linux-kernel - [PATCH 0/2] Allow detecting ACP6x DMIC via

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Message-ID: <20220411134532.13538-1-mario.limonciello@amd.com>
Date:   Mon, 11 Apr 2022 08:45:30 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        "Jaroslav Kysela" <perex@...ex.cz>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>
CC:     Vijendar Mukunda <Vijendar.Mukunda@....com>,
        open list <linux-kernel@...r.kernel.org>,
        Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH 0/2] Allow detecting ACP6x DMIC via _DSD

It's not possible to probe for the presence of a DMIC, so the ACP6x
machine driver currently has a hardcoded list of all the systems known
to have a DMIC connected to the ACP.

Although this design works it means that the acp6x driver needs to always
grow with more systems and worse, if an OEM introduces a new system there
will be a mismatch in time that even if the driver (otherwise) works fine
it needs their system added to the list to work.

So this series introduces a _DSD that OEMs can populate into the BIOS to
indicate presence of a DMIC.

Mario Limonciello (2):
  ASoC: amd: Add driver data to acp6x machine driver
  ASoC: amd: Add support for enabling DMIC on acp6x via _DSD

 sound/soc/amd/yc/acp6x-mach.c | 42 +++++++++++++++++++++++++++++++----
 1 file changed, 38 insertions(+), 4 deletions(-)

-- 
2.34.1