input: Add ChromeOS EC keyboard driver
Use the key-matrix layer to interpret key scan information from the EC
and inject input based on the FDT-supplied key map. This driver registers
itself with the ChromeOS EC driver to perform communications.
The matrix-keypad FDT binding is used with a small addition to control
ghosting.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Luigi Semenzato <semenzato@chromium.org>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index ac05006..6a195d5 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -628,4 +628,16 @@
To compile this driver as a module, choose M here: the
module will be called w90p910_keypad.
+config KEYBOARD_CROS_EC
+ tristate "ChromeOS EC keyboard"
+ select INPUT_MATRIXKMAP
+ depends on MFD_CROS_EC
+ help
+ Say Y here to enable the matrix keyboard used by ChromeOS devices
+ and implemented on the ChromeOS EC. You must enable one bus option
+ (MFD_CROS_EC_I2C or MFD_CROS_EC_SPI) to use this.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cros_ec_keyb.
+
endif
