From patchwork Thu Apr 1 06:53:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 414099 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 246A7C43461 for ; Thu, 1 Apr 2021 06:54:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EC0C3610CC for ; Thu, 1 Apr 2021 06:54:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233570AbhDAGxz (ORCPT ); Thu, 1 Apr 2021 02:53:55 -0400 Received: from mga11.intel.com ([192.55.52.93]:28103 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233529AbhDAGxi (ORCPT ); Thu, 1 Apr 2021 02:53:38 -0400 IronPort-SDR: /nb/5bbz0c6QlxMiUHlMWVZM4RSvik5m7WmV3nUQnZURG9ltsoLTJa89WR2DGfyYqpqgz4t1x3 y/DfQiS+U9QA== X-IronPort-AV: E=McAfee;i="6000,8403,9940"; a="188910796" X-IronPort-AV: E=Sophos;i="5.81,296,1610438400"; d="scan'208";a="188910796" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Mar 2021 23:53:36 -0700 IronPort-SDR: H59GP3uF/nZKnEabO8XNUEbku0n/0vmihKP4sT+hfSrhI3Snm0pHxQv9xmy5vADhii+S+ypEq1 inMWLdp6VYqA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,296,1610438400"; d="scan'208";a="517218625" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 31 Mar 2021 23:53:32 -0700 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Alan Stern , Guenter Roeck , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 0/6] usb: Linking ports to their Type-C connectors Date: Thu, 1 Apr 2021 09:53:41 +0300 Message-Id: <20210401065347.4010-1-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, One more version. I used #ifdef when I should have used #if IS_DEFINED(). Thanks Guenter for pointing that out. I'm sending this version right away because of the holidays. I'm not changing anything else except that one fix. v3: cover letter: Third version: ifdefs now in the header files as they should be. v2 cover letter: This is the second version of this series. The "Iterator for ports" patch is now moved to the end of the series (5/6). I'm now using usb_for_each_dev() in usb_for_each_port like Alan suggested, and I'm now using usb_port_peer_mutex to lock the ports while we're dealing with them in __each_hub(). The original cover letter: Adding a simple function typec_link_port() that can be used to create a symlink "connector" that points to the USB Type-C connector of a port. It is used with USB ports initially, but hopefully later also with other things like DisplayPorts. Being able to see which connector is connected to a port is important in general, but it is really important when for example the data or power role of a device needs to swapped. The user probable wants to know which USB device is disconnected if role swap on a USB Type-C connector is executed. Hope these are OK. thanks, Heikki Krogerus (6): usb: typec: Organize the private headers properly usb: typec: Declare the typec_class static usb: typec: Port mapping utility usb: Link the ports to the connectors they are attached to usb: Iterator for ports usb: typec: Link all ports during connector registration Documentation/ABI/testing/sysfs-bus-usb | 9 + drivers/usb/core/port.c | 3 + drivers/usb/core/usb.c | 46 ++++ drivers/usb/typec/Makefile | 2 +- drivers/usb/typec/bus.c | 2 + drivers/usb/typec/bus.h | 19 +- drivers/usb/typec/class.c | 101 +++------ drivers/usb/typec/class.h | 85 ++++++++ drivers/usb/typec/mux.c | 4 +- drivers/usb/typec/mux.h | 21 ++ drivers/usb/typec/port-mapper.c | 277 ++++++++++++++++++++++++ include/linux/usb.h | 9 + include/linux/usb/typec.h | 13 ++ 13 files changed, 495 insertions(+), 96 deletions(-) create mode 100644 drivers/usb/typec/class.h create mode 100644 drivers/usb/typec/mux.h create mode 100644 drivers/usb/typec/port-mapper.c