1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
33 #include <sys/bus.h>
48 	uint8_t	addr;  member
52  * Autoconfiguration and support routines for System Management bus
59 	device_set_desc(dev, "System Management Bus");  in smbus_probe()
69 	mtx_init(&sc->lock, device_get_nameunit(dev), "smbus", MTX_DEF);  in smbus_attach()
86 	mtx_destroy(&sc->lock);  in smbus_detach()
121 smbus_hinted_child(device_t bus, const char *dname, int dunit)  in smbus_hinted_child()  argument
125 	int addr;  in smbus_hinted_child()  local
127 	addr = 0;  in smbus_hinted_child()
128 	resource_int_value(dname, dunit, "addr", &addr);  in smbus_hinted_child()
129 	if (addr > UINT8_MAX) {  in smbus_hinted_child()
130 		device_printf(bus, "ignored incorrect slave address hint 0x%x"  in smbus_hinted_child()
131 		    " for %s%d\n", addr, dname, dunit);  in smbus_hinted_child()
134 	child = BUS_ADD_CHILD(bus, SMBUS_ORDER_HINTED, dname, dunit);  in smbus_hinted_child()
138 	devi->addr = addr;  in smbus_hinted_child()
147 	if (devi->addr != 0)  in smbus_child_location()
148 		sbuf_printf(sb, "addr=0x%x", devi->addr);  in smbus_child_location()
160 	if (devi->addr != 0)  in smbus_print_child()
161 		retval += printf(" at addr 0x%x", devi->addr);  in smbus_print_child()
175 		if (devi->addr != 0)  in smbus_read_ivar()
176 			*result = devi->addr;  in smbus_read_ivar()
178 			*result = -1;  in smbus_read_ivar()
195 		if (devi->addr != 0)  in smbus_write_ivar()
197 		devi->addr = value;  in smbus_write_ivar()
206 smbus_probe_nomatch(device_t bus, device_t child)  in smbus_probe_nomatch()  argument
211 	 * Ignore (self-identified) devices without a slave address set.  in smbus_probe_nomatch()
214 	if (devi->addr != 0)  in smbus_probe_nomatch()
215 		device_printf(bus, "<unknown device> at addr %#x\n",  in smbus_probe_nomatch()
216 		    devi->addr);  in smbus_probe_nomatch()
228 	/* bus interface */