diff options
| -rw-r--r-- | sound/usb/mixer_quirks.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index 539044c0c644..e97814dc9025 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -4588,6 +4588,24 @@ static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer, } } +static void snd_usb_mv_silicon_quirks(struct usb_mixer_interface *mixer, + struct usb_mixer_elem_info *cval, + struct snd_kcontrol *kctl) +{ + if (cval->min == 0 && cval->max == 4096 && cval->res == 1) { + /* The final effects will be printed later. */ + usb_audio_info(mixer->chip, "applying MV-SILICON quirks (0/4096/1 variant)\n"); + + /* Respect MIN_MUTE set by module parameters. */ + if (!(mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE)) + mixer->chip->quirk_flags |= QUIRK_FLAG_MIXER_PLAYBACK_LINEAR_VOL; + if (!(mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_CAPTURE_MIN_MUTE)) + mixer->chip->quirk_flags |= QUIRK_FLAG_MIXER_CAPTURE_LINEAR_VOL; + } else { + usb_audio_dbg(mixer->chip, "not applying MV-SILICON quirks on unknown variant"); + } +} + /* * Some Plantronics headsets have control names that don't meet ALSA naming * standards. This function fixes nonstandard source names. By the time @@ -4664,6 +4682,10 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer, break; } + if (cval->control == UAC_FU_VOLUME && + !strncmp(mixer->chip->card->longname, "MV-SILICON", 10)) + snd_usb_mv_silicon_quirks(mixer, cval, kctl); + /* lowest playback value is muted on some devices */ if (mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE) if (strstr(kctl->id.name, "Playback")) { |