[PATCH v3 19/20] platform/x86: Update alienware-wmi config entries

[Kurt Borja <kuurtb@gmail.com>]

Add config entries for each WMI driver managed by the alienware-wmi
module to be able to conditionally compile them.

Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
---
 drivers/platform/x86/dell/Kconfig         | 30 +++++++++++++++++++----
 drivers/platform/x86/dell/Makefile        |  4 +--
 drivers/platform/x86/dell/alienware-wmi.h | 23 +++++++++++++++++
 3 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/drivers/platform/x86/dell/Kconfig b/drivers/platform/x86/dell/Kconfig
index d09060aedd3f..f8a0dffcaab7 100644
--- a/drivers/platform/x86/dell/Kconfig
+++ b/drivers/platform/x86/dell/Kconfig
@@ -18,15 +18,35 @@ config ALIENWARE_WMI
 	tristate "Alienware Special feature control"
 	default m
 	depends on ACPI
+	depends on ACPI_WMI
+	depends on DMI
 	depends on LEDS_CLASS
 	depends on NEW_LEDS
-	depends on ACPI_WMI
+	help
+	 This is a driver for controlling Alienware WMI driven features.
+
+	 On legacy devices, it exposes an interface for controlling the AlienFX
+	 zones on Alienware machines that don't contain a dedicated
+	 AlienFX USB MCU such as the X51 and X51-R2.
+
+	 On newer devices, it exposes the AWCC thermal control interface through
+	 known Kernel APIs.
+
+config ALIENWARE_WMI_LEGACY
+	bool "Alienware Legacy WMI device driver"
+	default y
+	depends on ALIENWARE_WMI
+	help
+	 Legacy Alienware WMI driver with AlienFX LED control capabilities.
+
+config ALIENWARE_WMI_WMAX
+	bool "Alienware WMAX WMI device driver"
+	default y
+	depends on ALIENWARE_WMI
 	select ACPI_PLATFORM_PROFILE
 	help
-	 This is a driver for controlling Alienware BIOS driven
-	 features.  It exposes an interface for controlling the AlienFX
-	 zones on Alienware machines that don't contain a dedicated AlienFX
-	 USB MCU such as the X51 and X51-R2.
+	 Alienware WMI driver with AlienFX LED, HDMI, amplifier, deep sleep and
+	 AWCC thermal control capabilities.
 
 config DCDBAS
 	tristate "Dell Systems Management Base Driver"
diff --git a/drivers/platform/x86/dell/Makefile b/drivers/platform/x86/dell/Makefile
index d5718ef34c48..8ac9a933c770 100644
--- a/drivers/platform/x86/dell/Makefile
+++ b/drivers/platform/x86/dell/Makefile
@@ -6,8 +6,8 @@
 
 obj-$(CONFIG_ALIENWARE_WMI)			+= alienware-wmi.o
 alienware-wmi-objs				:= alienware-wmi-base.o
-alienware-wmi-y					+= alienware-wmi-legacy.o
-alienware-wmi-y					+= alienware-wmi-wmax.o
+alienware-wmi-$(CONFIG_ALIENWARE_WMI_LEGACY)	+= alienware-wmi-legacy.o
+alienware-wmi-$(CONFIG_ALIENWARE_WMI_WMAX)	+= alienware-wmi-wmax.o
 obj-$(CONFIG_DCDBAS)				+= dcdbas.o
 obj-$(CONFIG_DELL_LAPTOP)			+= dell-laptop.o
 obj-$(CONFIG_DELL_RBTN)				+= dell-rbtn.o
diff --git a/drivers/platform/x86/dell/alienware-wmi.h b/drivers/platform/x86/dell/alienware-wmi.h
index e4b75b1acd10..a810767a0eb7 100644
--- a/drivers/platform/x86/dell/alienware-wmi.h
+++ b/drivers/platform/x86/dell/alienware-wmi.h
@@ -72,10 +72,33 @@ int alienware_wmi_command(struct wmi_device *wdev, u32 method_id,
 int alienware_alienfx_setup(struct alienfx_platdata *pdata);
 void alienware_alienfx_exit(struct wmi_device *wdev);
 
+#if IS_ENABLED(CONFIG_ALIENWARE_WMI_LEGACY)
 int __init alienware_legacy_wmi_init(void);
 void __exit alienware_legacy_wmi_exit(void);
+#else
+static inline int alienware_legacy_wmi_init(void)
+{
+	return -ENODEV;
+}
+
+static inline void alienware_legacy_wmi_exit(void)
+{
+}
+#endif
 
+#if IS_ENABLED(CONFIG_ALIENWARE_WMI_WMAX)
 int __init alienware_wmax_wmi_init(void);
 void __exit alienware_wmax_wmi_exit(void);
+#else
+static inline int alienware_wmax_wmi_init(void)
+{
+	return -ENODEV;
+}
+
+
+static inline void alienware_wmax_wmi_exit(void)
+{
+}
+#endif
 
 #endif
-- 
2.47.1