gaia: update ap_suspended usage

This CL updates ap_suspended usage so that it's only updated when it
makes sense to do so:
- Clear ap_suspended during power_off() since it can only be reliably
  determined when the pull-up on PA7 is enabled (when AP is on).
- chipset_in_state() should not re-assign ap_suspended. That was a hack
  to try to get around earlier brokenness. However, that does not
  really work since SUSPEND_L can appear to be asserted when AP is
  off and could cause ap_suspended to become inconsistent with the
  actual AP state.
- When AP is on, ap_suspended should be managed by gaia_suspend_event.
  When AP is off, ap_suspended should be 0 (

Signed-off-by: David Hendricks <dhendrix@chromium.org>
BRANCH=snow
BUG=chrome-os-partner:13200
TEST=tested on Snow using "power" command at EC console

1. AP running
> power
on

2. after running powerd_suspend
> power
suspend

3. "power off" at EC console
> power
off

Change-Id: I88dad9f02d57fe7244bf607eea2088ee0b80b75a
Reviewed-on: https://gerrit.chromium.org/gerrit/31627
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Ready: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>

0 files changed, 0 insertions, 0 deletions