1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/**
* 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");
|
