[rtc-linux] Re: [PATCH 1/9] rtc-pcf2123: Document all registers and useful bits

[Joshua Clayton <stillcompiling@gmail.com>]

On Tue, 24 Nov 2015 22:51:36 +0100
Alexandre Belloni <alexandre.belloni@free-electrons.com> wrote:

> Hi,
> 
> On 04/11/2015 at 07:36:32 -0800, Joshua Clayton wrote :
> > Document all 16 registers in the pcf2123, as well as
> > useful bit masks from the Control1 and seconds registers
> > 
> > Signed-off-by: Joshua Clayton <stillcompiling@gmail.com>
> > ---
> >  drivers/rtc/rtc-pcf2123.c | 23 ++++++++++++++++++++++-
> >  1 file changed, 22 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
> > index d1953bb..7756210 100644
> > --- a/drivers/rtc/rtc-pcf2123.c
> > +++ b/drivers/rtc/rtc-pcf2123.c
> > @@ -47,6 +47,7 @@
> >  
> >  #define DRV_VERSION "0.6"
> >  
> > +/* REGISTERS */
> >  #define PCF2123_REG_CTRL1	(0x00)	/* Control Register
> > 1 */ #define PCF2123_REG_CTRL2	(0x01)	/* Control
> > Register 2 */ #define PCF2123_REG_SC
> > (0x02)	/* datetime */ @@ -56,7 +57,27 @@
> >  #define PCF2123_REG_DW		(0x06)
> >  #define PCF2123_REG_MO		(0x07)
> >  #define PCF2123_REG_YR		(0x08)
> > -
> > +#define PCF2123_REG_ALRM_MN	(0x09)	/* Alarm
> > Registers */ +#define PCF2123_REG_ALRM_HR	(0x0a)
> > +#define PCF2123_REG_ALRM_DM	(0x0b)
> > +#define PCF2123_REG_ALRM_DW	(0x0c)
> > +#define PCF2123_REG_OFFSET	(0x0d)	/* Clock Rate
> > Offset Register */ +#define PCF2123_REG_TMR_CLKOUT
> > (0x0e)	/* Timer Registers */ +#define
> > PCF2123_REG_CTDWN_TMR	(0x0f) +#define
> > PCF2123_REG_MAX		(PCF2123_REG_CTDWN_TMR) +
> > +/* PCF2123_REG_CTRL1 BITS */
> > +#define CTRL1_CLEAR		(0x00)	/* Clear */
> > +#define CTRL1_CORRECTION_INT	(0x02)	/* Correction
> > Interrupt */ +#define CTRL1_12_HOUR		(0x04)	/*
> > 12 hour time */ +#define CTRL1_STOP		(0x20)	/*
> > Stop the clock */ +#define CTRL1_SW_RESET
> > (0x58)	/* Software reset */ +#define
> > CTRL1_EXT_TEST		(0x80)	/* External Clock Test
> > mode */ + +/* PCF2123_REG_SC BITS */
> > +#define OSC_HAS_STOPPED		(0x80)	/* Clock has
> > been stopped */ +
> 
> Can you use the BIT() macro?
> 
> 

Sure. I Will change that in v2

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