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greybus: audio: acquire wakelock during active playback
use pm_stay_awake & pm_relax to avoid suspend sequence during active playback testing Done: Music Playback ongoing $ cat /sys/devices/soc.0/qcom,ara-codec.82/power/wakeup_active 1 Music Playback stopped $ cat /sys/devices/soc.0/qcom,ara-codec.82/power/wakeup_active 0 Tested-by: David Lin <dtwlin@google.com> Reviewed-by: David Lin <dtwlin@google.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Akash Choudhari <akashtc@google.com> Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
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1 changed files with 5 additions and 1 deletions
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@ -7,6 +7,7 @@
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <sound/soc.h>
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#include <sound/pcm_params.h>
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#include <uapi/linux/input.h>
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@ -388,6 +389,8 @@ static int gbcodec_startup(struct snd_pcm_substream *substream,
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codec->stream[substream->stream].state = state;
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codec->stream[substream->stream].dai_name = dai->name;
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mutex_unlock(&codec->lock);
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/* to prevent suspend in case of active audio */
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pm_stay_awake(dai->dev);
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return ret;
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}
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@ -470,6 +473,7 @@ static void gbcodec_shutdown(struct snd_pcm_substream *substream,
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codec->stream[substream->stream].state = state;
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codec->stream[substream->stream].dai_name = NULL;
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mutex_unlock(&codec->lock);
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pm_relax(dai->dev);
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return;
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}
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@ -1094,7 +1098,7 @@ static int gbcodec_probe(struct snd_soc_codec *codec)
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snd_soc_codec_set_drvdata(codec, info);
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gbcodec = info;
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/* Empty function for now */
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device_init_wakeup(codec->dev, 1);
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return 0;
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}
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