Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965147AbbDUXaZ (ORCPT ); Tue, 21 Apr 2015 19:30:25 -0400 Received: from down.free-electrons.com ([37.187.137.238]:43174 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752410AbbDUXaY (ORCPT ); Tue, 21 Apr 2015 19:30:24 -0400 Date: Wed, 22 Apr 2015 01:30:22 +0200 From: Alexandre Belloni To: Juergen Borleis Cc: linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com, kernel@pengutronix.de, Alessandro Zummo , linux-arm-kernel@lists.infradead.org, Robert Schwebel Subject: Re: [rtc-linux] [PATCH 4/5] RTC/i.MX/DryIce: when locked, do not fail silently Message-ID: <20150421233022.GE8539@piout.net> References: <1429002716-19821-1-git-send-email-jbe@pengutronix.de> <1429002716-19821-5-git-send-email-jbe@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1429002716-19821-5-git-send-email-jbe@pengutronix.de> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2597 Lines: 77 Please always include a commit message. On 14/04/2015 at 11:11:55 +0200, Juergen Borleis wrote : > Signed-off-by: Juergen Borleis > Signed-off-by: Robert Schwebel > [rsc: got NDA clearance from Freescale] > --- > drivers/rtc/rtc-imxdi.c | 28 +++++++++++++++++++++++++--- > 1 file changed, 25 insertions(+), 3 deletions(-) > > diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c > index b04c64f..de1a2e4 100644 > --- a/drivers/rtc/rtc-imxdi.c > +++ b/drivers/rtc/rtc-imxdi.c > @@ -581,14 +581,36 @@ static int dryice_rtc_read_time(struct device *dev, struct rtc_time *tm) > static int dryice_rtc_set_mmss(struct device *dev, unsigned long secs) > { > struct imxdi_dev *imxdi = dev_get_drvdata(dev); > + u32 dcr, dsr; > int rc; > > + dcr = __raw_readl(imxdi->ioaddr + DCR); > + dsr = __raw_readl(imxdi->ioaddr + DSR); > + > + if (!(dcr & DCR_TCE) || (dsr & DSR_SVF)) { > + if (dcr & DCR_TCHL) { > + /* we are even more out of luck */ > + di_what_is_to_be_done(imxdi, "battery"); > + return -EPERM; > + } > + if ((dcr & DCR_TCSL) || (dsr & DSR_SVF)) { > + /* we are out of luck for now */ > + di_what_is_to_be_done(imxdi, "main"); > + return -EPERM; > + } > + } > + > /* zero the fractional part first */ > rc = di_write_wait(imxdi, 0, DTCLR); > - if (rc == 0) > - rc = di_write_wait(imxdi, secs, DTCMR); > + if (rc != 0) > + return rc; > > - return rc; > + rc = di_write_wait(imxdi, secs, DTCMR); > + if (rc != 0) > + return rc; > + > + return di_write_wait(imxdi, __raw_readl(imxdi->ioaddr + DCR) | > + DCR_TCE, DCR); > } > > static int dryice_rtc_alarm_irq_enable(struct device *dev, > -- > 2.1.4 > > -- > -- > You received this message because you are subscribed to "rtc-linux". > Membership options at http://groups.google.com/group/rtc-linux . > Please read http://groups.google.com/group/rtc-linux/web/checklist > before submitting a driver. > --- > You received this message because you are subscribed to the Google Groups "rtc-linux" group. > To unsubscribe from this group and stop receiving emails from it, send an email to rtc-linux+unsubscribe@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/