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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>
This commit is contained in:
Nimrod Andy 2014-05-27 15:51:08 +08:00 committed by David S. Miller
parent ce25b68b74
commit 5bbde4d2ec
1 changed files with 8 additions and 0 deletions
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8
drivers/net/ethernet/freescale/fec_main.c
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@ -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;