blob: 59c5a989aa4e3562a15fcb76308ec463008449d8 (
plain)
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
|
/* 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 "charger.h"
#include "charge_state.h"
#include "common.h"
#include "config.h"
#include "console.h"
#include "driver/charger/rt9490.h"
#include "hooks.h"
#include "temp_sensor/temp_sensor.h"
#include "thermal.h"
#include "util.h"
#define NUM_CURRENT_LEVELS ARRAY_SIZE(current_table)
#define TEMP_THRESHOLD 55
#define TEMP_BUFF_SIZE 60
#define KEEP_TIME 5
BUILD_ASSERT(IS_ENABLED(CONFIG_BOARD_TENTACRUEL) || IS_ENABLED(CONFIG_TEST));
/* calculate current average temperature */
static int average_tempature(void)
{
static int temp_history_buffer[TEMP_BUFF_SIZE];
static int buff_ptr;
static int temp_sum;
static int past_temp;
static int avg_temp;
int cur_temp, t;
temp_sensor_read(TEMP_SENSOR_ID(DT_NODELABEL(temp_charger)), &t);
cur_temp = K_TO_C(t);
past_temp = temp_history_buffer[buff_ptr];
temp_history_buffer[buff_ptr] = cur_temp;
temp_sum = temp_sum + temp_history_buffer[buff_ptr] - past_temp;
buff_ptr++;
if (buff_ptr >= TEMP_BUFF_SIZE) {
buff_ptr = 0;
}
/* Calculate per minute temperature.
* It's expected low temperature when the first 60 seconds.
*/
avg_temp = temp_sum / TEMP_BUFF_SIZE;
return avg_temp;
}
static int current_level;
/* Limit charging current table : 3600/3000/2400/1800
* note this should be in descending order.
*/
static uint16_t current_table[] = {
3600,
3000,
2400,
1800,
};
/* Called by hook task every hook second (1 sec) */
static void current_update(void)
{
int temp;
static uint8_t uptime;
static uint8_t dntime;
temp = average_tempature();
#ifndef CONFIG_TEST
if (charge_get_state() == PWR_STATE_DISCHARGE) {
current_level = 0;
uptime = 0;
dntime = 0;
return;
}
#endif
if (temp >= TEMP_THRESHOLD) {
dntime = 0;
if (uptime < KEEP_TIME) {
uptime++;
} else {
uptime = 0;
current_level++;
}
} else if (current_level != 0 && temp < TEMP_THRESHOLD) {
uptime = 0;
if (dntime < KEEP_TIME) {
dntime++;
} else {
dntime = 0;
current_level--;
}
} else {
uptime = 0;
dntime = 0;
}
if (current_level > NUM_CURRENT_LEVELS) {
current_level = NUM_CURRENT_LEVELS;
}
}
DECLARE_HOOK(HOOK_SECOND, current_update, HOOK_PRIO_DEFAULT);
int charger_profile_override(struct charge_state_data *curr)
{
/*
* Precharge must be executed when communication is failed on
* dead battery.
*/
if (!(curr->batt.flags & BATT_FLAG_RESPONSIVE))
return 0;
if (current_level != 0) {
if (curr->requested_current > current_table[current_level - 1])
curr->requested_current =
current_table[current_level - 1];
}
return 0;
}
enum ec_status charger_profile_override_get_param(uint32_t param,
uint32_t *value)
{
return EC_RES_INVALID_PARAM;
}
enum ec_status charger_profile_override_set_param(uint32_t param,
uint32_t value)
{
return EC_RES_INVALID_PARAM;
}
|
