amd/stoneyridge: Add ASL for D-states on AOAC devices

Duplicate ASL from AMD's FchCarrizo.asl (available in NDA PI package)
that can put AOAC devices into D0 or D3cold.  The argument numbers
coincide with the AOAC register offsets for the various devices.

SATA, USB, and SD require additional device configuration.  Add a
placeholder and mark as todo.

BUG=b:77602074

Change-Id: I32426f744a5ebbad9e8d3f2f37c4d214ad6dd3d4
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/28769
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 154 insertions, 0 deletions

diff --git a/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl b/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl
index 923c90fc6f..2271d67d00 100644
--- a/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl
+++ b/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl
@@ -427,3 +427,157 @@ Field(FCFG, DwordAcc, NoLock, Preserve)
 	FC18, 1, /* Force 1.8v */
 
 }
+
+/*
+ * Arg0:device:
+ *  5=I2C0, 6=I2C1, 7=I2C2, 8=I2C3, 11=UART0, 12=UART1,
+ *  15=SATA, 18=EHCI, 23=xHCI, 24=SD
+ * Arg1:D-state
+ */
+Mutex (FDAS, 0) /* FCH Device AOAC Semophore */
+Method(FDDC, 2, Serialized)
+{
+	Acquire(FDAS, 0xffff)
+
+	if(LEqual(Arg1, 0)) {
+		Switch(ToInteger(Arg0)) {
+			Case(Package() {5, 15, 24}) {
+				Store(One, PG1A)
+			}
+			Case(Package() {6, 7, 8, 11, 12, 18}) {
+				Store(One, PG2_)
+			}
+		}
+		/* put device into D0 */
+		Switch(ToInteger(Arg0))
+		{
+			Case(5) {
+				Store(0x00, I0TD)
+				Store(One, I0PD)
+				Store(I0DS, Local0)
+				while(LNotEqual(Local0,0x7)) {
+					Store(I0DS, Local0)
+				}
+			}
+			Case(6) {
+				Store(0x00, I1TD)
+				Store(One, I1PD)
+				Store(I1DS, Local0)
+				while(LNotEqual(Local0,0x7)) {
+					Store(I1DS, Local0)
+				}
+			}
+			Case(7) {
+				Store(0x00, I2TD)
+				Store(One, I2PD)
+				Store(I2DS, Local0)
+				while(LNotEqual(Local0,0x7)) {
+					Store(I2DS, Local0)
+				}
+			}
+			Case(8) {Store(0x00, I3TD)
+				Store(One, I3PD)
+				Store(I3DS, Local0)
+				while(LNotEqual(Local0,0x7)) {
+					Store(I3DS, Local0)
+				}
+			}
+			Case(11) {
+				Store(0x00, U0TD)
+				Store(One, U0PD)
+				Store(U0DS, Local0)
+				while(LNotEqual(Local0,0x7)) {
+					Store(U0DS, Local0)
+				}
+			}
+			Case(12) {
+				Store(0x00, U1TD)
+				Store(One, U1PD)
+				Store(U1DS, Local0)
+				while(LNotEqual(Local0,0x7)) {
+					Store(U1DS, Local0)
+				}
+			}
+/* todo			Case(15) { STD0()} */ /* SATA */
+/* todo			Case(18) { U2D0()} */ /* EHCI */
+/* todo			Case(23) { U3D0()} */ /* XHCI */
+/* todo			Case(24) { SDD0()} */ /* SD   */
+		}
+	} else {
+		/* put device into D3cold */
+		Switch(ToInteger(Arg0))
+		{
+			Case(5) {
+				Store(Zero, I0PD)
+				Store(I0DS, Local0)
+				while(LNotEqual(Local0,0x0)) {
+					Store(I0DS, Local0)
+				}
+				Store(0x03, I0TD)
+			}
+			Case(6) {
+				Store(Zero, I1PD)
+				Store(I1DS, Local0)
+				while(LNotEqual(Local0,0x0)) {
+					Store(I1DS, Local0)
+				}
+				Store(0x03, I1TD)
+			}
+			Case(7)  {
+				Store(Zero, I2PD)
+				Store(I2DS, Local0)
+				while(LNotEqual(Local0,0x0)) {
+					Store(I2DS, Local0)
+				}
+				Store(0x03, I2TD)}
+			Case(8) {
+				Store(Zero, I3PD)
+				Store(I3DS, Local0)
+				while(LNotEqual(Local0,0x0)) {
+					Store(I3DS, Local0)
+				}
+				Store(0x03, I3TD)
+			}
+			Case(11) {
+				Store(Zero, U0PD)
+				Store(U0DS, Local0)
+				while(LNotEqual(Local0,0x0)) {
+					Store(U0DS, Local0)
+				}
+				Store(0x03, U0TD)
+			}
+			Case(12) {
+				Store(Zero, U1PD)
+				Store(U1DS, Local0)
+				while(LNotEqual(Local0,0x0)) {
+					Store(U1DS, Local0)
+				}
+				Store(0x03, U1TD)
+			}
+/* todo			Case(15) { STD3()} */ /* SATA */
+/* todo			Case(18) { U2D3()} */ /* EHCI */
+/* todo			Case(23) { U3D3()} */ /* XHCI */
+/* todo			Case(24) { SDD3()} */ /* SD   */
+		}
+		/* Turn off Power */
+		if(LEqual(I0TD, 3)) {
+			if(LEqual(SATD, 3)) {
+				if(LEqual(SDTD, 3)) { Store(Zero, PG1A) }
+			}
+		}
+		if(LEqual(I1TD, 3)) {
+			if(LEqual(I2TD, 3)) {
+				if(LEqual(I3TD, 3)) {
+					if(LEqual(U0TD, 3)) {
+						if(LEqual(U1TD, 3)) {
+							if(LEqual(U2TD, 3)) {
+								Store(Zero, PG2_)
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+	Release(FDAS)
+}