From: Nimrod Andy <B38611@freescale.com>
Date: Tue, 27 May 2014 07:51:08 +0000 (+0800)
Subject: net: fec: use pinctrl PM helpers
X-Git-Tag: firefly_0821_release~176^2~3765^2~127
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5bbde4d2ec8061a9cdad3f7a08d61c4d78e57e0e;p=firefly-linux-kernel-4.4.55.git

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 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;