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[PATCH] AT91RM9200 Ethernet #4: Suspend/Resume

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

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Andrew Victor 2006-06-20 12:19:13 +02:00 committed by Jeff Garzik
parent 427d269f17
commit 00e5edcbfd
1 changed files with 45 additions and 1 deletions
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46
drivers/net/arm/at91_ether.c
View file

@ -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,