ALSA: usb-audio: use a format bitmask per alternate setting
In preparation for USB audio 2.0 support, change the audioformat
structure so that it uses a bitmask to specify possible formats.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/card.h b/sound/usb/card.h
index 856d71b..ed92420 100644
--- a/sound/usb/card.h
+++ b/sound/usb/card.h
@@ -9,7 +9,7 @@
struct audioformat {
struct list_head list;
- snd_pcm_format_t format; /* format type */
+ u64 formats; /* ALSA format bits */
unsigned int channels; /* # channels */
unsigned int fmt_type; /* USB audio format type (1-3) */
unsigned int frame_size; /* samples per frame for non-audio */