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macb: Basic suspend/resume support 

This implements suspend and resume callbacks for the macb driver. We may
have to do some more to gracefully shut the MAC down, but this at least
prevents the macb from waking the system when hooked up to a busy
network.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Patrice Vilchez <patrice.vilchez@rfo.atmel.com>
Cc: Nicolas FERRE <nicolas.ferre@rfo.atmel.com>
This commit is contained in:
Haavard Skinnemoen 2008-03-04 13:39:29 +01:00 committed by Haavard Skinnemoen
parent e1c609efbc
commit c1f598fd71
1 changed files with 37 additions and 0 deletions
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37
drivers/net/macb.c
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@ -1277,8 +1277,45 @@ static int __exit macb_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM
static int macb_suspend(struct platform_device *pdev, pm_message_t state)
{
struct net_device *netdev = platform_get_drvdata(pdev);
struct macb *bp = netdev_priv(netdev);
netif_device_detach(netdev);
#ifndef CONFIG_ARCH_AT91
clk_disable(bp->hclk);
#endif
clk_disable(bp->pclk);
return 0;
}
static int macb_resume(struct platform_device *pdev)
{
struct net_device *netdev = platform_get_drvdata(pdev);
struct macb *bp = netdev_priv(netdev);
clk_enable(bp->pclk);
#ifndef CONFIG_ARCH_AT91
clk_enable(bp->hclk);
#endif
netif_device_attach(netdev);
return 0;
}
#else
#define macb_suspend NULL
#define macb_resume NULL
#endif
static struct platform_driver macb_driver = {
.remove = __exit_p(macb_remove),
.suspend = macb_suspend,
.resume = macb_resume,
.driver = {
.name = "macb",
.owner = THIS_MODULE,