linux-bl808/sound
Marco Giunta 2966492372 ALSA: usb-audio: Fix microphone sound on Jieli webcam.
When a Jieli Technology USB Webcam is connected, the video part works
well, but the mic sound is speeded up. On dmesg there are messages
about different rates from the runtime rates, warnings about volume
resolution and lastly, the log is filled, every 5 seconds, with
retire_capture_urb error messages.

The mic works only when ep packet size is set to wMaxPacketSize (normal
sound and no more retire_capture_urb error messages). Skipping reading
sample rate, fixes the messages about different rates and forcing a volume
resolution, fixes warnings about volume range. I have arbitrarily choosed
the value (16): I read in a comment that there should be no more than 255
levels, so 4096 (max volume) / 16 = 0-255.

Signed-off-by: Marco Giunta <giun7a@gmail.com>
Link: https://lore.kernel.org/r/20211018162552.12082-1-giun7a@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-10-19 08:07:01 +02:00
..
ac97
aoa
arm
atmel
core
drivers
firewire
hda
i2c
isa
mips
oss
parisc
pci ALSA: hda/realtek: Fixes HP Spectre x360 15-eb1xxx speakers 2021-10-15 09:41:49 +02:00
pcmcia
ppc
sh
soc ASoC: Fixes for v5.15 2021-10-15 17:43:46 +02:00
sparc
spi
synth
usb ALSA: usb-audio: Fix microphone sound on Jieli webcam. 2021-10-19 08:07:01 +02:00
virtio
x86
xen
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c