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| author | Takashi Iwai <tiwai@suse.de> | 2022-04-21 08:41:00 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-04-21 10:17:17 +0200 |
| commit | 0f1f7a6661394fe4a53db254c346d6aa2dd64397 (patch) | |
| tree | 2689f84d3117cd31af33e088ed11862b4b7ca796 /sound/usb/implicit.c | |
| parent | faf5933c79545412ea63f0c3d15c261d104e1dde (diff) | |
| download | lwn-0f1f7a6661394fe4a53db254c346d6aa2dd64397.tar.gz lwn-0f1f7a6661394fe4a53db254c346d6aa2dd64397.zip | |
ALSA: usb-audio: Add quirk bits for enabling/disabling generic implicit fb
For making easier to test, add the new quirk_flags bits 17 and 18 to
enable and disable the generic implicit feedback mode. The bit 17 is
equivalent with implicit_fb=1 option, applying the generic implicit
feedback sync mode. OTOH, the bit 18 disables the implicit fb mode
forcibly.
Link: https://lore.kernel.org/r/20220421064101.12456-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/implicit.c')
| -rw-r--r-- | sound/usb/implicit.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/usb/implicit.c b/sound/usb/implicit.c index 2d444ec74202..1fd087128538 100644 --- a/sound/usb/implicit.c +++ b/sound/usb/implicit.c @@ -350,7 +350,8 @@ static int audioformat_implicit_fb_quirk(struct snd_usb_audio *chip, } /* Try the generic implicit fb if available */ - if (chip->generic_implicit_fb) + if (chip->generic_implicit_fb || + (chip->quirk_flags & QUIRK_FLAG_GENERIC_IMPLICIT_FB)) return add_generic_implicit_fb(chip, fmt, alts); /* No quirk */ @@ -387,6 +388,8 @@ int snd_usb_parse_implicit_fb_quirk(struct snd_usb_audio *chip, struct audioformat *fmt, struct usb_host_interface *alts) { + if (chip->quirk_flags & QUIRK_FLAG_SKIP_IMPLICIT_FB) + return 0; if (fmt->endpoint & USB_DIR_IN) return audioformat_capture_quirk(chip, fmt, alts); else |