From: Eliot Blennerhassett Date: Tue, 5 Apr 2011 08:55:43 +0000 (+1200) Subject: ALSA: asihpi: Handle playback drained status better X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0b7ce9e2bd2d9dbc8f4797b0cd5e0d138cb529e1;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c index 434342f874ff..a5226e3af3d7 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;