linux-kernel - Re: [PATCH 2/2] Input: pm8941-pwrkey: Introduce reboot mode support

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Date:   Mon, 29 May 2017 21:47:11 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     Rob Herring <robh@...nel.org>,
        John Stultz <john.stultz@...aro.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, Sebastian Reichel <sre@...nel.org>,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH 2/2] Input: pm8941-pwrkey: Introduce reboot mode support

On Mon 29 May 19:53 PDT 2017, Dmitry Torokhov wrote:

> On Fri, May 26, 2017 at 11:51:30PM -0700, Bjorn Andersson wrote:
> > In some Qualcomm platforms the magic for informing LK which mode to
> > reboot into is stored in the PON_SOFT_RB_SPARE register. Register with
> > the reboot mode helpers to expose this to the user.
> 
> Hmm, is the power key driver the best place to have this? WHy isn't this
> a driver in its own right?
> 

The functionality is part of the "PON" block in the Qualcomm PMICs,
other functionality from this block relates to configuration and
handling related to power-key and reset-key.

Several of these properties are intermingled, so I do believe it's best
to handle them in a single driver; that said, it might no longer be
correct to name the driver "pwrkey" or that it is a "misc input" driver.

Regards,
Bjorn