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>
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2546dc8..2e969cb 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -264,6 +264,20 @@
}
/*
+ * 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 @@
[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) {