ALSA: hda-intel: support for period wakeup disabling

Allow disabling period wakeup interrupts for HDA PCM streams.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@intel.com>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_intel.c

@@ -1235,7 +1235,8 @@ static int azx_setup_periods(struct azx *chip,
 			pos_adj = 0;
 		} else {
 			ofs = setup_bdle(substream, azx_dev,
-					 &bdl, ofs, pos_adj, 1);
+					 &bdl, ofs, pos_adj,
+					 !substream->runtime->no_period_wakeup);
 			if (ofs < 0)
 				goto error;
 		}
@@ -1247,7 +1248,8 @@ static int azx_setup_periods(struct azx *chip,
 					 period_bytes - pos_adj, 0);
 		else
 			ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
-					 period_bytes, 1);
+					 period_bytes,
+					 !substream->runtime->no_period_wakeup);
 		if (ofs < 0)
 			goto error;
 	}
@@ -1515,7 +1517,8 @@ static struct snd_pcm_hardware azx_pcm_hw = {
 				 /* No full-resume yet implemented */
 				 /* SNDRV_PCM_INFO_RESUME |*/
 				 SNDRV_PCM_INFO_PAUSE |
-				 SNDRV_PCM_INFO_SYNC_START),
+				 SNDRV_PCM_INFO_SYNC_START |
+				 SNDRV_PCM_INFO_NO_PERIOD_WAKEUP),
 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
 	.rates =		SNDRV_PCM_RATE_48000,
 	.rate_min =		48000,