linux-kernel - Re: [PATCH v2 1/3] Input: gpio-keys - add support for wakeup event action

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Message-ID: <20180213182521.GA51247@rodete-desktop-imager.corp.google.com>
Date:   Tue, 13 Feb 2018 10:25:22 -0800
From:   Brian Norris <briannorris@...omium.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        linux-kernel@...r.kernel.org, briannorris@...gle.com,
        dtor@...gle.com, dianders@...gle.com,
        Thomas Gleixner <tglx@...utronix.de>,
        Joseph Lo <josephl@...dia.com>,
        stephen lu <lumotuwe@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-input@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Arvind Yadav <arvind.yadav.cs@...il.com>
Subject: Re: [PATCH v2 1/3] Input: gpio-keys - add support for wakeup event
 action

Hi Enric,

On Tue, Feb 13, 2018 at 11:40:44AM +0100, Enric Balletbo i Serra wrote:
> On 12/02/18 23:13, Brian Norris wrote:
> > On Sat, Feb 10, 2018 at 07:09:05PM +0800, Jeffy Chen wrote:
> >> Add support for specifying event actions to trigger wakeup when using
> >> the gpio-keys input device as a wakeup source.
> >>
> >> This would allow the device to configure when to wakeup the system. For
> >> example a gpio-keys input device for pen insert, may only want to wakeup
> >> the system when ejecting the pen.
> >>
> >> Suggested-by: Brian Norris <briannorris@...omium.org>
> >> Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> >> ---
> >>
> >> Changes in v2:
> >> Specify wakeup event action instead of irq trigger type as Brian
> >> suggested.
[...]
> Not sure if you were aware but there is also some discussion related to this,
> maybe we can join the efforts?
> 
> v1: https://patchwork.kernel.org/patch/10208261/
> v2: https://patchwork.kernel.org/patch/10211147/

Thanks for the pointers. IIUC, that's talking about a different problem:
how to utilize a GPIO key in level-triggered mode. That touches similar
code, but it doesn't really have anything to do with configuring a
different wakeup trigger type.

The two patches would need to be reconciled, if they both are going to
be merged. But otherwise, I think they're perfectly fine to be separate.

Brian