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-rw-r--r--drivers/rtc/rtc-da9052.c2
-rw-r--r--drivers/rtc/rtc-isl12022.c2
-rw-r--r--drivers/rtc/rtc-m48t35.c2
-rw-r--r--drivers/rtc/rtc-pcf8563.c2
-rw-r--r--drivers/rtc/rtc-pcf8583.c2
-rw-r--r--drivers/rtc/rtc-stmp3xxx.c35
-rw-r--r--drivers/rtc/rtc-sysfs.c48
-rw-r--r--drivers/rtc/rtc-twl.c3
8 files changed, 56 insertions, 40 deletions
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index 9c8c19441cc..4385ca4503d 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -250,7 +250,7 @@ static int da9052_rtc_probe(struct platform_device *pdev)
rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&da9052_rtc_ops, THIS_MODULE);
- return PTR_RET(rtc->rtc);
+ return PTR_ERR_OR_ZERO(rtc->rtc);
}
static struct platform_driver da9052_rtc_driver = {
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index 5dbdc440571..03b89112942 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -268,7 +268,7 @@ static int isl12022_probe(struct i2c_client *client,
isl12022->rtc = devm_rtc_device_register(&client->dev,
isl12022_driver.driver.name,
&isl12022_rtc_ops, THIS_MODULE);
- return PTR_RET(isl12022->rtc);
+ return PTR_ERR_OR_ZERO(isl12022->rtc);
}
static const struct i2c_device_id isl12022_id[] = {
diff --git a/drivers/rtc/rtc-m48t35.c b/drivers/rtc/rtc-m48t35.c
index 23c3779a5f2..411adb3f86a 100644
--- a/drivers/rtc/rtc-m48t35.c
+++ b/drivers/rtc/rtc-m48t35.c
@@ -175,7 +175,7 @@ static int m48t35_probe(struct platform_device *pdev)
priv->rtc = devm_rtc_device_register(&pdev->dev, "m48t35",
&m48t35_ops, THIS_MODULE);
- return PTR_RET(priv->rtc);
+ return PTR_ERR_OR_ZERO(priv->rtc);
}
static struct platform_driver m48t35_platform_driver = {
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 710c3a5aa6f..63b558c4819 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -264,7 +264,7 @@ static int pcf8563_probe(struct i2c_client *client,
pcf8563_driver.driver.name,
&pcf8563_rtc_ops, THIS_MODULE);
- return PTR_RET(pcf8563->rtc);
+ return PTR_ERR_OR_ZERO(pcf8563->rtc);
}
static const struct i2c_device_id pcf8563_id[] = {
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c
index 843a745c42f..c2639845186 100644
--- a/drivers/rtc/rtc-pcf8583.c
+++ b/drivers/rtc/rtc-pcf8583.c
@@ -285,7 +285,7 @@ static int pcf8583_probe(struct i2c_client *client,
pcf8583_driver.driver.name,
&pcf8583_rtc_ops, THIS_MODULE);
- return PTR_RET(pcf8583->rtc);
+ return PTR_ERR_OR_ZERO(pcf8583->rtc);
}
static const struct i2c_device_id pcf8583_id[] = {
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 767fee2ab34..26019531db1 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
+#include <linux/delay.h>
#include <linux/rtc.h>
#include <linux/slab.h>
#include <linux/of_device.h>
@@ -119,24 +120,39 @@ static void stmp3xxx_wdt_register(struct platform_device *rtc_pdev)
}
#endif /* CONFIG_STMP3XXX_RTC_WATCHDOG */
-static void stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data)
+static int stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data)
{
+ int timeout = 5000; /* 3ms according to i.MX28 Ref Manual */
/*
- * The datasheet doesn't say which way round the
- * NEW_REGS/STALE_REGS bitfields go. In fact it's 0x1=P0,
- * 0x2=P1, .., 0x20=P5, 0x40=ALARM, 0x80=SECONDS
+ * The i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
+ * states:
+ * | The order in which registers are updated is
+ * | Persistent 0, 1, 2, 3, 4, 5, Alarm, Seconds.
+ * | (This list is in bitfield order, from LSB to MSB, as they would
+ * | appear in the STALE_REGS and NEW_REGS bitfields of the HW_RTC_STAT
+ * | register. For example, the Seconds register corresponds to
+ * | STALE_REGS or NEW_REGS containing 0x80.)
*/
- while (readl(rtc_data->io + STMP3XXX_RTC_STAT) &
- (0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT))
- cpu_relax();
+ do {
+ if (!(readl(rtc_data->io + STMP3XXX_RTC_STAT) &
+ (0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT)))
+ return 0;
+ udelay(1);
+ } while (--timeout > 0);
+ return (readl(rtc_data->io + STMP3XXX_RTC_STAT) &
+ (0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT)) ? -ETIME : 0;
}
/* Time read/write */
static int stmp3xxx_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
{
+ int ret;
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
- stmp3xxx_wait_time(rtc_data);
+ ret = stmp3xxx_wait_time(rtc_data);
+ if (ret)
+ return ret;
+
rtc_time_to_tm(readl(rtc_data->io + STMP3XXX_RTC_SECONDS), rtc_tm);
return 0;
}
@@ -146,8 +162,7 @@ static int stmp3xxx_rtc_set_mmss(struct device *dev, unsigned long t)
struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev);
writel(t, rtc_data->io + STMP3XXX_RTC_SECONDS);
- stmp3xxx_wait_time(rtc_data);
- return 0;
+ return stmp3xxx_wait_time(rtc_data);
}
/* interrupt(s) handler */
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 4b26f8672b2..babd43bf3dd 100644
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -25,15 +25,14 @@
*/
static ssize_t
-rtc_sysfs_show_name(struct device *dev, struct device_attribute *attr,
- char *buf)
+name_show(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", to_rtc_device(dev)->name);
}
+static DEVICE_ATTR_RO(name);
static ssize_t
-rtc_sysfs_show_date(struct device *dev, struct device_attribute *attr,
- char *buf)
+date_show(struct device *dev, struct device_attribute *attr, char *buf)
{
ssize_t retval;
struct rtc_time tm;
@@ -46,10 +45,10 @@ rtc_sysfs_show_date(struct device *dev, struct device_attribute *attr,
return retval;
}
+static DEVICE_ATTR_RO(date);
static ssize_t
-rtc_sysfs_show_time(struct device *dev, struct device_attribute *attr,
- char *buf)
+time_show(struct device *dev, struct device_attribute *attr, char *buf)
{
ssize_t retval;
struct rtc_time tm;
@@ -62,10 +61,10 @@ rtc_sysfs_show_time(struct device *dev, struct device_attribute *attr,
return retval;
}
+static DEVICE_ATTR_RO(time);
static ssize_t
-rtc_sysfs_show_since_epoch(struct device *dev, struct device_attribute *attr,
- char *buf)
+since_epoch_show(struct device *dev, struct device_attribute *attr, char *buf)
{
ssize_t retval;
struct rtc_time tm;
@@ -79,16 +78,16 @@ rtc_sysfs_show_since_epoch(struct device *dev, struct device_attribute *attr,
return retval;
}
+static DEVICE_ATTR_RO(since_epoch);
static ssize_t
-rtc_sysfs_show_max_user_freq(struct device *dev, struct device_attribute *attr,
- char *buf)
+max_user_freq_show(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%d\n", to_rtc_device(dev)->max_user_freq);
}
static ssize_t
-rtc_sysfs_set_max_user_freq(struct device *dev, struct device_attribute *attr,
+max_user_freq_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t n)
{
struct rtc_device *rtc = to_rtc_device(dev);
@@ -101,6 +100,7 @@ rtc_sysfs_set_max_user_freq(struct device *dev, struct device_attribute *attr,
return n;
}
+static DEVICE_ATTR_RW(max_user_freq);
/**
* rtc_sysfs_show_hctosys - indicate if the given RTC set the system time
@@ -109,8 +109,7 @@ rtc_sysfs_set_max_user_freq(struct device *dev, struct device_attribute *attr,
* boot or resume event.
*/
static ssize_t
-rtc_sysfs_show_hctosys(struct device *dev, struct device_attribute *attr,
- char *buf)
+hctosys_show(struct device *dev, struct device_attribute *attr, char *buf)
{
#ifdef CONFIG_RTC_HCTOSYS_DEVICE
if (rtc_hctosys_ret == 0 &&
@@ -121,17 +120,18 @@ rtc_sysfs_show_hctosys(struct device *dev, struct device_attribute *attr,
#endif
return sprintf(buf, "0\n");
}
-
-static struct device_attribute rtc_attrs[] = {
- __ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL),
- __ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL),
- __ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL),
- __ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL),
- __ATTR(max_user_freq, S_IRUGO | S_IWUSR, rtc_sysfs_show_max_user_freq,
- rtc_sysfs_set_max_user_freq),
- __ATTR(hctosys, S_IRUGO, rtc_sysfs_show_hctosys, NULL),
- { },
+static DEVICE_ATTR_RO(hctosys);
+
+static struct attribute *rtc_attrs[] = {
+ &dev_attr_name.attr,
+ &dev_attr_date.attr,
+ &dev_attr_time.attr,
+ &dev_attr_since_epoch.attr,
+ &dev_attr_max_user_freq.attr,
+ &dev_attr_hctosys.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(rtc);
static ssize_t
rtc_sysfs_show_wakealarm(struct device *dev, struct device_attribute *attr,
@@ -261,5 +261,5 @@ void rtc_sysfs_del_device(struct rtc_device *rtc)
void __init rtc_sysfs_init(struct class *rtc_class)
{
- rtc_class->dev_attrs = rtc_attrs;
+ rtc_class->dev_groups = rtc_groups;
}
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 02faf3c4e0d..c2e80d7ca5e 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -524,6 +524,8 @@ static int twl_rtc_probe(struct platform_device *pdev)
if (ret < 0)
goto out1;
+ device_init_wakeup(&pdev->dev, 1);
+
rtc = rtc_device_register(pdev->name,
&pdev->dev, &twl_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
@@ -542,7 +544,6 @@ static int twl_rtc_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, rtc);
- device_init_wakeup(&pdev->dev, 1);
return 0;
out2:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 22:41:30 +0000