Input: add support for WM97xx familty touchscreens

Add support for the touchscreen controllers provided by Wolfson
Microelectronics WM97xx series chips in both polled and streaming
modes.

These drivers have been maintained out of tree since 2003. During
that time the driver the primary maintainer was Liam Girdwood and
a number of people have made contributions including Dmitry Baryshkov,
Stanley Cai, Rodolfo Giometti, Russell King, Marc Kleine-Budde,
Ian Molton, Vincent Sanders, Andrew Zabolotny, Graeme Gregory,
Mike Arthur and myself. Apologies to anyone I have omitted.

Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 90e8e92dfe47..a95a87cd1d59 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -185,6 +185,20 @@ config TOUCHSCREEN_UCB1400
           To compile this driver as a module, choose M here: the
           module will be called ucb1400_ts.
 
+config TOUCHSCREEN_WM97XX
+        tristate "Support for WM97xx AC97 touchscreen controllers"
+        depends on AC97_BUS
+        help
+          Say Y here if you have a Wolfson Microelectronics WM97xx
+          touchscreen connected to your system. Note that this option
+          only enables core driver, you will also need to select
+          support for appropriate chip below.
+
+          If unsure, say N.
+
+          To compile this driver as a module, choose M here: the
+          module will be called wm97xx-ts.
+
 config TOUCHSCREEN_USB_COMPOSITE
         tristate "USB Touchscreen Driver"
         depends on USB_ARCH_HAS_HCD