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

Steev Klimaszewski
2020-11-30T16:27:36Z

On 11/27/20 10:59 PM, 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@codeaurora.org>
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.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,
>
> };
>

Tested this series on a Lenovo Yoga C630

Tested-by: Steev Klimaszewski <steev@kali.org>