ALSA: usb-audio: Add a quirck for B&W PX headphones
The capture interface doesn't work and the playback interface only supports 48 kHz sampling rate even though it advertises more rates. Signed-off-by: Erik Veijola <erik.veijola@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -3325,4 +3325,51 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
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}
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},
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{
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/*
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* Bower's & Wilkins PX headphones only support the 48 kHz sample rate
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* even though it advertises more. The capture interface doesn't work
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* even on windows.
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*/
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USB_DEVICE(0x19b5, 0x0021),
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.driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
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.ifnum = QUIRK_ANY_INTERFACE,
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.type = QUIRK_COMPOSITE,
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.data = (const struct snd_usb_audio_quirk[]) {
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{
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.ifnum = 0,
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.type = QUIRK_AUDIO_STANDARD_MIXER,
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},
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/* Capture */
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{
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.ifnum = 1,
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.type = QUIRK_IGNORE_INTERFACE,
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},
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/* Playback */
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{
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.ifnum = 2,
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.type = QUIRK_AUDIO_FIXED_ENDPOINT,
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.data = &(const struct audioformat) {
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.channels = 2,
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.iface = 2,
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.altsetting = 1,
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.altset_idx = 1,
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.attributes = UAC_EP_CS_ATTR_FILL_MAX |
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UAC_EP_CS_ATTR_SAMPLE_RATE,
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.endpoint = 0x03,
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.ep_attr = USB_ENDPOINT_XFER_ISOC,
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.rates = SNDRV_PCM_RATE_48000,
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.rate_min = 48000,
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.rate_max = 48000,
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.nr_rates = 1,
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.rate_table = (unsigned int[]) {
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48000
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}
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}
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},
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}
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}
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},
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#undef USB_DEVICE_VENDOR_SPEC
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