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
|
/* Copyright 2017 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.
*
* Power and battery LED control for MEC1701 EVB.
*/
#include "battery.h"
#include "charge_state.h"
#include "chipset.h"
#include "ec_commands.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "led_common.h"
#include "util.h"
#define BAT_LED_ON 1
#define BAT_LED_OFF 0
#define CRITICAL_LOW_BATTERY_PERCENTAGE 3
#define LOW_BATTERY_PERCENTAGE 10
#define LED_TOTAL_4SECS_TICKS 4
#define LED_TOTAL_2SECS_TICKS 2
#define LED_ON_1SEC_TICKS 1
#define LED_ON_2SECS_TICKS 2
/*
* NOTE: GPIO_BAT_LED_xxx defined in board.h
*/
const enum ec_led_id supported_led_ids[] = {
EC_LED_ID_BATTERY_LED};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
enum led_color {
LED_OFF = 0,
LED_RED,
LED_AMBER,
LED_GREEN,
LED_COLOR_COUNT /* Number of colors, not a color itself */
};
static int bat_led_set_color(enum led_color color)
{
switch (color) {
case LED_OFF:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
break;
case LED_RED:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
break;
case LED_AMBER:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
break;
case LED_GREEN:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
break;
default:
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
void led_get_brightness_range(enum ec_led_id led_id,
uint8_t *brightness_range)
{
brightness_range[EC_LED_COLOR_RED] = 1;
brightness_range[EC_LED_COLOR_GREEN] = 1;
}
static int board_led_set_color_battery(enum led_color color)
{
return bat_led_set_color(color);
}
static int board_led_set_color(enum ec_led_id led_id, enum led_color color)
{
int rv;
led_auto_control(led_id, 0);
switch (led_id) {
case EC_LED_ID_BATTERY_LED:
rv = board_led_set_color_battery(color);
break;
default:
return EC_ERROR_UNKNOWN;
}
return rv;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
if (brightness[EC_LED_COLOR_RED] != 0 &&
brightness[EC_LED_COLOR_GREEN] != 0)
board_led_set_color(led_id, LED_AMBER);
else if (brightness[EC_LED_COLOR_RED] != 0)
board_led_set_color(led_id, LED_RED);
else if (brightness[EC_LED_COLOR_GREEN] != 0)
board_led_set_color(led_id, LED_GREEN);
else
board_led_set_color(led_id, LED_OFF);
return EC_SUCCESS;
}
static void board_led_set_battery(void)
{
#ifdef CONFIG_CHARGER
static int battery_ticks;
uint32_t chflags = charge_get_flags();
battery_ticks++;
/* BAT LED behavior:
* Same as the chromeos spec
* Green/Amber for CHARGE_FLAG_FORCE_IDLE
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
board_led_set_color_battery(LED_AMBER);
break;
case PWR_STATE_DISCHARGE:
/* Less than 3%, blink one second every two second */
if (!chipset_in_state(CHIPSET_STATE_ANY_OFF) &&
charge_get_percent() < CRITICAL_LOW_BATTERY_PERCENTAGE)
board_led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
/* Less than 10%, blink one second every four seconds */
else if (!chipset_in_state(CHIPSET_STATE_ANY_OFF) &&
charge_get_percent() < LOW_BATTERY_PERCENTAGE)
board_led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
else
board_led_set_color_battery(LED_OFF);
break;
case PWR_STATE_ERROR:
board_led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_RED : LED_OFF);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
board_led_set_color_battery(LED_GREEN);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
board_led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_2SECS_TICKS) ? LED_GREEN : LED_AMBER);
else
board_led_set_color_battery(LED_GREEN);
break;
default:
/* Other states don't alter LED behavior */
break;
}
#endif
}
static void led_second(void)
{
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
board_led_set_battery();
}
DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT);
|
