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can: flexcan: add LED trigger support 

Add support for canbus activity led indicators on flexcan 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 18:50:58 +01:00 committed by Marc Kleine-Budde
parent a1ef7bd9fc
commit adccadb92f
1 changed files with 11 additions and 0 deletions
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11
drivers/net/can/flexcan.c
View File

@ -23,6 +23,7 @@
#include <linux/can.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/can/led.h>
#include <linux/can/platform/flexcan.h>
#include <linux/clk.h>
#include <linux/delay.h>
@ -564,6 +565,8 @@ static int flexcan_read_frame(struct net_device *dev)
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
can_led_event(dev, CAN_LED_EVENT_RX);
return 1;
}
@ -652,6 +655,7 @@ static irqreturn_t flexcan_irq(int irq, void *dev_id)
if (reg_iflag1 & (1 << FLEXCAN_TX_BUF_ID)) {
stats->tx_bytes += can_get_echo_skb(dev, 0);
stats->tx_packets++;
can_led_event(dev, CAN_LED_EVENT_TX);
flexcan_write((1 << FLEXCAN_TX_BUF_ID), &regs->iflag1);
netif_wake_queue(dev);
}
@ -865,6 +869,9 @@ static int flexcan_open(struct net_device *dev)
err = flexcan_chip_start(dev);
if (err)
goto out_close;
can_led_event(dev, CAN_LED_EVENT_OPEN);
napi_enable(&priv->napi);
netif_start_queue(dev);
@ -893,6 +900,8 @@ static int flexcan_close(struct net_device *dev)
close_candev(dev);
can_led_event(dev, CAN_LED_EVENT_STOP);
return 0;
}
@ -1092,6 +1101,8 @@ static int flexcan_probe(struct platform_device *pdev)
goto failed_register;
}
devm_can_led_init(dev);
dev_info(&pdev->dev, "device registered (reg_base=%p, irq=%d)\n",
priv->base, dev->irq);