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Commit adccadb9 authored by Fabio Baltieri's avatar Fabio Baltieri Committed by Marc Kleine-Budde
Browse files

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: default avatarFabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent a1ef7bd9

drivers/net/can/flexcan.c

+11 −0
Original line number Diff line number Diff line
@@ -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);