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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
*
* 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.
*/
// Scope (EC0)
Device (BAT0)
{
Name (_HID, EISAID ("PNP0C0A"))
Name (_UID, 1)
Name (_PCL, Package () { \_SB })
Name (PBIF, Package () {
0x00000001, // 0x00: Power Unit: mAh
0xFFFFFFFF, // 0x01: Design Capacity
0xFFFFFFFF, // 0x02: Last Full Charge Capacity
0x00000001, // 0x03: Battery Technology: Rechargeable
0xFFFFFFFF, // 0x04: Design Voltage
0x00000003, // 0x05: Design Capacity of Warning
0xFFFFFFFF, // 0x06: Design Capacity of Low
0x00000001, // 0x07: Capacity Granularity 1
0x00000001, // 0x08: Capacity Granularity 2
"", // 0x09: Model Number
"", // 0x0a: Serial Number
"LION", // 0x0b: Battery Type
"" // 0x0c: OEM Information
})
Name (PBIX, Package () {
0x00000000, // 0x00: Revision
0x00000001, // 0x01: Power Unit: mAh
0xFFFFFFFF, // 0x02: Design Capacity
0xFFFFFFFF, // 0x03: Last Full Charge Capacity
0x00000001, // 0x04: Battery Technology: Rechargeable
0xFFFFFFFF, // 0x05: Design Voltage
0x00000003, // 0x06: Design Capacity of Warning
0xFFFFFFFF, // 0x07: Design Capacity of Low
0x00000000, // 0x08: Cycle Count
0x00018000, // 0x09: Measurement Accuracy (98.3%?)
0x000001F4, // 0x0a: Max Sampling Time (500ms)
0x0000000a, // 0x0b: Min Sampling Time (10ms)
0xFFFFFFFF, // 0x0c: Max Averaging Interval
0xFFFFFFFF, // 0x0d: Min Averaging Interval
0x00000001, // 0x0e: Capacity Granularity 1
0x00000001, // 0x0f: Capacity Granularity 2
"", // 0x10 Model Number
"", // 0x11: Serial Number
"LION", // 0x12: Battery Type
"" // 0x13: OEM Information
})
Name (PBST, Package () {
0x00000000, // 0x00: Battery State
0xFFFFFFFF, // 0x01: Battery Present Rate
0xFFFFFFFF, // 0x02: Battery Remaining Capacity
0xFFFFFFFF, // 0x03: Battery Present Voltage
})
Name (BSTP, Zero)
// Workaround for full battery status, enabled by default
Name (BFWK, One)
// Method to enable full battery workaround
Method (BFWE)
{
Store (One, BFWK)
}
// Method to disable full battery workaround
Method (BFWD)
{
Store (Zero, BFWK)
}
Method (_STA, 0, Serialized)
{
If (BTEX) {
Return (0x1F)
} Else {
Return (0x0F)
}
}
Method (_BIF, 0, Serialized)
{
// Last Full Charge Capacity
Store (BTDF, Index (PBIF, 2))
// Design Voltage
Store (BTDV, Index (PBIF, 4))
// Design Capacity
Store (BTDA, Local0)
Store (Local0, Index (PBIF, 1))
// Design Capacity of Warning
Divide (Multiply (Local0, DWRN), 100, , Local2)
Store (Local2, Index (PBIF, 5))
// Design Capacity of Low
Divide (Multiply (Local0, DLOW), 100, , Local2)
Store (Local2, Index (PBIF, 6))
// Get battery info from mainboard
Store (ToString(BMOD), Index (PBIF, 9))
Store (ToString(BSER), Index (PBIF, 10))
Store (ToString(BMFG), Index (PBIF, 12))
Return (PBIF)
}
Method (_BIX, 0, Serialized)
{
// Last Full Charge Capacity
Store (BTDF, Index (PBIX, 3))
// Design Voltage
Store (BTDV, Index (PBIX, 5))
// Design Capacity
Store (BTDA, Local0)
Store (Local0, Index (PBIX, 2))
// Design Capacity of Warning
Divide (Multiply (Local0, DWRN), 100, , Local2)
Store (Local2, Index (PBIX, 6))
// Design Capacity of Low
Divide (Multiply (Local0, DLOW), 100, , Local2)
Store (Local2, Index (PBIX, 7))
// Cycle Count
Store (BTCC, Index (PBIX, 8))
// Get battery info from mainboard
Store (ToString(BMOD), Index (PBIX, 16))
Store (ToString(BSER), Index (PBIX, 17))
Store (ToString(BMFG), Index (PBIX, 19))
Return (PBIX)
}
Method (_BST, 0, Serialized)
{
//
// 0: BATTERY STATE
//
// bit 0 = discharging
// bit 1 = charging
// bit 2 = critical level
//
Store (Zero, Local1)
// Check if AC is present
If (ACEX) {
If (BFCG) {
Store (0x02, Local1)
} ElseIf (BFDC) {
Store (0x01, Local1)
}
} Else {
// Always discharging when on battery power
Store (0x01, Local1)
}
// Check for critical battery level
If (BFCR) {
Or (Local1, 0x04, Local1)
}
Store (Local1, Index (PBST, 0))
// Notify if battery state has changed since last time
If (LNotEqual (Local1, BSTP)) {
Store (Local1, BSTP)
Notify (BAT0, 0x80)
}
//
// 1: BATTERY PRESENT RATE
//
Store (BTPR, Index (PBST, 1))
//
// 2: BATTERY REMAINING CAPACITY
//
Store (BTRA, Local1)
If (LAnd (BFWK, LAnd (ACEX, LNot (LAnd (BFDC, BFCG))))) {
// 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
Store (BTDF, Local2)
// See if within ~6% of full
ShiftRight (Local2, 4, Local3)
If (LAnd (LGreater (Local1, Subtract (Local2, Local3)),
LLess (Local1, Add (Local2, Local3))))
{
Store (Local2, Local1)
}
}
Store (Local1, Index (PBST, 2))
//
// 3: BATTERY PRESENT VOLTAGE
//
Store (BTVO, Index (PBST, 3))
Return (PBST)
}
}
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