1 /*-
2  * Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
58 	struct gpioregulator_state	*states;  member
84 	if (sc->def->enable_pin_valid == 1) {  in gpioregulator_regnode_init()
85 		error = gpio_pin_setflags(sc->def->enable_pin, GPIO_PIN_OUTPUT);  in gpioregulator_regnode_init()
90 	for (n = 0; n < sc->def->npins; n++) {  in gpioregulator_regnode_init()
91 		error = gpio_pin_setflags(sc->def->pins[n], GPIO_PIN_OUTPUT);  in gpioregulator_regnode_init()
108 	if (sc->def->enable_pin_valid == 1) {  in gpioregulator_regnode_enable()
110 		if (!sc->param->enable_active_high)  in gpioregulator_regnode_enable()
112 		error = gpio_pin_set_active(sc->def->enable_pin, active);  in gpioregulator_regnode_enable()
117 	*udelay = sc->def->startup_delay_us;  in gpioregulator_regnode_enable()
133 	for (n = 0; n < sc->def->nstates; n++) {  in gpioregulator_regnode_set_voltage()
134 		if (sc->def->states[n].val >= min_uvolt &&  in gpioregulator_regnode_set_voltage()
135 		    sc->def->states[n].val <= max_uvolt) {  in gpioregulator_regnode_set_voltage()
136 			state = &sc->def->states[n];  in gpioregulator_regnode_set_voltage()
143 	for (n = 0; n < sc->def->npins; n++) {  in gpioregulator_regnode_set_voltage()
144 		error = gpio_pin_set_active(sc->def->pins[n],  in gpioregulator_regnode_set_voltage()
145 		    (state->mask >> n) & 1);  in gpioregulator_regnode_set_voltage()
150 	*udelay = sc->def->startup_delay_us;  in gpioregulator_regnode_set_voltage()
166 	for (n = 0; n < sc->def->npins; n++) {  in gpioregulator_regnode_get_voltage()
167 		error = gpio_pin_is_active(sc->def->pins[n], &active);  in gpioregulator_regnode_get_voltage()
173 	for (n = 0; n < sc->def->nstates; n++) {  in gpioregulator_regnode_get_voltage()
174 		if (sc->def->states[n].mask == mask) {  in gpioregulator_regnode_get_voltage()
175 			*uvolt = sc->def->states[n].val;  in gpioregulator_regnode_get_voltage()
203 	node = ofw_bus_get_node(sc->dev);  in gpioregulator_parse_fdt()
207 	error = regulator_parse_ofw_stdparam(sc->dev, node,  in gpioregulator_parse_fdt()
208 	    &sc->init_def.reg_init_def);  in gpioregulator_parse_fdt()
212 	/* "states" property (required) */  in gpioregulator_parse_fdt()
213 	len = OF_getencprop_alloc_multi(node, "states", sizeof(*pstates),  in gpioregulator_parse_fdt()
216 		device_printf(sc->dev, "invalid 'states' property\n");  in gpioregulator_parse_fdt()
220 	sc->init_def.nstates = len / 2;  in gpioregulator_parse_fdt()
221 	sc->init_def.states = malloc(sc->init_def.nstates *  in gpioregulator_parse_fdt()
222 	    sizeof(*sc->init_def.states), M_DEVBUF, M_WAITOK);  in gpioregulator_parse_fdt()
223 	for (n = 0; n < sc->init_def.nstates; n++) {  in gpioregulator_parse_fdt()
224 		sc->init_def.states[n].val = pstates[n * 2 + 0];  in gpioregulator_parse_fdt()
225 		sc->init_def.states[n].mask = pstates[n * 2 + 1];  in gpioregulator_parse_fdt()
226 		mask |= sc->init_def.states[n].mask;  in gpioregulator_parse_fdt()
229 	/* "startup-delay-us" property (optional) */  in gpioregulator_parse_fdt()
230 	len = OF_getencprop(node, "startup-delay-us",  in gpioregulator_parse_fdt()
231 	    &sc->init_def.startup_delay_us,  in gpioregulator_parse_fdt()
232 	    sizeof(sc->init_def.startup_delay_us));  in gpioregulator_parse_fdt()
234 		sc->init_def.startup_delay_us = 0;  in gpioregulator_parse_fdt()
236 	/* "enable-gpio" property (optional) */  in gpioregulator_parse_fdt()
237 	error = gpio_pin_get_by_ofw_property(sc->dev, node, "enable-gpio",  in gpioregulator_parse_fdt()
238 	    &sc->init_def.enable_pin);  in gpioregulator_parse_fdt()
240 		sc->init_def.enable_pin_valid = 1;  in gpioregulator_parse_fdt()
243 	sc->init_def.npins = 32 - __builtin_clz(mask);  in gpioregulator_parse_fdt()
244 	sc->init_def.pins = malloc(sc->init_def.npins *  in gpioregulator_parse_fdt()
245 	    sizeof(sc->init_def.pins), M_DEVBUF, M_WAITOK | M_ZERO);  in gpioregulator_parse_fdt()
246 	for (n = 0; n < sc->init_def.npins; n++) {  in gpioregulator_parse_fdt()
247 		error = gpio_pin_get_by_ofw_idx(sc->dev, node, n,  in gpioregulator_parse_fdt()
248 		    &sc->init_def.pins[n]);  in gpioregulator_parse_fdt()
250 			device_printf(sc->dev, "cannot get pin %d\n", n);  in gpioregulator_parse_fdt()
257 		for (n = 0; n < sc->init_def.npins; n++) {  in gpioregulator_parse_fdt()
258 			if (sc->init_def.pins[n] != NULL)  in gpioregulator_parse_fdt()
259 				gpio_pin_release(sc->init_def.pins[n]);  in gpioregulator_parse_fdt()
262 		free(sc->init_def.states, M_DEVBUF);  in gpioregulator_parse_fdt()
263 		free(sc->init_def.pins, M_DEVBUF);  in gpioregulator_parse_fdt()
275 	if (!ofw_bus_is_compatible(dev, "regulator-gpio"))  in gpioregulator_probe()
291 	sc->dev = dev;  in gpioregulator_attach()
299 	sc->init_def.reg_init_def.id = 1;  in gpioregulator_attach()
300 	sc->init_def.reg_init_def.ofw_node = node;  in gpioregulator_attach()
303 	    &sc->init_def.reg_init_def);  in gpioregulator_attach()
309 	sc->reg_sc = regnode_get_softc(regnode);  in gpioregulator_attach()
310 	sc->reg_sc->regnode = regnode;  in gpioregulator_attach()
311 	sc->reg_sc->base_dev = dev;  in gpioregulator_attach()
312 	sc->reg_sc->param = regnode_get_stdparam(regnode);  in gpioregulator_attach()
313 	sc->reg_sc->def = &sc->init_def;  in gpioregulator_attach()