From patchwork Fri Dec 27 02:38:40 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3408111 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 593A5C02DC for ; Fri, 27 Dec 2013 03:48:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A3EC020149 for ; Fri, 27 Dec 2013 03:48:32 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 616FF20144 for ; Fri, 27 Dec 2013 03:48:31 +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 1VwNxG-0006RT-Dl; Fri, 27 Dec 2013 03:19:19 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VwNw4-00022C-GH; Fri, 27 Dec 2013 03:18:04 +0000 Received: from mail-db9lp0248.outbound.messaging.microsoft.com ([213.199.154.248] helo=db9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VwNuD-0001tP-Mg for linux-arm-kernel@lists.infradead.org; Fri, 27 Dec 2013 03:16:11 +0000 Received: from mail89-db9-R.bigfish.com (10.174.16.229) by DB9EHSOBE004.bigfish.com (10.174.14.67) with Microsoft SMTP Server id 14.1.225.22; Fri, 27 Dec 2013 03:15:47 +0000 Received: from mail89-db9 (localhost [127.0.0.1]) by mail89-db9-R.bigfish.com (Postfix) with ESMTP id BB447601BB; Fri, 27 Dec 2013 03:15:47 +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(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah1fc6hzz1de098h8275bh1de097hz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h2327h2336h1155h) Received: from mail89-db9 (localhost.localdomain [127.0.0.1]) by mail89-db9 (MessageSwitch) id 1388114145865977_18572; Fri, 27 Dec 2013 03:15:45 +0000 (UTC) Received: from DB9EHSMHS003.bigfish.com (unknown [10.174.16.234]) by mail89-db9.bigfish.com (Postfix) with ESMTP id CC8A82C0047; Fri, 27 Dec 2013 03:15:45 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB9EHSMHS003.bigfish.com (10.174.14.13) with Microsoft SMTP Server (TLS) id 14.16.227.3; Fri, 27 Dec 2013 03:15:45 +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; Fri, 27 Dec 2013 03:15:45 +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 rBR3EpX3023284; Thu, 26 Dec 2013 20:15:41 -0700 From: Peter Chen To: , Subject: [PATCH v9 11/12] usb: phy-mxs: Add system suspend/resume API Date: Fri, 27 Dec 2013 10:38:40 +0800 Message-ID: <1388111921-17326-12-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1388111921-17326-1-git-send-email-peter.chen@freescale.com> References: <1388111921-17326-1-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%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131226_221610_046519_0680BB71 X-CRM114-Status: GOOD ( 15.28 ) X-Spam-Score: -0.6 (/) Cc: marex@denx.de, m.grzeschik@pengutronix.de, frank.li@freescale.com, linux-doc@vger.kernel.org, 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=-3.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD,UNPARSEABLE_RELAY,UNRESOLVED_TEMPLATE autolearn=ham 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 | 61 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 61 insertions(+), 0 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 96aac05..53b8dad 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -57,6 +57,10 @@ #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_USB2_VBUS_DET_STAT 0x220 @@ -65,6 +69,9 @@ #define ANADIG_USB2_LOOPBACK_SET 0x244 #define ANADIG_USB2_LOOPBACK_CLR 0x248 +#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_USB2_VBUS_DET_STAT_VBUS_VALID BIT(3) @@ -134,6 +141,16 @@ struct mxs_phy { int port_id; }; +static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy) +{ + return mxs_phy->data == &imx6q_phy_data; +} + +static inline bool is_imx6sl_phy(struct mxs_phy *mxs_phy) +{ + return mxs_phy->data == &imx6sl_phy_data; +} + static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) { int ret; @@ -382,6 +399,8 @@ static int mxs_phy_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mxs_phy); + device_set_wakeup_capable(&pdev->dev, true); + ret = usb_add_phy_dev(&mxs_phy->phy); if (ret) return ret; @@ -398,6 +417,47 @@ static int mxs_phy_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +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; + + /* If the SoCs don't have anatop, quit */ + if (!mxs_phy->regmap_anatop) + return; + + if (is_imx6q_phy(mxs_phy)) + regmap_write(mxs_phy->regmap_anatop, reg, + BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG); + else if (is_imx6sl_phy(mxs_phy)) + regmap_write(mxs_phy->regmap_anatop, + reg, BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG_SL); +} + +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; +} +#endif /* CONFIG_PM_SLEEP */ + +static 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, @@ -405,6 +465,7 @@ static struct platform_driver mxs_phy_driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .of_match_table = mxs_phy_dt_ids, + .pm = &mxs_phy_pm, }, };