1 files changed, 228 insertions, 0 deletions
diff --git a/src/mainboard/system76/kbl-u/acpi/ec.asl b/src/mainboard/system76/kbl-u/acpi/ec.asl
new file mode 100644
index 0000000000..de25eca129
--- /dev/null
+++ b/src/mainboard/system76/kbl-u/acpi/ec.asl
@@ -0,0 +1,228 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Device (EC0)
+{
+	Name (_HID, EisaId ("PNP0C09") /* Embedded Controller Device */)  // _HID: Hardware ID
+	Name (_GPE, 0x50 /* GPP_E16 */)  // _GPE: General Purpose Events
+	Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
+	{
+		IO (Decode16,
+			0x0062,             // Range Minimum
+			0x0062,             // Range Maximum
+			0x00,               // Alignment
+			0x01,               // Length
+			)
+		IO (Decode16,
+			0x0066,             // Range Minimum
+			0x0066,             // Range Maximum
+			0x00,               // Alignment
+			0x01,               // Length
+			)
+	})
+
+	#include "acpi/ec_ram.asl"
+
+	Name (ECOK, Zero)
+	Method (_REG, 2, Serialized)  // _REG: Region Availability
+	{
+		Debug = Concatenate("EC: _REG", Concatenate(ToHexString(Arg0), Concatenate(" ", ToHexString(Arg1))))
+		If ((Arg0 == 0x03) && (Arg1 == One)) {
+			// Enable hardware touchpad lock, airplane mode, and keyboard backlight keys
+			ECOS = 1
+
+			// Enable software display brightness keys
+			WINF = 1
+
+			// Set current AC state
+			^^^^AC.ACFG = ADP
+			// Update battery information and status
+			^^^^BAT0.UPBI()
+			^^^^BAT0.UPBS()
+
+			// Notify of changes
+			Notify(^^^^AC, Zero)
+			Notify(^^^^BAT0, Zero)
+
+			PNOT ()
+
+			// EC is now available
+			ECOK = Arg1
+
+			// Reset System76 Device
+			^^^^S76D.RSET()
+		}
+	}
+
+	Name (S3OS, Zero)
+	Method (PTS, 1, Serialized) {
+		Debug = Concatenate("EC: PTS: ", ToHexString(Arg0))
+		If (ECOK) {
+			// Save ECOS during sleep
+			S3OS = ECOS
+
+			// Clear wake cause
+			WFNO = Zero
+		}
+	}
+
+	Method (WAK, 1, Serialized) {
+		Debug = Concatenate("EC: WAK: ", ToHexString(Arg0))
+		If (ECOK) {
+			// Restore ECOS after sleep
+			ECOS = S3OS
+
+			// Set current AC state
+			^^^^AC.ACFG = ADP
+
+			// Update battery information and status
+			^^^^BAT0.UPBI()
+			^^^^BAT0.UPBS()
+
+			// Notify of changes
+			Notify(^^^^AC, Zero)
+			Notify(^^^^BAT0, Zero)
+
+			// Reset System76 Device
+			^^^^S76D.RSET()
+		}
+	}
+
+	Method (_Q0A, 0, NotSerialized) // Touchpad Toggle
+	{
+		Debug = "EC: Touchpad Toggle"
+	}
+
+	Method (_Q0B, 0, NotSerialized) // Screen Toggle
+	{
+		Debug = "EC: Screen Toggle"
+	}
+
+	Method (_Q0C, 0, NotSerialized)  // Mute
+	{
+		Debug = "EC: Mute"
+	}
+
+	Method (_Q0D, 0, NotSerialized) // Keyboard Backlight
+	{
+		Debug = "EC: Keyboard Backlight"
+	}
+
+	Method (_Q0E, 0, NotSerialized) // Volume Down
+	{
+		Debug = "EC: Volume Down"
+	}
+
+	Method (_Q0F, 0, NotSerialized) // Volume Up
+	{
+		Debug = "EC: Volume Up"
+	}
+
+	Method (_Q10, 0, NotSerialized) // Switch Video Mode
+	{
+		Debug = "EC: Switch Video Mode"
+	}
+
+	Method (_Q11, 0, NotSerialized) // Brightness Down
+	{
+		Debug = "EC: Brightness Down"
+		if (^^^^HIDD.HRDY) {
+			^^^^HIDD.HPEM (20)
+		}
+	}
+
+	Method (_Q12, 0, NotSerialized) // Brightness Up
+	{
+		Debug = "EC: Brightness Up"
+		if (^^^^HIDD.HRDY) {
+			^^^^HIDD.HPEM (19)
+		}
+	}
+
+	Method (_Q13, 0, NotSerialized) // Camera Toggle
+	{
+		Debug = "EC: Camera Toggle"
+	}
+
+	Method (_Q14, 0, NotSerialized) // Airplane Mode
+	{
+		Debug = "EC: Airplane Mode"
+		if (^^^^HIDD.HRDY) {
+			^^^^HIDD.HPEM (8)
+		}
+		// TODO: hardware airplane mode
+	}
+
+	Method (_Q15, 0, NotSerialized) // Suspend Button
+	{
+		Debug = "EC: Suspend Button"
+		Notify (SLPB, 0x80)
+	}
+
+	Method (_Q16, 0, NotSerialized) // AC Detect
+	{
+		Debug = "EC: AC Detect"
+		^^^^AC.ACFG = ADP
+		Notify (AC, 0x80) // Status Change
+		If (BAT0)
+		{
+			Notify (^^^^BAT0, 0x81) // Information Change
+			Notify (^^^^BAT0, 0x80) // Status Change
+		}
+	}
+
+	Method (_Q17, 0, NotSerialized)  // BAT0 Update
+	{
+		Debug = "EC: BAT0 Update (17)"
+		Notify (^^^^BAT0, 0x81) // Information Change
+	}
+
+	Method (_Q19, 0, NotSerialized)  // BAT0 Update
+	{
+		Debug = "EC: BAT0 Update (19)"
+		Notify (^^^^BAT0, 0x81) // Information Change
+	}
+
+	Method (_Q1B, 0, NotSerialized) // Lid Close
+	{
+		Debug = "EC: Lid Close"
+		Notify (LID0, 0x80)
+	}
+
+	Method (_Q1C, 0, NotSerialized) // Thermal Trip
+	{
+		Debug = "EC: Thermal Trip"
+		/* TODO
+		Notify (\_TZ.TZ0, 0x81) // Thermal Trip Point Change
+		Notify (\_TZ.TZ0, 0x80) // Thermal Status Change
+		*/
+	}
+
+	Method (_Q1D, 0, NotSerialized) // Power Button
+	{
+		Debug = "EC: Power Button"
+		Notify (PWRB, 0x80)
+	}
+
+	Method (_Q50, 0, NotSerialized) // Other Events
+	{
+		Local0 = OEM4
+		If (Local0 == 0x8A) {
+			Debug = "EC: White Keyboard Backlight"
+			Notify (^^^^S76D, 0x80)
+		} ElseIf (Local0 == 0x9F) {
+			Debug = "EC: Color Keyboard Toggle"
+			Notify (^^^^S76D, 0x81)
+		} ElseIf (Local0 == 0x81) {
+			Debug = "EC: Color Keyboard Down"
+			Notify (^^^^S76D, 0x82)
+		} ElseIf (Local0 == 0x82) {
+			Debug = "EC: Color Keyboard Up"
+			Notify (^^^^S76D, 0x83)
+		} ElseIf (Local0 == 0x80) {
+			Debug = "EC: Color Keyboard Color Change"
+			Notify (^^^^S76D, 0x84)
+		} Else {
+			Debug = Concatenate("EC: Other: ", ToHexString(Local0))
+		}
+	}
+}