ec/apple: Add ACPI code for Apple MacBooks

- Move ACPI code for Apple MacBooks to a separate directory to avoid
  its duplication in mainboards
- Add AC and lid implementations for newer generations
- Rewrite old code using the new ASL syntax

Tested on MBA 5,2, MBP 8,1 and MBP 10,1.

Change-Id: I3d4585aac8e3ebbfed6ce4d4e39fbc33ac983069
Signed-off-by: Evgeny Zinoviev <me@ch1p.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33102
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

4 files changed, 267 insertions, 0 deletions

diff --git a/src/ec/apple/acpi/ac.asl b/src/ec/apple/acpi/ac.asl
new file mode 100644
index 0000000000..0103229936
--- /dev/null
+++ b/src/ec/apple/acpi/ac.asl
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Scope(\_SB.PCI0.LPCB.EC)
+{
+	Field(ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset(HPAC_OFFSET),
+			, 1,
+		HPAC, 1,  /* AC status */
+	}
+
+	Device(AC)
+	{
+		Name(_HID, "ACPI0003")
+		Name(_UID, 0x00)
+		Name(_PCL, Package() { \_SB } )
+
+		Method(_PSR, 0, NotSerialized)
+		{
+			Return(HPAC)
+		}
+
+		Method(_STA, 0, NotSerialized)
+		{
+			Return(0x0f)
+		}
+	}
+}
diff --git a/src/ec/apple/acpi/battery.asl b/src/ec/apple/acpi/battery.asl
new file mode 100644
index 0000000000..291451f414
--- /dev/null
+++ b/src/ec/apple/acpi/battery.asl
@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Field(ERAM, ByteAcc, NoLock, Preserve)
+{
+	Offset(0x20),
+	SPTR,	8,
+	SSTS,	8,
+	SADR,	8,
+	SCMD,	8,
+	SBFR,	256,
+}
+
+Field(ERAM, ByteAcc, Lock, Preserve)
+{
+	Offset(0x24),
+	SBDW,	16,
+}
+
+Method(SBPC, 0, NotSerialized)
+{
+	Local0 = 1000
+	While (Local0)
+	{
+		If (SPTR == 0x00)
+		{
+			Return()
+		}
+
+		Sleep(1)
+		Local0--
+	}
+}
+
+Method(SBRW, 2, NotSerialized)
+{
+	Acquire(ECLK, 0xFFFF)
+	SADR = ShiftLeft(Arg0, 0x01)
+	SCMD = Arg1
+	SPTR = 0x09
+	SBPC()
+	Local0 = SBDW
+	Release(ECLK)
+	Return(Local0)
+}
+
+Method(SBRB, 2, NotSerialized)
+{
+	Acquire(ECLK, 0xFFFF)
+	SADR = ShiftLeft(Arg0, 0x01)
+	SCMD = Arg1
+	SPTR = 0x0B
+	SBPC()
+	Local0 = SBFR
+	Release(ECLK)
+	Return(Local0)
+}
+
+Device(BAT0)
+{
+	Name(_HID, EisaId("PNP0C0A"))
+	Name(_UID, 0x00)
+	Name(_PCL, Package() { \_SB })
+
+	Name(BATS, Package()
+	{
+		0x00,		// 0: PowerUnit: Report in mWh
+		0xFFFFFFFF,	// 1: Design cap
+		0xFFFFFFFF,	// 2: Last full charge cap
+		0x01,		// 3: Battery Technology
+		10800,		// 4: Design Voltage(mV)
+		0x00,		// 5: Warning design capacity
+		200,		// 6: Low design capacity
+		10,		// 7: granularity1
+		10,		// 8: granularity2
+		"",		// 9: Model number
+		"",		// A: Serial number
+		"",		// B: Battery Type
+		""		// C: OEM information
+	})
+
+	Name(BATI, Package()
+	{
+		0, // Battery State
+		   // Bit 0 - discharge
+		   // Bit 1 - charge
+		   // Bit 2 - critical state
+		0, // Battery present Rate
+		0, // Battery remaining capacity
+		0  // Battery present voltage
+	})
+
+	Method(_BIF, 0, NotSerialized)
+	{
+		Index(BATS, 0x01) = ^^SBRW(0x0B, 0x18) * 10
+		Index(BATS, 0x02) = ^^SBRW(0x0B, 0x10) * 10
+
+		Index(BATS, 0x04) = ^^SBRW(0x0B, 0x19)
+		Index(BATS, 0x09) = ^^SBRB(0x0B, 0x21)
+		Index(BATS, 0x0B) = ^^SBRB(0x0B, 0x22)
+		Index(BATS, 0x0C) = ^^SBRB(0x0B, 0x20)
+
+		Return(BATS)
+	}
+
+	Method(_STA, 0, NotSerialized)
+	{
+		If (^^SBRW(0x0A, 0x01) & 0x01) {
+			Return(0x1f)
+		} else {
+			Return(0x0f)
+		}
+	}
+
+	Method(_BST, 0, NotSerialized)
+	{
+		/* Check for battery presence.	*/
+		If (!(^^SBRW(0x0A, 0x01) & 0x01)) {
+			Return(Package(4) {
+				0,
+				0xFFFFFFFF,
+				0xFFFFFFFF,
+				0xFFFFFFFF
+			})
+		}
+
+		Local1 = ^^SBRW(0x0B, 0x09)
+		Index(BATI, 0x03) = Local1
+		Local0 = ^^SBRW(0x0B, 0x0A)
+
+		/* Sign-extend Local0.	*/
+		If (Local0 & 0x8000)
+		{
+			Local0 = ~Local0
+			Local0++
+			Local0 &= 0xFFFF
+		}
+
+		Local0 *= Local1
+		Index(BATI, 1) = Local0 / 1000
+		Index(BATI, 2) = ^^SBRW(0x0B, 0x0F) * 10
+		If (HPAC) {
+			If (!(^^SBRW(0x0B, 0x16) & 0x40)) {
+				Index(BATI, 0) = 2
+			} Else {
+				Index(BATI, 0) = 0
+			}
+		} Else {
+			Index(BATI, 0) = 1
+		}
+
+		Return(BATI)
+	}
+}
diff --git a/src/ec/apple/acpi/ec.asl b/src/ec/apple/acpi/ec.asl
new file mode 100644
index 0000000000..3adb7f6ab3
--- /dev/null
+++ b/src/ec/apple/acpi/ec.asl
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Device(EC)
+{
+	Name(_HID, EISAID("PNP0C09"))
+	Name(_UID, 0)
+
+	Name(_GPE, 0x17)
+	Mutex(ECLK, 0)
+
+	OperationRegion(ERAM, EmbeddedControl, 0x00, 0x100)
+
+	/* LID status change. */
+	Method(_Q20, 0, NotSerialized)
+	{
+		Notify(LID, 0x80)
+	}
+
+	/* AC status change. */
+	Method(_Q21, 0, NotSerialized)
+	{
+		Notify(AC, 0x80)
+	}
+
+	Method(_CRS, 0)
+	{
+		Name(ECMD, ResourceTemplate()
+		{
+			IO(Decode16, 0x62, 0x62, 1, 1)
+			IO(Decode16, 0x66, 0x66, 1, 1)
+		})
+		Return(ECMD)
+	}
+
+	Method(_PRW, 0, NotSerialized)
+	{
+		Return(Package () { 0x23, 0x04 })
+	}
+
+	Method(_INI, 0, NotSerialized)
+	{
+	}
+
+#include "battery.asl"
+}
diff --git a/src/ec/apple/acpi/lid.asl b/src/ec/apple/acpi/lid.asl
new file mode 100644
index 0000000000..ec91d8f106
--- /dev/null
+++ b/src/ec/apple/acpi/lid.asl
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Scope(\_SB.PCI0.LPCB.EC)
+{
+	Field(ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset(LIDS_OFFSET),
+		LIDS, 1,   /* Lid status */
+
+		Offset(WKLD_OFFSET),
+		WKLD, 1,   /* Lid wake */
+	}
+
+	Device(LID)
+	{
+		Name(_HID, "PNP0C0D")
+
+		Method(_LID, 0, NotSerialized)
+		{
+			Return(LIDS)
+		}
+
+		Method(_PRW, 0, NotSerialized)
+		{
+#if LIDS_OFFSET == 0x01
+			Return(Package() { 0x1d, 0x03 })
+#else
+			Return(Package() { 0x23, 0x04 })
+#endif
+		}
+
+		Method(_PSW, 1, NotSerialized)
+		{
+			if (Arg0) {
+				WKLD = 1
+			} else {
+				WKLD = 0
+			}
+		}
+	}
+}