[alsa-devel] [PATCH v2 2/2] ASoC: SOF: Intel: only support INFO_BATCH for legacy platforms

[Pierre-Louis Bossart]

The current position update is not precise enough for PulseAudio to
work reliably with the timer-based scheduling on Baytrail,
Cherrytrail, Broadwell.

Disable the NO_PERIOD_WAKEUP capability and use BATCH to signal that
the position is only reliable and updated during period_elapsed
events.

This will be reverted when the firmware provides a more accurate
position for those platforms.

Reviewed-by: Jaska Uimonen <jaska.uimonen at intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
---
 sound/soc/sof/intel/bdw.c | 2 +-
 sound/soc/sof/intel/byt.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sof/intel/bdw.c b/sound/soc/sof/intel/bdw.c
index 7b4cd1f456bf..141dad554764 100644
--- a/sound/soc/sof/intel/bdw.c
+++ b/sound/soc/sof/intel/bdw.c
@@ -598,7 +598,7 @@ const struct snd_sof_dsp_ops sof_bdw_ops = {
 			SNDRV_PCM_INFO_MMAP_VALID |
 			SNDRV_PCM_INFO_INTERLEAVED |
 			SNDRV_PCM_INFO_PAUSE |
-			SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
+			SNDRV_PCM_INFO_BATCH,
 };
 EXPORT_SYMBOL(sof_bdw_ops);
 
diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c
index 62edb959f1fc..2abf80b3eb52 100644
--- a/sound/soc/sof/intel/byt.c
+++ b/sound/soc/sof/intel/byt.c
@@ -538,7 +538,7 @@ const struct snd_sof_dsp_ops sof_tng_ops = {
 			SNDRV_PCM_INFO_MMAP_VALID |
 			SNDRV_PCM_INFO_INTERLEAVED |
 			SNDRV_PCM_INFO_PAUSE |
-			SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
+			SNDRV_PCM_INFO_BATCH,
 };
 EXPORT_SYMBOL(sof_tng_ops);
 
@@ -706,7 +706,7 @@ const struct snd_sof_dsp_ops sof_byt_ops = {
 			SNDRV_PCM_INFO_MMAP_VALID |
 			SNDRV_PCM_INFO_INTERLEAVED |
 			SNDRV_PCM_INFO_PAUSE |
-			SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
+			SNDRV_PCM_INFO_BATCH,
 };
 EXPORT_SYMBOL(sof_byt_ops);
 
@@ -773,7 +773,7 @@ const struct snd_sof_dsp_ops sof_cht_ops = {
 			SNDRV_PCM_INFO_MMAP_VALID |
 			SNDRV_PCM_INFO_INTERLEAVED |
 			SNDRV_PCM_INFO_PAUSE |
-			SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
+			SNDRV_PCM_INFO_BATCH,
 };
 EXPORT_SYMBOL(sof_cht_ops);
 
-- 
2.20.1