1 files changed, 59 insertions, 162 deletions

diff --git a/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 68aec5c46..d02691ba3 100644
--- a/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/kernel/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -28,29 +28,11 @@
 #include <linux/of.h>
 #include <linux/of_net.h>
 #include <linux/of_device.h>
+#include <linux/of_mdio.h>
 
 #include "stmmac.h"
 #include "stmmac_platform.h"
 
-static const struct of_device_id stmmac_dt_ids[] = {
-	/* SoC specific glue layers should come before generic bindings */
-	{ .compatible = "rockchip,rk3288-gmac", .data = &rk3288_gmac_data},
-	{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
-	{ .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
-	{ .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data},
-	{ .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data},
-	{ .compatible = "st,stid127-dwmac", .data = &stid127_dwmac_data},
-	{ .compatible = "st,stih407-dwmac", .data = &stih4xx_dwmac_data},
-	{ .compatible = "altr,socfpga-stmmac", .data = &socfpga_gmac_data },
-	{ .compatible = "st,spear600-gmac"},
-	{ .compatible = "snps,dwmac-3.610"},
-	{ .compatible = "snps,dwmac-3.70a"},
-	{ .compatible = "snps,dwmac-3.710"},
-	{ .compatible = "snps,dwmac"},
-	{ /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
-
 #ifdef CONFIG_OF
 
 /**
@@ -122,37 +104,16 @@ static int dwmac1000_validate_ucast_entries(int ucast_entries)
  * this function is to read the driver parameters from device-tree and
  * set some private fields that will be used by the main at runtime.
  */
-static int stmmac_probe_config_dt(struct platform_device *pdev,
-				  struct plat_stmmacenet_data *plat,
-				  const char **mac)
+struct plat_stmmacenet_data *
+stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
 {
 	struct device_node *np = pdev->dev.of_node;
+	struct plat_stmmacenet_data *plat;
 	struct stmmac_dma_cfg *dma_cfg;
-	const struct of_device_id *device;
-
-	if (!np)
-		return -ENODEV;
-
-	device = of_match_device(stmmac_dt_ids, &pdev->dev);
-	if (!device)
-		return -ENODEV;
-
-	if (device->data) {
-		const struct stmmac_of_data *data = device->data;
-		plat->has_gmac = data->has_gmac;
-		plat->enh_desc = data->enh_desc;
-		plat->tx_coe = data->tx_coe;
-		plat->rx_coe = data->rx_coe;
-		plat->bugged_jumbo = data->bugged_jumbo;
-		plat->pmt = data->pmt;
-		plat->riwt_off = data->riwt_off;
-		plat->fix_mac_speed = data->fix_mac_speed;
-		plat->bus_setup = data->bus_setup;
-		plat->setup = data->setup;
-		plat->free = data->free;
-		plat->init = data->init;
-		plat->exit = data->exit;
-	}
+
+	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	if (!plat)
+		return ERR_PTR(-ENOMEM);
 
 	*mac = of_get_mac_address(np);
 	plat->interface = of_get_phy_mode(np);
@@ -168,13 +129,24 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
 	/* Default to phy auto-detection */
 	plat->phy_addr = -1;
 
+	/* If we find a phy-handle property, use it as the PHY */
+	plat->phy_node = of_parse_phandle(np, "phy-handle", 0);
+
+	/* If phy-handle is not specified, check if we have a fixed-phy */
+	if (!plat->phy_node && of_phy_is_fixed_link(np)) {
+		if ((of_phy_register_fixed_link(np) < 0))
+			return ERR_PTR(-ENODEV);
+
+		plat->phy_node = of_node_get(np);
+	}
+
 	/* "snps,phy-addr" is not a standard property. Mark it as deprecated
 	 * and warn of its use. Remove this when phy node support is added.
 	 */
 	if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0)
 		dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n");
 
-	if (plat->phy_bus_name)
+	if (plat->phy_node || plat->phy_bus_name)
 		plat->mdio_bus_data = NULL;
 	else
 		plat->mdio_bus_data =
@@ -194,6 +166,12 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
 	 */
 	plat->maxmtu = JUMBO_LEN;
 
+	/* Set default value for multicast hash bins */
+	plat->multicast_filter_bins = HASH_TABLE_SIZE;
+
+	/* Set default value for unicast filter entries */
+	plat->unicast_filter_entries = 1;
+
 	/*
 	 * Currently only the properties needed on SPEAr600
 	 * are provided. All other properties should be added
@@ -232,8 +210,10 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
 	if (of_find_property(np, "snps,pbl", NULL)) {
 		dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
 				       GFP_KERNEL);
-		if (!dma_cfg)
-			return -ENOMEM;
+		if (!dma_cfg) {
+			of_node_put(np);
+			return ERR_PTR(-ENOMEM);
+		}
 		plat->dma_cfg = dma_cfg;
 		of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
 		dma_cfg->fixed_burst =
@@ -250,45 +230,34 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
 		pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set.");
 	}
 
-	return 0;
+	return plat;
 }
 #else
-static int stmmac_probe_config_dt(struct platform_device *pdev,
-				  struct plat_stmmacenet_data *plat,
-				  const char **mac)
+struct plat_stmmacenet_data *
+stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
 {
-	return -ENOSYS;
+	return ERR_PTR(-ENOSYS);
 }
 #endif /* CONFIG_OF */
+EXPORT_SYMBOL_GPL(stmmac_probe_config_dt);
 
-/**
- * stmmac_pltfr_probe - platform driver probe.
- * @pdev: platform device pointer
- * Description: platform_device probe function. It is to allocate
- * the necessary platform resources, invoke custom helper (if required) and
- * invoke the main probe function.
- */
-static int stmmac_pltfr_probe(struct platform_device *pdev)
+int stmmac_get_platform_resources(struct platform_device *pdev,
+				  struct stmmac_resources *stmmac_res)
 {
-	int ret = 0;
 	struct resource *res;
-	struct device *dev = &pdev->dev;
-	void __iomem *addr = NULL;
-	struct stmmac_priv *priv = NULL;
-	struct plat_stmmacenet_data *plat_dat = NULL;
-	const char *mac = NULL;
-	int irq, wol_irq, lpi_irq;
+
+	memset(stmmac_res, 0, sizeof(*stmmac_res));
 
 	/* Get IRQ information early to have an ability to ask for deferred
 	 * probe if needed before we went too far with resource allocation.
 	 */
-	irq = platform_get_irq_byname(pdev, "macirq");
-	if (irq < 0) {
-		if (irq != -EPROBE_DEFER) {
-			dev_err(dev,
+	stmmac_res->irq = platform_get_irq_byname(pdev, "macirq");
+	if (stmmac_res->irq < 0) {
+		if (stmmac_res->irq != -EPROBE_DEFER) {
+			dev_err(&pdev->dev,
 				"MAC IRQ configuration information not found\n");
 		}
-		return irq;
+		return stmmac_res->irq;
 	}
 
 	/* On some platforms e.g. SPEAr the wake up irq differs from the mac irq
@@ -298,82 +267,23 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
 	 * In case the wake up interrupt is not passed from the platform
 	 * so the driver will continue to use the mac irq (ndev->irq)
 	 */
-	wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
-	if (wol_irq < 0) {
-		if (wol_irq == -EPROBE_DEFER)
+	stmmac_res->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
+	if (stmmac_res->wol_irq < 0) {
+		if (stmmac_res->wol_irq == -EPROBE_DEFER)
 			return -EPROBE_DEFER;
-		wol_irq = irq;
+		stmmac_res->wol_irq = stmmac_res->irq;
 	}
 
-	lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
-	if (lpi_irq == -EPROBE_DEFER)
+	stmmac_res->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
+	if (stmmac_res->lpi_irq == -EPROBE_DEFER)
 		return -EPROBE_DEFER;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	addr = devm_ioremap_resource(dev, res);
-	if (IS_ERR(addr))
-		return PTR_ERR(addr);
-
-	plat_dat = dev_get_platdata(&pdev->dev);
-
-	if (!plat_dat)
-		plat_dat = devm_kzalloc(&pdev->dev,
-					sizeof(struct plat_stmmacenet_data),
-					GFP_KERNEL);
-	if (!plat_dat) {
-		pr_err("%s: ERROR: no memory", __func__);
-		return  -ENOMEM;
-	}
-
-	/* Set default value for multicast hash bins */
-	plat_dat->multicast_filter_bins = HASH_TABLE_SIZE;
+	stmmac_res->addr = devm_ioremap_resource(&pdev->dev, res);
 
-	/* Set default value for unicast filter entries */
-	plat_dat->unicast_filter_entries = 1;
-
-	if (pdev->dev.of_node) {
-		ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
-		if (ret) {
-			pr_err("%s: main dt probe failed", __func__);
-			return ret;
-		}
-	}
-
-	/* Custom setup (if needed) */
-	if (plat_dat->setup) {
-		plat_dat->bsp_priv = plat_dat->setup(pdev);
-		if (IS_ERR(plat_dat->bsp_priv))
-			return PTR_ERR(plat_dat->bsp_priv);
-	}
-
-	/* Custom initialisation (if needed)*/
-	if (plat_dat->init) {
-		ret = plat_dat->init(pdev, plat_dat->bsp_priv);
-		if (unlikely(ret))
-			return ret;
-	}
-
-	priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
-	if (IS_ERR(priv)) {
-		pr_err("%s: main driver probe failed", __func__);
-		return PTR_ERR(priv);
-	}
-
-	/* Copy IRQ values to priv structure which is now avaialble */
-	priv->dev->irq = irq;
-	priv->wol_irq = wol_irq;
-	priv->lpi_irq = lpi_irq;
-
-	/* Get MAC address if available (DT) */
-	if (mac)
-		memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
-
-	platform_set_drvdata(pdev, priv->dev);
-
-	pr_debug("STMMAC platform driver registration completed");
-
-	return 0;
+	return PTR_ERR_OR_ZERO(stmmac_res->addr);
 }
+EXPORT_SYMBOL_GPL(stmmac_get_platform_resources);
 
 /**
  * stmmac_pltfr_remove
@@ -381,7 +291,7 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
  * Description: this function calls the main to free the net resources
  * and calls the platforms hook and release the resources (e.g. mem).
  */
-static int stmmac_pltfr_remove(struct platform_device *pdev)
+int stmmac_pltfr_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
@@ -390,11 +300,9 @@ static int stmmac_pltfr_remove(struct platform_device *pdev)
 	if (priv->plat->exit)
 		priv->plat->exit(pdev, priv->plat->bsp_priv);
 
-	if (priv->plat->free)
-		priv->plat->free(pdev, priv->plat->bsp_priv);
-
 	return ret;
 }
+EXPORT_SYMBOL_GPL(stmmac_pltfr_remove);
 
 #ifdef CONFIG_PM_SLEEP
 /**
@@ -438,21 +346,10 @@ static int stmmac_pltfr_resume(struct device *dev)
 }
 #endif /* CONFIG_PM_SLEEP */
 
-static SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops,
-			 stmmac_pltfr_suspend, stmmac_pltfr_resume);
-
-static struct platform_driver stmmac_pltfr_driver = {
-	.probe = stmmac_pltfr_probe,
-	.remove = stmmac_pltfr_remove,
-	.driver = {
-		   .name = STMMAC_RESOURCE_NAME,
-		   .pm = &stmmac_pltfr_pm_ops,
-		   .of_match_table = of_match_ptr(stmmac_dt_ids),
-	},
-};
-
-module_platform_driver(stmmac_pltfr_driver);
+SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend,
+				       stmmac_pltfr_resume);
+EXPORT_SYMBOL_GPL(stmmac_pltfr_pm_ops);
 
-MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
+MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet platform support");
 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
 MODULE_LICENSE("GPL");