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authorHaavard Skinnemoen <hskinnemoen@atmel.com>2008-03-04 13:39:29 +0100
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-07-02 11:05:00 +0200
commitc1f598fd71db6a971ee88311167c8003243ebff2 (patch)
tree6f2fbc8f691d9377dd9488b854b36b96d7797842 /drivers/net/macb.c
parente1c609efbc0333840f2af2d875ca52ed8ee18587 (diff)
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>
Diffstat (limited to 'drivers/net/macb.c')
-rw-r--r--drivers/net/macb.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 92dccd43bdc..0a5745a854c 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -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,