diff options
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 01b9d62eef14..ca1ea3cf9350 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -683,6 +683,31 @@ static inline int snd_pcm_substream_proc_done(struct snd_pcm_substream *substrea static const struct attribute_group *pcm_dev_attr_groups[]; +/* + * PM callbacks: we need to deal only with suspend here, as the resume is + * triggered either from user-space or the driver's resume callback + */ +#ifdef CONFIG_PM_SLEEP +static int do_pcm_suspend(struct device *dev) +{ + struct snd_pcm_str *pstr = container_of(dev, struct snd_pcm_str, dev); + + if (!pstr->pcm->no_device_suspend) + snd_pcm_suspend_all(pstr->pcm); + return 0; +} +#endif + +static const struct dev_pm_ops pcm_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(do_pcm_suspend, NULL) +}; + +/* device type for PCM -- basically only for passing PM callbacks */ +static const struct device_type pcm_dev_type = { + .name = "pcm", + .pm = &pcm_dev_pm_ops, +}; + /** * snd_pcm_new_stream - create a new PCM stream * @pcm: the pcm instance @@ -713,6 +738,7 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) snd_device_initialize(&pstr->dev, pcm->card); pstr->dev.groups = pcm_dev_attr_groups; + pstr->dev.type = &pcm_dev_type; dev_set_name(&pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device, stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c'); |