linux-kernel - Re: [PATCH v2 03/10] mfd: wcd9335: add wcd irq support

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Date:   Wed, 1 Aug 2018 16:17:45 -0600
From:   Rob Herring <robh@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     Lee Jones <lee.jones@...aro.org>, Mark Brown <broonie@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Takashi Iwai <tiwai@...e.com>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Vinod <vkoul@...nel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>
Subject: Re: [PATCH v2 03/10] mfd: wcd9335: add wcd irq support

On Wed, Aug 1, 2018 at 2:57 AM Srinivas Kandagatla
<srinivas.kandagatla@...aro.org> wrote:
>
> Thanks for the review,
>
> On 31/07/18 21:45, Rob Herring wrote:
> > On Fri, Jul 27, 2018 at 01:17:59PM +0100, Srinivas Kandagatla wrote:
> >> WCD9335 supports two lines of irqs INTR1 and INTR2.
> >> Multiple interrupts are muxed via these lines.
> >> INTR1 consists of all possible interrupt sources like:
> >> Ear OCP, HPH OCP, MBHC, MAD, VBAT, and SVA
> >> INTR2 is a subset of first interrupt sources like MAD, VBAT, and SVA
> >>
> >> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> >> ---
> >>   drivers/mfd/Makefile                |   2 +-
> >>   drivers/mfd/wcd9335-core.c          |   9 ++
> >>   drivers/mfd/wcd9335-irq.c           | 172 ++++++++++++++++++++++++++++++++++++
> >>   include/dt-bindings/mfd/wcd9335.h   |  43 +++++++++
> >
> > I'm confused why these are defined here. The binding for the wc9335 is
> > not an interrupt-controller.
>
> I can move this defines to include/linux/mfd/wcd9335/wcd9335.h as there
> are no active users for this, but I  was hoping that these can be used
> in DT in future.
>
> WCD9335 is an interrupt controller too. It muxes multiple interrupts via
> a gpio line interrupt.
>
> I did mention this in the bindings.

Then the header belongs in the binding patch.

I don't recall child nodes being defined though and you don't need to
be a interrupt-controller (in DT) without them.

Rob