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/*
* Amlogic Meson DWMAC glue layer
*
* Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/device.h>
#include <linux/ethtool.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/stmmac.h>
#include "stmmac_platform.h"
#define ETHMAC_SPEED_100 BIT(1)
struct meson_dwmac {
struct device *dev;
void __iomem *reg;
};
static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed)
{
struct meson_dwmac *dwmac = priv;
unsigned int val;
val = readl(dwmac->reg);
switch (speed) {
case SPEED_10:
val &= ~ETHMAC_SPEED_100;
break;
case SPEED_100:
val |= ETHMAC_SPEED_100;
break;
}
writel(val, dwmac->reg);
}
static void *meson6_dwmac_setup(struct platform_device *pdev)
{
struct meson_dwmac *dwmac;
struct resource *res;
dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
if (!dwmac)
return ERR_PTR(-ENOMEM);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
dwmac->reg = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(dwmac->reg))
return ERR_CAST(dwmac->reg);
return dwmac;
}
static const struct stmmac_of_data meson6_dwmac_data = {
.setup = meson6_dwmac_setup,
.fix_mac_speed = meson6_dwmac_fix_mac_speed,
};
static const struct of_device_id meson6_dwmac_match[] = {
{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
{ }
};
MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
static struct platform_driver meson6_dwmac_driver = {
.probe = stmmac_pltfr_probe,
.remove = stmmac_pltfr_remove,
.driver = {
.name = "meson6-dwmac",
.pm = &stmmac_pltfr_pm_ops,
.of_match_table = meson6_dwmac_match,
},
};
module_platform_driver(meson6_dwmac_driver);
MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
MODULE_DESCRIPTION("Amlogic Meson DWMAC glue layer");
MODULE_LICENSE("GPL v2");
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