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[SRU,OEM-OSP1,6/7] ASoC: SOF: enable sync_write in hdac_bus

Message ID 20191209084524.5499-7-hui.wang@canonical.com
State New
Headers show
Series alsa/sof: change to use hda hdmi codec driver to make hdmi audio on the docking station work | expand

Commit Message

Hui Wang Dec. 9, 2019, 8:45 a.m. UTC 
From: Kai Vehmanen <kai.vehmanen@linux.intel.com>

BugLink: https://bugs.launchpad.net/bugs/1855666

Align SOF HDA implementation with snd-hda-intel driver and enable
sync_write flag for all supported Intel platforms in SOF. When set,
a sync is issued after each verb write.

Sync after write has helped to overcome intermittent delays in
system resume flow on Intel Coffee Lake systems, and most recently
probe errors related to the HDMI codec on Ice Lake systems.

Matches the snd-hda-intel driver change done in commit 2756d9143aa5
("ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips").

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191008164443.1358-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit f3416e7144f5d4ba0fc5dcef6ebfff891266c46a)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
---
 sound/soc/sof/intel/hda.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 58662fd059e0..0c0477f82f68 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -235,6 +235,7 @@  static int hda_init(struct snd_sof_dev *sdev)
 
 	bus->use_posbuf = 1;
 	bus->bdl_pos_adj = 0;
+	bus->sync_write = 1;
 
 	mutex_init(&hbus->prepare_mutex);
 	hbus->pci = pci;