At Sat, 15 Nov 2014 14:01:21 +0100, Jurgen Kramer wrote:

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

Thanks, applied.

Takashi

---

sound/usb/quirks.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index d2aa45a..a5941f8 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1146,6 +1146,20 @@ 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;
  

• }
  

• }

}

/*

1.9.3

---

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