From patchwork Wed Apr 7 06:55:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 417976 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 491C5C433ED for ; Wed, 7 Apr 2021 06:55:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0DEAD610C8 for ; Wed, 7 Apr 2021 06:55:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349160AbhDGGzw (ORCPT ); Wed, 7 Apr 2021 02:55:52 -0400 Received: from mga02.intel.com ([134.134.136.20]:62003 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229778AbhDGGzu (ORCPT ); Wed, 7 Apr 2021 02:55:50 -0400 IronPort-SDR: 2ZqEAkFGtaxh35VJs+07rKoZsVV6+T0FEaw558QRncadnC+fvLFQG07RBlYnvCZCeF7RCkfIOf Yn7fRSkxu9sg== X-IronPort-AV: E=McAfee;i="6000,8403,9946"; a="180372030" X-IronPort-AV: E=Sophos;i="5.82,201,1613462400"; d="scan'208";a="180372030" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Apr 2021 23:55:41 -0700 IronPort-SDR: KOWsaMNHIVxtlXZLDWqEImsiHAR9OAkPzHYWuYNtuLV1/Rj0I2nDcErpuATp6R/CgY3Hinl8I1 QKMqGg9aRj4A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,201,1613462400"; d="scan'208";a="519326269" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 06 Apr 2021 23:55:39 -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 v6 0/4] usb: Linking ports to their Type-C connectors Date: Wed, 7 Apr 2021 09:55:51 +0300 Message-Id: <20210407065555.88110-1-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, These are the remaining four patches of the series, now rebased on top of the latest usb-next. No other changes. v5 cover letter: I have to use IS_REACHABLE() instead of IS_ENABLED() also in include/linux/usb.h. Otherwise compilation will fail if the Type-C class is build-in while USB is a module. I'm sorry for re-sending these so fast, immediately after v4. Normally I would wait, but I'll be taking a short vacation starting from right now, and I'm still hoping to get these into v5.13. v4 cover letter: 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 (4): 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/class.c | 12 +- drivers/usb/typec/class.h | 9 + drivers/usb/typec/port-mapper.c | 277 ++++++++++++++++++++++++ include/linux/usb.h | 9 + include/linux/usb/typec.h | 13 ++ 9 files changed, 377 insertions(+), 3 deletions(-) create mode 100644 drivers/usb/typec/port-mapper.c