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| author | Eliot Blennerhassett <eblennerhassett@audioscience.com> | 2011-04-05 20:55:43 +1200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-04-05 11:47:08 +0200 |
| commit | 0b7ce9e2bd2d9dbc8f4797b0cd5e0d138cb529e1 (patch) | |
| tree | cefa6f59f25f536b0f1f84bd161297ed02729b12 /sound/pci/asihpi/asihpi.c | |
| parent | a6477134db119a22aa30911ff18e440b8db9df65 (diff) | |
| download | linux-3.10-0b7ce9e2bd2d9dbc8f4797b0cd5e0d138cb529e1.tar.gz linux-3.10-0b7ce9e2bd2d9dbc8f4797b0cd5e0d138cb529e1.tar.bz2 linux-3.10-0b7ce9e2bd2d9dbc8f4797b0cd5e0d138cb529e1.zip | |
ALSA: asihpi: Handle playback drained status better
Use the card drained status reporting for playback,
but allow it to persist for a few timer cycles before
signalling XRUN, to allow card to recover by itself.
Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/asihpi/asihpi.c')
| -rw-r--r-- | sound/pci/asihpi/asihpi.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c index 434342f874f..a5226e3af3d 100644 --- a/sound/pci/asihpi/asihpi.c +++ b/sound/pci/asihpi/asihpi.c @@ -165,6 +165,7 @@ struct snd_card_asihpi_pcm { unsigned int pcm_buf_host_rw_ofs; /* Host R/W pos */ unsigned int pcm_buf_dma_ofs; /* DMA R/W offset in buffer */ unsigned int pcm_buf_elapsed_dma_ofs; /* DMA R/W offset in buffer */ + unsigned int drained_count; struct snd_pcm_substream *substream; u32 h_stream; struct hpi_format format; @@ -592,6 +593,7 @@ static int snd_card_asihpi_trigger(struct snd_pcm_substream *substream, if (substream->stream != s->stream) continue; + ds->drained_count = 0; if ((s->stream == SNDRV_PCM_STREAM_PLAYBACK) && (card->support_mmap)) { /* How do I know how much valid data is present @@ -771,12 +773,18 @@ static void snd_card_asihpi_timer_function(unsigned long data) (on_card_bytes < ds->pcm_buf_host_rw_ofs)) { hpi_handle_error(hpi_stream_start(ds->h_stream)); snd_printdd("P%d start\n", s->number); + ds->drained_count = 0; } } else if (state == HPI_STATE_DRAINED) { snd_printd(KERN_WARNING "P%d drained\n", s->number); - /*snd_pcm_stop(s, SNDRV_PCM_STATE_XRUN); - continue; */ + ds->drained_count++; + if (ds->drained_count > 2) { + snd_pcm_stop(s, SNDRV_PCM_STATE_XRUN); + continue; + } + } else { + ds->drained_count = 0; } } else pcm_buf_dma_ofs = bytes_avail + ds->pcm_buf_host_rw_ofs; |