linux-kernel - Re: [PATCH v8 9/9] gpio: madera: Support Cirrus Logic Madera class codecs

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Date:   Mon, 26 Feb 2018 16:16:54 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        patches@...nsource.cirrus.com,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 9/9] gpio: madera: Support Cirrus Logic Madera class codecs

On Mon, Feb 26, 2018 at 3:05 PM, Richard Fitzgerald
<rf@...nsource.cirrus.com> wrote:
> This adds support for the GPIOs on Cirrus Logic Madera class codecs.
> Any pins not used for special functions (see the pinctrl driver) can be
> used as general single-bit input or output lines. The number of available
> GPIOs varies between codecs.
>
> Note that this is part of a composite MFD for these codecs and can only
> be used with the corresponding MFD and other child drivers on those
> silicon. The GPIO block on these codecs does not exist indepedently of
> the rest of the MFD.

> +struct madera_gpio {
> +       struct madera *madera;
> +       struct gpio_chip gpio_chip;
> +};

Why do you need this? I suppose one embeds or refers to the other.

-- 
With Best Regards,
Andy Shevchenko