Input: matrix_keypad - add support for clustered irq
This one adds support of a combined irq source for the whole matrix keypad.
This can be useful if all rows and columns of the keypad are e.g. connected
to a GPIO expander, which only has one interrupt line for all events on
every single GPIO.
Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h
index c964cd7..80352ad 100644
--- a/include/linux/input/matrix_keypad.h
+++ b/include/linux/input/matrix_keypad.h
@@ -41,6 +41,9 @@
* @col_scan_delay_us: delay, measured in microseconds, that is
* needed before we can keypad after activating column gpio
* @debounce_ms: debounce interval in milliseconds
+ * @clustered_irq: may be specified if interrupts of all row/column GPIOs
+ * are bundled to one single irq
+ * @clustered_irq_flags: flags that are needed for the clustered irq
* @active_low: gpio polarity
* @wakeup: controls whether the device should be set up as wakeup
* source
@@ -63,6 +66,9 @@
/* key debounce interval in milli-second */
unsigned int debounce_ms;
+ unsigned int clustered_irq;
+ unsigned int clustered_irq_flags;
+
bool active_low;
bool wakeup;
bool no_autorepeat;