#2258 BLOC CTest: Power savings in keyboard/touchpad in suspend/resume in *new version for MP*

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#2258: Power savings in keyboard/touchpad in suspend/resume in *new version for
MP*
----------------------+-----------------------------------------------------
  Reporter:  jg       |       Owner:  dilinger
      Type:  defect   |      Status:  new     
  Priority:  blocker  |   Milestone:  CTest   
 Component:  kernel   |     Version:          
Resolution:           |    Keywords:          
  Verified:  0        |  
----------------------+-----------------------------------------------------
Old description:

> From Shiga-san
>
> The down of power operation that had gotten into the news with the mail
> before was built in from the following C-TEST  ver
> ?
> Product     :? C-test     (  Production day:    July.20 )
> Device ID  :   67  00 3C  --->   67 00 50
>
> Besides this, the executive program for mass production was built in.
>

> It is details of PowerDown mode.
> -----------------------------------------------------------------------------------------
> 10)  The PowerDown Mode command (All functions are stopped).         *D
> ver
>        EC EC EA EC  :  PowerDown Mode(Suspend mode)
>
>   If the command is received, the function is stopped and it becomes low
> current consumption operation.  The restoration method enters the state
> of Power ON by making the MS-DAT signal Low.
> Afterwards, the communication will become possible in about one second.
>
> ex.   EC(FA)  EC(FA)  EA(FA)  EC(FA)
> ------------------------------------------------------------------------------------------
>
> Current consumption becomes about 50uA when becoming this mode.
> The method of operation again is a thing to make the signal line of  MS-
> DAT Low. This operation is the same as doing operation that sends the
> command  to HGPK (device).

New description:

 From Shiga-san:

 The down of power operation that had gotten into the news with the mail
 before was built in from the following C-TEST  ver
 ?
 Product     :? C-test     (  Production day:    July.20 )
 Device ID  :   67  00 3C  --->   67 00 50

 Besides this, the executive program for mass production was built in.


 It is details of PowerDown mode.
 -----------------------------------------------------------------------------------------
 10)  The PowerDown Mode command (All functions are stopped).         *D
 ver
        EC EC EA EC  :  PowerDown Mode(Suspend mode)

   If the command is received, the function is stopped and it becomes low
 current consumption operation.  The restoration method enters the state of
 Power ON by making the MS-DAT signal Low.
 Afterwards, the communication will become possible in about one second.

 ex.   EC(FA)  EC(FA)  EA(FA)  EC(FA)
 ------------------------------------------------------------------------------------------

 Current consumption becomes about 50uA when becoming this mode.
 The method of operation again is a thing to make the signal line of  MS-
 DAT Low. This operation is the same as doing operation that sends the
 command  to HGPK (device).

Comment (by jg):

 Andres,

 First, we need to check that the version ID change will not break the
 driver.  My memory is that the driver are very tolerant of version
 changes. As soon as that is done, please comment on this item and lower
 its priority from "blocker".  We need to ensure CTest will go smoothly,
 and once bit, twice shy.

 Secondly, we need to use the low power mode of the touchpad/keyboard
 appropriately.  Certainly, when the lid switch says the laptop is closed,
 we should save the power. Obviously, we have other work to do that will
 save more power to do first.  So the milestone and priority can be shoved
 out once the version ID check has been done.

-- 
Ticket URL: <http://dev.laptop.org/ticket/2258#comment:1>
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