System Software Teleconference minutes, 2007-03027

[Jaya Kumar]

On 3/29/07, Mitch Bradley <wmb at firmworks.com> wrote:
> System Software Teleconference, 20070327
> Power Management:
> The audio CODEC has some deep sleep modes too.

I believe our current implementation hits AD1888 full shutdown mode,
ie: cs5535audio + ac97 takes AD1888 to PR0..6 + EAPD.

btw, assuming no pop/click on audio suspend/resume, turning on
CONFIG_SND_AC97_POWER_SAVE by default may be useful on B3. That option
turns on aggressive power saving, meaning if nothing has a pcm open,
then it'll suspend audio until resume on open.

BR,
jaya