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rtc: ab-b5ze-s3: let the core handle the RTC range 

The ab-b5ze-s3 RTC is storing the year in an 8bit bcd coded register so it
can handle dates from year 2000 to year 2099.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-05-17 22:20:40 +02:00
parent 8bde032b28
commit c402f8ead6
1 changed files with 2 additions and 9 deletions
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11
drivers/rtc/rtc-ab-b5ze-s3.c
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@ -265,15 +265,6 @@ static int abb5zes3_rtc_set_time(struct device *dev, struct rtc_time *tm)
u8 regs[ABB5ZES3_REG_RTC_SC + ABB5ZES3_RTC_SEC_LEN];
int ret;
/*
* Year register is 8-bit wide and bcd-coded, i.e records values
* between 0 and 99. tm_year is an offset from 1900 and we are
* interested in the 2000-2099 range, so any value less than 100
* is invalid.
*/
if (tm->tm_year < 100)
return -EINVAL;
regs[ABB5ZES3_REG_RTC_SC] = bin2bcd(tm->tm_sec); /* MSB=0 clears OSC */
regs[ABB5ZES3_REG_RTC_MN] = bin2bcd(tm->tm_min);
regs[ABB5ZES3_REG_RTC_HR] = bin2bcd(tm->tm_hour); /* 24-hour format */
@ -951,6 +942,8 @@ static int abb5zes3_probe(struct i2c_client *client,
}
data->rtc->ops = &rtc_ops;
data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
data->rtc->range_max = RTC_TIMESTAMP_END_2099;
/* Enable battery low detection interrupt if battery not already low */
if (!data->battery_low && data->irq) {