Input: gpio_keys - add support for EV_ABS

With this patch you can setup a group of GPIOs representing a specific
position on an EV_ABS axis.

Signed-off-by: Alexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/linux/gpio_keys.h b/include/linux/gpio_keys.h
index dd1a56fbe924..3204edfe6b19 100644
--- a/include/linux/gpio_keys.h
+++ b/include/linux/gpio_keys.h
@@ -3,14 +3,15 @@
 
 struct gpio_keys_button {
         /* Configuration parameters */
-        int code;               /* input event code (KEY_*, SW_*) */
+        unsigned int code;      /* input event code (KEY_*, SW_*) */
         int gpio;
         int active_low;
-        char *desc;
-        int type;               /* input event type (EV_KEY, EV_SW) */
+        const char *desc;
+        unsigned int type;      /* input event type (EV_KEY, EV_SW, EV_ABS) */
         int wakeup;             /* configure the button as a wake-up source */
         int debounce_interval;  /* debounce ticks interval in msecs */
         bool can_disable;
+        int value;              /* axis value for EV_ABS */
 };
 
 struct gpio_keys_platform_data {