Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* LED Triggers for USB Activity
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*
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* Copyright 2014 Michal Sojka <sojka@merica.cz>
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/leds.h>
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#include <linux/usb.h>
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#include "common.h"
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#define BLINK_DELAY 30
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DEFINE_LED_TRIGGER(ledtrig_usb_gadget);
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DEFINE_LED_TRIGGER(ledtrig_usb_host);
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void usb_led_activity(enum usb_led_event ev)
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{
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struct led_trigger *trig = NULL;
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switch (ev) {
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case USB_LED_EVENT_GADGET:
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trig = ledtrig_usb_gadget;
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break;
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case USB_LED_EVENT_HOST:
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trig = ledtrig_usb_host;
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break;
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}
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/* led_trigger_blink_oneshot() handles trig == NULL gracefully */
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led_trigger_blink_oneshot(trig, BLINK_DELAY, BLINK_DELAY, 0);
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}
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EXPORT_SYMBOL_GPL(usb_led_activity);
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void __init ledtrig_usb_init(void)
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{
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led_trigger_register_simple("usb-gadget", &ledtrig_usb_gadget);
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led_trigger_register_simple("usb-host", &ledtrig_usb_host);
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}
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void __exit ledtrig_usb_exit(void)
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{
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led_trigger_unregister_simple(ledtrig_usb_gadget);
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led_trigger_unregister_simple(ledtrig_usb_host);
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}
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