path: root/sound/usb/usbaudio.h
diff options
authorRuslan Bilovol <ruslan.bilovol@gmail.com>2018-05-04 04:24:04 +0300
committerTakashi Iwai <tiwai@suse.de>2018-05-13 08:54:35 +0200
commit17156f23e93c0f59e06dd2aaffd06221341caaee (patch)
treef7eac9dcff74c160bc43f1a032b5d15647fbe1d8 /sound/usb/usbaudio.h
parentALSA: pcm: Hide local_irq_disable/enable() and local_irqsave/restore() (diff)
ALSA: usb: add UAC3 BADD profiles support
Recently released USB Audio Class 3.0 specification contains BADD (Basic Audio Device Definition) document which describes pre-defined UAC3 configurations. BADD support is mandatory for UAC3 devices, it should be implemented as a separate USB device configuration. As per BADD document, class-specific descriptors shall not be included in the Device’s Configuration descriptor ("inferred"), but host can guess them from BADD profile number, number of endpoints and their max packed sizes. This patch adds support of all BADD profiles from the spec Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com> Tested-by: Jorge Sanjuan <jorge.sanjuan@codethink.co.uk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbaudio.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 1cb6b3e9483c..7b28cbde22c0 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -49,6 +49,8 @@ struct snd_usb_audio {
int num_suspended_intf;
int sample_rate_read_error;
+ int badd_profile; /* UAC3 BADD profile */
struct list_head pcm_list; /* list of pcm streams */
struct list_head ep_list; /* list of audio-related endpoints */
int pcm_devs;