/** * emac_arc.c - ARC EMAC specific glue layer * * Copyright (C) 2014 Romain Perier * * Romain Perier <romain.perier@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #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" #define DRV_VERSION "1.0" static int emac_arc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct net_device *ndev; struct arc_emac_priv *priv; int interface, 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; priv->drv_version = DRV_VERSION; interface = of_get_phy_mode(dev->of_node); if (interface < 0) interface = PHY_INTERFACE_MODE_MII; 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");