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| author | Andrew Victor <andrew@sanpeople.com> | 2006-06-20 12:19:13 +0200 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-06-22 22:56:21 -0400 |
| commit | 00e5edcbfdb7030f6cbb8d5d89fdc2848133a182 (patch) | |
| tree | db1e8bc9e3ff9adbf78b7695bd566f9681567e98 /drivers | |
| parent | 427d269f17fd02d192e9ae3bd93bdc07790fa02c (diff) | |
| download | kernel_samsung_smdk4412-00e5edcbfdb7030f6cbb8d5d89fdc2848133a182.zip kernel_samsung_smdk4412-00e5edcbfdb7030f6cbb8d5d89fdc2848133a182.tar.gz kernel_samsung_smdk4412-00e5edcbfdb7030f6cbb8d5d89fdc2848133a182.tar.bz2 | |
[PATCH] AT91RM9200 Ethernet #4: Suspend/Resume
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/arm/at91_ether.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/net/arm/at91_ether.c b/drivers/net/arm/at91_ether.c index d081241..613005a 100644 --- a/drivers/net/arm/at91_ether.c +++ b/drivers/net/arm/at91_ether.c @@ -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, |