From d0b2f91bede3bd5e3d24dd6803e56eee959c1797 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Thu, 20 Oct 2016 00:10:27 -0300
Subject: Linux-libre 4.8.2-gnu

---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 51 +++++++++++++++++------
 1 file changed, 39 insertions(+), 12 deletions(-)

(limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_main.c')

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index e4071265b..4c8c60af7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -285,8 +285,9 @@ bool stmmac_eee_init(struct stmmac_priv *priv)
 	/* Using PCS we cannot dial with the phy registers at this stage
 	 * so we do not support extra feature like EEE.
 	 */
-	if ((priv->pcs == STMMAC_PCS_RGMII) || (priv->pcs == STMMAC_PCS_TBI) ||
-	    (priv->pcs == STMMAC_PCS_RTBI))
+	if ((priv->hw->pcs == STMMAC_PCS_RGMII) ||
+	    (priv->hw->pcs == STMMAC_PCS_TBI) ||
+	    (priv->hw->pcs == STMMAC_PCS_RTBI))
 		goto out;
 
 	/* MAC core supports the EEE feature. */
@@ -799,10 +800,10 @@ static void stmmac_check_pcs_mode(struct stmmac_priv *priv)
 		    (interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
 		    (interface == PHY_INTERFACE_MODE_RGMII_TXID)) {
 			pr_debug("STMMAC: PCS RGMII support enable\n");
-			priv->pcs = STMMAC_PCS_RGMII;
+			priv->hw->pcs = STMMAC_PCS_RGMII;
 		} else if (interface == PHY_INTERFACE_MODE_SGMII) {
 			pr_debug("STMMAC: PCS SGMII support enable\n");
-			priv->pcs = STMMAC_PCS_SGMII;
+			priv->hw->pcs = STMMAC_PCS_SGMII;
 		}
 	}
 }
@@ -1665,6 +1666,19 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
 	if (priv->plat->bus_setup)
 		priv->plat->bus_setup(priv->ioaddr);
 
+	/* PS and related bits will be programmed according to the speed */
+	if (priv->hw->pcs) {
+		int speed = priv->plat->mac_port_sel_speed;
+
+		if ((speed == SPEED_10) || (speed == SPEED_100) ||
+		    (speed == SPEED_1000)) {
+			priv->hw->ps = speed;
+		} else {
+			dev_warn(priv->device, "invalid port speed\n");
+			priv->hw->ps = 0;
+		}
+	}
+
 	/* Initialize the MAC Core */
 	priv->hw->mac->core_init(priv->hw, dev->mtu);
 
@@ -1714,8 +1728,8 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
 		priv->hw->dma->rx_watchdog(priv->ioaddr, MAX_DMA_RIWT);
 	}
 
-	if (priv->pcs && priv->hw->mac->ctrl_ane)
-		priv->hw->mac->ctrl_ane(priv->hw, 0);
+	if (priv->hw->pcs && priv->hw->mac->pcs_ctrl_ane)
+		priv->hw->mac->pcs_ctrl_ane(priv->hw, 1, priv->hw->ps, 0);
 
 	/*  set TX ring length */
 	if (priv->hw->dma->set_tx_ring_len)
@@ -1748,8 +1762,9 @@ static int stmmac_open(struct net_device *dev)
 
 	stmmac_check_ether_addr(priv);
 
-	if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI &&
-	    priv->pcs != STMMAC_PCS_RTBI) {
+	if (priv->hw->pcs != STMMAC_PCS_RGMII &&
+	    priv->hw->pcs != STMMAC_PCS_TBI &&
+	    priv->hw->pcs != STMMAC_PCS_RTBI) {
 		ret = stmmac_init_phy(dev);
 		if (ret) {
 			pr_err("%s: Cannot attach to PHY (error: %d)\n",
@@ -2809,6 +2824,14 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
 							priv->rx_tail_addr,
 							STMMAC_CHAN0);
 		}
+
+		/* PCS link status */
+		if (priv->hw->pcs) {
+			if (priv->xstats.pcs_link)
+				netif_carrier_on(dev);
+			else
+				netif_carrier_off(dev);
+		}
 	}
 
 	/* To handle DMA interrupts */
@@ -3130,6 +3153,7 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
 		 */
 		priv->plat->enh_desc = priv->dma_cap.enh_desc;
 		priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up;
+		priv->hw->pmt = priv->plat->pmt;
 
 		/* TXCOE doesn't work in thresh DMA mode */
 		if (priv->plat->force_thresh_dma_mode)
@@ -3325,8 +3349,9 @@ int stmmac_dvr_probe(struct device *device,
 
 	stmmac_check_pcs_mode(priv);
 
-	if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI &&
-	    priv->pcs != STMMAC_PCS_RTBI) {
+	if (priv->hw->pcs != STMMAC_PCS_RGMII  &&
+	    priv->hw->pcs != STMMAC_PCS_TBI &&
+	    priv->hw->pcs != STMMAC_PCS_RTBI) {
 		/* MDIO bus Registration */
 		ret = stmmac_mdio_register(ndev);
 		if (ret < 0) {
@@ -3372,12 +3397,14 @@ int stmmac_dvr_remove(struct device *dev)
 	stmmac_set_mac(priv->ioaddr, false);
 	netif_carrier_off(ndev);
 	unregister_netdev(ndev);
+	of_node_put(priv->plat->phy_node);
 	if (priv->stmmac_rst)
 		reset_control_assert(priv->stmmac_rst);
 	clk_disable_unprepare(priv->pclk);
 	clk_disable_unprepare(priv->stmmac_clk);
-	if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI &&
-	    priv->pcs != STMMAC_PCS_RTBI)
+	if (priv->hw->pcs != STMMAC_PCS_RGMII &&
+	    priv->hw->pcs != STMMAC_PCS_TBI &&
+	    priv->hw->pcs != STMMAC_PCS_RTBI)
 		stmmac_mdio_unregister(ndev);
 	free_netdev(ndev);
 
-- 
cgit v1.2.3-54-g00ecf