On Fri, Nov 22, 2013 at 01:12:17PM -0500, Jason Mancine wrote:

Hello, I am looking for some assistance in getting the Zoom R16 working for playback. Please let me know if this is the right forum for this...

The device is recognized, but I just can't figure out which interface is which, and how to configure them in quirks-table.h. Any help would be appreciated.

Please try with a recent kernel and see if something like this in quirks-table.h helps you:

{ .match_flags = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_CLASS, .idVendor = 0x1686, .bInterfaceClass = USB_CLASS_VENDOR_SPEC, .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) { .ifnum = QUIRK_ANY_INTERFACE, .type = QUIRK_AUTODETECT } },

Daniel

To start, the output of lsusb -v for the device is this:

Bus 001 Device 010: ID 1686:00dd ZOOM Corporation Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 0 bDeviceProtocol 255 bMaxPacketSize0 64 idVendor 0x1686 ZOOM Corporation idProduct 0x00dd bcdDevice 0.02 iManufacturer 1 iProduct 2 R16 iSerial 3 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 259 bNumInterfaces 4 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 480mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 1 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 0b 24 01 00 01 35 00 03 01 02 03 ** UNRECOGNIZED: 0c 24 02 05 01 01 00 02 03 00 00 00 ** UNRECOGNIZED: 09 24 03 08 01 03 00 05 00 ** UNRECOGNIZED: 0c 24 02 09 01 02 00 08 00 00 00 00 ** UNRECOGNIZED: 09 24 03 0c 01 01 00 09 00 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 05 01 01 00 ** UNRECOGNIZED: 14 24 02 01 02 04 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x006c 1x 108 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 2 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 0c 01 01 00 ** UNRECOGNIZED: 14 24 02 01 08 04 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x84 EP 4 IN bmAttributes 13 Transfer Type Isochronous Synch Type Synchronous Usage Type Data wMaxPacketSize 0x01a0 1x 416 bytes bInterval 1 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 3 bInterfaceProtocol 0 iInterface 0 ** UNRECOGNIZED: 07 24 01 00 01 41 00 ** UNRECOGNIZED: 06 24 02 01 01 00 ** UNRECOGNIZED: 06 24 02 02 02 00 ** UNRECOGNIZED: 09 24 03 01 03 01 02 01 00 ** UNRECOGNIZED: 09 24 03 02 04 01 01 01 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 0 bDeviceProtocol 255 bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0001 Self Powered

---

This is the quirk that Clemens provided on the linux-audio mail list...the device is recognized, but no capture/playback:

{ /* ZOOM R16 in USB 2.0 mode */ USB_DEVICE(0x1686, 0x00dd), .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_IGNORE_INTERFACE }, { .ifnum = 1, .type = QUIRK_AUDIO_STANDARD_INTERFACE }, { .ifnum = 2, .type = QUIRK_AUDIO_STANDARD_INTERFACE }, { .ifnum = 3, .type = QUIRK_MIDI_STANDARD_INTERFACE }, { .ifnum = .1 }, } } },

Now....despite there being no #4 interface in lsusb, if I append the following to the above quirk I get all 8 channels of capture working. I am more confused than ever. :)

  {
        .ifnum = 4,
        .type = QUIRK_AUDIO_FIXED_ENDPOINT,
        .data = & (const struct audioformat) {
           .formats = SNDRV_PCM_FMTBIT_S24_LE,
           .channels = 8,
           .iface = 1,
           .altsetting = 1,
           .altset_idx = 1,
           .attributes = UAC_EP_CS_ATTR_SAMPLE_RATE,
            .endpoint = 0x84,
            .ep_attr = 13,
            .rates = SNDRV_PCM_RATE_44100 |
                SNDRV_PCM_RATE_48000 |
                SNDRV_PCM_RATE_88200 |
              SNDRV_PCM_RATE_96000,
           .rate_min = 44100,
           .rate_max = 96000,
           .nr_rates = 4,
           .rate_table = (unsigned int[]) {
                 44100, 48000, 88200, 96000
           }
        }
     },

Obviously, this is not the correct solution and I can't make playback work by adding additional .ifnums. I am quite certain that interface 1 is capture and 2 is playback but if I add the same info to either of those sections my entire system freezes when I plug in the device.

Thanks, jason _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel