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SubjectRe: [PATCH 1/2 RFC] rtc: Add ioctl to get/clear battery low voltage status
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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

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


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