From patchwork Wed Jul 3 16:48:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 11029939 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8749D138B for ; Wed, 3 Jul 2019 16:50:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 75AEA1FE84 for ; Wed, 3 Jul 2019 16:50:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6900228998; Wed, 3 Jul 2019 16:50:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0C9AC1FE84 for ; Wed, 3 Jul 2019 16:50:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=TbjytRzU/PH+Ma6+VvDMWm4NY2S45LJWWNQAfZ+OMcw=; b=CyT38cTANYNBC48T+/unA3NFIZ gHFeYOh/zWOI9ICT1FlM5WNvJ8u+wD93XAmWAZxkjEW/WWlbdInplSmtfMeGy9Okbq8yRrGYSWhmc C6ck7tUqSY+Mi9/Tgykt+Bd0E+z6t0PWWfXUa4KEVLwwYOJMtZh6XnyAK2b0HBjBCw7vQ7IbI9Cy1 +76qxpYH9AGKc6X5u3vueVL9dqt1EAwY5pJFsJ3faL+g7L/3BHFiCCswE1Hcu0noQE1dGTzxwC4yZ iEH8nA/RZGItmfKpcMysMO1oGOzRxoZ+Ly97vvmGT9dUlEiVATKKjkLZh09LtqqNOKzUTdgjhYXyX DAEjwHWg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hiiSM-0001dD-DJ; Wed, 03 Jul 2019 16:50:06 +0000 Received: from mout.gmx.net ([212.227.15.15]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hiiRo-0001CK-PI; Wed, 03 Jul 2019 16:49:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1562172515; bh=Q4SNzBfUgmUaXEsp2/EkbHDrGPVnZzLCOAAZMoTbLHU=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=dUAq2zu8k0rxZvBIT5mcoE2t0sC3jCT+ju9g6JRkYtSp4RB6PavjpCfVuJ3uQRRag PtBvoecXZuNbglZNIfhDtks5YMtnk0+OSSOMgQzm+6QDyPXudrub7GdWqXzZqIxp28 vaAJLRKY6+Bm2vyaA7kTXQhbVzwli2iBr3QLmayg= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([217.61.158.204]) by mail.gmx.com (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MbirE-1iF1363taI-00dD2d; Wed, 03 Jul 2019 18:48:35 +0200 From: Frank Wunderlich To: Lee Jones , Rob Herring , Mark Rutland , Matthias Brugger , Sean Wang , Sebastian Reichel , Alessandro Zummo , Alexandre Belloni , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-rtc@vger.kernel.org, Eddie Huang , Thomas Gleixner , Richard Fontana , Allison Randal , "David S . Miller" , Mauro Carvalho Chehab , Greg Kroah-Hartman , Rob Herring , Linus Walleij , Nicolas Ferre , "Paul E . McKenney" Subject: [PATCH v2 3/7] rtc: mt6397: improvements of rtc driver Date: Wed, 3 Jul 2019 18:48:18 +0200 Message-Id: <20190703164822.17924-4-frank-w@public-files.de> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190703164822.17924-1-frank-w@public-files.de> References: <20190703164822.17924-1-frank-w@public-files.de> X-Provags-ID: V03:K1:Doz5m2szHD54xebFCDZtFG1jkMhZkLcvMGXvCyriCBWcdSKa3Po 9pNHVGegXnLoqrAeDO7HXgCEhNeUReGWchhh3UVvXcsL6dD65KFzYJ1tAzs8YKkI2gMYAJW LC9Evz9eFQO1eF3akk3EL0bT7PfbiTi5oaw4VaP8f9vPXewf09C2JHPqAcdg9iEdYErjHpu 1VcNABzfFOtmGkWQ3WBeA== X-UI-Out-Filterresults: notjunk:1;V03:K0:XzjbtNDDVBI=:6fPDOhc3ib1mIDPeODXkCM sGi1yA24Th45Cti4r6Y/VVlK7UWP/BLhd4poItsbr+IxQhAowvs6NNYsbHW3GH455oJZvioNF Iz9au5ndpJA27wKgIKRuGvhb+0p59VDjdfiVFTfduF+yiu4c+G+S7rrqVatiaGL1nAucT4yel 1JiS4o0cD/oOP58flHAPTxmJkMw0e93hr94qBZRn9BCNdG69zTFZkd7xpHZsp5uNOq7L3uKIU yHj60ZWItxffMb4qH/X7ERxbLhEQwIY02T+NQtnZg4v2259rR5do7Upvh1RRUcolMeM7vGTYH mgCAy2IOu53hldt6Q3fRSXGaI3OqMbu3WeoBN/RK1DPRzEDEdIYwAYr9BOdAr5VoUSQhzOjvj qSjwMlr4ryLFhTrnOEqtJ6X0Xop8NoGrWRlf1jnVB9CTiqe3716CRqhlsNdaEVhghXX3dQjol CGpdKc6iw9xvxM0zJz9l6x7g7GxkistvOnle7SMPISNaZwZER8Rza8QR9K1ZEfCGrSgVwihbE e9Czk22vy05sRHcKC5Ke8nYPvGyskoGRZREhurmrTgSJBvVVymfKkSVH+FRux18hLEN25W0zA 47AKfruN7OYXdawFTDu43VqZgGSe9KllIEO3TbTgAS3Idocr9sBaBWxDj7Hh9ALIi0qpMnjIR o48+7naGWINRsknUz/s/qsc7S3ZEObFHqWKMKE8PHSCCOWLskDGq9tnr111598PVD7bldVS4F mAAuPrrA+wagXuvlmZ5ZlYv13TTbALqZkA7i6sn+Pd1AMWo+FJfdpIUs9LUWBhnn9Lhp0uDI9 zodNRadZvE4BtssJmsUzNk3dfiD9vJssjxxPSrRx9P3DYOxchAu6Q1MbvuSSuFRES+fw2bgrn 7wzeLS0IVG4/PofxgGy6FXVLzjjhnWUXj32h+vCPDiLKKMz/xZKW8CpWawz/b61VF+RAmqcRg MsZPvcSJ4LR/1YfWdlAh7cX9Gwv6OzpVyFO3ZpiPobgO76SIKO4GKVKkiqEywfTOsnfZ+TOhc ICjiGClrvXeiYyaHpfKONdnWyaH04Bbd0pCM/LW68c68SC8JSKo/kekPE6uBRNiLMkzjrYJyS sfAoazhD4roxRs= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190703_094933_121628_B9774E1E X-CRM114-Status: GOOD ( 16.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Josef Friedl , Frank Wunderlich MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Josef Friedl - use regmap_read_poll_timeout to drop while-loop - use devm-api to drop remove-callback - add new compatible for mt6323 Signed-off-by: Frank Wunderlich --- drivers/rtc/rtc-mt6397.c | 55 ++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 33 deletions(-) -- 2.17.1 diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c index c08ee5edf865..e5ddf0d0b6f1 100644 --- a/drivers/rtc/rtc-mt6397.c +++ b/drivers/rtc/rtc-mt6397.c @@ -4,16 +4,19 @@ * Author: Tianping.Fang */ -#include -#include +#include +#include +#include #include +#include +#include #include #include #include +#include static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc) { - unsigned long timeout = jiffies + HZ; int ret; u32 data; @@ -21,19 +24,13 @@ static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc) if (ret < 0) return ret; - while (1) { - ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_BBPU, - &data); - if (ret < 0) - break; - if (!(data & RTC_BBPU_CBUSY)) - break; - if (time_after(jiffies, timeout)) { - ret = -ETIMEDOUT; - break; - } - cpu_relax(); - } + ret = regmap_read_poll_timeout(rtc->regmap, + rtc->addr_base + RTC_BBPU, data, + !(data & RTC_BBPU_CBUSY), + MTK_RTC_POLL_DELAY_US, + MTK_RTC_POLL_TIMEOUT); + if (ret < 0) + dev_err(rtc->dev, "failed to write WRTGE: %d\n", ret); return ret; } @@ -271,14 +268,11 @@ static int mtk_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rtc); - rtc->rtc_dev = devm_rtc_allocate_device(rtc->dev); - if (IS_ERR(rtc->rtc_dev)) - return PTR_ERR(rtc->rtc_dev); + ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL, + mtk_rtc_irq_handler_thread, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + "mt6397-rtc", rtc); - ret = request_threaded_irq(rtc->irq, NULL, - mtk_rtc_irq_handler_thread, - IRQF_ONESHOT | IRQF_TRIGGER_HIGH, - "mt6397-rtc", rtc); if (ret) { dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", rtc->irq, ret); @@ -287,6 +281,10 @@ static int mtk_rtc_probe(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 1); + rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc->rtc_dev)) + return PTR_ERR(rtc->rtc_dev); + rtc->rtc_dev->ops = &mtk_rtc_ops; ret = rtc_register_device(rtc->rtc_dev); @@ -302,15 +300,6 @@ static int mtk_rtc_probe(struct platform_device *pdev) return ret; } -static int mtk_rtc_remove(struct platform_device *pdev) -{ - struct mt6397_rtc *rtc = platform_get_drvdata(pdev); - - free_irq(rtc->irq, rtc); - - return 0; -} - #ifdef CONFIG_PM_SLEEP static int mt6397_rtc_suspend(struct device *dev) { @@ -337,6 +326,7 @@ static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_rtc_suspend, mt6397_rtc_resume); static const struct of_device_id mt6397_rtc_of_match[] = { + { .compatible = "mediatek,mt6323-rtc", }, { .compatible = "mediatek,mt6397-rtc", }, { } }; @@ -349,7 +339,6 @@ static struct platform_driver mtk_rtc_driver = { .pm = &mt6397_pm_ops, }, .probe = mtk_rtc_probe, - .remove = mtk_rtc_remove, }; module_platform_driver(mtk_rtc_driver);