| 1 | /* |
| 2 | * Copyright (c) 2017 Ian Sutton <ian@ce.gl> |
| 3 | * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org> |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | #include <sys/param.h> |
| 28 | #include <sys/systm.h> |
| 29 | #include <sys/device.h> |
| 30 | #include <sys/kernel.h> |
| 31 | |
| 32 | #include <dev/ofw/openfirm.h> |
| 33 | #include <dev/ofw/fdt.h> |
| 34 | |
| 35 | #include <machine/fdt.h> |
| 36 | |
| 37 | #include <armv7/omap/prcmvar.h> |
| 38 | #include <armv7/omap/sitara_cm.h> |
| 39 | |
| 40 | #include <arm/simplebus/simplebusvar.h> |
| 41 | |
| 42 | #define DEVNAME(_s) ((_s)->sc_dev.dv_xname) |
| 43 | |
| 44 | #define AMMUSB_DEBUG /* XXX */ |
| 45 | |
| 46 | #ifdef AMMUSB_DEBUG |
| 47 | int ammusb_debug = 20; |
| 48 | #define DPRINTF(n,s) do { if ((n) <= ammusb_debug) printf s; } while (0) |
| 49 | #else |
| 50 | #define DPRINTF(n,s) do {} |
| 51 | #endif |
| 52 | |
| 53 | #define HREAD4(sc, reg) \ |
| 54 | (bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg))) |
| 55 | #define HWRITE4(sc, reg, val) \ |
| 56 | bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) |
| 57 | #define HSET4(sc, reg, bits) \ |
| 58 | HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits)) |
| 59 | #define HCLR4(sc, reg, bits) \ |
| 60 | HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits)) |
| 61 | |
| 62 | struct ammusb_softc { |
| 63 | struct device sc_dev; |
| 64 | bus_space_tag_t sc_iot; |
| 65 | bus_space_handle_t sc_ioh; |
| 66 | void *sc_ih; |
| 67 | }; |
| 68 | |
| 69 | /* core decl */ |
| 70 | int ammusb_match(struct device *, void *, void *); |
| 71 | void ammusb_attach(struct device *, struct device *, void *); |
| 72 | int ammusb_detach(struct device *, int); |
| 73 | int ammusb_intr(void *); |
| 74 | void ammusb_reset(struct ammusb_softc *); |
| 75 | |
| 76 | /* debug decl */ |
| 77 | void ammusb_preg(uint32_t, char *, struct ammusb_softc *); |
| 78 | void ammusb_dumpregs(struct ammusb_softc *); |
| 79 | |
| 80 | /* core/iomux.c def */ |
| 81 | struct cfattach ammusb_ca = { |
| 82 | sizeof (struct ammusb_softc), ammusb_match, ammusb_attach, ammusb_detach |
| 83 | }; |
| 84 | |
| 85 | struct cfdriver ammusb_cd = { |
| 86 | NULL, "ammusb", DV_DULL |
| 87 | }; |
| 88 | |
| 89 | int |
| 90 | ammusb_match(struct device *parent, void *v, void *aux) |
| 91 | { |
| 92 | struct fdt_attach_args *faa = aux; |
| 93 | /* int node; |
| 94 | char name[32]; |
| 95 | |
| 96 | if (OF_is_compatible(faa->fa_node, "ti,am33xx-usb")) { |
| 97 | printf("!!HIT!!\n"); |
| 98 | for (node = OF_child(faa->fa_node); node; node = OF_peer(node)) { |
| 99 | |
| 100 | } |
| 101 | }*/ |
| 102 | printf("MAYBE: %d\n", faa->fa_node); |
| 103 | return OF_is_compatible(faa->fa_node, "ti,musb-am33xx"); |
| 104 | } |
| 105 | |
| 106 | void |
| 107 | ammusb_attach(struct device *parent, struct device *self, void *args) |
| 108 | { |
| 109 | struct ammusb_softc *sc = (struct ammusb_softc *) self; |
| 110 | struct fdt_attach_args *faa = args; |
| 111 | |
| 112 | uint32_t rev; |
| 113 | |
| 114 | sc->sc_iot = faa->fa_iot; |
| 115 | if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0, |
| 116 | &sc->sc_ioh)) |
| 117 | panic("%s: bus_space_map failed!", __func__); |
| 118 | |
| 119 | rev = HREAD4(sc, 0x0); |
| 120 | printf(" rev 0x%08x\n", rev); |
| 121 | printf("%s: phys: 0x%08llx, size: %08llx\n", DEVNAME(sc), faa->fa_reg[0].addr, |
| 122 | faa->fa_reg[0].size); |
| 123 | } |
| 124 | |
| 125 | int |
| 126 | ammusb_detach(struct device *self, int flags) |
| 127 | { |
| 128 | return 0; /* XXX */ |
| 129 | } |
| 130 | |
| 131 | int |
| 132 | ammusb_intr(void * arg) |
| 133 | { |
| 134 | return 0; /* XXX */ |
| 135 | } |