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
|
/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "fan.h"
#include "hooks.h"
#include "host_command.h"
#include "temp_sensor.h"
#include "thermal.h"
#include "util.h"
/* Console output macros */
#define CPUTS(outstr) cputs(CC_THERMAL, outstr)
#define CPRINTS(format, args...) cprints(CC_THERMAL, format, ##args)
struct fan_step {
/*
* Sensor 1~5 trigger point, set -1 if we're not using this
* sensor to determine fan speed.
*/
int8_t on[TEMP_SENSOR_COUNT];
/*
* Sensor 1~5 trigger point, set -1 if we're not using this
* sensor to determine fan speed.
*/
int8_t off[TEMP_SENSOR_COUNT];
/* Fan 1~2 rpm */
uint16_t rpm[FAN_CH_COUNT];
};
static const struct fan_step fan_table[] = {
{
/* level 0 */
.on = { 48, 62, 48, 50, -1 },
.off = { 99, 99, 99, 99, -1 },
.rpm = { 0 },
},
{
/* level 1 */
.on = { 50, 62, 50, 52, -1 },
.off = { 47, 99, 47, 49, -1 },
.rpm = { 3200 },
},
{
/* level 2 */
.on = { 53, 62, 53, 54, -1 },
.off = { 49, 99, 49, 51, -1 },
.rpm = { 4050 },
},
{
/* level 3 */
.on = { 100, 100, 100, 100, -1 },
.off = { 51, 60, 51, 52, -1 },
.rpm = { 5800 },
},
};
#define NUM_FAN_LEVELS ARRAY_SIZE(fan_table)
static int fan_table_to_rpm(int fan, int *temp)
{
static int current_level;
static int prev_tmp[TEMP_SENSOR_COUNT];
int i;
/*
* Compare the current and previous temperature, we have
* the three paths :
* 1. decreasing path. (check the release point)
* 2. increasing path. (check the trigger point)
* 3. invariant path. (return the current RPM)
*/
if (temp[TEMP_SENSOR_1_SOC] < prev_tmp[TEMP_SENSOR_1_SOC] ||
temp[TEMP_SENSOR_2_CHARGER] < prev_tmp[TEMP_SENSOR_2_CHARGER] ||
temp[TEMP_SENSOR_3_WWAN] < prev_tmp[TEMP_SENSOR_3_WWAN] ||
temp[TEMP_SENSOR_4_DDR] < prev_tmp[TEMP_SENSOR_4_DDR]) {
for (i = current_level; i > 0; i--) {
if (temp[TEMP_SENSOR_1_SOC] <
fan_table[i].off[TEMP_SENSOR_1_SOC] &&
temp[TEMP_SENSOR_2_CHARGER] <
fan_table[i].off[TEMP_SENSOR_2_CHARGER] &&
temp[TEMP_SENSOR_3_WWAN] <
fan_table[i].off[TEMP_SENSOR_3_WWAN] &&
temp[TEMP_SENSOR_4_DDR] <
fan_table[i].off[TEMP_SENSOR_4_DDR])
current_level = i - 1;
else
break;
}
} else if (temp[TEMP_SENSOR_1_SOC] > prev_tmp[TEMP_SENSOR_1_SOC] ||
temp[TEMP_SENSOR_2_CHARGER] >
prev_tmp[TEMP_SENSOR_2_CHARGER] ||
temp[TEMP_SENSOR_3_WWAN] > prev_tmp[TEMP_SENSOR_3_WWAN] ||
temp[TEMP_SENSOR_4_DDR] > prev_tmp[TEMP_SENSOR_4_DDR]) {
for (i = current_level; i < NUM_FAN_LEVELS; i++) {
if (temp[TEMP_SENSOR_1_SOC] >
fan_table[i].on[TEMP_SENSOR_1_SOC] ||
(temp[TEMP_SENSOR_2_CHARGER] >
fan_table[i].on[TEMP_SENSOR_2_CHARGER] &&
temp[TEMP_SENSOR_3_WWAN] >
fan_table[i].on[TEMP_SENSOR_3_WWAN]) ||
temp[TEMP_SENSOR_4_DDR] >
fan_table[i].on[TEMP_SENSOR_4_DDR])
current_level = i + 1;
else
break;
}
}
if (current_level < 0)
current_level = 0;
if (current_level >= NUM_FAN_LEVELS)
current_level = NUM_FAN_LEVELS - 1;
for (i = 0; i < TEMP_SENSOR_COUNT; ++i)
prev_tmp[i] = temp[i];
return fan_table[current_level].rpm[FAN_CH_0];
}
void board_override_fan_control(int fan, int *tmp)
{
if (chipset_in_state(CHIPSET_STATE_ON | CHIPSET_STATE_ANY_SUSPEND)) {
fan_set_rpm_mode(FAN_CH(fan), 1);
fan_set_rpm_target(FAN_CH(fan), fan_table_to_rpm(fan, tmp));
}
}
|
