Input: synaptics-rmi4 - add I2C transport driver

Add the transport driver for devices using RMI4 over I2C.

Signed-off-by: Andrew Duggan <[email protected]>
Signed-off-by: Christopher Heiny <[email protected]>
Tested-by: Benjamin Tissoires <[email protected]>
Tested-by: Linus Walleij <[email protected]>
Tested-by: Bjorn Andersson <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: aduggan-syna

drivers/input/rmi4/Kconfig

@@ -8,3 +8,12 @@ config RMI4_CORE
 	  required for all RMI4 device support.
 
 	  If unsure, say Y.
+
+config RMI4_I2C
+	tristate "RMI4 I2C Support"
+	depends on RMI4_CORE && I2C
+	help
+	  Say Y here if you want to support RMI4 devices connected to an I2C
+	  bus.
+
+	  If unsure, say Y.

drivers/input/rmi4/Makefile

@@ -1,2 +1,5 @@
 obj-$(CONFIG_RMI4_CORE) += rmi_core.o
 rmi_core-y := rmi_bus.o rmi_driver.o rmi_f01.o
+
+# Transports
+obj-$(CONFIG_RMI4_I2C) += rmi_i2c.o