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/* SPDX-License-Identifier: GPL-2.0-only */
// Scope (EC0)
Device (BATX)
{
Name (_HID, EISAID ("PNP0C0A"))
Name (_UID, 1)
Name (_PCL, Package () { \_SB })
Name (PBIF, Package () {
0x00000001, // Power Unit: mAh
0xFFFFFFFF, // Design Capacity
0xFFFFFFFF, // Last Full Charge Capacity
0x00000001, // Battery Technology: Rechargeable
0xFFFFFFFF, // Design Voltage
0x00000003, // Design Capacity of Warning
0xFFFFFFFF, // Design Capacity of Low
0x00000001, // Capacity Granularity 1
0x00000001, // Capacity Granularity 2
"", // Model Number
"", // Serial Number
"LION", // Battery Type
"" // OEM Information
})
Name (PBST, Package () {
0x00000000, // Battery State
0xFFFFFFFF, // Battery Present Rate
0xFFFFFFFF, // Battery Remaining Capacity
0xFFFFFFFF, // Battery Present Voltage
})
Name (BTNM, Zero) // Battery number
// Workaround for full battery status, enabled by default
Name (BFWK, One)
// Method to enable full battery workaround
Method (BFWE)
{
BFWK = 1
}
// Method to disable full battery workaround
Method (BFWD)
{
BFWK = 0
}
Method (_STA, 0, Serialized)
{
If (BOL0) {
Return (0x1F)
} Else {
Return (0x0F)
}
}
Method (_BIF, 0, Serialized)
{
// Update fields from EC
PBIF [0] = BAM0
PBIF [1] = BDC0
PBIF [2] = BFC0
PBIF [4] = BDV0
Local1 = BFC0 / 100
Local1 *= 10
PBIF [5] = Local1
Local1 = BFC0 / 100
Local1 *= 3
PBIF [6] = Local1
PBIF [9] = ToString (Concatenate (BATD, 0x00)) // model
PBIF [10] = ToHexString (BSN0) // serial
PBIF [12] = ToString (BMFN) // vendor
BTNM = BDN0 // Save the battery number
Return (PBIF)
}
Method (_BST, 0, Serialized)
{
//
// 0: BATTERY STATE
//
// bit 0 = discharging
// bit 1 = charging
// bit 2 = critical level
//
// Get battery state from EC and save it for the charging workaround
Local0 = BST0
PBST [0] = Local0
//
// 1: BATTERY PRESENT RATE/CURRENT
//
Local1 = BAC0
Local1 = 0xFFFF - Local1
PBST [1] = Local1
//
// 2: BATTERY REMAINING CAPACITY
//
Local1 = BFC0 * GAU0
Local2 = Local1 % 100
Local1 /= 100
If (BFWK && ADPT && !Local0) {
// On AC power and battery is neither charging
// nor discharging. Linux expects a full battery
// to report same capacity as last full charge.
// https://bugzilla.kernel.org/show_bug.cgi?id=12632
Local2 = GAU0
// See if within ~3% of full
Local3 = Local2 >> 5
If ((Local1 > (Local2 - Local3)) && (Local1 < (Local2 + Local3)))
{
Local1 = Local2
}
}
PBST [2] = Local1
//
// 3: BATTERY PRESENT VOLTAGE
//
PBST [3] = BPV0
// Check the Battery Number
If(BDN0 != BTNM) {
Notify(BATX, 0x81)
}
Return (PBST)
}
}
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