From patchwork Fri Dec 13 01:23:44 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3335681 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 97C3DC0D4A for ; Fri, 13 Dec 2013 02:23:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 86375207D3 for ; Fri, 13 Dec 2013 02:23:15 +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 4D5B6207D1 for ; Fri, 13 Dec 2013 02:23:14 +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 1VrI2T-0006t6-SE; Fri, 13 Dec 2013 01:59:39 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VrI1n-0007sO-PT; Fri, 13 Dec 2013 01:58:55 +0000 Received: from co1ehsobe002.messaging.microsoft.com ([216.32.180.185] helo=co1outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VrI0B-0007ht-Tf for linux-arm-kernel@lists.infradead.org; Fri, 13 Dec 2013 01:57:17 +0000 Received: from mail26-co1-R.bigfish.com (10.243.78.252) by CO1EHSOBE034.bigfish.com (10.243.66.99) with Microsoft SMTP Server id 14.1.225.22; Fri, 13 Dec 2013 01:56:54 +0000 Received: from mail26-co1 (localhost [127.0.0.1]) by mail26-co1-R.bigfish.com (Postfix) with ESMTP id 522E71203F3; Fri, 13 Dec 2013 01:56:54 +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 mail26-co1 (localhost.localdomain [127.0.0.1]) by mail26-co1 (MessageSwitch) id 1386899812984766_3371; Fri, 13 Dec 2013 01:56:52 +0000 (UTC) Received: from CO1EHSMHS023.bigfish.com (unknown [10.243.78.244]) by mail26-co1.bigfish.com (Postfix) with ESMTP id E9D2A480047; Fri, 13 Dec 2013 01:56:52 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO1EHSMHS023.bigfish.com (10.243.66.33) with Microsoft SMTP Server (TLS) id 14.16.227.3; Fri, 13 Dec 2013 01:56:52 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-004.039d.mgd.msft.net (10.84.1.14) with Microsoft SMTP Server (TLS) id 14.3.158.2; Fri, 13 Dec 2013 01:56:50 +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 rBD1tWw6026858; Thu, 12 Dec 2013 18:56:46 -0700 From: Peter Chen To: , , , Subject: [PATCH v6 14/15] usb: phy-mxs: Add system suspend/resume API Date: Fri, 13 Dec 2013 09:23:44 +0800 Message-ID: <1386897825-6130-15-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1386897825-6130-1-git-send-email-peter.chen@freescale.com> References: <1386897825-6130-1-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-20131212_205716_142184_CBC72D64 X-CRM114-Status: GOOD ( 15.17 ) 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, 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=-2.9 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 | 58 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 58 insertions(+), 0 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 1bf78ee..885f8d9 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) @@ -139,6 +146,16 @@ 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; @@ -244,6 +261,22 @@ static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) } +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_init(struct usb_phy *phy) { struct mxs_phy *mxs_phy = to_mxs_phy(phy); @@ -435,6 +468,8 @@ static int mxs_phy_probe(struct platform_device *pdev) } } + device_set_wakeup_capable(&pdev->dev, true); + ret = usb_add_phy_dev(&mxs_phy->phy); if (ret) return ret; @@ -451,6 +486,28 @@ 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, @@ -458,6 +515,7 @@ static struct platform_driver mxs_phy_driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .of_match_table = mxs_phy_dt_ids, + .pm = &mxs_phy_pm, }, };