From patchwork Wed Mar 16 22:11:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 553319 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 8BEB2C43217 for ; Wed, 16 Mar 2022 22:12:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232357AbiCPWN5 (ORCPT ); Wed, 16 Mar 2022 18:13:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234500AbiCPWN4 (ORCPT ); Wed, 16 Mar 2022 18:13:56 -0400 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AF6B63A7 for ; Wed, 16 Mar 2022 15:12:38 -0700 (PDT) Received: by mail-ed1-x52e.google.com with SMTP id z92so3463822ede.13 for ; Wed, 16 Mar 2022 15:12:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language :from:to:cc:references:in-reply-to:content-transfer-encoding; bh=Mbk9eDgtV28j0TWUuMi3KlCoJjoq5ox4im4qxu+j5Ck=; b=SmhRYRQhoXZPq4H8FSWuHTlBLFyJmoQ8H9PxDXvVqGz+Myc/4Kx9o0TKTuo1gXBIgl 8lazzj1K2J7wvX/iEG3pOjANpIdSfgP5YCKS8nnCETMFlTFdpl0yF1M/64fl4tc+QR/R xszvesuLHTL1GJ7qJJZ0e2QV+W+C+Aseaza7EGvktqdlVs/nR0R7rQ0YwfL1HHIHElSf 8OjHRgzHqND5IbDVDoT7YtTFW5FYTNy+P+/pomkyAPQbRegIVij728nORfjyVUooUZQY kSCry2bhKdTt+bkMl1liOGajsKjWctE0+Fyr4Y6RfABK01fcxqYnduOBON3/2DHl6Swt CocA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:from:to:cc:references:in-reply-to :content-transfer-encoding; bh=Mbk9eDgtV28j0TWUuMi3KlCoJjoq5ox4im4qxu+j5Ck=; b=k9cNFq6wPfCsVaO31Y98WpQxyXysauZSgECDUY28jMePAUwetotSoTePSz/rDC1ZFp tt4ZkL4JYEEUgiSjTVEUJRyadpjbhbjNucnwvApBCpCHohrde0GuBpWK+9qiJKVKJmoo 9qzX42txQxeyOQ8GwDDKEeERtrMzP4ng3obc9KDJqH8ywN/hYR7qE1BDqffapTCpmew3 nwAbEcJSD4C4a0YMI/gyzXLI7NZLLtGwMR8sv3Cfqm39/1lCk6FZY3u9Jf72d672sU5G wo07R5Hp5CgpfgRAsyrHj7PsHxqZe2ad/F7cNJeD7ig/Uqi4JEVJXS2L+r1M8cRZTOzs UK4g== X-Gm-Message-State: AOAM530CuoH74H66n2u3n4w2Zh2iMJ4mM78ET3lx1N+mf01e0jiTy1oW Xs+VGFWFX2v203zdrZC/Q4g= X-Google-Smtp-Source: ABdhPJyOYTPz8Lm6U+5GQXq3v/ePt7jRdvqzUwNvaWYE2Emf9uwGbx2vo9KvFKvzAOWYR5pDdSLSwA== X-Received: by 2002:a05:6402:50cf:b0:418:ee57:ed9 with SMTP id h15-20020a05640250cf00b00418ee570ed9mr1494329edb.37.1647468756890; Wed, 16 Mar 2022 15:12:36 -0700 (PDT) Received: from ?IPV6:2a01:c23:b866:cc00:e490:2de6:a89f:9b66? 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[2a01:c23:b866:cc00:e490:2de6:a89f:9b66]) by smtp.googlemail.com with ESMTPSA id ec21-20020a170906b6d500b006d170a3444csm1424902ejb.164.2022.03.16.15.12.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Mar 2022 15:12:36 -0700 (PDT) Message-ID: <506113fe-5bd9-bdd0-7858-2b702ca32d53@gmail.com> Date: Wed, 16 Mar 2022 23:11:33 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: [PATCH v2 4/5] usb: host: xhci-plat: prepare operation w/o shared hcd Content-Language: en-US From: Heiner Kallweit To: Mathias Nyman , Greg Kroah-Hartman Cc: Linux USB Mailing List , "open list:ARM/Amlogic Meson..." , Alan Stern , Jack Pham , Tung Nguyen References: <0684616b-5cc0-e9f6-7015-ce709c6d4386@gmail.com> In-Reply-To: <0684616b-5cc0-e9f6-7015-ce709c6d4386@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This patch prepares xhci-plat for the following scenario - If either of the root hubs has no ports, then omit shared hcd - Main hcd can be USB3 if there are no USB2 ports Signed-off-by: Heiner Kallweit --- drivers/usb/host/xhci-plat.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 5d752b384..c512ec214 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -180,7 +180,7 @@ static int xhci_plat_probe(struct platform_device *pdev) struct device *sysdev, *tmpdev; struct xhci_hcd *xhci; struct resource *res; - struct usb_hcd *hcd; + struct usb_hcd *hcd, *usb3_hcd; int ret; int irq; struct xhci_plat_priv *priv = NULL; @@ -327,21 +327,26 @@ static int xhci_plat_probe(struct platform_device *pdev) if (ret) goto disable_usb_phy; - xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev, - dev_name(&pdev->dev), hcd); - if (!xhci->shared_hcd) { - ret = -ENOMEM; - goto dealloc_usb2_hcd; - } + if (!xhci_has_one_roothub(xhci)) { + xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev, + dev_name(&pdev->dev), hcd); + if (!xhci->shared_hcd) { + ret = -ENOMEM; + goto dealloc_usb2_hcd; + } - xhci->shared_hcd->tpl_support = hcd->tpl_support; + xhci->shared_hcd->tpl_support = hcd->tpl_support; + } - if (HCC_MAX_PSA(xhci->hcc_params) >= 4) - xhci->shared_hcd->can_do_streams = 1; + usb3_hcd = xhci_get_usb3_hcd(xhci); + if (usb3_hcd && HCC_MAX_PSA(xhci->hcc_params) >= 4) + usb3_hcd->can_do_streams = 1; - ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); - if (ret) - goto put_usb3_hcd; + if (xhci->shared_hcd) { + ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); + if (ret) + goto put_usb3_hcd; + } device_enable_async_suspend(&pdev->dev); pm_runtime_put_noidle(&pdev->dev);