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add generic 2.6.26 patches/files

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11323 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
kaloz
2008-06-02 08:22:56 +00:00
parent d2cb36d9c5
commit 8540d5d19e
102 changed files with 50070 additions and 0 deletions
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172
target/linux/generic-2.6/files-2.6.26/drivers/leds/leds-alix.c Normal file
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@@ -0,0 +1,172 @@
/*
* LEDs driver for PCEngines ALIX 2/3 series
*
* Copyright (C) 2007 Petr Liebman
*
* Based on leds-wrap.c
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/err.h>
#include <asm/io.h>
#define DRVNAME "alix-led"
#define ALIX_LED1_PORT (0x6100)
#define ALIX_LED1_ON (1<<22)
#define ALIX_LED1_OFF (1<<6)
#define ALIX_LED2_PORT (0x6180)
#define ALIX_LED2_ON (1<<25)
#define ALIX_LED2_OFF (1<<9)
#define ALIX_LED3_PORT (0x6180)
#define ALIX_LED3_ON (1<<27)
#define ALIX_LED3_OFF (1<<11)
static struct platform_device *pdev;
static void alix_led_set_1(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
outl(ALIX_LED1_ON, ALIX_LED1_PORT);
else
outl(ALIX_LED1_OFF, ALIX_LED1_PORT);
}
static void alix_led_set_2(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
outl(ALIX_LED2_ON, ALIX_LED2_PORT);
else
outl(ALIX_LED2_OFF, ALIX_LED2_PORT);
}
static void alix_led_set_3(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
outl(ALIX_LED3_ON, ALIX_LED3_PORT);
else
outl(ALIX_LED3_OFF, ALIX_LED3_PORT);
}
static struct led_classdev alix_led_1 = {
.name = "alix:1",
.brightness_set = alix_led_set_1,
};
static struct led_classdev alix_led_2 = {
.name = "alix:2",
.brightness_set = alix_led_set_2,
};
static struct led_classdev alix_led_3 = {
.name = "alix:3",
.brightness_set = alix_led_set_3,
};
#ifdef CONFIG_PM
static int alix_led_suspend(struct platform_device *dev,
pm_message_t state)
{
led_classdev_suspend(&alix_led_1);
led_classdev_suspend(&alix_led_2);
led_classdev_suspend(&alix_led_3);
return 0;
}
static int alix_led_resume(struct platform_device *dev)
{
led_classdev_resume(&alix_led_1);
led_classdev_resume(&alix_led_2);
led_classdev_resume(&alix_led_3);
return 0;
}
#else
#define alix_led_suspend NULL
#define alix_led_resume NULL
#endif
static int alix_led_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &alix_led_1);
if (ret >= 0)
{
ret = led_classdev_register(&pdev->dev, &alix_led_2);
if (ret >= 0)
{
ret = led_classdev_register(&pdev->dev, &alix_led_3);
if (ret < 0)
led_classdev_unregister(&alix_led_2);
}
if (ret < 0)
led_classdev_unregister(&alix_led_1);
}
return ret;
}
static int alix_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&alix_led_1);
led_classdev_unregister(&alix_led_2);
led_classdev_unregister(&alix_led_3);
return 0;
}
static struct platform_driver alix_led_driver = {
.probe = alix_led_probe,
.remove = alix_led_remove,
.suspend = alix_led_suspend,
.resume = alix_led_resume,
.driver = {
.name = DRVNAME,
.owner = THIS_MODULE,
},
};
static int __init alix_led_init(void)
{
int ret;
ret = platform_driver_register(&alix_led_driver);
if (ret < 0)
goto out;
pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0);
if (IS_ERR(pdev)) {
ret = PTR_ERR(pdev);
platform_driver_unregister(&alix_led_driver);
goto out;
}
out:
return ret;
}
static void __exit alix_led_exit(void)
{
platform_device_unregister(pdev);
platform_driver_unregister(&alix_led_driver);
}
module_init(alix_led_init);
module_exit(alix_led_exit);
MODULE_AUTHOR("Petr Liebman");
MODULE_DESCRIPTION("PCEngines ALIX LED driver");
MODULE_LICENSE("GPL");

365
target/linux/generic-2.6/files-2.6.26/drivers/leds/ledtrig-morse.c Normal file
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@@ -0,0 +1,365 @@
/*
* LED Morse Trigger
*
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
*
* This file was based on: drivers/led/ledtrig-timer.c
* Copyright 2005-2006 Openedhand Ltd.
* Author: Richard Purdie <rpurdie@openedhand.com>
*
* also based on the patch '[PATCH] 2.5.59 morse code panics' posted
* in the LKML by Tomas Szepe at Thu, 30 Jan 2003
* Copyright (C) 2002 Andrew Rodland <arodland@noln.com>
* Copyright (C) 2003 Tomas Szepe <szepe@pinerecords.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/kernel.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/jiffies.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/leds.h>
#include "leds.h"
#define MORSE_DELAY_BASE (HZ/2)
#define MORSE_STATE_BLINK_START 0
#define MORSE_STATE_BLINK_STOP 1
#define MORSE_DIT_LEN 1
#define MORSE_DAH_LEN 3
#define MORSE_SPACE_LEN 7
struct morse_trig_data {
unsigned long delay;
char *msg;
unsigned char morse;
unsigned char state;
char *msgpos;
struct timer_list timer;
};
const unsigned char morsetable[] = {
0122, 0, 0310, 0, 0, 0163, /* "#$%&' */
055, 0155, 0, 0, 0163, 0141, 0152, 0051, /* ()*+,-./ */
077, 076, 074, 070, 060, 040, 041, 043, 047, 057, /* 0-9 */
0107, 0125, 0, 0061, 0, 0114, 0, /* :;<=>?@ */
006, 021, 025, 011, 002, 024, 013, 020, 004, /* A-I */
036, 015, 022, 007, 005, 017, 026, 033, 012, /* J-R */
010, 003, 014, 030, 016, 031, 035, 023, /* S-Z */
0, 0, 0, 0, 0154 /* [\]^_ */
};
static inline unsigned char tomorse(char c) {
if (c >= 'a' && c <= 'z')
c = c - 'a' + 'A';
if (c >= '"' && c <= '_') {
return morsetable[c - '"'];
} else
return 0;
}
static inline unsigned long dit_len(struct morse_trig_data *morse_data)
{
return MORSE_DIT_LEN*morse_data->delay;
}
static inline unsigned long dah_len(struct morse_trig_data *morse_data)
{
return MORSE_DAH_LEN*morse_data->delay;
}
static inline unsigned long space_len(struct morse_trig_data *morse_data)
{
return MORSE_SPACE_LEN*morse_data->delay;
}
static void morse_timer_function(unsigned long data)
{
struct led_classdev *led_cdev = (struct led_classdev *)data;
struct morse_trig_data *morse_data = led_cdev->trigger_data;
unsigned long brightness = LED_OFF;
unsigned long delay = 0;
if (!morse_data->msg)
goto set_led;
switch (morse_data->state) {
case MORSE_STATE_BLINK_START:
/* Starting a new blink. We have a valid code in morse. */
delay = (morse_data->morse & 001) ? dah_len(morse_data):
dit_len(morse_data);
brightness = LED_FULL;
morse_data->state = MORSE_STATE_BLINK_STOP;
morse_data->morse >>= 1;
break;
case MORSE_STATE_BLINK_STOP:
/* Coming off of a blink. */
morse_data->state = MORSE_STATE_BLINK_START;
if (morse_data->morse > 1) {
/* Not done yet, just a one-dit pause. */
delay = dit_len(morse_data);
break;
}
/* Get a new char, figure out how much space. */
/* First time through */
if (!morse_data->msgpos)
morse_data->msgpos = (char *)morse_data->msg;
if (!*morse_data->msgpos) {
/* Repeating */
morse_data->msgpos = (char *)morse_data->msg;
delay = space_len(morse_data);
} else {
/* Inter-letter space */
delay = dah_len(morse_data);
}
if (!(morse_data->morse = tomorse(*morse_data->msgpos))) {
delay = space_len(morse_data);
/* And get us back here */
morse_data->state = MORSE_STATE_BLINK_STOP;
}
morse_data->msgpos++;
break;
}
mod_timer(&morse_data->timer, jiffies + msecs_to_jiffies(delay));
set_led:
led_set_brightness(led_cdev, brightness);
}
static ssize_t _morse_delay_show(struct led_classdev *led_cdev, char *buf)
{
struct morse_trig_data *morse_data = led_cdev->trigger_data;
sprintf(buf, "%lu\n", morse_data->delay);
return strlen(buf) + 1;
}
static ssize_t _morse_delay_store(struct led_classdev *led_cdev,
const char *buf, size_t size)
{
struct morse_trig_data *morse_data = led_cdev->trigger_data;
char *after;
unsigned long state = simple_strtoul(buf, &after, 10);
size_t count = after - buf;
int ret = -EINVAL;
if (*after && isspace(*after))
count++;
if (count == size) {
morse_data->delay = state;
mod_timer(&morse_data->timer, jiffies + 1);
ret = count;
}
return ret;
}
static ssize_t _morse_msg_show(struct led_classdev *led_cdev, char *buf)
{
struct morse_trig_data *morse_data = led_cdev->trigger_data;
if (!morse_data->msg)
sprintf(buf, "<none>\n");
else
sprintf(buf, "%s\n", morse_data->msg);
return strlen(buf) + 1;
}
static ssize_t _morse_msg_store(struct led_classdev *led_cdev,
const char *buf, size_t size)
{
struct morse_trig_data *morse_data = led_cdev->trigger_data;
char *m;
m = kmalloc(size, GFP_KERNEL);
if (!m)
return -ENOMEM;
memcpy(m,buf,size);
m[size]='\0';
if (morse_data->msg)
kfree(morse_data->msg);
morse_data->msg = m;
morse_data->msgpos = NULL;
morse_data->state = MORSE_STATE_BLINK_STOP;
mod_timer(&morse_data->timer, jiffies + 1);
return size;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
static ssize_t morse_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
return _morse_delay_show(led_cdev, buf);
}
static ssize_t morse_delay_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
return _morse_delay_store(led_cdev, buf, size);
}
static ssize_t morse_msg_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
return _morse_msg_show(led_cdev, buf);
}
static ssize_t morse_msg_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
return _morse_msg_store(led_cdev, buf, size);
}
static DEVICE_ATTR(delay, 0644, morse_delay_show, morse_delay_store);
static DEVICE_ATTR(message, 0644, morse_msg_show, morse_msg_store);
#define led_device_create_file(leddev, attr) \
device_create_file(leddev->dev, &dev_attr_ ## attr)
#define led_device_remove_file(leddev, attr) \
device_remove_file(leddev->dev, &dev_attr_ ## attr)
#else
static ssize_t morse_delay_show(struct class_device *dev, char *buf)
{
struct led_classdev *led_cdev = class_get_devdata(dev);
return _morse_delay_show(led_cdev, buf);
}
static ssize_t morse_delay_store(struct class_device *dev, const char *buf,
size_t size)
{
struct led_classdev *led_cdev = class_get_devdata(dev);
return _morse_delay_store(led_cdev, buf, size);
}
static ssize_t morse_msg_show(struct class_device *dev, char *buf)
{
struct led_classdev *led_cdev = class_get_devdata(dev);
return _morse_msg_show(led_cdev, buf);
}
static ssize_t morse_msg_store(struct class_device *dev, const char *buf,
size_t size)
{
struct led_classdev *led_cdev = class_get_devdata(dev);
return _morse_msg_store(led_cdev, buf, size);
}
static CLASS_DEVICE_ATTR(delay, 0644, morse_delay_show, morse_delay_store);
static CLASS_DEVICE_ATTR(message, 0644, morse_msg_show, morse_msg_store);
#define led_device_create_file(leddev, attr) \
class_device_create_file(leddev->class_dev, &class_device_attr_ ## attr)
#define led_device_remove_file(leddev, attr) \
class_device_remove_file(leddev->class_dev, &class_device_attr_ ## attr)
#endif
static void morse_trig_activate(struct led_classdev *led_cdev)
{
struct morse_trig_data *morse_data;
int rc;
morse_data = kzalloc(sizeof(*morse_data), GFP_KERNEL);
if (!morse_data)
return;
morse_data->delay = MORSE_DELAY_BASE;
init_timer(&morse_data->timer);
morse_data->timer.function = morse_timer_function;
morse_data->timer.data = (unsigned long)led_cdev;
rc = led_device_create_file(led_cdev, delay);
if (rc) goto err;
rc = led_device_create_file(led_cdev, message);
if (rc) goto err_delay;
led_cdev->trigger_data = morse_data;
return;
err_delay:
led_device_remove_file(led_cdev, delay);
err:
kfree(morse_data);
}
static void morse_trig_deactivate(struct led_classdev *led_cdev)
{
struct morse_trig_data *morse_data = led_cdev->trigger_data;
if (!morse_data)
return;
led_device_remove_file(led_cdev, message);
led_device_remove_file(led_cdev, delay);
del_timer_sync(&morse_data->timer);
if (morse_data->msg)
kfree(morse_data->msg);
kfree(morse_data);
}
static struct led_trigger morse_led_trigger = {
.name = "morse",
.activate = morse_trig_activate,
.deactivate = morse_trig_deactivate,
};
static int __init morse_trig_init(void)
{
return led_trigger_register(&morse_led_trigger);
}
static void __exit morse_trig_exit(void)
{
led_trigger_unregister(&morse_led_trigger);
}
module_init(morse_trig_init);
module_exit(morse_trig_exit);
MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
MODULE_DESCRIPTION("Morse LED trigger");
MODULE_LICENSE("GPL");

437
target/linux/generic-2.6/files-2.6.26/drivers/leds/ledtrig-netdev.c Normal file
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@@ -0,0 +1,437 @@
/*
* LED Kernel Netdev Trigger
*
* Toggles the LED to reflect the link and traffic state of a named net device
*
* Copyright 2007 Oliver Jowett <oliver@opencloud.com>
*
* Derived from ledtrig-timer.c which is:
* 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/netdevice.h>
#include <linux/timer.h>
#include <linux/ctype.h>
#include <linux/leds.h>
#include "leds.h"
/*
* Configurable sysfs attributes:
*
* device_name - network device name to monitor
*
* interval - duration of LED blink, in milliseconds
*
* mode - either "none" (LED is off) or a space separated list of one or more of:
* 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
*
* Some suggestions:
*
* Simple link status LED:
* $ echo netdev >someled/trigger
* $ echo eth0 >someled/device_name
* $ echo link >someled/mode
*
* Ethernet-style link/activity LED:
* $ echo netdev >someled/trigger
* $ echo eth0 >someled/device_name
* $ echo "link tx rx" >someled/mode
*
* Modem-style tx/rx LEDs:
* $ echo netdev >led1/trigger
* $ echo ppp0 >led1/device_name
* $ echo tx >led1/mode
* $ echo netdev >led2/trigger
* $ echo ppp0 >led2/device_name
* $ echo rx >led2/mode
*
*/
#define MODE_LINK 1
#define MODE_TX 2
#define MODE_RX 4
struct led_netdev_data {
rwlock_t lock;
struct timer_list timer;
struct notifier_block notifier;
struct led_classdev *led_cdev;
struct net_device *net_dev;
char device_name[IFNAMSIZ];
unsigned interval;
unsigned mode;
unsigned link_up;
unsigned last_activity;
};
static void set_baseline_state(struct led_netdev_data *trigger_data)
{
if ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up)
led_set_brightness(trigger_data->led_cdev, LED_FULL);
else
led_set_brightness(trigger_data->led_cdev, LED_OFF);
if ((trigger_data->mode & (MODE_TX | MODE_RX)) != 0 && trigger_data->link_up)
mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
else
del_timer(&trigger_data->timer);
}
static ssize_t led_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;
read_lock(&trigger_data->lock);
sprintf(buf, "%s\n", trigger_data->device_name);
read_unlock(&trigger_data->lock);
return strlen(buf) + 1;
}
static ssize_t led_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 < 0 || size >= IFNAMSIZ)
return -EINVAL;
write_lock(&trigger_data->lock);
strcpy(trigger_data->device_name, buf);
if (size > 0 && trigger_data->device_name[size-1] == '\n')
trigger_data->device_name[size-1] = 0;
if (trigger_data->device_name[0] != 0) {
/* check for existing device to update from */
trigger_data->net_dev = dev_get_by_name(trigger_data->device_name);
if (trigger_data->net_dev != NULL)
trigger_data->link_up = (dev_get_flags(trigger_data->net_dev) & IFF_LOWER_UP) != 0;
set_baseline_state(trigger_data); /* updates LEDs, may start timers */
}
write_unlock(&trigger_data->lock);
return size;
}
static DEVICE_ATTR(device_name, 0644, led_device_name_show, led_device_name_store);
static ssize_t led_mode_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;
read_lock(&trigger_data->lock);
if (trigger_data->mode == 0) {
strcpy(buf, "none\n");
} else {
if (trigger_data->mode & MODE_LINK)
strcat(buf, "link ");
if (trigger_data->mode & MODE_TX)
strcat(buf, "tx ");
if (trigger_data->mode & MODE_RX)
strcat(buf, "rx ");
strcat(buf, "\n");
}
read_unlock(&trigger_data->lock);
return strlen(buf)+1;
}
static ssize_t led_mode_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;
char copybuf[1024];
int new_mode = -1;
char *p, *token;
/* take a copy since we don't want to trash the inbound buffer when using strsep */
strncpy(copybuf, buf, sizeof(copybuf));
copybuf[1023] = 0;
p = copybuf;
while ((token = strsep(&p, " \t\n")) != NULL) {
if (!*token)
continue;
if (new_mode == -1)
new_mode = 0;
if (!strcmp(token, "none"))
new_mode = 0;
else if (!strcmp(token, "tx"))
new_mode |= MODE_TX;
else if (!strcmp(token, "rx"))
new_mode |= MODE_RX;
else if (!strcmp(token, "link"))
new_mode |= MODE_LINK;
else
return -EINVAL;
}
if (new_mode == -1)
return -EINVAL;
write_lock(&trigger_data->lock);
trigger_data->mode = new_mode;
set_baseline_state(trigger_data);
write_unlock(&trigger_data->lock);
return size;
}
static DEVICE_ATTR(mode, 0644, led_mode_show, led_mode_store);
static ssize_t led_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;
read_lock(&trigger_data->lock);
sprintf(buf, "%u\n", jiffies_to_msecs(trigger_data->interval));
read_unlock(&trigger_data->lock);
return strlen(buf) + 1;
}
static ssize_t led_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;
int ret = -EINVAL;
char *after;
unsigned long value = simple_strtoul(buf, &after, 10);
size_t count = after - buf;
if (*after && isspace(*after))
count++;
/* impose some basic bounds on the timer interval */
if (count == size && value >= 5 && value <= 10000) {
write_lock(&trigger_data->lock);
trigger_data->interval = msecs_to_jiffies(value);
set_baseline_state(trigger_data); // resets timer
write_unlock(&trigger_data->lock);
ret = count;
}
return ret;
}
static DEVICE_ATTR(interval, 0644, led_interval_show, led_interval_store);
static int netdev_trig_notify(struct notifier_block *nb,
unsigned long evt,
void *dv)
{
struct net_device *dev = 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)
return NOTIFY_DONE;
write_lock(&trigger_data->lock);
if (strcmp(dev->name, trigger_data->device_name))
goto done;
if (evt == NETDEV_REGISTER) {
if (trigger_data->net_dev != NULL)
dev_put(trigger_data->net_dev);
dev_hold(dev);
trigger_data->net_dev = dev;
trigger_data->link_up = 0;
goto done;
}
if (evt == NETDEV_UNREGISTER && trigger_data->net_dev != NULL) {
dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL;
goto done;
}
/* UP / DOWN / CHANGE */
trigger_data->link_up = (evt != NETDEV_DOWN && netif_carrier_ok(dev));
set_baseline_state(trigger_data);
done:
write_unlock(&trigger_data->lock);
return NOTIFY_DONE;
}
/* here's the real work! */
static void netdev_trig_timer(unsigned long arg)
{
struct led_netdev_data *trigger_data = (struct led_netdev_data *)arg;
struct net_device_stats *dev_stats;
unsigned new_activity;
write_lock(&trigger_data->lock);
if (!trigger_data->link_up || !trigger_data->net_dev || (trigger_data->mode & (MODE_TX | MODE_RX)) == 0) {
/* we don't need to do timer work, just reflect link state. */
led_set_brightness(trigger_data->led_cdev, ((trigger_data->mode & MODE_LINK) != 0 && trigger_data->link_up) ? LED_FULL : LED_OFF);
goto no_restart;
}
dev_stats = trigger_data->net_dev->get_stats(trigger_data->net_dev);
new_activity =
((trigger_data->mode & MODE_TX) ? dev_stats->tx_packets : 0) +
((trigger_data->mode & MODE_RX) ? dev_stats->rx_packets : 0);
if (trigger_data->mode & MODE_LINK) {
/* base state is ON (link present) */
/* if there's no link, we don't get this far and the LED is off */
/* OFF -> ON always */
/* ON -> OFF on activity */
if (trigger_data->led_cdev->brightness == LED_OFF) {
led_set_brightness(trigger_data->led_cdev, LED_FULL);
} else if (trigger_data->last_activity != new_activity) {
led_set_brightness(trigger_data->led_cdev, LED_OFF);
}
} else {
/* base state is OFF */
/* ON -> OFF always */
/* OFF -> ON on activity */
if (trigger_data->led_cdev->brightness == LED_FULL) {
led_set_brightness(trigger_data->led_cdev, LED_OFF);
} else if (trigger_data->last_activity != new_activity) {
led_set_brightness(trigger_data->led_cdev, LED_FULL);
}
}
trigger_data->last_activity = new_activity;
mod_timer(&trigger_data->timer, jiffies + trigger_data->interval);
no_restart:
write_unlock(&trigger_data->lock);
}
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;
rwlock_init(&trigger_data->lock);
trigger_data->notifier.notifier_call = netdev_trig_notify;
trigger_data->notifier.priority = 10;
setup_timer(&trigger_data->timer, netdev_trig_timer, (unsigned long) trigger_data);
trigger_data->led_cdev = led_cdev;
trigger_data->net_dev = NULL;
trigger_data->device_name[0] = 0;
trigger_data->mode = 0;
trigger_data->interval = msecs_to_jiffies(50);
trigger_data->link_up = 0;
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_mode);
if (rc)
goto err_out_device_name;
rc = device_create_file(led_cdev->dev, &dev_attr_interval);
if (rc)
goto err_out_mode;
register_netdevice_notifier(&trigger_data->notifier);
return;
err_out_mode:
device_remove_file(led_cdev->dev, &dev_attr_mode);
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_mode);
device_remove_file(led_cdev->dev, &dev_attr_interval);
write_lock(&trigger_data->lock);
if (trigger_data->net_dev) {
dev_put(trigger_data->net_dev);
trigger_data->net_dev = NULL;
}
write_unlock(&trigger_data->lock);
del_timer_sync(&trigger_data->timer);
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("Oliver Jowett <oliver@opencloud.com>");
MODULE_DESCRIPTION("Netdev LED trigger");
MODULE_LICENSE("GPL");