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ec/google/chromeec: Add API to check if a USB PD charger is attached

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This change introduces a new API, `google_chromeec_is_usb_pd_attached()`
which checks the current status of the USB-C port and returns whether a
USB Power Delivery (PD) charger is currently connected.

This API is useful for determining if the system is currently being
powered by a PD charger.

BUG=b:377798581
TEST=Able to read the PD status correctly while booting google/fatcat.

Change-Id: I47c934ee8a7563d4ba5124bff5613e61dd66e923
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85743
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
This commit is contained in:
Subrata Banik 2024-12-23 11:19:21 +05:30
commit 56370d0283
2 changed files with 22 additions and 0 deletions
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19
src/ec/google/chromeec/ec.c
View file

@ -966,6 +966,25 @@ int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type,
return 0;
}
/*
* This API checks the current status of the USB-C port and returns
* whether a USB Power Delivery (PD) charger is currently connected.
*/
bool google_chromeec_is_usb_pd_attached(void)
{
const struct ec_params_usb_pd_power_info params = {
.port = PD_POWER_CHARGING_PORT,
};
struct ec_response_usb_pd_power_info resp = {};
int rv;
rv = ec_cmd_usb_pd_power_info(PLAT_EC, &params, &resp);
if (rv != 0)
return false;
return resp.type == USB_CHG_TYPE_PD;
}
int google_chromeec_override_dedicated_charger_limit(uint16_t current_lim,
uint16_t voltage_lim)
{

3
src/ec/google/chromeec/ec.h
View file

@ -137,6 +137,9 @@ int google_chromeec_set_usb_pd_role(uint8_t port, enum usb_pd_control_role role)
int google_chromeec_get_usb_pd_power_info(enum usb_chg_type *type,
uint16_t *current_max, uint16_t *voltage_max);
/* Check if a USB Power Delivery (PD) charger is attached */
bool google_chromeec_is_usb_pd_attached(void);
/*
* Set max current and voltage of a dedicated charger.
*