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/* $OpenBSD: sxisyscon.c,v 1.2 2021/10/24 17:52:27 mpi Exp $ */
/*
* Copyright (c) 2019 Mark Kettenis <kettenis@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_misc.h>
#include <dev/ofw/fdt.h>
struct sxisyscon_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
};
int sxisyscon_match(struct device *, void *, void *);
void sxisyscon_attach(struct device *, struct device *, void *);
const struct cfattach sxisyscon_ca = {
sizeof(struct sxisyscon_softc), sxisyscon_match, sxisyscon_attach
};
struct cfdriver sxisyscon_cd = {
NULL, "sxisyscon", DV_DULL
};
int
sxisyscon_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
int node = faa->fa_node;
if (OF_is_compatible(node, "allwinner,sun8i-h3-system-control") ||
OF_is_compatible(node, "allwinner,sun50i-a64-system-control") ||
OF_is_compatible(node, "allwinner,sun50i-h5-system-control") ||
OF_is_compatible(node, "allwinner,sun50i-h6-system-control"))
return 10; /* Must beat syscon(4). */
return 0;
}
void
sxisyscon_attach(struct device *parent, struct device *self, void *aux)
{
struct sxisyscon_softc *sc = (struct sxisyscon_softc *)self;
struct fdt_attach_args *faa = aux;
if (faa->fa_nreg < 1) {
printf(": no registers\n");
return;
}
sc->sc_iot = faa->fa_iot;
if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
faa->fa_reg[0].size, 0, &sc->sc_ioh)) {
printf(": can't map registers\n");
return;
}
regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh,
faa->fa_reg[0].size);
printf("\n");
}
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