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Date:   Mon, 14 Jan 2019 19:38:32 +0100
From:   Jonathan =?utf-8?Q?Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>
To:     Linus Walleij <linus.walleij@linaro.org>
Cc:     Jonathan =?utf-8?Q?Neusch=C3=A4fer?= <j.neuschaefer@gmx.net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] gpio: hlwd: Add basic IRQ support
Message-ID: <20190114183832.GC22334@latitude>
References: <20190113135844.13109-1-j.neuschaefer@gmx.net>
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Hi,

On Mon, Jan 14, 2019 at 11:20:49AM +0100, Linus Walleij wrote:
> Hi Jonathan,
>=20
> thanks for the patch! It is looking very good.
> Some minor comments:
>=20
> On Sun, Jan 13, 2019 at 3:00 PM Jonathan Neusch=C3=A4fer
[...]
> > +       spin_lock_irqsave(&hlwd->gpioc.bgpio_lock, flags);
> > +       pending =3D hlwd->gpioc.read_reg(hlwd->regs + HW_GPIOB_INTFLAG);
> > +       pending &=3D hlwd->gpioc.read_reg(hlwd->regs + HW_GPIOB_INTMASK=
);
>=20
> Please just access IO directly instead through the helper.
> ioread32be()/iowrite32be() I suppose?

Ok.  Yes, 32-bit big endian is correct.

[...]
> > +       hlwd->irqc.name =3D "GPIO";
>=20
> What about using something device-unique?
>=20
> hlwd->irqc.name =3D dev_name(&pdev->dev);
>=20
> for example?

Good idea, especially considering that the Wii U (the successor of the
Wii) has two of these GPIO controllers.

> otherwise it looks fine!

Cool, I'll send a v2 with these two points addressed.


Thanks,
Jonathan Neusch=C3=A4fer

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