1 /* $OpenBSD: rkgrf.c,v 1.2 2017/07/23 17:07:18 kettenis 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 struct rkgrf_softc { 31 struct device sc_dev; 32 bus_space_tag_t sc_iot; 33 bus_space_handle_t sc_ioh; 34 }; 35 36 int rkgrf_match(struct device *, void *, void *); 37 void rkgrf_attach(struct device *, struct device *, void *); 38 39 struct cfattach rkgrf_ca = { 40 sizeof (struct rkgrf_softc), rkgrf_match, rkgrf_attach 41 }; 42 43 struct cfdriver rkgrf_cd = { 44 NULL, "rkgrf", DV_DULL 45 }; 46 47 int 48 rkgrf_match(struct device *parent, void *match, void *aux) 49 { 50 struct fdt_attach_args *faa = aux; 51 52 return (OF_is_compatible(faa->fa_node, "rockchip,rk3288-grf") || 53 OF_is_compatible(faa->fa_node, "rockchip,rk3288-pmu") || 54 OF_is_compatible(faa->fa_node, "rockchip,rk3288-sgrf") || 55 OF_is_compatible(faa->fa_node, "rockchip,rk3399-grf") || 56 OF_is_compatible(faa->fa_node, "rockchip,rk3399-pmugrf")); 57 } 58 59 void 60 rkgrf_attach(struct device *parent, struct device *self, void *aux) 61 { 62 struct rkgrf_softc *sc = (struct rkgrf_softc *)self; 63 struct fdt_attach_args *faa = aux; 64 65 if (faa->fa_nreg < 1) { 66 printf(": no registers\n"); 67 return; 68 } 69 70 sc->sc_iot = faa->fa_iot; 71 72 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, 73 faa->fa_reg[0].size, 0, &sc->sc_ioh)) { 74 printf(": can't map registers\n"); 75 return; 76 } 77 78 printf("\n"); 79 80 regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh, 81 faa->fa_reg[0].size); 82 } 83