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ALSA: usb-audio: Fix microphone sound on Opencomm2 Headset

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commit 6a83d6f3bb3c329a73e3483651fb77b78bac1878 upstream.

When a Opencomm2 Headset is connected to a Bluetooth USB dongle,
the audio playback functions properly, but the microphone does not work.

In the dmesg logs, there are messages indicating that the init_pitch
function fails when the capture process begins.

The microphone only functions when the ep pitch control is not set.

Toggling the pitch control off bypasses the init_piatch function
and allows the microphone to work.

Signed-off-by: WhaleChang <whalechang@google.com>
Link: https://lore.kernel.org/r/20231006044852.4181022-1-whalechang@google.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
WhaleChang 2023-10-06 12:48:49 +08:00 committed by Greg Kroah-Hartman
parent 5b5e58299e
commit a01d68b6c6
1 changed files with 5 additions and 1 deletions
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6
sound/usb/quirks.c
View File

@ -1725,7 +1725,11 @@ void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
/* mic works only when ep packet size is set to wMaxPacketSize */
fp->attributes |= UAC_EP_CS_ATTR_FILL_MAX;
break;
case USB_ID(0x3511, 0x2b1e): /* Opencomm2 UC USB Bluetooth dongle */
/* mic works only when ep pitch control is not set */
if (stream == SNDRV_PCM_STREAM_CAPTURE)
fp->attributes &= ~UAC_EP_CS_ATTR_PITCH_CONTROL;
break;
}
}