diff options
| author | Rong Zhang <i@rong.moe> | 2026-05-27 01:49:23 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-05-27 07:36:37 +0200 |
| commit | 06363f96e3d6b54ff7b5d2ce85cab95bd5e874b0 (patch) | |
| tree | fdc5146dcd1703edc88c199210b7b1ad55768262 /Documentation | |
| parent | b2e9d2cbbb71b00faf3e27fb741a27b9ad455edd (diff) | |
| download | linux-next-history-06363f96e3d6b54ff7b5d2ce85cab95bd5e874b0.tar.gz | |
ALSA: doc: usb-audio: Add doc for QUIRK_FLAG_IFB_SILENCE_ON_EMPTY
QUIRK_FLAG_IFB_SILENCE_ON_EMPTY was introduced into usb-audio before
without appropriate documentation, so add it.
Fixes: a23812004228 ("ALSA: usb-audio: add IFB_SILENCE_ON_EMPTY quirk for Behringer Flow 8")
Signed-off-by: Rong Zhang <i@rong.moe>
Link: https://patch.msgid.link/20260527-uac-quirk-get-cur-vol-v1-1-e9362b712e5e@rong.moe
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/sound/alsa-configuration.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/sound/alsa-configuration.rst b/Documentation/sound/alsa-configuration.rst index f75f087639415..4b30cd63c5a5a 100644 --- a/Documentation/sound/alsa-configuration.rst +++ b/Documentation/sound/alsa-configuration.rst @@ -2383,6 +2383,12 @@ quirk_flags ``V(x) = k * x``; ``dB(x) = 20 * log10(x)``. Overrides bit 24 * bit 28: ``mixer_capture_linear_vol`` Similar to bit 27 but for capture streams. Overrides bit 25 + * bit 29: ``ifb_silence_on_empty`` + In implicit feedback mode, when an entire capture URB returns with + all iso_frame_desc[i].status != 0 (bytes==0), do not silently return + from snd_usb_handle_sync_urb. Instead fall through and enqueue a + packet_info containing only size-0 packets, so the OUT ring keeps + moving (emits silence). Needed by Behringer Flow 8 (1397:050c). This module supports multiple devices, autoprobe and hotplugging. |