[PATCH v2 1/1] usb: dwc3: drd: Add support for usb-conn-gpio based usb-role-switch

[Alexander Stein <alexander.stein@ew.tq-group.com>]

usb-conn-gpio devices are a subnode of the USB interface controller, which
needs to be populated.
This allows having a non-type-c connector providing dual-role.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
Changes in v2:
* Added missing variable declaration

 drivers/usb/dwc3/drd.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c
index d7f76835137f..8b5ac689b8da 100644
--- a/drivers/usb/dwc3/drd.c
+++ b/drivers/usb/dwc3/drd.c
@@ -9,6 +9,7 @@
 
 #include <linux/extcon.h>
 #include <linux/of_graph.h>
+#include "linux/of_platform.h"
 #include <linux/platform_device.h>
 #include <linux/property.h>
 
@@ -542,6 +543,7 @@ static int dwc3_setup_role_switch(struct dwc3 *dwc)
 {
 	struct usb_role_switch_desc dwc3_role_switch = {NULL};
 	u32 mode;
+	int ret;
 
 	dwc->role_switch_default_mode = usb_get_role_switch_default_mode(dwc->dev);
 	if (dwc->role_switch_default_mode == USB_DR_MODE_HOST) {
@@ -559,6 +561,13 @@ static int dwc3_setup_role_switch(struct dwc3 *dwc)
 	if (IS_ERR(dwc->role_sw))
 		return PTR_ERR(dwc->role_sw);
 
+	/* populate connector entry */
+	ret = devm_of_platform_populate(dwc->dev);
+	if (ret) {
+		dev_err(dwc->dev, "DWC3 platform devices creation failed: %i\n", ret);
+		return ret;
+	}
+
 	dwc3_set_mode(dwc, mode);
 	return 0;
 }
-- 
2.25.1