From patchwork Thu Aug 26 07:15:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neal Liu X-Patchwork-Id: 503626 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 E97AEC432BE for ; Thu, 26 Aug 2021 07:14:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C259060F4A for ; Thu, 26 Aug 2021 07:14:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240003AbhHZHPh (ORCPT ); Thu, 26 Aug 2021 03:15:37 -0400 Received: from twspam01.aspeedtech.com ([211.20.114.71]:13666 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238379AbhHZHPg (ORCPT ); Thu, 26 Aug 2021 03:15:36 -0400 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 17Q6tdGm063548; Thu, 26 Aug 2021 14:55:39 +0800 (GMT-8) (envelope-from neal_liu@aspeedtech.com) Received: from NealLiu-PC01.aspeed.com (192.168.2.78) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 26 Aug 2021 15:14:19 +0800 From: neal_liu To: Alan Stern , Greg Kroah-Hartman , Tony Prisk , , , CC: , Tao Ren , Subject: [PATCH] usb: host: ehci: skip STS_HALT check for aspeed platform Date: Thu, 26 Aug 2021 15:15:25 +0800 Message-ID: <20210826071525.27651-1-neal_liu@aspeedtech.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [192.168.2.78] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 17Q6tdGm063548 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org STS_HALT also depends on ASS/PSS status for apseed. Skip this check on startup. Signed-off-by: neal_liu --- drivers/usb/host/ehci-hcd.c | 10 +++++++++- drivers/usb/host/ehci-platform.c | 6 ++++++ drivers/usb/host/ehci.h | 1 + 3 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..a539e11502ef 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -634,7 +634,15 @@ static int ehci_run (struct usb_hcd *hcd) /* Wait until HC become operational */ ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ msleep(5); - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000); + + /* For Aspeed, STS_HALT also depends on ASS/PSS status. + * Skip this check on startup. + */ + if (ehci->is_aspeed) + rc = 0; + else + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, + 0, 100 * 1000); up_write(&ehci_cf_port_reset_rwsem); diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index c70f2d0b4aaf..c3dc906274d9 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev) "has-transaction-translator")) hcd->has_tt = 1; + if (of_device_is_compatible(dev->dev.of_node, + "aspeed,ast2500-ehci") || + of_device_is_compatible(dev->dev.of_node, + "aspeed,ast2600-ehci")) + ehci->is_aspeed = 1; + if (soc_device_match(quirk_poll_match)) priv->quirk_poll = true; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 80bb823aa9fe..fdd073cc053b 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */ unsigned need_oc_pp_cycle:1; /* MPC834X port power */ unsigned imx28_write_fix:1; /* For Freescale i.MX28 */ unsigned spurious_oc:1; + unsigned is_aspeed:1; /* required for usb32 quirk */ #define OHCI_CTRL_HCFS (3 << 6)