lkml.org 
[lkml]   [2016]   [Feb]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3.19.y-ckt 23/47] ALSA: usb-audio: Fix TEAC UD-501/UD-503/NT-503 usb delay
Date
3.19.8-ckt15 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Guillaume Fougnies <guillaume@eulerian.com>

commit 5a4ff9ec8d6edd2ab1cfe8ce6a080d6e57cbea9a upstream.

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@eulerian.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
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 9d8483f..73d7a0e 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1180,8 +1180,12 @@ 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,
@@ -1196,6 +1200,14 @@ 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
*/
--
1.9.1
\
 
 \ /
  Last update: 2016-02-10 00:21    [W:0.164 / U:40.648 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site