From d0b50c2770a0e2d54b37153f2801e2e7dc865fa6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 19 Oct 2016 12:09:45 +0200 Subject: kernel: drop usbdev LED trigger MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It was LEDE's trigger that was replaced by upstream usbport one. Signed-off-by: Rafał Miłecki --- .../generic/files/drivers/leds/ledtrig-usbdev.c | 371 --------------------- 1 file changed, 371 deletions(-) delete mode 100644 target/linux/generic/files/drivers/leds/ledtrig-usbdev.c (limited to 'target/linux/generic/files/drivers') 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 2524bce..0000000 --- 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 - * - * derived from ledtrig-netdev.c: - * Copyright 2007 Oliver Jowett - * - * ledtrig-netdev.c derived from ledtrig-timer.c: - * Copyright 2005-2006 Openedhand Ltd. - * Author: Richard Purdie - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#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 "); -MODULE_DESCRIPTION("USB device LED trigger"); -MODULE_LICENSE("GPL v2"); -- cgit v1.1