From 5bbde4d2ec8061a9cdad3f7a08d61c4d78e57e0e Mon Sep 17 00:00:00 2001 From: Nimrod Andy Date: Tue, 27 May 2014 15:51:08 +0800 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec_main.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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; -- GitLab