diff options
| author | Takashi Iwai <tiwai@suse.de> | 2017-02-07 08:09:12 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-02-10 10:21:44 +0100 |
| commit | e8de9859e4e834a74da824e13070aa992c32de10 (patch) | |
| tree | c59e26788ebfa25745382c22161031d87c0abf98 | |
| parent | 8d48c0163d1ab0f56a18ebe9898a34ebcfdfaa1a (diff) | |
ALSA: x86: Allow no-period-wakeup setup
In the current implementation, the driver may update the BDs even at
PCM pointer callback. This allows us to skip the period interrupt
effectively.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/x86/intel_hdmi_audio.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index d2136498defe..80b1ab9b1c57 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -133,7 +133,8 @@ static const struct channel_map_table map_tables[] = { static const struct snd_pcm_hardware had_pcm_hardware = { .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID), + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_NO_PERIOD_WAKEUP), .formats = SNDRV_PCM_FMTBIT_S24, .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | @@ -840,7 +841,9 @@ static void had_prog_bd(struct snd_pcm_substream *substream, int ofs = intelhaddata->pcmbuf_filled * intelhaddata->period_bytes; u32 addr = substream->runtime->dma_addr + ofs; - addr |= AUD_BUF_VALID | AUD_BUF_INTR_EN; + addr |= AUD_BUF_VALID; + if (!substream->runtime->no_period_wakeup) + addr |= AUD_BUF_INTR_EN; had_write_register(intelhaddata, AUD_BUF_ADDR(idx), addr); had_write_register(intelhaddata, AUD_BUF_LEN(idx), intelhaddata->period_bytes); |