24 static int axienet_mdio_wait_until_ready(struct axienet_local *lp)  in axienet_mdio_wait_until_ready()  argument
28 	return readx_poll_timeout(axinet_ior_read_mcr, lp,  in axienet_mdio_wait_until_ready()
34 static void axienet_mdio_mdc_enable(struct axienet_local *lp)  in axienet_mdio_mdc_enable()  argument
36 	axienet_iow(lp, XAE_MDIO_MC_OFFSET,  in axienet_mdio_mdc_enable()
37 		    ((u32)lp->mii_clk_div | XAE_MDIO_MC_MDIOEN_MASK));  in axienet_mdio_mdc_enable()
41 static void axienet_mdio_mdc_disable(struct axienet_local *lp)  in axienet_mdio_mdc_disable()  argument
45 	mc_reg = axienet_ior(lp, XAE_MDIO_MC_OFFSET);  in axienet_mdio_mdc_disable()
46 	axienet_iow(lp, XAE_MDIO_MC_OFFSET,  in axienet_mdio_mdc_disable()
66 	struct axienet_local *lp = bus->priv;  in axienet_mdio_read()  local
68 	axienet_mdio_mdc_enable(lp);  in axienet_mdio_read()
70 	ret = axienet_mdio_wait_until_ready(lp);  in axienet_mdio_read()
72 		axienet_mdio_mdc_disable(lp);  in axienet_mdio_read()
76 	axienet_iow(lp, XAE_MDIO_MCR_OFFSET,  in axienet_mdio_read()
84 	ret = axienet_mdio_wait_until_ready(lp);  in axienet_mdio_read()
86 		axienet_mdio_mdc_disable(lp);  in axienet_mdio_read()
90 	rc = axienet_ior(lp, XAE_MDIO_MRD_OFFSET) & 0x0000FFFF;  in axienet_mdio_read()
92 	dev_dbg(lp->dev, "axienet_mdio_read(phy_id=%i, reg=%x) == %x\n",  in axienet_mdio_read()
95 	axienet_mdio_mdc_disable(lp);  in axienet_mdio_read()
116 	struct axienet_local *lp = bus->priv;  in axienet_mdio_write()  local
118 	dev_dbg(lp->dev, "axienet_mdio_write(phy_id=%i, reg=%x, val=%x)\n",  in axienet_mdio_write()
121 	axienet_mdio_mdc_enable(lp);  in axienet_mdio_write()
123 	ret = axienet_mdio_wait_until_ready(lp);  in axienet_mdio_write()
125 		axienet_mdio_mdc_disable(lp);  in axienet_mdio_write()
129 	axienet_iow(lp, XAE_MDIO_MWD_OFFSET, (u32)val);  in axienet_mdio_write()
130 	axienet_iow(lp, XAE_MDIO_MCR_OFFSET,  in axienet_mdio_write()
138 	ret = axienet_mdio_wait_until_ready(lp);  in axienet_mdio_write()
140 		axienet_mdio_mdc_disable(lp);  in axienet_mdio_write()
143 	axienet_mdio_mdc_disable(lp);  in axienet_mdio_write()
158 static int axienet_mdio_enable(struct axienet_local *lp, struct device_node *np)  in axienet_mdio_enable()  argument
165 	lp->mii_clk_div = 0;  in axienet_mdio_enable()
167 	if (lp->axi_clk) {  in axienet_mdio_enable()
168 		host_clock = clk_get_rate(lp->axi_clk);  in axienet_mdio_enable()
177 			netdev_warn(lp->ndev, "Could not find CPU device node.\n");  in axienet_mdio_enable()
183 				netdev_warn(lp->ndev, "CPU clock-frequency property not found.\n");  in axienet_mdio_enable()
188 		netdev_info(lp->ndev, "Setting assumed host clock to %u\n",  in axienet_mdio_enable()
195 		netdev_info(lp->ndev, "Setting non-standard mdio bus frequency to %u Hz\n",  in axienet_mdio_enable()
234 		netdev_warn(lp->ndev, "MDIO clock divisor overflow\n");  in axienet_mdio_enable()
237 	lp->mii_clk_div = (u8)clk_div;  in axienet_mdio_enable()
239 	netdev_dbg(lp->ndev,  in axienet_mdio_enable()
241 		   lp->mii_clk_div, host_clock);  in axienet_mdio_enable()
243 	axienet_mdio_mdc_enable(lp);  in axienet_mdio_enable()
245 	ret = axienet_mdio_wait_until_ready(lp);  in axienet_mdio_enable()
247 		axienet_mdio_mdc_disable(lp);  in axienet_mdio_enable()
263 int axienet_mdio_setup(struct axienet_local *lp)  in axienet_mdio_setup()  argument
274 		 (unsigned long long)lp->regs_start);  in axienet_mdio_setup()
276 	bus->priv = lp;  in axienet_mdio_setup()
280 	bus->parent = lp->dev;  in axienet_mdio_setup()
281 	lp->mii_bus = bus;  in axienet_mdio_setup()
283 	mdio_node = of_get_child_by_name(lp->dev->of_node, "mdio");  in axienet_mdio_setup()
284 	ret = axienet_mdio_enable(lp, mdio_node);  in axienet_mdio_setup()
291 	axienet_mdio_mdc_disable(lp);  in axienet_mdio_setup()
295 	axienet_mdio_mdc_disable(lp);  in axienet_mdio_setup()
299 	lp->mii_bus = NULL;  in axienet_mdio_setup()
309 void axienet_mdio_teardown(struct axienet_local *lp)  in axienet_mdio_teardown()  argument
311 	mdiobus_unregister(lp->mii_bus);  in axienet_mdio_teardown()
312 	mdiobus_free(lp->mii_bus);  in axienet_mdio_teardown()
313 	lp->mii_bus = NULL;  in axienet_mdio_teardown()