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| author | Devin Lu <devin.lu@quantatw.com> | 2020-03-16 13:18:57 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-03-25 20:28:53 +0000 |
| commit | b70f61a519e67ef4f19d6f3dd0b9c9862b02eef1 (patch) | |
| tree | fb2821532051e344a05f63796d5e0dfaa1dc8da7 | |
| parent | 11b0f59e33b4683225232c1ee809e78a89cd782c (diff) | |
| download | chrome-ec-b70f61a519e67ef4f19d6f3dd0b9c9862b02eef1.tar.gz | |
dratini: Reduce input voltage to 5V when battery full
Apply CL:1401018 for dratini.
To reduce power consumption, reduce USB-C PD input voltage to 5V
when the battery is full and the system is off (S5/G3).
BUG=b:149890873
BRANCH=firmware-hatch-12672.B
TEST=battery 90%: chgsup shows 15V or 20V,
when battery full: chgsup shows 5V,
power on AP: chgsup shows 15V or 20V
Change-Id: Ifa013d8f696f69aeba587fa45c72413a42445728
Signed-off-by: Devin Lu <Devin.Lu@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2104813
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
| -rw-r--r-- | board/dratini/battery.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/board/dratini/battery.c b/board/dratini/battery.c index ee5db0f30c..dafd0c9425 100644 --- a/board/dratini/battery.c +++ b/board/dratini/battery.c @@ -6,8 +6,11 @@ */ #include "battery_fuel_gauge.h" +#include "charge_state.h" +#include "chipset.h" #include "common.h" -#include "util.h" +#include "hooks.h" +#include "usb_pd.h" /* * Battery info for all Dratini/Dragonair battery types. Note that the fields @@ -93,3 +96,27 @@ const struct board_batt_params board_battery_info[] = { BUILD_ASSERT(ARRAY_SIZE(board_battery_info) == BATTERY_TYPE_COUNT); const enum battery_type DEFAULT_BATTERY_TYPE = BATTERY_SIMPLO_COS; + +/* Lower our input voltage to 5V in S5/G3 when battery is full. */ +static void reduce_input_voltage_when_full(void) +{ + int max_pd_voltage_mv; + int port; + + if (charge_get_percent() == 100 && + chipset_in_or_transitioning_to_state(CHIPSET_STATE_ANY_OFF)) + max_pd_voltage_mv = 5000; + else + max_pd_voltage_mv = PD_MAX_VOLTAGE_MV; + + if (pd_get_max_voltage() != max_pd_voltage_mv) { + for (port = 0; port < CONFIG_USB_PD_PORT_MAX_COUNT; port++) + pd_set_external_voltage_limit(port, max_pd_voltage_mv); + } +} +DECLARE_HOOK(HOOK_BATTERY_SOC_CHANGE, reduce_input_voltage_when_full, + HOOK_PRIO_DEFAULT); +DECLARE_HOOK(HOOK_CHIPSET_STARTUP, reduce_input_voltage_when_full, + HOOK_PRIO_DEFAULT); +DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, reduce_input_voltage_when_full, + HOOK_PRIO_DEFAULT); |