linux-kernel - [PATCH v2 0/3] ALSA: usb-audio: add module param device_quirk

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Message-Id: <20250912-sound-v2-0-01ea3d279f4b@uniontech.com>
Date: Fri, 12 Sep 2025 14:48:57 +0800
From: Cryolitia PukNgae via B4 Relay <devnull+cryolitia.uniontech.com@...nel.org>
To: Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
 Jonathan Corbet <corbet@....net>
Cc: linux-sound@...r.kernel.org, linux-usb@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, 
 Mingcong Bai <jeffbai@...c.io>, Kexy Biscuit <kexybiscuit@...c.io>, 
 Nie Cheng <niecheng1@...ontech.com>, Zhan Jun <zhanjun@...ontech.com>, 
 Feng Yuan <fengyuan@...ontech.com>, qaqland <anguoli@...ontech.com>, 
 kernel@...ontech.com, Cryolitia PukNgae <cryolitia@...ontech.com>
Subject: [PATCH v2 0/3] ALSA: usb-audio: add module param
 device_quirk_flags

As an implementation of what has been discussed previously[1].

> An open question is whether we may want yet a new module option or
> rather extend the existing quirk option to accept the strings
> instead.  Basically, when the given argument has a colon, it's a new
> syntax.  If it's only a number, it's an old syntax, and parse like
> before.  But, I'm open for either way (a new option or extend the
> existing one).

I would like to add a new param. The existed param
`static unsigned int quirk_flags[SNDRV_CARDS]` seems to related to
some sequence the card probed. To be honest, I havn't fully understood
it. And it seems hard to improve it while keeping compatibility.

1. https://lore.kernel.org/all/87h5xm5g7f.wl-tiwai@suse.de/

Signed-off-by: Cryolitia PukNgae <cryolitia@...ontech.com>
---
Changes in v2:
- Cleaned up some internal rebase confusion, sorry for that
- Link to v1: https://lore.kernel.org/r/20250912-sound-v1-0-cc9cfd9f2d01@uniontech.com

---
Cryolitia PukNgae (3):
      ALSA: usb-audio: add two-way convert between name and bit for QUIRK_FLAG_*
      ALSA: usb-audio: add module param device_quirk_flags
      ALSA: doc: add docs about device_device_quirk_flags in snd-usb-audio

 Documentation/sound/alsa-configuration.rst | 105 ++++++++++++------
 sound/usb/card.c                           | 165 ++++++++++++++++++++++++++++-
 sound/usb/quirks.c                         | 110 ++++++++++++++++++-
 sound/usb/quirks.h                         |   5 +
 sound/usb/usbaudio.h                       |  14 +++
 5 files changed, 362 insertions(+), 37 deletions(-)
---
base-commit: 82ad508a85dc64cb4bd648edec5a4ce741648426
change-id: 20250910-sound-a91c86c92dba

Best regards,
-- 
Cryolitia PukNgae <cryolitia@...ontech.com>