[PATCH 5.10 001/103] ALSA: usb-audio: Add quirk for VF0770

Greg Kroah-Hartman
2021-10-18T13:38:55Z

From: Jonas Hahnfeld <hahnjo@hahnjo.de>

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@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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/usb/quirks-table.h | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)

--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -78,6 +78,48 @@
{ 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
* skip the entire module.