#1555 BLOC BTest-4: No way to determine "ebook mode" state.

[Zarro Boogs per Child]

#1555: No way to determine "ebook mode" state.
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  Reporter:  cjb      |       Owner:  dilinger
      Type:  defect   |      Status:  new     
  Priority:  blocker  |   Milestone:  BTest-4 
 Component:  kernel   |     Version:          
Resolution:           |    Keywords:  power   
  Verified:  0        |  
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Comment (by dilinger):

 I'm looking for suggestions of how to export this to userspace.  It seems
 like the ebook state is most closely related to the dcon, so the easiest
 way to do this would be to create /sys/platform/devices/dcon/ebook
 (containing a '1' or '0' value).

 Of course, it's not *really* part of the dcon driver (and include EC
 commands in the dcon driver does not thrill me).  So, another option is to
 create an EC-specific platform driver, which would allow us to have
 /sys/bus/platform/devices/ec/ebook .  This would allow us more flexibility
 in the future; we could have an interface for issuing EC commands from
 userspace ('echo 2a > /sys/bus/platform/devices/ec/cmd'), as well as
 additional EC-related info (ie,
 /sys/bus/platform/devices/ec/dcon_power_rail).

 We could also just do /proc/ebook or something lame like that..  Ideas?

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Ticket URL: <http://dev.laptop.org/ticket/1555#comment:8>
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