23 #include <linux/mdio-bitbang.h>
31 	struct mdiobb_ctrl ctrl;  member
58 static inline void mdio_dir(struct mdiobb_ctrl *ctrl, int dir)  in mdio_dir()  argument
60 	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);  in mdio_dir()
63 		bb_set(bitbang->dir, bitbang->mdio_msk);  in mdio_dir()
65 		bb_clr(bitbang->dir, bitbang->mdio_msk);  in mdio_dir()
68 	in_be32(bitbang->dir);  in mdio_dir()
71 static inline int mdio_read(struct mdiobb_ctrl *ctrl)  in mdio_read()  argument
73 	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);  in mdio_read()
74 	return bb_read(bitbang->dat, bitbang->mdio_msk);  in mdio_read()
77 static inline void mdio(struct mdiobb_ctrl *ctrl, int what)  in mdio()  argument
79 	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);  in mdio()
82 		bb_set(bitbang->dat, bitbang->mdio_msk);  in mdio()
84 		bb_clr(bitbang->dat, bitbang->mdio_msk);  in mdio()
87 	in_be32(bitbang->dat);  in mdio()
90 static inline void mdc(struct mdiobb_ctrl *ctrl, int what)  in mdc()  argument
92 	struct bb_info *bitbang = container_of(ctrl, struct bb_info, ctrl);  in mdc()
95 		bb_set(bitbang->dat, bitbang->mdc_msk);  in mdc()
97 		bb_clr(bitbang->dat, bitbang->mdc_msk);  in mdc()
100 	in_be32(bitbang->dat);  in mdc()
115 	int mdio_pin, mdc_pin, len;  in fs_mii_bitbang_init()  local
116 	struct bb_info *bitbang = bus->priv;  in fs_mii_bitbang_init()
123 		return -ENODEV;  in fs_mii_bitbang_init()
129 	snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start);  in fs_mii_bitbang_init()
131 	data = of_get_property(np, "fsl,mdio-pin", &len);  in fs_mii_bitbang_init()
132 	if (!data || len != 4)  in fs_mii_bitbang_init()
133 		return -ENODEV;  in fs_mii_bitbang_init()
136 	data = of_get_property(np, "fsl,mdc-pin", &len);  in fs_mii_bitbang_init()
137 	if (!data || len != 4)  in fs_mii_bitbang_init()
138 		return -ENODEV;  in fs_mii_bitbang_init()
141 	bitbang->dir = ioremap(res.start, resource_size(&res));  in fs_mii_bitbang_init()
142 	if (!bitbang->dir)  in fs_mii_bitbang_init()
143 		return -ENOMEM;  in fs_mii_bitbang_init()
145 	bitbang->dat = bitbang->dir + 4;  in fs_mii_bitbang_init()
146 	bitbang->mdio_msk = 1 << (31 - mdio_pin);  in fs_mii_bitbang_init()
147 	bitbang->mdc_msk = 1 << (31 - mdc_pin);  in fs_mii_bitbang_init()
156 	int ret = -ENOMEM;  in fs_enet_mdio_probe()
162 	bitbang->ctrl.ops = &bb_ops;  in fs_enet_mdio_probe()
164 	new_bus = alloc_mdio_bitbang(&bitbang->ctrl);  in fs_enet_mdio_probe()
168 	new_bus->name = "CPM2 Bitbanged MII",  in fs_enet_mdio_probe()
170 	ret = fs_mii_bitbang_init(new_bus, ofdev->dev.of_node);  in fs_enet_mdio_probe()
174 	new_bus->phy_mask = ~0;  in fs_enet_mdio_probe()
176 	new_bus->parent = &ofdev->dev;  in fs_enet_mdio_probe()
179 	ret = of_mdiobus_register(new_bus, ofdev->dev.of_node);  in fs_enet_mdio_probe()
186 	iounmap(bitbang->dir);  in fs_enet_mdio_probe()
198 	struct bb_info *bitbang = bus->priv;  in fs_enet_mdio_remove()
202 	iounmap(bitbang->dir);  in fs_enet_mdio_remove()
210 		.compatible = "fsl,cpm2-mdio-bitbang",
218 		.name = "fsl-bb-mdio",