diff options
| author | David Brownell <david-b@pacbell.net> | 2007-02-20 13:58:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-20 17:10:15 -0800 |
| commit | 32b49da46caa8067ea47eea8b7aee6559e452125 (patch) | |
| tree | 93b8ceb94df70ba912d0a6fd9f7a95d93f059ff6 /drivers/rtc/rtc-sa1100.c | |
| parent | a631694a36a3b52b786b3ae6abe54bd8d1b6eb74 (diff) | |
[PATCH] rtc-sa1100 rtc_wklarm.enabled bugfixes
Some rtc-sa1100 bugfixes:
- The read_alarm() method reports the rtc_wkalrm.enabled field properly.
This patch is already in the handhelds.org tree.
- And the set_alarm() method now handles that flag correctly, rather than
making mismatched {en,dis}able_irq_wake() calls, which trigger runtime
warning messages. (Those calls are best made in suspend/resume methods.)
Note that while this SA1100/PXA RTC is fully capable of waking those ARM
processors from sleep states, that mechanism isn't properly supported on
either processor family, or in this driver. Some boards have board-specific
PM glue providing partial workarounds for the weak generic PM support.
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>
Diffstat (limited to 'drivers/rtc/rtc-sa1100.c')
| -rw-r--r-- | drivers/rtc/rtc-sa1100.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index 9c8ead43a59c..677bae820dc3 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -263,8 +263,12 @@ static int sa1100_rtc_set_time(struct device *dev, struct rtc_time *tm) static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { + u32 rtsr; + memcpy(&alrm->time, &rtc_alarm, sizeof(struct rtc_time)); - alrm->pending = RTSR & RTSR_AL ? 1 : 0; + rtsr = RTSR; + alrm->enabled = (rtsr & RTSR_ALE) ? 1 : 0; + alrm->pending = (rtsr & RTSR_AL) ? 1 : 0; return 0; } @@ -275,12 +279,10 @@ static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) spin_lock_irq(&sa1100_rtc_lock); ret = rtc_update_alarm(&alrm->time); if (ret == 0) { - memcpy(&rtc_alarm, &alrm->time, sizeof(struct rtc_time)); - if (alrm->enabled) - enable_irq_wake(IRQ_RTCAlrm); + RTSR |= RTSR_ALE; else - disable_irq_wake(IRQ_RTCAlrm); + RTSR &= ~RTSR_ALE; } spin_unlock_irq(&sa1100_rtc_lock); |