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
211
212
213
214
215
216
217
218
219
220
221
222
|
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Emmanuel Vadot <manu@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/extres/syscon/syscon.h>
#include <dev/extres/regulator/regulator.h>
#include "syscon_if.h"
#define RK3288_GRF_IO_VSEL 0x380
#define RK3399_GRF_IO_VSEL 0xe640
#define RK3399_PMUGRF_SOC_CON0 0x180
struct rk_iodomain_supply {
char *name;
uint32_t bit;
};
struct rk_iodomain_softc;
struct rk_iodomain_conf {
struct rk_iodomain_supply *supply;
int nsupply;
uint32_t grf_reg;
void (*init)(struct rk_iodomain_softc *sc);
};
struct rk_iodomain_softc {
device_t dev;
struct syscon *grf;
phandle_t node;
struct rk_iodomain_conf *conf;
};
static struct rk_iodomain_supply rk3288_supply[] = {
{"lcdc-supply", 0},
{"dvp-supply", 1},
{"flash0-supply", 2},
{"flash1-supply", 3},
{"wifi-supply", 4},
{"bb-supply", 5},
{"audio-supply", 6},
{"sdcard-supply", 7},
{"gpio30-supply", 8},
{"gpio1830-supply", 9},
};
static struct rk_iodomain_conf rk3288_conf = {
.supply = rk3288_supply,
.nsupply = nitems(rk3288_supply),
.grf_reg = RK3288_GRF_IO_VSEL,
};
static struct rk_iodomain_supply rk3399_supply[] = {
{"bt656-supply", 0},
{"audio-supply", 1},
{"sdmmc-supply", 2},
{"gpio1830-supply", 3},
};
static struct rk_iodomain_conf rk3399_conf = {
.supply = rk3399_supply,
.nsupply = nitems(rk3399_supply),
.grf_reg = RK3399_GRF_IO_VSEL,
};
static struct rk_iodomain_supply rk3399_pmu_supply[] = {
{"pmu1830-supply", 9},
};
static void rk3399_pmu_init(struct rk_iodomain_softc *sc);
static struct rk_iodomain_conf rk3399_pmu_conf = {
.supply = rk3399_pmu_supply,
.nsupply = nitems(rk3399_pmu_supply),
.grf_reg = RK3399_PMUGRF_SOC_CON0,
.init = rk3399_pmu_init,
};
static struct ofw_compat_data compat_data[] = {
{"rockchip,rk3288-io-voltage-domain", (uintptr_t)&rk3288_conf},
{"rockchip,rk3399-io-voltage-domain", (uintptr_t)&rk3399_conf},
{"rockchip,rk3399-pmu-io-voltage-domain", (uintptr_t)&rk3399_pmu_conf},
{NULL, 0}
};
static void
rk3399_pmu_init(struct rk_iodomain_softc *sc)
{
SYSCON_WRITE_4(sc->grf, RK3399_PMUGRF_SOC_CON0,
(1 << 8) | (1 << (8 + 16))); /* set pmu1830_volsel */
}
static void
rk_iodomain_set(struct rk_iodomain_softc *sc)
{
regulator_t supply;
uint32_t reg = 0;
uint32_t mask = 0;
int uvolt, i;
for (i = 0; i < sc->conf->nsupply; i++) {
mask |= (1 << sc->conf->supply[i].bit) << 16;
if (regulator_get_by_ofw_property(sc->dev, sc->node,
sc->conf->supply[i].name, &supply) == 0) {
if (regulator_get_voltage(supply, &uvolt) == 0) {
if (uvolt == 1800000)
reg |= (1 << sc->conf->supply[i].bit);
else if (uvolt != 3000000)
device_printf(sc->dev,
"%s regulator is at %duV, ignoring\n",
sc->conf->supply[i].name, uvolt);
} else
device_printf(sc->dev, "Cannot get current "
"voltage for regulator %s\n",
sc->conf->supply[i].name);
}
}
SYSCON_WRITE_4(sc->grf, sc->conf->grf_reg, reg | mask);
if (sc->conf->init != NULL)
sc->conf->init(sc);
}
static int
rk_iodomain_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
return (ENXIO);
device_set_desc(dev, "RockChip IO Voltage Domain");
return (BUS_PROBE_DEFAULT);
}
static int
rk_iodomain_attach(device_t dev)
{
struct rk_iodomain_softc *sc;
int rv;
sc = device_get_softc(dev);
sc->dev = dev;
sc->node = ofw_bus_get_node(dev);
rv = syscon_get_handle_default(dev, &sc->grf);
if (rv != 0) {
device_printf(dev, "Cannot get grf handle\n");
return (ENXIO);
}
sc->conf = (struct rk_iodomain_conf *)ofw_bus_search_compatible(dev, compat_data)->ocd_data;
rk_iodomain_set(sc);
return (0);
}
static int
rk_iodomain_detach(device_t dev)
{
return (0);
}
static device_method_t rk_iodomain_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, rk_iodomain_probe),
DEVMETHOD(device_attach, rk_iodomain_attach),
DEVMETHOD(device_detach, rk_iodomain_detach),
DEVMETHOD_END
};
static driver_t rk_iodomain_driver = {
"rk_iodomain",
rk_iodomain_methods,
sizeof(struct rk_iodomain_softc),
};
static devclass_t rk_iodomain_devclass;
EARLY_DRIVER_MODULE(rk_iodomain, simplebus, rk_iodomain_driver,
rk_iodomain_devclass, 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
|
