platform/x86: Add Asus TF103C dock driver

Add a driver for the keyboard, touchpad and USB port of
the keyboard dock for the Asus TF103C 2-in-1 tablet.

This keyboard dock has its own I2C attached embedded controller
and the keyboard and touchpad are also connected over I2C,
instead of using the usual USB connection. This means that the
keyboard dock requires this special driver to function.

Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Cc: Ion Agorria <ion@agorria.com>
Cc: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211226141849.156407-1-hdegoede@redhat.com

MAINTAINERS

@@ -2988,6 +2988,13 @@ W:	http://acpi4asus.sf.net
 F:	drivers/platform/x86/asus*.c
 F:	drivers/platform/x86/eeepc*.c
 
+ASUS TF103C DOCK DRIVER
+M:	Hans de Goede <hdegoede@redhat.com>
+L:	platform-driver-x86@vger.kernel.org
+S:	Maintained
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
+F:	drivers/platform/x86/asus-tf103c-dock.c
+
 ASUS WIRELESS RADIO CONTROL DRIVER
 M:	João Paulo Rechi Vita <jprvita@gmail.com>
 L:	platform-driver-x86@vger.kernel.org

drivers/platform/x86/Kconfig

@@ -309,6 +309,25 @@ config ASUS_NB_WMI
 	  If you have an ACPI-WMI compatible Asus Notebook, say Y or M
 	  here.
 
+config ASUS_TF103C_DOCK
+	tristate "Asus TF103C 2-in-1 keyboard dock"
+	depends on ACPI
+	depends on I2C
+	depends on INPUT
+	depends on HID
+	depends on GPIOLIB
+	help
+	  This is a driver for the keyboard, touchpad and USB port of the
+	  keyboard dock for the Asus TF103C 2-in-1 tablet.
+
+	  This keyboard dock has its own I2C attached embedded controller
+	  and the keyboard and touchpad are also connected over I2C,
+	  instead of using the usual USB connection. This means that the
+	  keyboard dock requires this special driver to function.
+
+	  If you have an Asus TF103C tablet say Y or M here, for a generic x86
+	  distro config say M here.
+
 config MERAKI_MX100
 	tristate "Cisco Meraki MX100 Platform Driver"
 	depends on GPIOLIB

drivers/platform/x86/Makefile

@@ -36,6 +36,7 @@ obj-$(CONFIG_ASUS_LAPTOP)	+= asus-laptop.o
 obj-$(CONFIG_ASUS_WIRELESS)	+= asus-wireless.o
 obj-$(CONFIG_ASUS_WMI)		+= asus-wmi.o
 obj-$(CONFIG_ASUS_NB_WMI)	+= asus-nb-wmi.o
+obj-$(CONFIG_ASUS_TF103C_DOCK)	+= asus-tf103c-dock.o
 obj-$(CONFIG_EEEPC_LAPTOP)	+= eeepc-laptop.o
 obj-$(CONFIG_EEEPC_WMI)		+= eeepc-wmi.o