https://bugzilla.kernel.org/show_bug.cgi?id=15897
Lan Tianyu <tianyu....@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tianyu....@intel.com
AssignedTo|rui.zh...@intel.com |tianyu....@intel.com
--- Comment #25 from Lan Tianyu <tianyu....@intel.com> 2013-06-25 07:26:42 ---
Hi:
Just check FAN's power resource FN00 and FN01 in the the ACPI dsdt table.
They are fake power resources. _ON and _OFF method just store the ONE or ZERO
to VFN1(define in the system mem operation region) as status value and then
check ECON. But after checking, do nothing. So can't control FAN via ACPI FAN's
power resource. So this should be a Bios issue.
PowerResource (FN01, 0x00, 0x0000)
{
Method (_STA, 0, Serialized) // _STA: Status
{
Return (VFN1)
}
Method (_ON, 0, Serialized) // _ON_: Power On
{
Store (One, VFN1)
If (LAnd (ECON, ETMD)) {}
}
Method (_OFF, 0, Serialized) // _OFF: Power Off
{
Store (Zero, VFN1)
If (LAnd (LAnd (ECON, ETMD), LAnd (ECON, VFN0))) {}
}
}
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