From 62385cf158a7e65b5f347590521d02ee75dc8518 Mon Sep 17 00:00:00 2001 From: Pavel Hofman Date: Fri, 21 Jan 2022 16:53:06 +0100 Subject: usb: gadget: u_audio: Add suspend call Add exported method u_audio_suspend which sets stream status to inactive and sends notifications. The method does not free any resources. Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-9-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/u_audio.c | 9 +++++++++ drivers/usb/gadget/function/u_audio.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c index fab1bc439002..2bb569895a90 100644 --- a/drivers/usb/gadget/function/u_audio.c +++ b/drivers/usb/gadget/function/u_audio.c @@ -757,6 +757,15 @@ void u_audio_stop_playback(struct g_audio *audio_dev) } EXPORT_SYMBOL_GPL(u_audio_stop_playback); +void u_audio_suspend(struct g_audio *audio_dev) +{ + struct snd_uac_chip *uac = audio_dev->uac; + + set_active(&uac->p_prm, false); + set_active(&uac->c_prm, false); +} +EXPORT_SYMBOL_GPL(u_audio_suspend); + int u_audio_get_volume(struct g_audio *audio_dev, int playback, s16 *val) { struct snd_uac_chip *uac = audio_dev->uac; diff --git a/drivers/usb/gadget/function/u_audio.h b/drivers/usb/gadget/function/u_audio.h index 5e6ed0f31cc3..9512b8fccfaa 100644 --- a/drivers/usb/gadget/function/u_audio.h +++ b/drivers/usb/gadget/function/u_audio.h @@ -130,4 +130,6 @@ int u_audio_set_volume(struct g_audio *g_audio, int playback, s16 val); int u_audio_get_mute(struct g_audio *g_audio, int playback, int *val); int u_audio_set_mute(struct g_audio *g_audio, int playback, int val); +void u_audio_suspend(struct g_audio *g_audio); + #endif /* __U_AUDIO_H */ -- cgit v1.2.3-70-g09d2