forked from Minki/linux
40e6b0ba91
Convert platform glue layer into a proper platform driver and add it to the build system. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
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* Amlogic Meson DWMAC glue layer
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*
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* Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/device.h>
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#include <linux/ethtool.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/stmmac.h>
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#include "stmmac_platform.h"
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#define ETHMAC_SPEED_100 BIT(1)
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struct meson_dwmac {
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struct device *dev;
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void __iomem *reg;
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};
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static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed)
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{
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struct meson_dwmac *dwmac = priv;
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unsigned int val;
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val = readl(dwmac->reg);
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switch (speed) {
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case SPEED_10:
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val &= ~ETHMAC_SPEED_100;
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break;
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case SPEED_100:
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val |= ETHMAC_SPEED_100;
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break;
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}
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writel(val, dwmac->reg);
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}
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static void *meson6_dwmac_setup(struct platform_device *pdev)
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{
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struct meson_dwmac *dwmac;
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struct resource *res;
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dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
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if (!dwmac)
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return ERR_PTR(-ENOMEM);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
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dwmac->reg = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(dwmac->reg))
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return ERR_CAST(dwmac->reg);
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return dwmac;
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}
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static const struct stmmac_of_data meson6_dwmac_data = {
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.setup = meson6_dwmac_setup,
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.fix_mac_speed = meson6_dwmac_fix_mac_speed,
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};
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static const struct of_device_id meson6_dwmac_match[] = {
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{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
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{ }
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};
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MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
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static struct platform_driver meson6_dwmac_driver = {
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.probe = stmmac_pltfr_probe,
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.remove = stmmac_pltfr_remove,
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.driver = {
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.name = "meson6-dwmac",
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.pm = &stmmac_pltfr_pm_ops,
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.of_match_table = meson6_dwmac_match,
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},
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};
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module_platform_driver(meson6_dwmac_driver);
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MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
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MODULE_DESCRIPTION("Amlogic Meson DWMAC glue layer");
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MODULE_LICENSE("GPL v2");
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