1 files changed, 60 insertions, 148 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
index ec924c6c76c6..09ae16e026eb 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
@@ -29,10 +29,6 @@ struct tegra_eqos {
 	void __iomem *regs;
 
 	struct reset_control *rst;
-	struct clk *clk_master;
-	struct clk *clk_slave;
-	struct clk *clk_tx;
-	struct clk *clk_rx;
 
 	struct gpio_desc *reset;
 };
@@ -46,7 +42,9 @@ static int dwc_eth_dwmac_config_dt(struct platform_device *pdev,
 	u32 a_index = 0;
 
 	if (!plat_dat->axi) {
-		plat_dat->axi = kzalloc(sizeof(struct stmmac_axi), GFP_KERNEL);
+		plat_dat->axi = devm_kzalloc(&pdev->dev,
+					     sizeof(struct stmmac_axi),
+					     GFP_KERNEL);
 
 		if (!plat_dat->axi)
 			return -ENOMEM;
@@ -123,49 +121,9 @@ static int dwc_qos_probe(struct platform_device *pdev,
 			 struct plat_stmmacenet_data *plat_dat,
 			 struct stmmac_resources *stmmac_res)
 {
-	int err;
-
-	plat_dat->stmmac_clk = devm_clk_get(&pdev->dev, "apb_pclk");
-	if (IS_ERR(plat_dat->stmmac_clk)) {
-		dev_err(&pdev->dev, "apb_pclk clock not found.\n");
-		return PTR_ERR(plat_dat->stmmac_clk);
-	}
-
-	err = clk_prepare_enable(plat_dat->stmmac_clk);
-	if (err < 0) {
-		dev_err(&pdev->dev, "failed to enable apb_pclk clock: %d\n",
-			err);
-		return err;
-	}
-
-	plat_dat->pclk = devm_clk_get(&pdev->dev, "phy_ref_clk");
-	if (IS_ERR(plat_dat->pclk)) {
-		dev_err(&pdev->dev, "phy_ref_clk clock not found.\n");
-		err = PTR_ERR(plat_dat->pclk);
-		goto disable;
-	}
-
-	err = clk_prepare_enable(plat_dat->pclk);
-	if (err < 0) {
-		dev_err(&pdev->dev, "failed to enable phy_ref clock: %d\n",
-			err);
-		goto disable;
-	}
+	plat_dat->pclk = stmmac_pltfr_find_clk(plat_dat, "phy_ref_clk");
 
 	return 0;
-
-disable:
-	clk_disable_unprepare(plat_dat->stmmac_clk);
-	return err;
-}
-
-static void dwc_qos_remove(struct platform_device *pdev)
-{
-	struct net_device *ndev = platform_get_drvdata(pdev);
-	struct stmmac_priv *priv = netdev_priv(ndev);
-
-	clk_disable_unprepare(priv->plat->pclk);
-	clk_disable_unprepare(priv->plat->stmmac_clk);
 }
 
 #define SDMEMCOMPPADCTRL 0x8800
@@ -178,35 +136,34 @@ static void dwc_qos_remove(struct platform_device *pdev)
 #define AUTO_CAL_STATUS 0x880c
 #define  AUTO_CAL_STATUS_ACTIVE BIT(31)
 
-static void tegra_eqos_fix_speed(void *priv, unsigned int speed, unsigned int mode)
+static void tegra_eqos_fix_speed(void *bsp_priv, int speed, unsigned int mode)
 {
-	struct tegra_eqos *eqos = priv;
-	unsigned long rate = 125000000;
+	struct tegra_eqos *eqos = bsp_priv;
 	bool needs_calibration = false;
+	struct stmmac_priv *priv;
 	u32 value;
 	int err;
 
 	switch (speed) {
 	case SPEED_1000:
-		needs_calibration = true;
-		rate = 125000000;
-		break;
-
 	case SPEED_100:
 		needs_calibration = true;
-		rate = 25000000;
-		break;
+		fallthrough;
 
 	case SPEED_10:
-		rate = 2500000;
 		break;
 
 	default:
-		dev_err(eqos->dev, "invalid speed %u\n", speed);
+		dev_err(eqos->dev, "invalid speed %d\n", speed);
 		break;
 	}
 
 	if (needs_calibration) {
+		priv = netdev_priv(dev_get_drvdata(eqos->dev));
+
+		/* Calibration should be done with the MDIO bus idle */
+		mutex_lock(&priv->mii->mdio_lock);
+
 		/* calibrate */
 		value = readl(eqos->regs + SDMEMCOMPPADCTRL);
 		value |= SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD;
@@ -240,33 +197,17 @@ static void tegra_eqos_fix_speed(void *priv, unsigned int speed, unsigned int mo
 		value = readl(eqos->regs + SDMEMCOMPPADCTRL);
 		value &= ~SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD;
 		writel(value, eqos->regs + SDMEMCOMPPADCTRL);
+
+		mutex_unlock(&priv->mii->mdio_lock);
 	} else {
 		value = readl(eqos->regs + AUTO_CAL_CONFIG);
 		value &= ~AUTO_CAL_CONFIG_ENABLE;
 		writel(value, eqos->regs + AUTO_CAL_CONFIG);
 	}
-
-	err = clk_set_rate(eqos->clk_tx, rate);
-	if (err < 0)
-		dev_err(eqos->dev, "failed to set TX rate: %d\n", err);
-}
-
-static int tegra_eqos_init(struct platform_device *pdev, void *priv)
-{
-	struct tegra_eqos *eqos = priv;
-	unsigned long rate;
-	u32 value;
-
-	rate = clk_get_rate(eqos->clk_slave);
-
-	value = (rate / 1000000) - 1;
-	writel(value, eqos->regs + GMAC_1US_TIC_COUNTER);
-
-	return 0;
 }
 
 static int tegra_eqos_probe(struct platform_device *pdev,
-			    struct plat_stmmacenet_data *data,
+			    struct plat_stmmacenet_data *plat_dat,
 			    struct stmmac_resources *res)
 {
 	struct device *dev = &pdev->dev;
@@ -283,59 +224,19 @@ static int tegra_eqos_probe(struct platform_device *pdev,
 	if (!is_of_node(dev->fwnode))
 		goto bypass_clk_reset_gpio;
 
-	eqos->clk_master = devm_clk_get(&pdev->dev, "master_bus");
-	if (IS_ERR(eqos->clk_master)) {
-		err = PTR_ERR(eqos->clk_master);
-		goto error;
-	}
-
-	err = clk_prepare_enable(eqos->clk_master);
-	if (err < 0)
-		goto error;
-
-	eqos->clk_slave = devm_clk_get(&pdev->dev, "slave_bus");
-	if (IS_ERR(eqos->clk_slave)) {
-		err = PTR_ERR(eqos->clk_slave);
-		goto disable_master;
-	}
-
-	data->stmmac_clk = eqos->clk_slave;
-
-	err = clk_prepare_enable(eqos->clk_slave);
-	if (err < 0)
-		goto disable_master;
-
-	eqos->clk_rx = devm_clk_get(&pdev->dev, "rx");
-	if (IS_ERR(eqos->clk_rx)) {
-		err = PTR_ERR(eqos->clk_rx);
-		goto disable_slave;
-	}
-
-	err = clk_prepare_enable(eqos->clk_rx);
-	if (err < 0)
-		goto disable_slave;
-
-	eqos->clk_tx = devm_clk_get(&pdev->dev, "tx");
-	if (IS_ERR(eqos->clk_tx)) {
-		err = PTR_ERR(eqos->clk_tx);
-		goto disable_rx;
-	}
-
-	err = clk_prepare_enable(eqos->clk_tx);
-	if (err < 0)
-		goto disable_rx;
+	plat_dat->clk_tx_i = stmmac_pltfr_find_clk(plat_dat, "tx");
 
 	eqos->reset = devm_gpiod_get(&pdev->dev, "phy-reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(eqos->reset)) {
 		err = PTR_ERR(eqos->reset);
-		goto disable_tx;
+		return err;
 	}
 
 	usleep_range(2000, 4000);
 	gpiod_set_value(eqos->reset, 0);
 
 	/* MDIO bus was already reset just above */
-	data->mdio_bus_data->needs_reset = false;
+	plat_dat->mdio_bus_data->needs_reset = false;
 
 	eqos->rst = devm_reset_control_get(&pdev->dev, "eqos");
 	if (IS_ERR(eqos->rst)) {
@@ -356,29 +257,17 @@ static int tegra_eqos_probe(struct platform_device *pdev,
 	usleep_range(2000, 4000);
 
 bypass_clk_reset_gpio:
-	data->fix_mac_speed = tegra_eqos_fix_speed;
-	data->init = tegra_eqos_init;
-	data->bsp_priv = eqos;
-	data->flags |= STMMAC_FLAG_SPH_DISABLE;
-
-	err = tegra_eqos_init(pdev, eqos);
-	if (err < 0)
-		goto reset;
+	plat_dat->fix_mac_speed = tegra_eqos_fix_speed;
+	plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;
+	plat_dat->bsp_priv = eqos;
+	plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE |
+			   STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP;
 
 	return 0;
-reset:
-	reset_control_assert(eqos->rst);
+
 reset_phy:
 	gpiod_set_value(eqos->reset, 1);
-disable_tx:
-	clk_disable_unprepare(eqos->clk_tx);
-disable_rx:
-	clk_disable_unprepare(eqos->clk_rx);
-disable_slave:
-	clk_disable_unprepare(eqos->clk_slave);
-disable_master:
-	clk_disable_unprepare(eqos->clk_master);
-error:
+
 	return err;
 }
 
@@ -388,27 +277,29 @@ static void tegra_eqos_remove(struct platform_device *pdev)
 
 	reset_control_assert(eqos->rst);
 	gpiod_set_value(eqos->reset, 1);
-	clk_disable_unprepare(eqos->clk_tx);
-	clk_disable_unprepare(eqos->clk_rx);
-	clk_disable_unprepare(eqos->clk_slave);
-	clk_disable_unprepare(eqos->clk_master);
 }
 
 struct dwc_eth_dwmac_data {
 	int (*probe)(struct platform_device *pdev,
-		     struct plat_stmmacenet_data *data,
+		     struct plat_stmmacenet_data *plat_dat,
 		     struct stmmac_resources *res);
 	void (*remove)(struct platform_device *pdev);
+	const char *stmmac_clk_name;
 };
 
 static const struct dwc_eth_dwmac_data dwc_qos_data = {
 	.probe = dwc_qos_probe,
-	.remove = dwc_qos_remove,
+	.stmmac_clk_name = "apb_pclk",
 };
 
 static const struct dwc_eth_dwmac_data tegra_eqos_data = {
 	.probe = tegra_eqos_probe,
 	.remove = tegra_eqos_remove,
+	.stmmac_clk_name = "slave_bus",
+};
+
+static const struct dwc_eth_dwmac_data fsd_eqos_data = {
+	.stmmac_clk_name = "slave_bus",
 };
 
 static int dwc_eth_dwmac_probe(struct platform_device *pdev)
@@ -439,9 +330,23 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
 	if (IS_ERR(plat_dat))
 		return PTR_ERR(plat_dat);
 
-	ret = data->probe(pdev, plat_dat, &stmmac_res);
+	ret = devm_clk_bulk_get_all(&pdev->dev, &plat_dat->clks);
+	if (ret < 0)
+		return dev_err_probe(&pdev->dev, ret, "Failed to retrieve all required clocks\n");
+	plat_dat->num_clks = ret;
+
+	ret = clk_bulk_prepare_enable(plat_dat->num_clks, plat_dat->clks);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Failed to enable clocks\n");
+
+	plat_dat->stmmac_clk = stmmac_pltfr_find_clk(plat_dat,
+						     data->stmmac_clk_name);
+
+	if (data->probe)
+		ret = data->probe(pdev, plat_dat, &stmmac_res);
 	if (ret < 0) {
 		dev_err_probe(&pdev->dev, ret, "failed to probe subdriver\n");
+		clk_bulk_disable_unprepare(plat_dat->num_clks, plat_dat->clks);
 		return ret;
 	}
 
@@ -456,7 +361,8 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
 	return ret;
 
 remove:
-	data->remove(pdev);
+	if (data->remove)
+		data->remove(pdev);
 
 	return ret;
 }
@@ -464,22 +370,28 @@ remove:
 static void dwc_eth_dwmac_remove(struct platform_device *pdev)
 {
 	const struct dwc_eth_dwmac_data *data = device_get_match_data(&pdev->dev);
+	struct plat_stmmacenet_data *plat_dat = dev_get_platdata(&pdev->dev);
 
 	stmmac_dvr_remove(&pdev->dev);
 
-	data->remove(pdev);
+	if (data->remove)
+		data->remove(pdev);
+
+	if (plat_dat)
+		clk_bulk_disable_unprepare(plat_dat->num_clks, plat_dat->clks);
 }
 
 static const struct of_device_id dwc_eth_dwmac_match[] = {
 	{ .compatible = "snps,dwc-qos-ethernet-4.10", .data = &dwc_qos_data },
 	{ .compatible = "nvidia,tegra186-eqos", .data = &tegra_eqos_data },
+	{ .compatible = "tesla,fsd-ethqos", .data = &fsd_eqos_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, dwc_eth_dwmac_match);
 
 static struct platform_driver dwc_eth_dwmac_driver = {
 	.probe  = dwc_eth_dwmac_probe,
-	.remove_new = dwc_eth_dwmac_remove,
+	.remove = dwc_eth_dwmac_remove,
 	.driver = {
 		.name           = "dwc-eth-dwmac",
 		.pm             = &stmmac_pltfr_pm_ops,