linux-kernel - [PATCH v1 2/4] usb: typec: ucsi: Add USB PD DRP to USB type

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Message-ID: <20240717004949.3638557-3-jthies@google.com>
Date: Wed, 17 Jul 2024 00:49:47 +0000
From: Jameson Thies <jthies@...gle.com>
To: heikki.krogerus@...ux.intel.com, linux-usb@...r.kernel.org
Cc: jthies@...gle.com, bleung@...gle.com, abhishekpandit@...omium.org, 
	andersson@...nel.org, dmitry.baryshkov@...aro.org, 
	fabrice.gasnier@...s.st.com, gregkh@...uxfoundation.org, hdegoede@...hat.com, 
	neil.armstrong@...aro.org, rajaram.regupathy@...el.com, 
	saranya.gopal@...el.com, linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/4] usb: typec: ucsi: Add USB PD DRP to USB type

Add POWER_SUPPLY_USB_TYPE_PD_DRP as a USB type in the UCSI power supply
driver. The DRP type is set when the partner supports USB PD and offers
both source and sink PDOs.

Signed-off-by: Jameson Thies <jthies@...gle.com>
---
 drivers/usb/typec/ucsi/psy.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/ucsi/psy.c b/drivers/usb/typec/ucsi/psy.c
index d0b52cee41d2..45113e013696 100644
--- a/drivers/usb/typec/ucsi/psy.c
+++ b/drivers/usb/typec/ucsi/psy.c
@@ -204,8 +204,12 @@ static int ucsi_psy_get_usb_type(struct ucsi_connector *con,
 
 	val->intval = POWER_SUPPLY_USB_TYPE_C;
 	if (flags & UCSI_CONSTAT_CONNECTED &&
-	    UCSI_CONSTAT_PWR_OPMODE(flags) == UCSI_CONSTAT_PWR_OPMODE_PD)
-		val->intval = POWER_SUPPLY_USB_TYPE_PD;
+	    UCSI_CONSTAT_PWR_OPMODE(flags) == UCSI_CONSTAT_PWR_OPMODE_PD) {
+		if (!con->partner_source_caps || !con->partner_sink_caps)
+			val->intval = POWER_SUPPLY_USB_TYPE_PD;
+		else
+			val->intval = POWER_SUPPLY_USB_TYPE_PD_DRP;
+	}
 
 	return 0;
 }
@@ -275,6 +279,7 @@ static enum power_supply_usb_type ucsi_psy_usb_types[] = {
 	POWER_SUPPLY_USB_TYPE_C,
 	POWER_SUPPLY_USB_TYPE_PD,
 	POWER_SUPPLY_USB_TYPE_PD_PPS,
+	POWER_SUPPLY_USB_TYPE_PD_DRP,
 };
 
 int ucsi_register_port_psy(struct ucsi_connector *con)
-- 
2.45.2.1089.g2a221341d9-goog