- 根目录:
- drivers
- net
- wireless
- b43
- leds.c
#include "b43.h"
#include "leds.h"
#include "rfkill.h"
static void b43_led_turn_on(struct b43_wldev *dev, u8 led_index,
bool activelow)
{
u16 ctl;
ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
if (activelow)
ctl &= ~(1 << led_index);
else
ctl |= (1 << led_index);
b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
}
static void b43_led_turn_off(struct b43_wldev *dev, u8 led_index,
bool activelow)
{
u16 ctl;
ctl = b43_read16(dev, B43_MMIO_GPIO_CONTROL);
if (activelow)
ctl |= (1 << led_index);
else
ctl &= ~(1 << led_index);
b43_write16(dev, B43_MMIO_GPIO_CONTROL, ctl);
}
static void b43_led_update(struct b43_wldev *dev,
struct b43_led *led)
{
bool radio_enabled;
bool turn_on;
if (!led->wl)
return;
radio_enabled = (dev->phy.radio_on && dev->radio_hw_enable);
if (radio_enabled)
turn_on = atomic_read(&led->state) != LED_OFF;
else
turn_on = false;
if (turn_on == led->hw_state)
return;
led->hw_state = turn_on;
if (turn_on)
b43_led_turn_on(dev, led->index, led->activelow);
else
b43_led_turn_off(dev, led->index, led->activelow);
}
static void b43_leds_work(struct work_struct *work)
{
struct b43_leds *leds = container_of(work, struct b43_leds, work);
struct b43_wl *wl = container_of(leds, struct b43_wl, leds);
struct b43_wldev *dev;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (unlikely(!dev || b43_status(dev) < B43_STAT_STARTED))
goto out_unlock;
b43_led_update(dev, &wl->leds.led_tx);
b43_led_update(dev, &wl->leds.led_rx);
b43_led_update(dev, &wl->leds.led_radio);
b43_led_update(dev, &wl->leds.led_assoc);
out_unlock:
mutex_unlock(&wl->mutex);
}
static void b43_led_brightness_set(struct led_classdev *led_dev,
enum led_brightness brightness)
{
struct b43_led *led = container_of(led_dev, struct b43_led, led_dev);
struct b43_wl *wl = led->wl;
if (likely(!wl->leds.stop)) {
atomic_set(&led->state, brightness);
ieee80211_queue_work(wl->hw, &wl->leds.work);
}
}
static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
const char *name, const char *default_trigger,
u8 led_index, bool activelow)
{
int err;
if (led->wl)
return -EEXIST;
if (!default_trigger)
return -EINVAL;
led->wl = dev->wl;
led->index = led_index;
led->activelow = activelow;
strncpy(led->name, name, sizeof(led->name));
atomic_set(&led->state, 0);
led->led_dev.name = led->name;
led->led_dev.default_trigger = default_trigger;
led->led_dev.brightness_set = b43_led_brightness_set;
err = led_classdev_register(dev->dev->dev, &led->led_dev);
if (err) {
b43warn(dev->wl, "LEDs: Failed to register %s\n", name);
led->wl = NULL;
return err;
}
return 0;
}
static void b43_unregister_led(struct b43_led *led)
{
if (!led->wl)
return;
led_classdev_unregister(&led->led_dev);
led->wl = NULL;
}
static void b43_map_led(struct b43_wldev *dev,
u8 led_index,
enum b43_led_behaviour behaviour,
bool activelow)
{
struct ieee80211_hw *hw = dev->wl->hw;
char name[B43_LED_MAX_NAME_LEN + 1];
switch (behaviour) {
case B43_LED_INACTIVE:
case B43_LED_OFF:
case B43_LED_ON:
break;
case B43_LED_ACTIVITY:
case B43_LED_TRANSFER:
case B43_LED_APTRANSFER:
snprintf(name, sizeof(name),
"b43-%s::tx", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->wl->leds.led_tx, name,
ieee80211_get_tx_led_name(hw),
led_index, activelow);
snprintf(name, sizeof(name),
"b43-%s::rx", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->wl->leds.led_rx, name,
ieee80211_get_rx_led_name(hw),
led_index, activelow);
break;
case B43_LED_RADIO_ALL:
case B43_LED_RADIO_A:
case B43_LED_RADIO_B:
case B43_LED_MODE_BG:
snprintf(name, sizeof(name),
"b43-%s::radio", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->wl->leds.led_radio, name,
ieee80211_get_radio_led_name(hw),
led_index, activelow);
break;
case B43_LED_WEIRD:
case B43_LED_ASSOC:
snprintf(name, sizeof(name),
"b43-%s::assoc", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->wl->leds.led_assoc, name,
ieee80211_get_assoc_led_name(hw),
led_index, activelow);
break;
default:
b43warn(dev->wl, "LEDs: Unknown behaviour 0x%02X\n",
behaviour);
break;
}
}
static void b43_led_get_sprominfo(struct b43_wldev *dev,
unsigned int led_index,
enum b43_led_behaviour *behaviour,
bool *activelow)
{
u8 sprom[4];
sprom[0] = dev->dev->bus_sprom->gpio0;
sprom[1] = dev->dev->bus_sprom->gpio1;
sprom[2] = dev->dev->bus_sprom->gpio2;
sprom[3] = dev->dev->bus_sprom->gpio3;
if (sprom[led_index] == 0xFF) {
*activelow = false;
switch (led_index) {
case 0:
*behaviour = B43_LED_ACTIVITY;
*activelow = true;
if (dev->dev->board_vendor == PCI_VENDOR_ID_COMPAQ)
*behaviour = B43_LED_RADIO_ALL;
break;
case 1:
*behaviour = B43_LED_RADIO_B;
if (dev->dev->board_vendor == PCI_VENDOR_ID_ASUSTEK)
*behaviour = B43_LED_ASSOC;
break;
case 2:
*behaviour = B43_LED_RADIO_A;
break;
case 3:
*behaviour = B43_LED_OFF;
break;
default:
*behaviour = B43_LED_OFF;
B43_WARN_ON(1);
return;
}
} else {
*behaviour = sprom[led_index] & B43_LED_BEHAVIOUR;
*activelow = !!(sprom[led_index] & B43_LED_ACTIVELOW);
}
}
void b43_leds_init(struct b43_wldev *dev)
{
struct b43_led *led;
unsigned int i;
enum b43_led_behaviour behaviour;
bool activelow;
led = &dev->wl->leds.led_radio;
if (led->wl) {
if (dev->phy.radio_on && b43_is_hw_radio_enabled(dev)) {
b43_led_turn_on(dev, led->index, led->activelow);
led->hw_state = true;
atomic_set(&led->state, 1);
} else {
b43_led_turn_off(dev, led->index, led->activelow);
led->hw_state = false;
atomic_set(&led->state, 0);
}
}
led = &dev->wl->leds.led_tx;
if (led->wl) {
b43_led_turn_off(dev, led->index, led->activelow);
led->hw_state = false;
atomic_set(&led->state, 0);
}
led = &dev->wl->leds.led_rx;
if (led->wl) {
b43_led_turn_off(dev, led->index, led->activelow);
led->hw_state = false;
atomic_set(&led->state, 0);
}
led = &dev->wl->leds.led_assoc;
if (led->wl) {
b43_led_turn_off(dev, led->index, led->activelow);
led->hw_state = false;
atomic_set(&led->state, 0);
}
for (i = 0; i < B43_MAX_NR_LEDS; i++) {
b43_led_get_sprominfo(dev, i, &behaviour, &activelow);
switch (behaviour) {
case B43_LED_OFF:
b43_led_turn_off(dev, i, activelow);
break;
case B43_LED_ON:
b43_led_turn_on(dev, i, activelow);
break;
default:
break;
}
}
dev->wl->leds.stop = 0;
}
void b43_leds_exit(struct b43_wldev *dev)
{
struct b43_leds *leds = &dev->wl->leds;
b43_led_turn_off(dev, leds->led_tx.index, leds->led_tx.activelow);
b43_led_turn_off(dev, leds->led_rx.index, leds->led_rx.activelow);
b43_led_turn_off(dev, leds->led_assoc.index, leds->led_assoc.activelow);
b43_led_turn_off(dev, leds->led_radio.index, leds->led_radio.activelow);
}
void b43_leds_stop(struct b43_wldev *dev)
{
struct b43_leds *leds = &dev->wl->leds;
leds->stop = 1;
cancel_work_sync(&leds->work);
}
void b43_leds_register(struct b43_wldev *dev)
{
unsigned int i;
enum b43_led_behaviour behaviour;
bool activelow;
INIT_WORK(&dev->wl->leds.work, b43_leds_work);
for (i = 0; i < B43_MAX_NR_LEDS; i++) {
b43_led_get_sprominfo(dev, i, &behaviour, &activelow);
b43_map_led(dev, i, behaviour, activelow);
}
}
void b43_leds_unregister(struct b43_wl *wl)
{
struct b43_leds *leds = &wl->leds;
b43_unregister_led(&leds->led_tx);
b43_unregister_led(&leds->led_rx);
b43_unregister_led(&leds->led_assoc);
b43_unregister_led(&leds->led_radio);
}
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