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From 7699523eeae2b47440faa96cbed32c5e23db0e75 Mon Sep 17 00:00:00 2001
From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Date: Tue, 8 Oct 2019 11:44:35 -0500
Subject: [PATCH 17/20] ASoC: SOF: enable sync_write in hdac_bus
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>
---
sound/soc/sof/intel/hda.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 06e84679087b..5a5163eef2ef 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -268,6 +268,7 @@ 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;
--
2.24.1
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