#1407 HIGH BTest-4: Touchpad recalibration should be forced under some circumstances.

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#1407: Touchpad recalibration should be forced under some circumstances.
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  Reporter:  jg                   |       Owner:  rsmith 
      Type:  defect               |      Status:  new    
  Priority:  high                 |   Milestone:  BTest-4
 Component:  embedded controller  |     Version:         
Resolution:                       |    Keywords:         
  Verified:  0                    |  
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Changes (by jg):

 * cc: Eben, dilinger, David.Lin (added)
  * keywords:  Eben =>
  * verified:  => 0
  * owner:  David.Lin => rsmith

Comment:

 http://wiki.laptop.org/go/Touch_Pad/Tablet has the ALPS document.

 ShigaSan also has requested when I met with him during the B2 build we
 send a recalibrate command when we go onto or off of power (to avoid
 having to wait for autorecalibration).

 I'd suggest we *may* also do after opening the lid (or leaving ebook mode)
 as insurance.  This is to cause the re-calibrations to occur when the
 capacitance of the environment is likely to have changed. But this may
 require experimentation to see.

 Whether we should do this all in the EC, in the ALPS kernel driver, or in
 the Hardware manager is not at all clear to me.  Let's set up a time to
 talk through the options.

-- 
Ticket URL: <http://dev.laptop.org/ticket/1407#comment:5>
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