linux-stable/sound
Takashi Iwai 316791b556 ALSA: usb-audio: Generic application of implicit fb to Roland/BOSS devices
Through the examinations and experiments with lots of Roland and BOSS
USB-audio devices, we found out that the recently introduced
full-duplex operations with the implicit feedback mode work fine for
quite a few devices, while the others need only the capture-side quirk
to enforce the full-duplex mode.  The recent commit d86f43b17e
("ALSA: usb-audio: Add support for many Roland devices' implicit
feedback quirks") tried to add such quirk entries manually in the
lists, but this turned out to be too many and error-prone, hence it
was reverted again.

This patch is another attempt to cover those missing Roland/BOSS
devices but in a more generic way.  It matches the devices with the
vendor ID 0x0582, and checks whether they are with both ASYNC sync
types or ASYNC is only for capture device.  In the former case, it's
the device with the implicit feedback mode, and applies accordingly.
In both cases, the capture stream requires always the full-duplex
mode, and we apply the known capture quirk for that, too.

Basically the already existing BOSS device quirk entries become
redundant after this generic matching, so those are removed.  Although
the capture_implicit_fb_quirks[] table became empty and superfluous, I
keep it for now, so that people can put a special device easily at any
time later again.

Link: https://lore.kernel.org/r/CAOsVg8rA61B=005_VyUwpw3piVwA7Bo5fs1GYEB054efyzGjLw@mail.gmail.com
Link: https://lore.kernel.org/r/20210414083255.9527-1-tiwai@suse.de
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212519
Tested-by: Lucas Endres <jaffa225man@gmail.com>
Link: https://lore.kernel.org/r/20210422120413.457-2-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-04-22 18:19:47 +02:00
..
ac97 ALSA: ac97: Constify static struct attribute_group 2021-01-31 09:49:58 +01:00
aoa ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
arm ARM updates for 5.12-rc1: 2021-02-22 14:27:07 -08:00
atmel
core ALSA: control: Fix racy management of user ctl memory size account 2021-04-16 09:57:49 +02:00
drivers Merge branch 'for-linus' into for-next 2021-04-09 09:57:03 +02:00
firewire ALSA: control - add generic LED API 2021-03-30 17:42:40 +02:00
hda ALSA: control - add generic LED API 2021-03-30 17:42:40 +02:00
i2c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
isa module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
mips module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
oss ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
parisc
pci ALSA: hda/realtek: Enable mute/micmute LEDs and limit mic boost on EliteBook 845 G8 2021-04-20 14:37:40 +02:00
pcmcia module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
ppc ALSA: control - add generic LED API 2021-03-30 17:42:40 +02:00
sh module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
soc ASoC: fsl_esai: Fix TDM slot setup for I2S mode 2021-04-02 16:24:16 +01:00
sparc module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
spi
synth
usb ALSA: usb-audio: Generic application of implicit fb to Roland/BOSS devices 2021-04-22 18:19:47 +02:00
virtio ALSA: virtio: use module_virtio_driver() to simplify the code 2021-04-12 12:15:34 +02:00
x86 module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
xen module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
ac97_bus.c
Kconfig ALSA: virtio: add virtio sound driver 2021-03-07 09:07:16 +01:00
last.c
Makefile ALSA: virtio: add virtio sound driver 2021-03-07 09:07:16 +01:00
sound_core.c