#include <linux/module.h>
#include <linux/rtc.h>
+#include "rtc-core.h"
-static struct class *rtc_dev_class;
static dev_t rtc_devt;
#define RTC_DEV_MAX 16 /* 16 RTCs should be enough for everyone... */
if (!(mutex_trylock(&rtc->char_lock)))
return -EBUSY;
- file->private_data = &rtc->class_dev;
+ file->private_data = rtc;
- err = ops->open ? ops->open(rtc->class_dev.dev) : 0;
+ err = ops->open ? ops->open(rtc->dev.parent) : 0;
if (err == 0) {
spin_lock_irq(&rtc->irq_lock);
rtc->irq_data = 0;
int num = 0;
int err;
- err = rtc_read_time(&rtc->class_dev, &tm);
+ err = rtc_read_time(rtc, &tm);
local_irq_disable();
spin_lock(&rtc->irq_lock);
}
spin_unlock(&rtc->irq_lock);
if (num)
- rtc_update_irq(&rtc->class_dev, num, RTC_UF | RTC_IRQF);
+ rtc_update_irq(rtc, num, RTC_UF | RTC_IRQF);
local_irq_enable();
}
static void rtc_uie_timer(unsigned long data)
struct rtc_time tm;
int err;
- err = rtc_read_time(&rtc->class_dev, &tm);
+ err = rtc_read_time(rtc, &tm);
if (err)
return err;
spin_lock_irq(&rtc->irq_lock);
if (ret == 0) {
/* Check for any data updates */
if (rtc->ops->read_callback)
- data = rtc->ops->read_callback(rtc->class_dev.dev,
+ data = rtc->ops->read_callback(rtc->dev.parent,
data);
if (sizeof(int) != sizeof(long) &&
unsigned int cmd, unsigned long arg)
{
int err = 0;
- struct class_device *class_dev = file->private_data;
- struct rtc_device *rtc = to_rtc_device(class_dev);
+ struct rtc_device *rtc = file->private_data;
const struct rtc_class_ops *ops = rtc->ops;
struct rtc_time tm;
struct rtc_wkalrm alarm;
/* try the driver's ioctl interface */
if (ops->ioctl) {
- err = ops->ioctl(class_dev->dev, cmd, arg);
+ err = ops->ioctl(rtc->dev.parent, cmd, arg);
if (err != -ENOIOCTLCMD)
return err;
}
switch (cmd) {
case RTC_ALM_READ:
- err = rtc_read_alarm(class_dev, &alarm);
+ err = rtc_read_alarm(rtc, &alarm);
if (err < 0)
return err;
alarm.time.tm_wday = -1;
alarm.time.tm_yday = -1;
alarm.time.tm_isdst = -1;
- err = rtc_set_alarm(class_dev, &alarm);
+ err = rtc_set_alarm(rtc, &alarm);
break;
case RTC_RD_TIME:
- err = rtc_read_time(class_dev, &tm);
+ err = rtc_read_time(rtc, &tm);
if (err < 0)
return err;
if (copy_from_user(&tm, uarg, sizeof(tm)))
return -EFAULT;
- err = rtc_set_time(class_dev, &tm);
+ err = rtc_set_time(rtc, &tm);
break;
case RTC_IRQP_READ:
if (ops->irq_set_freq)
- err = put_user(rtc->irq_freq, (unsigned long *) arg);
+ err = put_user(rtc->irq_freq, (unsigned long __user *)uarg);
break;
case RTC_IRQP_SET:
if (ops->irq_set_freq)
- err = rtc_irq_set_freq(class_dev, rtc->irq_task, arg);
+ err = rtc_irq_set_freq(rtc, rtc->irq_task, arg);
break;
#if 0
if (copy_from_user(&alarm, uarg, sizeof(alarm)))
return -EFAULT;
- err = rtc_set_alarm(class_dev, &alarm);
+ err = rtc_set_alarm(rtc, &alarm);
break;
case RTC_WKALM_RD:
- err = rtc_read_alarm(class_dev, &alarm);
+ err = rtc_read_alarm(rtc, &alarm);
if (err < 0)
return err;
clear_uie(rtc);
#endif
if (rtc->ops->release)
- rtc->ops->release(rtc->class_dev.dev);
+ rtc->ops->release(rtc->dev.parent);
mutex_unlock(&rtc->char_lock);
return 0;
return fasync_helper(fd, file, on, &rtc->async_queue);
}
-static struct file_operations rtc_dev_fops = {
+static const struct file_operations rtc_dev_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = rtc_dev_read,
/* insertion/removal hooks */
-static int rtc_dev_add_device(struct class_device *class_dev,
- struct class_interface *class_intf)
+void rtc_dev_add_device(struct rtc_device *rtc)
{
- int err = 0;
- struct rtc_device *rtc = to_rtc_device(class_dev);
+ if (!rtc_devt)
+ return;
if (rtc->id >= RTC_DEV_MAX) {
- dev_err(class_dev->dev, "too many RTCs\n");
- return -EINVAL;
+ pr_debug("%s: too many RTC devices\n", rtc->name);
+ return;
}
+ rtc->dev.devt = MKDEV(MAJOR(rtc_devt), rtc->id);
+
mutex_init(&rtc->char_lock);
spin_lock_init(&rtc->irq_lock);
init_waitqueue_head(&rtc->irq_queue);
cdev_init(&rtc->char_dev, &rtc_dev_fops);
rtc->char_dev.owner = rtc->owner;
- if (cdev_add(&rtc->char_dev, MKDEV(MAJOR(rtc_devt), rtc->id), 1)) {
- dev_err(class_dev->dev,
- "failed to add char device %d:%d\n",
+ if (cdev_add(&rtc->char_dev, rtc->dev.devt, 1))
+ printk(KERN_WARNING "%s: failed to add char device %d:%d\n",
+ rtc->name, MAJOR(rtc_devt), rtc->id);
+ else
+ pr_debug("%s: dev (%d:%d)\n", rtc->name,
MAJOR(rtc_devt), rtc->id);
- return -ENODEV;
- }
-
- rtc->rtc_dev = class_device_create(rtc_dev_class, NULL,
- MKDEV(MAJOR(rtc_devt), rtc->id),
- class_dev->dev, "rtc%d", rtc->id);
- if (IS_ERR(rtc->rtc_dev)) {
- dev_err(class_dev->dev, "cannot create rtc_dev device\n");
- err = PTR_ERR(rtc->rtc_dev);
- goto err_cdev_del;
- }
-
- dev_info(class_dev->dev, "rtc intf: dev (%d:%d)\n",
- MAJOR(rtc->rtc_dev->devt),
- MINOR(rtc->rtc_dev->devt));
-
- return 0;
-
-err_cdev_del:
-
- cdev_del(&rtc->char_dev);
- return err;
}
-static void rtc_dev_remove_device(struct class_device *class_dev,
- struct class_interface *class_intf)
+void rtc_dev_del_device(struct rtc_device *rtc)
{
- struct rtc_device *rtc = to_rtc_device(class_dev);
-
- if (rtc->rtc_dev) {
- dev_dbg(class_dev->dev, "removing char %d:%d\n",
- MAJOR(rtc->rtc_dev->devt),
- MINOR(rtc->rtc_dev->devt));
-
- class_device_unregister(rtc->rtc_dev);
+ if (rtc->dev.devt)
cdev_del(&rtc->char_dev);
- }
}
-/* interface registration */
-
-static struct class_interface rtc_dev_interface = {
- .add = &rtc_dev_add_device,
- .remove = &rtc_dev_remove_device,
-};
-
-static int __init rtc_dev_init(void)
+void __init rtc_dev_init(void)
{
int err;
- rtc_dev_class = class_create(THIS_MODULE, "rtc-dev");
- if (IS_ERR(rtc_dev_class))
- return PTR_ERR(rtc_dev_class);
-
err = alloc_chrdev_region(&rtc_devt, 0, RTC_DEV_MAX, "rtc");
- if (err < 0) {
+ if (err < 0)
printk(KERN_ERR "%s: failed to allocate char dev region\n",
__FILE__);
- goto err_destroy_class;
- }
-
- err = rtc_interface_register(&rtc_dev_interface);
- if (err < 0) {
- printk(KERN_ERR "%s: failed to register the interface\n",
- __FILE__);
- goto err_unregister_chrdev;
- }
-
- return 0;
-
-err_unregister_chrdev:
- unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
-
-err_destroy_class:
- class_destroy(rtc_dev_class);
-
- return err;
}
-static void __exit rtc_dev_exit(void)
+void __exit rtc_dev_exit(void)
{
- class_interface_unregister(&rtc_dev_interface);
- class_destroy(rtc_dev_class);
- unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
+ if (rtc_devt)
+ unregister_chrdev_region(rtc_devt, RTC_DEV_MAX);
}
-
-subsys_initcall(rtc_dev_init);
-module_exit(rtc_dev_exit);
-
-MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
-MODULE_DESCRIPTION("RTC class dev interface");
-MODULE_LICENSE("GPL");
projects / powerpc.git / blobdiff