1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
61 #define	MDO			sc->miibb_ops.mbo_bits[MII_BIT_MDO]
62 #define	MDI			sc->miibb_ops.mbo_bits[MII_BIT_MDI]
63 #define	MDC			sc->miibb_ops.mbo_bits[MII_BIT_MDC]
64 #define	MDIRPHY			sc->miibb_ops.mbo_bits[MII_BIT_DIR_HOST_PHY]
65 #define	MDIRHOST		sc->miibb_ops.mbo_bits[MII_BIT_DIR_PHY_HOST]
90 	if (devi->npins < GPIOMDIO_MIN_PINS) {  in gpiomdio_probe()
93 		    GPIOMDIO_MIN_PINS, devi->npins);  in gpiomdio_probe()
96 	device_set_desc(dev, "GPIO MDIO bit-banging Bus driver");  in gpiomdio_probe()
105 	pcell_t			pin;  in gpiomdio_attach()  local
110 	sc->sc_dev = dev;  in gpiomdio_attach()
111 	sc->sc_busdev = device_get_parent(dev);  in gpiomdio_attach()
113 	if ((node = ofw_bus_get_node(dev)) == -1)  in gpiomdio_attach()
115 	if (OF_getencprop(node, "mdc", &pin, sizeof(pin)) > 0)  in gpiomdio_attach()
116 		sc->mdc_pin = (int)pin;  in gpiomdio_attach()
117 	if (OF_getencprop(node, "mdio", &pin, sizeof(pin)) > 0)  in gpiomdio_attach()
118 		sc->mdio_pin = (int)pin;  in gpiomdio_attach()
120 	if (sc->mdc_pin < 0 || sc->mdc_pin > 1)  in gpiomdio_attach()
121 		sc->mdc_pin = GPIOMDIO_MDC_DFLT;  in gpiomdio_attach()
122 	if (sc->mdio_pin < 0 || sc->mdio_pin > 1)  in gpiomdio_attach()
123 		sc->mdio_pin = GPIOMDIO_MDIO_DFLT;  in gpiomdio_attach()
126 	device_printf(dev, "MDC pin: %d, MDIO pin: %d\n",  in gpiomdio_attach()
127 	    devi->pins[sc->mdc_pin], devi->pins[sc->mdio_pin]);  in gpiomdio_attach()
135 	sc->miibb_ops.mbo_read = gpiomdio_bb_read;  in gpiomdio_attach()
136 	sc->miibb_ops.mbo_write = gpiomdio_bb_write;  in gpiomdio_attach()
148 	unsigned int val;  in gpiomdio_bb_read()  local
151 	GPIOBUS_PIN_GET(sc->sc_busdev, sc->sc_dev, sc->mdio_pin, &val);  in gpiomdio_bb_read()
153 	return (val != 0 ? MDI_BIT : 0);  in gpiomdio_bb_read()
157 gpiomdio_bb_write(device_t dev, uint32_t val)  in gpiomdio_bb_write()  argument
163 	/* Set the data pin state. */  in gpiomdio_bb_write()
164 	if ((val & (MDIRPHY_BIT | MDO_BIT)) == (MDIRPHY_BIT | MDO_BIT))  in gpiomdio_bb_write()
165 		GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, sc->mdio_pin, 1);  in gpiomdio_bb_write()
166 	else if ((val & (MDIRPHY_BIT | MDO_BIT)) == MDIRPHY_BIT)  in gpiomdio_bb_write()
167 		GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, sc->mdio_pin, 0);  in gpiomdio_bb_write()
168 	if (val & MDIRPHY_BIT)  in gpiomdio_bb_write()
169 		GPIOBUS_PIN_SETFLAGS(sc->sc_busdev, sc->sc_dev, sc->mdio_pin,  in gpiomdio_bb_write()
171 	else if (val & MDIRHOST_BIT)  in gpiomdio_bb_write()
172 		GPIOBUS_PIN_SETFLAGS(sc->sc_busdev, sc->sc_dev, sc->mdio_pin,  in gpiomdio_bb_write()
176 	if (val & MDC_BIT)  in gpiomdio_bb_write()
177 		GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, sc->mdc_pin, 1);  in gpiomdio_bb_write()
179 		GPIOBUS_PIN_SET(sc->sc_busdev, sc->sc_dev, sc->mdc_pin, 0);  in gpiomdio_bb_write()
180 	GPIOBUS_PIN_SETFLAGS(sc->sc_busdev, sc->sc_dev, sc->mdc_pin,  in gpiomdio_bb_write()
191 	return (mii_bitbang_readreg(dev, &sc->miibb_ops, phy, reg));  in gpiomdio_readreg()
195 gpiomdio_writereg(device_t dev, int phy, int reg, int val)  in gpiomdio_writereg()  argument
200 	mii_bitbang_writereg(dev, &sc->miibb_ops, phy, reg, val);  in gpiomdio_writereg()