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

HI Mark,

On 2016年04月18日 17:53, Mark Brown wrote:

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?

In my opinion, this function is mainly to provide simple-card (patch_2/3).

This function will call and initialize jack detection if a codec supports it and fill the detect_jack function (patch_3/3 use it), and, we don't need to create a customized machine driver to call the codec jack detection, the simple-card is able to parse them.

Thanks.