On Tue, Oct 04, 2011 at 05:24:32PM +0800, Axel Lin wrote:

I just found that after commit be3ea3b9e "SoC: Use new register map API for ASoC generic physical I/O", snd_soc_codec_set_cache_io does not set codec->hw_write any more.

It is still used in some drivers. e.g. In wm8988_resume, we call codec->hw_write(codec->control_data, data, 2);

For the drivers that is using snd_soc_codec_set_cache_io now, where is the place to set codec->hw_write callback now?

These drivers should be using the standard I/O functions, probably they're looking for the cache_bypass flag. Either that or convert to use regmap directly.