On Sun, 2011-01-09 at 16:15 -0600, Timur Tabi wrote:

Mark,

The comments for snd_soc_codec_set_cache_io() say this:

• Note that at present this code cannot be used by CODECs with
• volatile registers.

Is this still true? I ask because I think I've been able to use this function in the CS4270 with volatile registers, and it appears to work.

This seems to be outdated. The soc-cache code can handle volatile registers correctly if the driver has provided a volatile_register callback which returns 1 for all registers that are volatile and 0 for all others.

Thanks, Dimitris