linux-kernel - Re: [PATCH 1/3] ASoC: jack: Add a jack detect callback via codec

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Date:	Mon, 18 Apr 2016 10:53:02 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Xing Zheng <zhengxing@...k-chips.com>
Cc:	linux-rockchip@...ts.infradead.org, heiko@...ech.de,
	Adam.Thomson@...semi.com, sugar.zhang@...k-chips.com,
	jay.xu@...k-chips.com, Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] ASoC: jack: Add a jack detect callback via codec

On Mon, Apr 18, 2016 at 05:43:51PM +0800, Xing Zheng wrote:

> The patch_1/3 add an export of a function that calls the _detect_jack_
> function
> when a codec supports jack detection and fill the _detect_jack_ function in
> the
> struct snd_soc_codec_driver.

But why would anything ever call this function?  How is this supposed to
be used?

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