linux-kernel - [PATCH v2 3/4] usb: typec: ucsi: Delay alternate mode discovery

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Date: Wed, 24 Apr 2024 01:48:20 +0000
From: Jameson Thies <jthies@...gle.com>
To: heikki.krogerus@...ux.intel.com, linux-usb@...r.kernel.org
Cc: jthies@...gle.com, pmalani@...omium.org, 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, Benson Leung <bleung@...omium.org>
Subject: [PATCH v2 3/4] usb: typec: ucsi: Delay alternate mode discovery

Delay the ucsi_check_altmodes task to be inline with surrounding partner
tasks. This allows partner, cable and identity discovery to complete
before alternate mode registration. With that order, alternate mode
discovery can be used to indicate the ucsi driver has completed
discovery.

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Reviewed-by: Benson Leung <bleung@...omium.org>
Signed-off-by: Jameson Thies <jthies@...gle.com>
---
Changes in V2:
- None.

 drivers/usb/typec/ucsi/ucsi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c
index f3b413f94fd28..f167891e3f79d 100644
--- a/drivers/usb/typec/ucsi/ucsi.c
+++ b/drivers/usb/typec/ucsi/ucsi.c
@@ -966,7 +966,7 @@ static void ucsi_pwr_opmode_change(struct ucsi_connector *con)
 		con->rdo = con->status.request_data_obj;
 		typec_set_pwr_opmode(con->port, TYPEC_PWR_MODE_PD);
 		ucsi_partner_task(con, ucsi_get_src_pdos, 30, 0);
-		ucsi_partner_task(con, ucsi_check_altmodes, 30, 0);
+		ucsi_partner_task(con, ucsi_check_altmodes, 30, HZ);
 		ucsi_partner_task(con, ucsi_register_partner_pdos, 1, HZ);
 		break;
 	case UCSI_CONSTAT_PWR_OPMODE_TYPEC1_5:
@@ -1250,7 +1250,7 @@ static void ucsi_handle_connector_change(struct work_struct *work)
 	}
 
 	if (con->status.change & UCSI_CONSTAT_CAM_CHANGE)
-		ucsi_partner_task(con, ucsi_check_altmodes, 1, 0);
+		ucsi_partner_task(con, ucsi_check_altmodes, 1, HZ);
 
 out_unlock:
 	mutex_unlock(&con->lock);
-- 
2.44.0.769.g3c40516874-goog