linux-kernel - Re: [PATCH 4.19 003/206] ASoC: tegra: tegra_wm8903: Support nvidia, headset property

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Message-ID: <20200625190119.GA5531@duo.ucw.cz>
Date:   Thu, 25 Jun 2020 21:01:19 +0200
From:   Pavel Machek <pavel@...x.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Dmitry Osipenko <digetx@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 4.19 003/206] ASoC: tegra: tegra_wm8903: Support nvidia,
 headset property

Hi!

> [ Upstream commit 3ef9d5073b552d56bd6daf2af1e89b7e8d4df183 ]
> 
> The microphone-jack state needs to be masked in a case of a 4-pin jack
> when microphone and ground pins are shorted. Presence of nvidia,headset
> tells that WM8903 CODEC driver should mask microphone's status if short
> circuit is detected, i.e headphones are inserted.

> +	if (of_property_read_bool(card->dev->of_node, "nvidia,headset"))
> +		shrt = SND_JACK_MICROPHONE;
> +

This property is not properly documented, not it is used anywhere.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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