http://bugzilla.kernel.org/show_bug.cgi?id=13563
--- Comment #4 from Zhang Rui <rui.zh...@intel.com> 2009-06-22 02:51:23 ---
If (LEqual (Local0, 0x02)) // battery is present
{
And (Local7, One, Local0) // get the AC status
If (LEqual (Local0, One)) // if AC is on
{
And (Local7, 0x80, Local1) // get the Battery status
If (LEqual (Local1, 0x80)) // if battery is charging
{
Or (Local4, 0x02, Local4) // _BST returns charging
}
Else // if battery is not
charging
{
Or (Local4, One, Local4) // _BST returns discharing
}
}
}
// _BST returns Charged if AC is off ?
This is how the Battery state field of _BST is set in the original DSDT.
This is apparently wrong.
I have modified the AML to
If (LEqual (Local0, 0x02))
{
And (Local7, One, Local0)
If (LEqual (Local0, One))
{
And (Local7, 0x80, Local1)
If (LEqual (Local1, 0x80))
{
Or (Local4, 0x02, Local4) // if AC is on and
battery is charging, it's "Charging"
}
// if AC is on and battery is not charging, it's
"Charged"
}
Else
{
Or (Local4, One, Local4) // if AC is not on, it's
"Discharging"
}
}
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