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can: add combined rx/tx LED trigger support

Bladeren bron 
Add <ifname>-rxtx trigger, that will be activated both for tx
as rx events. This trigger mimics "activity" LED for Ethernet
devices.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Yegor Yefremov
2015-03-16 09:38:13 +01:00
gecommit door Marc Kleine-Budde
bovenliggende fba6f9117a
commit c54eb70e3b
3 gewijzigde bestanden met toevoegingen van 25 en 5 verwijderingen
Download Patch-bestand Download Diff-bestand Expand all files Collapse all files

22
drivers/net/can/led.c
Bestand weergeven

@@ -30,20 +30,28 @@ void can_led_event(struct net_device *netdev, enum can_led_event event)
case CAN_LED_EVENT_OPEN:
led_trigger_event(priv->tx_led_trig, LED_FULL);
led_trigger_event(priv->rx_led_trig, LED_FULL);
led_trigger_event(priv->rxtx_led_trig, LED_FULL);
break;
case CAN_LED_EVENT_STOP:
led_trigger_event(priv->tx_led_trig, LED_OFF);
led_trigger_event(priv->rx_led_trig, LED_OFF);
led_trigger_event(priv->rxtx_led_trig, LED_OFF);
break;
case CAN_LED_EVENT_TX:
if (led_delay)
if (led_delay) {
led_trigger_blink_oneshot(priv->tx_led_trig,
&led_delay, &led_delay, 1);
led_trigger_blink_oneshot(priv->rxtx_led_trig,
&led_delay, &led_delay, 1);
}
break;
case CAN_LED_EVENT_RX:
if (led_delay)
if (led_delay) {
led_trigger_blink_oneshot(priv->rx_led_trig,
&led_delay, &led_delay, 1);
led_trigger_blink_oneshot(priv->rxtx_led_trig,
&led_delay, &led_delay, 1);
}
break;
}
}
@@ -55,6 +63,7 @@ static void can_led_release(struct device *gendev, void *res)
led_trigger_unregister_simple(priv->tx_led_trig);
led_trigger_unregister_simple(priv->rx_led_trig);
led_trigger_unregister_simple(priv->rxtx_led_trig);
}
/* Register CAN LED triggers for a CAN device
@@ -76,11 +85,15 @@ void devm_can_led_init(struct net_device *netdev)
"%s-tx", netdev->name);
snprintf(priv->rx_led_trig_name, sizeof(priv->rx_led_trig_name),
"%s-rx", netdev->name);
snprintf(priv->rxtx_led_trig_name, sizeof(priv->rxtx_led_trig_name),
"%s-rxtx", netdev->name);
led_trigger_register_simple(priv->tx_led_trig_name,
&priv->tx_led_trig);
led_trigger_register_simple(priv->rx_led_trig_name,
&priv->rx_led_trig);
led_trigger_register_simple(priv->rxtx_led_trig_name,
&priv->rxtx_led_trig);
devres_add(&netdev->dev, res);
}
@@ -97,7 +110,7 @@ static int can_led_notifier(struct notifier_block *nb, unsigned long msg,
if (!priv)
return NOTIFY_DONE;
if (!priv->tx_led_trig || !priv->rx_led_trig)
if (!priv->tx_led_trig || !priv->rx_led_trig || !priv->rxtx_led_trig)
return NOTIFY_DONE;
if (msg == NETDEV_CHANGENAME) {
@@ -106,6 +119,9 @@ static int can_led_notifier(struct notifier_block *nb, unsigned long msg,
snprintf(name, sizeof(name), "%s-rx", netdev->name);
led_trigger_rename_static(name, priv->rx_led_trig);
snprintf(name, sizeof(name), "%s-rxtx", netdev->name);
led_trigger_rename_static(name, priv->rxtx_led_trig);
}
return NOTIFY_DONE;