From: Jan Kiszka <jan.kiszka@siemens.com>
To: qemu-devel <qemu-devel@nongnu.org>,
Anthony Liguori <aliguori@us.ibm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Subject: [Qemu-devel] [PATCH] rtc: remove dead SQW IRQ code
Date: Wed, 14 Aug 2013 13:29:43 +0200 [thread overview]
Message-ID: <520B6A27.4040207@siemens.com> (raw)
This was once introduced by commit 100d9891d6 but was never used in-tree
and then got broken by commit 32e0c8260d. Time to clean up.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
hw/timer/mc146818rtc.c | 9 +--------
1 files changed, 1 insertions(+), 8 deletions(-)
diff --git a/hw/timer/mc146818rtc.c b/hw/timer/mc146818rtc.c
index 3c3baac..b3f1baa 100644
--- a/hw/timer/mc146818rtc.c
+++ b/hw/timer/mc146818rtc.c
@@ -70,7 +70,6 @@ typedef struct RTCState {
uint64_t last_update;
int64_t offset;
qemu_irq irq;
- qemu_irq sqw_irq;
int it_shift;
/* periodic timer */
QEMUTimer *periodic_timer;
@@ -151,8 +150,7 @@ static void periodic_timer_update(RTCState *s, int64_t current_time)
period_code = s->cmos_data[RTC_REG_A] & 0x0f;
if (period_code != 0
- && ((s->cmos_data[RTC_REG_B] & REG_B_PIE)
- || ((s->cmos_data[RTC_REG_B] & REG_B_SQWE) && s->sqw_irq))) {
+ && (s->cmos_data[RTC_REG_B] & REG_B_PIE)) {
if (period_code <= 2)
period_code += 7;
/* period in 32 Khz cycles */
@@ -202,11 +200,6 @@ static void rtc_periodic_timer(void *opaque)
#endif
qemu_irq_raise(s->irq);
}
- if (s->cmos_data[RTC_REG_B] & REG_B_SQWE) {
- /* Not square wave at all but we don't want 2048Hz interrupts!
- Must be seen as a pulse. */
- qemu_irq_raise(s->sqw_irq);
- }
}
/* handle update-ended timer */
--
1.7.3.4
next reply other threads:[~2013-08-14 11:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-14 11:29 Jan Kiszka [this message]
2013-11-04 13:30 ` [Qemu-devel] [PATCH] rtc: remove dead SQW IRQ code Jan Kiszka
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