Input: atmel_captouch - add dependence on i2c

The newly added Atmal captouch driver fails to build when CONFIG_I2C
is disabled:

drivers/input/misc/atmel_captouch.c: In function 'atmel_read':
drivers/input/misc/atmel_captouch.c:115:8: error: implicit declaration of function 'i2c_transfer' [-Werror=implicit-function-declaration]

This adds an explicit Kconfig dependency to prevent the broken
configuration.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: b06d43f7a3db ("Input: add Atmel Captouch Button driver")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 9c3dfe79d4d475433d2d3e126140793dd09a8fde..27d6da0e354a51f9a2bd3c4cca1f9930612596dc 100644 (file)
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -85,6 +85,7 @@ config INPUT_ARIZONA_HAPTICS
 config INPUT_ATMEL_CAPTOUCH
        tristate "Atmel Capacitive Touch Button Driver"
        depends on OF || COMPILE_TEST
+       depends on I2C
        help
          Say Y here if an Atmel Capacitive Touch Button device which
          implements "captouch" protocol is connected to I2C bus. Typically