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ALSA: usb-audio: Add quirk_flags module option

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This patch adds a new module option, quirk_flags, for allowing user to
try some additional device-specific quirk behavior more easily.
When this option is set to non-zero, it overrides the quirk_flags, and
the specific workaround is applied.

Link: https://lore.kernel.org/r/20210729074404.19728-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-07-29 09:44:03 +02:00
parent 68e851ee4c
commit 5b51785442
1 changed files with 7 additions and 1 deletions
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6
sound/usb/card.c
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@ -71,6 +71,7 @@ static bool autoclock = true;
static char *quirk_alias[SNDRV_CARDS];
static char *delayed_register[SNDRV_CARDS];
static bool implicit_fb[SNDRV_CARDS];
static unsigned int quirk_flags[SNDRV_CARDS];
bool snd_usb_use_vmalloc = true;
bool snd_usb_skip_validation;
@ -98,6 +99,8 @@ module_param_array(delayed_register, charp, NULL, 0444);
MODULE_PARM_DESC(delayed_register, "Quirk for delayed registration, given by id:iface, e.g. 0123abcd:4.");
module_param_array(implicit_fb, bool, NULL, 0444);
MODULE_PARM_DESC(implicit_fb, "Apply generic implicit feedback sync mode.");
module_param_array(quirk_flags, uint, NULL, 0444);
MODULE_PARM_DESC(quirk_flags, "Driver quirk bit flags.");
module_param_named(use_vmalloc, snd_usb_use_vmalloc, bool, 0444);
MODULE_PARM_DESC(use_vmalloc, "Use vmalloc for PCM intermediate buffers (default: yes).");
module_param_named(skip_validation, snd_usb_skip_validation, bool, 0444);
@ -631,6 +634,9 @@ static int snd_usb_audio_create(struct usb_interface *intf,
INIT_LIST_HEAD(&chip->midi_list);
INIT_LIST_HEAD(&chip->mixer_list);
if (quirk_flags[idx])
chip->quirk_flags = quirk_flags[idx];
else
snd_usb_init_quirk_flags(chip);
card->private_free = snd_usb_audio_free;