HID: Driver for Lenovo Keyboard with Trackpoint

This driver for the "Lenovo ThinkPad USB Keyboard with Trackpoint" supports
setting various device attributes, controlling mute and microphone mute
LEDs and enables use of the microphone mute key.
Signed-off-by: Bernhard Seibold <mail@bernhard-seibold.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Documentation/ABI/testing/sysfs-driver-hid-lenovo-tpkbd

+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/press_to_select
+Date:		July 2011
+Contact:	linux-input@vger.kernel.org
+Description:	This controls if mouse clicks should be generated if the trackpoint is quickly pressed. How fast this press has to be
+		is being controlled by press_speed.
+		Values are 0 or 1.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/dragging
+Date:		July 2011
+Contact:	linux-input@vger.kernel.org
+Description:	If this setting is enabled, it is possible to do dragging by pressing the trackpoint. This requires press_to_select to be enabled.
+		Values are 0 or 1.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/release_to_select
+Date:		July 2011
+Contact:	linux-input@vger.kernel.org
+Description:	For details regarding this setting please refer to http://www.pc.ibm.com/ww/healthycomputing/trkpntb.html
+		Values are 0 or 1.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/select_right
+Date:		July 2011
+Contact:	linux-input@vger.kernel.org
+Description:	This setting controls if the mouse click events generated by pressing the trackpoint (if press_to_select is enabled) generate
+		a left or right mouse button click.
+		Values are 0 or 1.
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/sensitivity
+Date:		July 2011
+Contact:	linux-input@vger.kernel.org
+Description:	This file contains the trackpoint sensitivity.
+		Values are decimal integers from 1 (lowest sensitivity) to 255 (highest sensitivity).
+
+What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/press_speed
+Date:		July 2011
+Contact:	linux-input@vger.kernel.org
+Description:	This setting controls how fast the trackpoint needs to be pressed to generate a mouse click if press_to_select is enabled.
+		Values are decimal integers from 1 (slowest) to 255 (fastest).
+

drivers/hid/Kconfig

@@ -268,6 +268,18 @@ config HID_LCPOWER
 	---help---
 	Support for LC-Power RC1000MCE RF remote control.
 
+config HID_LENOVO_TPKBD
+	tristate "Lenovo ThinkPad USB Keyboard with TrackPoint"
+	depends on USB_HID
+	select LEDS_CLASS
+	---help---
+	Support for the Lenovo ThinkPad USB Keyboard with TrackPoint.
+
+	Say Y here if you have a Lenovo ThinkPad USB Keyboard with TrackPoint
+	and would like to use device-specific features like changing the
+	sensitivity of the trackpoint, using the microphone mute button or
+	controlling the mute and microphone mute LEDs.
+
 config HID_LOGITECH
 	tristate "Logitech devices" if EXPERT
 	depends on USB_HID

drivers/hid/Makefile

@@ -54,6 +54,7 @@ obj-$(CONFIG_HID_KENSINGTON)	+= hid-kensington.o
 obj-$(CONFIG_HID_KEYTOUCH)	+= hid-keytouch.o
 obj-$(CONFIG_HID_KYE)		+= hid-kye.o
 obj-$(CONFIG_HID_LCPOWER)       += hid-lcpower.o
+obj-$(CONFIG_HID_LENOVO_TPKBD)	+= hid-lenovo-tpkbd.o
 obj-$(CONFIG_HID_LOGITECH)	+= hid-logitech.o
 obj-$(CONFIG_HID_LOGITECH_DJ)	+= hid-logitech-dj.o
 obj-$(CONFIG_HID_MAGICMOUSE)    += hid-magicmouse.o

drivers/hid/hid-core.c

@@ -1544,6 +1544,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
+ 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },

drivers/hid/hid-ids.h

@@ -473,6 +473,9 @@
 #define USB_DEVICE_ID_LD_HYBRID		0x2090
 #define USB_DEVICE_ID_LD_HEATCONTROL	0x20A0
 
+#define USB_VENDOR_ID_LENOVO		0x17ef
+#define USB_DEVICE_ID_LENOVO_TPKBD	0x6009
+
 #define USB_VENDOR_ID_LG		0x1fd2
 #define USB_DEVICE_ID_LG_MULTITOUCH	0x0064