The patch titled
RTC: add periodic irq support to rtc-cmos
has been added to the -mm tree. Its filename is
rtc-add-periodic-irq-support-to-rtc-cmos.patch
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See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: RTC: add periodic irq support to rtc-cmos
From: Alessandro Zummo <alessandro.zummo@xxxxxxxxxxxx>
Adds support for periodic irq enabling in rtc-cmos. This could be used by
the ALSA driver and is already being tested with the zaptel ztdummy module.
Signed-off-by: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-cmos.c | 33 +++++++++++++++++++++++++++++++--
1 files changed, 31 insertions(+), 2 deletions(-)
diff -puN drivers/rtc/rtc-cmos.c~rtc-add-periodic-irq-support-to-rtc-cmos drivers/rtc/rtc-cmos.c
--- a/drivers/rtc/rtc-cmos.c~rtc-add-periodic-irq-support-to-rtc-cmos
+++ a/drivers/rtc/rtc-cmos.c
@@ -235,7 +235,7 @@ static int cmos_set_alarm(struct device
return 0;
}
-static int cmos_set_freq(struct device *dev, int freq)
+static int cmos_irq_set_freq(struct device *dev, int freq)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
int f;
@@ -259,6 +259,34 @@ static int cmos_set_freq(struct device *
return 0;
}
+static int cmos_irq_set_state(struct device *dev, int enabled)
+{
+ struct cmos_rtc *cmos = dev_get_drvdata(dev);
+ unsigned char rtc_control, rtc_intr;
+ unsigned long flags;
+
+ if (!is_valid_irq(cmos->irq))
+ return -ENXIO;
+
+ spin_lock_irqsave(&rtc_lock, flags);
+ rtc_control = CMOS_READ(RTC_CONTROL);
+
+ if (enabled)
+ rtc_control |= RTC_PIE;
+ else
+ rtc_control &= ~RTC_PIE;
+
+ CMOS_WRITE(rtc_control, RTC_CONTROL);
+
+ rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
+ rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
+ if (is_intr(rtc_intr))
+ rtc_update_irq(cmos->rtc, 1, rtc_intr);
+
+ spin_unlock_irqrestore(&rtc_lock, flags);
+ return 0;
+}
+
#if defined(CONFIG_RTC_INTF_DEV) || defined(CONFIG_RTC_INTF_DEV_MODULE)
static int
@@ -360,7 +388,8 @@ static const struct rtc_class_ops cmos_r
.read_alarm = cmos_read_alarm,
.set_alarm = cmos_set_alarm,
.proc = cmos_procfs,
- .irq_set_freq = cmos_set_freq,
+ .irq_set_freq = cmos_irq_set_freq,
+ .irq_set_state = cmos_irq_set_state,
};
/*----------------------------------------------------------------*/
_
Patches currently in -mm which might be from alessandro.zummo@xxxxxxxxxxxx are
origin.patch
rtc-add-periodic-irq-support-to-rtc-cmos.patch
-
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