(void);
-#else
-static inline void acpi_amba_init(void) {}
-#endif
 int acpi_sysfs_init(void);
 void acpi_gpe_apply_masked_gpes(void);
 void acpi_container_init(void);

drivers/acpi/scan.c

@@ -2615,7 +2615,6 @@ void __init acpi_scan_init(void)
 	acpi_watchdog_init();
 	acpi_pnp_init();
 	acpi_int340x_thermal_init();
-	acpi_amba_init();
 	acpi_init_lpit();
 
 	acpi_scan_add_handler(&generic_device_handler);