84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/* $OpenBSD: sxisyscon.c,v 1.3 2024/02/07 22:00:38 uaa Exp $ */
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/*
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* Copyright (c) 2019 Mark Kettenis <kettenis@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_misc.h>
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#include <dev/ofw/fdt.h>
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struct sxisyscon_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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};
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int sxisyscon_match(struct device *, void *, void *);
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void sxisyscon_attach(struct device *, struct device *, void *);
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const struct cfattach sxisyscon_ca = {
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sizeof(struct sxisyscon_softc), sxisyscon_match, sxisyscon_attach
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};
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struct cfdriver sxisyscon_cd = {
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NULL, "sxisyscon", DV_DULL
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};
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int
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sxisyscon_match(struct device *parent, void *match, void *aux)
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{
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struct fdt_attach_args *faa = aux;
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int node = faa->fa_node;
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if (OF_is_compatible(node, "allwinner,sun8i-h3-system-control") ||
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OF_is_compatible(node, "allwinner,sun50i-a64-system-control") ||
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OF_is_compatible(node, "allwinner,sun50i-h5-system-control") ||
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OF_is_compatible(node, "allwinner,sun50i-h6-system-control") ||
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OF_is_compatible(node, "allwinner,sun50i-h616-system-control"))
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return 10; /* Must beat syscon(4). */
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return 0;
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}
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void
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sxisyscon_attach(struct device *parent, struct device *self, void *aux)
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{
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struct sxisyscon_softc *sc = (struct sxisyscon_softc *)self;
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struct fdt_attach_args *faa = aux;
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if (faa->fa_nreg < 1) {
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printf(": no registers\n");
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return;
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}
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sc->sc_iot = faa->fa_iot;
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if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
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faa->fa_reg[0].size, 0, &sc->sc_ioh)) {
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printf(": can't map registers\n");
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return;
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}
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regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh,
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faa->fa_reg[0].size);
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printf("\n");
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}
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