c285b30b7d
Change-Id: I4b0a3073815ec8d98c2d23cd745f027517b6fa42 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: https://review.coreboot.org/13619 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
154 lines
3.6 KiB
Plaintext
154 lines
3.6 KiB
Plaintext
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2011-2012 The Chromium OS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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// Scope (EC0)
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Device (BATX)
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{
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Name (_HID, EISAID ("PNP0C0A"))
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Name (_UID, 1)
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Name (_PCL, Package () { \_SB })
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Name (PBIF, Package () {
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0x00000001, // Power Unit: mAh
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0xFFFFFFFF, // Design Capacity
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0xFFFFFFFF, // Last Full Charge Capacity
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0x00000001, // Battery Technology: Rechargeable
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0xFFFFFFFF, // Design Voltage
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0x00000003, // Design Capacity of Warning
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0xFFFFFFFF, // Design Capacity of Low
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0x00000001, // Capacity Granularity 1
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0x00000001, // Capacity Granularity 2
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"", // Model Number
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"", // Serial Number
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"LION", // Battery Type
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"" // OEM Information
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})
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Name (PBST, Package () {
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0x00000000, // Battery State
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0xFFFFFFFF, // Battery Present Rate
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0xFFFFFFFF, // Battery Remaining Capacity
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0xFFFFFFFF, // Battery Present Voltage
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})
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Name (BTNM, Zero) // Battery number
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// Workaround for full battery status, enabled by default
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Name (BFWK, One)
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// Method to enable full battery workaround
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Method (BFWE)
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{
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Store (One, BFWK)
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}
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// Method to disable full battery workaround
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Method (BFWD)
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{
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Store (Zero, BFWK)
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}
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Method (_STA, 0, Serialized)
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{
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If (BOL0) {
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Return (0x1F)
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} Else {
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Return (0x0F)
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}
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}
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Method (_BIF, 0, Serialized)
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{
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// Update fields from EC
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Store (BAM0, Index (PBIF, 0))
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Store (BDC0, Index (PBIF, 1))
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Store (BFC0, Index (PBIF, 2))
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Store (BDV0, Index (PBIF, 4))
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Divide(BFC0, 0x64, , Local1)
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Multiply(Local1, 0x0A, Local1)
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Store(Local1, Index(PBIF, 5))
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Divide(BFC0, 0x64, , Local1)
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Multiply(Local1, 0x03, Local1)
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Store (Local1, Index (PBIF, 6))
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Store (ToString(BATD), Index (PBIF, 9)) // model
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Store (ToHexString(BSN0), Index (PBIF, 10)) // serial
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Store (ToString(BMFN), Index (PBIF, 12)) // venor
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Store(BDN0, BTNM) // Save the battery number
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Return (PBIF)
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}
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Method (_BST, 0, Serialized)
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{
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//
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// 0: BATTERY STATE
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//
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// bit 0 = discharging
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// bit 1 = charging
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// bit 2 = critical level
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//
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// Get battery state from EC and save it for the charging workaround
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Store (BST0, Local0)
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Store (Local0, Index (PBST, 0))
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//
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// 1: BATTERY PRESENT RATE/CURRENT
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//
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Store (BAC0, Local1)
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Subtract(0xFFFF, Local1, Local1)
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Store (Local1, Index (PBST, 1))
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//
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// 2: BATTERY REMAINING CAPACITY
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//
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Multiply(BFC0, GAU0, Local1)
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Divide(Local1, 0x64, Local2, Local1)
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If (LAnd (BFWK, LAnd (ADPT, LNot (Local0)))) {
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// On AC power and battery is neither charging
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// nor discharging. Linux expects a full battery
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// to report same capacity as last full charge.
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// https://bugzilla.kernel.org/show_bug.cgi?id=12632
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Store (GAU0, Local2)
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// See if within ~3% of full
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ShiftRight (Local2, 5, Local3)
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If (LAnd (LGreater (Local1, Subtract (Local2, Local3)),
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LLess (Local1, Add (Local2, Local3))))
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{
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Store (Local2, Local1)
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}
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}
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Store (Local1, Index (PBST, 2))
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//
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// 3: BATTERY PRESENT VOLTAGE
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//
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Store (BPV0, Index (PBST, 3))
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// Check the Battery Number
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If(LNotEqual(BDN0, BTNM)) {
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Notify(BATX, 0x81)
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}
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Return (PBST)
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}
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}
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