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can: sja1000: add LED trigger support 

Add support for canbus activity led indicators on sja1000 devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.

Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Fabio Baltieri 2012-12-18 18:51:03 +01:00 committed by Marc Kleine-Budde
parent eb072a9bae
commit a04282f54b
1 changed files with 16 additions and 1 deletions
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17
drivers/net/can/sja1000/sja1000.c
View File

@ -60,6 +60,7 @@
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/can/led.h>
#include "sja1000.h"
@ -368,6 +369,8 @@ static void sja1000_rx(struct net_device *dev)
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
can_led_event(dev, CAN_LED_EVENT_RX);
}
static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
@ -521,6 +524,7 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id)
can_get_echo_skb(dev, 0);
}
netif_wake_queue(dev);
can_led_event(dev, CAN_LED_EVENT_TX);
}
if (isrc & IRQ_RI) {
/* receive interrupt */
@ -575,6 +579,8 @@ static int sja1000_open(struct net_device *dev)
/* init and start chi */
sja1000_start(dev);
can_led_event(dev, CAN_LED_EVENT_OPEN);
netif_start_queue(dev);
return 0;
@ -592,6 +598,8 @@ static int sja1000_close(struct net_device *dev)
close_candev(dev);
can_led_event(dev, CAN_LED_EVENT_STOP);
return 0;
}
@ -639,6 +647,8 @@ static const struct net_device_ops sja1000_netdev_ops = {
int register_sja1000dev(struct net_device *dev)
{
int ret;
if (!sja1000_probe_chip(dev))
return -ENODEV;
@ -648,7 +658,12 @@ int register_sja1000dev(struct net_device *dev)
set_reset_mode(dev);
chipset_init(dev);
return register_candev(dev);
ret = register_candev(dev);
if (!ret)
devm_can_led_init(dev);
return ret;
}
EXPORT_SYMBOL_GPL(register_sja1000dev);