diff options
| author | Pavel Hofman <pavel.hofman@ivitera.com> | 2022-01-21 18:53:02 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-26 16:06:08 +0300 |
| commit | eb3a1ce6f5ed2c047bcae4aad76b7ee711715c7d (patch) | |
| tree | 3954e8a1afb2df550ab715e0fc3a8bcfea35c380 /drivers/usb/gadget | |
| parent | 8722a949e62ad77b3e4acc11fc44774ebbc32356 (diff) | |
| download | linux-eb3a1ce6f5ed2c047bcae4aad76b7ee711715c7d.tar.xz | |
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 <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/20220121155308.48794-5-pavel.hofman@ivitera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/function/u_audio.c | 28 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/u_audio.h | 2 |
2 files changed, 30 insertions, 0 deletions
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); |