linux-kernel - Re: [PATCH 2/3] pinctrl: intel: Allow custom GPIO base for pad groups

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Date:   Wed, 29 Nov 2017 13:46:01 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Hans de Goede <hdegoede@...hat.com>,
        Takashi Iwai <tiwai@...e.de>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] pinctrl: intel: Allow custom GPIO base for pad groups

On Mon, Nov 27, 2017 at 2:54 PM, Mika Westerberg
<mika.westerberg@...ux.intel.com> wrote:

> Currently we always have direct mapping between GPIO numbers and the
> hardware pin numbers. However, there are cases where that's not the case
> anymore (more about this in the next patch). Instead we need to be able
> to specify custom GPIO base for certain pad groups.
>
> To support this, add a new field (gpio_base) to the pad group structure
> and update the core Intel pinctrl driver to handle this accordingly.
> Passing 0 as gpio_base will use direct mapping so the existing drivers
> do not need to be modified. Passing -1 excludes the whole pad group from
> having GPIO mapping.
>
> Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>

Patch applied with Andy's ACK.

Yours,
Linus Walleij