1 files changed, 91 insertions, 117 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
index c3f10a92b62b..9497b13a5753 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
@@ -6,7 +6,8 @@
  */
 
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
 #include <linux/of_net.h>
 #include <linux/stmmac.h>
 
@@ -41,69 +42,45 @@
 
 #define ETHER_CLK_SEL_RX_TX_CLK_EN (ETHER_CLK_SEL_RX_CLK_EN | ETHER_CLK_SEL_TX_CLK_EN)
 
-#define ETHER_CONFIG_INTF_MII 0
-#define ETHER_CONFIG_INTF_RGMII BIT(0)
-#define ETHER_CONFIG_INTF_RMII BIT(2)
-
 struct visconti_eth {
 	void __iomem *reg;
-	u32 phy_intf_sel;
 	struct clk *phy_ref_clk;
 	struct device *dev;
-	spinlock_t lock; /* lock to protect register update */
 };
 
-static void visconti_eth_fix_mac_speed(void *priv, unsigned int speed)
+static int visconti_eth_set_clk_tx_rate(void *bsp_priv, struct clk *clk_tx_i,
+					phy_interface_t interface, int speed)
 {
-	struct visconti_eth *dwmac = priv;
-	struct net_device *netdev = dev_get_drvdata(dwmac->dev);
-	unsigned int val, clk_sel_val = 0;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dwmac->lock, flags);
-
-	/* adjust link */
-	val = readl(dwmac->reg + MAC_CTRL_REG);
-	val &= ~(GMAC_CONFIG_PS | GMAC_CONFIG_FES);
-
-	switch (speed) {
-	case SPEED_1000:
-		if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RGMII)
-			clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_125M;
-		break;
-	case SPEED_100:
-		if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RGMII)
-			clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_25M;
-		if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RMII)
-			clk_sel_val = ETHER_CLK_SEL_DIV_SEL_2;
-		val |= GMAC_CONFIG_PS | GMAC_CONFIG_FES;
-		break;
-	case SPEED_10:
-		if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RGMII)
-			clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_2P5M;
-		if (dwmac->phy_intf_sel == ETHER_CONFIG_INTF_RMII)
-			clk_sel_val = ETHER_CLK_SEL_DIV_SEL_20;
-		val |= GMAC_CONFIG_PS;
-		break;
-	default:
-		/* No bit control */
-		netdev_err(netdev, "Unsupported speed request (%d)", speed);
-		spin_unlock_irqrestore(&dwmac->lock, flags);
-		return;
-	}
-
-	writel(val, dwmac->reg + MAC_CTRL_REG);
-
-	/* Stop internal clock */
-	val = readl(dwmac->reg + REG_ETHER_CLOCK_SEL);
-	val &= ~(ETHER_CLK_SEL_RMII_CLK_EN | ETHER_CLK_SEL_RX_TX_CLK_EN);
-	val |= ETHER_CLK_SEL_TX_O_E_N_IN;
-	writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+	struct visconti_eth *dwmac = bsp_priv;
+	unsigned long clk_sel, val;
+
+	if (phy_interface_mode_is_rgmii(interface)) {
+		switch (speed) {
+		case SPEED_1000:
+			clk_sel = ETHER_CLK_SEL_FREQ_SEL_125M;
+			break;
+
+		case SPEED_100:
+			clk_sel = ETHER_CLK_SEL_FREQ_SEL_25M;
+			break;
+
+		case SPEED_10:
+			clk_sel = ETHER_CLK_SEL_FREQ_SEL_2P5M;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+
+		/* Stop internal clock */
+		val = readl(dwmac->reg + REG_ETHER_CLOCK_SEL);
+		val &= ~(ETHER_CLK_SEL_RMII_CLK_EN |
+			 ETHER_CLK_SEL_RX_TX_CLK_EN);
+		val |= ETHER_CLK_SEL_TX_O_E_N_IN;
+		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
 
-	/* Set Clock-Mux, Start clock, Set TX_O direction */
-	switch (dwmac->phy_intf_sel) {
-	case ETHER_CONFIG_INTF_RGMII:
-		val = clk_sel_val | ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC;
+		/* Set Clock-Mux, Start clock, Set TX_O direction */
+		val = clk_sel | ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC;
 		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
 
 		val |= ETHER_CLK_SEL_RX_TX_CLK_EN;
@@ -111,11 +88,32 @@ static void visconti_eth_fix_mac_speed(void *priv, unsigned int speed)
 
 		val &= ~ETHER_CLK_SEL_TX_O_E_N_IN;
 		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
-		break;
-	case ETHER_CONFIG_INTF_RMII:
-		val = clk_sel_val | ETHER_CLK_SEL_RX_CLK_EXT_SEL_DIV |
-			ETHER_CLK_SEL_TX_CLK_EXT_SEL_DIV | ETHER_CLK_SEL_TX_O_E_N_IN |
-			ETHER_CLK_SEL_RMII_CLK_SEL_RX_C;
+	} else if (interface == PHY_INTERFACE_MODE_RMII) {
+		switch (speed) {
+		case SPEED_100:
+			clk_sel = ETHER_CLK_SEL_DIV_SEL_2;
+			break;
+
+		case SPEED_10:
+			clk_sel = ETHER_CLK_SEL_DIV_SEL_20;
+			break;
+
+		default:
+			return -EINVAL;
+		}
+
+		/* Stop internal clock */
+		val = readl(dwmac->reg + REG_ETHER_CLOCK_SEL);
+		val &= ~(ETHER_CLK_SEL_RMII_CLK_EN |
+			 ETHER_CLK_SEL_RX_TX_CLK_EN);
+		val |= ETHER_CLK_SEL_TX_O_E_N_IN;
+		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+		/* Set Clock-Mux, Start clock, Set TX_O direction */
+		val = clk_sel | ETHER_CLK_SEL_RX_CLK_EXT_SEL_DIV |
+		      ETHER_CLK_SEL_TX_CLK_EXT_SEL_DIV |
+		      ETHER_CLK_SEL_TX_O_E_N_IN |
+		      ETHER_CLK_SEL_RMII_CLK_SEL_RX_C;
 		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
 
 		val |= ETHER_CLK_SEL_RMII_CLK_RST;
@@ -123,46 +121,42 @@ static void visconti_eth_fix_mac_speed(void *priv, unsigned int speed)
 
 		val |= ETHER_CLK_SEL_RMII_CLK_EN | ETHER_CLK_SEL_RX_TX_CLK_EN;
 		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
-		break;
-	case ETHER_CONFIG_INTF_MII:
-	default:
-		val = clk_sel_val | ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC |
-			ETHER_CLK_SEL_TX_CLK_EXT_SEL_TXC | ETHER_CLK_SEL_TX_O_E_N_IN;
+	} else {
+		/* Stop internal clock */
+		val = readl(dwmac->reg + REG_ETHER_CLOCK_SEL);
+		val &= ~(ETHER_CLK_SEL_RMII_CLK_EN |
+			 ETHER_CLK_SEL_RX_TX_CLK_EN);
+		val |= ETHER_CLK_SEL_TX_O_E_N_IN;
+		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
+
+		/* Set Clock-Mux, Start clock, Set TX_O direction */
+		val = ETHER_CLK_SEL_RX_CLK_EXT_SEL_RXC |
+		      ETHER_CLK_SEL_TX_CLK_EXT_SEL_TXC |
+		      ETHER_CLK_SEL_TX_O_E_N_IN;
 		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
 
 		val |= ETHER_CLK_SEL_RX_TX_CLK_EN;
 		writel(val, dwmac->reg + REG_ETHER_CLOCK_SEL);
-		break;
 	}
 
-	spin_unlock_irqrestore(&dwmac->lock, flags);
+	return 0;
 }
 
 static int visconti_eth_init_hw(struct platform_device *pdev, struct plat_stmmacenet_data *plat_dat)
 {
 	struct visconti_eth *dwmac = plat_dat->bsp_priv;
-	unsigned int reg_val, clk_sel_val;
-
-	switch (plat_dat->phy_interface) {
-	case PHY_INTERFACE_MODE_RGMII:
-	case PHY_INTERFACE_MODE_RGMII_ID:
-	case PHY_INTERFACE_MODE_RGMII_RXID:
-	case PHY_INTERFACE_MODE_RGMII_TXID:
-		dwmac->phy_intf_sel = ETHER_CONFIG_INTF_RGMII;
-		break;
-	case PHY_INTERFACE_MODE_MII:
-		dwmac->phy_intf_sel = ETHER_CONFIG_INTF_MII;
-		break;
-	case PHY_INTERFACE_MODE_RMII:
-		dwmac->phy_intf_sel = ETHER_CONFIG_INTF_RMII;
-		break;
-	default:
+	unsigned int clk_sel_val;
+	int phy_intf_sel;
+
+	phy_intf_sel = stmmac_get_phy_intf_sel(plat_dat->phy_interface);
+	if (phy_intf_sel != PHY_INTF_SEL_GMII_MII &&
+	    phy_intf_sel != PHY_INTF_SEL_RGMII &&
+	    phy_intf_sel != PHY_INTF_SEL_RMII) {
 		dev_err(&pdev->dev, "Unsupported phy-mode (%d)\n", plat_dat->phy_interface);
 		return -EOPNOTSUPP;
 	}
 
-	reg_val = dwmac->phy_intf_sel;
-	writel(reg_val, dwmac->reg + REG_ETHER_CONTROL);
+	writel(phy_intf_sel, dwmac->reg + REG_ETHER_CONTROL);
 
 	/* Enable TX/RX clock */
 	clk_sel_val = ETHER_CLK_SEL_FREQ_SEL_125M;
@@ -172,8 +166,8 @@ static int visconti_eth_init_hw(struct platform_device *pdev, struct plat_stmmac
 	       dwmac->reg + REG_ETHER_CLOCK_SEL);
 
 	/* release internal-reset */
-	reg_val |= ETHER_ETH_CONTROL_RESET;
-	writel(reg_val, dwmac->reg + REG_ETHER_CONTROL);
+	phy_intf_sel |= ETHER_ETH_CONTROL_RESET;
+	writel(phy_intf_sel, dwmac->reg + REG_ETHER_CONTROL);
 
 	return 0;
 }
@@ -198,7 +192,7 @@ static int visconti_eth_clock_probe(struct platform_device *pdev,
 	return 0;
 }
 
-static int visconti_eth_clock_remove(struct platform_device *pdev)
+static void visconti_eth_clock_remove(struct platform_device *pdev)
 {
 	struct visconti_eth *dwmac = get_stmmac_bsp_priv(&pdev->dev);
 	struct net_device *ndev = platform_get_drvdata(pdev);
@@ -206,8 +200,6 @@ static int visconti_eth_clock_remove(struct platform_device *pdev)
 
 	clk_disable_unprepare(dwmac->phy_ref_clk);
 	clk_disable_unprepare(priv->plat->stmmac_clk);
-
-	return 0;
 }
 
 static int visconti_eth_dwmac_probe(struct platform_device *pdev)
@@ -221,25 +213,22 @@ static int visconti_eth_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+	plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
 	if (IS_ERR(plat_dat))
 		return PTR_ERR(plat_dat);
 
 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
-	if (!dwmac) {
-		ret = -ENOMEM;
-		goto remove_config;
-	}
+	if (!dwmac)
+		return -ENOMEM;
 
-	spin_lock_init(&dwmac->lock);
 	dwmac->reg = stmmac_res.addr;
 	dwmac->dev = &pdev->dev;
 	plat_dat->bsp_priv = dwmac;
-	plat_dat->fix_mac_speed = visconti_eth_fix_mac_speed;
+	plat_dat->set_clk_tx_rate = visconti_eth_set_clk_tx_rate;
 
 	ret = visconti_eth_clock_probe(pdev, plat_dat);
 	if (ret)
-		goto remove_config;
+		return ret;
 
 	visconti_eth_init_hw(pdev, plat_dat);
 
@@ -253,29 +242,14 @@ static int visconti_eth_dwmac_probe(struct platform_device *pdev)
 
 remove:
 	visconti_eth_clock_remove(pdev);
-remove_config:
-	stmmac_remove_config_dt(pdev, plat_dat);
 
 	return ret;
 }
 
-static int visconti_eth_dwmac_remove(struct platform_device *pdev)
+static void visconti_eth_dwmac_remove(struct platform_device *pdev)
 {
-	struct net_device *ndev = platform_get_drvdata(pdev);
-	struct stmmac_priv *priv = netdev_priv(ndev);
-	int err;
-
-	err = stmmac_pltfr_remove(pdev);
-	if (err < 0)
-		dev_err(&pdev->dev, "failed to remove platform: %d\n", err);
-
-	err = visconti_eth_clock_remove(pdev);
-	if (err < 0)
-		dev_err(&pdev->dev, "failed to remove clock: %d\n", err);
-
-	stmmac_remove_config_dt(pdev, priv->plat);
-
-	return err;
+	stmmac_pltfr_remove(pdev);
+	visconti_eth_clock_remove(pdev);
 }
 
 static const struct of_device_id visconti_eth_dwmac_match[] = {