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-rw-r--r--sound/usb/implicit.c5
-rw-r--r--sound/usb/usbaudio.h6
2 files changed, 10 insertions, 1 deletions
diff --git a/sound/usb/implicit.c b/sound/usb/implicit.c
index 2d444ec74202..1fd087128538 100644
--- a/sound/usb/implicit.c
+++ b/sound/usb/implicit.c
@@ -350,7 +350,8 @@ static int audioformat_implicit_fb_quirk(struct snd_usb_audio *chip,
}
/* Try the generic implicit fb if available */
- if (chip->generic_implicit_fb)
+ if (chip->generic_implicit_fb ||
+ (chip->quirk_flags & QUIRK_FLAG_GENERIC_IMPLICIT_FB))
return add_generic_implicit_fb(chip, fmt, alts);
/* No quirk */
@@ -387,6 +388,8 @@ int snd_usb_parse_implicit_fb_quirk(struct snd_usb_audio *chip,
struct audioformat *fmt,
struct usb_host_interface *alts)
{
+ if (chip->quirk_flags & QUIRK_FLAG_SKIP_IMPLICIT_FB)
+ return 0;
if (fmt->endpoint & USB_DIR_IN)
return audioformat_capture_quirk(chip, fmt, alts);
else
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index b8359a0aa008..044cd7ab27cb 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -164,6 +164,10 @@ extern bool snd_usb_skip_validation;
* Support generic DSD raw U32_BE format
* QUIRK_FLAG_SET_IFACE_FIRST:
* Set up the interface at first like UAC1
+ * QUIRK_FLAG_GENERIC_IMPLICIT_FB
+ * Apply the generic implicit feedback sync mode (same as implicit_fb=1 option)
+ * QUIRK_FLAG_SKIP_IMPLICIT_FB
+ * Don't apply implicit feedback sync mode
*/
#define QUIRK_FLAG_GET_SAMPLE_RATE (1U << 0)
@@ -183,5 +187,7 @@ extern bool snd_usb_skip_validation;
#define QUIRK_FLAG_IGNORE_CTL_ERROR (1U << 14)
#define QUIRK_FLAG_DSD_RAW (1U << 15)
#define QUIRK_FLAG_SET_IFACE_FIRST (1U << 16)
+#define QUIRK_FLAG_GENERIC_IMPLICIT_FB (1U << 17)
+#define QUIRK_FLAG_SKIP_IMPLICIT_FB (1U << 18)
#endif /* __USBAUDIO_H */