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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849// SPDX-License-Identifier: GPL-2.0/* * LED Triggers for USB Activity * * Copyright 2014 Michal Sojka <sojka@merica.cz> */
#include <linux/module.h>#include <linux/kernel.h>#include <linux/init.h>#include <linux/leds.h>#include <linux/usb.h>#include "common.h"
#define BLINK_DELAY 30
DEFINE_LED_TRIGGER(ledtrig_usb_gadget);DEFINE_LED_TRIGGER(ledtrig_usb_host);
void usb_led_activity(enum usb_led_event ev){ struct led_trigger *trig = NULL;
switch (ev) { case USB_LED_EVENT_GADGET: trig = ledtrig_usb_gadget; break; case USB_LED_EVENT_HOST: trig = ledtrig_usb_host; break; } /* led_trigger_blink_oneshot() handles trig == NULL gracefully */ led_trigger_blink_oneshot(trig, BLINK_DELAY, BLINK_DELAY, 0);}EXPORT_SYMBOL_GPL(usb_led_activity);
void __init ledtrig_usb_init(void){ led_trigger_register_simple("usb-gadget", &ledtrig_usb_gadget); led_trigger_register_simple("usb-host", &ledtrig_usb_host);}
void __exit ledtrig_usb_exit(void){ led_trigger_unregister_simple(ledtrig_usb_gadget); led_trigger_unregister_simple(ledtrig_usb_host);}