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Kernel: Detect PS2 keyboards on some chromebooks properly

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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
This commit is contained in:
Vladimir Serbinenko 2023-07-22 19:41:50 +02:00 • committed by Andrew Kaster
parent 160609d80a
commit 3e1146d4b8
1 changed files with 23 additions and 1 deletions
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24
Kernel/Devices/HID/PS2/KeyboardDevice.cpp
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@ -47,7 +47,29 @@ UNMAP_AFTER_INIT ErrorOr<NonnullOwnPtr<PS2KeyboardDevice>> PS2KeyboardDevice::tr
UNMAP_AFTER_INIT ErrorOr<void> PS2KeyboardDevice::initialize()
{
return attached_controller().reset_device(attached_port_index());
ErrorOr<void> err = attached_controller().reset_device(attached_port_index());
if (err.is_error()) {
TRY(attached_controller().send_command(attached_port_index(), SerialIOController::DeviceCommand::GetDeviceID));
ErrorOr<u8> res = attached_controller().read_from_device(attached_port_index());
if (res.is_error()) {
return err;
}
switch (res.value()) {
// Regular and NCD Sun keyboards.
case 0xab:
case 0xac:
// Trust keyboard, raw and translated
case 0x2b:
case 0x5d:
// NMB SGI keyboard, raw and translated
case 0x60:
case 0x47:
return {};
}
}
return err;
}
// FIXME: UNMAP_AFTER_INIT might not be correct, because in practice PS/2 devices