f360446ec1
Add support for the Renesas RZ/N1 GMAC. This support can make use of a custom RZ/N1 PCS which is fetched by parsing the pcs-handle device tree property. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Co-developed-by: Romain Gantois <romain.gantois@bootlin.com> Signed-off-by: Romain Gantois <romain.gantois@bootlin.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Hariprasad Kelam <hkelam@marvell.com> Link: https://lore.kernel.org/r/20240513-rzn1-gmac1-v7-6-6acf58b5440d@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2024 Schneider-Electric
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*
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* Clément Léger <clement.leger@bootlin.com>
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*/
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#include <linux/of.h>
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#include <linux/pcs-rzn1-miic.h>
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#include <linux/phylink.h>
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#include <linux/platform_device.h>
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#include "stmmac_platform.h"
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#include "stmmac.h"
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static int rzn1_dwmac_pcs_init(struct stmmac_priv *priv)
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{
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struct device_node *np = priv->device->of_node;
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struct device_node *pcs_node;
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struct phylink_pcs *pcs;
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pcs_node = of_parse_phandle(np, "pcs-handle", 0);
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if (pcs_node) {
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pcs = miic_create(priv->device, pcs_node);
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of_node_put(pcs_node);
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if (IS_ERR(pcs))
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return PTR_ERR(pcs);
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priv->hw->phylink_pcs = pcs;
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}
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return 0;
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}
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static void rzn1_dwmac_pcs_exit(struct stmmac_priv *priv)
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{
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if (priv->hw->phylink_pcs)
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miic_destroy(priv->hw->phylink_pcs);
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}
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static int rzn1_dwmac_probe(struct platform_device *pdev)
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{
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struct plat_stmmacenet_data *plat_dat;
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struct stmmac_resources stmmac_res;
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struct device *dev = &pdev->dev;
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int ret;
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ret = stmmac_get_platform_resources(pdev, &stmmac_res);
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if (ret)
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return ret;
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plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
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if (IS_ERR(plat_dat))
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return PTR_ERR(plat_dat);
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plat_dat->bsp_priv = plat_dat;
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plat_dat->pcs_init = rzn1_dwmac_pcs_init;
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plat_dat->pcs_exit = rzn1_dwmac_pcs_exit;
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ret = stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
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if (ret)
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return ret;
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return 0;
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}
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static const struct of_device_id rzn1_dwmac_match[] = {
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{ .compatible = "renesas,rzn1-gmac" },
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{ }
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};
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MODULE_DEVICE_TABLE(of, rzn1_dwmac_match);
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static struct platform_driver rzn1_dwmac_driver = {
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.probe = rzn1_dwmac_probe,
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.remove_new = stmmac_pltfr_remove,
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.driver = {
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.name = "rzn1-dwmac",
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.of_match_table = rzn1_dwmac_match,
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},
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};
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module_platform_driver(rzn1_dwmac_driver);
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MODULE_AUTHOR("Clément Léger <clement.leger@bootlin.com>");
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MODULE_DESCRIPTION("Renesas RZN1 DWMAC specific glue layer");
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MODULE_LICENSE("GPL");
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