From patchwork Wed May 25 10:56:53 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 815682 Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p4PB02n0027949 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 25 May 2011 11:00:28 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by bombadil.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QPBn8-0007Xy-3W; Wed, 25 May 2011 10:58:18 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QPBn6-0000r7-Hr; Wed, 25 May 2011 10:58:16 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QPBm5-0000me-Bx for linux-arm-kernel@lists.infradead.org; Wed, 25 May 2011 10:57:16 +0000 Received: from katana.hi.pengutronix.de ([2001:6f8:1178:2:221:70ff:fe71:1890] helo=pengutronix.de) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1QPBm3-00085d-Sl; Wed, 25 May 2011 12:57:11 +0200 From: Wolfram Sang To: rtc-linux@googlegroups.com Subject: [PATCH V2 5/5] rtc: stmp3xxx: remove UIE handlers Date: Wed, 25 May 2011 12:56:53 +0200 Message-Id: <1306321013-28364-6-git-send-email-w.sang@pengutronix.de> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1306321013-28364-1-git-send-email-w.sang@pengutronix.de> References: <1306321013-28364-1-git-send-email-w.sang@pengutronix.de> X-SA-Exim-Connect-IP: 2001:6f8:1178:2:221:70ff:fe71:1890 X-SA-Exim-Mail-From: w.sang@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110525_065713_723591_3B2BB931 X-CRM114-Status: GOOD ( 18.37 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain Cc: John Stultz , Andrew Morton , Wolfram Sang , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 25 May 2011 11:00:28 +0000 (UTC) The RTC core handles UIE since 6610e08 (RTC: Rework RTC code to use timerqueue for events), so remove the specific interrupt in this driver. To make it work at all, enable interrupts in set_alarm() if needed. Drop IRQF_DISABLED which is deprecated, while we are here. Finally, add my copyright after all these changes. Signed-off-by: Wolfram Sang Tested-by: Shawn Guo --- drivers/rtc/rtc-stmp3xxx.c | 57 +++++++++++++------------------------------ 1 files changed, 17 insertions(+), 40 deletions(-) diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c index 50f065a..6999769 100644 --- a/drivers/rtc/rtc-stmp3xxx.c +++ b/drivers/rtc/rtc-stmp3xxx.c @@ -6,6 +6,7 @@ * * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. + * Copyright 2011 Wolfram Sang, Pengutronix e.K. */ /* @@ -33,7 +34,6 @@ #define STMP3XXX_RTC_CTRL_ALARM_IRQ_EN 0x00000001 #define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN 0x00000002 #define STMP3XXX_RTC_CTRL_ALARM_IRQ 0x00000004 -#define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ 0x00000008 #define STMP3XXX_RTC_STAT 0x10 #define STMP3XXX_RTC_STAT_STALE_SHIFT 16 @@ -52,9 +52,8 @@ struct stmp3xxx_rtc_data { struct rtc_device *rtc; - unsigned irq_count; void __iomem *io; - int irq_alarm, irq_1msec; + int irq_alarm; }; static void stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data) @@ -92,31 +91,16 @@ static int stmp3xxx_rtc_set_mmss(struct device *dev, unsigned long t) static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id) { struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev_id); - u32 status; - u32 events = 0; - - status = readl(rtc_data->io + STMP3XXX_RTC_CTRL) & - (STMP3XXX_RTC_CTRL_ALARM_IRQ | STMP3XXX_RTC_CTRL_ONEMSEC_IRQ); + u32 status = readl(rtc_data->io + STMP3XXX_RTC_CTRL); if (status & STMP3XXX_RTC_CTRL_ALARM_IRQ) { writel(STMP3XXX_RTC_CTRL_ALARM_IRQ, rtc_data->io + STMP3XXX_RTC_CTRL_CLR); - events |= RTC_AF | RTC_IRQF; + rtc_update_irq(rtc_data->rtc, 1, RTC_AF | RTC_IRQF); + return IRQ_HANDLED; } - if (status & STMP3XXX_RTC_CTRL_ONEMSEC_IRQ) { - writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ, - rtc_data->io + STMP3XXX_RTC_CTRL_CLR); - if (++rtc_data->irq_count % 1000 == 0) { - events |= RTC_UF | RTC_IRQF; - rtc_data->irq_count = 0; - } - } - - if (events) - rtc_update_irq(rtc_data->rtc, 1, events); - - return IRQ_HANDLED; + return IRQ_NONE; } static int stmp3xxx_alarm_irq_enable(struct device *dev, unsigned int enabled) @@ -154,6 +138,9 @@ static int stmp3xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) rtc_tm_to_time(&alm->time, &t); writel(t, rtc_data->io + STMP3XXX_RTC_ALARM); + + stmp3xxx_alarm_irq_enable(dev, alm->enabled); + return 0; } @@ -173,10 +160,9 @@ static int stmp3xxx_rtc_remove(struct platform_device *pdev) if (!rtc_data) return 0; - writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, + writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, rtc_data->io + STMP3XXX_RTC_CTRL_CLR); free_irq(rtc_data->irq_alarm, &pdev->dev); - free_irq(rtc_data->irq_1msec, &pdev->dev); rtc_device_unregister(rtc_data->rtc); platform_set_drvdata(pdev, NULL); iounmap(rtc_data->io); @@ -210,7 +196,6 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev) } rtc_data->irq_alarm = platform_get_irq(pdev, 0); - rtc_data->irq_1msec = platform_get_irq(pdev, 1); if (!(readl(STMP3XXX_RTC_STAT + rtc_data->io) & STMP3XXX_RTC_STAT_RTC_PRESENT)) { @@ -227,6 +212,9 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev) STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE, rtc_data->io + STMP3XXX_RTC_PERSISTENT0_CLR); + writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, + rtc_data->io + STMP3XXX_RTC_CTRL_CLR); + rtc_data->rtc = rtc_device_register(pdev->name, &pdev->dev, &stmp3xxx_rtc_ops, THIS_MODULE); if (IS_ERR(rtc_data->rtc)) { @@ -234,29 +222,17 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev) goto out_remap; } - rtc_data->irq_count = 0; - err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt, - IRQF_DISABLED, "RTC alarm", &pdev->dev); + err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt, 0, + "RTC alarm", &pdev->dev); if (err) { dev_err(&pdev->dev, "Cannot claim IRQ%d\n", rtc_data->irq_alarm); goto out_irq_alarm; } - err = request_irq(rtc_data->irq_1msec, stmp3xxx_rtc_interrupt, - IRQF_DISABLED, "RTC tick", &pdev->dev); - if (err) { - dev_err(&pdev->dev, "Cannot claim IRQ%d\n", - rtc_data->irq_1msec); - goto out_irq1; - } return 0; -out_irq1: - free_irq(rtc_data->irq_alarm, &pdev->dev); out_irq_alarm: - writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, - rtc_data->io + STMP3XXX_RTC_CTRL_CLR); rtc_device_unregister(rtc_data->rtc); out_remap: platform_set_drvdata(pdev, NULL); @@ -313,5 +289,6 @@ module_init(stmp3xxx_rtc_init); module_exit(stmp3xxx_rtc_exit); MODULE_DESCRIPTION("STMP3xxx RTC Driver"); -MODULE_AUTHOR("dmitry pervushin "); +MODULE_AUTHOR("dmitry pervushin and " + "Wolfram Sang "); MODULE_LICENSE("GPL");