Adds power-management (suspend/resume) support to the AT91RM9200
Ethernet driver.
Patch from David Brownell.
Signed-off-by: Andrew Victor <[EMAIL PROTECTED]>
diff -urN linux-2.6.17-rmk.orig/drivers/net/arm/at91_ether.c
linux-2.6.17-rmk/drivers/net/arm/at91_ether.c
--- linux-2.6.17-rmk.orig/drivers/net/arm/at91_ether.c Tue Jun 20 11:16:31 2006
+++ linux-2.6.17-rmk/drivers/net/arm/at91_ether.c Tue Jun 20 11:18:45 2006
@@ -1128,10 +1128,54 @@
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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