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// SPDX-License-Identifier: GPL-2.0+
/*
* Sophgo DWMAC platform driver
*
* Copyright (C) 2024 Inochi Amaoto <inochiama@gmail.com>
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include "stmmac_platform.h"
struct sophgo_dwmac_data {
bool has_internal_rx_delay;
};
static int sophgo_sg2044_dwmac_init(struct platform_device *pdev,
struct plat_stmmacenet_data *plat_dat,
struct stmmac_resources *stmmac_res)
{
plat_dat->clk_tx_i = devm_clk_get_enabled(&pdev->dev, "tx");
if (IS_ERR(plat_dat->clk_tx_i))
return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat->clk_tx_i),
"failed to get tx clock\n");
plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE;
plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;
plat_dat->multicast_filter_bins = 0;
return 0;
}
static int sophgo_dwmac_probe(struct platform_device *pdev)
{
struct plat_stmmacenet_data *plat_dat;
const struct sophgo_dwmac_data *data;
struct stmmac_resources stmmac_res;
struct device *dev = &pdev->dev;
int ret;
ret = stmmac_get_platform_resources(pdev, &stmmac_res);
if (ret)
return dev_err_probe(dev, ret,
"failed to get platform resources\n");
plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
if (IS_ERR(plat_dat))
return dev_err_probe(dev, PTR_ERR(plat_dat),
"failed to parse DT parameters\n");
ret = sophgo_sg2044_dwmac_init(pdev, plat_dat, &stmmac_res);
if (ret)
return ret;
data = device_get_match_data(&pdev->dev);
if (data && data->has_internal_rx_delay) {
plat_dat->phy_interface = phy_fix_phy_mode_for_mac_delays(plat_dat->phy_interface,
false, true);
if (plat_dat->phy_interface == PHY_INTERFACE_MODE_NA)
return -EINVAL;
}
return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
}
static const struct sophgo_dwmac_data sg2042_dwmac_data = {
.has_internal_rx_delay = true,
};
static const struct of_device_id sophgo_dwmac_match[] = {
{ .compatible = "sophgo,sg2042-dwmac", .data = &sg2042_dwmac_data },
{ .compatible = "sophgo,sg2044-dwmac" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sophgo_dwmac_match);
static struct platform_driver sophgo_dwmac_driver = {
.probe = sophgo_dwmac_probe,
.remove = stmmac_pltfr_remove,
.driver = {
.name = "sophgo-dwmac",
.pm = &stmmac_pltfr_pm_ops,
.of_match_table = sophgo_dwmac_match,
},
};
module_platform_driver(sophgo_dwmac_driver);
MODULE_AUTHOR("Inochi Amaoto <inochiama@gmail.com>");
MODULE_DESCRIPTION("Sophgo DWMAC platform driver");
MODULE_LICENSE("GPL");
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