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
|
/* Copyright 2018 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Power and battery LED state control
*/
#include "battery.h"
#include "charge_state.h"
#include "chipset.h"
#include "console.h"
#include "ec_commands.h"
#include "extpower.h"
#include "hooks.h"
#include "led_common.h"
#include "led_onoff_states.h"
#define CPRINTS(format, args...) cprints(CC_GPIO, format, ## args)
static enum led_states led_get_state(void)
{
int charge_lvl;
enum led_states new_state = LED_NUM_STATES;
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
/* Get percent charge */
charge_lvl = charge_get_percent();
/* Determine which charge state to use */
if (charge_lvl < led_charge_lvl_1)
new_state = STATE_CHARGING_LVL_1;
else if (charge_lvl < led_charge_lvl_2)
new_state = STATE_CHARGING_LVL_2;
else
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
new_state = STATE_CHARGING_FULL_S5;
else
new_state = STATE_CHARGING_FULL_CHARGE;
break;
case PWR_STATE_DISCHARGE_FULL:
if (extpower_is_present()) {
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
new_state = STATE_CHARGING_FULL_S5;
else
new_state = STATE_CHARGING_FULL_CHARGE;
break;
}
/* Intentional fall-through */
case PWR_STATE_DISCHARGE /* and PWR_STATE_DISCHARGE_FULL */:
if (chipset_in_state(CHIPSET_STATE_ON)) {
#ifdef CONFIG_LED_ONOFF_STATES_BAT_LOW
if (charge_get_percent() <
CONFIG_LED_ONOFF_STATES_BAT_LOW)
new_state = STATE_DISCHARGE_S0_BAT_LOW;
else
#endif
new_state = STATE_DISCHARGE_S0;
} else if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND))
new_state = STATE_DISCHARGE_S3;
else
new_state = STATE_DISCHARGE_S5;
break;
case PWR_STATE_ERROR:
new_state = STATE_BATTERY_ERROR;
break;
case PWR_STATE_CHARGE_NEAR_FULL:
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
new_state = STATE_CHARGING_FULL_S5;
else
new_state = STATE_CHARGING_FULL_CHARGE;
break;
case PWR_STATE_IDLE: /* External power connected in IDLE */
if (charge_get_flags() & CHARGE_FLAG_FORCE_IDLE)
new_state = STATE_FACTORY_TEST;
else
new_state = STATE_DISCHARGE_S0;
break;
default:
/* Other states don't alter LED behavior */
break;
}
return new_state;
}
static void led_update_battery(void)
{
static uint8_t ticks, period;
static int led_state = LED_NUM_STATES;
int phase;
enum led_states desired_state = led_get_state();
/*
* We always need to check the current state since the value could
* have been manually overwritten. If we're in a new valid state,
* update our ticks and period info. If our new state isn't defined,
* continue using the previous one.
*/
if (desired_state != led_state && desired_state < LED_NUM_STATES) {
/*
* Allow optional CHARGING_FULL_S5 state to fall back to
* FULL_CHARGE if not defined.
*/
if (desired_state == STATE_CHARGING_FULL_S5 &&
led_bat_state_table[desired_state][LED_PHASE_0].time == 0)
desired_state = STATE_CHARGING_FULL_CHARGE;
/* State is changing */
led_state = desired_state;
/* Reset ticks and period when state changes */
ticks = 0;
period = led_bat_state_table[led_state][LED_PHASE_0].time +
led_bat_state_table[led_state][LED_PHASE_1].time;
}
/* If this state is undefined, turn the LED off */
if (period == 0) {
CPRINTS("Undefined LED behavior for battery state %d,"
"turning off LED", led_state);
led_set_color_battery(LED_OFF);
return;
}
/*
* Determine which phase of the state table to use. The phase is
* determined if it falls within first phase time duration.
*/
phase = ticks < led_bat_state_table[led_state][LED_PHASE_0].time ?
0 : 1;
ticks = (ticks + 1) % period;
/* Set the color for the given state and phase */
led_set_color_battery(led_bat_state_table[led_state][phase].color);
}
#ifdef CONFIG_LED_POWER_LED
static enum pwr_led_states pwr_led_get_state(void)
{
if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND)) {
if (extpower_is_present())
return PWR_LED_STATE_SUSPEND_AC;
else
return PWR_LED_STATE_SUSPEND_NO_AC;
} else if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) {
return PWR_LED_STATE_OFF;
} else if (chipset_in_state(CHIPSET_STATE_ON)) {
return PWR_LED_STATE_ON;
}
return PWR_LED_NUM_STATES;
}
static void led_update_power(void)
{
static uint8_t ticks, period;
static enum pwr_led_states led_state = PWR_LED_NUM_STATES;
int phase;
enum pwr_led_states desired_state = pwr_led_get_state();
/*
* If we're in a new valid state, update our ticks and period info.
* Otherwise, continue to use old state
*/
if (desired_state != led_state && desired_state < PWR_LED_NUM_STATES) {
/* State is changing */
led_state = desired_state;
/* Reset ticks and period when state changes */
ticks = 0;
period = led_pwr_state_table[led_state][LED_PHASE_0].time +
led_pwr_state_table[led_state][LED_PHASE_1].time;
}
/* If this state is undefined, turn the LED off */
if (period == 0) {
CPRINTS("Undefined LED behavior for power state %d,"
"turning off LED", led_state);
led_set_color_power(LED_OFF);
return;
}
/*
* Determine which phase of the state table to use. The phase is
* determined if it falls within first phase time duration.
*/
phase = ticks < led_pwr_state_table[led_state][LED_PHASE_0].time ?
0 : 1;
ticks = (ticks + 1) % period;
/* Set the color for the given state and phase */
led_set_color_power(led_pwr_state_table[led_state][phase].color);
}
#endif
static void led_init(void)
{
/* If battery LED is enabled, set it to "off" to start with */
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
led_set_color_battery(LED_OFF);
/* If power LED is enabled, set it to "off" to start with */
#ifdef CONFIG_LED_POWER_LED
if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
led_set_color_power(LED_OFF);
#endif /* CONFIG_LED_POWER_LED */
}
DECLARE_HOOK(HOOK_INIT, led_init, HOOK_PRIO_DEFAULT);
/* Called by hook task every hook tick (200 msec) */
static void led_update(void)
{
/*
* If battery LED is enabled, set its state based on our power and
* charge
*/
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
led_update_battery();
#ifdef CONFIG_LED_POWER_LED
if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED))
led_update_power();
#endif
}
DECLARE_HOOK(HOOK_TICK, led_update, HOOK_PRIO_DEFAULT);
|
