Re: [PATCH] sound: Add support for Creative BT-D1 via usb sound quirks

From: Alexander Schremmer
Date: Thu Jan 03 2013 - 06:59:00 EST


On 03.01.2013 10:58, Takashi Iwai wrote:

> Thanks for the patch. The changes look OK, but could you fix trivial
> coding issues reported by scripts/checkpatch.pl and resend?

Oops, my sending workflow ate the tabs, here it is again (hopefully now
working correctly):


From: Alexander Schremmer <alex@xxxxxxxxxxxxxxx>

Support the Creative BT-D1 Bluetooth USB audio device. Before this
patch, Linux had trouble finding the correct USB descriptors and bailed
out with these messages:

no or invalid class specific endpoint descriptor

Now it still prints these messages on hotplug:

snd-usb-audio: probe of ...:1.0 failed with error -5
snd-usb-audio: probe of ...:1.2 failed with error -5
snd-usb-audio: probe of ...:1.3 failed with error -5

But the device works correctly, including the HID support.

The patch is diff'ed against 3.8-rc1 but should apply to older kernels
as well.

Signed-off-by: Alexander Schremmer <alex@xxxxxxxxxxxxxxx>

---
diff -uprN linux-3.8-rc1/sound/usb/quirks-table.h
linux-3.8-rc1-mod/sound/usb/quirks-table.h
--- linux-3.8-rc1/sound/usb/quirks-table.h 2012-12-22 02:19:00.000000000
+0100
+++ linux-3.8-rc1-mod/sound/usb/quirks-table.h 2012-12-26
11:41:28.000000000 +0100
@@ -50,6 +50,28 @@
}
},

+{
+ /* Creative BT-D1 */
+ USB_DEVICE(0x041e, 0x0005),
+ .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+ .ifnum = 1,
+ .type = QUIRK_AUDIO_FIXED_ENDPOINT,
+ .data = &(const struct audioformat) {
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .channels = 2,
+ .iface = 1,
+ .altsetting = 1,
+ .altset_idx = 1,
+ .endpoint = 0x03,
+ .ep_attr = USB_ENDPOINT_XFER_ISOC,
+ .attributes = 0,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ }
+ }
+},
+
/* Creative/Toshiba Multimedia Center SB-0500 */
{
USB_DEVICE(0x041e, 0x3048),

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