Messages in this thread | | | Date | Wed, 19 Dec 2012 15:42:26 +0100 | From | Thierry Reding <> | Subject | Re: [PATCH] rtc-pcf8523: Add low battery voltage support |
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On Wed, Dec 19, 2012 at 03:04:56PM +0100, Jesper Nilsson wrote: > This patch implements reading of the battery voltage low signal for > rtc-pcf8523. > > The bit is read-only and cannot be cleared by software, so no > clear-function is implemented. > > Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> > --- > diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c > index be05a64..82a9895 100644 > --- a/drivers/rtc/rtc-pcf8523.c > +++ b/drivers/rtc/rtc-pcf8523.c > @@ -23,6 +23,7 @@ > #define REG_CONTROL3_PM_VDD (1 << 6) /* switch-over disabled */ > #define REG_CONTROL3_PM_DSM (1 << 5) /* direct switching mode */ > #define REG_CONTROL3_PM_MASK 0xe0 > +#define REG_CONTROL3_BLF (1 << 2) /* Battery low bit, read-only */
Nit: "battery" since you don't have a full sentence.
> > #define REG_SECONDS 0x03 > #define REG_SECONDS_OS (1 << 7) > @@ -250,9 +252,29 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm) > return pcf8523_start_rtc(client); > } > > +static int pcf8523_rtc_read_vl(struct device *dev, int *vl) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + u8 value; > + int err; > + > + err = pcf8523_read(client, REG_CONTROL3, &value); > + if (err < 0) > + return err; > + > + if (value & REG_CONTROL3_BLF) > + *vl = 1; > + else > + *vl = 0; > + > + return 0; > +} > + > +
That's one blank line too much.
> static const struct rtc_class_ops pcf8523_rtc_ops = { > - .read_time = pcf8523_rtc_read_time, > - .set_time = pcf8523_rtc_set_time, > + .read_time = pcf8523_rtc_read_time, > + .set_time = pcf8523_rtc_set_time,
Maybe you shouldn't reindent these, but rather adopt the existing style instead.
> + .read_vl = pcf8523_rtc_read_vl,
What tree is this based on? None of the trees I have contains .read_vl in rtc_class_ops.
Thierry [unhandled content-type:application/pgp-signature] | |