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| author | Daniel Mack <zonque@gmail.com> | 2011-05-25 09:09:02 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-05-25 09:36:59 +0200 |
| commit | 014950b013b7966b7e4a3ae6931c75e3c115296f (patch) | |
| tree | 2b1f0b8f92bec82244e92e2d1c72499875d3ff0c /sound/usb/quirks.c | |
| parent | 9e38658f703732cb69936553cef4bdb4e5294f3f (diff) | |
| download | lwn-014950b013b7966b7e4a3ae6931c75e3c115296f.tar.gz lwn-014950b013b7966b7e4a3ae6931c75e3c115296f.zip | |
ALSA: usb-audio: add new quirk type QUIRK_AUDIO_STANDARD_MIXER
This quirk type will let the driver assume that there is a standard
mixer on a given interface, or that a specific mixer quirks will handle
the device.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/quirks.c')
| -rw-r--r-- | sound/usb/quirks.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 2546dc808e43..2e969cbb393b 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -264,6 +264,20 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip, } /* + * Create a standard mixer for the specified interface. + */ +static int create_standard_mixer_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + if (quirk->ifnum < 0) + return 0; + + return snd_usb_create_mixer(chip, quirk->ifnum, 0); +} + +/* * audio-interface quirks * * returns zero if no standard audio/MIDI parsing is needed. @@ -295,7 +309,8 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip, [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk, [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk, - [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk + [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk, + [QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk, }; if (quirk->type < QUIRK_TYPE_COUNT) { |