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[Bug] Restore usb suspend wakeup delay (#21676)

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* Respect USB_SUSPEND_WAKEUP_DELAY on wakeup

This delay wasn't honored after removing `restart_usb_driver` from the
suspend and wakeup handling. It is now re-introduced in the appropriate
spot, namely after issuing a remote wakeup to a sleeping host.

* Remove old, unused and commented testing code
This commit is contained in:
Stefan Kerkmann
2023-08-03 00:42:57 +02:00
committed by GitHub
parent d232f60c01
commit e8e989fd7a
2 changed files with 14 additions and 44 deletions
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27
tmk_core/protocol/chibios/usb_main.c
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@ -784,34 +784,19 @@ void init_usb_driver(USBDriver *usbp) {
#endif
}
/*
* Activates the USB driver and then the USB bus pull-up on D+.
* Note, a delay is inserted in order to not have to disconnect the cable
* after a reset.
*/
usbDisconnectBus(usbp);
usbStop(usbp);
wait_ms(50);
usbStart(usbp, &usbcfg);
usbConnectBus(usbp);
restart_usb_driver(usbp);
chVTObjectInit(&keyboard_idle_timer);
}
/** @brief Restarts the USB driver and emulates a physical bus reconnection.
* Note that the bus reconnection is MCU and even board specific, so it might
* be a NOP on some hardware platforms.
*/
__attribute__((weak)) void restart_usb_driver(USBDriver *usbp) {
usbDisconnectBus(usbp);
usbStop(usbp);
#if USB_SUSPEND_WAKEUP_DELAY > 0
// Some hubs, kvm switches, and monitors do
// weird things, with USB device state bouncing
// around wildly on wakeup, yielding race
// conditions that can corrupt the keyboard state.
//
// Pause for a while to let things settle...
wait_ms(USB_SUSPEND_WAKEUP_DELAY);
#endif
wait_ms(50);
usbStart(usbp, &usbcfg);
usbConnectBus(usbp);
}