net: fec: use pinctrl PM helpers

when system suspend, need to set pins to low power state to
save IO power consumption, there are three states of pinctrl:
"default", "idle" and "sleep". Currently enet supports default
and sleep state.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index cb5c987bee39..4d989b2df420 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1816,6 +1816,7 @@ fec_enet_open(struct net_device *ndev)
         struct fec_enet_private *fep = netdev_priv(ndev);
         int ret;
 
+        pinctrl_pm_select_default_state(&fep->pdev->dev);
         ret = fec_enet_clk_enable(ndev, true);
         if (ret)
                 return ret;
@@ -1859,6 +1860,7 @@ fec_enet_close(struct net_device *ndev)
         }
 
         fec_enet_clk_enable(ndev, false);
+        pinctrl_pm_select_sleep_state(&fep->pdev->dev);
         fec_enet_free_buffers(ndev);
 
         return 0;
@@ -2162,6 +2164,9 @@ fec_probe(struct platform_device *pdev)
                 fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG;
 #endif
 
+        /* Select default pin state */
+        pinctrl_pm_select_default_state(&pdev->dev);
+
         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         fep->hwp = devm_ioremap_resource(&pdev->dev, r);
         if (IS_ERR(fep->hwp)) {
@@ -2258,6 +2263,7 @@ fec_probe(struct platform_device *pdev)
         /* Carrier starts down, phylib will bring it up */
         netif_carrier_off(ndev);
         fec_enet_clk_enable(ndev, false);
+        pinctrl_pm_select_sleep_state(&pdev->dev);
 
         ret = register_netdev(ndev);
         if (ret)
@@ -2317,6 +2323,7 @@ fec_suspend(struct device *dev)
                 netif_device_detach(ndev);
         }
         fec_enet_clk_enable(ndev, false);
+        pinctrl_pm_select_sleep_state(&fep->pdev->dev);
 
         if (fep->reg_phy)
                 regulator_disable(fep->reg_phy);
@@ -2337,6 +2344,7 @@ fec_resume(struct device *dev)
                         return ret;
         }
 
+        pinctrl_pm_select_default_state(&fep->pdev->dev);
         ret = fec_enet_clk_enable(ndev, true);
         if (ret)
                 goto failed_clk;