@@ -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,
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@rock-chips.com> --- 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(-)