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ALSA: AACI: no need to call snd_pcm_period_elapsed() for each period

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There is no need to call snd_pcm_period_elapsed() each time a period
elapses - we can call it after we're done once loading/unloading the
FIFO with data.  ALSA works out how many periods have elapsed by
reading the current pointers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2011-01-13 08:47:35 +00:00
parent c0dea82c3c
commit ea51d0b164
1 changed files with 10 additions and 8 deletions
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18
sound/arm/aaci.c
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@ -206,6 +206,7 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
if (mask & ISR_RXINTR) {
struct aaci_runtime *aacirun = &aaci->capture;
bool period_elapsed = false;
void *ptr;
if (!aacirun->substream || !aacirun->start) {
@ -223,10 +224,7 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
if (aacirun->bytes <= 0) {
aacirun->bytes += aacirun->period;
aacirun->ptr = ptr;
spin_unlock(&aacirun->lock);
snd_pcm_period_elapsed(aacirun->substream);
spin_lock(&aacirun->lock);
period_elapsed = true;
}
if (!(aacirun->cr & CR_EN))
break;
@ -256,6 +254,9 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
aacirun->ptr = ptr;
spin_unlock(&aacirun->lock);
if (period_elapsed)
snd_pcm_period_elapsed(aacirun->substream);
}
if (mask & ISR_URINTR) {
@ -265,6 +266,7 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
if (mask & ISR_TXINTR) {
struct aaci_runtime *aacirun = &aaci->playback;
bool period_elapsed = false;
void *ptr;
if (!aacirun->substream || !aacirun->start) {
@ -282,10 +284,7 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
if (aacirun->bytes <= 0) {
aacirun->bytes += aacirun->period;
aacirun->ptr = ptr;
spin_unlock(&aacirun->lock);
snd_pcm_period_elapsed(aacirun->substream);
spin_lock(&aacirun->lock);
period_elapsed = true;
}
if (!(aacirun->cr & CR_EN))
break;
@ -315,6 +314,9 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
aacirun->ptr = ptr;
spin_unlock(&aacirun->lock);
if (period_elapsed)
snd_pcm_period_elapsed(aacirun->substream);
}
}