1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
71 	rv = ofw_bus_parse_xref_list_alloc(cnode, prop_name, "#gpio-cells",  in gpio_pin_get_by_ofw_propidx()
109 gpio_pin_get_by_ofw_idx(device_t consumer, phandle_t node,  in gpio_pin_get_by_ofw_idx()  argument
113 	return (gpio_pin_get_by_ofw_propidx(consumer, node, "gpios", idx, pin));  in gpio_pin_get_by_ofw_idx()
117 gpio_pin_get_by_ofw_property(device_t consumer, phandle_t node,  in gpio_pin_get_by_ofw_property()  argument
121 	return (gpio_pin_get_by_ofw_propidx(consumer, node, name, 0, pin));  in gpio_pin_get_by_ofw_property()
125 gpio_pin_get_by_ofw_name(device_t consumer, phandle_t node,  in gpio_pin_get_by_ofw_name()  argument
130 	KASSERT(consumer != NULL && node > 0,  in gpio_pin_get_by_ofw_name()
131 	    ("both consumer and node required"));  in gpio_pin_get_by_ofw_name()
133 	rv = ofw_bus_find_string_index(node, "gpio-names", name, &idx);  in gpio_pin_get_by_ofw_name()
136 	return (gpio_pin_get_by_ofw_idx(consumer, node, idx, pin));  in gpio_pin_get_by_ofw_name()
143 ofw_gpiobus_add_fdt_child(device_t bus, const char *drvname, phandle_t child)  in ofw_gpiobus_add_fdt_child()  argument
151 	 * Check to see if we already have a child for @p child, and if so  in ofw_gpiobus_add_fdt_child()
154 	childdev = ofw_bus_find_child_device_by_phandle(bus, child);  in ofw_gpiobus_add_fdt_child()
159 	 * Set up the GPIO child and OFW bus layer devinfo and add it to bus.  in ofw_gpiobus_add_fdt_child()
164 	dinfo = ofw_gpiobus_setup_devinfo(bus, childdev, child);  in ofw_gpiobus_add_fdt_child()
174 	/* Use the child name as pin name. */  in ofw_gpiobus_add_fdt_child()
175 	devi = &dinfo->opd_dinfo;  in ofw_gpiobus_add_fdt_child()
176 	for (i = 0; i < devi->npins; i++)  in ofw_gpiobus_add_fdt_child()
177 		GPIOBUS_PIN_SETNAME(bus, devi->pins[i],  in ofw_gpiobus_add_fdt_child()
195 	phandle_t node;  in ofw_gpiobus_register_provider()  local
197 	node = ofw_bus_get_node(provider);  in ofw_gpiobus_register_provider()
198 	if (node != -1)  in ofw_gpiobus_register_provider()
199 		OF_device_register_xref(OF_xref_from_node(node), provider);  in ofw_gpiobus_register_provider()
205 	phandle_t node;  in ofw_gpiobus_unregister_provider()  local
207 	node = ofw_bus_get_node(provider);  in ofw_gpiobus_unregister_provider()
208 	if (node != -1)  in ofw_gpiobus_unregister_provider()
209 		OF_device_register_xref(OF_xref_from_node(node), NULL);  in ofw_gpiobus_unregister_provider()
213 ofw_gpiobus_setup_devinfo(device_t bus, device_t child, phandle_t node)  in ofw_gpiobus_setup_devinfo()  argument
225 	if (ofw_bus_gen_setup_devinfo(&dinfo->opd_obdinfo, node) != 0) {  in ofw_gpiobus_setup_devinfo()
229 	/* Parse the gpios property for the child. */  in ofw_gpiobus_setup_devinfo()
230 	npins = ofw_gpiobus_parse_gpios_impl(child, node, "gpios", sc, &pins);  in ofw_gpiobus_setup_devinfo()
232 		ofw_bus_gen_destroy_devinfo(&dinfo->opd_obdinfo);  in ofw_gpiobus_setup_devinfo()
237 	resource_list_init(&dinfo->opd_dinfo.rl);  in ofw_gpiobus_setup_devinfo()
238 	/* Allocate the child ivars and copy the parsed pin data. */  in ofw_gpiobus_setup_devinfo()
239 	devi = &dinfo->opd_dinfo;  in ofw_gpiobus_setup_devinfo()
240 	devi->npins = (uint32_t)npins;  in ofw_gpiobus_setup_devinfo()
246 	for (i = 0; i < devi->npins; i++)  in ofw_gpiobus_setup_devinfo()
247 		devi->pins[i] = pins[i].pin;  in ofw_gpiobus_setup_devinfo()
250 	if (ofw_bus_intr_to_rl(bus, node, &dinfo->opd_dinfo.rl, NULL) != 0) {  in ofw_gpiobus_setup_devinfo()
254 	device_set_ivars(child, dinfo);  in ofw_gpiobus_setup_devinfo()
267 	devi = &dinfo->opd_dinfo;  in ofw_gpiobus_destroy_devinfo()
268 	for (i = 0; i < devi->npins; i++) {  in ofw_gpiobus_destroy_devinfo()
269 		if (devi->pins[i] > sc->sc_npins)  in ofw_gpiobus_destroy_devinfo()
271 		sc->sc_pins[devi->pins[i]].mapped = 0;  in ofw_gpiobus_destroy_devinfo()
274 	resource_list_free(&dinfo->opd_dinfo.rl);  in ofw_gpiobus_destroy_devinfo()
275 	ofw_bus_gen_destroy_devinfo(&dinfo->opd_obdinfo);  in ofw_gpiobus_destroy_devinfo()
289 	if (ncells == -1) {  in ofw_gpiobus_parse_gpios_impl()
293 		return (-1);  in ofw_gpiobus_parse_gpios_impl()
296 	 * The gpio-specifier is controller independent, the first pcell has  in ofw_gpiobus_parse_gpios_impl()
298 	 * Count the number of encoded gpio-specifiers on the first pass.  in ofw_gpiobus_parse_gpios_impl()
312 			if (ofw_bus_get_node(bussc->sc_dev) != gpio)  in ofw_gpiobus_parse_gpios_impl()
315 		 * Check for gpio-controller property and read the #gpio-cells  in ofw_gpiobus_parse_gpios_impl()
318 		if (!OF_hasprop(gpio, "gpio-controller") ||  in ofw_gpiobus_parse_gpios_impl()
319 		    OF_getencprop(gpio, "#gpio-cells", &gpiocells,  in ofw_gpiobus_parse_gpios_impl()
322 			    "gpio reference is not a gpio-controller.\n");  in ofw_gpiobus_parse_gpios_impl()
324 			return (-1);  in ofw_gpiobus_parse_gpios_impl()
326 		if (ncells - i < gpiocells + 1) {  in ofw_gpiobus_parse_gpios_impl()
328 			    "%s cells doesn't match #gpio-cells.\n", pname);  in ofw_gpiobus_parse_gpios_impl()
329 			return (-1);  in ofw_gpiobus_parse_gpios_impl()
345 		return (-1);  in ofw_gpiobus_parse_gpios_impl()
358 		/* Read gpio-cells property for this GPIO controller. */  in ofw_gpiobus_parse_gpios_impl()
359 		if (OF_getencprop(gpio, "#gpio-cells", &gpiocells,  in ofw_gpiobus_parse_gpios_impl()
362 			    "gpio does not have the #gpio-cells property.\n");  in ofw_gpiobus_parse_gpios_impl()
375 		 * the child is probed and attached.  in ofw_gpiobus_parse_gpios_impl()
394 		if (gpiobus_acquire_pin(bussc->sc_busdev, (*pins)[j].pin) != 0)  in ofw_gpiobus_parse_gpios_impl()
406 	return (-1);  in ofw_gpiobus_parse_gpios_impl()
413 	if (ofw_bus_get_node(dev) == -1)  in ofw_gpiobus_probe()
424 	phandle_t child;  in ofw_gpiobus_attach()  local
434 	for (child = OF_child(ofw_bus_get_node(dev)); child != 0;  in ofw_gpiobus_attach()
435 	    child = OF_peer(child)) {  in ofw_gpiobus_attach()
436 		if (OF_hasprop(child, "gpio-hog"))  in ofw_gpiobus_attach()
438 		if (!OF_hasprop(child, "gpios"))  in ofw_gpiobus_attach()
440 		if (ofw_gpiobus_add_fdt_child(dev, NULL, child) == NULL)  in ofw_gpiobus_attach()
451 	device_t child;  in ofw_gpiobus_add_child()  local
454 	child = device_add_child_ordered(dev, order, name, unit);  in ofw_gpiobus_add_child()
455 	if (child == NULL)  in ofw_gpiobus_add_child()
456 		return (child);  in ofw_gpiobus_add_child()
460 		device_delete_child(dev, child);  in ofw_gpiobus_add_child()
465 	 * NULL all the OFW-related parts of the ivars for non-OFW  in ofw_gpiobus_add_child()
468 	devi->opd_obdinfo.obd_node = -1;  in ofw_gpiobus_add_child()
469 	devi->opd_obdinfo.obd_name = NULL;  in ofw_gpiobus_add_child()
470 	devi->opd_obdinfo.obd_compat = NULL;  in ofw_gpiobus_add_child()
471 	devi->opd_obdinfo.obd_type = NULL;  in ofw_gpiobus_add_child()
472 	devi->opd_obdinfo.obd_model = NULL;  in ofw_gpiobus_add_child()
474 	device_set_ivars(child, devi);  in ofw_gpiobus_add_child()
476 	return (child);  in ofw_gpiobus_add_child()
486 	return (&dinfo->opd_obdinfo);  in ofw_gpiobus_get_devinfo()