From patchwork Wed Aug 16 14:20:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13355261 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6FF2FC04A6A for ; Wed, 16 Aug 2023 14:21:09 +0000 (UTC) Received: from relmlie5.idc.renesas.com (relmlie5.idc.renesas.com [210.160.252.171]) by mx.groups.io with SMTP id smtpd.web10.162057.1692195660973914437 for ; Wed, 16 Aug 2023 07:21:01 -0700 Authentication-Results: mx.groups.io; dkim=none (message not signed); spf=pass (domain: bp.renesas.com, ip: 210.160.252.171, mailfrom: biju.das.jz@bp.renesas.com) X-IronPort-AV: E=Sophos;i="6.01,177,1684767600"; d="scan'208";a="173100222" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 16 Aug 2023 23:21:00 +0900 Received: from localhost.localdomain (unknown [10.226.92.162]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 9844F4210C25; Wed, 16 Aug 2023 23:20:58 +0900 (JST) From: Biju Das To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Cc: Biju Das , Claudiu Beznea Subject: [PATCH 5.10.y-cip 16/31] rtc: expose correction feature Date: Wed, 16 Aug 2023 15:20:02 +0100 Message-Id: <20230816142017.147173-17-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230816142017.147173-1-biju.das.jz@bp.renesas.com> References: <20230816142017.147173-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 16 Aug 2023 14:21:09 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/12698 From: Alexandre Belloni commit 2268551935dbf1abcbb4d4fb7b1ad74dbe0d1be0 upstream. Add a new feature for RTCs able to correct the oscillator imprecision. This is also called offset or trimming. Such drivers have a .set_offset callback, use that to set the feature bit from the core. Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20211018151933.76865-4-alexandre.belloni@bootlin.com Signed-off-by: Biju Das --- drivers/rtc/class.c | 3 +++ include/uapi/linux/rtc.h | 3 ++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c index edd84ee38005..f521b90fa182 100644 --- a/drivers/rtc/class.c +++ b/drivers/rtc/class.c @@ -398,6 +398,9 @@ int __devm_rtc_register_device(struct module *owner, struct rtc_device *rtc) if (!rtc->ops->set_alarm) clear_bit(RTC_FEATURE_ALARM, rtc->features); + if (rtc->ops->set_offset) + set_bit(RTC_FEATURE_CORRECTION, rtc->features); + rtc->owner = owner; rtc_device_get_offset(rtc); diff --git a/include/uapi/linux/rtc.h b/include/uapi/linux/rtc.h index f4037c541925..ef5113d061c4 100644 --- a/include/uapi/linux/rtc.h +++ b/include/uapi/linux/rtc.h @@ -116,7 +116,8 @@ struct rtc_pll_info { #define RTC_FEATURE_NEED_WEEK_DAY 2 #define RTC_FEATURE_ALARM_RES_2S 3 #define RTC_FEATURE_UPDATE_INTERRUPT 4 -#define RTC_FEATURE_CNT 5 +#define RTC_FEATURE_CORRECTION 5 +#define RTC_FEATURE_CNT 6 #define RTC_MAX_FREQ 8192