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

[Srinivas Kandagatla]

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 at codeaurora.org>
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam at codeaurora.org>

LGTM,

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>


> ---
>   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,
>   
>   };
>   
>