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From:   Arnd Bergmann <arnd@kernel.org>
Date:   Thu, 5 May 2022 16:59:35 +0200
Message-ID: <CAK8P3a2cYUYMKSMo3VOLVTO0=LWc0sHf72Eph8t_es9axo_eeA@mail.gmail.com>
Subject: Re: [PATCH 18/48] ARM: pxa: hx4700: use gpio descriptors for audio
To:     Mark Brown <broonie@kernel.org>
Cc:     Linus Walleij <linus.walleij@linaro.org>,
        Robert Jarzmik <robert.jarzmik@free.fr>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        Arnd Bergmann <arnd@arndb.de>, Daniel Mack <daniel@zonque.org>,
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On Thu, May 5, 2022 at 4:39 PM Mark Brown <broonie@kernel.org> wrote:
> On Thu, May 05, 2022 at 04:33:06PM +0200, Linus Walleij wrote:
> > On Thu, May 5, 2022 at 8:04 AM Arnd Bergmann <arnd@kernel.org> wrote:
>
> > > /* Headphones jack detection DAPM pin */
> > > static struct snd_soc_jack_pin hs_jack_pin[] = {
> > >         {
> > >                 .pin    = "Headphone Jack",
> > >                 .mask   = SND_JACK_HEADPHONE,
> > >         },
> > >         {
> > >                 .pin    = "Speaker",
> > >                 /* disable speaker when hp jack is inserted */
> > >                 .mask   = SND_JACK_HEADPHONE,
> > >                 .invert = 1,
> > >         },
>
> > Hm some ASoC thingie. No idea what that is, but I suppose another
> > place where a subsystem for legacy reasons try to do the gpiolib
> > inversion on it's own accord. That one isn't flagged as active low in the
> > descriptor so it's fine I guess.
>
> It's saying that when the headphone is inserted the headphone output
> should be enabled and the speaker output should be disabled, and vice
> versa.

Ok, that sounds like I should remove the flag here if I declare the
GPIO line as GPIO_ACTIVE_LOW instead of GPIO_ACTIVE_HIGH, right?

         Arnd