ks8851: suspend resume support
Add suspend/resume support using default open/stop interface methods
to do hardware dependant operations.
On suspend, same low power state (soft power mode) will be kept, the
following blocks will be disabled:
- Internal PLL Clock
- Tx/Rx PHY
- MAC
- SPI Interface
Signed-off-by: Abraham Arce <x0066660@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ks8851.c b/drivers/net/ks8851.c
index 51919fc..0fa4a98 100644
--- a/drivers/net/ks8851.c
+++ b/drivers/net/ks8851.c
@@ -1545,6 +1545,37 @@
/* driver bus management functions */
+#ifdef CONFIG_PM
+static int ks8851_suspend(struct spi_device *spi, pm_message_t state)
+{
+ struct ks8851_net *ks = dev_get_drvdata(&spi->dev);
+ struct net_device *dev = ks->netdev;
+
+ if (netif_running(dev)) {
+ netif_device_detach(dev);
+ ks8851_net_stop(dev);
+ }
+
+ return 0;
+}
+
+static int ks8851_resume(struct spi_device *spi)
+{
+ struct ks8851_net *ks = dev_get_drvdata(&spi->dev);
+ struct net_device *dev = ks->netdev;
+
+ if (netif_running(dev)) {
+ ks8851_net_open(dev);
+ netif_device_attach(dev);
+ }
+
+ return 0;
+}
+#else
+#define ks8851_suspend NULL
+#define ks8851_resume NULL
+#endif
+
static int __devinit ks8851_probe(struct spi_device *spi)
{
struct net_device *ndev;
@@ -1679,6 +1710,8 @@
},
.probe = ks8851_probe,
.remove = __devexit_p(ks8851_remove),
+ .suspend = ks8851_suspend,
+ .resume = ks8851_resume,
};
static int __init ks8851_init(void)