[PATCH v2 1/1] usb: dwc3: drd: Add support for usb-conn-gpio based usb-role-switch
From: Alexander Stein <hidden>
Date: 2021-11-25 14:17:26
Subsystem:
designware usb3 drd ip driver, the rest, usb subsystem · Maintainers:
Thinh Nguyen, Linus Torvalds, Greg Kroah-Hartman
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 <redacted> --- 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