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
|
/* $OpenBSD: hitemp.c,v 1.1 2018/08/27 21:09:47 kettenis Exp $ */
/*
* Copyright (c) 2018 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/sensors.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/fdt.h>
/* Registers */
#define HI3660_OFFSET 0x040
#define HI3660_TEMP 0x01c
#define HI3660_TH 0x020
#define HI3660_LAG 0x028
#define HI3660_INT_EN 0x02c
#define HI3660_INT_CLR 0x030
#define HI3670_OFFSET 0x100
#define HI3670_INT_EN 0x064
#define HITEMP_NSENSORS 4
struct hitemp_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_size_t sc_offset;
uint64_t (*sc_calc_temp)(uint64_t);
struct ksensor sc_sensors[HITEMP_NSENSORS];
struct ksensordev sc_sensordev;
};
int hitemp_match(struct device *, void *, void *);
void hitemp_attach(struct device *, struct device *, void *);
struct cfattach hitemp_ca = {
sizeof (struct hitemp_softc), hitemp_match, hitemp_attach
};
struct cfdriver hitemp_cd = {
NULL, "hitemp", DV_DULL
};
struct hitemp_compat {
const char *compat;
bus_size_t offset;
uint64_t (*calc_temp)(uint64_t);
};
uint64_t hi3660_calc_temp(uint64_t);
uint64_t hi3670_calc_temp(uint64_t);
struct hitemp_compat hitemp_compat[] = {
{
"hsilicon,hi3660-tsensor",
HI3660_OFFSET, hi3660_calc_temp
},
{
"hisilicon,kirin970-tsensor",
HI3670_OFFSET, hi3670_calc_temp
}
};
void hitemp_refresh_sensors(void *);
int
hitemp_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
int i;
for (i = 0; i < nitems(hitemp_compat); i++) {
if (OF_is_compatible(faa->fa_node, hitemp_compat[i].compat))
return 1;
}
return 0;
}
void
hitemp_attach(struct device *parent, struct device *self, void *aux)
{
struct hitemp_softc *sc = (struct hitemp_softc *)self;
struct fdt_attach_args *faa = aux;
int i;
if (faa->fa_nreg < 1) {
printf(": no registers\n");
return;
}
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;
}
printf("\n");
for (i = 0; i < nitems(hitemp_compat); i++) {
if (OF_is_compatible(faa->fa_node, hitemp_compat[i].compat)) {
break;
}
}
KASSERT(i < nitems(hitemp_compat));
sc->sc_offset = hitemp_compat[i].offset;
sc->sc_calc_temp = hitemp_compat[i].calc_temp;
/* Register sensors. */
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
for (i = 0; i < HITEMP_NSENSORS; i++) {
sc->sc_sensors[i].type = SENSOR_TEMP;
sc->sc_sensors[i].flags = SENSOR_FINVALID;
sensor_attach(&sc->sc_sensordev, &sc->sc_sensors[i]);
}
sensordev_install(&sc->sc_sensordev);
sensor_task_register(sc, hitemp_refresh_sensors, 5);
}
uint64_t
hi3660_calc_temp(uint64_t value)
{
return 273150000 - 63780000 + value * 205000;
}
uint64_t
hi3670_calc_temp(uint64_t value)
{
return 273150000 - 73720000 + value * 216000;
}
void
hitemp_refresh_sensors(void *arg)
{
struct hitemp_softc *sc = arg;
bus_size_t offset = 0;
uint32_t value;
uint64_t temp;
int i;
for (i = 0; i < HITEMP_NSENSORS; i++) {
value = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
offset + HI3660_TEMP);
temp = sc->sc_calc_temp(value);
sc->sc_sensors[i].value = temp;
sc->sc_sensors[i].flags &= ~SENSOR_FINVALID;
offset += sc->sc_offset;
}
}
|
