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Commit 8b5e218d authored by Eric Bénard's avatar Eric Bénard Committed by Marc Kleine-Budde
Browse files

can: flexcan: add PM support 



tested on an i.MX257

Signed-off-by: default avatarEric Bénard <eric@eukrea.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 31a67102

drivers/net/can/flexcan.c

+38 −0
Original line number Diff line number Diff line
@@ -1050,6 +1050,42 @@ static struct of_device_id flexcan_of_match[] = { 
	{},

};



#ifdef CONFIG_PM

static int flexcan_suspend(struct platform_device *pdev, pm_message_t state)

{

	struct net_device *dev = platform_get_drvdata(pdev);

	struct flexcan_priv *priv = netdev_priv(dev);



	flexcan_chip_disable(priv);



	if (netif_running(dev)) {

		netif_stop_queue(dev);

		netif_device_detach(dev);

	}

	priv->can.state = CAN_STATE_SLEEPING;



	return 0;

}



static int flexcan_resume(struct platform_device *pdev)

{

	struct net_device *dev = platform_get_drvdata(pdev);

	struct flexcan_priv *priv = netdev_priv(dev);



	priv->can.state = CAN_STATE_ERROR_ACTIVE;

	if (netif_running(dev)) {

		netif_device_attach(dev);

		netif_start_queue(dev);

	}

	flexcan_chip_enable(priv);



	return 0;

}

#else

#define flexcan_suspend NULL

#define flexcan_resume NULL

#endif



static struct platform_driver flexcan_driver = {

	.driver = {

		.name = DRV_NAME,
@@ -1058,6 +1094,8 @@ static struct platform_driver flexcan_driver = { 
	},

	.probe = flexcan_probe,

	.remove = __devexit_p(flexcan_remove),

	.suspend = flexcan_suspend,

	.resume = flexcan_resume,

};



module_platform_driver(flexcan_driver);