linux-kernel - Re: [PATCH v2 4/4] gpio: aspeed: Add open-source and open-drain support

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Message-ID: <CACRpkdb2ABf5ZttSA78dRKLB7L3y2g4W5-Ef932AiG__V21uvw@mail.gmail.com>
Date:   Mon, 24 Apr 2017 14:52:21 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Andrew Jeffery <andrew@...id.au>
Cc:     Rob Herring <robh+dt@...nel.org>, Joel Stanley <joel@....id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>
Subject: Re: [PATCH v2 4/4] gpio: aspeed: Add open-source and open-drain support

On Fri, Apr 7, 2017 at 2:59 PM, Andrew Jeffery <andrew@...id.au> wrote:

> As per the datasheet, manage the IO and value states to implement
> open-source/open-drain, but do this by falling back to gpiolib's
> emulation.
>
> This commit simply makes the behaviour explicit for clarity, rather than
> relying on the implicit return of -ENOTSUPP to trigger the emulation.
>
> Signed-off-by: Andrew Jeffery <andrew@...id.au>

Patch applied.

Yours,
Linus Walleij