On Wed, Dec 3, 2014 at 6:06 PM, Felipe Balbi <balbi@xxxxxx> wrote: > 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 Thank you for the suggestions. Unfortunately, I'm not able to update the kernel because I'm working with some legacy code. I'm a relative newbie when it comes to developing/modifying USB drivers, but the following configuration seems to work with a Windows host for me: Device Descriptor: bcdUSB: 0x0200 bDeviceClass: 0x00 bDeviceSubClass: 0x00 bDeviceProtocol: 0x00 bMaxPacketSize0: 0x40 (64) idVendor: 0x1D6B idProduct: 0x0101 bcdDevice: 0x0316 iManufacturer: 0x01 0x0409: "Linux 3.2.0 with musb-hdrc" iProduct: 0x02 0x0409: "Linux USB Audio Gadget" iSerialNumber: 0x00 bNumConfigurations: 0x01 ConnectionStatus: DeviceConnected Current Config Value: 0x01 Device Bus Speed: High Device Address: 0x11 Open Pipes: 0 Configuration Descriptor: wTotalLength: 0x00E7 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) bInterfaceSubClass: 0x01 (Audio Control) bInterfaceProtocol: 0x00 iInterface: 0x00 Audio Control Interface Header Descriptor: bLength: 0x0A bDescriptorType: 0x24 bDescriptorSubtype: 0x01 bcdADC: 0x0100 wTotalLength: 0x0065 bInCollection: 0x02 baInterfaceNr[1]: 0x01 baInterfaceNr[2]: 0x02 Audio Control Input Terminal Descriptor: bLength: 0x0C bDescriptorType: 0x24 bDescriptorSubtype: 0x02 bTerminalID: 0x01 wTerminalType: 0x0201 (Microphone) bAssocTerminal: 0x00 bNrChannels: 0x02 wChannelConfig: 0x0003 iChannelNames: 0x00 iTerminal: 0x00 Audio Control Feature Unit Descriptor: bLength: 0x0A bDescriptorType: 0x24 bDescriptorSubtype: 0x06 bUnitID: 0x02 bSourceID: 0x01 bControlSize: 0x01 bmaControls[0]: 03 bmaControls[1]: 00 bmaControls[2]: 00 iFeature: 0x00 Audio Control Input Terminal Descriptor: bLength: 0x0C bDescriptorType: 0x24 bDescriptorSubtype: 0x02 bTerminalID: 0x03 wTerminalType: 0x0402 (Headset) bAssocTerminal: 0x09 bNrChannels: 0x02 wChannelConfig: 0x0003 iChannelNames: 0x00 iTerminal: 0x00 Audio Control Feature Unit Descriptor: bLength: 0x0A bDescriptorType: 0x24 bDescriptorSubtype: 0x06 bUnitID: 0x04 bSourceID: 0x03 bControlSize: 0x01 bmaControls[0]: 03 bmaControls[1]: 00 bmaControls[2]: 00 iFeature: 0x00 Audio Control Selector Unit Descriptor: bLength: 0x06 bDescriptorType: 0x24 bDescriptorSubtype: 0x05 bUnitID: 0x05 bNrInPins: 0x01 baSourceID[1]: 0x04 iSelector: 0x09 Audio Control Output Terminal Descriptor: bLength: 0x09 bDescriptorType: 0x24 bDescriptorSubtype: 0x03 bTerminalID: 0x06 wTerminalType: 0x0101 (USB streaming) bAssocTerminal: 0x00 bSoruceID: 0x05 iTerminal: 0x00 Audio Control Input Terminal Descriptor: bLength: 0x0C bDescriptorType: 0x24 bDescriptorSubtype: 0x02 bTerminalID: 0x07 wTerminalType: 0x0101 (USB streaming) bAssocTerminal: 0x00 bNrChannels: 0x02 wChannelConfig: 0x0003 iChannelNames: 0x00 iTerminal: 0x00 Audio Control Feature Unit Descriptor: bLength: 0x0A bDescriptorType: 0x24 bDescriptorSubtype: 0x06 bUnitID: 0x08 bSourceID: 0x0A bControlSize: 0x01 bmaControls[0]: 01 bmaControls[1]: 02 bmaControls[2]: 02 iFeature: 0x00 Audio Control Output Terminal Descriptor: bLength: 0x09 bDescriptorType: 0x24 bDescriptorSubtype: 0x03 bTerminalID: 0x09 wTerminalType: 0x0402 (Headset) bAssocTerminal: 0x03 bSoruceID: 0x08 iTerminal: 0x00 Audio Control Mixer Unit Descriptor: bLength: 0x0D bDescriptorType: 0x24 bDescriptorSubtype: 0x04 bUnitID: 0x0A bNrInPins: 0x02 baSourceID[1]: 0x07 baSourceID[2]: 0x02 bNrChannels: 0x02 wChannelConfig: 0x0003 iChannelNames: 0x00 bmControls: 00 iMixer: 0x00 Interface Descriptor: bInterfaceNumber: 0x01 bAlternateSetting: 0x00 bNumEndpoints: 0x00 bInterfaceClass: 0x01 (Audio) bInterfaceSubClass: 0x02 (Audio Streaming) bInterfaceProtocol: 0x00 iInterface: 0x00 Interface Descriptor: bInterfaceNumber: 0x01 bAlternateSetting: 0x01 bNumEndpoints: 0x01 bInterfaceClass: 0x01 (Audio) bInterfaceSubClass: 0x02 (Audio Streaming) bInterfaceProtocol: 0x00 iInterface: 0x00 Audio Streaming Class Specific Interface Descriptor: bLength: 0x07 bDescriptorType: 0x24 bDescriptorSubtype: 0x01 bTerminalLink: 0x06 bDelay: 0x01 wFormatTag: 0x0001 (PCM) Audio Streaming Format Type Descriptor: bLength: 0x0B bDescriptorType: 0x24 bDescriptorSubtype: 0x02 bFormatType: 0x01 bNrChannels: 0x02 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: 0x01 bLockDelayUnits: 0x00 wLockDelay: 0x0000 Interface Descriptor: bInterfaceNumber: 0x02 bAlternateSetting: 0x00 bNumEndpoints: 0x00 bInterfaceClass: 0x01 (Audio) bInterfaceSubClass: 0x02 (Audio Streaming) bInterfaceProtocol: 0x00 iInterface: 0x00 Interface Descriptor: bInterfaceNumber: 0x02 bAlternateSetting: 0x01 bNumEndpoints: 0x01 bInterfaceClass: 0x01 (Audio) bInterfaceSubClass: 0x02 (Audio Streaming) bInterfaceProtocol: 0x00 iInterface: 0x00 Audio Streaming Class Specific Interface Descriptor: bLength: 0x07 bDescriptorType: 0x24 bDescriptorSubtype: 0x01 bTerminalLink: 0x07 bDelay: 0x01 wFormatTag: 0x0001 (PCM) Audio Streaming Format Type Descriptor: bLength: 0x0B bDescriptorType: 0x24 bDescriptorSubtype: 0x02 bFormatType: 0x01 bNrChannels: 0x02 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: 0x01 bLockDelayUnits: 0x01 wLockDelay: 0x0004 The host recognizes my device as a headset. Regards, Priya -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
