Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 90 insertions, 0 deletions

diff --git a/drivers/net/ethernet/arc/emac_arc.c b/drivers/net/ethernet/arc/emac_arc.c
new file mode 100644
index 000000000..800620b8f
--- /dev/null
+++ b/drivers/net/ethernet/arc/emac_arc.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * DOC: emac_arc.c - ARC EMAC specific glue layer
+ *
+ * Copyright (C) 2014 Romain Perier
+ *
+ * Romain Perier  <romain.perier@gmail.com>
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/of_net.h>
+#include <linux/platform_device.h>
+
+#include "emac.h"
+
+#define DRV_NAME    "emac_arc"
+
+static int emac_arc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct arc_emac_priv *priv;
+	phy_interface_t interface;
+	struct net_device *ndev;
+	int err;
+
+	if (!dev->of_node)
+		return -ENODEV;
+
+	ndev = alloc_etherdev(sizeof(struct arc_emac_priv));
+	if (!ndev)
+		return -ENOMEM;
+	platform_set_drvdata(pdev, ndev);
+	SET_NETDEV_DEV(ndev, dev);
+
+	priv = netdev_priv(ndev);
+	priv->drv_name = DRV_NAME;
+
+	err = of_get_phy_mode(dev->of_node, &interface);
+	if (err) {
+		if (err == -ENODEV)
+			interface = PHY_INTERFACE_MODE_MII;
+		else
+			goto out_netdev;
+	}
+
+	priv->clk = devm_clk_get(dev, "hclk");
+	if (IS_ERR(priv->clk)) {
+		dev_err(dev, "failed to retrieve host clock from device tree\n");
+		err = -EINVAL;
+		goto out_netdev;
+	}
+
+	err = arc_emac_probe(ndev, interface);
+out_netdev:
+	if (err)
+		free_netdev(ndev);
+	return err;
+}
+
+static int emac_arc_remove(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	int err;
+
+	err = arc_emac_remove(ndev);
+	free_netdev(ndev);
+	return err;
+}
+
+static const struct of_device_id emac_arc_dt_ids[] = {
+	{ .compatible = "snps,arc-emac" },
+	{ /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, emac_arc_dt_ids);
+
+static struct platform_driver emac_arc_driver = {
+	.probe = emac_arc_probe,
+	.remove = emac_arc_remove,
+	.driver = {
+		.name = DRV_NAME,
+		.of_match_table  = emac_arc_dt_ids,
+	},
+};
+
+module_platform_driver(emac_arc_driver);
+
+MODULE_AUTHOR("Romain Perier <romain.perier@gmail.com>");
+MODULE_DESCRIPTION("ARC EMAC platform driver");
+MODULE_LICENSE("GPL");