1 /*-
40 #include <dev/syscon/syscon.h>
54 	device_t dev;  in am335x_scm_temp_sysctl()  local
59 	dev = (device_t)arg1;  in am335x_scm_temp_sysctl()
60 	sc = device_get_softc(dev);  in am335x_scm_temp_sysctl()
63 	for(i = 50; i > 0; i--) {  in am335x_scm_temp_sysctl()
64 		reg = SYSCON_READ_4(sc->syscon, SCM_BGAP_CTRL);  in am335x_scm_temp_sysctl()
70 		sc->sc_last_temp =  in am335x_scm_temp_sysctl()
72 		sc->sc_last_temp *= 10;  in am335x_scm_temp_sysctl()
74 	temp = sc->sc_last_temp + TZ_ZEROC;  in am335x_scm_temp_sysctl()
98 am335x_scm_probe(device_t dev)  in am335x_scm_probe()  argument
101 	if (strcmp(device_get_nameunit(dev), "am335x_scm0") != 0)  in am335x_scm_probe()
104 	device_set_desc(dev, "AM335x Control Module Extension");  in am335x_scm_probe()
110 am335x_scm_attach(device_t dev)  in am335x_scm_attach()  argument
119 	sc = device_get_softc(dev);  in am335x_scm_attach()
121 	/* FIXME: For now; Go and kidnap syscon from opp-table */  in am335x_scm_attach()
122 	opp_table = OF_finddevice("/opp-table");  in am335x_scm_attach()
123 	if (opp_table == -1) {  in am335x_scm_attach()
124 		device_printf(dev, "Cant find /opp-table\n");  in am335x_scm_attach()
128 		device_printf(dev, "/opp-table missing syscon property\n");  in am335x_scm_attach()
131 	err = syscon_get_by_ofw_property(dev, opp_table, "syscon", &sc->syscon);  in am335x_scm_attach()
133 		device_printf(dev, "Failed to get syscon\n");  in am335x_scm_attach()
138 	SYSCON_WRITE_4(sc->syscon, SCM_BGAP_CTRL, 0);  in am335x_scm_attach()
139 	reg = SYSCON_READ_4(sc->syscon, SCM_BGAP_CTRL);  in am335x_scm_attach()
142 	SYSCON_WRITE_4(sc->syscon, SCM_BGAP_CTRL, SCM_BGAP_CONTCONV);  in am335x_scm_attach()
143 	reg = SYSCON_READ_4(sc->syscon, SCM_BGAP_CTRL);  in am335x_scm_attach()
145 	/* Start the ADC conversion. */  in am335x_scm_attach()
147 	SYSCON_WRITE_4(sc->syscon, SCM_BGAP_CTRL, reg);  in am335x_scm_attach()
150         ctx = device_get_sysctl_ctx(dev);  in am335x_scm_attach()
151 	tree = SYSCTL_CHILDREN(device_get_sysctl_tree(dev));  in am335x_scm_attach()
152 	sc->sc_temp_oid = SYSCTL_ADD_PROC(ctx, tree, OID_AUTO,  in am335x_scm_attach()
154 	    dev, 0, am335x_scm_temp_sysctl, "IK", "Current temperature");  in am335x_scm_attach()
160 am335x_scm_detach(device_t dev)  in am335x_scm_detach()  argument
164 	sc = device_get_softc(dev);  in am335x_scm_detach()
167 	if (sc->sc_temp_oid != NULL)  in am335x_scm_detach()
168 		sysctl_remove_oid(sc->sc_temp_oid, 1, 0);  in am335x_scm_detach()
170 	/* Stop the bandgap ADC. */  in am335x_scm_detach()
171 	SYSCON_WRITE_4(sc->syscon, SCM_BGAP_CTRL, SCM_BGAP_BGOFF);  in am335x_scm_detach()