1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
new file mode 100644
index 000000000..16fb66a0c
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Amlogic Meson6 and Meson8 DWMAC glue layer
+ *
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ */
+
+#include <linux/device.h>
+#include <linux/ethtool.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/stmmac.h>
+
+#include "stmmac_platform.h"
+
+#define ETHMAC_SPEED_100	BIT(1)
+
+struct meson_dwmac {
+	struct device	*dev;
+	void __iomem	*reg;
+};
+
+static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed)
+{
+	struct meson_dwmac *dwmac = priv;
+	unsigned int val;
+
+	val = readl(dwmac->reg);
+
+	switch (speed) {
+	case SPEED_10:
+		val &= ~ETHMAC_SPEED_100;
+		break;
+	case SPEED_100:
+		val |= ETHMAC_SPEED_100;
+		break;
+	}
+
+	writel(val, dwmac->reg);
+}
+
+static int meson6_dwmac_probe(struct platform_device *pdev)
+{
+	struct plat_stmmacenet_data *plat_dat;
+	struct stmmac_resources stmmac_res;
+	struct meson_dwmac *dwmac;
+	int ret;
+
+	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
+	if (ret)
+		return ret;
+
+	plat_dat = 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 err_remove_config_dt;
+	}
+
+	dwmac->reg = devm_platform_ioremap_resource(pdev, 1);
+	if (IS_ERR(dwmac->reg)) {
+		ret = PTR_ERR(dwmac->reg);
+		goto err_remove_config_dt;
+	}
+
+	plat_dat->bsp_priv = dwmac;
+	plat_dat->fix_mac_speed = meson6_dwmac_fix_mac_speed;
+
+	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+	if (ret)
+		goto err_remove_config_dt;
+
+	return 0;
+
+err_remove_config_dt:
+	stmmac_remove_config_dt(pdev, plat_dat);
+
+	return ret;
+}
+
+static const struct of_device_id meson6_dwmac_match[] = {
+	{ .compatible = "amlogic,meson6-dwmac" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
+
+static struct platform_driver meson6_dwmac_driver = {
+	.probe  = meson6_dwmac_probe,
+	.remove = stmmac_pltfr_remove,
+	.driver = {
+		.name           = "meson6-dwmac",
+		.pm		= &stmmac_pltfr_pm_ops,
+		.of_match_table = meson6_dwmac_match,
+	},
+};
+module_platform_driver(meson6_dwmac_driver);
+
+MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
+MODULE_DESCRIPTION("Amlogic Meson6 and Meson8 DWMAC glue layer");
+MODULE_LICENSE("GPL v2");