Update ACPI in system76 cfl-h mainboard

src/mainboard/system76/cfl-h/Kconfig

@@ -14,6 +14,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select INTEL_LPSS_UART_FOR_CONSOLE
 #	select MAINBOARD_HAS_SPI_TPM_CR50
 #	select MAINBOARD_HAS_TPM2
+	select NO_UART_ON_SUPERIO
 	select SOC_INTEL_CANNONLAKE_PCH_H
 	select SOC_INTEL_COFFEELAKE
 	select SOC_INTEL_COMMON_ACPI_EC_PTS_WAK

src/mainboard/system76/cfl-h/acpi/ec.asl

@@ -40,10 +40,10 @@ Device (EC0)
     {
         Debug = Concatenate("EC: _REG", Concatenate(ToHexString(Arg0), Concatenate(" ", ToHexString(Arg1))))
         If (((Arg0 == 0x03) && (Arg1 == One))) {
-            // Enable software touchpad lock and airplane mode keys
+            // Enable hardware touchpad lock, airplane mode, and keyboard backlight keys
-            ECOS = 2
+            ECOS = 1
 
-            // Enable software backlight keys
+            // Enable software display brightness keys
             WINF = 1
 
             // Set current AC state
@@ -56,12 +56,16 @@ Device (EC0)
 
             // EC is now available
             ECOK = Arg1
+
+            // Reset System76 Device
+            ^^^^S76D.RSET()
         }
     }
 
     Method (PTS, 1, Serialized) {
         Debug = Concatenate("EC: PTS: ", ToHexString(Arg0))
         If (ECOK) {
+            // Clear wake cause
             WFNO = Zero
         }
     }
@@ -71,11 +75,19 @@ Device (EC0)
         If (ECOK) {
             // 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)
+
+            Sleep (1000)
+
+            // Reset System76 Device
+            ^^^^S76D.RSET()
         }
     }
 
@@ -134,8 +146,11 @@ Device (EC0)
     Method (_Q14, 0, NotSerialized) // Airplane Mode
     {
         Debug = "EC: Airplane Mode"
+        // Only send HIDD message when hardware airplane mode not in use
+        If (ECOS == 2) {
             ^^^^HIDD.HPEM (8)
         }
+    }
 
     Method (_Q15, 0, NotSerialized) // Suspend Button
     {

src/mainboard/system76/cfl-h/acpi/mainboard.asl

@@ -20,6 +20,7 @@ Scope (\_SB) {
     #include "hid.asl"
     #include "lid.asl"
     #include "s76.asl"
+    #include "sleep.asl"
 }
 
 Scope (_GPE) {

src/mainboard/system76/cfl-h/acpi/s76.asl

@@ -23,6 +23,39 @@ Device (S76D) {
     Name (_HID, "17761776")
     Name (_UID, 0)
 
+    Method (RSET, 0, Serialized) {
+        Debug = "S76D: RSET"
+        SAPL(0)
+        SKBL(0)
+        #if COLOR_KEYBOARD
+            SKBC(0xFFFFFF)
+        #endif
+    }
+
+    Method (INIT, 0, Serialized) {
+        Debug = "S76D: INIT"
+        RSET()
+        If (^^PCI0.LPCB.EC0.ECOK) {
+            // Set flags to use software control
+            ^^PCI0.LPCB.EC0.ECOS = 2
+            Return (0)
+        } Else {
+            Return (1)
+        }
+    }
+
+    Method (FINI, 0, Serialized) {
+        Debug = "S76D: FINI"
+        RSET()
+        If (^^PCI0.LPCB.EC0.ECOK) {
+            // Set flags to use hardware control
+            ^^PCI0.LPCB.EC0.ECOS = 1
+            Return (0)
+        } Else {
+            Return (1)
+        }
+    }
+
     // Get Airplane LED
     Method (GAPL, 0, Serialized) {
         If (^^PCI0.LPCB.EC0.ECOK) {

src/mainboard/system76/cfl-h/acpi/sleep.asl

@@ -0,0 +1,24 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019 System76
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/* Method called from _PTS prior to enter sleep state */
+Method (MPTS, 1) {
+	\_SB.PCI0.LPCB.EC0.PTS (Arg0)
+}
+
+/* Method called from _WAK prior to wakeup */
+Method (MWAK, 1) {
+	\_SB.PCI0.LPCB.EC0.WAK (Arg0)
+}