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linux/sound/usb
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Lushih Hsieh 002c4d2d84 ALSA: usb-audio: Add native DSD quirks for PureAudio DAC series 
[ Upstream commit 21a9ab5b90 ]

The PureAudio APA DAC and Lotus DAC5 series are USB Audio
2.0 Class devices that support native Direct Stream Digital (DSD)
playback via specific vendor protocols.

Without these quirks, the devices may only function in standard
PCM mode, or fail to correctly report their DSD format capabilities
to the ALSA framework, preventing native DSD playback under Linux.

This commit adds new quirk entries for the mentioned DAC models
based on their respective Vendor/Product IDs (VID:PID), for example:
0x16d0:0x0ab1 (APA DAC), 0x16d0:0xeca1 (DAC5 series), etc.

The quirk ensures correct DSD format handling by setting the required
SNDRV_PCM_FMTBIT_DSD_U32_BE format bit and defining the DSD-specific
Audio Class 2.0 (AC2.0) endpoint configurations. This allows the ALSA
DSD API to correctly address the device for high-bitrate DSD streams,
bypassing the need for DoP (DSD over PCM).

Test on APA DAC and Lotus DAC5 SE under Arch Linux.

Tested-by: Lushih Hsieh <bruce@mail.kh.edu.tw>
Signed-off-by: Lushih Hsieh <bruce@mail.kh.edu.tw>
Link: https://patch.msgid.link/20251114052053.54989-1-bruce@mail.kh.edu.tw
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-12 18:37:20 +01:00
..
6fire ALSA: 6fire: Release resources at card release 2024-12-05 14:01:58 +01:00
bcd2000 ALSA: bcd2000: refactor deprecated strncpy 2023-07-29 13:53:56 +02:00
caiaq ALSA: caiaq: Use snd_card_free_when_closed() at disconnection 2024-12-05 14:01:58 +01:00
hiface ALSA: usb: Use *-y instead of *-objs in Makefile 2024-05-08 18:17:53 +02:00
line6 ALSA: line6: update contact information 2024-10-10 14:02:57 +02:00
misc ALSA: usb: Use *-y instead of *-objs in Makefile 2024-05-08 18:17:53 +02:00
usx2y ALSA: usx2y: validate nrpacks module parameter on probe 2025-03-13 13:02:05 +01:00
card.c ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card 2025-10-23 16:20:37 +02:00
card.h ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless 2022-12-22 09:13:54 +01:00
clock.c ALSA: usb-audio: Fix out of bounds reads when finding clock sources 2024-12-05 14:02:41 +01:00
clock.h ALSA: usb-audio: Constify audioformat pointer references 2020-11-23 15:15:36 +01:00
endpoint.c ALSA: usb-audio: Fix missing unlock at error path of maxpacksize check 2025-12-01 11:43:36 +01:00
endpoint.h ALSA: usb-audio: Remove unused function declaration 2023-08-01 16:56:57 +02:00
format.c ALSA: usb-audio: Add second USB ID for Jabra Evolve 65 headset 2025-05-09 09:50:29 +02:00
format.h ALSA: usb: initial USB Audio Device Class 3.0 support 2018-03-21 11:46:33 +01:00
helper.c ALSA: usb-audio: Support multiple control interfaces 2024-08-12 16:17:46 +02:00
helper.h ALSA: usb-audio: Support multiple control interfaces 2024-08-12 16:17:46 +02:00
implicit.c ALSA: usb-audio: Add implicit feedback quirk for RODE AI-1 2025-06-19 15:32:34 +02:00
implicit.h ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless 2022-12-22 09:13:54 +01:00
Kconfig ALSA: usb-audio: USB MIDI 2.0 UMP support 2023-05-23 12:11:02 +02:00
Makefile ALSA: usb: Use *-y instead of *-objs in Makefile 2024-05-08 18:17:53 +02:00
media.c ALSA: pcm: Don't embed device 2023-08-17 09:23:45 +02:00
media.h media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
midi.c ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free 2025-10-12 12:57:18 +02:00
midi.h ALSA: usb-audio: Manage number of rawmidis globally 2023-05-23 12:11:00 +02:00
midi2.c ALSA: usb-audio: Update UMP group attributes for GTB blocks, too 2024-08-07 11:31:38 +02:00
midi2.h ALSA: usb-audio: USB MIDI 2.0 UMP support 2023-05-23 12:11:02 +02:00
mixer.c ALSA: usb-audio: fix uac2 clock source at terminal parser 2025-12-01 11:43:37 +01:00
mixer.h ALSA: usb-audio: Add input value sanity checks for standard types 2024-08-06 18:27:08 +02:00
mixer_maps.c ALSA: usb-audio: Rename ALSA kcontrol PCM and PCM1 for the KTMicro sound card 2025-06-27 11:11:39 +01:00
mixer_quirks.c ALSA: usb-audio: move mixer_quirks' min_mute into common quirk 2025-10-02 13:44:07 +02:00
mixer_quirks.h ALSA: usb-audio: Drop CONFIG_PM ifdefs 2021-12-06 10:19:40 +01:00
mixer_s1810c.c ALSA: usb-audio: add mono main switch to Presonus S1824c 2025-11-13 15:34:31 -05:00
mixer_s1810c.h ALSA: usb-audio: Add support for Presonus Studio 1810c 2020-02-15 09:46:16 +01:00
mixer_scarlett.c ALSA: usb-audio: Support multiple control interfaces 2024-08-12 16:17:46 +02:00
mixer_scarlett.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mixer_scarlett2.c ALSA: scarlett2: Add retry on -EPROTO from scarlett2_usb_tx() 2025-08-15 12:14:12 +02:00
mixer_scarlett2.h ALSA: scarlett2: Rename scarlett_gen2 to scarlett2 2023-10-27 11:22:59 +02:00
mixer_us16x08.c ALSA: usb-audio: US16x08: Initialize array before use 2025-01-09 13:33:40 +01:00
mixer_us16x08.h ALSA: usb: Constify snd_kcontrol_new items 2020-01-03 09:24:34 +01:00
pcm.c ALSA: usb-audio: Fix broken resume due to UAC3 power state 2023-06-16 09:28:08 +02:00
pcm.h ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless 2022-12-22 09:13:54 +01:00
power.c ALSA: usb-audio: Support multiple control interfaces 2024-08-12 16:17:46 +02:00
power.h ALSA: usb-audio: Support multiple control interfaces 2024-08-12 16:17:46 +02:00
proc.c ALSA: usb-audio: Show sync endpoint information in proc outputs 2020-11-23 15:16:45 +01:00
proc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
quirks-table.h ALSA: usb-audio: Add extra PID for RME Digiface USB 2024-12-14 20:03:23 +01:00
quirks.c ALSA: usb-audio: Add native DSD quirks for PureAudio DAC series 2025-12-12 18:37:20 +01:00
quirks.h ALSA: usb-audio: Register card at the last interface 2022-09-06 11:04:56 +02:00
stream.c ALSA: usb-audio: Fix size validation in convert_chmap_v3() 2025-08-28 16:31:13 +02:00
stream.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
usbaudio.h ALSA: usb-audio: move mixer_quirks' min_mute into common quirk 2025-10-02 13:44:07 +02:00
validate.c ALSA: usb-audio: Add validation of UAC2/UAC3 effect units 2025-11-13 15:34:14 -05:00