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[PATCH] rtc framework handles periodic irqs 

The RTC framework has an irq_set_freq() method that should be used to manage
the periodic IRQ frequency, but the current ioctl logic doesn't know how to do
that.  This patch teaches it how.

This means that drivers implementing irq_set_freq() will automatically support
RTC_IRQP_{READ,SET} ioctls; that logic doesn't need duplication within the
driver.

[akpm@osdl.org: export rtc_irq_set_freq]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Brownell 2006-11-25 11:09:27 -08:00 committed by Linus Torvalds
parent 7531d8faa8
commit 2601a46474
2 changed files with 13 additions and 1 deletions
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1
drivers/rtc/interface.c
View File

@ -265,3 +265,4 @@ int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int
}
return err;
}
EXPORT_SYMBOL_GPL(rtc_irq_set_freq);

13
drivers/rtc/rtc-dev.c
View File

@ -214,7 +214,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
struct rtc_wkalrm alarm;
void __user *uarg = (void __user *) arg;
/* check that the calles has appropriate permissions
/* check that the calling task has appropriate permissions
* for certain ioctls. doing this check here is useful
* to avoid duplicate code in each driver.
*/
@ -299,6 +299,17 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
err = rtc_set_time(class_dev, &tm);
break;
case RTC_IRQP_READ:
if (ops->irq_set_freq)
err = put_user(rtc->irq_freq, (unsigned long *) arg);
break;
case RTC_IRQP_SET:
if (ops->irq_set_freq)
err = rtc_irq_set_freq(class_dev, rtc->irq_task, arg);
break;
#if 0
case RTC_EPOCH_SET:
#ifndef rtc_epoch