96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
|
/**
|
||
|
|
* 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 */ }
|
||
|
|
};
|
||
|
|
|
||
|
|
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");
|