when step into runtime_suspend, spdif pd will be disabled and loss state.
so need to restore register when runtime_resume.
Signed-off-by: Sugar Zhang <sugar.zhang@xxxxxxxxxxxxxx>
---
Changes in v3:
- remove unneeded initialization
Changes in v2:
- remove system suspend/resume and restore register
in runtime_suspend/resume per Doug Anderson's suggestion
sound/soc/rockchip/rockchip_spdif.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/sound/soc/rockchip/rockchip_spdif.c b/sound/soc/rockchip/rockchip_spdif.c
index 4ca2657..fa8101d 100644
--- a/sound/soc/rockchip/rockchip_spdif.c
+++ b/sound/soc/rockchip/rockchip_spdif.c
@@ -65,6 +65,7 @@ static int __maybe_unused rk_spdif_runtime_suspend(struct device *dev)
{
struct rk_spdif_dev *spdif = dev_get_drvdata(dev);
+ regcache_cache_only(spdif->regmap, true);
clk_disable_unprepare(spdif->mclk);
clk_disable_unprepare(spdif->hclk);
@@ -88,7 +89,16 @@ static int __maybe_unused rk_spdif_runtime_resume(struct device *dev)
return ret;
}
- return 0;
+ regcache_cache_only(spdif->regmap, false);
+ regcache_mark_dirty(spdif->regmap);
+
+ ret = regcache_sync(spdif->regmap);
+ if (ret) {
+ clk_disable_unprepare(spdif->mclk);
+ clk_disable_unprepare(spdif->hclk);
+ }
+
+ return ret;
}
static int rk_spdif_hw_params(struct snd_pcm_substream *substream,
--
1.9.1
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