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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3CE86C2D0CB for ; Sat, 14 Dec 2019 22:03:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1CC0D2073D for ; Sat, 14 Dec 2019 22:03:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727144AbfLNWDH (ORCPT ); Sat, 14 Dec 2019 17:03:07 -0500 Received: from relay5-d.mail.gandi.net ([217.70.183.197]:58119 "EHLO relay5-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726792AbfLNWDE (ORCPT ); Sat, 14 Dec 2019 17:03:04 -0500 X-Originating-IP: 90.65.92.102 Received: from localhost (lfbn-lyo-1-1913-102.w90-65.abo.wanadoo.fr [90.65.92.102]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 250C11C0005; Sat, 14 Dec 2019 22:03:02 +0000 (UTC) From: Alexandre Belloni To: linux-rtc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Alexandre Belloni Subject: [PATCH 02/17] rtc: Document RTC_VL_READ and RTC_VL_CLR ioctls Date: Sat, 14 Dec 2019 23:02:44 +0100 Message-Id: <20191214220259.621996-3-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191214220259.621996-1-alexandre.belloni@bootlin.com> References: <20191214220259.621996-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RTC_VL_READ and RTC_VL_CLR have been introduced in 2012 with commit 0f20b767e20a ("drivers/rtc/rtc-pcf8563.c: add RTC_VL_READ/RTC_VL_CLR ioctl feature") Document them now that they have been unified. Signed-off-by: Alexandre Belloni --- Documentation/ABI/testing/rtc-cdev | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/ABI/testing/rtc-cdev b/Documentation/ABI/testing/rtc-cdev index 97447283f13b..25910c3c3d7e 100644 --- a/Documentation/ABI/testing/rtc-cdev +++ b/Documentation/ABI/testing/rtc-cdev @@ -33,6 +33,14 @@ Description: Requires a separate RTC_PIE_ON call to enable the periodic interrupts. + * RTC_VL_READ: Read the voltage inputs status of the RTC when + supported. The value is a bit field of RTC_VL_*, giving the + status of the main and backup voltages. + + * RTC_VL_CLEAR: Clear the voltage status of the RTC. Some RTCs + need user interaction when the backup power provider is + replaced or charged to be able to clear the status. + The ioctl() calls supported by the older /dev/rtc interface are also supported by the newer RTC class framework. However, because the chips and systems are not standardized, some PC/AT -- 2.23.0