[PATCH v2 0/3] gpio-keys: Add support for specifying wakeup event action

[PATCH v2 0/3] gpio-keys: Add support for specifying wakeup event action

[Jeffy Chen]

On chromebook kevin, we are using gpio-keys for pen insert event. But
we only want it to wakeup the system when ejecting the pen.

So we may need to change the interrupt trigger type during suspending.

Changes in v2:
Specify wakeup event action instead of irq trigger type as Brian
suggested.

Jeffy Chen (3):
  Input: gpio-keys - add support for wakeup event action
  Input: gpio-keys - allow setting wakeup event action in DT
  arm64: dts: rockchip: Avoid wakeup when inserting the pen

 .../devicetree/bindings/input/gpio-keys.txt        |  8 +++++++
 arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts  |  2 ++
 drivers/input/keyboard/gpio_keys.c                 | 27 ++++++++++++++++++++++
 include/linux/gpio_keys.h                          |  2 ++
 include/uapi/linux/input-event-codes.h             |  9 ++++++++
 5 files changed, 48 insertions(+)

-- 
2.11.0

[PATCH v2 2/3] Input: gpio-keys - allow setting wakeup event action in DT

[Jeffy Chen]

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

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

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

[PATCH v2 3/3] arm64: dts: rockchip: Avoid wakeup when inserting the pen

[Jeffy Chen]

Add wakeup event action for Pen Insert gpio key, to avoid wakeup when
inserting the pen.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

Changes in v2:
Specify wakeup event action instead of irq trigger type as Brian
suggested.

 arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
index 191a6bcb1704..ef2de0057c5c 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
@@ -134,6 +134,8 @@
 		gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
 		linux,code = <SW_PEN_INSERTED>;
 		linux,input-type = <EV_SW>;
+		/* Wakeup only when ejecting */
+		wakeup-event-action = <EV_ACT_DEASSERTED>;
 		wakeup-source;
 	};
 };
-- 
2.11.0


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Re: [PATCH v2 0/3] gpio-keys: Add support for specifying wakeup event action

[Heiko Stübner]

Hi Jeffy,

Am Samstag, 10. Februar 2018, 12:09:04 CET schrieb Jeffy Chen:
> On chromebook kevin, we are using gpio-keys for pen insert event. But
> we only want it to wakeup the system when ejecting the pen.
> 
> So we may need to change the interrupt trigger type during suspending.
> 
> Changes in v2:
> Specify wakeup event action instead of irq trigger type as Brian
> suggested.
> 
> Jeffy Chen (3):
>   Input: gpio-keys - add support for wakeup event action
>   Input: gpio-keys - allow setting wakeup event action in DT
>   arm64: dts: rockchip: Avoid wakeup when inserting the pen

The recipient-selection for the mail thread seems to be a bit off and
I only got the cover-letter and patch 3/3.
Therefore I won't really see if and when the Input-changes get
accepted. So please ping me once that has happened so I can pick up
the rockchip dts change for it.


Thanks
Heiko
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Re: [PATCH v2 0/3] gpio-keys: Add support for specifying wakeup event action

[JeffyChen]

Hi Heiko,

Thanks for your reply :)

On 02/14/2018 09:39 PM, Heiko Stübner wrote:
> Hi Jeffy,
>
> Am Samstag, 10. Februar 2018, 12:09:04 CET schrieb Jeffy Chen:
>> On chromebook kevin, we are using gpio-keys for pen insert event. But
>> we only want it to wakeup the system when ejecting the pen.
>>
>> So we may need to change the interrupt trigger type during suspending.
>>
>> Changes in v2:
>> Specify wakeup event action instead of irq trigger type as Brian
>> suggested.
>>
>> Jeffy Chen (3):
>>    Input: gpio-keys - add support for wakeup event action
>>    Input: gpio-keys - allow setting wakeup event action in DT
>>    arm64: dts: rockchip: Avoid wakeup when inserting the pen
>
> The recipient-selection for the mail thread seems to be a bit off and
> I only got the cover-letter and patch 3/3.
> Therefore I won't really see if and when the Input-changes get
> accepted. So please ping me once that has happened so I can pick up
> the rockchip dts change for it.
oops, sorry, i'll add you to the CC list in the next version :)

>
>
> Thanks
> Heiko
>
>
>



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Re: [PATCH v2 2/3] Input: gpio-keys - allow setting wakeup event action in DT

[Rob Herring]

On Sat, Feb 10, 2018 at 07:09:06PM +0800, Jeffy Chen wrote:
> Allow specifying event actions to trigger wakeup when using the
> gpio-keys input device as a wakeup source.
> 
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
> 
> 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(+)

Reviewed-by: Rob Herring <robh@kernel.org>