1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Loongson-1 DWMAC glue layer
5  * Copyright (C) 2011-2023 Keguang Zhang <keguang.zhang@gmail.com>
21 /* Loongson-1 SYSCON Registers */
25 /* Loongson-1B SYSCON Register Bits */
37 /* Loongson-1C SYSCON Register Bits */
52 	struct plat_stmmacenet_data *plat = dwmac->plat_dat;  in ls1b_dwmac_syscon_init()
53 	struct regmap *regmap = dwmac->regmap;  in ls1b_dwmac_syscon_init()
59 		dev_err(&pdev->dev, "Could not get IO_MEM resources\n");  in ls1b_dwmac_syscon_init()
60 		return -EINVAL;  in ls1b_dwmac_syscon_init()
62 	reg_base = (unsigned long)res->start;  in ls1b_dwmac_syscon_init()
65 		switch (plat->phy_interface) {  in ls1b_dwmac_syscon_init()
77 			dev_err(&pdev->dev, "Unsupported PHY mode %u\n",  in ls1b_dwmac_syscon_init()
78 				plat->phy_interface);  in ls1b_dwmac_syscon_init()
79 			return -EOPNOTSUPP;  in ls1b_dwmac_syscon_init()
88 		switch (plat->phy_interface) {  in ls1b_dwmac_syscon_init()
101 			dev_err(&pdev->dev, "Unsupported PHY mode %u\n",  in ls1b_dwmac_syscon_init()
102 				plat->phy_interface);  in ls1b_dwmac_syscon_init()
103 			return -EOPNOTSUPP;  in ls1b_dwmac_syscon_init()
108 		dev_err(&pdev->dev, "Invalid Ethernet MAC base address %lx",  in ls1b_dwmac_syscon_init()
110 		return -EINVAL;  in ls1b_dwmac_syscon_init()
119 	struct plat_stmmacenet_data *plat = dwmac->plat_dat;  in ls1c_dwmac_syscon_init()
120 	struct regmap *regmap = dwmac->regmap;  in ls1c_dwmac_syscon_init()
122 	switch (plat->phy_interface) {  in ls1c_dwmac_syscon_init()
132 		dev_err(&pdev->dev, "Unsupported PHY-mode %u\n",  in ls1c_dwmac_syscon_init()
133 			plat->phy_interface);  in ls1c_dwmac_syscon_init()
134 		return -EOPNOTSUPP;  in ls1c_dwmac_syscon_init()
156 	regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,  in ls1x_dwmac_probe()
157 						 "loongson,ls1-syscon");  in ls1x_dwmac_probe()
159 		return dev_err_probe(&pdev->dev, PTR_ERR(regmap),  in ls1x_dwmac_probe()
162 	init = of_device_get_match_data(&pdev->dev);  in ls1x_dwmac_probe()
164 		dev_err(&pdev->dev, "No of match data provided\n");  in ls1x_dwmac_probe()
165 		return -EINVAL;  in ls1x_dwmac_probe()
168 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);  in ls1x_dwmac_probe()
170 		return -ENOMEM;  in ls1x_dwmac_probe()
174 		return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat),  in ls1x_dwmac_probe()
177 	plat_dat->bsp_priv = dwmac;  in ls1x_dwmac_probe()
178 	plat_dat->init = init;  in ls1x_dwmac_probe()
179 	dwmac->plat_dat = plat_dat;  in ls1x_dwmac_probe()
180 	dwmac->regmap = regmap;  in ls1x_dwmac_probe()
187 		.compatible = "loongson,ls1b-gmac",
191 		.compatible = "loongson,ls1c-emac",
201 		.name = "loongson1-dwmac",
208 MODULE_DESCRIPTION("Loongson-1 DWMAC glue layer");