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Commit 00e5edcb authored by Andrew Victor's avatar Andrew Victor Committed by Jeff Garzik
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[PATCH] AT91RM9200 Ethernet #4: Suspend/Resume 



Adds power-management (suspend/resume) support to the AT91RM9200
Ethernet driver.
Patch from David Brownell.

Signed-off-by: default avatarAndrew Victor <andrew@sanpeople.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 427d269f

drivers/net/arm/at91_ether.c

+45 −1
Original line number Diff line number Diff line
@@ -1128,10 +1128,54 @@ static int __devexit at91ether_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM



static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)

{

	struct at91_private *lp = (struct at91_private *) at91_dev->priv;

	struct net_device *net_dev = platform_get_drvdata(pdev);

	int phy_irq = lp->board_data.phy_irq_pin;



	if (netif_running(net_dev)) {

		if (phy_irq)

			disable_irq(phy_irq);



		netif_stop_queue(net_dev);

		netif_device_detach(net_dev);



		clk_disable(lp->ether_clk);

	}

	return 0;

}



static int at91ether_resume(struct platform_device *pdev)

{

	struct at91_private *lp = (struct at91_private *) at91_dev->priv;

	struct net_device *net_dev = platform_get_drvdata(pdev);

	int phy_irq = lp->board_data.phy_irq_pin;



	if (netif_running(net_dev)) {

		clk_enable(lp->ether_clk);



		netif_device_attach(net_dev);

		netif_start_queue(net_dev);



		if (phy_irq)

			enable_irq(phy_irq);

	}

	return 0;

}



#else

#define at91ether_suspend	NULL

#define at91ether_resume	NULL

#endif



static struct platform_driver at91ether_driver = {

	.probe		= at91ether_probe,

	.remove		= __devexit_p(at91ether_remove),

	/* FIXME:  support suspend and resume */

	.suspend	= at91ether_suspend,

	.resume		= at91ether_resume,

	.driver		= {

		.name	= DRV_NAME,

		.owner	= THIS_MODULE,