Applied "ASoC: rockchip: spdif: restore register during runtime_suspend/resume cycle" to the asoc tree

Mark Brown broonie at
Mon Sep 12 12:06:39 PDT 2016

The patch

   ASoC: rockchip: spdif: restore register during runtime_suspend/resume cycle

has been applied to the asoc tree at


All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

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>From 3628c6987fb45d719cd963805bbba9f15017290e Mon Sep 17 00:00:00 2001
From: Sugar Zhang <sugar.zhang at>
Date: Wed, 7 Sep 2016 14:30:21 +0800
Subject: [PATCH] ASoC: rockchip: spdif: restore register during
 runtime_suspend/resume cycle

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 at>
Signed-off-by: Mark Brown <broonie at>
 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 4ca265737eda..fa8101d1e16f 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);
@@ -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,

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