kernel: drop usbdev LED trigger

It was LEDE's trigger that was replaced by upstream usbport one.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 0 insertions, 371 deletions

diff --git a/target/linux/generic/files/drivers/leds/ledtrig-usbdev.c b/target/linux/generic/files/drivers/leds/ledtrig-usbdev.c
deleted file mode 100644
index 2524bce93b..0000000000
--- a/target/linux/generic/files/drivers/leds/ledtrig-usbdev.c
+++ /dev/null
@@ -1,371 +0,0 @@
-/*
- * LED USB device Trigger
- *
- * Toggles the LED to reflect the presence and activity of an USB device
- * Copyright (C) Gabor Juhos <juhosg@openwrt.org>
- *
- * derived from ledtrig-netdev.c:
- *	Copyright 2007 Oliver Jowett <oliver@opencloud.com>
- *
- * ledtrig-netdev.c derived from ledtrig-timer.c:
- *	Copyright 2005-2006 Openedhand Ltd.
- *	Author: Richard Purdie <rpurdie@openedhand.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/module.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/spinlock.h>
-#include <linux/device.h>
-#include <linux/sysdev.h>
-#include <linux/timer.h>
-#include <linux/ctype.h>
-#include <linux/slab.h>
-#include <linux/leds.h>
-#include <linux/usb.h>
-
-#include "leds.h"
-
-#define DEV_BUS_ID_SIZE		32
-
-/*
- * Configurable sysfs attributes:
- *
- * device_name - name of the USB device to monitor
- * activity_interval - duration of LED blink, in milliseconds
- */
-
-struct usbdev_trig_data {
-	rwlock_t lock;
-
-	struct timer_list timer;
-	struct notifier_block notifier;
-
-	struct led_classdev *led_cdev;
-	struct usb_device *usb_dev;
-
-	char device_name[DEV_BUS_ID_SIZE];
-	unsigned interval;
-	int last_urbnum;
-};
-
-static void usbdev_trig_update_state(struct usbdev_trig_data *td)
-{
-	if (td->usb_dev)
-		led_set_brightness(td->led_cdev, LED_FULL);
-	else
-		led_set_brightness(td->led_cdev, LED_OFF);
-
-	if (td->interval && td->usb_dev)
-		mod_timer(&td->timer, jiffies + td->interval);
-	else
-		del_timer(&td->timer);
-}
-
-static ssize_t usbdev_trig_name_show(struct device *dev,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct usbdev_trig_data *td = led_cdev->trigger_data;
-
-	read_lock(&td->lock);
-	sprintf(buf, "%s\n", td->device_name);
-	read_unlock(&td->lock);
-
-	return strlen(buf) + 1;
-}
-
-struct usbdev_trig_match {
-	char *device_name;
-	struct usb_device *usb_dev;
-};
-
-static int usbdev_trig_find_usb_dev(struct usb_device *usb_dev, void *data)
-{
-	struct usbdev_trig_match *match = data;
-
-	if (strcmp(dev_name(&usb_dev->dev), match->device_name) != 0)
-		return 0;
-
-	if (WARN_ON(match->usb_dev))
-		return 0;
-
-	dev_dbg(&usb_dev->dev, "matched this device!\n");
-	match->usb_dev = usb_get_dev(usb_dev);
-
-	return 0;
-}
-
-static ssize_t usbdev_trig_name_store(struct device *dev,
-				      struct device_attribute *attr,
-				      const char *buf,
-				      size_t size)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct usbdev_trig_data *td = led_cdev->trigger_data;
-
-	if (size < 0 || size >= DEV_BUS_ID_SIZE)
-		return -EINVAL;
-
-	write_lock(&td->lock);
-
-	strcpy(td->device_name, buf);
-	if (size > 0 && td->device_name[size - 1] == '\n')
-		td->device_name[size - 1] = 0;
-
-	if (td->device_name[0] != 0) {
-		struct usbdev_trig_match match = {
-			.device_name = td->device_name,
-		};
-
-		/* check for existing device to update from */
-		usb_for_each_dev(&match, usbdev_trig_find_usb_dev);
-		if (match.usb_dev) {
-			if (td->usb_dev)
-				usb_put_dev(td->usb_dev);
-
-			td->usb_dev = match.usb_dev;
-			td->last_urbnum = atomic_read(&match.usb_dev->urbnum);
-		}
-
-		/* updates LEDs, may start timers */
-		usbdev_trig_update_state(td);
-	}
-
-	write_unlock(&td->lock);
-	return size;
-}
-
-static DEVICE_ATTR(device_name, 0644, usbdev_trig_name_show,
-		   usbdev_trig_name_store);
-
-static ssize_t usbdev_trig_interval_show(struct device *dev,
-				 	 struct device_attribute *attr,
-					 char *buf)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct usbdev_trig_data *td = led_cdev->trigger_data;
-
-	read_lock(&td->lock);
-	sprintf(buf, "%u\n", jiffies_to_msecs(td->interval));
-	read_unlock(&td->lock);
-
-	return strlen(buf) + 1;
-}
-
-static ssize_t usbdev_trig_interval_store(struct device *dev,
-					  struct device_attribute *attr,
-					  const char *buf,
-					  size_t size)
-{
-	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	struct usbdev_trig_data *td = led_cdev->trigger_data;
-	int ret = -EINVAL;
-	char *after;
-	unsigned long value = simple_strtoul(buf, &after, 10);
-	size_t count = after - buf;
-
-	if (*after && isspace(*after))
-		count++;
-
-	if (count == size && value <= 10000) {
-		write_lock(&td->lock);
-		td->interval = msecs_to_jiffies(value);
-		usbdev_trig_update_state(td); /* resets timer */
-		write_unlock(&td->lock);
-		ret = count;
-	}
-
-	return ret;
-}
-
-static DEVICE_ATTR(activity_interval, 0644, usbdev_trig_interval_show,
-		   usbdev_trig_interval_store);
-
-static int usbdev_trig_notify(struct notifier_block *nb,
-			      unsigned long evt,
-			      void *data)
-{
-	struct usb_device *usb_dev;
-	struct usbdev_trig_data *td;
-
-	if (evt != USB_DEVICE_ADD && evt != USB_DEVICE_REMOVE)
-		return NOTIFY_DONE;
-
-	usb_dev = data;
-	td = container_of(nb, struct usbdev_trig_data, notifier);
-
-	write_lock(&td->lock);
-
-	if (strcmp(dev_name(&usb_dev->dev), td->device_name))
-		goto done;
-
-	if (evt == USB_DEVICE_ADD) {
-		usb_get_dev(usb_dev);
-		if (td->usb_dev != NULL)
-			usb_put_dev(td->usb_dev);
-		td->usb_dev = usb_dev;
-		td->last_urbnum = atomic_read(&usb_dev->urbnum);
-	} else if (evt == USB_DEVICE_REMOVE) {
-		if (td->usb_dev != NULL) {
-			usb_put_dev(td->usb_dev);
-			td->usb_dev = NULL;
-		}
-	}
-
-	usbdev_trig_update_state(td);
-
-done:
-	write_unlock(&td->lock);
-	return NOTIFY_DONE;
-}
-
-/* here's the real work! */
-static void usbdev_trig_timer(unsigned long arg)
-{
-	struct usbdev_trig_data *td = (struct usbdev_trig_data *)arg;
-	int new_urbnum;
-
-	write_lock(&td->lock);
-
-	if (!td->usb_dev || td->interval == 0) {
-		/*
-		 * we don't need to do timer work, just reflect device presence
-		 */
-		if (td->usb_dev)
-			led_set_brightness(td->led_cdev, LED_FULL);
-		else
-			led_set_brightness(td->led_cdev, LED_OFF);
-
-		goto no_restart;
-	}
-
-	if (td->interval)
-		new_urbnum = atomic_read(&td->usb_dev->urbnum);
-	else
-		new_urbnum = 0;
-
-	if (td->usb_dev) {
-		/*
-		 * Base state is ON (device is present). If there's no device,
-		 * we don't get this far and the LED is off.
-		 * OFF -> ON always
-		 * ON -> OFF on activity
-		 */
-		if (td->led_cdev->brightness == LED_OFF)
-			led_set_brightness(td->led_cdev, LED_FULL);
-		else if (td->last_urbnum != new_urbnum)
-			led_set_brightness(td->led_cdev, LED_OFF);
-	} else {
-		/*
-		 * base state is OFF
-		 * ON -> OFF always
-		 * OFF -> ON on activity
-		 */
-		if (td->led_cdev->brightness == LED_FULL)
-			led_set_brightness(td->led_cdev, LED_OFF);
-		else if (td->last_urbnum != new_urbnum)
-			led_set_brightness(td->led_cdev, LED_FULL);
-	}
-
-	td->last_urbnum = new_urbnum;
-	mod_timer(&td->timer, jiffies + td->interval);
-
-no_restart:
-	write_unlock(&td->lock);
-}
-
-static void usbdev_trig_activate(struct led_classdev *led_cdev)
-{
-	struct usbdev_trig_data *td;
-	int rc;
-
-	td = kzalloc(sizeof(struct usbdev_trig_data), GFP_KERNEL);
-	if (!td)
-		return;
-
-	rwlock_init(&td->lock);
-
-	td->notifier.notifier_call = usbdev_trig_notify;
-	td->notifier.priority = 10;
-
-	setup_timer(&td->timer, usbdev_trig_timer, (unsigned long) td);
-
-	td->led_cdev = led_cdev;
-	td->interval = msecs_to_jiffies(50);
-
-	led_cdev->trigger_data = td;
-
-	rc = device_create_file(led_cdev->dev, &dev_attr_device_name);
-	if (rc)
-		goto err_out;
-
-	rc = device_create_file(led_cdev->dev, &dev_attr_activity_interval);
-	if (rc)
-		goto err_out_device_name;
-
-	usb_register_notify(&td->notifier);
-	return;
-
-err_out_device_name:
-	device_remove_file(led_cdev->dev, &dev_attr_device_name);
-err_out:
-	led_cdev->trigger_data = NULL;
-	kfree(td);
-}
-
-static void usbdev_trig_deactivate(struct led_classdev *led_cdev)
-{
-	struct usbdev_trig_data *td = led_cdev->trigger_data;
-
-	if (td) {
-		usb_unregister_notify(&td->notifier);
-
-		device_remove_file(led_cdev->dev, &dev_attr_device_name);
-		device_remove_file(led_cdev->dev, &dev_attr_activity_interval);
-
-		write_lock(&td->lock);
-
-		if (td->usb_dev) {
-			usb_put_dev(td->usb_dev);
-			td->usb_dev = NULL;
-		}
-
-		write_unlock(&td->lock);
-
-		del_timer_sync(&td->timer);
-
-		kfree(td);
-	}
-}
-
-static struct led_trigger usbdev_led_trigger = {
-	.name		= "usbdev",
-	.activate	= usbdev_trig_activate,
-	.deactivate	= usbdev_trig_deactivate,
-};
-
-static int __init usbdev_trig_init(void)
-{
-	return led_trigger_register(&usbdev_led_trigger);
-}
-
-static void __exit usbdev_trig_exit(void)
-{
-	led_trigger_unregister(&usbdev_led_trigger);
-}
-
-module_init(usbdev_trig_init);
-module_exit(usbdev_trig_exit);
-
-MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-MODULE_DESCRIPTION("USB device LED trigger");
-MODULE_LICENSE("GPL v2");