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[PATCH] at91_rtc updates

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Various bug fixes to the at91rm9200 RTC:

 - alarm:  setalarm() should pay attention to the "enabled" flag

 - init:  cleaner handling of the wakeup flags, which cpu init should
   really have set up.  Doing it here is just a workaround.

 - linkage:  since the at91_rtc driver probe() routine is in the init
   section, it should use platform_driver_probe() instead of leaving
   that pointer around in the driver struct after init section removal.

 - linkage:  likewise, remove() belongs in the exit section.

Among other things, the init and alarm changes ensure that this driver
handles the new sysfs "wakealarm" attribute properly.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Brownell 2007-02-20 13:58:14 -08:00 committed by Linus Torvalds
parent 32b49da46c
commit 5d4675a811
1 changed files with 13 additions and 6 deletions
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19
drivers/rtc/rtc-at91rm9200.c
View file

@ -164,6 +164,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
tm.tm_min = alrm->time.tm_min;
tm.tm_sec = alrm->time.tm_sec;
at91_sys_write(AT91_RTC_IDR, AT91_RTC_ALARM);
at91_sys_write(AT91_RTC_TIMALR,
BIN2BCD(tm.tm_sec) << 0
| BIN2BCD(tm.tm_min) << 8
@ -174,6 +175,9 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
| BIN2BCD(tm.tm_mday) << 24
| AT91_RTC_DATEEN | AT91_RTC_MTHEN);
if (alrm->enabled)
at91_sys_write(AT91_RTC_IER, AT91_RTC_ALARM);
pr_debug("%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __FUNCTION__,
at91_alarm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour,
tm.tm_min, tm.tm_sec);
@ -303,6 +307,12 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
return ret;
}
/* cpu init code should really have flagged this device as
* being wake-capable; if it didn't, do that here.
*/
if (!device_can_wakeup(&pdev->dev))
device_init_wakeup(&pdev->dev, 1);
rtc = rtc_device_register(pdev->name, &pdev->dev,
&at91_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
@ -310,7 +320,6 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
return PTR_ERR(rtc);
}
platform_set_drvdata(pdev, rtc);
device_init_wakeup(&pdev->dev, 1);
printk(KERN_INFO "AT91 Real Time Clock driver.\n");
return 0;
@ -319,7 +328,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
/*
* Disable and remove the RTC driver
*/
static int __devexit at91_rtc_remove(struct platform_device *pdev)
static int __exit at91_rtc_remove(struct platform_device *pdev)
{
struct rtc_device *rtc = platform_get_drvdata(pdev);
@ -331,7 +340,6 @@ static int __devexit at91_rtc_remove(struct platform_device *pdev)
rtc_device_unregister(rtc);
platform_set_drvdata(pdev, NULL);
device_init_wakeup(&pdev->dev, 0);
return 0;
}
@ -404,8 +412,7 @@ static int at91_rtc_resume(struct platform_device *pdev)
#endif
static struct platform_driver at91_rtc_driver = {
.probe = at91_rtc_probe,
.remove = at91_rtc_remove,
.remove = __exit_p(at91_rtc_remove),
.suspend = at91_rtc_suspend,
.resume = at91_rtc_resume,
.driver = {
@ -416,7 +423,7 @@ static struct platform_driver at91_rtc_driver = {
static int __init at91_rtc_init(void)
{
return platform_driver_register(&at91_rtc_driver);
return platform_driver_probe(&at91_rtc_driver, at91_rtc_probe);
}
static void __exit at91_rtc_exit(void)