Messages in this thread | | | From | Alexander Stein <> | 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 |
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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 <alexander.stein@systec-electronic.com> > --- > 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
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