From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61F4DC433EF for ; Fri, 15 Oct 2021 19:21:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4AE1C61151 for ; Fri, 15 Oct 2021 19:21:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242676AbhJOTXh (ORCPT ); Fri, 15 Oct 2021 15:23:37 -0400 Received: from relay10.mail.gandi.net ([217.70.178.230]:50585 "EHLO relay10.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230009AbhJOTXg (ORCPT ); Fri, 15 Oct 2021 15:23:36 -0400 Received: (Authenticated sender: alexandre.belloni@bootlin.com) by relay10.mail.gandi.net (Postfix) with ESMTPSA id B12A4240002; Fri, 15 Oct 2021 19:21:28 +0000 (UTC) From: Alexandre Belloni To: Alessandro Zummo , Alexandre Belloni Cc: linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/7] rtc: add correction parameter Date: Fri, 15 Oct 2021 21:21:17 +0200 Message-Id: <20211015192121.817642-5-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211015192121.817642-1-alexandre.belloni@bootlin.com> References: <20211015192121.817642-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a new parameter allowing the get and set the correction using ioctls instead of just sysfs. Signed-off-by: Alexandre Belloni --- drivers/rtc/dev.c | 19 +++++++++++++++++++ include/uapi/linux/rtc.h | 1 + 2 files changed, 20 insertions(+) diff --git a/drivers/rtc/dev.c b/drivers/rtc/dev.c index 143c097eff0f..abee1fc4705e 100644 --- a/drivers/rtc/dev.c +++ b/drivers/rtc/dev.c @@ -398,6 +398,16 @@ static long rtc_dev_ioctl(struct file *file, param.uvalue = rtc->features[0]; break; + case RTC_PARAM_CORRECTION: + mutex_unlock(&rtc->ops_lock); + if (param.index != 0) + return -EINVAL; + err = rtc_read_offset(rtc, &offset); + mutex_lock(&rtc->ops_lock); + if (err == 0) + param.svalue = offset; + break; + default: err = -EINVAL; } @@ -416,6 +426,15 @@ static long rtc_dev_ioctl(struct file *file, switch(param.param) { case RTC_PARAM_FEATURES: + err = -EINVAL; + break; + + case RTC_PARAM_CORRECTION: + mutex_unlock(&rtc->ops_lock); + if (param.index != 0) + return -EINVAL; + return rtc_set_offset(rtc, param.svalue); + default: err = -EINVAL; } diff --git a/include/uapi/linux/rtc.h b/include/uapi/linux/rtc.h index ded2aaab7ec7..04da6c3082b3 100644 --- a/include/uapi/linux/rtc.h +++ b/include/uapi/linux/rtc.h @@ -136,6 +136,7 @@ struct rtc_param { /* parameter list */ #define RTC_PARAM_FEATURES 0 +#define RTC_PARAM_CORRECTION 1 #define RTC_MAX_FREQ 8192 -- 2.31.1