Hi, (no top-posting, please) On Wed, Dec 03, 2014 at 05:24:22PM -0600, Priya S wrote: > Great! That fixes it. Thanks. > > Windows is not able to install the driver though. These are the USB > descriptors that I see from the host-side: > > Device Descriptor: > bcdUSB: 0x0200 > bDeviceClass: 0x00 this means that the class is defined at the interface level. > bDeviceSubClass: 0x00 > bDeviceProtocol: 0x00 > bMaxPacketSize0: 0x40 (64) > idVendor: 0x1D6B > idProduct: 0x0101 > bcdDevice: 0x0316 > iManufacturer: 0x01 > 0x0409: "Linux 3.2.0 with musb-hdrc" this is one old kernel. You really wanna ask for support from whoever gave you this kernel instead. Considering you're using MUSB and TI has an old 3.2-based SDK, if you got this from TI, get in touch with your FAE and/or use TI's support forum instead. The community cannot support you with such an old kernel. However, if you're willing to move your development to v3.18-rc7 (or at least v3.17.4) then I'll be happy to help you out. > iProduct: 0x02 > 0x0409: "Linux USB Audio Gadget" > iSerialNumber: 0x00 > bNumConfigurations: 0x01 > > ConnectionStatus: DeviceConnected > Current Config Value: 0x01 > Device Bus Speed: High > Device Address: 0x1B > Open Pipes: 0 > > Configuration Descriptor: > wTotalLength: 0x0095 > bNumInterfaces: 0x03 > bConfigurationValue: 0x01 > iConfiguration: 0x00 > bmAttributes: 0xC0 (Bus Powered Self Powered ) > MaxPower: 0x01 (2 Ma) > > Interface Descriptor: > bInterfaceNumber: 0x00 > bAlternateSetting: 0x00 > bNumEndpoints: 0x00 > bInterfaceClass: 0x01 (Audio) and here it is. The class is defined here. Does this work with Linux ? Windows is pretty stupid when it comes to binding drivers to USB devices. It just can't handle bDeviceClass set to "Defined at interface". > bInterfaceSubClass: 0x01 (Audio Control) > bInterfaceProtocol: 0x00 > iInterface: 0x00 > > Audio Control Interface Header Descriptor: > bLength: 0x0A > bDescriptorType: 0x24 > bDescriptorSubtype: 0x01 > bcdADC: 0x0100 > wTotalLength: 0x0028 > bInCollection: 0x02 > baInterfaceNr[1]: 0x01 > baInterfaceNr[2]: 0x02 > > Audio Control Input Terminal Descriptor: > bLength: 0x0C > bDescriptorType: 0x24 > bDescriptorSubtype: 0x02 > bTerminalID: 0x02 > wTerminalType: 0x0201 (Microphone) > bAssocTerminal: 0x00 > bNrChannels: 0x02 > wChannelConfig: 0x0003 > iChannelNames: 0x00 > iTerminal: 0x07 > > Audio Control Output Terminal Descriptor: > bLength: 0x09 > bDescriptorType: 0x24 > bDescriptorSubtype: 0x03 > bTerminalID: 0x01 > wTerminalType: 0x0301 (Speaker) > bAssocTerminal: 0x03 > bSoruceID: 0x03 > iTerminal: 0x09 > > Interface Descriptor: > bInterfaceNumber: 0x01 > bAlternateSetting: 0x00 > bNumEndpoints: 0x00 > bInterfaceClass: 0x01 (Audio) > bInterfaceSubClass: 0x02 (Audio Streaming) > bInterfaceProtocol: 0x00 > iInterface: 0x0B > 0x0409: "Playback Inactive" > > Interface Descriptor: > bInterfaceNumber: 0x01 > bAlternateSetting: 0x01 > bNumEndpoints: 0x01 > bInterfaceClass: 0x01 (Audio) > bInterfaceSubClass: 0x02 (Audio Streaming) > bInterfaceProtocol: 0x00 > iInterface: 0x0C > 0x0409: "Playback Active" > > Audio Streaming Class Specific Interface Descriptor: > bLength: 0x07 > bDescriptorType: 0x24 > bDescriptorSubtype: 0x01 > bTerminalLink: 0x01 > bDelay: 0x01 > wFormatTag: 0x0001 (PCM) > > Audio Streaming Format Type Descriptor: > bLength: 0x0B > bDescriptorType: 0x24 > bDescriptorSubtype: 0x02 > bFormatType: 0x01 > bNrChannels: 0x00 > bSubframeSize: 0x02 > bBitResolution: 0x10 > bSamFreqType: 0x01 > tSamFreq[1]: 0x00BB80 (48000 Hz) > > Endpoint Descriptor: > bEndpointAddress: 0x01 OUT > Transfer Type: Isochronous > wMaxPacketSize: 0x00C8 (200) > bInterval: 0x04 > > Audio Streaming Class Specific Audio Data Endpoint Descriptor: > bLength: 0x07 > bDescriptorType: 0x25 > bDescriptorSubtype: 0x01 > bmAttributes: 0x00 > bLockDelayUnits: 0x00 > wLockDelay: 0x0000 > > Interface Descriptor: > bInterfaceNumber: 0x02 > bAlternateSetting: 0x00 > bNumEndpoints: 0x00 > bInterfaceClass: 0x01 (Audio) > bInterfaceSubClass: 0x02 (Audio Streaming) > bInterfaceProtocol: 0x00 > iInterface: 0x0D > 0x0409: "Capture Inactive" > > Interface Descriptor: > bInterfaceNumber: 0x02 > bAlternateSetting: 0x01 > bNumEndpoints: 0x01 > bInterfaceClass: 0x01 (Audio) > bInterfaceSubClass: 0x02 (Audio Streaming) > bInterfaceProtocol: 0x00 > iInterface: 0x0E > 0x0409: "Capture Active" > > Audio Streaming Class Specific Interface Descriptor: > bLength: 0x07 > bDescriptorType: 0x24 > bDescriptorSubtype: 0x01 > bTerminalLink: 0x02 > bDelay: 0x01 > wFormatTag: 0x0001 (PCM) > > Audio Streaming Format Type Descriptor: > bLength: 0x0B > bDescriptorType: 0x24 > bDescriptorSubtype: 0x02 > bFormatType: 0x01 > bNrChannels: 0x00 > bSubframeSize: 0x02 > bBitResolution: 0x10 > bSamFreqType: 0x01 > tSamFreq[1]: 0x00BB80 (48000 Hz) > > Endpoint Descriptor: > bEndpointAddress: 0x81 IN > Transfer Type: Isochronous > wMaxPacketSize: 0x00C8 (200) > bInterval: 0x04 > > Audio Streaming Class Specific Audio Data Endpoint Descriptor: > bLength: 0x07 > bDescriptorType: 0x25 > bDescriptorSubtype: 0x01 > bmAttributes: 0x00 > bLockDelayUnits: 0x00 > wLockDelay: 0x0000 > > What could I possibly be missing? this could be just a windows brain-fart. Perhaps google around or ask for support from whoever gave you a 3.2 kernel ? cheers -- balbi
Attachment:
signature.asc
Description: Digital signature
