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path: root/drivers/net/can/flexcan.c
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Diffstat (limited to 'drivers/net/can/flexcan.c')
-rw-r--r--drivers/net/can/flexcan.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 38c0690df5c..d465fd4546f 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -1056,6 +1056,42 @@ static struct of_device_id flexcan_of_match[] = {
{},
};
+#ifdef CONFIG_PM
+static int flexcan_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct flexcan_priv *priv = netdev_priv(dev);
+
+ flexcan_chip_disable(priv);
+
+ if (netif_running(dev)) {
+ netif_stop_queue(dev);
+ netif_device_detach(dev);
+ }
+ priv->can.state = CAN_STATE_SLEEPING;
+
+ return 0;
+}
+
+static int flexcan_resume(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct flexcan_priv *priv = netdev_priv(dev);
+
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+ if (netif_running(dev)) {
+ netif_device_attach(dev);
+ netif_start_queue(dev);
+ }
+ flexcan_chip_enable(priv);
+
+ return 0;
+}
+#else
+#define flexcan_suspend NULL
+#define flexcan_resume NULL
+#endif
+
static struct platform_driver flexcan_driver = {
.driver = {
.name = DRV_NAME,
@@ -1064,6 +1100,8 @@ static struct platform_driver flexcan_driver = {
},
.probe = flexcan_probe,
.remove = __devexit_p(flexcan_remove),
+ .suspend = flexcan_suspend,
+ .resume = flexcan_resume,
};
module_platform_driver(flexcan_driver);