14 #include <linux/mdio/mdio-mscc-miim.h>
76 	struct mscc_miim_dev *miim = bus->priv;  in mscc_miim_status()  local
79 	ret = regmap_read(miim->regs,  in mscc_miim_status()
80 			  MSCC_MIIM_REG_STATUS + miim->mii_status_offset, &val);  in mscc_miim_status()
82 		WARN_ONCE(1, "mscc miim status read error %d\n", ret);  in mscc_miim_status()
109 	struct mscc_miim_dev *miim = bus->priv;  in mscc_miim_read()  local
117 	ret = regmap_write(miim->regs,  in mscc_miim_read()
118 			   MSCC_MIIM_REG_CMD + miim->mii_status_offset,  in mscc_miim_read()
125 		WARN_ONCE(1, "mscc miim write cmd reg error %d\n", ret);  in mscc_miim_read()
133 	ret = regmap_read(miim->regs,  in mscc_miim_read()
134 			  MSCC_MIIM_REG_DATA + miim->mii_status_offset, &val);  in mscc_miim_read()
136 		WARN_ONCE(1, "mscc miim read data reg error %d\n", ret);  in mscc_miim_read()
140 	if (!miim->ignore_read_errors && !!(val & MSCC_MIIM_DATA_ERROR)) {  in mscc_miim_read()
153 	struct mscc_miim_dev *miim = bus->priv;  in mscc_miim_write()  local
160 	ret = regmap_write(miim->regs,  in mscc_miim_write()
161 			   MSCC_MIIM_REG_CMD + miim->mii_status_offset,  in mscc_miim_write()
169 		WARN_ONCE(1, "mscc miim write error %d\n", ret);  in mscc_miim_write()
176 	struct mscc_miim_dev *miim = bus->priv;  in mscc_miim_reset()  local
180 	if (!miim->phy_regs)  in mscc_miim_reset()
183 	offset = miim->info->phy_reset_offset;  in mscc_miim_reset()
184 	bits = miim->info->phy_reset_bits;  in mscc_miim_reset()
186 	ret = regmap_update_bits(miim->phy_regs, offset, bits, 0);  in mscc_miim_reset()
192 	ret = regmap_update_bits(miim->phy_regs, offset, bits, bits);  in mscc_miim_reset()
220 	struct mscc_miim_dev *miim;  in mscc_miim_setup()  local
223 	bus = devm_mdiobus_alloc_size(dev, sizeof(*miim));  in mscc_miim_setup()
234 	miim = bus->priv;  in mscc_miim_setup()
238 	miim->regs = mii_regmap;  in mscc_miim_setup()
239 	miim->mii_status_offset = status_offset;  in mscc_miim_setup()
240 	miim->ignore_read_errors = ignore_read_errors;  in mscc_miim_setup()
250 	struct mscc_miim_dev *miim = bus->priv;  in mscc_miim_clk_set()  local
255 	if (!miim->bus_freq)  in mscc_miim_clk_set()
258 	rate = clk_get_rate(miim->clk);  in mscc_miim_clk_set()
260 	div = DIV_ROUND_UP(rate, 2 * miim->bus_freq) - 1;  in mscc_miim_clk_set()
266 	return regmap_update_bits(miim->regs, MSCC_MIIM_REG_CFG,  in mscc_miim_clk_set()
276 	struct mscc_miim_dev *miim;  in mscc_miim_probe()  local
290 				     "Unable to create MIIM regmap\n");  in mscc_miim_probe()
305 	miim = bus->priv;  in mscc_miim_probe()
306 	miim->phy_regs = phy_regmap;  in mscc_miim_probe()
308 	miim->info = device_get_match_data(dev);  in mscc_miim_probe()
309 	if (!miim->info)  in mscc_miim_probe()
312 	miim->clk = devm_clk_get_optional(dev, NULL);  in mscc_miim_probe()
313 	if (IS_ERR(miim->clk))  in mscc_miim_probe()
314 		return PTR_ERR(miim->clk);  in mscc_miim_probe()
316 	of_property_read_u32(np, "clock-frequency", &miim->bus_freq);  in mscc_miim_probe()
318 	if (miim->bus_freq && !miim->clk) {  in mscc_miim_probe()
323 	ret = clk_prepare_enable(miim->clk);  in mscc_miim_probe()
342 	clk_disable_unprepare(miim->clk);  in mscc_miim_probe()
349 	struct mscc_miim_dev *miim = bus->priv;  in mscc_miim_remove()  local
351 	clk_disable_unprepare(miim->clk);  in mscc_miim_remove()
368 		.compatible = "mscc,ocelot-miim",
371 		.compatible = "microchip,lan966x-miim",
382 		.name = "mscc-miim",
389 MODULE_DESCRIPTION("Microsemi MIIM driver");