From db88f10ad6a84c5bcb71bf51f0988a4bb1733bea Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Thu, 16 Jan 2014 10:52:52 +0000 Subject: [PATCH] net: stmmac: restore pinstate in pm resume. This patch adds code to restore default pinstate of the pins when it comes back from low power state. Without this patch the state of the pins would be unknown and the driver would not work. This patch also adds code to put the pins in to sleep state when the driver enters low power state. Signed-off-by: Srinivas Kandagatla Acked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index c1298a0..df7d8d6 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -43,6 +43,7 @@ #include #include #include +#include #ifdef CONFIG_STMMAC_DEBUG_FS #include #include @@ -2864,6 +2865,7 @@ int stmmac_suspend(struct net_device *ndev) priv->hw->mac->pmt(priv->ioaddr, priv->wolopts); else { stmmac_set_mac(priv->ioaddr, false); + pinctrl_pm_select_sleep_state(priv->device); /* Disable clock in case of PWM is off */ clk_disable_unprepare(priv->stmmac_clk); } @@ -2890,6 +2892,7 @@ int stmmac_resume(struct net_device *ndev) if (device_may_wakeup(priv->device)) { priv->hw->mac->pmt(priv->ioaddr, 0); } else { + pinctrl_pm_select_default_state(priv->device); /* enable the clk prevously disabled */ clk_prepare_enable(priv->stmmac_clk); /* reset the phy so that it's ready */ -- 1.8.5.5