linux-kernel - Re: [PATCH v3] ASoC: Intel: kbl_rt5663_rt5514_max98927: Split be_hw_params

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Message-ID: <CAFJ_xbq-QotvPG=AxSp7=Etc5P5f4ePRWLCvSNnTkzUO9o_qjQ@mail.gmail.com>
Date:   Thu, 21 May 2020 19:30:48 +0200
From:   Łukasz Majczak <lma@...ihalf.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     alsa-devel@...a-project.org, Jie Yang <yang.jie@...ux.intel.com>,
        Radoslaw Biernacki <rad@...ihalf.com>,
        Ross Zwisler <zwisler@...gle.com>,
        linux-kernel@...r.kernel.org,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Bob Brandt <brndt@...gle.com>, Marcin Wojtas <mw@...ihalf.com>,
        Alex Levin <levinale@...omium.org>
Subject: Re: [PATCH v3] ASoC: Intel: kbl_rt5663_rt5514_max98927: Split
 be_hw_params_fixup function

Hi Pierre

If you will take a look at the original kabylake_ssp_fixup() you will
see that it is checking whether the related FE is "Kbl Audio Port",
"Kbl Audio Headset Playback", "Kbl Audio Capture Port" or "Kbl Audio
DMIC cap" - then for the first 3 cases it sets min/max channels to 2
while for the "Kbl DMIC cap" it can be 2 or 4, that's is why I'm
trying to split this, but maybe I'm missing here something.

Best regards,
Lukasz

czw., 21 maj 2020 o 19:17 Pierre-Louis Bossart
<pierre-louis.bossart@...ux.intel.com> napisał(a):
>
>
>
> On 5/21/20 12:08 PM, Łukasz Majczak wrote:
> >>
> >> don't add a new dailink, this is not right.
> >>
> > Can you advise a better solution how to assign different fixup
> > functions to mic and to speakers? I was looking at "dmic01" dailink in
> > skl_nau88l25_max98357a.c as an example.
>
> I am not sure I follow. the DMICs are handled on a shared SSP, so how
> would one set a different fixup? The word length have to be the same.