/* $OpenBSD: expower.c,v 1.11 2023/09/22 01:10:43 jsg Exp $ */ /* * Copyright (c) 2012-2013 Patrick Wildt * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #define HREAD4(sc, reg) \ (bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg))) #define HWRITE4(sc, reg, val) \ bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) #define HSET4(sc, reg, bits) \ HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits)) #define HCLR4(sc, reg, bits) \ HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits)) struct expower_softc { struct simplebus_softc sc_sbus; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; }; int expower_match(struct device *, void *, void *); void expower_attach(struct device *, struct device *, void *); const struct cfattach expower_ca = { sizeof (struct expower_softc), expower_match, expower_attach }; struct cfdriver expower_cd = { NULL, "expower", DV_DULL }; int expower_match(struct device *parent, void *match, void *aux) { struct fdt_attach_args *faa = aux; if (OF_is_compatible(faa->fa_node, "samsung,exynos5250-pmu") || OF_is_compatible(faa->fa_node, "samsung,exynos5420-pmu")) return 10; /* Must beat syscon(4). */ return 0; } void expower_attach(struct device *parent, struct device *self, void *aux) { struct expower_softc *sc = (struct expower_softc *)self; struct fdt_attach_args *faa = aux; if (faa->fa_nreg < 1) { printf(": no registers\n"); return; } sc->sc_iot = faa->fa_iot; if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0, &sc->sc_ioh)) { printf(": can't map registers\n"); return; } regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh, faa->fa_reg[0].size); simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa); }