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rtc: rzn1: drop superfluous wday calculation

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The week register simply counts from 0 to 6 where the numbers do not
even represent a specific weekday. So we can adopt 'tm_wday' numbering
of the RTC core without converting it.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20241122101448.4374-2-wsa+renesas@sang-engineering.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Wolfram Sang 2024-11-22 11:14:47 +01:00 committed by Alexandre Belloni
parent 1ec371bab2
commit 692f983b2d
1 changed files with 0 additions and 15 deletions
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15
drivers/rtc/rtc-rzn1.c
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@ -75,19 +75,6 @@ static void rzn1_rtc_get_time_snapshot(struct rzn1_rtc *rtc, struct rtc_time *tm
tm->tm_year = readl(rtc->base + RZN1_RTC_YEARC);
}
static unsigned int rzn1_rtc_tm_to_wday(struct rtc_time *tm)
{
time64_t time;
unsigned int days;
u32 secs;
time = rtc_tm_to_time64(tm);
days = div_s64_rem(time, 86400, &secs);
/* day of the week, 1970-01-01 was a Thursday */
return (days + 4) % 7;
}
static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct rzn1_rtc *rtc = dev_get_drvdata(dev);
@ -109,7 +96,6 @@ static int rzn1_rtc_read_time(struct device *dev, struct rtc_time *tm)
tm->tm_sec = bcd2bin(tm->tm_sec);
tm->tm_min = bcd2bin(tm->tm_min);
tm->tm_hour = bcd2bin(tm->tm_hour);
tm->tm_wday = bcd2bin(tm->tm_wday);
tm->tm_mday = bcd2bin(tm->tm_mday);
tm->tm_mon = bcd2bin(tm->tm_mon) - 1;
tm->tm_year = bcd2bin(tm->tm_year) + 100;
@ -126,7 +112,6 @@ static int rzn1_rtc_set_time(struct device *dev, struct rtc_time *tm)
tm->tm_sec = bin2bcd(tm->tm_sec);
tm->tm_min = bin2bcd(tm->tm_min);
tm->tm_hour = bin2bcd(tm->tm_hour);
tm->tm_wday = bin2bcd(rzn1_rtc_tm_to_wday(tm));
tm->tm_mday = bin2bcd(tm->tm_mday);
tm->tm_mon = bin2bcd(tm->tm_mon + 1);
tm->tm_year = bin2bcd(tm->tm_year - 100);