47 #define MDC_PIN(bus)	(((struct gpio_priv *)bus->priv)->mdc_pin)  argument
48 #define MDIO_PIN(bus)	(((struct gpio_priv *)bus->priv)->mdio_pin)  argument
50 static inline void mdio_lo(struct mii_bus *bus)  in mdio_lo()  argument
52 	out_le32(gpio_regs+0x10, 1 << MDIO_PIN(bus));  in mdio_lo()
55 static inline void mdio_hi(struct mii_bus *bus)  in mdio_hi()  argument
57 	out_le32(gpio_regs, 1 << MDIO_PIN(bus));  in mdio_hi()
60 static inline void mdc_lo(struct mii_bus *bus)  in mdc_lo()  argument
62 	out_le32(gpio_regs+0x10, 1 << MDC_PIN(bus));  in mdc_lo()
65 static inline void mdc_hi(struct mii_bus *bus)  in mdc_hi()  argument
67 	out_le32(gpio_regs, 1 << MDC_PIN(bus));  in mdc_hi()
70 static inline void mdio_active(struct mii_bus *bus)  in mdio_active()  argument
72 	out_le32(gpio_regs+0x20, (1 << MDC_PIN(bus)) | (1 << MDIO_PIN(bus)));  in mdio_active()
75 static inline void mdio_tristate(struct mii_bus *bus)  in mdio_tristate()  argument
77 	out_le32(gpio_regs+0x30, (1 << MDIO_PIN(bus)));  in mdio_tristate()
80 static inline int mdio_read(struct mii_bus *bus)  in mdio_read()  argument
82 	return !!(in_le32(gpio_regs+0x40) & (1 << MDIO_PIN(bus)));  in mdio_read()
85 static void clock_out(struct mii_bus *bus, int bit)  in clock_out()  argument
88 		mdio_hi(bus);  in clock_out()
90 		mdio_lo(bus);  in clock_out()
92 	mdc_hi(bus);  in clock_out()
94 	mdc_lo(bus);  in clock_out()
98 static void bitbang_pre(struct mii_bus *bus, int read, u8 addr, u8 reg)  in bitbang_pre()  argument
103 	mdio_active(bus);  in bitbang_pre()
105 		clock_out(bus, 1);  in bitbang_pre()
109 	clock_out(bus, 0);  in bitbang_pre()
110 	clock_out(bus, 1);  in bitbang_pre()
112 	clock_out(bus, read);  in bitbang_pre()
113 	clock_out(bus, !read);  in bitbang_pre()
117 		clock_out(bus, (addr & 0x10) != 0);  in bitbang_pre()
123 		clock_out(bus, (reg & 0x10) != 0);  in bitbang_pre()
128 static int gpio_mdio_read(struct mii_bus *bus, int phy_id, int location)  in gpio_mdio_read()  argument
135 	bitbang_pre(bus, 1, addr, reg);  in gpio_mdio_read()
138 	mdio_tristate(bus);  in gpio_mdio_read()
140 	mdc_hi(bus);  in gpio_mdio_read()
142 	mdc_lo(bus);  in gpio_mdio_read()
147 		mdc_lo(bus);  in gpio_mdio_read()
149 		mdc_hi(bus);  in gpio_mdio_read()
151 		mdc_lo(bus);  in gpio_mdio_read()
154 		rdreg |= mdio_read(bus);  in gpio_mdio_read()
157 	mdc_hi(bus);  in gpio_mdio_read()
159 	mdc_lo(bus);  in gpio_mdio_read()
167 static int gpio_mdio_write(struct mii_bus *bus, int phy_id, int location, u16 val)  in gpio_mdio_write()  argument
175 	bitbang_pre(bus, 0, addr, reg);  in gpio_mdio_write()
178 	mdc_lo(bus);  in gpio_mdio_write()
179 	mdio_hi(bus);  in gpio_mdio_write()
181 	mdc_hi(bus);  in gpio_mdio_write()
183 	mdc_lo(bus);  in gpio_mdio_write()
184 	mdio_lo(bus);  in gpio_mdio_write()
186 	mdc_hi(bus);  in gpio_mdio_write()
191 		mdc_lo(bus);  in gpio_mdio_write()
193 			mdio_hi(bus);  in gpio_mdio_write()
195 			mdio_lo(bus);  in gpio_mdio_write()
197 		mdc_hi(bus);  in gpio_mdio_write()
205 	mdio_tristate(bus);  in gpio_mdio_write()
206 	mdc_lo(bus);  in gpio_mdio_write()
208 	mdc_hi(bus);  in gpio_mdio_write()
213 static int gpio_mdio_reset(struct mii_bus *bus)  in gpio_mdio_reset()  argument
280 	struct mii_bus *bus = dev_get_drvdata(&dev->dev);  in gpio_mdio_remove()  local
282 	mdiobus_unregister(bus);  in gpio_mdio_remove()
286 	kfree(bus->priv);  in gpio_mdio_remove()
287 	bus->priv = NULL;  in gpio_mdio_remove()
288 	mdiobus_free(bus);  in gpio_mdio_remove()