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
|
/* Copyright 2021 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 Vell
*/
#include <stdint.h>
#include "cbi.h"
#include "battery.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "ec_commands.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "led_common.h"
#include "task.h"
#include "util.h"
#define BATT_LOW_BCT 10
#define LED_TICK_INTERVAL_MS (500 * MSEC)
#define LED_CYCLE_TIME_MS (2000 * MSEC)
#define LED_TICKS_PER_CYCLE (LED_CYCLE_TIME_MS / LED_TICK_INTERVAL_MS)
#define LED_ON_TIME_MS (1000 * MSEC)
#define LED_ON_TICKS (LED_ON_TIME_MS / LED_TICK_INTERVAL_MS)
const enum ec_led_id supported_led_ids[] = {
EC_LED_ID_LEFT_LED,
EC_LED_ID_RIGHT_LED
};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
enum led_color {
LED_OFF = 0,
LED_AMBER,
LED_WHITE,
LED_COLOR_COUNT /* Number of colors, not a color itself */
};
enum led_port {
RIGHT_PORT = 0,
LEFT_PORT
};
uint8_t bat_led_on;
uint8_t bat_led_off;
static void led_init(void)
{
if (get_board_id() < 2) {
bat_led_on = 0;
bat_led_off = 1;
} else {
bat_led_on = 1;
bat_led_off = 0;
}
}
DECLARE_HOOK(HOOK_INIT, led_init, HOOK_PRIO_DEFAULT);
static void led_set_color_battery(int port, enum led_color color)
{
enum gpio_signal amber_led, white_led;
amber_led = (port == RIGHT_PORT ? GPIO_RIGHT_LED_AMBER_L :
GPIO_LEFT_LED_AMBER_L);
white_led = (port == RIGHT_PORT ? GPIO_RIGHT_LED_WHITE_L :
GPIO_LEFT_LED_WHITE_L);
switch (color) {
case LED_WHITE:
gpio_set_level(white_led, bat_led_on);
gpio_set_level(amber_led, bat_led_off);
break;
case LED_AMBER:
gpio_set_level(white_led, bat_led_off);
gpio_set_level(amber_led, bat_led_on);
break;
case LED_OFF:
gpio_set_level(white_led, bat_led_off);
gpio_set_level(amber_led, bat_led_off);
break;
default:
break;
}
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
memset(brightness_range, '\0',
sizeof(*brightness_range) * EC_LED_COLOR_COUNT);
switch (led_id) {
case EC_LED_ID_LEFT_LED:
brightness_range[EC_LED_COLOR_WHITE] = 1;
brightness_range[EC_LED_COLOR_AMBER] = 1;
break;
case EC_LED_ID_RIGHT_LED:
brightness_range[EC_LED_COLOR_WHITE] = 1;
brightness_range[EC_LED_COLOR_AMBER] = 1;
break;
default:
break;
}
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
switch (led_id) {
case EC_LED_ID_LEFT_LED:
if (brightness[EC_LED_COLOR_WHITE] != 0)
led_set_color_battery(LEFT_PORT, LED_WHITE);
else if (brightness[EC_LED_COLOR_AMBER] != 0)
led_set_color_battery(LEFT_PORT, LED_AMBER);
else
led_set_color_battery(LEFT_PORT, LED_OFF);
break;
case EC_LED_ID_RIGHT_LED:
if (brightness[EC_LED_COLOR_WHITE] != 0)
led_set_color_battery(RIGHT_PORT, LED_WHITE);
else if (brightness[EC_LED_COLOR_AMBER] != 0)
led_set_color_battery(RIGHT_PORT, LED_AMBER);
else
led_set_color_battery(RIGHT_PORT, LED_OFF);
break;
default:
return EC_ERROR_PARAM1;
}
return EC_SUCCESS;
}
/*
* Set active charge port color to the parameter, turn off all others.
* If no port is active (-1), turn off all LEDs.
*/
static void set_active_port_color(enum led_color color)
{
int usbc_port = charge_manager_get_active_charge_port();
int port = 0;
if ((usbc_port == USBC_PORT_C0) || (usbc_port == USBC_PORT_C1))
port = RIGHT_PORT;
else if ((usbc_port == USBC_PORT_C2) || (usbc_port == USBC_PORT_C3))
port = LEFT_PORT;
if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED))
led_set_color_battery(RIGHT_PORT,
(port == RIGHT_PORT) ? color : LED_OFF);
if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED))
led_set_color_battery(LEFT_PORT,
(port == LEFT_PORT) ? color : LED_OFF);
}
static void led_set_battery(void)
{
static unsigned int battery_ticks;
uint32_t chflags = charge_get_flags();
battery_ticks++;
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
/* Always indicate when charging, even in suspend. */
set_active_port_color(LED_AMBER);
break;
case PWR_STATE_DISCHARGE:
/*
* Blinking amber LEDs slowly if battery is lower 10
* percentage.
*/
if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) {
if (charge_get_percent() < BATT_LOW_BCT)
led_set_color_battery(RIGHT_PORT,
(battery_ticks % LED_TICKS_PER_CYCLE
< LED_ON_TICKS) ? LED_AMBER : LED_OFF);
else
led_set_color_battery(RIGHT_PORT, LED_OFF);
}
if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) {
if (charge_get_percent() < BATT_LOW_BCT)
led_set_color_battery(LEFT_PORT,
(battery_ticks % LED_TICKS_PER_CYCLE
< LED_ON_TICKS) ? LED_AMBER : LED_OFF);
else
led_set_color_battery(LEFT_PORT, LED_OFF);
}
break;
case PWR_STATE_ERROR:
if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) {
led_set_color_battery(RIGHT_PORT, (battery_ticks & 0x1)
? LED_AMBER : LED_OFF);
}
if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) {
led_set_color_battery(LEFT_PORT, (battery_ticks & 0x1)
? LED_AMBER : LED_OFF);
}
break;
case PWR_STATE_CHARGE_NEAR_FULL:
set_active_port_color(LED_WHITE);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
set_active_port_color((battery_ticks %
LED_TICKS_PER_CYCLE < LED_ON_TICKS) ?
LED_AMBER : LED_OFF);
else
set_active_port_color(LED_WHITE);
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
void led_task(void *u)
{
uint32_t start_time;
uint32_t task_duration;
while (1) {
start_time = get_time().le.lo;
led_set_battery();
/* Compute time for this iteration */
task_duration = get_time().le.lo - start_time;
/*
* Compute wait time required to for next desired LED tick. If
* the duration exceeds the tick time, then don't sleep.
*/
if (task_duration < LED_TICK_INTERVAL_MS)
usleep(LED_TICK_INTERVAL_MS - task_duration);
}
}
|
