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authorTakashi Iwai <tiwai@suse.de>2017-02-07 08:09:12 +0100
committerTakashi Iwai <tiwai@suse.de>2017-02-10 10:21:44 +0100
commite8de9859e4e834a74da824e13070aa992c32de10 (patch)
treec59e26788ebfa25745382c22161031d87c0abf98 /sound/x86
parent8d48c0163d1ab0f56a18ebe9898a34ebcfdfaa1a (diff)
downloadlinux-stericsson-e8de9859e4e834a74da824e13070aa992c32de10.tar.gz
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>
Diffstat (limited to 'sound/x86')
-rw-r--r--sound/x86/intel_hdmi_audio.c7
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);