soc/baytrail: 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: Iad947ae2cd541d3407455b218c2b352b9a373718 Signed-off-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-on: https://review.coreboot.org/19973 Reviewed-by: Martin Roth <martinroth@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -23,6 +23,23 @@ Device (XHCI)
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Device (RHUB)
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{
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Name (_ADR, 0x00000000)
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// GPLD: Generate Port Location Data (PLD)
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Method (GPLD, 1, Serialized) {
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Name (PCKG, Package (0x01) {
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Buffer (0x10) {}
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})
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// REV: Revision 0x02 for ACPI 5.0
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CreateField (DerefOf (Index (PCKG, Zero)), Zero, 0x07, REV)
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Store (0x02, REV)
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// VISI: Port visibility to user per port
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CreateField (DerefOf (Index (PCKG, Zero)), 0x40, One, VISI)
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Store (Arg0, VISI)
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Return (PCKG)
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}
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Device (PRT1) { Name (_ADR, 1) }
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Device (PRT2) { Name (_ADR, 2) }
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Device (PRT3) { Name (_ADR, 3) }
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