2  * Hisilicon Fast Ethernet MDIO Bus Driver
40 static int hisi_femac_mdio_wait_ready(struct hisi_femac_mdio_data *data)  in hisi_femac_mdio_wait_ready()  argument
44 	return readl_poll_timeout(data->membase + MDIO_RWCTRL,  in hisi_femac_mdio_wait_ready()
48 static int hisi_femac_mdio_read(struct mii_bus *bus, int mii_id, int regnum)  in hisi_femac_mdio_read()  argument
50 	struct hisi_femac_mdio_data *data = bus->priv;  in hisi_femac_mdio_read()  local
53 	ret = hisi_femac_mdio_wait_ready(data);  in hisi_femac_mdio_read()
58 	       data->membase + MDIO_RWCTRL);  in hisi_femac_mdio_read()
60 	ret = hisi_femac_mdio_wait_ready(data);  in hisi_femac_mdio_read()
64 	return readl(data->membase + MDIO_RO_DATA) & 0xFFFF;  in hisi_femac_mdio_read()
67 static int hisi_femac_mdio_write(struct mii_bus *bus, int mii_id, int regnum,  in hisi_femac_mdio_write()  argument
70 	struct hisi_femac_mdio_data *data = bus->priv;  in hisi_femac_mdio_write()  local
73 	ret = hisi_femac_mdio_wait_ready(data);  in hisi_femac_mdio_write()
79 	       data->membase + MDIO_RWCTRL);  in hisi_femac_mdio_write()
81 	return hisi_femac_mdio_wait_ready(data);  in hisi_femac_mdio_write()
86 	struct device_node *np = pdev->dev.of_node;  in hisi_femac_mdio_probe()
87 	struct mii_bus *bus;  in hisi_femac_mdio_probe()  local
88 	struct hisi_femac_mdio_data *data;  in hisi_femac_mdio_probe()  local
92 	bus = mdiobus_alloc_size(sizeof(*data));  in hisi_femac_mdio_probe()
93 	if (!bus)  in hisi_femac_mdio_probe()
94 		return -ENOMEM;  in hisi_femac_mdio_probe()
96 	bus->name = "hisi_femac_mii_bus";  in hisi_femac_mdio_probe()
97 	bus->read = &hisi_femac_mdio_read;  in hisi_femac_mdio_probe()
98 	bus->write = &hisi_femac_mdio_write;  in hisi_femac_mdio_probe()
99 	snprintf(bus->id, MII_BUS_ID_SIZE, "%s", pdev->name);  in hisi_femac_mdio_probe()
100 	bus->parent = &pdev->dev;  in hisi_femac_mdio_probe()
102 	data = bus->priv;  in hisi_femac_mdio_probe()
104 	data->membase = devm_ioremap_resource(&pdev->dev, res);  in hisi_femac_mdio_probe()
105 	if (IS_ERR(data->membase)) {  in hisi_femac_mdio_probe()
106 		ret = PTR_ERR(data->membase);  in hisi_femac_mdio_probe()
110 	data->clk = devm_clk_get(&pdev->dev, NULL);  in hisi_femac_mdio_probe()
111 	if (IS_ERR(data->clk)) {  in hisi_femac_mdio_probe()
112 		ret = PTR_ERR(data->clk);  in hisi_femac_mdio_probe()
116 	ret = clk_prepare_enable(data->clk);  in hisi_femac_mdio_probe()
120 	ret = of_mdiobus_register(bus, np);  in hisi_femac_mdio_probe()
124 	platform_set_drvdata(pdev, bus);  in hisi_femac_mdio_probe()
129 	clk_disable_unprepare(data->clk);  in hisi_femac_mdio_probe()
131 	mdiobus_free(bus);  in hisi_femac_mdio_probe()
137 	struct mii_bus *bus = platform_get_drvdata(pdev);  in hisi_femac_mdio_remove()  local
138 	struct hisi_femac_mdio_data *data = bus->priv;  in hisi_femac_mdio_remove()  local
140 	mdiobus_unregister(bus);  in hisi_femac_mdio_remove()
141 	clk_disable_unprepare(data->clk);  in hisi_femac_mdio_remove()
142 	mdiobus_free(bus);  in hisi_femac_mdio_remove()
148 	{ .compatible = "hisilicon,hisi-femac-mdio" },
157 		.name = "hisi-femac-mdio",