Input: cyttsp4 - SPI driver for Cypress TMA4XX touchscreen devices

Cypress TrueTouch(tm) Standard Product controllers,
Generation4 devices, SPI adapter module.

This driver adds communication support with TTSP controller
using SPI bus.

Signed-off-by: Ferruh Yigit <fery@cypress.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 1645e8e..2d70089 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -188,6 +188,15 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called cyttsp4_i2c.
 
+config TOUCHSCREEN_CYTTSP4_SPI
+	tristate "support SPI bus connection"
+	depends on TOUCHSCREEN_CYTTSP4_CORE && SPI_MASTER
+	help
+	  Say Y here if the touchscreen is connected via SPI bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cyttsp4_spi.
+
 config TOUCHSCREEN_DA9034
 	tristate "Touchscreen support for Dialog Semiconductor DA9034"
 	depends on PMIC_DA903X