#2765 BLOC 8.2.1: Need programmable delay to turn off DCON chip.

[Zarro Boogs per Child]

#2765: Need programmable delay to turn off DCON chip.
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   Reporter:  jg                   |       Owner:  cjb           
       Type:  defect               |      Status:  new           
   Priority:  blocker              |   Milestone:  8.2.1         
  Component:  power manager (OHM)  |     Version:                
 Resolution:                       |    Keywords:  power, relnote
Next_action:  never set            |    Verified:  0             
  Blockedby:                       |    Blocking:                
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Comment(by cjb):

 Hi,

 > I think we should try powering off the DCON chip anytime we're asking
 the DCON chip to power off the screen.

 We already do that.  This bug is talking about the scenario of:

  * we're going into idle suspend, so we dim the screen
  * but if we haven't been woken up five minutes later, then we want to
 save power by turning off the screen and DCON
  * but we can't run any code on the CPU because we turned it off.

 > Waking the CPU. having Ohm turn things on or off, then decide to shut
  down the CPU again, is simple.

 Only if you rely on something else to trigger the waking for you.  We
 haven't yet set wakeups for ourself, and that's the main feature of this
 bug.  (I'm not saying it's difficult, just that it's new code to set timed
 wakeups, and track whether a timed wakeup is the reason we just woke up.)

-- 
Ticket URL: <http://dev.laptop.org/ticket/2765#comment:14>
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