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Turn off VDD3 when CPU is off and AC is not connected

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This commit is contained in:
Jeremy Soller 2020-04-04 19:36:01 -06:00
parent ee8e0a2257
commit 825677bfb5
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GPG Key ID: E988B49EE78A7FB1
3 changed files with 16 additions and 4 deletions
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1
src/board/system76/lemp9/gpio.c
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@ -35,6 +35,7 @@ struct Gpio __code VA_EC_EN = GPIO(J, 4);
struct Gpio __code VR_ON = GPIO(H, 4);
struct Gpio __code WLAN_EN = GPIO(G, 1);
struct Gpio __code WLAN_PWR_EN = GPIO(A, 3);
struct Gpio __code XLP_OUT = GPIO(B, 4);
void gpio_init() {
// Enable LPC reset on GPD2

1
src/board/system76/lemp9/include/board/gpio.h
View File

@ -46,5 +46,6 @@ extern struct Gpio __code VA_EC_EN;
extern struct Gpio __code VR_ON;
extern struct Gpio __code WLAN_EN;
extern struct Gpio __code WLAN_PWR_EN;
extern struct Gpio __code XLP_OUT;
#endif // _BOARD_GPIO_H

18
src/board/system76/lemp9/power.c
View File

@ -399,14 +399,14 @@ void power_event(void) {
}
}
static uint32_t last_time = 0;
uint32_t time = time_get();
if (power_state == POWER_STATE_S0) {
// CPU on, green light
gpio_set(&LED_PWR, true);
gpio_set(&LED_ACIN, false);
} else if (power_state == POWER_STATE_S3 || power_state == POWER_STATE_DS3) {
// Suspended, flashing green light
static uint32_t last_time = 0;
uint32_t time = time_get();
if (
(time < last_time) // overflow
||
@ -421,9 +421,19 @@ void power_event(void) {
gpio_set(&LED_PWR, false);
gpio_set(&LED_ACIN, true);
} else {
// CPU off and AC adapter unplugged, no light
// CPU off and AC adapter unplugged, flashing orange light
gpio_set(&LED_PWR, false);
gpio_set(&LED_ACIN, false);
if (
(time < last_time) // overflow
||
(time >= (last_time + 1000)) // timeout
) {
gpio_set(&LED_ACIN, !gpio_get(&LED_ACIN));
last_time = time;
}
// Attempt to kill VDD3
gpio_set(&XLP_OUT, false);
}
#endif // DEEP_SX
}