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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 02BE3C433E0 for ; Fri, 29 May 2020 13:07:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D791F206B6 for ; Fri, 29 May 2020 13:07:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726477AbgE2NHr (ORCPT ); Fri, 29 May 2020 09:07:47 -0400 Received: from mga07.intel.com ([134.134.136.100]:57654 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726476AbgE2NHq (ORCPT ); Fri, 29 May 2020 09:07:46 -0400 IronPort-SDR: TZKpzfvRMxjM7ba7OHHor42WD1GJ3rsReECngITmOSV7I9+SpIoJm6lm+AbpP2qsrpnhx14iCU jYwUGh4oay+Q== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 May 2020 06:07:45 -0700 IronPort-SDR: nB1NjIt2+/LfNWGcOvJ6zkNCru/V6Ht+bTe2rXeHQTAJi42lnnMkqpoaJHCAF+mnULGuQFAZ35 h3emFFBpZijw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,448,1583222400"; d="scan'208";a="414966709" Received: from mattu-haswell.fi.intel.com (HELO [10.237.72.170]) ([10.237.72.170]) by orsmga004.jf.intel.com with ESMTP; 29 May 2020 06:07:42 -0700 Subject: Re: [PATCH v2 7/9] usb: host: xhci-plat: add priv flag for skip_phy_initialization To: Peter Chen , balbi@kernel.org, mathias.nyman@intel.com Cc: linux-usb@vger.kernel.org, linux-imx@nxp.com, pawell@cadence.com, rogerq@ti.com, gregkh@linuxfoundation.org, jun.li@nxp.com References: <20200523232304.23976-1-peter.chen@nxp.com> <20200523232304.23976-8-peter.chen@nxp.com> From: Mathias Nyman Openpgp: preference=signencrypt Autocrypt: addr=mathias.nyman@linux.intel.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20200523232304.23976-8-peter.chen@nxp.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On 24.5.2020 2.23, Peter Chen wrote: > Some DRD controllers (eg, dwc3 & cdns3) have PHY management at > their own driver to cover both device and host mode, so add one > priv flag for such users to skip PHY management from HCD core. > > Signed-off-by: Peter Chen > --- > drivers/usb/host/xhci-plat.c | 8 ++++++-- > drivers/usb/host/xhci-plat.h | 1 + > 2 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c > index 03d6bbe51919..a3d6cb464186 100644 > --- a/drivers/usb/host/xhci-plat.c > +++ b/drivers/usb/host/xhci-plat.c > @@ -183,6 +183,8 @@ static int xhci_plat_probe(struct platform_device *pdev) > struct usb_hcd *hcd; > int ret; > int irq; > + struct xhci_plat_priv *priv = NULL; > + > > if (usb_disabled()) > return -ENODEV; > @@ -280,8 +282,7 @@ static int xhci_plat_probe(struct platform_device *pdev) > priv_match = dev_get_platdata(&pdev->dev); > > if (priv_match) { > - struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);h > - > + priv = hcd_to_xhci_priv(hcd); > /* Just copy data for now */ > *priv = *priv_match; > } > @@ -329,6 +330,9 @@ static int xhci_plat_probe(struct platform_device *pdev) > > hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node); > xhci->shared_hcd->tpl_support = hcd->tpl_support; > + if (priv && priv->skip_phy_initialization) > + hcd->skip_phy_initialization = 1; > + > ret = usb_add_hcd(hcd, irq, IRQF_SHARED); > if (ret) > goto disable_usb_phy; > diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h > index 1fb149d1fbce..8825e8eb28d6 100644 > --- a/drivers/usb/host/xhci-plat.h > +++ b/drivers/usb/host/xhci-plat.h > @@ -13,6 +13,7 @@ > struct xhci_plat_priv { > const char *firmware_name; > unsigned long long quirks; > + unsigned int skip_phy_initialization:1; Any specific reason why this approach was chosen instead of adding a new flag to the "long long quirks" above? -Mathias