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charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Cc: alsa-devel@alsa-project.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Hi Mike, I'm getting this: [Oct14 18:21] snd_usb_audio:set_format: usb 1-4: setting usb interface 1:1 [ +0.000003] snd_usb_audio:snd_usb_add_endpoint: usb 1-4: Re-using EP d in iface 1,1 @00000000d0aa6911 [ +0.000018] snd_usb_audio:snd_usb_endpoint_set_params: usb 1-4: Setting params for ep #d (type 0, 3 urbs), ret=0 [ +0.000002] snd_usb_audio:start_endpoints: usb 1-4: Starting data EP @00000000d0aa6911 Cheers, Keith On Wed, 14 Oct 2020 at 17:46, Mike Oliphant wrote: > Hi Keith, > > The lsusb output just shows that the endpoint is there, but not that it is > getting connected when the device is initialized. Can you check dmesg > output when you use the device for playback? > > This is what I see from dmesg when the implicit feedback endpoint is being > used: > > [ 26.787360] usb 1-1.1: setting usb interface 1:1 > [ 26.787367] Creating new playback data endpoint #d > [ 26.787375] Creating new capture data endpoint #8e > [ 26.787678] usb 1-1.1: Setting params for ep #d (type 0, 12 urbs), ret=0 > [ 26.787685] usb 1-1.1: match_endpoint_audioformats: (fmt @6bc43c84) > score 2 > [ 26.787745] usb 1-1.1: Setting params for ep #8e (type 0, 12 urbs), > ret=0 > [ 26.787751] usb 1-1.1: Starting data EP @a14130b5 > [ 26.788420] usb 1-1.1: Starting sync EP @720fb7cf > > Note the "Starting sync EP". > > Mike > > On Wed, Oct 14, 2020 at 9:35 AM Mailing Lists > wrote: > >> On Wed, 14 Oct 2020 at 17:12, Mike Oliphant >> wrote: >> >>> Keith - are you getting an implicit feedback endpoint created when you >>> run with the patch? >>> >> >> Hi Mike, >> >> It appears that I do. For reference I'm on kernel 5.4.0-51: >> >> Bus 001 Device 007: ID 0582:01d6 Roland Corp. GT-1 >> Device Descriptor: >> bLength 18 >> bDescriptorType 1 >> bcdUSB 2.00 >> bDeviceClass 255 Vendor Specific Class >> bDeviceSubClass 0 >> bDeviceProtocol 255 >> bMaxPacketSize0 64 >> idVendor 0x0582 Roland Corp. >> idProduct 0x01d6 >> bcdDevice 0.00 >> iManufacturer 1 BOSS >> iProduct 2 GT-1 >> iSerial 0 >> bNumConfigurations 1 >> Configuration Descriptor: >> bLength 9 >> bDescriptorType 2 >> wTotalLength 0x00bc >> bNumInterfaces 4 >> bConfigurationValue 1 >> iConfiguration 0 >> bmAttributes 0xc0 >> Self Powered >> MaxPower 0mA >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 0 >> bAlternateSetting 0 >> bNumEndpoints 0 >> bInterfaceClass 255 Vendor Specific Class >> bInterfaceSubClass 255 Vendor Specific Subclass >> bInterfaceProtocol 0 >> iInterface 0 >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 1 >> bAlternateSetting 0 >> bNumEndpoints 0 >> bInterfaceClass 255 Vendor Specific Class >> bInterfaceSubClass 2 >> bInterfaceProtocol 2 >> iInterface 0 >> ** UNRECOGNIZED: 06 24 f1 01 00 00 >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 1 >> bAlternateSetting 1 >> bNumEndpoints 1 >> bInterfaceClass 255 Vendor Specific Class >> bInterfaceSubClass 2 >> bInterfaceProtocol 2 >> iInterface 0 >> ** UNRECOGNIZED: 07 24 01 01 00 01 00 >> ** UNRECOGNIZED: 0b 24 02 01 02 04 18 01 44 ac 00 >> ** UNRECOGNIZED: 06 24 f1 04 16 00 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x0d EP 13 OUT >> bmAttributes 5 >> Transfer Type Isochronous >> Synch Type Asynchronous >> Usage Type Data >> wMaxPacketSize 0x0038 1x 56 bytes >> bInterval 1 >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 2 >> bAlternateSetting 0 >> bNumEndpoints 0 >> bInterfaceClass 255 Vendor Specific Class >> bInterfaceSubClass 2 >> bInterfaceProtocol 1 >> iInterface 0 >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 2 >> bAlternateSetting 1 >> bNumEndpoints 1 >> bInterfaceClass 255 Vendor Specific Class >> bInterfaceSubClass 2 >> bInterfaceProtocol 1 >> iInterface 0 >> ** UNRECOGNIZED: 07 24 01 07 00 01 00 >> ** UNRECOGNIZED: 0b 24 02 01 02 04 18 01 44 ac 00 >> ** UNRECOGNIZED: 06 24 f1 04 16 00 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x8e EP 14 IN >> bmAttributes 37 >> Transfer Type Isochronous >> Synch Type Asynchronous >> Usage Type Implicit feedback Data >> wMaxPacketSize 0x0038 1x 56 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: 06 24 f1 02 01 01 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x03 EP 3 OUT >> bmAttributes 2 >> Transfer Type Bulk >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x0200 1x 512 bytes >> bInterval 1 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x84 EP 4 IN >> bmAttributes 2 >> Transfer Type Bulk >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x0200 1x 512 bytes >> bInterval 0 >> Interface Descriptor: >> bLength 9 >> bDescriptorType 4 >> bInterfaceNumber 3 >> bAlternateSetting 1 >> bNumEndpoints 2 >> bInterfaceClass 255 Vendor Specific Class >> bInterfaceSubClass 3 >> bInterfaceProtocol 0 >> iInterface 0 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x03 EP 3 OUT >> bmAttributes 3 >> Transfer Type Interrupt >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x0200 1x 512 bytes >> bInterval 4 >> Endpoint Descriptor: >> bLength 7 >> bDescriptorType 5 >> bEndpointAddress 0x85 EP 5 IN >> bmAttributes 3 >> Transfer Type Interrupt >> Synch Type None >> Usage Type Data >> wMaxPacketSize 0x0200 1x 512 bytes >> bInterval 4 >> 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 >> can't get debug descriptor: Resource temporarily unavailable >> Device Status: 0x0001 >> Self Powered >> >> >> -- >> Keith A Milner >> > -- -- Keith A Milner