diff options
Diffstat (limited to 'src/ec/purism/librem/acpi/battery.asl')
| -rw-r--r-- | src/ec/purism/librem/acpi/battery.asl | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/ec/purism/librem/acpi/battery.asl b/src/ec/purism/librem/acpi/battery.asl new file mode 100644 index 0000000000..a090b7c2a8 --- /dev/null +++ b/src/ec/purism/librem/acpi/battery.asl @@ -0,0 +1,211 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Google Inc. + * + * 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. + */ + +Device (BAT) +{ + 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 */ + "S10", /* 0x09: Model Number */ + "", /* 0x0a: Serial Number */ + "LION", /* 0x0b: Battery Type */ + "TPS" /* 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 + "S10", // 0x10: Model Number + "", // 0x11: Serial Number + "LION", // 0x12: Battery Type + "TPS" // 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) + + /* Battery Capacity warning at 15% */ + Name (DWRN, 15) + + /* Battery Capacity low at 10% */ + Name (DLOW, 10) + + /* 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)) + + 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)) + + Return (PBIX) + } + + Method (_BST, 0, Serialized) + { + /* + * 0: BATTERY STATE + * + * bit 0 = discharging + * bit 1 = charging + * bit 2 = critical level + */ + + /* Check if AC is present */ + If (ACEX) { + /* Read battery status from EC */ + Store (BSTS, Local0) + } Else { + /* Always discharging when on battery power */ + Store (0x01, Local0) + } + + /* Check for critical battery level */ + If (BFCR) { + Or (Local0, 0x04, Local0) + } + Store (Local0, Index (PBST, 0)) + + /* Notify if battery state has changed since last time */ + If (LNotEqual (Local0, BSTP)) { + Store (Local0, BSTP) + Notify (BAT, 0x80) + } + + /* + * 1: BATTERY PRESENT RATE + */ + Store (BTPR, Local1) + If (And (Local1, 0x8000)) { + And (Not (Local1), 0x7FFF, Local0) + Increment (Local0) + } Else { + And (Local1, 0x7FFF, Local0) + } + + /* + * 2: BATTERY REMAINING CAPACITY + */ + Store (BTRA, Local0) + If (LAnd (BFWK, LAnd (ACEX, LNot (BSTS)))) { + Store (BTDF, Local1) + + /* See if within ~6% of full */ + ShiftRight (Local1, 4, Local2) + If (LAnd (LGreater (Local0, Subtract (Local1, Local2)), + LLess (Local0, Add (Local1, Local2)))) + { + Store (Local1, Local0) + } + } + Store (Local0, Index (PBST, 2)) + + /* + * 3: BATTERY PRESENT VOLTAGE + */ + Store (BTVO, Index (PBST, 3)) + + Return (PBST) + } +} |