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rtc: pcf8523: set range

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Set the th RTC range, it is a classic BCD RTC, considering 00 as a leap
year. Let the core handle range checking.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201118002747.1346504-2-alexandre.belloni@bootlin.com
This commit is contained in:
Alexandre Belloni 2020-11-18 01:27:46 +01:00
parent 886144058d
commit 219cc0f918
1 changed files with 2 additions and 11 deletions
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13
drivers/rtc/rtc-pcf8523.c
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@ -226,17 +226,6 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
u8 regs[8];
int err;
/*
* The hardware can only store values between 0 and 99 in it's YEAR
* register (with 99 overflowing to 0 on increment).
* After 2100-02-28 we could start interpreting the year to be in the
* interval [2100, 2199], but there is no path to switch in a smooth way
* because the chip handles YEAR=0x00 (and the out-of-spec
* YEAR=0xa0) as a leap year, but 2100 isn't.
*/
if (tm->tm_year < 100 || tm->tm_year >= 200)
return -EINVAL;
err = pcf8523_stop_rtc(client);
if (err < 0)
return err;
@ -361,6 +350,8 @@ static int pcf8523_probe(struct i2c_client *client,
return PTR_ERR(rtc);
rtc->ops = &pcf8523_rtc_ops;
rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
rtc->range_max = RTC_TIMESTAMP_END_2099;
return devm_rtc_register_device(rtc);
}