Skip to content

Commit

Permalink
ALSA: usb-audio: Add quirk for VF0770
Browse files Browse the repository at this point in the history
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@hahnjo.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211012200906.3492-1-hahnjo@hahnjo.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
  • Loading branch information
hahnjo authored and tiwai committed Oct 12, 2021
1 parent b37a151 commit 48827e1
Showing 1 changed file with 42 additions and 0 deletions.
42 changes: 42 additions & 0 deletions sound/usb/quirks-table.h
Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,48 @@
/* E-Mu 0204 USB */
{ USB_DEVICE_VENDOR_SPEC(0x041e, 0x3f19) },

/*
* 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
Expand Down

0 comments on commit 48827e1

Please sign in to comment.