linux-kernel - [PATCH 2/6] usb: typec: ucsi: psy: Add support for DRP USB type

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Message-ID: <20251007000007.3724229-3-jthies@google.com>
Date: Tue,  7 Oct 2025 00:00:03 +0000
From: Jameson Thies <jthies@...gle.com>
To: heikki.krogerus@...ux.intel.com, linux-usb@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Cc: jthies@...gle.com, dmitry.baryshkov@....qualcomm.com, bleung@...omium.org, 
	gregkh@...uxfoundation.org, akuchynski@...omium.org, 
	abhishekpandit@...omium.org, sebastian.reichel@...labora.com, 
	linux-pm@...r.kernel.org
Subject: [PATCH 2/6] usb: typec: ucsi: psy: Add support for DRP USB type

The USB Type registered with the power supply class is based on the
current power operation mode of the port. When the port is using USB
PD and is connected to a DRP partner, report that the power supply's
USB type is USB PD DRP.

Signed-off-by: Jameson Thies <jthies@...gle.com>
---
 drivers/usb/typec/ucsi/psy.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/ucsi/psy.c b/drivers/usb/typec/ucsi/psy.c
index 2b0225821502..985a90d3f898 100644
--- a/drivers/usb/typec/ucsi/psy.c
+++ b/drivers/usb/typec/ucsi/psy.c
@@ -209,8 +209,16 @@ static int ucsi_psy_get_usb_type(struct ucsi_connector *con,
 {
 	val->intval = POWER_SUPPLY_USB_TYPE_C;
 	if (UCSI_CONSTAT(con, CONNECTED) &&
-	    UCSI_CONSTAT(con, PWR_OPMODE) == UCSI_CONSTAT_PWR_OPMODE_PD)
+	    UCSI_CONSTAT(con, PWR_OPMODE) == UCSI_CONSTAT_PWR_OPMODE_PD) {
+		for (int i = 0; i < con->num_pdos; i++) {
+			if (pdo_type(con->src_pdos[i]) == PDO_TYPE_FIXED &&
+			    con->src_pdos[i] & PDO_FIXED_DUAL_ROLE) {
+				val->intval = POWER_SUPPLY_USB_TYPE_PD_DRP;
+				return 0;
+			}
+		}
 		val->intval = POWER_SUPPLY_USB_TYPE_PD;
+	}
 
 	return 0;
 }
-- 
2.51.0.618.g983fd99d29-goog