[Trac #307] PS/2 trackpad and keyboard don't work in OF

[Zarro Boogs per Child]

#307: PS/2 trackpad and keyboard don't work in OF
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 Reporter:  dwmw2   |        Owner:  wmb at firmworks.com
     Type:  defect  |       Status:  closed           
 Priority:  normal  |    Milestone:  BTest-1          
Component:  OFW     |   Resolution:  fixed            
 Keywords:          |  
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Changes (by wmb at firmworks.com):

  * status:  new => closed
  * resolution:  => fixed

Comment:

 The root cause is that the ALPS keyboard seems to send an extra ACK after
 the KBD_RESET command (ff) if you neglect to consume the data value (e0)
 returned after the 8042 "test lines" command.

 That extra ack caused kbd-reset to fail because, instead of receiving the
 expected "fa aa" response from the "ff" command, it instead received "fa
 fa aa", i.e. two acks.

 I fixed this by consuming all the data bytes after the "test-lines"
 command, and then kbd-reset returned just the expected sequence.

 Fixed in Q2A20.

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Ticket URL: <http://dev.laptop.org/ticket/307#comment:3>
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