linux-kernel - [PATCH v1] usb: typec: altmodes/displayport: send configure message on sop'

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Date: Fri, 23 Feb 2024 00:23:03 +0000
From: RD Babiera <rdbabiera@...gle.com>
To: rdbabiera@...gle.com, heikki.krogerus@...ux.intel.com, 
	gregkh@...uxfoundation.org
Cc: badhri@...gle.com, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] usb: typec: altmodes/displayport: send configure message
 on sop'

When the port is setting the pin configuration when no configuration is
chosen, the DisplayPort driver will not send Configure to the cable plug
if it's available. Add transition to DP_STATE_CONFIGURE_PRIME.

Fixes: 71ba4fe56656 ("usb: typec: altmodes/displayport: add SOP' support")
Signed-off-by: RD Babiera <rdbabiera@...gle.com>
---
 drivers/usb/typec/altmodes/displayport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index 5a80776c7255..867f9796f8a8 100644
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -164,7 +164,8 @@ static int dp_altmode_status_update(struct dp_altmode *dp)
 	} else if (!(con & DP_CONF_CURRENTLY(dp->data.conf))) {
 		ret = dp_altmode_configure(dp, con);
 		if (!ret) {
-			dp->state = DP_STATE_CONFIGURE;
+			dp->state = dp->plug_prime ? DP_STATE_CONFIGURE_PRIME :
+						     DP_STATE_CONFIGURE;
 			if (dp->hpd != hpd) {
 				dp->hpd = hpd;
 				dp->pending_hpd = true;

base-commit: 3bf0514dc6f36f81ee11b1becd977cb87b4c90c6
-- 
2.44.0.rc0.258.g7320e95886-goog