[alsa-devel] [PATCH] ASoC: io: Remove hw_read() operation

[Mark Brown]

On Tue, Mar 04, 2014 at 10:20:16AM +0100, Lars-Peter Clausen wrote:

> >  	codec->write = hw_write;
> >-	codec->read = hw_read;

> But this part will break snd_soc_read() and with it basically every
> driver that has any controls or DAPM widgets.

Bah, so it does.

> I do have a set of patches that moves IO to the component level that
> will clean this all up quite a bit. I'm just waiting for Xiubo Li
> snd_soc_codec_set_cache_io() cleanup to be merged first, since it
> will make things a bit simpler.

That seems to be going really slowly...  in any case the real fix here
is to get all the users converted over to regmap.  We could also just
do something similar to what we've done with update_bits() (where we did
it for locking) which is going to be much quicker.
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