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ALSA: usb-audio: add new quirk type QUIRK_AUDIO_STANDARD_MIXER

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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>
This commit is contained in:
Daniel Mack 2011-05-25 09:09:02 +02:00 committed by Takashi Iwai
parent 9e38658f70
commit 014950b013
2 changed files with 17 additions and 1 deletions
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17
sound/usb/quirks.c
View File

@ -263,6 +263,20 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
return 0;
}
/*
* 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
*
@ -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) {

1
sound/usb/usbaudio.h
View File

@ -84,6 +84,7 @@ enum quirk_type {
QUIRK_AUDIO_FIXED_ENDPOINT,
QUIRK_AUDIO_EDIROL_UAXX,
QUIRK_AUDIO_ALIGN_TRANSFER,
QUIRK_AUDIO_STANDARD_MIXER,
QUIRK_TYPE_COUNT
};