rkgrf.c revision 1.6
1/* $OpenBSD: rkgrf.c,v 1.6 2023/04/06 19:02:29 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#ifdef __armv7__ 31#include <arm/simplebus/simplebusvar.h> 32#else 33#include <arm64/dev/simplebusvar.h> 34#endif 35 36struct rkgrf_softc { 37 struct simplebus_softc sc_sbus; 38 bus_space_tag_t sc_iot; 39 bus_space_handle_t sc_ioh; 40}; 41 42int rkgrf_match(struct device *, void *, void *); 43void rkgrf_attach(struct device *, struct device *, void *); 44 45const struct cfattach rkgrf_ca = { 46 sizeof (struct rkgrf_softc), rkgrf_match, rkgrf_attach 47}; 48 49struct cfdriver rkgrf_cd = { 50 NULL, "rkgrf", DV_DULL 51}; 52 53int 54rkgrf_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 66void 67rkgrf_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 regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh, 86 faa->fa_reg[0].size); 87 88 /* Attach PHYs. */ 89 simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa); 90} 91