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
|
/* $OpenBSD: thmc50.c,v 1.2 2007/09/18 09:55:31 kettenis Exp $ */
/*
* Copyright (c) 2007 Theo de Raadt
*
* 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 <dev/i2c/i2cvar.h>
/* ADM 1022 registers */
#define THMC50_TEMP0 0x27
#define THMC50_TEMP1 0x26
#define THMC50_TEMP2 0x20
/* Sensors */
#define THMC_TEMP0 0
#define THMC_TEMP1 1
#define THMC_TEMP2 2
#define THMC_NUM_SENSORS 3
struct thmc_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
struct ksensor sc_sensor[THMC_NUM_SENSORS];
struct ksensordev sc_sensordev;
};
int thmc_match(struct device *, void *, void *);
void thmc_attach(struct device *, struct device *, void *);
void thmc_refresh(void *);
struct cfattach thmc_ca = {
sizeof(struct thmc_softc), thmc_match, thmc_attach
};
struct cfdriver thmc_cd = {
NULL, "thmc", DV_DULL
};
int
thmc_match(struct device *parent, void *match, void *aux)
{
struct i2c_attach_args *ia = aux;
if (strcmp(ia->ia_name, "thmc50") == 0 ||
strcmp(ia->ia_name, "adm1022") == 0 ||
strcmp(ia->ia_name, "adm1028") == 0)
return (1);
return (0);
}
void
thmc_attach(struct device *parent, struct device *self, void *aux)
{
struct thmc_softc *sc = (struct thmc_softc *)self;
struct i2c_attach_args *ia = aux;
int numsensors = THMC_NUM_SENSORS;
int i;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
/* Initialize sensor data. */
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
sc->sc_sensor[THMC_TEMP0].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[THMC_TEMP0].desc, "Internal",
sizeof(sc->sc_sensor[THMC_TEMP0].desc));
sc->sc_sensor[THMC_TEMP1].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[THMC_TEMP1].desc, "External",
sizeof(sc->sc_sensor[THMC_TEMP1].desc));
if (strcmp(ia->ia_name, "adm1022") == 0) {
/* Only the adm1022 has a THMC50_TEMP2 sensor */
sc->sc_sensor[THMC_TEMP2].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[THMC_TEMP2].desc, "External",
sizeof(sc->sc_sensor[THMC_TEMP2].desc));
} else {
sc->sc_sensor[THMC_TEMP2].type = -1;
numsensors--;
}
if (sensor_task_register(sc, thmc_refresh, 5) == NULL) {
printf(", unable to register update task\n");
return;
}
for (i = 0; i < numsensors; i++)
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor[i]);
sensordev_install(&sc->sc_sensordev);
printf("\n");
}
void
thmc_refresh(void *arg)
{
struct thmc_softc *sc = arg;
u_int8_t cmd;
int8_t sdata;
iic_acquire_bus(sc->sc_tag, 0);
cmd = THMC50_TEMP0;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0) {
sc->sc_sensor[THMC_TEMP0].value = 273150000 + 1000000 * sdata;
sc->sc_sensor[THMC_TEMP0].flags &= ~SENSOR_FINVALID;
} else
sc->sc_sensor[THMC_TEMP0].flags |= SENSOR_FINVALID;
cmd = THMC50_TEMP1;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0) {
sc->sc_sensor[THMC_TEMP1].value = 273150000 + 1000000 * sdata;
sc->sc_sensor[THMC_TEMP1].flags &= ~SENSOR_FINVALID;
} else
sc->sc_sensor[THMC_TEMP1].flags |= SENSOR_FINVALID;
if (sc->sc_sensor[THMC_TEMP2].type > 0) {
cmd = THMC50_TEMP2;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &sdata, sizeof sdata, 0) == 0) {
sc->sc_sensor[THMC_TEMP2].value = 273150000 + 1000000 * sdata;
sc->sc_sensor[THMC_TEMP2].flags &= ~SENSOR_FINVALID;
} else
sc->sc_sensor[THMC_TEMP2].flags |= SENSOR_FINVALID;
}
iic_release_bus(sc->sc_tag, 0);
}
|
