linux-stable/sound
Roope Salmi 46f5710f0b ALSA: usb-audio: Add quirk for Focusrite Scarlett Solo
The device reports Synch: Synchronous on the playback interface.
This causes regular audible napping on sample rates that are not multiples
of 1 kHz. Fix to Synch: Asynchronous.

Specifically observed on Focusrite Scarlett Solo 2nd generation. I assume
the first generation model has a different device ID. A first generation
Scarlett 2i2 I was able to test advertised Synch: Asynchronous by default.

For example, with a sample rate of 44100 Hz, a silent sample is played
every 40.96 seconds (likely 44.0 samples instead of 44.1 transmitted per
USB frame on average, 4096 being the size of some internal buffer).
There may be some other bug at play here since this doesn't happen
on other platforms. However, a feedback endpoint is listed and using it
fixes the issue. That is the only change in the quirk,
but I didn't find a way to declare only it.

Tested on two units and on two different computers.

Signed-off-by: Roope Salmi <rpsalmi@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-04-15 11:37:27 +02:00
..
ac97 ALSA: ac97: Fix of-node refcount unbalance 2019-02-19 22:20:14 +01:00
aoa ALSA: aoa: Fix of-node refcount unbalance 2019-02-19 22:20:45 +01:00
arm ALSA: arm: Avoid passing NULL to memory allocators 2019-02-04 16:51:46 +01:00
atmel ALSA: atmel: Drop superfluous PCM preallocation error checks 2019-02-06 10:28:39 +01:00
core Merge branch 'for-linus' into for-next 2019-04-13 10:09:46 +02:00
drivers ALSA: aloop: Support S24 sample formats 2019-03-25 16:39:18 +01:00
firewire ALSA: firewire-lib: use 8 byte header for IR context to get isochronous cycle 2019-03-18 14:50:35 +01:00
hda ALSA: hda: Initialize ext-bus-specific fields in snd_hdac_bus_init(), too 2019-04-13 10:10:26 +02:00
i2c ALSA: i2c: Clean up with new procfs helpers 2019-02-06 18:11:56 +01:00
isa ALSA: sb8: add a check for request_region 2019-03-16 10:30:27 +01:00
mips ALSA: mips: pass struct device to DMA API functions 2019-02-01 17:15:44 +01:00
oss
parisc ALSA: parisc: Drop superfluous PCM preallocation error checks 2019-02-06 10:29:03 +01:00
pci ALSA: hda: Initialize power_state field properly 2019-04-13 10:04:49 +02:00
pcmcia ALSA: pcmcia: Clean up with new procfs helpers 2019-02-06 18:11:57 +01:00
ppc ALSA: ppc: Fix of-node refcount unbalance 2019-02-19 22:20:46 +01:00
sh ALSA: sh: Drop superfluous PCM preallocation error checks 2019-02-06 10:29:24 +01:00
soc ASoC: wcd9335: Fix missing regmap requirement 2019-04-10 17:07:59 +01:00
sparc ASoC: Updates for v5.1 2019-02-08 14:20:32 +01:00
spi ALSA: spi: Drop superfluous PCM preallocation error checks 2019-02-06 10:29:36 +01:00
synth ALSA: emux: Add support of loading GUS-patch 2019-03-26 17:32:02 +01:00
usb ALSA: usb-audio: Add quirk for Focusrite Scarlett Solo 2019-04-15 11:37:27 +02:00
x86 ALSA: x86: Avoid passing NULL to memory allocators 2019-02-04 16:51:34 +01:00
xen ALSA: xen-front: Do not use stream buffer size before it is set 2019-04-04 14:44:18 +02:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c