From patchwork Sat Oct 12 09:35:04 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3031051 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 6FA399F440 for ; Sat, 12 Oct 2013 09:51:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7EED020320 for ; Sat, 12 Oct 2013 09:51:08 +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 70B652037F for ; Sat, 12 Oct 2013 09:51:07 +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 1VUvpJ-0001PC-LD; Sat, 12 Oct 2013 09:49:38 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VUvoz-0002F5-6X; Sat, 12 Oct 2013 09:49:17 +0000 Received: from mail-db8lp0185.outbound.messaging.microsoft.com ([213.199.154.185] helo=db8outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VUvoQ-00027p-0o for linux-arm-kernel@lists.infradead.org; Sat, 12 Oct 2013 09:48:43 +0000 Received: from mail192-db8-R.bigfish.com (10.174.8.253) by DB8EHSOBE021.bigfish.com (10.174.4.84) with Microsoft SMTP Server id 14.1.225.22; Sat, 12 Oct 2013 09:48:35 +0000 Received: from mail192-db8 (localhost [127.0.0.1]) by mail192-db8-R.bigfish.com (Postfix) with ESMTP id D7260C015D; Sat, 12 Oct 2013 09:48:34 +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 mail192-db8 (localhost.localdomain [127.0.0.1]) by mail192-db8 (MessageSwitch) id 1381571282116994_25819; Sat, 12 Oct 2013 09:48:02 +0000 (UTC) Received: from DB8EHSMHS001.bigfish.com (unknown [10.174.8.239]) by mail192-db8.bigfish.com (Postfix) with ESMTP id 168724000D5; Sat, 12 Oct 2013 09:48:02 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB8EHSMHS001.bigfish.com (10.174.4.11) with Microsoft SMTP Server (TLS) id 14.16.227.3; Sat, 12 Oct 2013 09:48:01 +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; Sat, 12 Oct 2013 09:48:00 +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 r9C9llln027790; Sat, 12 Oct 2013 02:47:56 -0700 From: Peter Chen To: , , Subject: [PATCH 02/11] usb: chipidea: imx: add power management support Date: Sat, 12 Oct 2013 17:35:04 +0800 Message-ID: <1381570513-24927-3-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1381570513-24927-1-git-send-email-peter.chen@freescale.com> References: <1381570513-24927-1-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_054842_251398_185DBA6C X-CRM114-Status: GOOD ( 16.31 ) X-Spam-Score: -1.9 (-) Cc: marex@denx.de, m.grzeschik@pengutronix.de, frank.li@freescale.com, alexander.shishkin@linux.intel.com, 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 Add system and runtime power management support for imx gluy layer. Signed-off-by: Peter Chen --- drivers/usb/chipidea/ci_hdrc_imx.c | 99 ++++++++++++++++++++++++++++++++++- 1 files changed, 96 insertions(+), 3 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 023d3cb..9f66f93 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -28,6 +28,8 @@ struct ci_hdrc_imx_data { struct platform_device *ci_pdev; struct clk *clk; struct imx_usbmisc_data *usbmisc_data; + atomic_t in_lpm; + bool supports_runtime_pm; }; /* Common functions shared by usbmisc drivers */ @@ -82,6 +84,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) CI_HDRC_DISABLE_STREAMING, }; int ret; + struct device_node *np = pdev->dev.of_node; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) { @@ -115,6 +118,11 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) pdata.phy = data->phy; + if (of_find_property(np, "supports_runtime_pm", NULL)) { + pdata.flags |= CI_HDRC_SUPPORTS_RUNTIME_PM; + data->supports_runtime_pm = true; + } + if (!pdev->dev.dma_mask) pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; if (!pdev->dev.coherent_dma_mask) @@ -151,8 +159,12 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) platform_set_drvdata(pdev, data); - pm_runtime_no_callbacks(&pdev->dev); - pm_runtime_enable(&pdev->dev); + device_set_wakeup_capable(&pdev->dev, true); + + if (data->supports_runtime_pm) { + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + } return 0; @@ -167,13 +179,93 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev) { struct ci_hdrc_imx_data *data = platform_get_drvdata(pdev); - pm_runtime_disable(&pdev->dev); ci_hdrc_remove_device(data->ci_pdev); + if (data->supports_runtime_pm) { + pm_runtime_get_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); + } + clk_disable_unprepare(data->clk); + + return 0; +} + +#ifdef CONFIG_PM +static int imx_controller_suspend(struct device *dev) +{ + struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); + + dev_dbg(dev, "at %s\n", __func__); + + if (atomic_read(&data->in_lpm)) + return 0; + clk_disable_unprepare(data->clk); + atomic_set(&data->in_lpm, 1); + return 0; } +static int imx_controller_resume(struct device *dev) +{ + struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); + int ret = 0; + + dev_dbg(dev, "at %s\n", __func__); + + if (!atomic_read(&data->in_lpm)) + return 0; + + ret = clk_prepare_enable(data->clk); + if (ret) + return ret; + + atomic_set(&data->in_lpm, 0); + + return ret; +} + +#ifdef CONFIG_PM_SLEEP +static int ci_hdrc_imx_suspend(struct device *dev) +{ + return imx_controller_suspend(dev); +} + +static int ci_hdrc_imx_resume(struct device *dev) +{ + struct ci_hdrc_imx_data *data = dev_get_drvdata(dev); + int ret; + + ret = imx_controller_resume(dev); + if (!ret && data->supports_runtime_pm) { + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + } + + return ret; +} +#endif /* CONFIG_PM_SLEEP */ + +#ifdef CONFIG_PM_RUNTIME +static int ci_hdrc_imx_runtime_suspend(struct device *dev) +{ + return imx_controller_suspend(dev); +} + +static int ci_hdrc_imx_runtime_resume(struct device *dev) +{ + return imx_controller_resume(dev); +} +#endif /* CONFIG_PM_RUNTIME */ + +#endif /* CONFIG_PM */ +static const struct dev_pm_ops ci_hdrc_imx_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume) + SET_RUNTIME_PM_OPS(ci_hdrc_imx_runtime_suspend, + ci_hdrc_imx_runtime_resume, NULL) +}; static const struct of_device_id ci_hdrc_imx_dt_ids[] = { { .compatible = "fsl,imx27-usb", }, { /* sentinel */ } @@ -187,6 +279,7 @@ static struct platform_driver ci_hdrc_imx_driver = { .name = "imx_usb", .owner = THIS_MODULE, .of_match_table = ci_hdrc_imx_dt_ids, + .pm = &ci_hdrc_imx_pm_ops, }, };