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    Subject[PATCH 4.9 08/65] ALSA: usb-audio: Add a quirck for B&W PX headphones
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Erik Veijola <erik.veijola@gmail.com>

    commit 240a8af929c7c57dcde28682725b29cf8474e8e5 upstream.

    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>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    sound/usb/quirks-table.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++
    1 file changed, 47 insertions(+)

    --- a/sound/usb/quirks-table.h
    +++ b/sound/usb/quirks-table.h
    @@ -3277,4 +3277,51 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge
    }
    },

    +{
    + /*
    + * Bower's & Wilkins PX headphones only support the 48 kHz sample rate
    + * even though it advertises more. The capture interface doesn't work
    + * even on windows.
    + */
    + USB_DEVICE(0x19b5, 0x0021),
    + .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
    + .ifnum = QUIRK_ANY_INTERFACE,
    + .type = QUIRK_COMPOSITE,
    + .data = (const struct snd_usb_audio_quirk[]) {
    + {
    + .ifnum = 0,
    + .type = QUIRK_AUDIO_STANDARD_MIXER,
    + },
    + /* Capture */
    + {
    + .ifnum = 1,
    + .type = QUIRK_IGNORE_INTERFACE,
    + },
    + /* Playback */
    + {
    + .ifnum = 2,
    + .type = QUIRK_AUDIO_FIXED_ENDPOINT,
    + .data = &(const struct audioformat) {
    + .formats = SNDRV_PCM_FMTBIT_S16_LE,
    + .channels = 2,
    + .iface = 2,
    + .altsetting = 1,
    + .altset_idx = 1,
    + .attributes = UAC_EP_CS_ATTR_FILL_MAX |
    + UAC_EP_CS_ATTR_SAMPLE_RATE,
    + .endpoint = 0x03,
    + .ep_attr = USB_ENDPOINT_XFER_ISOC,
    + .rates = SNDRV_PCM_RATE_48000,
    + .rate_min = 48000,
    + .rate_max = 48000,
    + .nr_rates = 1,
    + .rate_table = (unsigned int[]) {
    + 48000
    + }
    + }
    + },
    + }
    + }
    +},
    +
    #undef USB_DEVICE_VENDOR_SPEC

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