From patchwork Tue Apr 26 12:57:40 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 8938551 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 19C8BBF29F for ; Tue, 26 Apr 2016 13:04:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DFF2520142 for ; Tue, 26 Apr 2016 13:04:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7E52720148 for ; Tue, 26 Apr 2016 13:04:54 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1av2eF-0001dD-6u; Tue, 26 Apr 2016 13:03:27 +0000 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1av2d7-0000Hn-J7 for linux-arm-kernel@lists.infradead.org; Tue, 26 Apr 2016 13:02:18 +0000 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u3QCubZb022163; Tue, 26 Apr 2016 06:01:42 -0700 Received: from sc-exch04.marvell.com ([199.233.58.184]) by mx0b-0016f401.pphosted.com with ESMTP id 22g8jfqsqc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 26 Apr 2016 06:01:42 -0700 Received: from SC-EXCH04.marvell.com (10.93.176.84) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server (TLS) id 15.0.1104.5; Tue, 26 Apr 2016 06:01:40 -0700 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server id 15.0.1104.5 via Frontend Transport; Tue, 26 Apr 2016 06:01:40 -0700 Received: from xhacker.marvell.com (unknown [10.37.130.134]) by maili.marvell.com (Postfix) with ESMTP id CE7C83F703F; Tue, 26 Apr 2016 06:01:39 -0700 (PDT) From: Jisheng Zhang To: , Subject: [RESEND PATCH v2 7/7] usb: xhci: plat: add vbus regulator control Date: Tue, 26 Apr 2016 20:57:40 +0800 Message-ID: <1461675460-2295-8-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1461675460-2295-1-git-send-email-jszhang@marvell.com> References: <1461675460-2295-1-git-send-email-jszhang@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-04-26_07:, , signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1603290000 definitions=main-1604260210 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160426_060217_798483_14F3B191 X-CRM114-Status: GOOD ( 14.33 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jisheng Zhang , yendapally.reddy@broadcom.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The Marvell BG4CT STB board has board level vbus control through gpio. This patch adds the vbus regulator control to support this board. Signed-off-by: Jisheng Zhang --- drivers/usb/host/xhci-plat.c | 40 +++++++++++++++++++++++++++++++++++++++- drivers/usb/host/xhci.h | 2 ++ 2 files changed, 41 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index d7f4f3c..0310c13 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -178,6 +179,7 @@ static int xhci_plat_probe(struct platform_device *pdev) struct clk *clk; struct usb_phy *usb_phy; struct phy *phy; + struct regulator *vbus; int ret; int irq; @@ -249,13 +251,30 @@ static int xhci_plat_probe(struct platform_device *pdev) device_wakeup_enable(hcd->self.controller); + vbus = devm_regulator_get(&pdev->dev, "vbus"); + if (PTR_ERR(vbus) == -ENODEV) { + vbus = NULL; + } else if (IS_ERR(vbus)) { + ret = PTR_ERR(vbus); + goto disable_clk; + } else if (vbus) { + ret = regulator_enable(vbus); + if (ret) { + dev_err(&pdev->dev, + "failed to enable usb vbus regulator: %d\n", + ret); + goto disable_clk; + } + } + xhci->clk = clk; + xhci->vbus = vbus; xhci->main_hcd = hcd; xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev, dev_name(&pdev->dev), hcd); if (!xhci->shared_hcd) { ret = -ENOMEM; - goto disable_clk; + goto disable_vbus; } if ((node && of_property_read_bool(node, "usb3-lpm-capable")) || @@ -323,6 +342,10 @@ disable_usb2_phy: put_usb3_hcd: usb_put_hcd(xhci->shared_hcd); +disable_vbus: + if (vbus) + regulator_disable(vbus); + disable_clk: clk_disable_unprepare(clk); @@ -337,6 +360,7 @@ static int xhci_plat_remove(struct platform_device *dev) struct usb_hcd *hcd = platform_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct clk *clk = xhci->clk; + struct regulator *vbus = xhci->vbus; usb_remove_hcd(xhci->shared_hcd); xhci_plat_phy_exit(xhci->shared_hcd); @@ -347,6 +371,9 @@ static int xhci_plat_remove(struct platform_device *dev) clk_disable_unprepare(clk); usb_put_hcd(hcd); + if (vbus) + regulator_disable(vbus); + return 0; } @@ -356,6 +383,7 @@ static int xhci_plat_suspend(struct device *dev) int ret; struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct regulator *vbus = xhci->vbus; /* * xhci_suspend() needs `do_wakeup` to know whether host is allowed @@ -373,6 +401,9 @@ static int xhci_plat_suspend(struct device *dev) xhci_plat_phy_exit(hcd); clk_disable_unprepare(xhci->clk); + if (vbus) + ret = regulator_disable(vbus); + return ret; } @@ -381,11 +412,18 @@ static int xhci_plat_resume(struct device *dev) int ret; struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct regulator *vbus = xhci->vbus; ret = clk_prepare_enable(xhci->clk); if (ret) return ret; + if (vbus) { + ret = regulator_enable(vbus); + if (ret) + return ret; + } + ret = xhci_plat_phy_init(hcd); if (ret) return ret; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 6c629c9..5fa8662 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1550,6 +1550,8 @@ struct xhci_hcd { struct msix_entry *msix_entries; /* optional clock */ struct clk *clk; + /* optional regulator */ + struct regulator *vbus; /* data structures */ struct xhci_device_context_array *dcbaa; struct xhci_ring *cmd_ring;