linux-kernel - [PATCH 2/2] usb: typec: ucsi: Enable UCSI v2.0 notifications

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Date: Fri, 24 May 2024 11:58:21 +0100
From: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
To: heikki.krogerus@...ux.intel.com,
	gregkh@...uxfoundation.org,
	dmitry.baryshkov@...aro.org,
	jthies@...gle.com,
	bleung@...omium.org,
	abhishekpandit@...omium.org,
	saranya.gopal@...el.com,
	lk@...e.de,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	pmalani@...omium.org
Cc: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
Subject: [PATCH 2/2] usb: typec: ucsi: Enable UCSI v2.0 notifications

UCSI version 2.0 and above define new PPM notifications. Update the
logic to determine which notifications to enable taking into account
these changes.

Signed-off-by: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
---
 drivers/usb/typec/ucsi/ucsi.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index cb52e7b0a2c5..0cc1c49da4a0 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -1664,7 +1664,7 @@ static int ucsi_register_port(struct ucsi *ucsi, struct ucsi_connector *con)
 
 static u64 ucsi_get_supported_notifications(struct ucsi *ucsi)
 {
-	u8 features = ucsi->cap.features;
+	u16 features = ucsi->cap.features;
 	u64 ntfy = UCSI_ENABLE_NTFY_ALL;
 
 	if (!(features & UCSI_CAP_ALT_MODE_DETAILS))
@@ -1680,6 +1680,23 @@ static u64 ucsi_get_supported_notifications(struct ucsi *ucsi)
 	if (!(features & UCSI_CAP_PD_RESET))
 		ntfy &= ~UCSI_ENABLE_NTFY_PD_RESET_COMPLETE;
 
+	if (ucsi->version <= UCSI_VERSION_1_2)
+		return ntfy;
+
+	ntfy |= UCSI_ENABLE_NTFY_SINK_PATH_STS_CHANGE;
+
+	if (features & UCSI_CAP_GET_ATTENTION_VDO)
+		ntfy |= UCSI_ENABLE_NTFY_ATTENTION;
+
+	if (features & UCSI_CAP_FW_UPDATE_REQUEST)
+		ntfy |= UCSI_ENABLE_NTFY_LPM_FW_UPDATE_REQ;
+
+	if (features & UCSI_CAP_SECURITY_REQUEST)
+		ntfy |= UCSI_ENABLE_NTFY_SECURITY_REQ_PARTNER;
+
+	if (features & UCSI_CAP_SET_RETIMER_MODE)
+		ntfy |= UCSI_ENABLE_NTFY_SET_RETIMER_MODE;
+
 	return ntfy;
 }
 
-- 
2.45.1