From patchwork Tue Sep 10 07:04:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 11138859 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CFDD61395 for ; Tue, 10 Sep 2019 07:15:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6EBF222C4 for ; Tue, 10 Sep 2019 07:15:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406606AbfIJHOb (ORCPT ); Tue, 10 Sep 2019 03:14:31 -0400 Received: from mxwww.masterlogin.de ([95.129.51.220]:43488 "EHLO mxwww.masterlogin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404344AbfIJHOb (ORCPT ); Tue, 10 Sep 2019 03:14:31 -0400 Received: from mxout2.routing.net (unknown [192.168.10.82]) by new.mxwww.masterlogin.de (Postfix) with ESMTPS id 164869634E; Tue, 10 Sep 2019 07:05:16 +0000 (UTC) Received: from mxbox2.masterlogin.de (unknown [192.168.10.253]) by mxout2.routing.net (Postfix) with ESMTP id 6672D6208B; Tue, 10 Sep 2019 07:05:16 +0000 (UTC) Received: from localhost.localdomain (fttx-pool-185.75.73.135.bambit.de [185.75.73.135]) by mxbox2.masterlogin.de (Postfix) with ESMTPSA id 68831100C2A; Tue, 10 Sep 2019 07:05:15 +0000 (UTC) From: Frank Wunderlich To: linux-mediatek@lists.infradead.org Cc: Frank Wunderlich , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Alessandro Zummo , Alexandre Belloni , Eddie Huang , Josef Friedl , Lee Jones , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-rtc@vger.kernel.org, Mark Rutland , Matthias Brugger , Rob Herring , Sean Wang , Sebastian Reichel , "Tianping Fang" Subject: [PATCH v7 3/7] rtc: mt6397: improvements of rtc driver Date: Tue, 10 Sep 2019 09:04:42 +0200 Message-Id: <20190910070446.639-4-frank-w@public-files.de> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190910070446.639-1-frank-w@public-files.de> References: <20190910070446.639-1-frank-w@public-files.de> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Josef Friedl - use regmap_read_poll_timeout to drop while-loop - use devm-api to drop remove-callback Suggested-by: Alexandre Belloni Signed-off-by: Josef Friedl Signed-off-by: Frank Wunderlich Acked-by: Alexandre Belloni --- changes since v6: none changes since v5: none changes since v4: none changes since v3: none changes since v2: - fix allocation after irq-request - compatible for mt6323 in separate commit => part 5 --- drivers/rtc/rtc-mt6397.c | 51 +++++++++++++++------------------------- 1 file changed, 19 insertions(+), 32 deletions(-) diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c index c08ee5edf865..9370b7fc9f81 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; } @@ -266,19 +263,19 @@ static int mtk_rtc_probe(struct platform_device *pdev) return rtc->irq; rtc->regmap = mt6397_chip->regmap; - rtc->dev = &pdev->dev; mutex_init(&rtc->lock); platform_set_drvdata(pdev, rtc); - rtc->rtc_dev = devm_rtc_allocate_device(rtc->dev); + rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc->rtc_dev)) return PTR_ERR(rtc->rtc_dev); - ret = request_threaded_irq(rtc->irq, NULL, - mtk_rtc_irq_handler_thread, - IRQF_ONESHOT | IRQF_TRIGGER_HIGH, - "mt6397-rtc", rtc); + ret = devm_request_threaded_irq(&pdev->dev, 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); @@ -302,15 +299,6 @@ 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) { @@ -349,7 +337,6 @@ 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);