[ALSA] usb-audio - enable high speed (not) on Audigy 2 NX
USB generic driver
The SB Audigy 2 NX needs a special boot-up command before it works in
high speed mode.
However, we don't actually enable it yet because high speed
synchronization doesn't seem to work with this device.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index da1fe0f..34d5f58 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -2925,6 +2925,25 @@
return 0;
}
+static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
+{
+#if 0
+ /* TODO: enable this when high speed synchronization actually works */
+ u8 buf = 1;
+
+ snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 0, 0, &buf, 1, 1000);
+ if (buf == 0) {
+ snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
+ 1, 2000, NULL, 0, 1000);
+ return -ENODEV;
+ }
+#endif
+ return 0;
+}
+
/*
* audio-interface quirks
@@ -3154,6 +3173,11 @@
goto __err_val;
config = dev->actconfig;
}
+ /* SB Audigy 2 NX needs its own boot-up magic, too */
+ if (id == USB_ID(0x041e, 0x3020)) {
+ if (snd_usb_audigy2nx_boot_quirk(dev) < 0)
+ goto __err_val;
+ }
/*
* found a config. now register to ALSA
