#include <linux/module.h>
#include <linux/rtc.h>
+#include "rtc-core.h"
+
+
/* device attributes */
-static ssize_t rtc_sysfs_show_name(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_name(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
return sprintf(buf, "%s\n", to_rtc_device(dev)->name);
}
-static CLASS_DEVICE_ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL);
-static ssize_t rtc_sysfs_show_date(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_date(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
ssize_t retval;
struct rtc_time tm;
- retval = rtc_read_time(dev, &tm);
+ retval = rtc_read_time(to_rtc_device(dev), &tm);
if (retval == 0) {
retval = sprintf(buf, "%04d-%02d-%02d\n",
tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday);
return retval;
}
-static CLASS_DEVICE_ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL);
-static ssize_t rtc_sysfs_show_time(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_time(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
ssize_t retval;
struct rtc_time tm;
- retval = rtc_read_time(dev, &tm);
+ retval = rtc_read_time(to_rtc_device(dev), &tm);
if (retval == 0) {
retval = sprintf(buf, "%02d:%02d:%02d\n",
tm.tm_hour, tm.tm_min, tm.tm_sec);
return retval;
}
-static CLASS_DEVICE_ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL);
-static ssize_t rtc_sysfs_show_since_epoch(struct class_device *dev, char *buf)
+static ssize_t
+rtc_sysfs_show_since_epoch(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
ssize_t retval;
struct rtc_time tm;
- retval = rtc_read_time(dev, &tm);
+ retval = rtc_read_time(to_rtc_device(dev), &tm);
if (retval == 0) {
unsigned long time;
rtc_tm_to_time(&tm, &time);
return retval;
}
-static CLASS_DEVICE_ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL);
-
-static struct attribute *rtc_attrs[] = {
- &class_device_attr_name.attr,
- &class_device_attr_date.attr,
- &class_device_attr_time.attr,
- &class_device_attr_since_epoch.attr,
- NULL,
-};
-static struct attribute_group rtc_attr_group = {
- .attrs = rtc_attrs,
+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),
+ { },
};
-
static ssize_t
-rtc_sysfs_show_wakealarm(struct class_device *dev, char *buf)
+rtc_sysfs_show_wakealarm(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
ssize_t retval;
unsigned long alarm;
* REVISIT maybe we should require RTC implementations to
* disable the RTC alarm after it triggers, for uniformity.
*/
- retval = rtc_read_alarm(dev, &alm);
+ retval = rtc_read_alarm(to_rtc_device(dev), &alm);
if (retval == 0 && alm.enabled) {
rtc_tm_to_time(&alm.time, &alarm);
retval = sprintf(buf, "%lu\n", alarm);
}
static ssize_t
-rtc_sysfs_set_wakealarm(struct class_device *dev, const char *buf, size_t n)
+rtc_sysfs_set_wakealarm(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t n)
{
ssize_t retval;
unsigned long now, alarm;
struct rtc_wkalrm alm;
+ struct rtc_device *rtc = to_rtc_device(dev);
/* Only request alarms that trigger in the future. Disable them
* by writing another time, e.g. 0 meaning Jan 1 1970 UTC.
*/
- retval = rtc_read_time(dev, &alm.time);
+ retval = rtc_read_time(rtc, &alm.time);
if (retval < 0)
return retval;
rtc_tm_to_time(&alm.time, &now);
* entirely prevent that here, without even the minimal
* locking from the /dev/rtcN api.
*/
- retval = rtc_read_alarm(dev, &alm);
+ retval = rtc_read_alarm(rtc, &alm);
if (retval < 0)
return retval;
if (alm.enabled)
}
rtc_time_to_tm(alarm, &alm.time);
- retval = rtc_set_alarm(dev, &alm);
+ retval = rtc_set_alarm(rtc, &alm);
return (retval < 0) ? retval : n;
}
-static const CLASS_DEVICE_ATTR(wakealarm, S_IRUGO | S_IWUSR,
+static DEVICE_ATTR(wakealarm, S_IRUGO | S_IWUSR,
rtc_sysfs_show_wakealarm, rtc_sysfs_set_wakealarm);
* suspend-to-disk. So: no attribute unless that side effect is possible.
* (Userspace may disable that mechanism later.)
*/
-static inline int rtc_does_wakealarm(struct class_device *class_dev)
+static inline int rtc_does_wakealarm(struct rtc_device *rtc)
{
- struct rtc_device *rtc;
-
- if (!device_can_wakeup(class_dev->dev))
+ if (!device_can_wakeup(rtc->dev.parent))
return 0;
- rtc = to_rtc_device(class_dev);
return rtc->ops->set_alarm != NULL;
}
-static int rtc_sysfs_add_device(struct class_device *class_dev,
- struct class_interface *class_intf)
+void rtc_sysfs_add_device(struct rtc_device *rtc)
{
int err;
- dev_dbg(class_dev->dev, "rtc intf: sysfs\n");
+ /* not all RTCs support both alarms and wakeup */
+ if (!rtc_does_wakealarm(rtc))
+ return;
- err = sysfs_create_group(&class_dev->kobj, &rtc_attr_group);
+ err = device_create_file(&rtc->dev, &dev_attr_wakealarm);
if (err)
- dev_err(class_dev->dev, "failed to create %s\n",
- "sysfs attributes");
- else if (rtc_does_wakealarm(class_dev)) {
- /* not all RTCs support both alarms and wakeup */
- err = class_device_create_file(class_dev,
- &class_device_attr_wakealarm);
- if (err) {
- dev_err(class_dev->dev, "failed to create %s\n",
- "alarm attribute");
- sysfs_remove_group(&class_dev->kobj, &rtc_attr_group);
- }
- }
-
- return err;
+ dev_err(rtc->dev.parent, "failed to create "
+ "alarm attribute, %d",
+ err);
}
-static void rtc_sysfs_remove_device(struct class_device *class_dev,
- struct class_interface *class_intf)
+void rtc_sysfs_del_device(struct rtc_device *rtc)
{
- if (rtc_does_wakealarm(class_dev))
- class_device_remove_file(class_dev,
- &class_device_attr_wakealarm);
- sysfs_remove_group(&class_dev->kobj, &rtc_attr_group);
+ /* REVISIT did we add it successfully? */
+ if (rtc_does_wakealarm(rtc))
+ device_remove_file(&rtc->dev, &dev_attr_wakealarm);
}
-/* interface registration */
-
-static struct class_interface rtc_sysfs_interface = {
- .add = &rtc_sysfs_add_device,
- .remove = &rtc_sysfs_remove_device,
-};
-
-static int __init rtc_sysfs_init(void)
+void __init rtc_sysfs_init(struct class *rtc_class)
{
- return rtc_interface_register(&rtc_sysfs_interface);
+ rtc_class->dev_attrs = rtc_attrs;
}
-
-static void __exit rtc_sysfs_exit(void)
-{
- class_interface_unregister(&rtc_sysfs_interface);
-}
-
-subsys_initcall(rtc_sysfs_init);
-module_exit(rtc_sysfs_exit);
-
-MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("RTC class sysfs interface");
-MODULE_LICENSE("GPL");
projects / linux-flexiantxendom0-3.2.10.git / blobdiff