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
|
/* Copyright 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Temperature sensor module for Chrome EC */
#include "common.h"
#include "console.h"
#include "hooks.h"
#include "host_command.h"
#include "task.h"
#include "temp_sensor.h"
#include "thermal.h"
#include "timer.h"
#include "util.h"
int temp_sensor_read(enum temp_sensor_id id, int *temp_ptr)
{
const struct temp_sensor_t *sensor;
if (id < 0 || id >= TEMP_SENSOR_COUNT)
return EC_ERROR_INVAL;
sensor = temp_sensors + id;
return sensor->read(sensor->idx, temp_ptr);
}
static void update_mapped_memory(void)
{
int i, t;
uint8_t *mptr = host_get_memmap(EC_MEMMAP_TEMP_SENSOR);
for (i = 0; i < TEMP_SENSOR_COUNT; i++, mptr++) {
/*
* Switch to second range if first one is full, or stop if
* second range is also full.
*/
if (i == EC_TEMP_SENSOR_ENTRIES)
mptr = host_get_memmap(EC_MEMMAP_TEMP_SENSOR_B);
else if (i >= EC_TEMP_SENSOR_ENTRIES +
EC_TEMP_SENSOR_B_ENTRIES)
break;
switch (temp_sensor_read(i, &t)) {
case EC_ERROR_NOT_POWERED:
*mptr = EC_TEMP_SENSOR_NOT_POWERED;
break;
case EC_ERROR_NOT_CALIBRATED:
*mptr = EC_TEMP_SENSOR_NOT_CALIBRATED;
break;
case EC_SUCCESS:
*mptr = t - EC_TEMP_SENSOR_OFFSET;
break;
default:
*mptr = EC_TEMP_SENSOR_ERROR;
}
}
}
/* Run after other TEMP tasks, so sensors will have updated first. */
DECLARE_HOOK(HOOK_SECOND, update_mapped_memory, HOOK_PRIO_TEMP_SENSOR_DONE);
static void temp_sensor_init(void)
{
int i;
uint8_t *base, *base_b;
/*
* Initialize memory-mapped data so that if a temperature value is read
* before we actually poll the sensors, we don't end up with an insane
* value.
*/
base = host_get_memmap(EC_MEMMAP_TEMP_SENSOR);
base_b = host_get_memmap(EC_MEMMAP_TEMP_SENSOR_B);
for (i = 0; i < TEMP_SENSOR_COUNT; ++i) {
if (i < EC_TEMP_SENSOR_ENTRIES)
base[i] = EC_TEMP_SENSOR_DEFAULT;
else
base_b[i - EC_TEMP_SENSOR_ENTRIES] =
EC_TEMP_SENSOR_DEFAULT;
}
/* Set the rest of memory region to SENSOR_NOT_PRESENT */
for (; i < EC_TEMP_SENSOR_ENTRIES + EC_TEMP_SENSOR_B_ENTRIES; ++i) {
if (i < EC_TEMP_SENSOR_ENTRIES)
base[i] = EC_TEMP_SENSOR_NOT_PRESENT;
else
base_b[i - EC_TEMP_SENSOR_ENTRIES] =
EC_TEMP_SENSOR_NOT_PRESENT;
}
/* Temp sensor data is present, with B range supported. */
*host_get_memmap(EC_MEMMAP_THERMAL_VERSION) = 2;
}
DECLARE_HOOK(HOOK_INIT, temp_sensor_init, HOOK_PRIO_DEFAULT);
/*****************************************************************************/
/* Console commands */
static int command_temps(int argc, char **argv)
{
int t, i;
int rv, rv1 = EC_SUCCESS;
for (i = 0; i < TEMP_SENSOR_COUNT; ++i) {
ccprintf(" %-20s: ", temp_sensors[i].name);
rv = temp_sensor_read(i, &t);
if (rv)
rv1 = rv;
switch (rv) {
case EC_SUCCESS:
ccprintf("%d K = %d C", t, K_TO_C(t));
#ifdef CONFIG_THROTTLE_AP
if (thermal_params[i].temp_fan_off &&
thermal_params[i].temp_fan_max)
ccprintf(" %d%%",
thermal_fan_percent(
thermal_params[i].temp_fan_off,
thermal_params[i].temp_fan_max,
t));
#endif
ccprintf("\n");
break;
case EC_ERROR_NOT_POWERED:
ccprintf("Not powered\n");
break;
case EC_ERROR_NOT_CALIBRATED:
ccprintf("Not calibrated\n");
break;
default:
ccprintf("Error %d\n", rv);
}
}
return rv1;
}
DECLARE_CONSOLE_COMMAND(temps, command_temps,
NULL,
"Print temp sensors");
/*****************************************************************************/
/* Host commands */
int temp_sensor_command_get_info(struct host_cmd_handler_args *args)
{
const struct ec_params_temp_sensor_get_info *p = args->params;
struct ec_response_temp_sensor_get_info *r = args->response;
int id = p->id;
if (id >= TEMP_SENSOR_COUNT)
return EC_RES_ERROR;
strzcpy(r->sensor_name, temp_sensors[id].name, sizeof(r->sensor_name));
r->sensor_type = temp_sensors[id].type;
args->response_size = sizeof(*r);
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TEMP_SENSOR_GET_INFO,
temp_sensor_command_get_info,
EC_VER_MASK(0));
|
