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authorAndrew Victor <andrew@sanpeople.com>2006-06-20 06:19:13 -0400
committerJeff Garzik <jeff@garzik.org>2006-06-22 22:56:21 -0400
commit00e5edcbfdb7030f6cbb8d5d89fdc2848133a182 (patch)
treedb1e8bc9e3ff9adbf78b7695bd566f9681567e98 /drivers
parent427d269f17fd02d192e9ae3bd93bdc07790fa02c (diff)
[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 d081241f613d..613005a0285d 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)
1128 return 0; 1128 return 0;
1129} 1129}
1130 1130
1131#ifdef CONFIG_PM
1132
1133static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)
1134{
1135 struct at91_private *lp = (struct at91_private *) at91_dev->priv;
1136 struct net_device *net_dev = platform_get_drvdata(pdev);
1137 int phy_irq = lp->board_data.phy_irq_pin;
1138
1139 if (netif_running(net_dev)) {
1140 if (phy_irq)
1141 disable_irq(phy_irq);
1142
1143 netif_stop_queue(net_dev);
1144 netif_device_detach(net_dev);
1145
1146 clk_disable(lp->ether_clk);
1147 }
1148 return 0;
1149}
1150
1151static int at91ether_resume(struct platform_device *pdev)
1152{
1153 struct at91_private *lp = (struct at91_private *) at91_dev->priv;
1154 struct net_device *net_dev = platform_get_drvdata(pdev);
1155 int phy_irq = lp->board_data.phy_irq_pin;
1156
1157 if (netif_running(net_dev)) {
1158 clk_enable(lp->ether_clk);
1159
1160 netif_device_attach(net_dev);
1161 netif_start_queue(net_dev);
1162
1163 if (phy_irq)
1164 enable_irq(phy_irq);
1165 }
1166 return 0;
1167}
1168
1169#else
1170#define at91ether_suspend NULL
1171#define at91ether_resume NULL
1172#endif
1173
1131static struct platform_driver at91ether_driver = { 1174static struct platform_driver at91ether_driver = {
1132 .probe = at91ether_probe, 1175 .probe = at91ether_probe,
1133 .remove = __devexit_p(at91ether_remove), 1176 .remove = __devexit_p(at91ether_remove),
1134 /* FIXME: support suspend and resume */ 1177 .suspend = at91ether_suspend,
1178 .resume = at91ether_resume,
1135 .driver = { 1179 .driver = {
1136 .name = DRV_NAME, 1180 .name = DRV_NAME,
1137 .owner = THIS_MODULE, 1181 .owner = THIS_MODULE,