2 * Copyright (c) 2017 Ian Sutton <ian@ce.gl>
3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/param.h>
28 #include <sys/systm.h>
29 #include <sys/device.h>
30 #include <sys/kernel.h>
31 #include <sys/rwlock.h>
33 #include <machine/intr.h>
35 #include <dev/ofw/openfirm.h>
36 #include <dev/ofw/fdt.h>
37 #include <machine/fdt.h>
39 #include <dev/usb/usb.h>
40 #include <dev/usb/usbdi.h>
41 #include <dev/usb/usbdivar.h>
42 #include <dev/usb/usb_mem.h>
43 #include <dev/usb/ehcireg.h>
44 #include <dev/usb/ehcivar.h>
46 #include <armv7/omap/prcmvar.h>
47 #include <armv7/omap/sitara_cm.h>
49 #include <arm/simplebus/simplebusvar.h>
51 #define DEVNAME(_s) ((_s)->sc_dev.dv_xname)
53 #define AMMUSB_DEBUG /* XXX */
56 int ammusb_debug
= 20;
57 #define DPRINTF(n,s) do { if ((n) <= ammusb_debug) printf s; } while (0)
59 #define DPRINTF(n,s) do {}
62 #define HREAD4(sc, handle, reg) \
63 (bus_space_read_4((sc)->sc_iot, (handle), (reg)))
64 #define HWRITE4(sc, handle, reg, val) \
65 bus_space_write_4((sc)->sc_iot, (handle), (reg), (val))
66 #define HSET4(sc, handle, reg, bits) \
67 HWRITE4((sc), (handle), (reg), HREAD4((sc), (reg)) | (bits))
68 #define HCLR4(sc, handle, reg, bits) \
69 HWRITE4((sc), (handle), (reg), HREAD4((sc), (reg)) & ~(bits))
78 bus_space_tag_t sc_iot
;
81 bus_space_handle_t sc_ioh_ctl
;
82 bus_size_t sc_ios_ctl
;
83 bus_space_handle_t sc_ioh_core
;
84 bus_size_t sc_ios_core
;
85 bus_space_handle_t sc_ioh_phy
;
86 bus_size_t sc_ios_phy
;
89 enum OTG_STATE sc_otg_state
;
93 int ammusb_match(struct device
*, void *, void *);
94 void ammusb_attach(struct device
*, struct device
*, void *);
95 int ammusb_detach(struct device
*, int);
96 int ammusb_intr(void *);
97 void ammusb_reset(struct ammusb_softc
*);
100 void ammusb_preg(uint32_t, char *, struct ammusb_softc
*);
101 void ammusb_dumpregs(struct ammusb_softc
*);
103 /* core/iomux.c def */
104 struct cfattach ammusb_ca
= {
105 sizeof (struct ammusb_softc
), ammusb_match
, ammusb_attach
, ammusb_detach
108 struct cfdriver ammusb_cd
= {
109 NULL
, "ammusb", DV_DULL
113 ammusb_match(struct device
*parent
, void *v
, void *aux
)
115 struct fdt_attach_args
*faa
= aux
;
116 return OF_is_compatible(faa
->fa_node
, "ti,musb-am33xx");
120 ammusb_attach(struct device
*parent
, struct device
*self
, void *args
)
122 struct ammusb_softc
*sc
= (struct ammusb_softc
*) self
;
123 struct fdt_attach_args
*faa
= args
;
125 uint32_t rev
, phy_reg
[2];
130 sc
->sc_iot
= faa
->fa_iot
;
132 /* find our corresponding PHY regs */
133 if ((phy_node
= OF_getnodebyphandle(0x3c)) == -1) {
134 printf(": couldn't find PHY\n");
138 OF_getpropintarray(phy_node
, "reg", phy_reg
, sizeof(phy_reg
));
140 if (bus_space_map(sc
->sc_iot
, phy_reg
[0], phy_reg
[1], 0,
142 panic("%s: bus_space_map failed!", __func__
);
143 if (bus_space_map(sc
->sc_iot
, faa
->fa_reg
[0].addr
, faa
->fa_reg
[0].size
, 0,
145 panic("%s: bus_space_map failed!", __func__
);
146 if (bus_space_map(sc
->sc_iot
, faa
->fa_reg
[1].addr
, faa
->fa_reg
[1].size
, 0,
148 panic("%s: bus_space_map failed!", __func__
);
150 /* not the right revision number XXX */
151 rev
= HREAD4(sc
, sc
->sc_ioh_ctl
, 0x0);
152 printf(": rev %d.%d\n", rev
>> 4 &0xf, rev
& 0xf);
154 sc
->sc_ih
= arm_intr_establish_fdt(faa
->fa_node
, IPL_USB
, ehci_intr
,
155 &sc
->sc_dev
, DEVNAME(sc
));
157 /* XXX set OTG state here */
161 ammusb_detach(struct device
*self
, int flags
)
167 ammusb_intr(void * arg
)