46 #define MDC_PIN(bus)	(((struct gpio_priv *)bus->priv)->mdc_pin)  argument
47 #define MDIO_PIN(bus)	(((struct gpio_priv *)bus->priv)->mdio_pin)  argument
49 static inline void mdio_lo(struct mii_bus *bus)  in mdio_lo()  argument
51 	out_le32(gpio_regs+0x10, 1 << MDIO_PIN(bus));  in mdio_lo()
54 static inline void mdio_hi(struct mii_bus *bus)  in mdio_hi()  argument
56 	out_le32(gpio_regs, 1 << MDIO_PIN(bus));  in mdio_hi()
59 static inline void mdc_lo(struct mii_bus *bus)  in mdc_lo()  argument
61 	out_le32(gpio_regs+0x10, 1 << MDC_PIN(bus));  in mdc_lo()
64 static inline void mdc_hi(struct mii_bus *bus)  in mdc_hi()  argument
66 	out_le32(gpio_regs, 1 << MDC_PIN(bus));  in mdc_hi()
69 static inline void mdio_active(struct mii_bus *bus)  in mdio_active()  argument
71 	out_le32(gpio_regs+0x20, (1 << MDC_PIN(bus)) | (1 << MDIO_PIN(bus)));  in mdio_active()
74 static inline void mdio_tristate(struct mii_bus *bus)  in mdio_tristate()  argument
76 	out_le32(gpio_regs+0x30, (1 << MDIO_PIN(bus)));  in mdio_tristate()
79 static inline int mdio_read(struct mii_bus *bus)  in mdio_read()  argument
81 	return !!(in_le32(gpio_regs+0x40) & (1 << MDIO_PIN(bus)));  in mdio_read()
84 static void clock_out(struct mii_bus *bus, int bit)  in clock_out()  argument
87 		mdio_hi(bus);  in clock_out()
89 		mdio_lo(bus);  in clock_out()
91 	mdc_hi(bus);  in clock_out()
93 	mdc_lo(bus);  in clock_out()
97 static void bitbang_pre(struct mii_bus *bus, int read, u8 addr, u8 reg)  in bitbang_pre()  argument
102 	mdio_active(bus);  in bitbang_pre()
104 		clock_out(bus, 1);  in bitbang_pre()
108 	clock_out(bus, 0);  in bitbang_pre()
109 	clock_out(bus, 1);  in bitbang_pre()
111 	clock_out(bus, read);  in bitbang_pre()
112 	clock_out(bus, !read);  in bitbang_pre()
116 		clock_out(bus, (addr & 0x10) != 0);  in bitbang_pre()
122 		clock_out(bus, (reg & 0x10) != 0);  in bitbang_pre()
127 static int gpio_mdio_read(struct mii_bus *bus, int phy_id, int location)  in gpio_mdio_read()  argument
134 	bitbang_pre(bus, 1, addr, reg);  in gpio_mdio_read()
137 	mdio_tristate(bus);  in gpio_mdio_read()
139 	mdc_hi(bus);  in gpio_mdio_read()
141 	mdc_lo(bus);  in gpio_mdio_read()
146 		mdc_lo(bus);  in gpio_mdio_read()
148 		mdc_hi(bus);  in gpio_mdio_read()
150 		mdc_lo(bus);  in gpio_mdio_read()
153 		rdreg |= mdio_read(bus);  in gpio_mdio_read()
156 	mdc_hi(bus);  in gpio_mdio_read()
158 	mdc_lo(bus);  in gpio_mdio_read()
166 static int gpio_mdio_write(struct mii_bus *bus, int phy_id, int location, u16 val)  in gpio_mdio_write()  argument
174 	bitbang_pre(bus, 0, addr, reg);  in gpio_mdio_write()
177 	mdc_lo(bus);  in gpio_mdio_write()
178 	mdio_hi(bus);  in gpio_mdio_write()
180 	mdc_hi(bus);  in gpio_mdio_write()
182 	mdc_lo(bus);  in gpio_mdio_write()
183 	mdio_lo(bus);  in gpio_mdio_write()
185 	mdc_hi(bus);  in gpio_mdio_write()
190 		mdc_lo(bus);  in gpio_mdio_write()
192 			mdio_hi(bus);  in gpio_mdio_write()
194 			mdio_lo(bus);  in gpio_mdio_write()
196 		mdc_hi(bus);  in gpio_mdio_write()
204 	mdio_tristate(bus);  in gpio_mdio_write()
205 	mdc_lo(bus);  in gpio_mdio_write()
207 	mdc_hi(bus);  in gpio_mdio_write()
212 static int gpio_mdio_reset(struct mii_bus *bus)  in gpio_mdio_reset()  argument
277 	struct mii_bus *bus = dev_get_drvdata(&dev->dev);  in gpio_mdio_remove()  local
279 	mdiobus_unregister(bus);  in gpio_mdio_remove()
283 	kfree(bus->priv);  in gpio_mdio_remove()
284 	bus->priv = NULL;  in gpio_mdio_remove()
285 	mdiobus_free(bus);  in gpio_mdio_remove()