Re: [PATCH] ASoC: amd: acp: Set gpio_spkr_en to None for max speaker amplifer in machine driver

[Curtis Malainey <cujomalainey@google.com>]

On Tue, Feb 1, 2022 at 10:56 AM Mark Brown <broonie@kernel.org> wrote:
>
> On Tue, Feb 01, 2022 at 02:02:15AM +0530, V sujith kumar Reddy wrote:
>
> > Maxim codec driver already enabling/disabling spk_en_gpio in form of sd_mode gpio
> > hence remove such gpio access control from machine driver to avoid conflict
>
>
> > -     .gpio_spkr_en = EN_SPKR_GPIO_NK,
> > +     .gpio_spkr_en = EN_SPKR_GPIO_NONE,
> >  };
> >
> >  static struct acp_card_drvdata sof_rt5682s_rt1019_data = {
> > @@ -56,7 +56,7 @@ static struct acp_card_drvdata sof_rt5682s_max_data = {
> >       .hs_codec_id = RT5682S,
> >       .amp_codec_id = MAX98360A,
> >       .dmic_codec_id = DMIC,
> > -     .gpio_spkr_en = EN_SPKR_GPIO_NK,
> > +     .gpio_spkr_en = EN_SPKR_GPIO_NONE,
> >  };
>
> This looks like a good fix for the immediate issue which fixes the
> MAX9360A systems without breaking the RT1019 ones, however as I said in
> the thread about Curtis' revert it's not clear what the ideal thing is
> here.  There's no documentation about the RT1019 that I can find so it's
> not clear to me what exactly the GPIO is controlling, if it's part of
> the RT1019 or something else.  That influences where the most tasteful
> place to control this GPIO is.  Curtis noted that the RT1019 driver
> includes gpiolib headers but that could just as easily be cut'n'paste as
> intentional.  What's the story here?
>
> I do also note that the current code just turns the GPIO on and leaves
> it on which presumably isn't great from a power management point of
> view.

Yes that is correct, this is the quick fix that will alleviate the
gpio contention issue. But I think there is a better solution here.
According to the sheet I have, the pin for the alc1019 is the same as
the max98357a and its a shutdown pin for the amp.