Hi Jeffy, On Fri, Feb 09, 2018 at 07:55:09PM +0800, Jeffy Chen wrote: > Allow specifying a different interrupt trigger type for wakeup when > using the gpio-keys input device as a wakeup source. > > Signed-off-by: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx> > --- > > Documentation/devicetree/bindings/input/gpio-keys.txt | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/Documentation/devicetree/bindings/input/gpio-keys.txt b/Documentation/devicetree/bindings/input/gpio-keys.txt > index a94940481e55..61926cef708f 100644 > --- a/Documentation/devicetree/bindings/input/gpio-keys.txt > +++ b/Documentation/devicetree/bindings/input/gpio-keys.txt > @@ -26,6 +26,15 @@ 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-trigger-type: Specifies the interrupt trigger type for wakeup. > + The value is defined in <dt-bindings/interrupt-controller/irq.h> Do you really want to codify interrupt triggers here? It seems like most of the information about edge vs. level is already codified elsewhere, so this becomes a little redundant. And in fact, some bindings may be specifying a "gpio", not technically an interrupt (at least not directly), so it feels weird to apply IRQ_* flags to them right here. Anyway, I think he only piece you really want to describe here is, do we wake on "event asserted", "event deasserted", or both. (The "none" case would just mean you shouldn't have the "wakeup-source" property.) So maybe: wakeup-trigger-type: 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: 1: asserted 2: deasserted 3: both asserted and deasserted ? We could still make macros out of those, if we want (input/linux-event-codes.h?). And then leave it up to the driver to determine how to translate that into the appropriate edge or level triggers. Brian > + Only the following flags are supported: > + IRQ_TYPE_NONE > + IRQ_TYPE_EDGE_RISING > + IRQ_TYPE_EDGE_FALLING > + IRQ_TYPE_EDGE_BOTH > + IRQ_TYPE_LEVEL_HIGH > + IRQ_TYPE_LEVEL_LOW > - 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 > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
