1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
34 #include <sys/bus.h>
42 #include <dev/spibus/spi.h>
60 static const struct ofw_bus_devinfo *ofw_spibus_get_devinfo(device_t bus,
67 	if (ofw_bus_get_node(dev) == -1)  in ofw_spibus_probe()
69 	device_set_desc(dev, "OFW SPI bus");  in ofw_spibus_probe()
84 	sc->dev = dev;  in ofw_spibus_attach()
95 		 * Try to get the CS number first from the spi-chipselect  in ofw_spibus_attach()
98 		if (OF_getencprop(child, "spi-chipselect", &paddr,  in ofw_spibus_attach()
99 		    sizeof(paddr)) == -1) {  in ofw_spibus_attach()
101 			    sizeof(paddr)) == -1)  in ofw_spibus_attach()
108 		if (OF_hasprop(child, "spi-cpol"))  in ofw_spibus_attach()
110 		if (OF_hasprop(child, "spi-cpha")) {  in ofw_spibus_attach()
120 		if (OF_hasprop(child, "spi-cs-high"))  in ofw_spibus_attach()
125 		 * use the default bus speed.  in ofw_spibus_attach()
127 		 * XXX Note that the current (2018-04-07) dts bindings say that  in ofw_spibus_attach()
128 		 * spi-max-frequency is a required property (but says nothing of  in ofw_spibus_attach()
131 		if (OF_getencprop(child, "spi-max-frequency", &clock,  in ofw_spibus_attach()
132 		    sizeof(clock)) == -1)  in ofw_spibus_attach()
136 		 * Now set up the SPI and OFW bus layer devinfo and add it  in ofw_spibus_attach()
137 		 * to the bus.  in ofw_spibus_attach()
143 		dinfo->opd_dinfo.cs = paddr;  in ofw_spibus_attach()
144 		dinfo->opd_dinfo.clock = clock;  in ofw_spibus_attach()
145 		dinfo->opd_dinfo.mode = mode;  in ofw_spibus_attach()
146 		if (ofw_bus_gen_setup_devinfo(&dinfo->opd_obdinfo, child) !=  in ofw_spibus_attach()
153 		resource_list_init(&dinfo->opd_dinfo.rl);  in ofw_spibus_attach()
155 		    &dinfo->opd_dinfo.rl, NULL);  in ofw_spibus_attach()
180 	 * NULL all the OFW-related parts of the ivars for non-OFW  in ofw_spibus_add_child()
183 	devi->opd_obdinfo.obd_node = -1;  in ofw_spibus_add_child()
184 	devi->opd_obdinfo.obd_name = NULL;  in ofw_spibus_add_child()
185 	devi->opd_obdinfo.obd_compat = NULL;  in ofw_spibus_add_child()
186 	devi->opd_obdinfo.obd_type = NULL;  in ofw_spibus_add_child()
187 	devi->opd_obdinfo.obd_model = NULL;  in ofw_spibus_add_child()
201 ofw_spibus_get_devinfo(device_t bus, device_t dev)  in ofw_spibus_get_devinfo()  argument
206 	return (&dinfo->opd_obdinfo);  in ofw_spibus_get_devinfo()
210 ofw_spibus_get_resource_list(device_t bus __unused, device_t child)  in ofw_spibus_get_resource_list()
215 	return (&devi->rl);  in ofw_spibus_get_resource_list()
223 	/* Bus interface */
242 DRIVER_MODULE(ofw_spibus, spi, ofw_spibus_driver, 0, 0);