From eb3a1ce6f5ed2c047bcae4aad76b7ee711715c7d Mon Sep 17 00:00:00 2001 From: Pavel Hofman Date: Fri, 21 Jan 2022 16:53:02 +0100 Subject: [PATCH] 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: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-5-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/function/u_audio.c | 28 +++++++++++++++++++++++++++ drivers/usb/gadget/function/u_audio.h | 2 ++ 2 files changed, 30 insertions(+) diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c index dce894dcae07..283a449a9538 100644 --- a/drivers/usb/gadget/function/u_audio.c +++ b/drivers/usb/gadget/function/u_audio.c @@ -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; diff --git a/drivers/usb/gadget/function/u_audio.h b/drivers/usb/gadget/function/u_audio.h index 84579fe81b92..5e6ed0f31cc3 100644 --- a/drivers/usb/gadget/function/u_audio.h +++ b/drivers/usb/gadget/function/u_audio.h @@ -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);