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authorDaniel Mack <zonque@gmail.com>2011-05-25 09:09:02 +0200
committerTakashi Iwai <tiwai@suse.de>2011-05-25 09:36:59 +0200
commit014950b013b7966b7e4a3ae6931c75e3c115296f (patch)
tree2b1f0b8f92bec82244e92e2d1c72499875d3ff0c /sound/usb
parent9e38658f703732cb69936553cef4bdb4e5294f3f (diff)
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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')
-rw-r--r--sound/usb/quirks.c17
-rw-r--r--sound/usb/usbaudio.h1
2 files changed, 17 insertions, 1 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2546dc808e4..2e969cbb393 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) {
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 32f2a97f2f1..1e79986b577 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -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
};