Add ACPI thermal interface to S76D

Change-Id: I1ada73d5a255074a2f628e18cc605e8dc6109c0e

src/ec/system76/ec/Kconfig

@@ -7,3 +7,8 @@ config EC_SYSTEM76_EC_COLOR_KEYBOARD
 	depends on EC_SYSTEM76_EC
 	bool
 	default n
+
+config EC_SYSTEM76_EC_DGPU
+	depends on EC_SYSTEM76_EC
+	bool
+	default n

src/ec/system76/ec/acpi/ec_ram.asl

@@ -8,6 +8,8 @@ Field (ERAM, ByteAcc, Lock, Preserve)
 	    ,   1,
 	LWKE,   1, // Lid wake
 		,   5,
+	Offset (0x07),
+	TMP1,	8, // CPU temperature
 	Offset (0x10),
 	ADP,    1, // AC adapter connected
 	    ,   1,
@@ -28,17 +30,17 @@ Field (ERAM, ByteAcc, Lock, Preserve)
     BCL0,   32,
 	Offset (0x68),
 	ECOS,   8, // Detected OS, 0 = no ACPI, 1 = ACPI but no driver, 2 = ACPI with driver
-	Offset (0xC7),
+	Offset (0xC8),
-	VGAT,   8, // GPU temperature (not implemented)
 	OEM1,   8,
 	OEM2,   8,
 	OEM3,   16,
 	OEM4,   8, // Extra SCI data
-	Offset (0xCE),
+	Offset (0xCD),
-	DUT1,   8, // Fan 1 duty (not implemented)
+	TMP2,   8, // GPU temperature
-	DUT2,   8, // Fan 2 duty (not implemented)
+	DUT1,   8, // Fan 1 duty
-	RPM1,   16, // Fan 1 RPM (not implemented)
+	DUT2,   8, // Fan 2 duty
-	RPM2,   16, // Fan 2 RPM (not implemented)
+	RPM1,   16, // Fan 1 RPM
+	RPM2,   16, // Fan 2 RPM
 	Offset (0xD9),
 	AIRP,   8, // Airplane mode LED
 	WINF,   8, // Enable ACPI brightness controls

src/ec/system76/ec/acpi/s76.asl

@@ -111,4 +111,57 @@ Device (S76D) {
 		}
 	}
 #endif // CONFIG(EC_SYSTEM76_EC_COLOR_KEYBOARD)
+
+	// Fan names
+	Method (NFAN, 0, Serialized) {
+		Return (Package (2) {
+			"CPU fan",
+#if CONFIG(EC_SYSTEM76_EC_DGPU)
+			"GPU fan",
+#endif // CONFIG(EC_SYSTEM76_EC_DGPU)
+		})
+	}
+
+	// Get fan duty and RPM as a single value
+	Method (GFAN, 1, Serialized) {
+		Local0 = 0
+		Local1 = 0
+		If (^^PCI0.LPCB.EC0.ECOK) {
+			If (Arg0 == 0) {
+				Local0 = ^^PCI0.LPCB.EC0.DUT1
+				Local1 = ^^PCI0.LPCB.EC0.RPM1
+			} ElseIf (Arg0 == 1) {
+				Local0 = ^^PCI0.LPCB.EC0.DUT2
+				Local1 = ^^PCI0.LPCB.EC0.RPM2
+			}
+		}
+		If (Local1 != 0) {
+			// 60 * (EC frequency / 120) / 2
+			Local1 = 2156250 / Local1
+		}
+		Return ((Local1 << 8) | Local0)
+	}
+
+	// Temperature names
+	Method (NTMP, 0, Serialized) {
+		Return (Package (2) {
+			"CPU temp",
+#if CONFIG(EC_SYSTEM76_EC_DGPU)
+			"GPU temp",
+#endif // CONFIG(EC_SYSTEM76_EC_DGPU)
+		})
+	}
+
+	// Get temperature
+	Method (GTMP, 1, Serialized) {
+		Local0 = 0;
+		If (^^PCI0.LPCB.EC0.ECOK) {
+			If (Arg0 == 0) {
+				Local0 = ^^PCI0.LPCB.EC0.TMP1
+			} ElseIf (Arg0 == 1) {
+				Local0 = ^^PCI0.LPCB.EC0.TMP2
+			}
+		}
+		Return (Local0)
+	}
 }

src/mainboard/system76/addw2/Kconfig

@@ -8,6 +8,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_SYSTEM76_DGPU
 	select EC_SYSTEM76_EC
 	select EC_SYSTEM76_EC_COLOR_KEYBOARD
+	select EC_SYSTEM76_EC_DGPU
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_SMI_HANDLER

src/mainboard/system76/bonw14/Kconfig

@@ -8,6 +8,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_SYSTEM76_DGPU
 	select EC_SYSTEM76_EC
 	select EC_SYSTEM76_EC_COLOR_KEYBOARD
+	select EC_SYSTEM76_EC_DGPU
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_SMI_HANDLER

src/mainboard/system76/gaze14/Kconfig

@@ -7,6 +7,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_SYSTEM76_DGPU
 	select EC_SYSTEM76_EC
 	select EC_SYSTEM76_EC_COLOR_KEYBOARD
+	select EC_SYSTEM76_EC_DGPU
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_SMI_HANDLER

src/mainboard/system76/gaze15/Kconfig

@@ -7,6 +7,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_SYSTEM76_DGPU
 	select EC_SYSTEM76_EC
 	select EC_SYSTEM76_EC_COLOR_KEYBOARD
+	select EC_SYSTEM76_EC_DGPU
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_SMI_HANDLER

src/mainboard/system76/oryp6/Kconfig

@@ -8,6 +8,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select DRIVERS_SYSTEM76_DGPU
 	select EC_SYSTEM76_EC
 	select EC_SYSTEM76_EC_COLOR_KEYBOARD
+	select EC_SYSTEM76_EC_DGPU
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_SMI_HANDLER