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