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authorAndrew Victor <andrew@sanpeople.com>2006-06-20 12:19:13 +0200
committerJeff Garzik <jeff@garzik.org>2006-06-22 22:56:21 -0400
commit00e5edcbfdb7030f6cbb8d5d89fdc2848133a182 (patch)
treedb1e8bc9e3ff9adbf78b7695bd566f9681567e98 /drivers
parent427d269f17fd02d192e9ae3bd93bdc07790fa02c (diff)
downloadop-kernel-dev-00e5edcbfdb7030f6cbb8d5d89fdc2848133a182.zip
op-kernel-dev-00e5edcbfdb7030f6cbb8d5d89fdc2848133a182.tar.gz
[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.c46
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,
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