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Commit eb072a9b authored by Fabio Baltieri's avatar Fabio Baltieri Committed by Marc Kleine-Budde
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can: mcp251x: add LED trigger support 



Add support for canbus activity led indicators on mcp251x devices by
calling appropriate can_led functions.

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

Cc: Christian Pellegrin <chripell@fsfe.org>
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 5090f805

drivers/net/can/mcp251x.c

+19 −4
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ 


#include <linux/can/core.h>

#include <linux/can/dev.h>

#include <linux/can/led.h>

#include <linux/can/platform/mcp251x.h>

#include <linux/completion.h>

#include <linux/delay.h>
@@ -494,6 +495,9 @@ static void mcp251x_hw_rx(struct spi_device *spi, int buf_idx) 


	priv->net->stats.rx_packets++;

	priv->net->stats.rx_bytes += frame->can_dlc;



	can_led_event(priv->net, CAN_LED_EVENT_RX);



	netif_rx_ni(skb);

}
@@ -707,6 +711,8 @@ static int mcp251x_stop(struct net_device *net) 


	mutex_unlock(&priv->mcp_lock);



	can_led_event(net, CAN_LED_EVENT_STOP);



	return 0;

}
@@ -905,6 +911,7 @@ static irqreturn_t mcp251x_can_ist(int irq, void *dev_id) 
		if (intf & CANINTF_TX) {

			net->stats.tx_packets++;

			net->stats.tx_bytes += priv->tx_len - 1;

			can_led_event(net, CAN_LED_EVENT_TX);

			if (priv->tx_len) {

				can_get_echo_skb(net, 0);

				priv->tx_len = 0;
@@ -968,6 +975,9 @@ static int mcp251x_open(struct net_device *net) 
		mcp251x_open_clean(net);

		goto open_unlock;

	}



	can_led_event(net, CAN_LED_EVENT_OPEN);



	netif_wake_queue(net);



open_unlock:
@@ -1077,10 +1087,15 @@ static int mcp251x_can_probe(struct spi_device *spi) 
		pdata->transceiver_enable(0);



	ret = register_candev(net);

	if (!ret) {

	if (ret)

		goto error_probe;



	devm_can_led_init(net);



	dev_info(&spi->dev, "probed\n");



	return ret;

	}



error_probe:

	if (!mcp251x_enable_dma)

		kfree(priv->spi_rx_buf);