dev/pcf/pcf_ebus.c

75 #include <dev/ofw/ofw_bus.h>
76 #include <dev/ofw/openfirm.h>
83 #include <dev/iicbus/iiconf.h>
84 #include <dev/pcf/pcfvar.h>
119 pcf_ebus_probe(device_t dev)
128 	if (strcmp("i2c", ofw_bus_get_name(dev)) == 0) {
129 		compat = ofw_bus_get_compat(dev);
131 			device_set_desc(dev, "PCF8584 I2C bus controller");
139 pcf_ebus_attach(device_t dev)
146 	sc = DEVTOSOFTC(dev);
147 	mtx_init(&sc->pcf_lock, device_get_nameunit(dev), "pcf", MTX_DEF);
150 	if ((node = ofw_bus_get_node(dev)) == -1) {
151 		device_printf(dev, "cannot get OFW node\n");
156 	sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
159 		device_printf(dev, "cannot reserve I/O port range\n");
163 	sc->pcf_flags = device_get_flags(dev);
169 		sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
172 			device_printf(dev, "can't reserve irq, polled mode.\n");
185 		device_printf(dev, "cannot get own address\n");
189 		device_printf(dev, "PCF8584 address: 0x%08llx\n", (unsigned
193 	pcf_rst_card(dev, IIC_FASTEST, own_addr, NULL);
196 		rv = bus_setup_intr(dev, sc->res_irq,
200 			device_printf(dev, "could not setup IRQ\n");
205 	if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
206 		device_printf(dev, "could not allocate iicbus instance\n");
209 	bus_generic_attach(dev);
215 		bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
219 		bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport,
227 pcf_ebus_detach(device_t dev)
232 	sc = DEVTOSOFTC(dev);
234 	if ((rv = bus_generic_detach(dev)) != 0)
237 	if ((rv = device_delete_child(dev, sc->iicbus)) != 0)
241 		bus_teardown_intr(dev, sc->res_irq,
243 		bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
247 	bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport,