diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2017-05-26 14:10:22 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-06-19 21:03:30 -0700 |
| commit | cdaca7c97eaefe93ab3a0148a954b2f139f5caad (patch) | |
| tree | 7628f281393c06dbc653732f4b8a71477cdd9378 | |
| parent | 5ce3d325381f2f3bce0be4a83454944271c3b27c (diff) | |
| download | chrome-ec-cdaca7c97eaefe93ab3a0148a954b2f139f5caad.tar.gz | |
Add system_can_boot_ap API
This API checks battery charge level and current power supply
to determine whether the AP has enough power to boot or not.
BUG=b:38462249
BRANCH=none
TEST=make buildall
Change-Id: I489f7ea92f230701b8f18c94d3e698aad90b4a03
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/517272
| -rw-r--r-- | common/system.c | 30 | ||||
| -rw-r--r-- | include/system.h | 8 |
2 files changed, 38 insertions, 0 deletions
diff --git a/common/system.c b/common/system.c index 8e1a123b39..597fc3e59b 100644 --- a/common/system.c +++ b/common/system.c @@ -4,6 +4,8 @@ */ /* System module for Chrome EC : common functions */ +#include "battery.h" +#include "charge_manager.h" #include "clock.h" #include "common.h" #include "console.h" @@ -1290,3 +1292,31 @@ int host_command_reboot(struct host_cmd_handler_args *args) DECLARE_HOST_COMMAND(EC_CMD_REBOOT_EC, host_command_reboot, EC_VER_MASK(0)); + +int system_can_boot_ap(void) +{ + int power_good = 0; + int soc = -1; + int pow = -1; + +#ifdef CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON + /* Require a minimum battery level to power on. If battery isn't + * present, battery_state_of_charge_abs returns false. */ + if (battery_state_of_charge_abs(&soc) == EC_SUCCESS && + soc >= CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) + power_good = 1; +#endif + +#ifdef CONFIG_CHARGER_LIMIT_POWER_THRESH_CHG_MW + if (!power_good) { + pow = charge_manager_get_power_limit_uw() / 1000; + if (pow >= CONFIG_CHARGER_LIMIT_POWER_THRESH_CHG_MW) + power_good = 1; + } +#endif + if (!power_good) + CPRINTS("Not enough power to boot AP: charge=%d power=%d\n", + soc, pow); + + return power_good; +} diff --git a/include/system.h b/include/system.h index f40feb0e37..10c10ccf52 100644 --- a/include/system.h +++ b/include/system.h @@ -529,4 +529,12 @@ static inline void system_print_extended_version_info(void) { } #endif + +/** + * Check if the system can supply enough power to boot AP + * + * @return true if the system is powered enough or false otherwise + */ +int system_can_boot_ap(void); + #endif /* __CROS_EC_SYSTEM_H */ |