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authorDavid Brownell <david-b@pacbell.net>2006-11-25 14:09:27 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-11-25 16:28:33 -0500
commit2601a46474db2dcbc08ee690e56f08a10abe65cb (patch)
tree3b6ffb34023a252599b08b045db100a6ca6bfff7 /drivers/rtc
parent7531d8faa85f8880db433027bf2b04950e49baeb (diff)
[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>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/interface.c1
-rw-r--r--drivers/rtc/rtc-dev.c13
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 579cd667b16f..4783ec68fb3c 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -265,3 +265,4 @@ int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int
265 } 265 }
266 return err; 266 return err;
267} 267}
268EXPORT_SYMBOL_GPL(rtc_irq_set_freq);
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 583789c66cdb..3109865e8d73 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -214,7 +214,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
214 struct rtc_wkalrm alarm; 214 struct rtc_wkalrm alarm;
215 void __user *uarg = (void __user *) arg; 215 void __user *uarg = (void __user *) arg;
216 216
217 /* check that the calles has appropriate permissions 217 /* check that the calling task has appropriate permissions
218 * for certain ioctls. doing this check here is useful 218 * for certain ioctls. doing this check here is useful
219 * to avoid duplicate code in each driver. 219 * to avoid duplicate code in each driver.
220 */ 220 */
@@ -299,6 +299,17 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
299 299
300 err = rtc_set_time(class_dev, &tm); 300 err = rtc_set_time(class_dev, &tm);
301 break; 301 break;
302
303 case RTC_IRQP_READ:
304 if (ops->irq_set_freq)
305 err = put_user(rtc->irq_freq, (unsigned long *) arg);
306 break;
307
308 case RTC_IRQP_SET:
309 if (ops->irq_set_freq)
310 err = rtc_irq_set_freq(class_dev, rtc->irq_task, arg);
311 break;
312
302#if 0 313#if 0
303 case RTC_EPOCH_SET: 314 case RTC_EPOCH_SET:
304#ifndef rtc_epoch 315#ifndef rtc_epoch