Add missed suspend/resume callbacks to properly restore networking after
suspend/resume cycle.
Fixes: ed3525eda4c4 ("net: ethernet: ti: introduce cpsw switchdev based driver part 1 - dual-emac")
Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
---
drivers/net/ethernet/ti/cpsw_new.c | 53 ++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/drivers/net/ethernet/ti/cpsw_new.c b/drivers/net/ethernet/ti/cpsw_new.c
index 8ed78577cded..15672d0a4de6 100644
--- a/drivers/net/ethernet/ti/cpsw_new.c
+++ b/drivers/net/ethernet/ti/cpsw_new.c
@@ -17,6 +17,7 @@
#include <linux/phy.h>
#include <linux/phy/phy.h>
#include <linux/delay.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/gpio/consumer.h>
#include <linux/of.h>
@@ -2070,9 +2071,61 @@ static int cpsw_remove(struct platform_device *pdev)
return 0;
}
+static int __maybe_unused cpsw_suspend(struct device *dev)
+{
+ struct cpsw_common *cpsw = dev_get_drvdata(dev);
+ int i;
+
+ rtnl_lock();
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct net_device *ndev = cpsw->slaves[i].ndev;
+
+ if (!(ndev && netif_running(ndev)))
+ continue;
+
+ cpsw_ndo_stop(ndev);
+ }
+
+ rtnl_unlock();
+
+ /* Select sleep pin state */
+ pinctrl_pm_select_sleep_state(dev);
+
+ return 0;
+}
+
+static int __maybe_unused cpsw_resume(struct device *dev)
+{
+ struct cpsw_common *cpsw = dev_get_drvdata(dev);
+ int i;
+
+ /* Select default pin state */
+ pinctrl_pm_select_default_state(dev);
+
+ /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */
+ rtnl_lock();
+
+ for (i = 0; i < cpsw->data.slaves; i++) {
+ struct net_device *ndev = cpsw->slaves[i].ndev;
+
+ if (!(ndev && netif_running(ndev)))
+ continue;
+
+ cpsw_ndo_open(ndev);
+ }
+
+ rtnl_unlock();
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(cpsw_pm_ops, cpsw_suspend, cpsw_resume);
+
static struct platform_driver cpsw_driver = {
.driver = {
.name = "cpsw-switch",
+ .pm = &cpsw_pm_ops,
.of_match_table = cpsw_of_mtable,
},
.probe = cpsw_probe,
--
2.17.1
