linux-kernel - [PATCH v3 2/3] Input: gpio-keys - allow setting wakeup event action in DT

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Date:   Fri,  2 Mar 2018 11:51:01 +0800
From:   Jeffy Chen <jeffy.chen@...k-chips.com>
To:     linux-kernel@...r.kernel.org
Cc:     briannorris@...gle.com, heiko@...ech.de, dtor@...gle.com,
        dianders@...gle.com, Jeffy Chen <jeffy.chen@...k-chips.com>,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org, Mark Rutland <mark.rutland@....com>
Subject: [PATCH v3 2/3] Input: gpio-keys - allow setting wakeup event action in DT

Allow specifying event actions to trigger wakeup when using the
gpio-keys input device as a wakeup source.

Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
---

Changes in v3: None
Changes in v2:
Specify wakeup event action instead of irq trigger type as Brian
suggested.

 Documentation/devicetree/bindings/input/gpio-keys.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/gpio-keys.txt b/Documentation/devicetree/bindings/input/gpio-keys.txt
index a94940481e55..996ce84352cb 100644
--- a/Documentation/devicetree/bindings/input/gpio-keys.txt
+++ b/Documentation/devicetree/bindings/input/gpio-keys.txt
@@ -26,6 +26,14 @@ Optional subnode-properties:
 	  If not specified defaults to 5.
 	- wakeup-source: Boolean, button can wake-up the system.
 			 (Legacy property supported: "gpio-key,wakeup")
+	- wakeup-event-action: Specifies whether the key should wake the
+	  system when asserted, when deasserted, or both. This property is
+	  only valid for keys that wake up the system (e.g., when the
+	  "wakeup-source" property is also provided).
+	  Supported values are defined in linux-event-codes.h:
+		EV_ACT_ASSERTED		- asserted
+		EV_ACT_DEASSERTED	- deasserted
+		EV_ACT_ANY		- both asserted and deasserted
 	- linux,can-disable: Boolean, indicates that button is connected
 	  to dedicated (not shared) interrupt which can be disabled to
 	  suppress events from the button.
-- 
2.11.0