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-rw-r--r--recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-ledtrig-netdev.patch529
1 files changed, 529 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-ledtrig-netdev.patch b/recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-ledtrig-netdev.patch
new file mode 100644
index 0000000..8083d32
--- /dev/null
+++ b/recipes-kernel/linux/linux-at91-4.9.87/linux-4.9-ledtrig-netdev.patch
@@ -0,0 +1,529 @@
+diff --git a/drivers/leds/trigger/Kconfig b/drivers/leds/trigger/Kconfig
+index 3f9ddb9..6e75773 100644
+--- a/drivers/leds/trigger/Kconfig
++++ b/drivers/leds/trigger/Kconfig
+@@ -126,4 +126,12 @@ config LEDS_TRIGGER_PANIC
+ a different trigger.
+ If unsure, say Y.
+
++config LEDS_TRIGGER_NETDEV
++ tristate "LED Netdev Trigger"
++ depends on NET
++ depends on LEDS_TRIGGERS
++ help
++ This allows LEDs to be controlled by network device activity.
++ If unsure, say Y.
++
+ endif # LEDS_TRIGGERS
+diff --git a/drivers/leds/trigger/Makefile b/drivers/leds/trigger/Makefile
+index a72c43c..9ddae9c 100644
+--- a/drivers/leds/trigger/Makefile
++++ b/drivers/leds/trigger/Makefile
+@@ -10,3 +10,4 @@ obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
+ obj-$(CONFIG_LEDS_TRIGGER_TRANSIENT) += ledtrig-transient.o
+ obj-$(CONFIG_LEDS_TRIGGER_CAMERA) += ledtrig-camera.o
+ obj-$(CONFIG_LEDS_TRIGGER_PANIC) += ledtrig-panic.o
++obj-$(CONFIG_LEDS_TRIGGER_NETDEV) += ledtrig-netdev.o
+\ No newline at end of file
+diff --git a/drivers/leds/trigger/ledtrig-netdev.c b/drivers/leds/trigger/ledtrig-netdev.c
+new file mode 100644
+index 0000000..935e625
+--- /dev/null
++++ b/drivers/leds/trigger/ledtrig-netdev.c
+@@ -0,0 +1,496 @@
++// SPDX-License-Identifier: GPL-2.0
++// Copyright 2017 Ben Whitten <ben.whitten@gmail.com>
++// Copyright 2007 Oliver Jowett <oliver@opencloud.com>
++//
++// LED Kernel Netdev Trigger
++//
++// Toggles the LED to reflect the link and traffic state of a named net device
++//
++// Derived from ledtrig-timer.c which is:
++// Copyright 2005-2006 Openedhand Ltd.
++// Author: Richard Purdie <rpurdie@openedhand.com>
++
++#include <linux/atomic.h>
++#include <linux/ctype.h>
++#include <linux/device.h>
++#include <linux/init.h>
++#include <linux/jiffies.h>
++#include <linux/kernel.h>
++#include <linux/leds.h>
++#include <linux/list.h>
++#include <linux/module.h>
++#include <linux/netdevice.h>
++#include <linux/spinlock.h>
++#include <linux/timer.h>
++#include "../leds.h"
++
++/*
++ * Configurable sysfs attributes:
++ *
++ * device_name - network device name to monitor
++ * interval - duration of LED blink, in milliseconds
++ * link - LED's normal state reflects whether the link is up
++ * (has carrier) or not
++ * tx - LED blinks on transmitted data
++ * rx - LED blinks on receive data
++ *
++ */
++
++struct led_netdev_data {
++ spinlock_t lock;
++
++ struct delayed_work work;
++ struct notifier_block notifier;
++
++ struct led_classdev *led_cdev;
++ struct net_device *net_dev;
++
++ char device_name[IFNAMSIZ];
++ atomic_t interval;
++ unsigned int last_activity;
++
++ unsigned long mode;
++#define NETDEV_LED_LINK 0
++#define NETDEV_LED_TX 1
++#define NETDEV_LED_RX 2
++#define NETDEV_LED_MODE_LINKUP 3
++};
++
++enum netdev_led_attr {
++ NETDEV_ATTR_LINK,
++ NETDEV_ATTR_TX,
++ NETDEV_ATTR_RX
++};
++
++static void set_baseline_state(struct led_netdev_data *trigger_data)
++{
++ int current_brightness;
++ struct led_classdev *led_cdev = trigger_data->led_cdev;
++
++ current_brightness = led_cdev->brightness;
++ if (current_brightness)
++ led_cdev->blink_brightness = current_brightness;
++ if (!led_cdev->blink_brightness)
++ led_cdev->blink_brightness = led_cdev->max_brightness;
++
++ if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode))
++ led_set_brightness(led_cdev, LED_OFF);
++ else {
++ if (test_bit(NETDEV_LED_LINK, &trigger_data->mode))
++ led_set_brightness(led_cdev,
++ led_cdev->blink_brightness);
++ else
++ led_set_brightness(led_cdev, LED_OFF);
++
++ /* If we are looking for RX/TX start periodically
++ * checking stats
++ */
++ if (test_bit(NETDEV_LED_TX, &trigger_data->mode) ||
++ test_bit(NETDEV_LED_RX, &trigger_data->mode))
++ schedule_delayed_work(&trigger_data->work, 0);
++ }
++}
++
++static ssize_t device_name_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ ssize_t len;
++
++ spin_lock_bh(&trigger_data->lock);
++ len = sprintf(buf, "%s\n", trigger_data->device_name);
++ spin_unlock_bh(&trigger_data->lock);
++
++ return len;
++}
++
++static ssize_t device_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 led_netdev_data *trigger_data = led_cdev->trigger_data;
++
++ if (size >= IFNAMSIZ)
++ return -EINVAL;
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ spin_lock_bh(&trigger_data->lock);
++
++ if (trigger_data->net_dev) {
++ dev_put(trigger_data->net_dev);
++ trigger_data->net_dev = NULL;
++ }
++
++ strncpy(trigger_data->device_name, buf, size);
++ if (size > 0 && trigger_data->device_name[size - 1] == '\n')
++ trigger_data->device_name[size - 1] = 0;
++
++ if (trigger_data->device_name[0] != 0)
++ trigger_data->net_dev =
++ dev_get_by_name(&init_net, trigger_data->device_name);
++
++ clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ if (trigger_data->net_dev != NULL)
++ if (netif_carrier_ok(trigger_data->net_dev))
++ set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++
++ trigger_data->last_activity = 0;
++
++ set_baseline_state(trigger_data);
++ spin_unlock_bh(&trigger_data->lock);
++
++ return size;
++}
++
++static DEVICE_ATTR_RW(device_name);
++
++static ssize_t netdev_led_attr_show(struct device *dev, char *buf,
++ enum netdev_led_attr attr)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ int bit;
++
++ switch (attr) {
++ case NETDEV_ATTR_LINK:
++ bit = NETDEV_LED_LINK;
++ break;
++ case NETDEV_ATTR_TX:
++ bit = NETDEV_LED_TX;
++ break;
++ case NETDEV_ATTR_RX:
++ bit = NETDEV_LED_RX;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ return sprintf(buf, "%u\n", test_bit(bit, &trigger_data->mode));
++}
++
++static ssize_t netdev_led_attr_store(struct device *dev, const char *buf,
++ size_t size, enum netdev_led_attr attr)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++ unsigned long state;
++ int ret;
++ int bit;
++
++ ret = kstrtoul(buf, 0, &state);
++ if (ret)
++ return ret;
++
++ switch (attr) {
++ case NETDEV_ATTR_LINK:
++ bit = NETDEV_LED_LINK;
++ break;
++ case NETDEV_ATTR_TX:
++ bit = NETDEV_LED_TX;
++ break;
++ case NETDEV_ATTR_RX:
++ bit = NETDEV_LED_RX;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ if (state)
++ set_bit(bit, &trigger_data->mode);
++ else
++ clear_bit(bit, &trigger_data->mode);
++
++ set_baseline_state(trigger_data);
++
++ return size;
++}
++
++static ssize_t link_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_LINK);
++}
++
++static ssize_t link_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_LINK);
++}
++
++static DEVICE_ATTR_RW(link);
++
++static ssize_t tx_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_TX);
++}
++
++static ssize_t tx_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_TX);
++}
++
++static DEVICE_ATTR_RW(tx);
++
++static ssize_t rx_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ return netdev_led_attr_show(dev, buf, NETDEV_ATTR_RX);
++}
++
++static ssize_t rx_store(struct device *dev,
++ struct device_attribute *attr, const char *buf, size_t size)
++{
++ return netdev_led_attr_store(dev, buf, size, NETDEV_ATTR_RX);
++}
++
++static DEVICE_ATTR_RW(rx);
++
++static ssize_t interval_show(struct device *dev,
++ struct device_attribute *attr, char *buf)
++{
++ struct led_classdev *led_cdev = dev_get_drvdata(dev);
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++
++ return sprintf(buf, "%u\n",
++ jiffies_to_msecs(atomic_read(&trigger_data->interval)));
++}
++
++static ssize_t 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 led_netdev_data *trigger_data = led_cdev->trigger_data;
++ unsigned long value;
++ int ret;
++
++ ret = kstrtoul(buf, 0, &value);
++ if (ret)
++ return ret;
++
++ /* impose some basic bounds on the timer interval */
++ if (value >= 5 && value <= 10000) {
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ atomic_set(&trigger_data->interval, msecs_to_jiffies(value));
++ set_baseline_state(trigger_data); /* resets timer */
++ }
++
++ return size;
++}
++
++static DEVICE_ATTR_RW(interval);
++
++static int netdev_trig_notify(struct notifier_block *nb,
++ unsigned long evt, void *dv)
++{
++ struct net_device *dev =
++ netdev_notifier_info_to_dev((struct netdev_notifier_info *)dv);
++ struct led_netdev_data *trigger_data = container_of(nb,
++ struct
++ led_netdev_data,
++ notifier);
++
++ if (evt != NETDEV_UP && evt != NETDEV_DOWN && evt != NETDEV_CHANGE
++ && evt != NETDEV_REGISTER && evt != NETDEV_UNREGISTER
++ && evt != NETDEV_CHANGENAME)
++ return NOTIFY_DONE;
++
++ if (strcmp(dev->name, trigger_data->device_name))
++ return NOTIFY_DONE;
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ spin_lock_bh(&trigger_data->lock);
++
++ clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ switch (evt) {
++ case NETDEV_REGISTER:
++ if (trigger_data->net_dev)
++ dev_put(trigger_data->net_dev);
++ dev_hold(dev);
++ trigger_data->net_dev = dev;
++ break;
++ case NETDEV_CHANGENAME:
++ case NETDEV_UNREGISTER:
++ if (trigger_data->net_dev) {
++ dev_put(trigger_data->net_dev);
++ trigger_data->net_dev = NULL;
++ }
++ break;
++ case NETDEV_UP:
++ case NETDEV_CHANGE:
++ if (netif_carrier_ok(dev))
++ set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
++ break;
++ }
++
++ set_baseline_state(trigger_data);
++
++ spin_unlock_bh(&trigger_data->lock);
++
++ return NOTIFY_DONE;
++}
++
++/* here's the real work! */
++static void netdev_trig_work(struct work_struct *work)
++{
++ struct led_netdev_data *trigger_data = container_of(work,
++ struct
++ led_netdev_data,
++ work.work);
++ struct rtnl_link_stats64 *dev_stats;
++ unsigned int new_activity;
++ struct rtnl_link_stats64 temp;
++ unsigned long interval;
++ int invert;
++
++ /* If we dont have a device, insure we are off */
++ if (!trigger_data->net_dev) {
++ led_set_brightness(trigger_data->led_cdev, LED_OFF);
++ return;
++ }
++
++ /* If we are not looking for RX/TX then return */
++ if (!test_bit(NETDEV_LED_TX, &trigger_data->mode) &&
++ !test_bit(NETDEV_LED_RX, &trigger_data->mode))
++ return;
++
++ dev_stats = dev_get_stats(trigger_data->net_dev, &temp);
++ new_activity =
++ (test_bit(NETDEV_LED_TX, &trigger_data->mode) ?
++ dev_stats->tx_packets : 0) +
++ (test_bit(NETDEV_LED_RX, &trigger_data->mode) ?
++ dev_stats->rx_packets : 0);
++
++ if (trigger_data->last_activity != new_activity) {
++ led_stop_software_blink(trigger_data->led_cdev);
++
++ invert = test_bit(NETDEV_LED_LINK, &trigger_data->mode);
++ interval = jiffies_to_msecs(
++ atomic_read(&trigger_data->interval));
++ /* base state is ON (link present) */
++ led_blink_set_oneshot(trigger_data->led_cdev,
++ &interval,
++ &interval,
++ invert);
++ trigger_data->last_activity = new_activity;
++ }
++
++ schedule_delayed_work(&trigger_data->work,
++ (atomic_read(&trigger_data->interval)*2));
++}
++
++static void netdev_trig_activate(struct led_classdev *led_cdev)
++{
++ struct led_netdev_data *trigger_data;
++ int rc;
++
++ trigger_data = kzalloc(sizeof(struct led_netdev_data), GFP_KERNEL);
++ if (!trigger_data)
++ return;
++
++ spin_lock_init(&trigger_data->lock);
++
++ trigger_data->notifier.notifier_call = netdev_trig_notify;
++ trigger_data->notifier.priority = 10;
++
++ INIT_DELAYED_WORK(&trigger_data->work, netdev_trig_work);
++
++ trigger_data->led_cdev = led_cdev;
++ trigger_data->net_dev = NULL;
++ trigger_data->device_name[0] = 0;
++
++ trigger_data->mode = 0;
++ atomic_set(&trigger_data->interval, msecs_to_jiffies(50));
++ trigger_data->last_activity = 0;
++
++ led_cdev->trigger_data = trigger_data;
++
++ 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_link);
++ if (rc)
++ goto err_out_device_name;
++ rc = device_create_file(led_cdev->dev, &dev_attr_rx);
++ if (rc)
++ goto err_out_link;
++ rc = device_create_file(led_cdev->dev, &dev_attr_tx);
++ if (rc)
++ goto err_out_rx;
++ rc = device_create_file(led_cdev->dev, &dev_attr_interval);
++ if (rc)
++ goto err_out_tx;
++ rc = register_netdevice_notifier(&trigger_data->notifier);
++ if (rc)
++ goto err_out_interval;
++ return;
++
++err_out_interval:
++ device_remove_file(led_cdev->dev, &dev_attr_interval);
++err_out_tx:
++ device_remove_file(led_cdev->dev, &dev_attr_tx);
++err_out_rx:
++ device_remove_file(led_cdev->dev, &dev_attr_rx);
++err_out_link:
++ device_remove_file(led_cdev->dev, &dev_attr_link);
++err_out_device_name:
++ device_remove_file(led_cdev->dev, &dev_attr_device_name);
++err_out:
++ led_cdev->trigger_data = NULL;
++ kfree(trigger_data);
++}
++
++static void netdev_trig_deactivate(struct led_classdev *led_cdev)
++{
++ struct led_netdev_data *trigger_data = led_cdev->trigger_data;
++
++ if (trigger_data) {
++ unregister_netdevice_notifier(&trigger_data->notifier);
++
++ device_remove_file(led_cdev->dev, &dev_attr_device_name);
++ device_remove_file(led_cdev->dev, &dev_attr_link);
++ device_remove_file(led_cdev->dev, &dev_attr_rx);
++ device_remove_file(led_cdev->dev, &dev_attr_tx);
++ device_remove_file(led_cdev->dev, &dev_attr_interval);
++
++ cancel_delayed_work_sync(&trigger_data->work);
++
++ if (trigger_data->net_dev)
++ dev_put(trigger_data->net_dev);
++
++ kfree(trigger_data);
++ }
++}
++
++static struct led_trigger netdev_led_trigger = {
++ .name = "netdev",
++ .activate = netdev_trig_activate,
++ .deactivate = netdev_trig_deactivate,
++};
++
++static int __init netdev_trig_init(void)
++{
++ return led_trigger_register(&netdev_led_trigger);
++}
++
++static void __exit netdev_trig_exit(void)
++{
++ led_trigger_unregister(&netdev_led_trigger);
++}
++
++module_init(netdev_trig_init);
++module_exit(netdev_trig_exit);
++
++MODULE_AUTHOR("Ben Whitten <ben.whitten@gmail.com>");
++MODULE_AUTHOR("Oliver Jowett <oliver@opencloud.com>");
++MODULE_DESCRIPTION("Netdev LED trigger");
++MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 12:32:30 +0000