linux-kernel - Re: [PATCH 0/4] New Qualcomm PMIC pin controller drivers

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Message-ID: <CAJAp7OgR7xc=LSf9tj+XQY1Nk=dQxCxTZ6HBEdf0NsriDZF85g@mail.gmail.com>
Date:	Sat, 12 Jul 2014 16:51:47 -0700
From:	Bjorn Andersson <bjorn@...o.se>
To:	"Ivan T. Ivanov" <iivanov@...sol.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Bjorn Andersson <Bjorn.Andersson@...ymobile.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Grant Likely <grant.likely@...aro.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH 0/4] New Qualcomm PMIC pin controller drivers

On Thu, Jul 10, 2014 at 6:39 AM, Ivan T. Ivanov <iivanov@...sol.com> wrote:
> On Wed, 2014-07-09 at 07:02 -0700, Bjorn Andersson wrote:
[..]
>> Correct Ivan; we do however share the same issues related to how to do
>> interrupt handling,
>
> Yep, but do we actually need to do interrupt handling in driver?
> Interrupts are handled by parent device. GPIO client drivers could
> use interrupt-controller registered by core driver?
>

Among other things we have the volume and camera keys hooked to these
pins, using the gpio-keys driver; so that needs to be able to convert
a gpio to an irq.
But I don't believe we should turn this driver into an
interrupt-controller; as that wouldn't add any value...

Regards,
Bjorn
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