diff options
| author | Vaibhav Agarwal <vaibhav.agarwal@linaro.org> | 2016-04-22 11:13:19 -0700 |
|---|---|---|
| committer | Akash Choudhari <akashtc@google.com> | 2016-04-22 11:29:21 -0700 |
| commit | f2bf63a365425fa7df56c4e1dbe5a6bb29680324 (patch) | |
| tree | ef992dc18a46dada558225954841e211c78825de /drivers/staging/greybus/audio_codec.c | |
| parent | f35fdb2fbdc9435b723775b6aa561590413131c6 (diff) | |
| download | op-kernel-dev-f2bf63a365425fa7df56c4e1dbe5a6bb29680324.zip op-kernel-dev-f2bf63a365425fa7df56c4e1dbe5a6bb29680324.tar.gz | |
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>
Diffstat (limited to 'drivers/staging/greybus/audio_codec.c')
| -rw-r--r-- | drivers/staging/greybus/audio_codec.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c index ba3bd36..9ed35c4 100644 --- a/drivers/staging/greybus/audio_codec.c +++ b/drivers/staging/greybus/audio_codec.c @@ -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; } |
