247 lines
6.5 KiB
C
247 lines
6.5 KiB
C
/*
|
|
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
|
|
<http://rt2x00.serialmonkey.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the
|
|
Free Software Foundation, Inc.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
Module: rt2x00lib
|
|
Abstract: rt2x00 led specific routines.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
|
|
#include "rt2x00.h"
|
|
#include "rt2x00lib.h"
|
|
|
|
void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, int rssi)
|
|
{
|
|
struct rt2x00_led *led = &rt2x00dev->led_qual;
|
|
unsigned int brightness;
|
|
|
|
if ((led->type != LED_TYPE_QUALITY) || !(led->flags & LED_REGISTERED))
|
|
return;
|
|
|
|
/*
|
|
* Led handling requires a positive value for the rssi,
|
|
* to do that correctly we need to add the correction.
|
|
*/
|
|
rssi += rt2x00dev->rssi_offset;
|
|
|
|
/*
|
|
* Get the rssi level, this is used to convert the rssi
|
|
* to a LED value inside the range LED_OFF - LED_FULL.
|
|
*/
|
|
if (rssi <= 30)
|
|
rssi = 0;
|
|
else if (rssi <= 39)
|
|
rssi = 1;
|
|
else if (rssi <= 49)
|
|
rssi = 2;
|
|
else if (rssi <= 53)
|
|
rssi = 3;
|
|
else if (rssi <= 63)
|
|
rssi = 4;
|
|
else
|
|
rssi = 5;
|
|
|
|
/*
|
|
* Note that we must _not_ send LED_OFF since the driver
|
|
* is going to calculate the value and might use it in a
|
|
* division.
|
|
*/
|
|
brightness = ((LED_FULL / 6) * rssi) + 1;
|
|
if (brightness != led->led_dev.brightness) {
|
|
led->led_dev.brightness_set(&led->led_dev, brightness);
|
|
led->led_dev.brightness = brightness;
|
|
}
|
|
}
|
|
|
|
static void rt2x00led_led_simple(struct rt2x00_led *led, bool enabled)
|
|
{
|
|
unsigned int brightness = enabled ? LED_FULL : LED_OFF;
|
|
|
|
if (!(led->flags & LED_REGISTERED))
|
|
return;
|
|
|
|
led->led_dev.brightness_set(&led->led_dev, brightness);
|
|
led->led_dev.brightness = brightness;
|
|
}
|
|
|
|
void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev, bool enabled)
|
|
{
|
|
if (rt2x00dev->led_qual.type == LED_TYPE_ACTIVITY)
|
|
rt2x00led_led_simple(&rt2x00dev->led_qual, enabled);
|
|
}
|
|
|
|
void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev, bool enabled)
|
|
{
|
|
if (rt2x00dev->led_assoc.type == LED_TYPE_ASSOC)
|
|
rt2x00led_led_simple(&rt2x00dev->led_assoc, enabled);
|
|
}
|
|
|
|
void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev, bool enabled)
|
|
{
|
|
if (rt2x00dev->led_radio.type == LED_TYPE_RADIO)
|
|
rt2x00led_led_simple(&rt2x00dev->led_radio, enabled);
|
|
}
|
|
|
|
static int rt2x00leds_register_led(struct rt2x00_dev *rt2x00dev,
|
|
struct rt2x00_led *led,
|
|
const char *name)
|
|
{
|
|
struct device *device = wiphy_dev(rt2x00dev->hw->wiphy);
|
|
int retval;
|
|
|
|
led->led_dev.name = name;
|
|
led->led_dev.brightness = LED_OFF;
|
|
|
|
retval = led_classdev_register(device, &led->led_dev);
|
|
if (retval) {
|
|
ERROR(rt2x00dev, "Failed to register led handler.\n");
|
|
return retval;
|
|
}
|
|
|
|
led->flags |= LED_REGISTERED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void rt2x00leds_register(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
char name[36];
|
|
int retval;
|
|
unsigned long on_period;
|
|
unsigned long off_period;
|
|
const char *phy_name = wiphy_name(rt2x00dev->hw->wiphy);
|
|
|
|
if (rt2x00dev->led_radio.flags & LED_INITIALIZED) {
|
|
snprintf(name, sizeof(name), "%s-%s::radio",
|
|
rt2x00dev->ops->name, phy_name);
|
|
|
|
retval = rt2x00leds_register_led(rt2x00dev,
|
|
&rt2x00dev->led_radio,
|
|
name);
|
|
if (retval)
|
|
goto exit_fail;
|
|
}
|
|
|
|
if (rt2x00dev->led_assoc.flags & LED_INITIALIZED) {
|
|
snprintf(name, sizeof(name), "%s-%s::assoc",
|
|
rt2x00dev->ops->name, phy_name);
|
|
|
|
retval = rt2x00leds_register_led(rt2x00dev,
|
|
&rt2x00dev->led_assoc,
|
|
name);
|
|
if (retval)
|
|
goto exit_fail;
|
|
}
|
|
|
|
if (rt2x00dev->led_qual.flags & LED_INITIALIZED) {
|
|
snprintf(name, sizeof(name), "%s-%s::quality",
|
|
rt2x00dev->ops->name, phy_name);
|
|
|
|
retval = rt2x00leds_register_led(rt2x00dev,
|
|
&rt2x00dev->led_qual,
|
|
name);
|
|
if (retval)
|
|
goto exit_fail;
|
|
}
|
|
|
|
/*
|
|
* Initialize blink time to default value:
|
|
* On period: 70ms
|
|
* Off period: 30ms
|
|
*/
|
|
if (rt2x00dev->led_radio.led_dev.blink_set) {
|
|
on_period = 70;
|
|
off_period = 30;
|
|
rt2x00dev->led_radio.led_dev.blink_set(
|
|
&rt2x00dev->led_radio.led_dev, &on_period, &off_period);
|
|
}
|
|
|
|
return;
|
|
|
|
exit_fail:
|
|
rt2x00leds_unregister(rt2x00dev);
|
|
}
|
|
|
|
static void rt2x00leds_unregister_led(struct rt2x00_led *led)
|
|
{
|
|
led_classdev_unregister(&led->led_dev);
|
|
|
|
/*
|
|
* This might look weird, but when we are unregistering while
|
|
* suspended the led is already off, and since we haven't
|
|
* fully resumed yet, access to the device might not be
|
|
* possible yet.
|
|
*/
|
|
if (!(led->led_dev.flags & LED_SUSPENDED))
|
|
led->led_dev.brightness_set(&led->led_dev, LED_OFF);
|
|
|
|
led->flags &= ~LED_REGISTERED;
|
|
}
|
|
|
|
void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
if (rt2x00dev->led_qual.flags & LED_REGISTERED)
|
|
rt2x00leds_unregister_led(&rt2x00dev->led_qual);
|
|
if (rt2x00dev->led_assoc.flags & LED_REGISTERED)
|
|
rt2x00leds_unregister_led(&rt2x00dev->led_assoc);
|
|
if (rt2x00dev->led_radio.flags & LED_REGISTERED)
|
|
rt2x00leds_unregister_led(&rt2x00dev->led_radio);
|
|
}
|
|
|
|
static inline void rt2x00leds_suspend_led(struct rt2x00_led *led)
|
|
{
|
|
led_classdev_suspend(&led->led_dev);
|
|
|
|
/* This shouldn't be needed, but just to be safe */
|
|
led->led_dev.brightness_set(&led->led_dev, LED_OFF);
|
|
led->led_dev.brightness = LED_OFF;
|
|
}
|
|
|
|
void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
if (rt2x00dev->led_qual.flags & LED_REGISTERED)
|
|
rt2x00leds_suspend_led(&rt2x00dev->led_qual);
|
|
if (rt2x00dev->led_assoc.flags & LED_REGISTERED)
|
|
rt2x00leds_suspend_led(&rt2x00dev->led_assoc);
|
|
if (rt2x00dev->led_radio.flags & LED_REGISTERED)
|
|
rt2x00leds_suspend_led(&rt2x00dev->led_radio);
|
|
}
|
|
|
|
static inline void rt2x00leds_resume_led(struct rt2x00_led *led)
|
|
{
|
|
led_classdev_resume(&led->led_dev);
|
|
|
|
/* Device might have enabled the LEDS during resume */
|
|
led->led_dev.brightness_set(&led->led_dev, LED_OFF);
|
|
led->led_dev.brightness = LED_OFF;
|
|
}
|
|
|
|
void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
if (rt2x00dev->led_radio.flags & LED_REGISTERED)
|
|
rt2x00leds_resume_led(&rt2x00dev->led_radio);
|
|
if (rt2x00dev->led_assoc.flags & LED_REGISTERED)
|
|
rt2x00leds_resume_led(&rt2x00dev->led_assoc);
|
|
if (rt2x00dev->led_qual.flags & LED_REGISTERED)
|
|
rt2x00leds_resume_led(&rt2x00dev->led_qual);
|
|
}
|