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UPSTREAM: usb: gadget: u_audio: Add suspend call

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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 <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20220121155308.48794-9-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 235196743
(cherry picked from commit 62385cf158)
Change-Id: I064ae3c92aaeec52a3f484665b89ee31132e5053
Signed-off-by: Luiz Matheus <luizmmat@motorola.com>
This commit is contained in:
Pavel Hofman 2022-01-21 16:53:06 +01:00 • committed by Treehugger Robot
commit 31e6d620c1
2 changed files with 11 additions and 0 deletions
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9
drivers/usb/gadget/function/u_audio.c
View file

@ -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;

2
drivers/usb/gadget/function/u_audio.h
View file

@ -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 */