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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/* $OpenBSD: lm87.c,v 1.2 2005/11/14 22:22:32 deraadt Exp $ */
/*
* Copyright (c) 2005 Mark Kettenis
*
* 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/ofw/openfirm.h>
#include <arch/macppc/dev/maci2cvar.h>
/* LM87 registers */
#define LM87_2_5V 0x20
#define LM87_VCCP1 0x21
#define LM87_VCC 0x22
#define LM87_5V 0x23
#define LM87_12V 0x24
#define LM87_VCCP2 0x25
#define LM87_EXT_TEMP 0x26
#define LM87_INT_TEMP 0x27
#define LM87_FAN1 0x28
#define LM87_FAN2 0x28
#define LM87_REVISION 0x3f
#define LM87_FANDIV 0x47
/* Sensors */
#define LMENV_2_5V 0
#define LMENV_VCCP1 1
#define LMENV_VCC 2
#define LMENV_5V 3
#define LMENV_12V 4
#define LMENV_VCCP2 5
#define LMENV_EXT_TEMP 6
#define LMENV_INT_TEMP 7
#define LMENV_FAN1 8
#define LMENV_FAN2 9
#define LMENV_NUM_SENSORS 10
struct lmenv_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
struct sensor sc_sensor[LMENV_NUM_SENSORS];
int sc_fan1_div, sc_fan2_div;
};
int lmenv_match(struct device *, void *, void *);
void lmenv_attach(struct device *, struct device *, void *);
void lmenv_refresh(void *);
struct cfattach lmenv_ca = {
sizeof(struct lmenv_softc), lmenv_match, lmenv_attach
};
struct cfdriver lmenv_cd = {
NULL, "lmenv", DV_DULL
};
int
lmenv_match(struct device *parent, void *match, void *aux)
{
struct maci2c_attach_args *ia = aux;
char compat[32], name[32];
memset(compat, 0, sizeof compat);
OF_getprop(ia->ia_node, "compatible", &compat, sizeof compat);
if (strcmp(compat, "lm87cimt") == 0)
return (1);
memset(name, 0, sizeof name);
OF_getprop(ia->ia_node, "name", &name, sizeof name);
if (strcmp(name, "lm87") == 0)
return (1);
return (0);
}
void
lmenv_attach(struct device *parent, struct device *self, void *aux)
{
struct lmenv_softc *sc = (struct lmenv_softc *)self;
struct maci2c_attach_args *ia = aux;
u_int8_t cmd, data;
int i;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
iic_acquire_bus(sc->sc_tag, 0);
cmd = LM87_FANDIV;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot read Fan Divisor register\n");
return;
}
sc->sc_fan1_div = (data >> 4) & 0x03;
sc->sc_fan2_div = (data >> 6) & 0x03;
cmd = LM87_REVISION;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot read ID register\n");
return;
}
iic_release_bus(sc->sc_tag, 0);
printf(": LM87 rev %x", data);
/* Initialize sensor data. */
for (i = 0; i < LMENV_NUM_SENSORS; i++)
strlcpy(sc->sc_sensor[i].device, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensor[i].device));
sc->sc_sensor[LMENV_2_5V].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_2_5V].desc, "+2.5Vin",
sizeof(sc->sc_sensor[LMENV_2_5V].desc));
sc->sc_sensor[LMENV_VCCP1].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCCP1].desc, "Vccp1",
sizeof(sc->sc_sensor[LMENV_VCCP1].desc));
sc->sc_sensor[LMENV_VCC].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCC].desc, "+Vcc",
sizeof(sc->sc_sensor[LMENV_VCC].desc));
sc->sc_sensor[LMENV_5V].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_5V].desc, "+5Vin/Vcc",
sizeof(sc->sc_sensor[LMENV_5V].desc));
sc->sc_sensor[LMENV_12V].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_12V].desc, "+12Vin",
sizeof(sc->sc_sensor[LMENV_12V].desc));
sc->sc_sensor[LMENV_VCCP2].type = SENSOR_VOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCCP2].desc, "Vccp2",
sizeof(sc->sc_sensor[LMENV_VCCP2].desc));
sc->sc_sensor[LMENV_EXT_TEMP].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[LMENV_EXT_TEMP].desc, "Ext. Temp.",
sizeof(sc->sc_sensor[LMENV_EXT_TEMP].desc));
sc->sc_sensor[LMENV_INT_TEMP].type = SENSOR_TEMP;
strlcpy(sc->sc_sensor[LMENV_INT_TEMP].desc, "Int. Temp.",
sizeof(sc->sc_sensor[LMENV_INT_TEMP].desc));
sc->sc_sensor[LMENV_FAN1].type = SENSOR_FANRPM;
strlcpy(sc->sc_sensor[LMENV_FAN1].desc, "FAN1",
sizeof(sc->sc_sensor[LMENV_FAN1].desc));
sc->sc_sensor[LMENV_FAN2].type = SENSOR_FANRPM;
strlcpy(sc->sc_sensor[LMENV_FAN2].desc, "FAN2",
sizeof(sc->sc_sensor[LMENV_FAN2].desc));
if (sensor_task_register(sc, lmenv_refresh, 5)) {
printf(": unable to register update task\n");
return;
}
for (i = 0; i < LMENV_NUM_SENSORS; i++)
SENSOR_ADD(&sc->sc_sensor[i]);
printf("\n");
}
void
lmenv_refresh(void *arg)
{
struct lmenv_softc *sc = arg;
u_int8_t cmd, data;
int sensor;
iic_acquire_bus(sc->sc_tag, 0);
for (sensor = 0; sensor < LMENV_NUM_SENSORS; sensor++) {
cmd = LM87_2_5V + sensor;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
sc->sc_sensor[sensor].flags |= SENSOR_FINVALID;
continue;
}
switch (sensor) {
case LMENV_2_5V:
sc->sc_sensor[sensor].value = 2500000 * data / 192;
break;
case LMENV_5V:
sc->sc_sensor[sensor].value = 5000000 * data / 192;
break;
case LMENV_12V:
sc->sc_sensor[sensor].value = 12000000 * data / 192;
break;
case LMENV_VCCP1:
case LMENV_VCCP2:
sc->sc_sensor[sensor].value = 2700000 * data / 192;
break;
case LMENV_VCC:
sc->sc_sensor[sensor].value = 3300000 * data / 192;
break;
case LMENV_EXT_TEMP:
case LMENV_INT_TEMP:
sc->sc_sensor[sensor].value =
(int8_t)data * 1000000 + 273150000;
break;
case LMENV_FAN1:
sc->sc_sensor[sensor].value =
(1350000 * data) / sc->sc_fan1_div;
break;
case LMENV_FAN2:
sc->sc_sensor[sensor].value =
(1350000 * data) / sc->sc_fan2_div;
break;
default:
sc->sc_sensor[sensor].flags |= SENSOR_FINVALID;
continue;
}
sc->sc_sensor[sensor].flags &= ~SENSOR_FINVALID;
}
iic_release_bus(sc->sc_tag, 0);
}
|
