Lines Matching defs:bus

34 #define MDC_PIN(bus)	(((struct gpio_priv *)bus->priv)->mdc_pin)
35 #define MDIO_PIN(bus)	(((struct gpio_priv *)bus->priv)->mdio_pin)
37 static inline void mdio_lo(struct mii_bus *bus)
39 	out_le32(gpio_regs+0x10, 1 << MDIO_PIN(bus));
42 static inline void mdio_hi(struct mii_bus *bus)
44 	out_le32(gpio_regs, 1 << MDIO_PIN(bus));
47 static inline void mdc_lo(struct mii_bus *bus)
49 	out_le32(gpio_regs+0x10, 1 << MDC_PIN(bus));
52 static inline void mdc_hi(struct mii_bus *bus)
54 	out_le32(gpio_regs, 1 << MDC_PIN(bus));
57 static inline void mdio_active(struct mii_bus *bus)
59 	out_le32(gpio_regs+0x20, (1 << MDC_PIN(bus)) | (1 << MDIO_PIN(bus)));
62 static inline void mdio_tristate(struct mii_bus *bus)
64 	out_le32(gpio_regs+0x30, (1 << MDIO_PIN(bus)));
67 static inline int mdio_read(struct mii_bus *bus)
69 	return !!(in_le32(gpio_regs+0x40) & (1 << MDIO_PIN(bus)));
72 static void clock_out(struct mii_bus *bus, int bit)
75 		mdio_hi(bus);
77 		mdio_lo(bus);
79 	mdc_hi(bus);
81 	mdc_lo(bus);
85 static void bitbang_pre(struct mii_bus *bus, int read, u8 addr, u8 reg)
90 	mdio_active(bus);
92 		clock_out(bus, 1);
96 	clock_out(bus, 0);
97 	clock_out(bus, 1);
99 	clock_out(bus, read);
100 	clock_out(bus, !read);
104 		clock_out(bus, (addr & 0x10) != 0);
110 		clock_out(bus, (reg & 0x10) != 0);
115 static int gpio_mdio_read(struct mii_bus *bus, int phy_id, int location)
122 	bitbang_pre(bus, 1, addr, reg);
125 	mdio_tristate(bus);
127 	mdc_hi(bus);
129 	mdc_lo(bus);
134 		mdc_lo(bus);
136 		mdc_hi(bus);
138 		mdc_lo(bus);
141 		rdreg |= mdio_read(bus);
144 	mdc_hi(bus);
146 	mdc_lo(bus);
154 static int gpio_mdio_write(struct mii_bus *bus, int phy_id, int location, u16 val)
162 	bitbang_pre(bus, 0, addr, reg);
165 	mdc_lo(bus);
166 	mdio_hi(bus);
168 	mdc_hi(bus);
170 	mdc_lo(bus);
171 	mdio_lo(bus);
173 	mdc_hi(bus);
178 		mdc_lo(bus);
180 			mdio_hi(bus);
182 			mdio_lo(bus);
184 		mdc_hi(bus);
192 	mdio_tristate(bus);
193 	mdc_lo(bus);
195 	mdc_hi(bus);
200 static int gpio_mdio_reset(struct mii_bus *bus)
226 	new_bus->name = "pasemi gpio mdio bus";
247 		pr_err("%s: Cannot register as MDIO bus, err %d\n",
265 	struct mii_bus *bus = dev_get_drvdata(&dev->dev);
267 	mdiobus_unregister(bus);
271 	kfree(bus->priv);
272 	bus->priv = NULL;
273 	mdiobus_free(bus);