1 files changed, 170 insertions, 0 deletions
diff --git a/src/ec/purism/librem-ec/acpi/battery.asl b/src/ec/purism/librem-ec/acpi/battery.asl
new file mode 100644
index 0000000000..50aaf9ef9e
--- /dev/null
+++ b/src/ec/purism/librem-ec/acpi/battery.asl
@@ -0,0 +1,170 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+Device (BAT0)
+{
+	Name (_HID, EisaId ("PNP0C0A") /* Control Method Battery */)  // _HID: Hardware ID
+	Name (_UID, Zero)  // _UID: Unique ID
+	Name (_PCL, Package (0x01)  // _PCL: Power Consumer List
+	{
+		_SB
+	})
+	Name (BFCC, Zero)
+	Method (_STA, 0, NotSerialized)  // _STA: Status
+	{
+		If (^^PCI0.LPCB.EC0.ECOK)
+		{
+			If (^^PCI0.LPCB.EC0.BAT0)
+			{
+				Return (0x1F)
+			}
+			Else
+			{
+				Return (0x0F)
+			}
+		}
+		Else
+		{
+			Return (0x0F)
+		}
+	}
+
+	Name (PBIF, Package (0x0D)
+	{
+		One, // 0 - Power Unit
+		0xFFFFFFFF, // 1 - Design Capacity
+		0xFFFFFFFF, // 2 - Last Full Charge Capacity
+		One, // 3 - Battery Technology
+		0xFFFFFFFF, // 4 - Design Voltage
+		Zero, // 5 - Design Capacity of Warning
+		Zero, // 6 - Design Capacity of Low
+		0x40, // 7 - Battery Capacity Granularity 1
+		0x40, // 8 - Battery Capacity Granularity 2
+		" ", // 9 - Model Number
+		" ", // 10 - Serial Number
+		" ", // 11 - Battery Type
+		" " // 12 - OEM Information
+	})
+	Method (IVBI, 0, NotSerialized)
+	{
+		PBIF [1] = 0xFFFFFFFF
+		PBIF [2] = 0xFFFFFFFF
+		PBIF [4] = 0xFFFFFFFF
+		PBIF [9] = " "
+		PBIF [10] = " "
+		PBIF [11] = " "
+		PBIF [12] = " "
+		BFCC = Zero
+	}
+
+	Method (UPBI, 0, NotSerialized)
+	{
+		If (^^PCI0.LPCB.EC0.BAT0)
+		{
+			Local0 = (^^PCI0.LPCB.EC0.BDC0 & 0xFFFF)
+			PBIF [1] = Local0
+			Local0 = (^^PCI0.LPCB.EC0.BFC0 & 0xFFFF)
+			PBIF [2] = Local0
+			BFCC = Local0
+			Local0 = (^^PCI0.LPCB.EC0.BDV0 & 0xFFFF)
+			PBIF [4] = Local0
+			Local0 = (^^PCI0.LPCB.EC0.BCW0 & 0xFFFF)
+			PBIF [5] = Local0
+			Local0 = (^^PCI0.LPCB.EC0.BCL0 & 0xFFFF)
+			PBIF [6] = Local0
+			PBIF [9] = "BAT"
+			PBIF [10] = "0001"
+			PBIF [11] = "LION"
+			PBIF [12] = "Notebook"
+		}
+		Else
+		{
+			IVBI ()
+		}
+	}
+
+	Method (_BIF, 0, NotSerialized)  // _BIF: Battery Information
+	{
+		If (^^PCI0.LPCB.EC0.ECOK)
+		{
+			UPBI ()
+		}
+		Else
+		{
+			IVBI ()
+		}
+
+		Return (PBIF) /* \_SB_.BAT0.PBIF */
+	}
+
+	Name (PBST, Package (0x04)
+	{
+		Zero, // 0 - Battery state
+		0xFFFFFFFF, // 1 - Battery present rate
+		0xFFFFFFFF, // 2 - Battery remaining capacity
+		0xFFFFFFFF // 3 - Battery present voltage
+	})
+	Method (IVBS, 0, NotSerialized)
+	{
+		PBST [0] = Zero
+		PBST [1] = 0xFFFFFFFF
+		PBST [2] = 0xFFFFFFFF
+		PBST [3] = 0xFFFFFFFF
+	}
+
+	Method (UPBS, 0, NotSerialized)
+	{
+		If (^^PCI0.LPCB.EC0.BAT0)
+		{
+			Local0 = Zero
+			Local1 = Zero
+			If (^^AC.ACFG)
+			{
+				If (((^^PCI0.LPCB.EC0.BST0 & 0x02) == 0x02))
+				{
+					Local0 |= 0x02
+					Local1 = (^^PCI0.LPCB.EC0.BPR0 & 0xFFFF)
+				}
+			}
+			Else
+			{
+				Local0 |= One
+				Local1 = (^^PCI0.LPCB.EC0.BPR0 & 0xFFFF)
+			}
+
+			Local7 = (Local1 & 0x8000)
+			If ((Local7 == 0x8000))
+			{
+				Local1 ^= 0xFFFF
+			}
+
+			Local2 = (^^PCI0.LPCB.EC0.BRC0 & 0xFFFF)
+			Local3 = (^^PCI0.LPCB.EC0.BPV0 & 0xFFFF)
+			PBST [0] = Local0
+			PBST [1] = Local1
+			PBST [2] = Local2
+			PBST [3] = Local3
+			If ((BFCC != ^^PCI0.LPCB.EC0.BFC0))
+			{
+				Notify (BAT0, 0x81) // Information Change
+			}
+		}
+		Else
+		{
+			IVBS ()
+		}
+	}
+
+	Method (_BST, 0, NotSerialized)  // _BST: Battery Status
+	{
+		If (^^PCI0.LPCB.EC0.ECOK)
+		{
+			UPBS ()
+		}
+		Else
+		{
+			IVBS ()
+		}
+
+		Return (PBST) /* \_SB_.BAT0.PBST */
+	}
+}