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ec/google/chromeec: Add interface for offmode heartbeat command

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Implement google_chromeec_offmode_heartbeat() to wrap the
EC_CMD_ENABLE_OFFMODE_HEARTBEAT host command.

This allows the AP to signal the EC to maintain the power state
required for off-mode UI (such as the charging applet) during
shutdown or low-power transitions.

BUG=b:439819922
BRANCH=none
TEST=Build and verify that the charger applet can successfully
call this function to enable heartbeat signaling.

Change-Id: Ic2ed464bf454e614a098ee5bbbb662adc9d79144
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91484
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
This commit is contained in:
Subrata Banik 2026-03-01 11:03:09 +05:30
commit a1dd5f05b0
2 changed files with 11 additions and 0 deletions
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9
src/ec/google/chromeec/ec.c
View file

@ -795,6 +795,15 @@ int rtc_get(struct rtc_time *time)
}
#endif
int google_chromeec_offmode_heartbeat(void)
{
struct chromeec_command cmd = {
.cmd_code = EC_CMD_ENABLE_OFFMODE_HEARTBEAT,
};
return google_chromeec_command(&cmd);
}
int google_chromeec_reboot(enum ec_reboot_cmd type, uint8_t flags)
{
const struct ec_params_reboot_ec params = {

2
src/ec/google/chromeec/ec.h
View file

@ -110,6 +110,8 @@ int google_chromeec_reboot(enum ec_reboot_cmd type, uint8_t flags);
void google_chromeec_ap_poweroff(void);
int google_chromeec_offmode_heartbeat(void);
/**
* Get data from Cros Board Info
*