From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755984Ab2CTNQw (ORCPT ); Tue, 20 Mar 2012 09:16:52 -0400 Received: from webbox1416.server-home.net ([77.236.96.61]:58344 "EHLO webbox1416.server-home.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752334Ab2CTNQv (ORCPT ); Tue, 20 Mar 2012 09:16:51 -0400 From: Alexander Stein To: Alessandro Zummo Cc: rtc-linux@googlegroups.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2 RFC] rtc: Add ioctl to get/clear battery low voltage status Date: Tue, 20 Mar 2012 14:16:48 +0100 Message-ID: <10044051.7oD69oyPfX@ws-stein> User-Agent: KMail/4.7.4 (Linux/3.2.1-gentoo-r2; KDE/4.7.4; x86_64; ; ) In-Reply-To: <1329236025-31323-1-git-send-email-alexander.stein@systec-electronic.com> References: <1329236025-31323-1-git-send-email-alexander.stein@systec-electronic.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Any news/feedback on these patches? Regards, Alexander Am Dienstag, 14. Februar 2012, 17:13:44 schrieb Alexander Stein: > Currently there is no generic way to get the RTC battery status within > an application. So add an ioctl to read the status bit. > The idea is that the bit is set once a low voltage is detected. It stays > there until it is reset using the RTC_VL_CLR ioctl. > > Signed-off-by: Alexander Stein > --- > include/linux/rtc.h | 3 +++ > 1 files changed, 3 insertions(+), 0 deletions(-) > > diff --git a/include/linux/rtc.h b/include/linux/rtc.h > index 93f4d03..1a6ec5f 100644 > --- a/include/linux/rtc.h > +++ b/include/linux/rtc.h > @@ -91,6 +91,9 @@ struct rtc_pll_info { > #define RTC_PLL_GET _IOR('p', 0x11, struct rtc_pll_info) /* Get PLL > correction */ #define RTC_PLL_SET _IOW('p', 0x12, struct rtc_pll_info) /* > Set PLL correction */ > > +#define RTC_VL_READ _IOR('p', 0x13, int) /* Voltage low detector */ > +#define RTC_VL_CLR _IO('p', 0x14) /* Clear voltage low information */ > + > /* interrupt flags */ > #define RTC_IRQF 0x80 /* Any of the following is active */ > #define RTC_PF 0x40 /* Periodic interrupt */ -- Dipl.-Inf. Alexander Stein SYS TEC electronic GmbH August-Bebel-Str. 29 D-07973 Greiz Tel: +49-3661-6279-0, Fax: +49-3661-6279-99 eMail: Alexander.Stein@systec-electronic.com Internet: http://www.systec-electronic.com Managing Director: Dipl.-Phys. Siegmar Schmidt Commercial registry: Amtsgericht Jena, HRB 205563