Input: add driver for Fujitsu application buttons

This driver supports the application buttons on some Fujitsu Lifebook
laptops.  It is based on the earlier apanel driver done by Jochen Eisenger,
but with many changes.  The original driver used ioctl's and a separate
user space program (see http://apanel.sourceforge.net).  This driver hooks
into the input subsystem so that the normal keys act as expected without a
daemon.  In addition to buttons, the Mail Led is handled via LEDs class
device.

The driver now supports redefinable keymaps and no longer has to have a DMI
table for all Fujitsu laptops.

I thought about mixing this driver should be integrated into the Fujitsu
laptop extras driver that handles backlight, but rejected the idea because
it wasn't clear if all the Fujitsu laptops supported both.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/misc/Kconfig

@@ -40,6 +40,20 @@ config INPUT_M68K_BEEP
 	tristate "M68k Beeper support"
 	depends on M68K
 
+config INPUT_APANEL
+	tristate "Fujitsu Lifebook Application Panel buttons"
+	depends on X86
+	select I2C_I801
+	select INPUT_POLLDEV
+	select CHECK_SIGNATURE
+	help
+	 Say Y here for support of the Application Panel buttons, used on
+	 Fujitsu Lifebook. These are attached to the mainboard through
+	 an SMBus interface managed by the I2C Intel ICH (i801) driver.
+
+	 To compile this driver as a module, choose M here: the module will
+	 be called apanel.
+
 config INPUT_IXP4XX_BEEPER
 	tristate "IXP4XX Beeper support"
 	depends on ARCH_IXP4XX

drivers/input/misc/Makefile

@@ -18,3 +18,4 @@ obj-$(CONFIG_INPUT_POWERMATE)		+= powermate.o
 obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o
 obj-$(CONFIG_HP_SDC_RTC)		+= hp_sdc_rtc.o
 obj-$(CONFIG_INPUT_UINPUT)		+= uinput.o
+obj-$(CONFIG_INPUT_APANEL)		+= apanel.o