From patchwork Fri Sep 10 07:36:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neal Liu X-Patchwork-Id: 12484529 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=-17.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 D4161C433EF for ; Fri, 10 Sep 2021 07:39:28 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9D74A610C8 for ; Fri, 10 Sep 2021 07:39:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9D74A610C8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Mi7YenQs3DRUW2X1qBQWmJZSfpH3ZAsoTDQecSqXOxk=; b=tEHg0BNvi8JFtt tyvJhjBD3gb8DJjTyxZM3s8/dnFvAPVNpciE/6r+OEO/y6C46ZdfE96GyJ6B6k0RWn6y5HgDFHkzR BuDT0SyqUEqnZc4NZ6vYViLtrvEtNvajc8o+bH0MzflaQV3b86go0OoPJx7z7rk2YEmKt2DMLDsIw de1NJufnny/izEf9cCY907ehgJGIhmsDLGJn8v9KmK7JMdSQPrf6kDYSbfWCWnPbmnzKqCLcrpxdP 7wwFLsekpVtYVpgK/x3U8TSBqzpTWxNFTmuLYLGRrRuC26q0nOvZXs78dfwftx3+eRHkWx6pWOdV0 F4dUYnvL0SfoLXbPixDA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mOb5b-00C6az-L2; Fri, 10 Sep 2021 07:36:47 +0000 Received: from twspam01.aspeedtech.com ([211.20.114.71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mOb5X-00C6a3-FZ for linux-arm-kernel@lists.infradead.org; Fri, 10 Sep 2021 07:36:45 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 18A7GoO4001125; Fri, 10 Sep 2021 15:16:50 +0800 (GMT-8) (envelope-from neal_liu@aspeedtech.com) Received: from NealLiu-PC01.aspeedtech.com (192.168.2.78) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 10 Sep 2021 15:36:23 +0800 From: Neal Liu To: Alan Stern , Greg Kroah-Hartman , Tony Prisk , , , CC: Neal Liu , Tao Ren , Subject: [PATCH v4] usb: ehci: handshake CMD_RUN instead of STS_HALT Date: Fri, 10 Sep 2021 15:36:19 +0800 Message-ID: <20210910073619.26095-1-neal_liu@aspeedtech.com> X-Mailer: git-send-email 2.25.1 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 18A7GoO4001125 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210910_003643_818288_B308605A X-CRM114-Status: GOOD ( 14.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org For Aspeed, HCHalted status depends on not only Run/Stop but also ASS/PSS status. Handshake CMD_RUN on startup instead. Signed-off-by: Neal Liu Acked-by: Alan Stern Reviewed-by: Tao Ren Tested-by: Tao Ren Reviewed-by: Joel Stanley --- drivers/usb/host/ehci-hcd.c | 11 ++++++++++- drivers/usb/host/ehci-platform.c | 6 ++++++ drivers/usb/host/ehci.h | 1 + 3 files changed, 17 insertions(+), 1 deletion(-) --- Fix STS_HALT handshake failure for Aspeed 2500/2600 platform. Change since v3: - Add more description. Change since v2: - Use my "real" name for both the Signed-off-by: line and the From: line. Change since v1: - Handshake CMD_RUN status on startup instead of easily skip it. --- diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 6bdc6d6bf74d..55f92d25336b 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -634,7 +634,16 @@ 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. + * Check CMD_RUN instead. + */ + if (ehci->is_aspeed) + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN, + 1, 100 * 1000); + 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)