diff options
| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-08-30 00:25:47 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-09-01 11:57:47 +0300 |
| commit | f648d40b99ba7363bf4a1bbca5cc93904725dceb (patch) | |
| tree | 321f4f2ed2e5fc3517cfa7b82a43198eef0e6a73 /drivers/rtc | |
| parent | c7d5f6dbd9f9a68374f3d24c63a99691d792fd29 (diff) | |
| download | linux-f648d40b99ba7363bf4a1bbca5cc93904725dceb.tar.xz | |
rtc: pcf8563: let the core handle range offsetting
Set the RTC range properly and use the core windowing and offsetting to
(unfortunately) map back to a 1970-2069 range.
Link: https://lore.kernel.org/r/20190829212547.19185-5-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-pcf8563.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c index 45462ec460a3..24baa4767b11 100644 --- a/drivers/rtc/rtc-pcf8563.c +++ b/drivers/rtc/rtc-pcf8563.c @@ -229,9 +229,7 @@ static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm) tm->tm_mday = bcd2bin(buf[PCF8563_REG_DM] & 0x3F); tm->tm_wday = buf[PCF8563_REG_DW] & 0x07; tm->tm_mon = bcd2bin(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */ - tm->tm_year = bcd2bin(buf[PCF8563_REG_YR]); - if (tm->tm_year < 70) - tm->tm_year += 100; /* assume we are in 1970...2069 */ + tm->tm_year = bcd2bin(buf[PCF8563_REG_YR]) + 100; /* detect the polarity heuristically. see note above. */ pcf8563->c_polarity = (buf[PCF8563_REG_MO] & PCF8563_MO_C) ? (tm->tm_year >= 100) : (tm->tm_year < 100); @@ -268,7 +266,7 @@ static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm) buf[PCF8563_REG_MO] = bin2bcd(tm->tm_mon + 1); /* year and century */ - buf[PCF8563_REG_YR] = bin2bcd(tm->tm_year % 100); + buf[PCF8563_REG_YR] = bin2bcd(tm->tm_year - 100); if (pcf8563->c_polarity ? (tm->tm_year >= 100) : (tm->tm_year < 100)) buf[PCF8563_REG_MO] |= PCF8563_MO_C; @@ -590,6 +588,9 @@ static int pcf8563_probe(struct i2c_client *client, pcf8563->rtc->ops = &pcf8563_rtc_ops; /* the pcf8563 alarm only supports a minute accuracy */ pcf8563->rtc->uie_unsupported = 1; + pcf8563->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + pcf8563->rtc->range_max = RTC_TIMESTAMP_END_2099; + pcf8563->rtc->set_start_time = true; if (client->irq > 0) { err = devm_request_threaded_irq(&client->dev, client->irq, |