[coreboot-gerrit] [S] Change in coreboot[main]: ec/google/chromeec: Add API to check if a USB PD charger is attached

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/85743?usp=email )

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

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

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 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85743
Tested-by: build bot (Jenkins) 
Reviewed-by: Jérémy Compostella 
---
M src/ec/google/chromeec/ec.c
M src/ec/google/chromeec/ec.h
2 files changed, 22 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Jérémy Compostella: Looks good to me, approved

diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c
index af5c235..4c1bbe7 100644
--- a/src/ec/google/chromeec/ec.c
+++ b/src/ec/google/chromeec/ec.c
@@ -966,6 +966,25 @@
    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)
 {
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h
index 31c7671..cdea70f 100644
--- a/src/ec/google/chromeec/ec.h
+++ b/src/ec/google/chromeec/ec.h
@@ -137,6 +137,9 @@
 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.
  *