The registers may be lost after suspend due to powerdown.
regcache_sync solves this issue.
Signed-off-by: Zhu Ning <zhuning@xxxxxxxxxxxxxxxx>
---
sound/soc/codecs/es8316.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/sound/soc/codecs/es8316.c b/sound/soc/codecs/es8316.c
index de7185f73e1e..8643014472ae 100644
--- a/sound/soc/codecs/es8316.c
+++ b/sound/soc/codecs/es8316.c
@@ -767,9 +767,31 @@ static void es8316_remove(struct snd_soc_component *component)
clk_disable_unprepare(es8316->mclk);
}
+static int es8316_resume(struct snd_soc_component *component)
+{
+ struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
+
+ regcache_cache_only(es8316->regmap, false);
+ regcache_sync(es8316->regmap);
+
+ return 0;
+}
+
+static int es8316_suspend(struct snd_soc_component *component)
+{
+ struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
+
+ regcache_cache_only(es8316->regmap, true);
+ regcache_mark_dirty(es8316->regmap);
+
+ return 0;
+}
+
static const struct snd_soc_component_driver soc_component_dev_es8316 = {
.probe = es8316_probe,
.remove = es8316_remove,
+ .resume = es8316_resume,
+ .suspend = es8316_suspend,
.set_jack = es8316_set_jack,
.controls = es8316_snd_controls,
.num_controls = ARRAY_SIZE(es8316_snd_controls),
--
2.36.1
