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ALSA: firewire-lib: replace ack callback to flush isoc contexts in AMDTP domain

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An isoc context for AMDTP stream is flushed to queue packet
by a call of pcm.ack. This commit extends this for AMDTP
domain.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20191018061911.24909-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2019-10-18 15:19:08 +09:00
committed by Takashi Iwai
parent f890f9a04b
commit e6dcc92fce
10 changed files with 33 additions and 26 deletions
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24
sound/firewire/amdtp-stream.c
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@@ -1139,23 +1139,29 @@ unsigned long amdtp_domain_stream_pcm_pointer(struct amdtp_domain *d,
EXPORT_SYMBOL_GPL(amdtp_domain_stream_pcm_pointer);
/**
* amdtp_stream_pcm_ack - acknowledge queued PCM frames
* amdtp_domain_stream_pcm_ack - acknowledge queued PCM frames
* @d: the AMDTP domain.
* @s: the AMDTP stream that transfers the PCM frames
*
* Returns zero always.
*/
int amdtp_stream_pcm_ack(struct amdtp_stream *s)
int amdtp_domain_stream_pcm_ack(struct amdtp_domain *d, struct amdtp_stream *s)
{
/*
* Process isochronous packets for recent isochronous cycle to handle
* queued PCM frames.
*/
if (amdtp_stream_running(s))
fw_iso_context_flush_completions(s->context);
struct amdtp_stream *irq_target = d->irq_target;
// Process isochronous packets for recent isochronous cycle to handle
// queued PCM frames.
if (irq_target && amdtp_stream_running(irq_target)) {
// Queued packet should be processed without any kernel
// preemption to keep latency against bus cycle.
preempt_disable();
fw_iso_context_flush_completions(irq_target->context);
preempt_enable();
}
return 0;
}
EXPORT_SYMBOL(amdtp_stream_pcm_ack);
EXPORT_SYMBOL_GPL(amdtp_domain_stream_pcm_ack);
/**
* amdtp_stream_update - update the stream after a bus reset