From mboxrd@z Thu Jan 1 00:00:00 1970 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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 6CD1BC433E9 for ; Fri, 22 Jan 2021 15:33:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C3B323AA1 for ; Fri, 22 Jan 2021 15:33:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729117AbhAVPc7 (ORCPT ); Fri, 22 Jan 2021 10:32:59 -0500 Received: from mga14.intel.com ([192.55.52.115]:33225 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729040AbhAVPct (ORCPT ); Fri, 22 Jan 2021 10:32:49 -0500 IronPort-SDR: GBd63PaVdaHk0GBhWPWPNhfj7i8UfMeaP6GvfnB4B51q/n2ewMGf5GSF25pv3PWcYChFIyMl6J 8+/CcOF8VXrQ== X-IronPort-AV: E=McAfee;i="6000,8403,9872"; a="178680811" X-IronPort-AV: E=Sophos;i="5.79,366,1602572400"; d="scan'208";a="178680811" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jan 2021 07:30:59 -0800 IronPort-SDR: OtUq2s9zwphiU3lxtddnvRt3t/ACFbw02R1tYE41jZmmEvsUbqwn4MgNtoDpcAtImDQqvTsnXD jHMLwu7rQzwg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,366,1602572400"; d="scan'208";a="348297792" Received: from mattu-haswell.fi.intel.com (HELO [10.237.72.170]) ([10.237.72.170]) by fmsmga007.fm.intel.com with ESMTP; 22 Jan 2021 07:30:57 -0800 Subject: Re: [PATCH 0/4] add xhci hooks for USB offload To: Howard Yen , Mathias Nyman Cc: gregkh@linuxfoundation.org, robh+dt@kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210119101044.1637023-1-howardyen@google.com> From: Mathias Nyman Autocrypt: addr=mathias.nyman@linux.intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On 20.1.2021 12.04, Howard Yen wrote: > On Tue, Jan 19, 2021 at 8:47 PM Mathias Nyman wrote: >> >> On 19.1.2021 12.10, Howard Yen wrote: >>> To let the xhci driver support USB offload, add hooks for vendor to have >>> customized behavior for the initialization, memory allocation, irq work, and >>> device context synchronization. Detail is in each patch commit message. >> >> Is this related to the usb audio sideband capability that was added to the xHCI specification? >> If yes, then we should probably implement the generic parts first, and then add >> the vendor specific hooks. >> >> -Mathias >> >> > > This is for offloading, no matter what type of offloading. > I made the hooks generically and can be used for usb audio on the xhci > which is not including the usb audio sideband capability. > Ok, before adding hooks like this I think we need to see how they are used. Do you have the rest of the patches that go on top of this series? Maybe it could make sense to use overrides for the functions in struct hc_driver instead in some cases? There is support for that already. Thanks -Mathias