ALSA: usb-audio: Add ctrl message delay quirk for Marantz/Denon devices

commit 6e84a8d7ac3ba246ef44e313e92bc16a1da1b04a upstream.

This patch adds a USB control message delay quirk for a few specific Marantz/Denon
devices. Without the delay the DACs will not work properly and produces the
following type of messages:

Nov 15 10:09:21 orwell kernel: [   91.342880] usb 3-13: clock source 41 is not valid, cannot use
Nov 15 10:09:21 orwell kernel: [   91.343775] usb 3-13: clock source 41 is not valid, cannot use

There are likely other Marantz/Denon devices using the same USB module which exhibit the
same problems. But as this cannot be verified I limited the patch to the devices
I could test.

The following two devices are covered by this path:
- Marantz SA-14S1
- Marantz HD-DAC1

Signed-off-by: Jurgen Kramer <gtmkramer@xs4all.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 3879eae7e8742f749710da7d795d66f0f473c6fa..734c6579b1946c92b858d2f89ce43635dc3f69c6 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -914,6 +914,20 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
        if ((le16_to_cpu(dev->descriptor.idVendor) == 0x23ba) &&
            (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
                mdelay(20);
+
+       /* Marantz/Denon devices with USB DAC functionality need a delay
+        * after each class compliant request
+        */
+       if ((le16_to_cpu(dev->descriptor.idVendor) == 0x154e) &&
+           (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS) {
+
+               switch (le16_to_cpu(dev->descriptor.idProduct)) {
+               case 0x3005: /* Marantz HD-DAC1 */
+               case 0x3006: /* Marantz SA-14S1 */
+                       mdelay(20);
+                       break;
+               }
+       }
 }
 
 /*