diff mbox

[RFC] rtc: try to use set_mmss when set_time is not available

Message ID 20081118004040.4849.59288.stgit@i1501.lan.towertech.it
State Superseded, archived
Headers show

Commit Message

Alessandro Zummo Nov. 18, 2008, 12:40 a.m. UTC 
Drivers should only need to implement either set_mmss
(counter based RTCs) or set_time (most RTCs). The RTC subsystem
will handle the conversion.

Please provide Acked/Tested-bys.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
---

 drivers/rtc/interface.c  |   11 ++++++++---
 drivers/rtc/rtc-ds1672.c |   22 ----------------------
 drivers/rtc/rtc-ep93xx.c |   13 -------------
 3 files changed, 8 insertions(+), 38 deletions(-)



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diff mbox

Patch

diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 56ccc16..110c2c2 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -50,10 +50,15 @@  int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm)
 
 	if (!rtc->ops)
 		err = -ENODEV;
-	else if (!rtc->ops->set_time)
-		err = -EINVAL;
-	else
+	else if (rtc->ops->set_time)
 		err = rtc->ops->set_time(rtc->dev.parent, tm);
+	else if (rtc->ops->set_mmss) {
+		unsigned long secs;
+		err = rtc_tm_to_time(tm, &secs);
+		if (err == 0)
+			err = rtc->ops->set_mmss(rtc->dev.parent, secs);
+	} else
+		err = -EINVAL;
 
 	mutex_unlock(&rtc->ops_lock);
 	return err;
diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c
index cb1b8fe..be404e7 100644
--- a/drivers/rtc/rtc-ds1672.c
+++ b/drivers/rtc/rtc-ds1672.c
@@ -85,32 +85,11 @@  static int ds1672_set_mmss(struct i2c_client *client, unsigned long secs)
 	return 0;
 }
 
-static int ds1672_set_datetime(struct i2c_client *client, struct rtc_time *tm)
-{
-	unsigned long secs;
-
-	dev_dbg(&client->dev,
-		"%s: secs=%d, mins=%d, hours=%d, "
-		"mday=%d, mon=%d, year=%d, wday=%d\n",
-		__func__,
-		tm->tm_sec, tm->tm_min, tm->tm_hour,
-		tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
-
-	rtc_tm_to_time(tm, &secs);
-
-	return ds1672_set_mmss(client, secs);
-}
-
 static int ds1672_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
 	return ds1672_get_datetime(to_i2c_client(dev), tm);
 }
 
-static int ds1672_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
-	return ds1672_set_datetime(to_i2c_client(dev), tm);
-}
-
 static int ds1672_rtc_set_mmss(struct device *dev, unsigned long secs)
 {
 	return ds1672_set_mmss(to_i2c_client(dev), secs);
@@ -154,7 +133,6 @@  static DEVICE_ATTR(control, S_IRUGO, show_control, NULL);
 
 static const struct rtc_class_ops ds1672_rtc_ops = {
 	.read_time = ds1672_rtc_read_time,
-	.set_time = ds1672_rtc_set_time,
 	.set_mmss = ds1672_rtc_set_mmss,
 };
 
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index 36e4ac0..f7a3283 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -49,18 +49,6 @@  static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs)
 	return 0;
 }
 
-static int ep93xx_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
-	int err;
-	unsigned long secs;
-
-	err = rtc_tm_to_time(tm, &secs);
-	if (err != 0)
-		return err;
-
-	return ep93xx_rtc_set_mmss(dev, secs);
-}
-
 static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq)
 {
 	unsigned short preload, delete;
@@ -75,7 +63,6 @@  static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq)
 
 static const struct rtc_class_ops ep93xx_rtc_ops = {
 	.read_time	= ep93xx_rtc_read_time,
-	.set_time	= ep93xx_rtc_set_time,
 	.set_mmss	= ep93xx_rtc_set_mmss,
 	.proc		= ep93xx_rtc_proc,
 };