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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
23d2d9a6 RP |
2 | /** |
3 | * emac_arc.c - ARC EMAC specific glue layer | |
4 | * | |
5 | * Copyright (C) 2014 Romain Perier | |
6 | * | |
7 | * Romain Perier <romain.perier@gmail.com> | |
23d2d9a6 RP |
8 | */ |
9 | ||
10 | #include <linux/etherdevice.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/of_net.h> | |
13 | #include <linux/platform_device.h> | |
14 | ||
15 | #include "emac.h" | |
16 | ||
17 | #define DRV_NAME "emac_arc" | |
18 | #define DRV_VERSION "1.0" | |
19 | ||
20 | static int emac_arc_probe(struct platform_device *pdev) | |
21 | { | |
22 | struct device *dev = &pdev->dev; | |
23 | struct net_device *ndev; | |
24 | struct arc_emac_priv *priv; | |
25 | int interface, err; | |
26 | ||
27 | if (!dev->of_node) | |
28 | return -ENODEV; | |
29 | ||
30 | ndev = alloc_etherdev(sizeof(struct arc_emac_priv)); | |
31 | if (!ndev) | |
32 | return -ENOMEM; | |
33 | platform_set_drvdata(pdev, ndev); | |
34 | SET_NETDEV_DEV(ndev, dev); | |
35 | ||
36 | priv = netdev_priv(ndev); | |
37 | priv->drv_name = DRV_NAME; | |
38 | priv->drv_version = DRV_VERSION; | |
39 | ||
40 | interface = of_get_phy_mode(dev->of_node); | |
41 | if (interface < 0) | |
42 | interface = PHY_INTERFACE_MODE_MII; | |
43 | ||
44 | priv->clk = devm_clk_get(dev, "hclk"); | |
45 | if (IS_ERR(priv->clk)) { | |
46 | dev_err(dev, "failed to retrieve host clock from device tree\n"); | |
47 | err = -EINVAL; | |
48 | goto out_netdev; | |
49 | } | |
50 | ||
51 | err = arc_emac_probe(ndev, interface); | |
52 | out_netdev: | |
53 | if (err) | |
54 | free_netdev(ndev); | |
55 | return err; | |
56 | } | |
57 | ||
58 | static int emac_arc_remove(struct platform_device *pdev) | |
59 | { | |
60 | struct net_device *ndev = platform_get_drvdata(pdev); | |
61 | int err; | |
62 | ||
63 | err = arc_emac_remove(ndev); | |
64 | free_netdev(ndev); | |
65 | return err; | |
66 | } | |
67 | ||
68 | static const struct of_device_id emac_arc_dt_ids[] = { | |
69 | { .compatible = "snps,arc-emac" }, | |
70 | { /* Sentinel */ } | |
71 | }; | |
c7d778fa | 72 | MODULE_DEVICE_TABLE(of, emac_arc_dt_ids); |
23d2d9a6 RP |
73 | |
74 | static struct platform_driver emac_arc_driver = { | |
75 | .probe = emac_arc_probe, | |
76 | .remove = emac_arc_remove, | |
77 | .driver = { | |
78 | .name = DRV_NAME, | |
79 | .of_match_table = emac_arc_dt_ids, | |
80 | }, | |
81 | }; | |
82 | ||
83 | module_platform_driver(emac_arc_driver); | |
84 | ||
85 | MODULE_AUTHOR("Romain Perier <romain.perier@gmail.com>"); | |
86 | MODULE_DESCRIPTION("ARC EMAC platform driver"); | |
87 | MODULE_LICENSE("GPL"); |