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can: at91_can: add LED trigger support 

Add support for canbus activity led indicators on at91_can devices by
calling appropriate can_led functions.

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

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 18:50:59 +01:00 committed by Marc Kleine-Budde
parent adccadb92f
commit 4723f2b8a1
1 changed files with 10 additions and 0 deletions
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10
drivers/net/can/at91_can.c
View File

@ -37,6 +37,7 @@
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/can/led.h>
#define AT91_MB_MASK(i) ((1 << (i)) - 1)
@ -641,6 +642,8 @@ static void at91_read_msg(struct net_device *dev, unsigned int mb)
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
can_led_event(dev, CAN_LED_EVENT_RX);
}
/**
@ -875,6 +878,7 @@ static void at91_irq_tx(struct net_device *dev, u32 reg_sr)
/* _NOTE_: subtract AT91_MB_TX_FIRST offset from mb! */
can_get_echo_skb(dev, mb - get_mb_tx_first(priv));
dev->stats.tx_packets++;
can_led_event(dev, CAN_LED_EVENT_TX);
}
}
@ -1128,6 +1132,8 @@ static int at91_open(struct net_device *dev)
goto out_close;
}
can_led_event(dev, CAN_LED_EVENT_OPEN);
/* start chip and queuing */
at91_chip_start(dev);
napi_enable(&priv->napi);
@ -1159,6 +1165,8 @@ static int at91_close(struct net_device *dev)
close_candev(dev);
can_led_event(dev, CAN_LED_EVENT_STOP);
return 0;
}
@ -1321,6 +1329,8 @@ static int at91_can_probe(struct platform_device *pdev)
goto exit_free;
}
devm_can_led_init(dev);
dev_info(&pdev->dev, "device registered (reg_base=%p, irq=%d)\n",
priv->reg_base, dev->irq);