Stephen HorvathandPhyxionNL
b02fc4c4cf
* Begin CrOS implementation for Framework Laptops * CrOS: Talk directly to the EC, instead of through ACPI * Add a few Framework models * Remove early Framework models These have a different EC, and don't currently work * Migrate CrOS ECs to PawnIO * Implement EcCommand and read sensor names * Add more Framework models * Add some error handling * Misc --------- Co-authored-by: PhyxionNL <7643972+PhyxionNL@users.noreply.github.com>
97 lines
3.9 KiB
C#
97 lines
3.9 KiB
C#
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
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// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Copyright (C) LibreHardwareMonitor and Contributors.
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// All Rights Reserved.
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using System.Collections.Generic;
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namespace LibreHardwareMonitor.Hardware.Motherboard.Lpc.EC;
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public class ChromeOSEmbeddedController : EmbeddedController
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{
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private const byte EC_FAN_SPEED_ENTRIES = 4;
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private const ushort EC_FAN_SPEED_NOT_PRESENT = 0xffff;
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private const byte EC_MEMMAP_FAN = 0x10;
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private const byte EC_MEMMAP_TEMP_SENSOR = 0x00;
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private const byte EC_MEMMAP_TEMP_SENSOR_B = 0x18;
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private const byte EC_TEMP_SENSOR_B_ENTRIES = 8;
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private const byte EC_TEMP_SENSOR_ENTRIES = 16;
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private const byte EC_TEMP_SENSOR_NOT_PRESENT = 0xff;
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/*
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* The offset of temperature value stored in mapped memory. This allows
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* reporting a temperature range of 200K to 454K = -73C to 181C.
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*/
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private const byte EC_TEMP_SENSOR_OFFSET = 200;
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public ChromeOSEmbeddedController(IEnumerable<EmbeddedControllerSource> sources, ISettings settings) : base(sources, settings)
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{ }
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public static ChromeOSEmbeddedController Create(ISettings settings)
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{
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List<EmbeddedControllerSource> sources = [];
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using ChromeOSEmbeddedControllerIO embeddedControllerIO = new();
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// Copy the first 0x20 bytes of the EC memory map
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byte[] data = embeddedControllerIO.ReadMemmap(0x00, 0x20);
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for (int i = 0; i < EC_TEMP_SENSOR_ENTRIES; i++)
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{
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byte temp = data[EC_MEMMAP_TEMP_SENSOR + i];
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if (temp == EC_TEMP_SENSOR_NOT_PRESENT)
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{
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break;
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}
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string sensorName = embeddedControllerIO.TempSensorGetName((byte)i);
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sources.Add(new EmbeddedControllerSource(sensorName,
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SensorType.Temperature,
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(ushort)(EC_MEMMAP_TEMP_SENSOR + i),
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offset: EC_TEMP_SENSOR_OFFSET - 273,
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blank: EC_TEMP_SENSOR_NOT_PRESENT));
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}
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for (int i = 0; i < EC_FAN_SPEED_ENTRIES; i++)
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{
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ushort fan = (ushort)(data[EC_MEMMAP_FAN + i * 2] | (data[EC_MEMMAP_FAN + i * 2 + 1] << 8));
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if (fan == EC_FAN_SPEED_NOT_PRESENT)
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{
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break;
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}
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sources.Add(new EmbeddedControllerSource("Fan " + (i + 1),
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SensorType.Fan,
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(ushort)(EC_MEMMAP_FAN + i * 2),
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2,
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blank: EC_FAN_SPEED_NOT_PRESENT,
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isLittleEndian: true));
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}
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for (int i = 0; i < EC_TEMP_SENSOR_B_ENTRIES; i++)
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{
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byte temp = data[EC_MEMMAP_TEMP_SENSOR_B + i];
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if (temp == EC_TEMP_SENSOR_NOT_PRESENT)
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{
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break;
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}
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string sensorName = embeddedControllerIO.TempSensorGetName((byte)(i + EC_TEMP_SENSOR_ENTRIES));
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sources.Add(new EmbeddedControllerSource(sensorName,
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SensorType.Temperature,
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(ushort)(EC_MEMMAP_TEMP_SENSOR_B + i),
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offset: EC_TEMP_SENSOR_OFFSET - 273,
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blank: EC_TEMP_SENSOR_NOT_PRESENT));
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}
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return new ChromeOSEmbeddedController(sources, settings);
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}
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protected override IEmbeddedControllerIO AcquireIOInterface()
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{
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return new ChromeOSEmbeddedControllerIO();
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}
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}
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