linux-kernel - Re: [PATCH 01/14] mfd: arizona: Add jack pointer to struct arizona

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Message-ID: <20201228122138.GA5352@sirena.org.uk>
Date:   Mon, 28 Dec 2020 12:21:38 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        patches@...nsource.cirrus.com, linux-kernel@...r.kernel.org,
        alsa-devel@...a-project.org
Subject: Re: [PATCH 01/14] mfd: arizona: Add jack pointer to struct arizona

On Sun, Dec 27, 2020 at 10:12:19PM +0100, Hans de Goede wrote:
> The Linux Arizona driver uses the MFD framework to create several
> sub-devices for the Arizona codec and then uses a driver per function.
> 
> The jack-detect support for the Arizona codec is handled by the
> extcon-arizona driver. This driver exports info about the jack state
> to userspace through the standard extcon sysfs class interface.
> 
> But standard Linux userspace does not monitor/use the extcon sysfs
> interface for jack-detection.

This seems like the wrong layer to fix this problem at, this issue will
apply to all extcon devices that can detect audio.

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