mirror of
https://github.com/RGBCube/serenity
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3e1146d4b8
Some chromebooks don't support PS2 controller reset and ignore it. Other OSes in case of failed reset check by keyboard ID. Do the same
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021-2023, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Types.h>
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#include <Kernel/Bus/SerialIO/PS2Definitions.h>
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#include <Kernel/Debug.h>
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#include <Kernel/Devices/DeviceManagement.h>
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#include <Kernel/Devices/HID/Management.h>
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#include <Kernel/Devices/HID/PS2/KeyboardDevice.h>
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#include <Kernel/Devices/HID/ScanCodeEvent.h>
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#include <Kernel/Devices/TTY/ConsoleManagement.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Tasks/Scheduler.h>
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#include <Kernel/Tasks/WorkQueue.h>
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namespace Kernel {
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void PS2KeyboardDevice::handle_byte_read_from_serial_input(u8 byte)
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{
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u8 ch = byte & 0x7f;
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bool pressed = !(byte & 0x80);
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if (byte == 0xe0) {
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m_has_e0_prefix = true;
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return;
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}
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ScanCodeEvent event {};
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event.pressed = pressed;
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event.e0_prefix = m_has_e0_prefix;
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m_has_e0_prefix = false;
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dbgln_if(KEYBOARD_DEBUG, "Keyboard::handle_byte_read_from_serial_input: {:#02x} {}", ch, (pressed ? "down" : "up"));
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event.scan_code_value = ch;
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m_keyboard_device->handle_scan_code_input_event(event);
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}
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UNMAP_AFTER_INIT ErrorOr<NonnullOwnPtr<PS2KeyboardDevice>> PS2KeyboardDevice::try_to_initialize(SerialIOController const& serial_io_controller, SerialIOController::PortIndex port_index, KeyboardDevice const& keyboard_device)
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{
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auto device = TRY(adopt_nonnull_own_or_enomem(new (nothrow) PS2KeyboardDevice(serial_io_controller, port_index, keyboard_device)));
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TRY(device->initialize());
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return device;
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}
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UNMAP_AFTER_INIT ErrorOr<void> PS2KeyboardDevice::initialize()
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{
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ErrorOr<void> err = attached_controller().reset_device(attached_port_index());
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if (err.is_error()) {
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TRY(attached_controller().send_command(attached_port_index(), SerialIOController::DeviceCommand::GetDeviceID));
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ErrorOr<u8> res = attached_controller().read_from_device(attached_port_index());
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if (res.is_error()) {
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return err;
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}
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switch (res.value()) {
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// Regular and NCD Sun keyboards.
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case 0xab:
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case 0xac:
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// Trust keyboard, raw and translated
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case 0x2b:
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case 0x5d:
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// NMB SGI keyboard, raw and translated
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case 0x60:
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case 0x47:
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return {};
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}
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}
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return err;
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}
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// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices
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// are hot pluggable.
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UNMAP_AFTER_INIT PS2KeyboardDevice::PS2KeyboardDevice(SerialIOController const& serial_io_controller, SerialIOController::PortIndex port_index, KeyboardDevice const& keyboard_device)
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: SerialIODevice(serial_io_controller, port_index)
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, m_keyboard_device(keyboard_device)
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{
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}
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// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices
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// are hot pluggable.
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UNMAP_AFTER_INIT PS2KeyboardDevice::~PS2KeyboardDevice() = default;
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}
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