[PATCH 3/4] platform/chrome: cros_ec_typec: Configure muxes at start of port update

[Prashant Malani]

There are situations where the mux state reported by the Embedded
Controller (EC), might lag the partner "connected" state. So, the mux
state might still suggest that a partner is connected, while the PD
"connected" state, being in Try.SNK (for example) suggests that the
partner is disconnected.

In such a scenario, we will end up sending a disconnect command to the
mux driver, followed by a connect command, since the mux is configured
later. Avoid this by configuring the mux before
registering/disconnecting a partner.

Signed-off-by: Prashant Malani <pmalani@xxxxxxxxxxxx>
---
 drivers/platform/chrome/cros_ec_typec.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index 671d3569faf6..164c82f537dd 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -965,6 +965,11 @@ static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
 	if (ret < 0)
 		return ret;
 
+	/* Update the switches if they exist, according to requested state */
+	ret = cros_typec_configure_mux(typec, port_num, &resp);
+	if (ret)
+		dev_warn(typec->dev, "Configure muxes failed, err = %d\n", ret);
+
 	dev_dbg(typec->dev, "Enabled %d: 0x%hhx\n", port_num, resp.enabled);
 	dev_dbg(typec->dev, "Role %d: 0x%hhx\n", port_num, resp.role);
 	dev_dbg(typec->dev, "Polarity %d: 0x%hhx\n", port_num, resp.polarity);
@@ -980,11 +985,6 @@ static int cros_typec_port_update(struct cros_typec_data *typec, int port_num)
 	if (typec->typec_cmd_supported)
 		cros_typec_handle_status(typec, port_num);
 
-	/* Update the switches if they exist, according to requested state */
-	ret = cros_typec_configure_mux(typec, port_num, &resp);
-	if (ret)
-		dev_warn(typec->dev, "Configure muxes failed, err = %d\n", ret);
-
 	return ret;
 }
 
-- 
2.35.0.263.gb82422642f-goog