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From:   "Angus Ainslie (Purism)" <angus@akkea.ca>
To:     Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        "Angus Ainslie (Purism)" <angus@akkea.ca>
Subject: [PATCH] usb: typec: don't disable sink or source on initialization
Date:   Thu,  6 Sep 2018 13:26:44 -0600
Message-Id: <20180906192644.24587-1-angus@akkea.ca>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

If the board is being powered by USB disabling the source and sink
can remove power from the board. Default to source and sink enabled.

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
---
 drivers/usb/typec/tcpm.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c
index ca7bedb46f7f..a1b819cf31da 100644
--- a/drivers/usb/typec/tcpm.c
+++ b/drivers/usb/typec/tcpm.c
@@ -2462,9 +2462,11 @@ static int tcpm_init_vbus(struct tcpm_port *port)
 {
 	int ret;
 
-	ret = port->tcpc->set_vbus(port->tcpc, false, false);
-	port->vbus_source = false;
-	port->vbus_charge = false;
+	/* default to source and sink enabled in case USB is our only power
+	 * source */
+	ret = port->tcpc->set_vbus(port->tcpc, true, true);
+	port->vbus_source = true;
+	port->vbus_charge = true;
 	return ret;
 }
 
-- 
2.17.1