diff --git a/sound/usb/card.c b/sound/usb/card.c index a1ed798a1c6b..2bfe4e80a6b9 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -809,6 +809,7 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) if (!chip->num_suspended_intf++) { list_for_each_entry(as, &chip->pcm_list, list) { snd_pcm_suspend_all(as->pcm); + snd_usb_pcm_suspend(as); as->substream[0].need_setup_ep = as->substream[1].need_setup_ep = true; } @@ -824,6 +825,7 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume) { struct snd_usb_audio *chip = usb_get_intfdata(intf); + struct snd_usb_stream *as; struct usb_mixer_interface *mixer; struct list_head *p; int err = 0; @@ -834,6 +836,13 @@ static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume) return 0; atomic_inc(&chip->active); /* avoid autopm */ + + list_for_each_entry(as, &chip->pcm_list, list) { + err = snd_usb_pcm_resume(as); + if (err < 0) + goto err_out; + } + /* * ALSA leaves material resumption to user space * we just notify and restart the mixers diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 4b930fa47277..99ec9d5caa58 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -711,6 +711,54 @@ static int configure_endpoint(struct snd_usb_substream *subs) return ret; } +static int snd_usb_pcm_change_state(struct snd_usb_substream *subs, int state) +{ + int ret; + + if (!subs->str_pd) + return 0; + + ret = snd_usb_power_domain_set(subs->stream->chip, subs->str_pd, state); + if (ret < 0) { + dev_err(&subs->dev->dev, + "Cannot change Power Domain ID: %d to state: %d. Err: %d\n", + subs->str_pd->pd_id, state, ret); + return ret; + } + + return 0; +} + +int snd_usb_pcm_suspend(struct snd_usb_stream *as) +{ + int ret; + + ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D2); + if (ret < 0) + return ret; + + ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D2); + if (ret < 0) + return ret; + + return 0; +} + +int snd_usb_pcm_resume(struct snd_usb_stream *as) +{ + int ret; + + ret = snd_usb_pcm_change_state(&as->substream[0], UAC3_PD_STATE_D0); + if (ret < 0) + return ret; + + ret = snd_usb_pcm_change_state(&as->substream[1], UAC3_PD_STATE_D0); + if (ret < 0) + return ret; + + return 0; +} + /* * hw_params callback * diff --git a/sound/usb/pcm.h b/sound/usb/pcm.h index f77ec58bf1a1..9833627c1eca 100644 --- a/sound/usb/pcm.h +++ b/sound/usb/pcm.h @@ -6,6 +6,8 @@ snd_pcm_uframes_t snd_usb_pcm_delay(struct snd_usb_substream *subs, unsigned int rate); void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream); +int snd_usb_pcm_suspend(struct snd_usb_stream *as); +int snd_usb_pcm_resume(struct snd_usb_stream *as); int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts,