From patchwork Mon Feb 24 02:21:03 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3705851 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 76C36BF13A for ; Mon, 24 Feb 2014 04:03:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 86A602013A for ; Mon, 24 Feb 2014 04:03:00 +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 792D420136 for ; Mon, 24 Feb 2014 04:02:59 +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 1WHm4V-0005ZI-Hj; Mon, 24 Feb 2014 03:19:12 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WHm3k-0005pp-Uk; Mon, 24 Feb 2014 03:18:24 +0000 Received: from va3ehsobe005.messaging.microsoft.com ([216.32.180.31] helo=va3outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WHm2Y-0005f0-QT for linux-arm-kernel@lists.infradead.org; Mon, 24 Feb 2014 03:17:13 +0000 Received: from mail58-va3-R.bigfish.com (10.7.14.229) by VA3EHSOBE012.bigfish.com (10.7.40.62) with Microsoft SMTP Server id 14.1.225.22; Mon, 24 Feb 2014 03:16:47 +0000 Received: from mail58-va3 (localhost [127.0.0.1]) by mail58-va3-R.bigfish.com (Postfix) with ESMTP id 6B5BC3802C4; Mon, 24 Feb 2014 03:16:47 +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(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah21bch1fc6hzdchz1de098h8275bh1de097hz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h24afh2327h2336h2438h2461h2487h24d7h2516h2545h255eh1155h) Received: from mail58-va3 (localhost.localdomain [127.0.0.1]) by mail58-va3 (MessageSwitch) id 1393211805559694_20163; Mon, 24 Feb 2014 03:16:45 +0000 (UTC) Received: from VA3EHSMHS028.bigfish.com (unknown [10.7.14.238]) by mail58-va3.bigfish.com (Postfix) with ESMTP id 80A12360047; Mon, 24 Feb 2014 03:16:45 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS028.bigfish.com (10.7.99.38) with Microsoft SMTP Server (TLS) id 14.16.227.3; Mon, 24 Feb 2014 03:16:45 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-005.039d.mgd.msft.net (10.84.1.17) with Microsoft SMTP Server (TLS) id 14.3.158.2; Mon, 24 Feb 2014 03:16:44 +0000 Received: from shlinux1.ap.freescale.net (shlinux1.ap.freescale.net [10.192.225.216]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id s1O3FeOd003011; Sun, 23 Feb 2014 20:16:39 -0700 From: Peter Chen To: , , , , , Subject: [PATCH v11 11/15] usb: phy-mxs: Add system suspend/resume API Date: Mon, 24 Feb 2014 10:21:03 +0800 Message-ID: <1393208467-6355-12-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1393208467-6355-1-git-send-email-peter.chen@freescale.com> References: <1393208467-6355-1-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-20140223_221711_013527_D8F1F4C4 X-CRM114-Status: GOOD ( 15.04 ) X-Spam-Score: -1.3 (-) Cc: marex@denx.de, devicetree@vger.kernel.org, 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=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 | 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 da2eb6c..31ef59f 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; @@ -387,6 +404,8 @@ 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; @@ -403,6 +422,47 @@ 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, @@ -410,6 +470,7 @@ static struct platform_driver mxs_phy_driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .of_match_table = mxs_phy_dt_ids, + .pm = &mxs_phy_pm, }, };