From patchwork Tue Aug 22 13:32:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 716038 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 596E8EE4996 for ; Tue, 22 Aug 2023 13:32:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233274AbjHVNcL (ORCPT ); Tue, 22 Aug 2023 09:32:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230029AbjHVNcL (ORCPT ); Tue, 22 Aug 2023 09:32:11 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80E2FA1 for ; Tue, 22 Aug 2023 06:32:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692711129; x=1724247129; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=QVhfhs/u7r5FOc588BfoBuVU5dUt1/3rhvcZIU1nKe0=; b=FIrAMjHBGc1/ALnDRpY82K0V6k2AVGQsx+1HAhO5W4lGjz1mC/m/4h6c BJIEZvqJCtrwtS5Vypc7TwweXVOXDuFWooFLfP0ud2PvHwCOh9JNDpVBN +j4cikik4qSKXzr/EBL82uvITkohfuSEKHU2yK3eEE5vH1uNtSz5JbgG2 LeXdp00a+Ieo86VBz1R0dVshOIAOBtoresbB5zmnN0ieup7L9/u1SxUKs K2qUgEHoFij+Xp0zWoy/qSHqTyJdP2pvUMUryXW4oF0afB5hZd0cB1chi 6WNFvOOFfHoGuKU43D0n4Deo9+JYoBVhdrHl+s3ZBkQQ/I2QlQuLCkq4l Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10809"; a="440243743" X-IronPort-AV: E=Sophos;i="6.01,193,1684825200"; d="scan'208";a="440243743" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2023 06:32:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="879955041" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 22 Aug 2023 06:32:10 -0700 From: Heikki Krogerus To: Benson Leung Cc: Jameson Thies , Prashant Malani , Won Chung , linux-usb@vger.kernel.org Subject: [RFC PATCH 0/2] usb: Link USB devices with their USB Type-C partner counterparts Date: Tue, 22 Aug 2023 16:32:03 +0300 Message-Id: <20230822133205.2063210-1-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi Benson, RFC for now. I can't test these properly. If you guys could take over this, I would much appreciated. I hope this is at least close to your proposal. With this (or something like it) you should be able to get notification about USB connections and disconnections to your port driver by implementing the new "attach" and "deattach" callbacks in struct typec_partner_desc. The typec partner devices will also have symlinks to the enumerated USB devices and vise versa. I took a little shortcut and did not implement a proper device list. Instead there is now only a member for the USB2 device and a member for the USB3 device in struct typec_port, so with this only USB is supported. But the API does not deal with struct usb_device, so extending this to support other devices (TBT, Displayport, etc.) by adding the actual device list should be fairly easy. thanks, Heikki Krogerus (2): usb: typec: Link enumerated USB devices with Type-C partner usb: Inform the USB Type-C class about enumerated devices drivers/usb/core/hub.c | 4 ++ drivers/usb/core/hub.h | 3 + drivers/usb/core/port.c | 19 +++++- drivers/usb/typec/class.c | 108 +++++++++++++++++++++++++++++--- drivers/usb/typec/class.h | 16 +++++ drivers/usb/typec/port-mapper.c | 9 ++- include/linux/usb/typec.h | 37 +++++++++++ 7 files changed, 184 insertions(+), 12 deletions(-) Tested-by: Benson Leung