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Enable only one i8042 port at initialization

This commit is contained in:
Ruihan Li 2025-11-29 12:25:03 +08:00 committed by Qingsong Chen
parent 3258a264de
commit f522bd72b2
1 changed files with 6 additions and 2 deletions
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8
kernel/comps/i8042/src/controller.rs
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@ -83,7 +83,6 @@ pub(super) fn init() -> Result<(), I8042ControllerError> {
controller.wait_and_send_command(Command::EnableFirstPort)?;
if let Err(err) = super::keyboard::init(&mut controller) {
log::warn!("i8042 keyboard initialization failed: {:?}", err);
controller.wait_and_send_command(Command::DisableFirstPort)?;
} else {
config.remove(Configuration::FIRST_PORT_CLOCK_DISABLED);
config.insert(
@ -91,17 +90,22 @@ pub(super) fn init() -> Result<(), I8042ControllerError> {
| Configuration::FIRST_PORT_TRANSLATION_ENABLED,
);
}
// Temporarily disable the first PS/2 port to avoid interference.
controller.wait_and_send_command(Command::DisableFirstPort)?;
controller.flush_output_buffer();
// Enable the second PS/2 port (mouse) if it exists.
if has_second_port {
controller.wait_and_send_command(Command::EnableSecondPort)?;
if let Err(err) = super::mouse::init(&mut controller) {
log::warn!("i8042 mouse initialization failed: {:?}", err);
controller.wait_and_send_command(Command::DisableSecondPort)?;
} else {
config.remove(Configuration::SECOND_PORT_CLOCK_DISABLED);
config.insert(Configuration::SECOND_PORT_INTERRUPT_ENABLED);
}
// Temporarily disable the second PS/2 port to avoid interference.
controller.wait_and_send_command(Command::DisableFirstPort)?;
controller.flush_output_buffer();
}
I8042_CONTROLLER.call_once(|| SpinLock::new(controller));