From patchwork Sat Oct 12 09:09:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3030961 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3C08A9F2B7 for ; Sat, 12 Oct 2013 09:26:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5C025202A1 for ; Sat, 12 Oct 2013 09:26:24 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4359F200C1 for ; Sat, 12 Oct 2013 09:26:23 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VUvR1-0002Jh-4r; Sat, 12 Oct 2013 09:24:31 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VUvQS-0001dE-Rr; Sat, 12 Oct 2013 09:23:56 +0000 Received: from va3ehsobe004.messaging.microsoft.com ([216.32.180.14] helo=va3outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VUvPo-0001Wb-UB for linux-arm-kernel@lists.infradead.org; Sat, 12 Oct 2013 09:23:19 +0000 Received: from mail13-va3-R.bigfish.com (10.7.14.227) by VA3EHSOBE007.bigfish.com (10.7.40.11) with Microsoft SMTP Server id 14.1.225.22; Sat, 12 Oct 2013 09:22:59 +0000 Received: from mail13-va3 (localhost [127.0.0.1]) by mail13-va3-R.bigfish.com (Postfix) with ESMTP id 191703C00B8; Sat, 12 Oct 2013 09:22:59 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz1de098h1de097h8275bhz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h1155h) Received: from mail13-va3 (localhost.localdomain [127.0.0.1]) by mail13-va3 (MessageSwitch) id 1381569776639093_10909; Sat, 12 Oct 2013 09:22:56 +0000 (UTC) Received: from VA3EHSMHS037.bigfish.com (unknown [10.7.14.226]) by mail13-va3.bigfish.com (Postfix) with ESMTP id 8AF0D18004C; Sat, 12 Oct 2013 09:22:56 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS037.bigfish.com (10.7.99.47) with Microsoft SMTP Server (TLS) id 14.16.227.3; Sat, 12 Oct 2013 09:22:56 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-003.039d.mgd.msft.net (10.84.1.16) with Microsoft SMTP Server (TLS) id 14.3.158.2; Sat, 12 Oct 2013 09:22:55 +0000 Received: from shlinux1.ap.freescale.net (shlinux1.ap.freescale.net [10.192.225.216]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r9C9MKvA017154; Sat, 12 Oct 2013 02:22:52 -0700 From: Peter Chen To: , Subject: [PATCH 08/12] usb: phy-mxs: Add system suspend/resume API Date: Sat, 12 Oct 2013 17:09:42 +0800 Message-ID: <1381568986-19802-9-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1381568986-19802-1-git-send-email-peter.chen@freescale.com> References: <1381568986-19802-1-git-send-email-peter.chen@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131012_052317_325338_466C5F29 X-CRM114-Status: GOOD ( 15.23 ) X-Spam-Score: -2.6 (--) Cc: marex@denx.de, m.grzeschik@pengutronix.de, frank.li@freescale.com, alexander.shishkin@linux.intel.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, peter.chen@freescale.com, kernel@pengutronix.de, festevam@gmail.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, 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 We need this to keep PHY's power on or off during the system suspend mode. If we need to enable USB wakeup, then we must keep PHY's power being on during the system suspend mode. Otherwise, we need to keep PHY's power being off to save power. Signed-off-by: Peter Chen --- drivers/usb/phy/phy-mxs-usb.c | 47 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 47 insertions(+), 0 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 693f9a4..a91ddc0 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -57,11 +57,18 @@ #define BM_USBPHY_DEBUG_CLKGATE BIT(30) /* Anatop Registers */ +#define ANADIG_ANA_MISC0 0x150 +#define ANADIG_ANA_MISC0_SET 0x154 +#define ANADIG_ANA_MISC0_CLR 0x158 + #define ANADIG_USB1_VBUS_DET_STAT 0x1c0 #define ANADIG_USB1_LOOPBACK_SET 0x1e4 #define ANADIG_USB1_LOOPBACK_CLR 0x1e8 +#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG BIT(12) +#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL BIT(11) + #define BM_ANADIG_USB1_VBUS_DET_STAT_VBUS_VALID BIT(3) #define BM_ANADIG_USB1_LOOPBACK_UTMI_DIG_TST1 BIT(2) @@ -192,6 +199,22 @@ static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) ? "disconnected" : "connected"); } +static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on) +{ + unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR; + + /* Only the SoCs have anatop need below operation */ + if (!mxs_phy->regmap_anatop) + return; + + if (is_mx6q_phy(mxs_phy)) + regmap_write(mxs_phy->regmap_anatop, reg, + BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG); + else if (is_mx6sl_phy(mxs_phy)) + regmap_write(mxs_phy->regmap_anatop, + reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL); +} + static int mxs_phy_init(struct usb_phy *phy) { struct mxs_phy *mxs_phy = to_mxs_phy(phy); @@ -413,6 +436,7 @@ static int mxs_phy_probe(struct platform_device *pdev) platform_set_drvdata(pdev, &mxs_phy->phy); + device_set_wakeup_capable(&pdev->dev, true); ret = usb_add_phy_dev(&mxs_phy->phy); if (ret) return ret; @@ -429,6 +453,28 @@ static int mxs_phy_remove(struct platform_device *pdev) return 0; } +static int mxs_phy_system_suspend(struct device *dev) +{ + struct mxs_phy *mxs_phy = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + mxs_phy_enable_ldo_in_suspend(mxs_phy, true); + + return 0; +} + +static int mxs_phy_system_resume(struct device *dev) +{ + struct mxs_phy *mxs_phy = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) + mxs_phy_enable_ldo_in_suspend(mxs_phy, false); + + return 0; +} + +SIMPLE_DEV_PM_OPS(mxs_phy_pm, mxs_phy_system_suspend, mxs_phy_system_resume); + static struct platform_driver mxs_phy_driver = { .probe = mxs_phy_probe, .remove = mxs_phy_remove, @@ -436,6 +482,7 @@ static struct platform_driver mxs_phy_driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .of_match_table = mxs_phy_dt_ids, + .pm = &mxs_phy_pm, }, };