1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2024 Schneider-Electric
4 *
5 * Clément Léger <clement.leger@bootlin.com>
6 */
7
8 #include <linux/of.h>
9 #include <linux/pcs-rzn1-miic.h>
10 #include <linux/phylink.h>
11 #include <linux/platform_device.h>
12
13 #include "stmmac_platform.h"
14 #include "stmmac.h"
15
rzn1_dwmac_pcs_init(struct stmmac_priv * priv)16 static int rzn1_dwmac_pcs_init(struct stmmac_priv *priv)
17 {
18 struct device_node *np = priv->device->of_node;
19 struct device_node *pcs_node;
20 struct phylink_pcs *pcs;
21
22 pcs_node = of_parse_phandle(np, "pcs-handle", 0);
23
24 if (pcs_node) {
25 pcs = miic_create(priv->device, pcs_node);
26 of_node_put(pcs_node);
27 if (IS_ERR(pcs))
28 return PTR_ERR(pcs);
29
30 priv->hw->phylink_pcs = pcs;
31 }
32
33 return 0;
34 }
35
rzn1_dwmac_pcs_exit(struct stmmac_priv * priv)36 static void rzn1_dwmac_pcs_exit(struct stmmac_priv *priv)
37 {
38 if (priv->hw->phylink_pcs)
39 miic_destroy(priv->hw->phylink_pcs);
40 }
41
rzn1_dwmac_select_pcs(struct stmmac_priv * priv,phy_interface_t interface)42 static struct phylink_pcs *rzn1_dwmac_select_pcs(struct stmmac_priv *priv,
43 phy_interface_t interface)
44 {
45 return priv->hw->phylink_pcs;
46 }
47
rzn1_dwmac_probe(struct platform_device * pdev)48 static int rzn1_dwmac_probe(struct platform_device *pdev)
49 {
50 struct plat_stmmacenet_data *plat_dat;
51 struct stmmac_resources stmmac_res;
52 struct device *dev = &pdev->dev;
53 int ret;
54
55 ret = stmmac_get_platform_resources(pdev, &stmmac_res);
56 if (ret)
57 return ret;
58
59 plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
60 if (IS_ERR(plat_dat))
61 return PTR_ERR(plat_dat);
62
63 plat_dat->bsp_priv = plat_dat;
64 plat_dat->pcs_init = rzn1_dwmac_pcs_init;
65 plat_dat->pcs_exit = rzn1_dwmac_pcs_exit;
66 plat_dat->select_pcs = rzn1_dwmac_select_pcs;
67
68 ret = stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
69 if (ret)
70 return ret;
71
72 return 0;
73 }
74
75 static const struct of_device_id rzn1_dwmac_match[] = {
76 { .compatible = "renesas,rzn1-gmac" },
77 { }
78 };
79 MODULE_DEVICE_TABLE(of, rzn1_dwmac_match);
80
81 static struct platform_driver rzn1_dwmac_driver = {
82 .probe = rzn1_dwmac_probe,
83 .remove_new = stmmac_pltfr_remove,
84 .driver = {
85 .name = "rzn1-dwmac",
86 .of_match_table = rzn1_dwmac_match,
87 },
88 };
89 module_platform_driver(rzn1_dwmac_driver);
90
91 MODULE_AUTHOR("Clément Léger <clement.leger@bootlin.com>");
92 MODULE_DESCRIPTION("Renesas RZN1 DWMAC specific glue layer");
93 MODULE_LICENSE("GPL");
94