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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190829212547.19185-5-alexandre.belloni@bootlin.com \
--to=alexandre.belloni@bootlin.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rtc@vger.kernel.org \
--cc=wens@csie.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.