andy git 06/15 suspend/resume observations

Mark Brown broonie at
Mon Jun 16 18:06:32 CEST 2008

On Mon, Jun 16, 2008 at 12:51:06PM +0200, Joerg Reisenweber wrote:

> But shouldn't this be direct reads of the *real* registers, for we don't 
> use "2-wire"? Otherwise, i guess, ALSA has no idea of the changes that can be 

You are using 2-wire mode, just under the name "I2C".

> Anyway, I don't like this, caching of regs where you could read actual value 
> as well.

The WM8753 does not support register readback at all.

In any case, as Andy says I2C is slow so if the register cache was
removed there would be a noticable performance impact on the system in
use, especially when doing things like bringing up paths.

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