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>
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index cb5c987..4d989b2 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1816,6 +1816,7 @@
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_clk_enable(ndev, false);
+ pinctrl_pm_select_sleep_state(&fep->pdev->dev);
fec_enet_free_buffers(ndev);
return 0;
@@ -2162,6 +2164,9 @@
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 @@
/* 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 @@
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 @@
return ret;
}
+ pinctrl_pm_select_default_state(&fep->pdev->dev);
ret = fec_enet_clk_enable(ndev, true);
if (ret)
goto failed_clk;