This is a note to let you know that I've just added the patch titled
ALSA: usb-audio: Add quirk for VF0770
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-usb-audio-add-quirk-for-vf0770.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 48827e1d6af58f219e89c7ec08dccbca28c7694e Mon Sep 17 00:00:00 2001
From: Jonas Hahnfeld <hahnjo@xxxxxxxxx>
Date: Tue, 12 Oct 2021 22:09:07 +0200
Subject: ALSA: usb-audio: Add quirk for VF0770
From: Jonas Hahnfeld <hahnjo@xxxxxxxxx>
commit 48827e1d6af58f219e89c7ec08dccbca28c7694e upstream.
The device advertises 8 formats, but only a rate of 48kHz is honored
by the hardware and 24 bits give chopped audio, so only report the
one working combination. This fixes out-of-the-box audio experience
with PipeWire which otherwise attempts to choose S24_3LE (while
PulseAudio defaulted to S16_LE).
Signed-off-by: Jonas Hahnfeld <hahnjo@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211012200906.3492-1-hahnjo@xxxxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/usb/quirks-table.h | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -126,6 +126,48 @@
},
/*
+ * Creative Technology, Ltd Live! Cam Sync HD [VF0770]
+ * The device advertises 8 formats, but only a rate of 48kHz is honored by the
+ * hardware and 24 bits give chopped audio, so only report the one working
+ * combination.
+ */
+{
+ USB_DEVICE(0x041e, 0x4095),
+ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+ .ifnum = QUIRK_ANY_INTERFACE,
+ .type = QUIRK_COMPOSITE,
+ .data = &(const struct snd_usb_audio_quirk[]) {
+ {
+ .ifnum = 2,
+ .type = QUIRK_AUDIO_STANDARD_MIXER,
+ },
+ {
+ .ifnum = 3,
+ .type = QUIRK_AUDIO_FIXED_ENDPOINT,
+ .data = &(const struct audioformat) {
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .channels = 2,
+ .fmt_bits = 16,
+ .iface = 3,
+ .altsetting = 4,
+ .altset_idx = 4,
+ .endpoint = 0x82,
+ .ep_attr = 0x05,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .nr_rates = 1,
+ .rate_table = (unsigned int[]) { 48000 },
+ },
+ },
+ {
+ .ifnum = -1
+ },
+ },
+ },
+},
+
+/*
* HP Wireless Audio
* When not ignored, causes instability issues for some users, forcing them to
* blacklist the entire module.
Patches currently in stable-queue which might be from hahnjo@xxxxxxxxx are
queue-5.4/alsa-usb-audio-add-quirk-for-vf0770.patch
