Re: [PATCH v4 2/2] ASoC: qcom: Add support for playback recover after resume

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On 28/11/2020 04:59, Srinivasa Rao Mandadapu wrote:
To support playback continuation after hard suspend(bypass powerd)
and resume add component driver ops and do regcache sync.

Signed-off-by: V Sujith Kumar Reddy <vsujithk@xxxxxxxxxxxxxx>
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@xxxxxxxxxxxxxx>

LGTM,

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>


---
  sound/soc/qcom/lpass-platform.c | 35 +++++++++++++++++++++++++++++++++++
  1 file changed, 35 insertions(+)

diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c
index 0e71899..12764a8 100644
--- a/sound/soc/qcom/lpass-platform.c
+++ b/sound/soc/qcom/lpass-platform.c
@@ -827,6 +827,39 @@ static void lpass_platform_pcm_free(struct snd_soc_component *component,
  	}
  }
+static int lpass_platform_pcmops_suspend(struct snd_soc_component *component)
+{
+	struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
+	struct regmap *map;
+	unsigned int dai_id = component->id;
+
+	if (dai_id == LPASS_DP_RX)
+		map = drvdata->hdmiif_map;
+	else
+		map = drvdata->lpaif_map;
+
+	regcache_cache_only(map, true);
+	regcache_mark_dirty(map);
+
+	return 0;
+}
+
+static int lpass_platform_pcmops_resume(struct snd_soc_component *component)
+{
+	struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
+	struct regmap *map;
+	unsigned int dai_id = component->id;
+
+	if (dai_id == LPASS_DP_RX)
+		map = drvdata->hdmiif_map;
+	else
+		map = drvdata->lpaif_map;
+
+	regcache_cache_only(map, false);
+	return regcache_sync(map);
+}
+
+
  static const struct snd_soc_component_driver lpass_component_driver = {
  	.name		= DRV_NAME,
  	.open		= lpass_platform_pcmops_open,
@@ -839,6 +872,8 @@ static const struct snd_soc_component_driver lpass_component_driver = {
  	.mmap		= lpass_platform_pcmops_mmap,
  	.pcm_construct	= lpass_platform_pcm_new,
  	.pcm_destruct	= lpass_platform_pcm_free,
+	.suspend		= lpass_platform_pcmops_suspend,
+	.resume			= lpass_platform_pcmops_resume,
};



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