From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: linux-rtc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Chen-Yu Tsai <wens@csie.org>,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH 5/5] rtc: pcf8563: let the core handle range offsetting
Date: Thu, 29 Aug 2019 23:25:47 +0200 [thread overview]
Message-ID: <20190829212547.19185-5-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20190829212547.19185-1-alexandre.belloni@bootlin.com>
Set the RTC range properly and use the core windowing and offsetting to
(unfortunately) map back to a 1970-2069 range.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-pcf8563.c | 9 +++++----
1 file 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,
--
2.21.0
prev parent reply other threads:[~2019-08-29 21:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 21:25 [PATCH 1/5] rtc: pcf8563: add Epson RTC8564 compatible Alexandre Belloni
2019-08-29 21:25 ` [PATCH 2/5] rtc: pcf8563: add Microcrystal RV8564 compatible Alexandre Belloni
2019-08-29 21:25 ` [PATCH 3/5] rtc: pcf8563: convert to devm_rtc_allocate_device Alexandre Belloni
2019-08-29 21:25 ` [PATCH 4/5] rtc: pcf8563: remove useless indirection Alexandre Belloni
2019-08-29 21:25 ` Alexandre Belloni [this message]
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