platform/x86/amd/hsmp: Create hsmp/ directory

This is in preparation to splitting ACPI and platform device drivers.
Create and move hsmp specific code into its own directory,
no logical changes.

Signed-off-by: Suma Hegde <suma.hegde@amd.com>
Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20241021111428.2676884-1-suma.hegde@amd.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

MAINTAINERS

@@ -1081,7 +1081,7 @@ S:	Maintained
 F:	Documentation/arch/x86/amd_hsmp.rst
 F:	arch/x86/include/asm/amd_hsmp.h
 F:	arch/x86/include/uapi/asm/amd_hsmp.h
-F:	drivers/platform/x86/amd/hsmp.c
+F:	drivers/platform/x86/amd/hsmp/
 
 AMD IOMMU (AMD-VI)
 M:	Joerg Roedel <joro@8bytes.org>

drivers/platform/x86/amd/Kconfig

@@ -3,22 +3,10 @@
 # AMD x86 Platform Specific Drivers
 #
 
+source "drivers/platform/x86/amd/hsmp/Kconfig"
 source "drivers/platform/x86/amd/pmf/Kconfig"
 source "drivers/platform/x86/amd/pmc/Kconfig"
 
-config AMD_HSMP
-	tristate "AMD HSMP Driver"
-	depends on AMD_NB && X86_64 && ACPI
-	help
-	  The driver provides a way for user space tools to monitor and manage
-	  system management functionality on EPYC server CPUs from AMD.
-
-	  Host System Management Port (HSMP) interface is a mailbox interface
-	  between the x86 core and the System Management Unit (SMU) firmware.
-
-	  If you choose to compile this driver as a module the module will be
-	  called amd_hsmp.
-
 config AMD_WBRF
 	bool "AMD Wifi RF Band mitigations (WBRF)"
 	depends on ACPI

drivers/platform/x86/amd/Makefile

@@ -5,7 +5,6 @@
 #
 
 obj-$(CONFIG_AMD_PMC)		+= pmc/
-amd_hsmp-y			:= hsmp.o
-obj-$(CONFIG_AMD_HSMP)		+= amd_hsmp.o
+obj-y				+= hsmp/
 obj-$(CONFIG_AMD_PMF)		+= pmf/
 obj-$(CONFIG_AMD_WBRF)		+= wbrf.o

drivers/platform/x86/amd/hsmp/Kconfig

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# AMD HSMP Driver
+#
+
+config AMD_HSMP
+	tristate "AMD HSMP Driver"
+	depends on AMD_NB && X86_64 && ACPI
+	help
+	  The driver provides a way for user space tools to monitor and manage
+	  system management functionality on EPYC server CPUs from AMD.
+
+	  Host System Management Port (HSMP) interface is a mailbox interface
+	  between the x86 core and the System Management Unit (SMU) firmware.
+
+	  If you choose to compile this driver as a module the module will be
+	  called amd_hsmp.

drivers/platform/x86/amd/hsmp/Makefile

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for drivers/platform/x86/amd/hsmp
+# AMD HSMP Driver
+#
+
+obj-$(CONFIG_AMD_HSMP)		+= amd_hsmp.o
+amd_hsmp-objs			:= hsmp.o