1 /* $OpenBSD: rkgrf.c,v 1.5 2021/10/24 17:52:26 mpi 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 #ifdef __armv7__ 31 #include <arm/simplebus/simplebusvar.h> 32 #else 33 #include <arm64/dev/simplebusvar.h> 34 #endif 35 36 struct rkgrf_softc { 37 struct simplebus_softc sc_sbus; 38 bus_space_tag_t sc_iot; 39 bus_space_handle_t sc_ioh; 40 }; 41 42 int rkgrf_match(struct device *, void *, void *); 43 void rkgrf_attach(struct device *, struct device *, void *); 44 45 const struct cfattach rkgrf_ca = { 46 sizeof (struct rkgrf_softc), rkgrf_match, rkgrf_attach 47 }; 48 49 struct cfdriver rkgrf_cd = { 50 NULL, "rkgrf", DV_DULL 51 }; 52 53 int 54 rkgrf_match(struct device *parent, void *match, void *aux) 55 { 56 struct fdt_attach_args *faa = aux; 57 58 return (OF_is_compatible(faa->fa_node, "rockchip,rk3288-grf") || 59 OF_is_compatible(faa->fa_node, "rockchip,rk3288-pmu") || 60 OF_is_compatible(faa->fa_node, "rockchip,rk3288-sgrf") || 61 OF_is_compatible(faa->fa_node, "rockchip,rk3308-grf") || 62 OF_is_compatible(faa->fa_node, "rockchip,rk3399-grf") || 63 OF_is_compatible(faa->fa_node, "rockchip,rk3399-pmugrf")); 64 } 65 66 void 67 rkgrf_attach(struct device *parent, struct device *self, void *aux) 68 { 69 struct rkgrf_softc *sc = (struct rkgrf_softc *)self; 70 struct fdt_attach_args *faa = aux; 71 72 if (faa->fa_nreg < 1) { 73 printf(": no registers\n"); 74 return; 75 } 76 77 sc->sc_iot = faa->fa_iot; 78 79 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, 80 faa->fa_reg[0].size, 0, &sc->sc_ioh)) { 81 printf(": can't map registers\n"); 82 return; 83 } 84 85 printf("\n"); 86 87 regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh, 88 faa->fa_reg[0].size); 89 90 /* Attach PHYs. */ 91 simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa); 92 } 93