1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/* $OpenBSD: mvpinctrl.c,v 1.4 2018/03/21 09:17:21 kettenis Exp $ */
/*
* Copyright (c) 2013,2016 Patrick Wildt <patrick@blueri.se>
* Copyright (c) 2016 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 <sys/malloc.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_misc.h>
#include <dev/ofw/ofw_pinctrl.h>
#include <dev/ofw/fdt.h>
#define HREAD4(sc, reg) \
(regmap_read_4((sc)->sc_rm, (reg)))
#define HWRITE4(sc, reg, val) \
regmap_write_4((sc)->sc_rm, (reg), (val))
struct mvpinctrl_pin {
char *pin;
char *function;
int value;
int pid;
};
struct mvpinctrl_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct regmap *sc_rm;
struct mvpinctrl_pin *sc_pins;
int sc_npins;
};
int mvpinctrl_match(struct device *, void *, void *);
void mvpinctrl_attach(struct device *, struct device *, void *);
int mvpinctrl_pinctrl(uint32_t, void *);
struct cfattach mvpinctrl_ca = {
sizeof (struct mvpinctrl_softc), mvpinctrl_match, mvpinctrl_attach
};
struct cfdriver mvpinctrl_cd = {
NULL, "mvpinctrl", DV_DULL
};
#define STR_HELPER(x) #x
#define STR(x) STR_HELPER(x)
#define MPP(id, func, val) { STR(mpp ## id), func, val, id }
#include "mvpinctrl_pins.h"
struct mvpinctrl_pins {
const char *compat;
struct mvpinctrl_pin *pins;
int npins;
};
struct mvpinctrl_pins mvpinctrl_pins[] = {
{
"marvell,mv88f6810-pinctrl",
armada_38x_pins, nitems(armada_38x_pins)
},
{
"marvell,mv88f6820-pinctrl",
armada_38x_pins, nitems(armada_38x_pins)
},
{
"marvell,mv88f6828-pinctrl",
armada_38x_pins, nitems(armada_38x_pins)
},
{
"marvell,ap806-pinctrl",
armada_ap806_pins, nitems(armada_ap806_pins)
},
{
"marvell,cp110-pinctrl",
armada_cp110_pins, nitems(armada_cp110_pins)
},
};
int
mvpinctrl_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
int i;
for (i = 0; i < nitems(mvpinctrl_pins); i++) {
if (OF_is_compatible(faa->fa_node, mvpinctrl_pins[i].compat))
return 1;
}
return 0;
}
void
mvpinctrl_attach(struct device *parent, struct device *self, void *aux)
{
struct mvpinctrl_softc *sc = (struct mvpinctrl_softc *)self;
struct fdt_attach_args *faa = aux;
int i;
if (faa->fa_nreg > 0) {
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);
sc->sc_rm = regmap_bynode(faa->fa_node);
} else {
/* No registers; use regmap provided by parent. */
sc->sc_rm = regmap_bynode(OF_parent(faa->fa_node));
}
if (sc->sc_rm == NULL) {
printf(": no registers\n");
return;
}
printf("\n");
for (i = 0; i < nitems(mvpinctrl_pins); i++) {
if (OF_is_compatible(faa->fa_node, mvpinctrl_pins[i].compat)) {
sc->sc_pins = mvpinctrl_pins[i].pins;
sc->sc_npins = mvpinctrl_pins[i].npins;
break;
}
}
KASSERT(sc->sc_pins);
pinctrl_register(faa->fa_node, mvpinctrl_pinctrl, sc);
}
int
mvpinctrl_pinctrl(uint32_t phandle, void *cookie)
{
struct mvpinctrl_softc *sc = cookie;
char *pins, *pin, *func;
int i, flen, plen, node;
node = OF_getnodebyphandle(phandle);
if (node == 0)
return -1;
flen = OF_getproplen(node, "marvell,function");
if (flen <= 0)
return -1;
func = malloc(flen, M_TEMP, M_WAITOK);
OF_getprop(node, "marvell,function", func, flen);
plen = OF_getproplen(node, "marvell,pins");
if (plen <= 0)
return -1;
pin = pins = malloc(plen, M_TEMP, M_WAITOK);
OF_getprop(node, "marvell,pins", pins, plen);
while (plen > 0) {
for (i = 0; i < sc->sc_npins; i++) {
uint32_t off, shift;
if (strcmp(sc->sc_pins[i].pin, pin))
continue;
if (strcmp(sc->sc_pins[i].function, func))
continue;
off = (sc->sc_pins[i].pid / 8) * sizeof(uint32_t);
shift = (sc->sc_pins[i].pid % 8) * 4;
HWRITE4(sc, off, (HREAD4(sc, off) & ~(0xf << shift)) |
(sc->sc_pins[i].value << shift));
break;
}
if (i == sc->sc_npins)
printf("%s: unsupported pin %s function %s\n",
sc->sc_dev.dv_xname, pin, func);
plen -= strlen(pin) + 1;
pin += strlen(pin) + 1;
}
free(func, M_TEMP, flen);
free(pins, M_TEMP, plen);
return 0;
}
|
