diff options
| author | Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> | 2021-04-20 11:39:17 +0900 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2021-04-29 23:37:18 +0200 |
| commit | 204756f016726a380bafe619438ed979088bd04a (patch) | |
| tree | fb6a1d680c56284899303ed3a8e3b0a5d23ddff8 /drivers/rtc/rtc-ds1307.c | |
| parent | a1cfe7cc3873baf83a26356cb5e10409c6fb942c (diff) | |
| download | linux-204756f016726a380bafe619438ed979088bd04a.tar.gz | |
rtc: ds1307: Fix wday settings for rx8130
rx8130 wday specifies the bit position, not BCD.
Fixes: ee0981be7704 ("rtc: ds1307: Add support for Epson RX8130CE")
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210420023917.1949066-1-nobuhiro1.iwamatsu@toshiba.co.jp
Diffstat (limited to 'drivers/rtc/rtc-ds1307.c')
| -rw-r--r-- | drivers/rtc/rtc-ds1307.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 089509d0a3a0e..336cb9aa5e336 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -293,7 +293,11 @@ static int ds1307_get_time(struct device *dev, struct rtc_time *t) t->tm_min = bcd2bin(regs[DS1307_REG_MIN] & 0x7f); tmp = regs[DS1307_REG_HOUR] & 0x3f; t->tm_hour = bcd2bin(tmp); - t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1; + /* rx8130 is bit position, not BCD */ + if (ds1307->type == rx_8130) + t->tm_wday = fls(regs[DS1307_REG_WDAY] & 0x7f); + else + t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1; t->tm_mday = bcd2bin(regs[DS1307_REG_MDAY] & 0x3f); tmp = regs[DS1307_REG_MONTH] & 0x1f; t->tm_mon = bcd2bin(tmp) - 1; @@ -340,7 +344,11 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t) regs[DS1307_REG_SECS] = bin2bcd(t->tm_sec); regs[DS1307_REG_MIN] = bin2bcd(t->tm_min); regs[DS1307_REG_HOUR] = bin2bcd(t->tm_hour); - regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1); + /* rx8130 is bit position, not BCD */ + if (ds1307->type == rx_8130) + regs[DS1307_REG_WDAY] = 1 << t->tm_wday; + else + regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1); regs[DS1307_REG_MDAY] = bin2bcd(t->tm_mday); regs[DS1307_REG_MONTH] = bin2bcd(t->tm_mon + 1); |