diff options
Diffstat (limited to 'power/sdm845.c')
| -rw-r--r-- | power/sdm845.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/power/sdm845.c b/power/sdm845.c index 24429c1f37..f6a22c54ae 100644 --- a/power/sdm845.c +++ b/power/sdm845.c @@ -22,6 +22,7 @@ * - If POWER_GOOD is dropped by the AP, then we power the AP off */ +#include "charge_state.h" #include "chipset.h" #include "common.h" #include "gpio.h" @@ -60,6 +61,12 @@ /* Wait for polling the AP on signal */ #define PMIC_POWER_AP_WAIT (1 * MSEC) +/* The timeout of the check if the system can boot AP */ +#define CAN_BOOT_AP_CHECK_TIMEOUT (500 * MSEC) + +/* Wait for polling if the system can boot AP */ +#define CAN_BOOT_AP_CHECK_WAIT (100 * MSEC) + /* Delay between power-on the system and power-on the PMIC */ #define SYSTEM_POWER_ON_DELAY (10 * MSEC) @@ -389,22 +396,66 @@ static void power_off(void) /* Wait longer to ensure the PMIC/AP totally off */ usleep(SYSTEM_POWER_OFF_DELAY); + /* Turn off the 5V rail. */ +#ifdef CONFIG_POWER_PP5000_CONTROL + power_5v_enable(task_get_current(), 0); +#else /* !defined(CONFIG_POWER_PP5000_CONTROL) */ + gpio_set_level(GPIO_EN_PP5000, 0); +#endif /* defined(CONFIG_POWER_PP5000_CONTROL) */ + lid_opened = 0; enable_sleep(SLEEP_MASK_AP_RUN); CPRINTS("power shutdown complete"); } /** + * Check if the power is enough to boot the AP. + */ +static int power_is_enough(void) +{ + timestamp_t poll_deadline; + + /* If powered by adapter only, wait a while for PD negoiation. */ + poll_deadline = get_time(); + poll_deadline.val += CAN_BOOT_AP_CHECK_TIMEOUT; + + /* + * Wait for PD negotiation. If a system with drained battery, don't + * waste the time and exit the loop. + */ + while (!system_can_boot_ap() && !charge_want_shutdown() && + get_time().val < poll_deadline.val) { + usleep(CAN_BOOT_AP_CHECK_WAIT); + } + + return system_can_boot_ap() && !charge_want_shutdown(); +} + +/** * Power on the AP */ static void power_on(void) { /* + * If no enough power, return and the state machine will transition + * back to S5. + */ + if (!power_is_enough()) + return; + + /* * When power_on() is called, we are at S5S3. Initialize components * to ready state before AP is up. */ hook_notify(HOOK_CHIPSET_PRE_INIT); + /* Enable the 5V rail. */ +#ifdef CONFIG_POWER_PP5000_CONTROL + power_5v_enable(task_get_current(), 1); +#else /* !defined(CONFIG_POWER_PP5000_CONTROL) */ + gpio_set_level(GPIO_EN_PP5000, 1); +#endif /* defined(CONFIG_POWER_PP5000_CONTROL) */ + set_system_power(1); usleep(SYSTEM_POWER_ON_DELAY); set_pmic_pwron(1); |