From patchwork Fri Mar 15 07:38:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 10854179 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0D9FA1575 for ; Fri, 15 Mar 2019 07:41:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EAA662A891 for ; Fri, 15 Mar 2019 07:40:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDE842A890; Fri, 15 Mar 2019 07:40:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 86E392A890 for ; Fri, 15 Mar 2019 07:40:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728339AbfCOHkW (ORCPT ); Fri, 15 Mar 2019 03:40:22 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:25482 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727250AbfCOHkW (ORCPT ); Fri, 15 Mar 2019 03:40:22 -0400 X-UUID: 81badba19c8046d68f8830fffdf33ee2-20190315 X-UUID: 81badba19c8046d68f8830fffdf33ee2-20190315 Received: from mtkcas34.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 196177990; Fri, 15 Mar 2019 15:40:07 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 15 Mar 2019 15:40:06 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 15 Mar 2019 15:40:05 +0800 From: Chunfeng Yun To: Rob Herring , Greg Kroah-Hartman , Heikki Krogerus CC: Mark Rutland , Chunfeng Yun , Matthias Brugger , Adam Thomson , Li Jun , Badhri Jagan Sridharan , Hans de Goede , Andy Shevchenko , Min Guo , , , , , Subject: [PATCH v2 0/6] add USB Type-B GPIO based role switch driver Date: Fri, 15 Mar 2019 15:38:27 +0800 Message-ID: <1552635513-2378-1-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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