On Tue, 26 Jan 2016 00:28:27 +0100,
Guillaume Fougnies wrote:
>
> ALSA: usb: Fix TEAC UD-501/UD-503/NT-503 usb delay
>
> TEAC UD-501/UD-503/NT-503 fail to switch properly between different rate/format.
> Similar to 'Playback Design', this patch corrects the invalid clock source error
> for TEAC products and avoids complete freeze of the usb interface of 503 series.
>
> Signed-off-by: Guillaume Fougnies <guillaume@xxxxxxxxxxxx>
Applied, thanks.
Takashi
> ---
> sound/usb/quirks.c | 14 +++++++++++++-
> 1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
> index 23ea6d8..a75d9ce 100644
> --- a/sound/usb/quirks.c
> +++ b/sound/usb/quirks.c
> @@ -1205,8 +1205,12 @@ void snd_usb_set_interface_quirk(struct usb_device *dev)
> * "Playback Design" products need a 50ms delay after setting the
> * USB interface.
> */
> - if (le16_to_cpu(dev->descriptor.idVendor) == 0x23ba)
> + switch (le16_to_cpu(dev->descriptor.idVendor)) {
> + case 0x23ba: /* Playback Design */
> + case 0x0644: /* TEAC Corp. */
> mdelay(50);
> + break;
> + }
> }
>
> void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
> @@ -1221,6 +1225,14 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
> (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
> mdelay(20);
>
> + /*
> + * "TEAC Corp." products need a 20ms delay after each
> + * class compliant request
> + */
> + if ((le16_to_cpu(dev->descriptor.idVendor) == 0x0644) &&
> + (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
> + mdelay(20);
> +
> /* Marantz/Denon devices with USB DAC functionality need a delay
> * after each class compliant request
> */
> --
> 2.7.0.rc3
>
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