linux-kernel - Re: [PATCH v2 1/2] gpio: acpi: add quirk to override GpioInt polarity

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Message-ID: <20190902160606.GR2680@smile.fi.intel.com>
Date:   Mon, 2 Sep 2019 19:06:06 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Peter Cai <peter@...eblog.net>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Bastien Nocera <hadess@...ess.net>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux Input <linux-input@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] gpio: acpi: add quirk to override GpioInt polarity

On Mon, Sep 02, 2019 at 03:36:24PM +0200, Linus Walleij wrote:
> On Mon, Sep 2, 2019 at 12:01 PM Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
> > On Sat, Aug 31, 2019 at 11:09:14AM +0800, Peter Cai wrote:
> > > On GPD P2 Max, the firmware could not reset the touch panel correctly.
> > > The kernel needs to take on the job instead, but the GpioInt definition
> > > in DSDT specifies ActiveHigh while the GPIO pin should actually be
> > > ActiveLow.
> > >
> > > We need to override the polarity defined by DSDT. The GPIO driver
> > > already allows defining polarity in acpi_gpio_params, but the option is
> > > not applied to GpioInt.
> > >
> > > This patch adds a new quirk that enables the polarity specified in
> > > acpi_gpio_params to also be applied to GpioInt.
> >
> > Thank you for an update!
> >
> > Acked-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> >
> > on the condition that Dmitry and other input / Goodix developers are okay with
> > the approach in general.
> 
> Acked-by: Linus Walleij <linus.walleij@...aro.org>
> In case Dmitry needs to merge this.
> 
> Or should I simply merge this patch to the GPIO tree?

For my opinion Input subsystem should decide how to proceed with this.

-- 
With Best Regards,
Andy Shevchenko