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linux-next/drivers/net/wireless/rt2x00/rt2x00leds.c
Jeff Kirsher a05b8c580c rt2x00: Fix FSF address in file headers
Several files refer to an old address for the Free Software Foundation
in the file header comment.  Resolve by replacing the address with
the URL <http://www.gnu.org/licenses/> so that we do not have to keep
updating the header comments anytime the address changes.

CC: linux-wireless@vger.kernel.org
CC: Ivo van Doorn <IvDoorn@gmail.com>
CC: Gertjan van Wingerde <gwingerde@gmail.com>
CC: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-12-11 10:56:19 -05:00

245 lines
6.4 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, see <http://www.gnu.org/licenses/>.
*/
/*
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) {
rt2x00_err(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);
}