From patchwork Thu Jul 12 05:07:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 10520927 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3B187602C8 for ; Thu, 12 Jul 2018 05:08:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2522C29125 for ; Thu, 12 Jul 2018 05:08:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 195CD2928D; Thu, 12 Jul 2018 05:08:38 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC88629125 for ; Thu, 12 Jul 2018 05:08:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726597AbeGLFQU (ORCPT ); Thu, 12 Jul 2018 01:16:20 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:42834 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725786AbeGLFQU (ORCPT ); Thu, 12 Jul 2018 01:16:20 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id w6C589oR083934; Thu, 12 Jul 2018 00:08:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1531372089; bh=01zvnLuGGa3qa4nGhhqaZLuSB4OGSs29nyasUmOVMq8=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=lRWqz9gVvjU7Ruaj1kC8VbFTNmikrsHSpFSfYd1yGrEOeo6A9dhgGoBvJKZZGRrY+ RfdKp87YuGoPBv3Sk00k2vTYEov1FoDE9GEpPgLvE2I6rBvQlUQGi48WUrjEFgurrb xh8c0RK4XKBnpNiit+vVhAeH3tjkGv4YCadEtnIw= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id w6C589RC007407; Thu, 12 Jul 2018 00:08:09 -0500 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Thu, 12 Jul 2018 00:08:09 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Thu, 12 Jul 2018 00:08:09 -0500 Received: from ula0393675.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w6C583Mj024383; Thu, 12 Jul 2018 00:08:06 -0500 From: Keerthy To: , CC: , , , , , Subject: [PATCH v4 1/4] rtc: omap: Cut down the shutdown time from 2 seconds to 1 sec Date: Thu, 12 Jul 2018 10:37:37 +0530 Message-ID: <1531372060-10532-2-git-send-email-j-keerthy@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1531372060-10532-1-git-send-email-j-keerthy@ti.com> References: <1531372060-10532-1-git-send-email-j-keerthy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Cut down the shutdown time from 2 seconds to 1 sec. In case of roll over try again. Signed-off-by: Keerthy --- Changes in v4: * Fixed a compilation issue. * Extended the roll over check post interrupt programming. drivers/rtc/rtc-omap.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 323ff55..88da927 100644 --- a/drivers/rtc/rtc-omap.c +++ b/drivers/rtc/rtc-omap.c @@ -435,17 +435,23 @@ static void omap_rtc_power_off(void) struct rtc_time tm; unsigned long now; u32 val; + int seconds; rtc->type->unlock(rtc); /* enable pmic_power_en control */ val = rtc_readl(rtc, OMAP_RTC_PMIC_REG); rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN); - /* set alarm two seconds from now */ +again: + /* Clear any existing ALARM2 event */ + rtc_writel(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM2); + + /* set alarm one second from now */ omap_rtc_read_time_raw(rtc, &tm); + seconds = tm.tm_sec; bcd2tm(&tm); rtc_tm_to_time(&tm, &now); - rtc_time_to_tm(now + 2, &tm); + rtc_time_to_tm(now + 1, &tm); if (tm2bcd(&tm) < 0) { dev_err(&rtc->rtc->dev, "power off failed\n"); @@ -470,6 +476,9 @@ static void omap_rtc_power_off(void) val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG, val | OMAP_RTC_INTERRUPTS_IT_ALARM2); + /* Our calculations started right before the rollover, try again */ + if (seconds != rtc_read(omap_rtc_power_off_rtc, OMAP_RTC_SECONDS_REG)) + goto again; rtc->type->lock(rtc); /*