1 /* $OpenBSD: rkgrf.c,v 1.7 2023/09/22 01:10:44 jsg Exp $ */ 2 /* 3 * Copyright (c) 2017 Mark Kettenis <kettenis@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 22 #include <machine/intr.h> 23 #include <machine/bus.h> 24 #include <machine/fdt.h> 25 26 #include <dev/ofw/openfirm.h> 27 #include <dev/ofw/ofw_misc.h> 28 #include <dev/ofw/fdt.h> 29 30 #include <machine/simplebusvar.h> 31 32 struct rkgrf_softc { 33 struct simplebus_softc sc_sbus; 34 bus_space_tag_t sc_iot; 35 bus_space_handle_t sc_ioh; 36 }; 37 38 int rkgrf_match(struct device *, void *, void *); 39 void rkgrf_attach(struct device *, struct device *, void *); 40 41 const struct cfattach rkgrf_ca = { 42 sizeof (struct rkgrf_softc), rkgrf_match, rkgrf_attach 43 }; 44 45 struct cfdriver rkgrf_cd = { 46 NULL, "rkgrf", DV_DULL 47 }; 48 49 int 50 rkgrf_match(struct device *parent, void *match, void *aux) 51 { 52 struct fdt_attach_args *faa = aux; 53 54 return (OF_is_compatible(faa->fa_node, "rockchip,rk3288-grf") || 55 OF_is_compatible(faa->fa_node, "rockchip,rk3288-pmu") || 56 OF_is_compatible(faa->fa_node, "rockchip,rk3288-sgrf") || 57 OF_is_compatible(faa->fa_node, "rockchip,rk3308-grf") || 58 OF_is_compatible(faa->fa_node, "rockchip,rk3399-grf") || 59 OF_is_compatible(faa->fa_node, "rockchip,rk3399-pmugrf")); 60 } 61 62 void 63 rkgrf_attach(struct device *parent, struct device *self, void *aux) 64 { 65 struct rkgrf_softc *sc = (struct rkgrf_softc *)self; 66 struct fdt_attach_args *faa = aux; 67 68 if (faa->fa_nreg < 1) { 69 printf(": no registers\n"); 70 return; 71 } 72 73 sc->sc_iot = faa->fa_iot; 74 75 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, 76 faa->fa_reg[0].size, 0, &sc->sc_ioh)) { 77 printf(": can't map registers\n"); 78 return; 79 } 80 81 regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh, 82 faa->fa_reg[0].size); 83 84 /* Attach PHYs. */ 85 simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa); 86 } 87