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Commit f2bf63a3 authored by Vaibhav Agarwal's avatar Vaibhav Agarwal Committed by Akash Choudhari
Browse files

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: default avatarDavid Lin <dtwlin@google.com>
Reviewed-by: default avatarDavid Lin <dtwlin@google.com>
Reviewed-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarAkash Choudhari <akashtc@google.com>
Signed-off-by: default avatarVaibhav Agarwal <vaibhav.agarwal@linaro.org>
parent f35fdb2f

drivers/staging/greybus/audio_codec.c

+5 −1
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
 */

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/pm_runtime.h>

#include <sound/soc.h>

#include <sound/pcm_params.h>

#include <uapi/linux/input.h>
@@ -388,6 +389,8 @@ static int gbcodec_startup(struct snd_pcm_substream *substream, 
	codec->stream[substream->stream].state = state;

	codec->stream[substream->stream].dai_name = dai->name;

	mutex_unlock(&codec->lock);

	/* to prevent suspend in case of active audio */

	pm_stay_awake(dai->dev);



	return ret;

}
@@ -470,6 +473,7 @@ static void gbcodec_shutdown(struct snd_pcm_substream *substream, 
	codec->stream[substream->stream].state = state;

	codec->stream[substream->stream].dai_name = NULL;

	mutex_unlock(&codec->lock);

	pm_relax(dai->dev);

	return;

}
@@ -1094,7 +1098,7 @@ static int gbcodec_probe(struct snd_soc_codec *codec) 
	snd_soc_codec_set_drvdata(codec, info);

	gbcodec = info;



	/* Empty function for now */

        device_init_wakeup(codec->dev, 1);

	return 0;

}