Input - arizona-haptics: Add driver haptics module on Arizona CODECs

The Arizona CODECs contain a haptics module providing vibration feedback
support. Implement basic support for this, providing simple start/stop and
signal magnitude control.

Since the output path for haptics is routed through the CODEC audio routing
it is modelled as a signal generator within ASoC, the haptics driver calls
DAPM to start and stop the output drivers. An appropriate output path must
be configured via ALSA to connect the haptics source to the correct output.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 7c0f1ecfdd7a..104a7c3153c0 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -72,6 +72,16 @@ config INPUT_AD714X_SPI
           To compile this driver as a module, choose M here: the
           module will be called ad714x-spi.
 
+config INPUT_ARIZONA_HAPTICS
+        tristate "Arizona haptics support"
+        depends on MFD_ARIZONA && SND_SOC
+        select INPUT_FF_MEMLESS
+        help
+          Say Y to enable support for the haptics module in Arizona CODECs.
+
+          To compile this driver as a module, choose M here: the
+          module will be called arizona-haptics.
+
 config INPUT_BMA150
         tristate "BMA150/SMB380 acceleration sensor support"
         depends on I2C