Because the USB Connector is introduced and the requirement of usb-connector.txt binding, the old way using extcon to support USB Dual-Role switch is now deprecated, meanwhile there is no available common driver when use Type-B connector. This patch series introduce a Type-B connector driver and try to replace the function provided by extcon-usb-gpio driver. The main purpose of the patches is also to solve the Type-B connector problem encountered in [1]. [1]: https://patchwork.kernel.org/patch/10819377/ v2 changes: 1. make binding clear, and add a extra compatible suggested by Hans Chunfeng Yun (6): dt-bindings: connector: add optional properties for Type-B dt-bindings: usb: add binding for Type-B dual role switch by GPIO dt-bindings: usb: mtu3: add properties about USB Role Switch usb: roles: add API to get usb_role_switch by node usb: roles: add driver of USB Type-B role switch by GPIO usb: mtu3: register a USB Role Switch for dual role mode .../bindings/connector/usb-connector.txt | 9 + .../devicetree/bindings/usb/mediatek,mtu3.txt | 10 +- .../bindings/usb/typeb-switch-gpio.txt | 26 ++ drivers/usb/mtu3/mtu3.h | 5 + drivers/usb/mtu3/mtu3_dr.c | 50 ++- drivers/usb/mtu3/mtu3_plat.c | 3 +- drivers/usb/roles/Kconfig | 14 + drivers/usb/roles/Makefile | 1 + drivers/usb/roles/class.c | 30 ++ drivers/usb/roles/typeb-switch-gpio.c | 285 ++++++++++++++++++ include/linux/usb/role.h | 1 + 11 files changed, 428 insertions(+), 6 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/typeb-switch-gpio.txt create mode 100644 drivers/usb/roles/typeb-switch-gpio.c -- 2.20.1
