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soc/broadwell: add ACPI method to generate USB port info 

Add ACPI method GPLD to generate port location data when
passed visiblity info.  Will be used by _PLD method in
board-specific USB .asl files.

Change-Id: Id6e6699fe3eaafbe6847479d45c70a1d57bd327a
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/19969
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
This commit is contained in:
Matt DeVillier 2017-04-17 18:36:26 -05:00 committed by Martin Roth
parent ce768f3baf
commit b79d058767
1 changed files with 16 additions and 0 deletions
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16
src/soc/intel/broadwell/acpi/xhci.asl
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@ -355,6 +355,22 @@ Device (XHCI)
{
Name (_ADR, 0x00000000)
// GPLD: Generate Port Location Data (PLD)
Method (GPLD, 1, Serialized) {
Name (PCKG, Package (0x01) {
Buffer (0x10) {}
})
// REV: Revision 0x02 for ACPI 5.0
CreateField (DerefOf (Index (PCKG, Zero)), Zero, 0x07, REV)
Store (0x02, REV)
// VISI: Port visibility to user per port
CreateField (DerefOf (Index (PCKG, Zero)), 0x40, One, VISI)
Store (Arg0, VISI)
Return (PCKG)
}
Device (PRT1) { Name (_ADR, 1) } // USB Port 0
Device (PRT2) { Name (_ADR, 2) } // USB Port 1
Device (PRT3) { Name (_ADR, 3) } // USB Port 2