Commit eb3a1ce6 authored by Pavel Hofman's avatar Pavel Hofman Committed by Greg Kroah-Hartman
Browse files

usb: gadget: u_audio: Add capture/playback srate getter 



UAC1/UAC2 functions will need to query u_audio about the currently set
srate. Add the getter functions.

Signed-off-by: default avatarPavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20220121155308.48794-5-pavel.hofman@ivitera.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8722a949

drivers/usb/gadget/function/u_audio.c

+28 −0
Original line number Diff line number Diff line
@@ -515,6 +515,20 @@ int u_audio_set_capture_srate(struct g_audio *audio_dev, int srate) 
}

EXPORT_SYMBOL_GPL(u_audio_set_capture_srate);



int u_audio_get_capture_srate(struct g_audio *audio_dev, u32 *val)

{

	struct snd_uac_chip *uac = audio_dev->uac;

	struct uac_rtd_params *prm;

	unsigned long flags;



	prm = &uac->c_prm;

	spin_lock_irqsave(&prm->lock, flags);

	*val = prm->srate;

	spin_unlock_irqrestore(&prm->lock, flags);

	return 0;

}

EXPORT_SYMBOL_GPL(u_audio_get_capture_srate);



int u_audio_set_playback_srate(struct g_audio *audio_dev, int srate)

{

	struct uac_params *params = &audio_dev->params;
@@ -540,6 +554,20 @@ int u_audio_set_playback_srate(struct g_audio *audio_dev, int srate) 
}

EXPORT_SYMBOL_GPL(u_audio_set_playback_srate);



int u_audio_get_playback_srate(struct g_audio *audio_dev, u32 *val)

{

	struct snd_uac_chip *uac = audio_dev->uac;

	struct uac_rtd_params *prm;

	unsigned long flags;



	prm = &uac->p_prm;

	spin_lock_irqsave(&prm->lock, flags);

	*val = prm->srate;

	spin_unlock_irqrestore(&prm->lock, flags);

	return 0;

}

EXPORT_SYMBOL_GPL(u_audio_get_playback_srate);



int u_audio_start_capture(struct g_audio *audio_dev)

{

	struct snd_uac_chip *uac = audio_dev->uac;

drivers/usb/gadget/function/u_audio.h

+2 −0
Original line number Diff line number Diff line
@@ -120,7 +120,9 @@ void u_audio_stop_capture(struct g_audio *g_audio); 
int u_audio_start_playback(struct g_audio *g_audio);

void u_audio_stop_playback(struct g_audio *g_audio);



int u_audio_get_capture_srate(struct g_audio *audio_dev, u32 *val);

int u_audio_set_capture_srate(struct g_audio *audio_dev, int srate);

int u_audio_get_playback_srate(struct g_audio *audio_dev, u32 *val);

int u_audio_set_playback_srate(struct g_audio *audio_dev, int srate);



int u_audio_get_volume(struct g_audio *g_audio, int playback, s16 *val);