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90 lines
1.9 KiB
90 lines
1.9 KiB
// 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 <[email protected]> |
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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 <[email protected]>"); |
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MODULE_DESCRIPTION("ARC EMAC platform driver"); |
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MODULE_LICENSE("GPL");
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