linux-kernel - [PATCH 07/10] macb: Basic suspend/resume support

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Date:	Thu, 13 Mar 2008 15:39:42 +0100
From:	Haavard Skinnemoen <hskinnemoen@...el.com>
To:	kernel@...32linux.org
Cc:	linux-kernel@...r.kernel.org,
	Haavard Skinnemoen <hskinnemoen@...el.com>,
	David Brownell <david-b@...bell.net>
Subject: [PATCH 07/10] macb: Basic suspend/resume support

---
 drivers/net/macb.c |   37 +++++++++++++++++++++++++++++++++++++
 1 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 1d210ed..94bf2ba 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -1275,8 +1275,45 @@ 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",
 	},
-- 
1.5.4.3

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