sh_eth: add more PM methods
Add sh_eth_{suspend|resume}() implementing {suspend|resume|freeze|thaw|poweroff|
restore}() PM methods to make it possible to restore from hibernation not only
in Linux but also in e.g. U-Boot and to have more determined state on resume/
restore.
Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[Sergei: moved sh_eth_{suspend|resume}() before sh_eth_runtime_nop(), enclosed
them with #ifdef CONFIG_PM_SLEEP, reordered the local variables, got rid of
*goto* and label, reordered macro invocations, renamed, modified the changelog.]
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 96219de..fe0277a 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -2947,6 +2947,36 @@
}
#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
+static int sh_eth_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ int ret = 0;
+
+ if (netif_running(ndev)) {
+ netif_device_detach(ndev);
+ ret = sh_eth_close(ndev);
+ }
+
+ return ret;
+}
+
+static int sh_eth_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ int ret = 0;
+
+ if (netif_running(ndev)) {
+ ret = sh_eth_open(ndev);
+ if (ret < 0)
+ return ret;
+ netif_device_attach(ndev);
+ }
+
+ return ret;
+}
+#endif
+
static int sh_eth_runtime_nop(struct device *dev)
{
/* Runtime PM callback shared between ->runtime_suspend()
@@ -2960,6 +2990,7 @@
}
static const struct dev_pm_ops sh_eth_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sh_eth_suspend, sh_eth_resume)
SET_RUNTIME_PM_OPS(sh_eth_runtime_nop, sh_eth_runtime_nop, NULL)
};
#define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops)