projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 23d2d9a6 RP |
1 | /** |
| 2 | * emac_arc.c - ARC EMAC specific glue layer | |
| 3 | * | |
| 4 | * Copyright (C) 2014 Romain Perier | |
| 5 | * | |
| 6 | * Romain Perier <romain.perier@gmail.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation; either version 2 of the License, or | |
| 11 | * (at your option) any later version. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| 17 | */ | |
| 18 | ||
| 19 | #include <linux/etherdevice.h> | |
| 20 | #include <linux/module.h> | |
| 21 | #include <linux/of_net.h> | |
| 22 | #include <linux/platform_device.h> | |
| 23 | ||
| 24 | #include "emac.h" | |
| 25 | ||
| 26 | #define DRV_NAME "emac_arc" | |
| 27 | #define DRV_VERSION "1.0" | |
| 28 | ||
| 29 | static int emac_arc_probe(struct platform_device *pdev) | |
| 30 | { | |
| 31 | struct device *dev = &pdev->dev; | |
| 32 | struct net_device *ndev; | |
| 33 | struct arc_emac_priv *priv; | |
| 34 | int interface, err; | |
| 35 | ||
| 36 | if (!dev->of_node) | |
| 37 | return -ENODEV; | |
| 38 | ||
| 39 | ndev = alloc_etherdev(sizeof(struct arc_emac_priv)); | |
| 40 | if (!ndev) | |
| 41 | return -ENOMEM; | |
| 42 | platform_set_drvdata(pdev, ndev); | |
| 43 | SET_NETDEV_DEV(ndev, dev); | |
| 44 | ||
| 45 | priv = netdev_priv(ndev); | |
| 46 | priv->drv_name = DRV_NAME; | |
| 47 | priv->drv_version = DRV_VERSION; | |
| 48 | ||
| 49 | interface = of_get_phy_mode(dev->of_node); | |
| 50 | if (interface < 0) | |
| 51 | interface = PHY_INTERFACE_MODE_MII; | |
| 52 | ||
| 53 | priv->clk = devm_clk_get(dev, "hclk"); | |
| 54 | if (IS_ERR(priv->clk)) { | |
| 55 | dev_err(dev, "failed to retrieve host clock from device tree\n"); | |
| 56 | err = -EINVAL; | |
| 57 | goto out_netdev; | |
| 58 | } | |
| 59 | ||
| 60 | err = arc_emac_probe(ndev, interface); | |
| 61 | out_netdev: | |
| 62 | if (err) | |
| 63 | free_netdev(ndev); | |
| 64 | return err; | |
| 65 | } | |
| 66 | ||
| 67 | static int emac_arc_remove(struct platform_device *pdev) | |
| 68 | { | |
| 69 | struct net_device *ndev = platform_get_drvdata(pdev); | |
| 70 | int err; | |
| 71 | ||
| 72 | err = arc_emac_remove(ndev); | |
| 73 | free_netdev(ndev); | |
| 74 | return err; | |
| 75 | } | |
| 76 | ||
| 77 | static const struct of_device_id emac_arc_dt_ids[] = { | |
| 78 | { .compatible = "snps,arc-emac" }, | |
| 79 | { /* Sentinel */ } | |
| 80 | }; | |
| c7d778fa | 81 | MODULE_DEVICE_TABLE(of, emac_arc_dt_ids); |
| 23d2d9a6 RP |
82 | |
| 83 | static struct platform_driver emac_arc_driver = { | |
| 84 | .probe = emac_arc_probe, | |
| 85 | .remove = emac_arc_remove, | |
| 86 | .driver = { | |
| 87 | .name = DRV_NAME, | |
| 88 | .of_match_table = emac_arc_dt_ids, | |
| 89 | }, | |
| 90 | }; | |
| 91 | ||
| 92 | module_platform_driver(emac_arc_driver); | |
| 93 | ||
| 94 | MODULE_AUTHOR("Romain Perier <romain.perier@gmail.com>"); | |
| 95 | MODULE_DESCRIPTION("ARC EMAC platform driver"); | |
| 96 | MODULE_LICENSE("GPL"); |