/*
Broadcom B43legacy wireless driver
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
Stefano Brivio <st3@riseup.net>
Michael Buesch <mb@bu3sch.de>
Danny van Dyk <kugelfang@gentoo.org>
Andreas Jaggi <andreas.jaggi@waterwave.ch>
Copyright (c) 2007 Larry Finger <Larry.Finger@lwfinger.net>
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; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "leds.h"
#include "b43legacy.h"
#include "main.h"
static void b43legacy_led_changestate(struct b43legacy_led *led)
{
struct b43legacy_wldev *dev = led->dev;
const int index = led->index;
u16 ledctl;
B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS));
B43legacy_WARN_ON(!led->blink_interval);
ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
ledctl ^= (1 << index);
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
}
static void b43legacy_led_blink(unsigned long d)
{
struct b43legacy_led *led = (struct b43legacy_led *)d;
struct b43legacy_wldev *dev = led->dev;
unsigned long flags;
spin_lock_irqsave(&dev->wl->leds_lock, flags);
if (led->blink_interval) {
b43legacy_led_changestate(led);
mod_timer(&led->blink_timer, jiffies + led->blink_interval);
}
spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
}
static void b43legacy_led_blink_start(struct b43legacy_led *led,
unsigned long interval)
{
if (led->blink_interval)
return;
led->blink_interval = interval;
b43legacy_led_changestate(led);
led->blink_timer.expires = jiffies + interval;
add_timer(&led->blink_timer);
}
static void b43legacy_led_blink_stop(struct b43legacy_led *led, int sync)
{
struct b43legacy_wldev *dev = led->dev;
const int index = led->index;
u16 ledctl;
if (!led->blink_interval)
return;
if (unlikely(sync))
del_timer_sync(&led->blink_timer);
else
del_timer(&led->blink_timer);
led->blink_interval = 0;
/* Make sure the LED is turned off. */
B43legacy_WARN_ON(!(index >= 0 && index < B43legacy_NR_LEDS));
ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
if (led->activelow)
ledctl |= (1 << index);
else
ledctl &= ~(1 << index);
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
}
static void b43legacy_led_init_hardcoded(struct b43legacy_wldev *dev,
struct b43legacy_led *led,
int led_index)
{
struct ssb_bus *bus = dev->dev->bus;
/* This function is called, if the behaviour (and activelow)
* information for a LED is missing in the SPROM.
* We hardcode the behaviour values for various devices here.
* Note that the B43legacy_LED_TEST_XXX behaviour values can
* be used to figure out which led is mapped to which index.
*/
switch (led_index) {
case 0:
led->behaviour = B43legacy_LED_ACTIVITY;
led->activelow = 1;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
led->behaviour = B43legacy_LED_RADIO_ALL;
break;
case 1:
led->behaviour = B43legacy_LED_RADIO_B;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
led->behaviour = B43legacy_LED_ASSOC;
break;
case 2:
led->behaviour = B43legacy_LED_RADIO_A;
break;
case 3:
led->behaviour = B43legacy_LED_OFF;
break;
default:
B43legacy_BUG_ON(1);
}
}
int b43legacy_leds_init(struct b43legacy_wldev *dev)
{
struct b43legacy_led *led;
u8 sprom[4];
int i;
sprom[0] = dev->dev->bus->sprom.r1.gpio0;
sprom[1] = dev->dev->bus->sprom.r1.gpio1;
sprom[2] = dev->dev->bus->sprom.r1.gpio2;
sprom[3] = dev->dev->bus->sprom.r1.gpio3;
for (i = 0; i < B43legacy_NR_LEDS; i++) {
led = &(dev->leds[i]);
led->index = i;
led->dev = dev;
setup_timer(&led->blink_timer,
b43legacy_led_blink,
(unsigned long)led);
if (sprom[i] == 0xFF)
b43legacy_led_init_hardcoded(dev, led, i);
else {
led->behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
led->activelow = !!(sprom[i] &
B43legacy_LED_ACTIVELOW);
}
}
return 0;
}
void b43legacy_leds_exit(struct b43legacy_wldev *dev)
{
struct b43legacy_led *led;
int i;
for (i = 0; i < B43legacy_NR_LEDS; i++) {
led = &(dev->leds[i]);
b43legacy_led_blink_stop(led, 1);
}
b43legacy_leds_switch_all(dev, 0);
}
void b43legacy_leds_update(struct b43legacy_wldev *dev, int activity)
{
struct b43legacy_led *led;
struct b43legacy_phy *phy = &dev->phy;
const int transferring = (jiffies - dev->stats.last_tx)
< B43legacy_LED_XFER_THRES;
int i;
int turn_on;
unsigned long interval = 0;
u16 ledctl;
unsigned long flags;
bool radio_enabled = (phy->radio_on && dev->radio_hw_enable);
spin_lock_irqsave(&dev->wl->leds_lock, flags);
ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
for (i = 0; i < B43legacy_NR_LEDS; i++) {
led = &(dev->leds[i]);
turn_on = 0;
switch (led->behaviour) {
case B43legacy_LED_INACTIVE:
continue;
case B43legacy_LED_OFF:
break;
case B43legacy_LED_ON:
turn_on = 1;
break;
case B43legacy_LED_ACTIVITY:
turn_on = activity;
break;
case B43legacy_LED_RADIO_ALL:
turn_on = radio_enabled;
break;
case B43legacy_LED_RADIO_A:
break;
case B43legacy_LED_RADIO_B:
turn_on = radio_enabled;
break;
case B43legacy_LED_MODE_BG:
if (phy->type == B43legacy_PHYTYPE_G && radio_enabled)
turn_on = 1;
break;
case B43legacy_LED_TRANSFER:
if (transferring)
b43legacy_led_blink_start(led,
B43legacy_LEDBLINK_MEDIUM);
else
b43legacy_led_blink_stop(led, 0);
continue;
case B43legacy_LED_APTRANSFER:
if (b43legacy_is_mode(dev->wl,
IEEE80211_IF_TYPE_AP)) {
if (transferring) {
interval = B43legacy_LEDBLINK_FAST;
turn_on = 1;
}
} else {
turn_on = 1;
if (transferring)
interval = B43legacy_LEDBLINK_FAST;
else
turn_on = 0;
}
if (turn_on)
b43legacy_led_blink_start(led, interval);
else
b43legacy_led_blink_stop(led, 0);
continue;
case B43legacy_LED_WEIRD:
break;
case B43legacy_LED_ASSOC:
turn_on = 1;
#ifdef CONFIG_B43LEGACY_DEBUG
case B43legacy_LED_TEST_BLINKSLOW:
b43legacy_led_blink_start(led, B43legacy_LEDBLINK_SLOW);
continue;
case B43legacy_LED_TEST_BLINKMEDIUM:
b43legacy_led_blink_start(led,
B43legacy_LEDBLINK_MEDIUM);
continue;
case B43legacy_LED_TEST_BLINKFAST:
b43legacy_led_blink_start(led, B43legacy_LEDBLINK_FAST);
continue;
#endif /* CONFIG_B43LEGACY_DEBUG */
default:
B43legacy_BUG_ON(1);
};
if (led->activelow)
turn_on = !turn_on;
if (turn_on)
ledctl |= (1 << i);
else
ledctl &= ~(1 << i);
}
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
}
void b43legacy_leds_switch_all(struct b43legacy_wldev *dev, int on)
{
struct b43legacy_led *led;
u16 ledctl;
int i;
int bit_on;
unsigned long flags;
spin_lock_irqsave(&dev->wl->leds_lock, flags);
ledctl = b43legacy_read16(dev, B43legacy_MMIO_GPIO_CONTROL);
for (i = 0; i < B43legacy_NR_LEDS; i++) {
led = &(dev->leds[i]);
if (led->behaviour == B43legacy_LED_INACTIVE)
continue;
if (on)
bit_on = led->activelow ? 0 : 1;
else
bit_on = led->activelow ? 1 : 0;
if (bit_on)
ledctl |= (1 << i);
else
ledctl &= ~(1 << i);
}
b43legacy_write16(dev, B43legacy_MMIO_GPIO_CONTROL, ledctl);
spin_unlock_irqrestore(&dev->wl->leds_lock, flags);
}
