1 /* $OpenBSD: rkgrf.c,v 1.7 2023/09/22 01:10:44 jsg 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 #include <machine/simplebusvar.h>
31
32 struct rkgrf_softc {
33 struct simplebus_softc sc_sbus;
34 bus_space_tag_t sc_iot;
35 bus_space_handle_t sc_ioh;
36 };
37
38 int rkgrf_match(struct device *, void *, void *);
39 void rkgrf_attach(struct device *, struct device *, void *);
40
41 const struct cfattach rkgrf_ca = {
42 sizeof (struct rkgrf_softc), rkgrf_match, rkgrf_attach
43 };
44
45 struct cfdriver rkgrf_cd = {
46 NULL, "rkgrf", DV_DULL
47 };
48
49 int
rkgrf_match(struct device * parent,void * match,void * aux)50 rkgrf_match(struct device *parent, void *match, void *aux)
51 {
52 struct fdt_attach_args *faa = aux;
53
54 return (OF_is_compatible(faa->fa_node, "rockchip,rk3288-grf") ||
55 OF_is_compatible(faa->fa_node, "rockchip,rk3288-pmu") ||
56 OF_is_compatible(faa->fa_node, "rockchip,rk3288-sgrf") ||
57 OF_is_compatible(faa->fa_node, "rockchip,rk3308-grf") ||
58 OF_is_compatible(faa->fa_node, "rockchip,rk3399-grf") ||
59 OF_is_compatible(faa->fa_node, "rockchip,rk3399-pmugrf"));
60 }
61
62 void
rkgrf_attach(struct device * parent,struct device * self,void * aux)63 rkgrf_attach(struct device *parent, struct device *self, void *aux)
64 {
65 struct rkgrf_softc *sc = (struct rkgrf_softc *)self;
66 struct fdt_attach_args *faa = aux;
67
68 if (faa->fa_nreg < 1) {
69 printf(": no registers\n");
70 return;
71 }
72
73 sc->sc_iot = faa->fa_iot;
74
75 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
76 faa->fa_reg[0].size, 0, &sc->sc_ioh)) {
77 printf(": can't map registers\n");
78 return;
79 }
80
81 regmap_register(faa->fa_node, sc->sc_iot, sc->sc_ioh,
82 faa->fa_reg[0].size);
83
84 /* Attach PHYs. */
85 simplebus_attach(parent, &sc->sc_sbus.sc_dev, faa);
86 }
87