[PATCH 2/5] rtc: pcf2127: let the core handle rtc range

From: Alexandre Belloni
Date: Tue May 05 2020 - 16:13:48 EST


Let the core handle offsetting and windowing the RTC range.

Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
---
drivers/rtc/rtc-pcf2127.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index 4e50d6768f13..136709baaa88 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -137,8 +137,7 @@ static int pcf2127_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_wday = buf[PCF2127_REG_DW] & 0x07;
tm->tm_mon = bcd2bin(buf[PCF2127_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
tm->tm_year = bcd2bin(buf[PCF2127_REG_YR]);
- if (tm->tm_year < 70)
- tm->tm_year += 100; /* assume we are in 1970...2069 */
+ tm->tm_year += 100;

dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
"mday=%d, mon=%d, year=%d, wday=%d\n",
@@ -172,7 +171,7 @@ static int pcf2127_rtc_set_time(struct device *dev, struct rtc_time *tm)
buf[i++] = bin2bcd(tm->tm_mon + 1);

/* year */
- buf[i++] = bin2bcd(tm->tm_year % 100);
+ buf[i++] = bin2bcd(tm->tm_year - 100);

/* write register's data */
err = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_SC, buf, i);
@@ -433,6 +432,9 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
return PTR_ERR(pcf2127->rtc);

pcf2127->rtc->ops = &pcf2127_rtc_ops;
+ pcf2127->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ pcf2127->rtc->range_max = RTC_TIMESTAMP_END_2099;
+ pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */

pcf2127->wdd.parent = dev;
pcf2127->wdd.info = &pcf2127_wdt_info;
--
2.26.2