All, the Mirconas UAC355x audio chips don't currently work with my driver (haven't tried alsa), because it announces both playback and capture being adaptive, while only playback is really adaptive, capture is asynchronous. So we need a quirk to handle this.
How do we handle this best? In the driver? In the core (patch the in core descriptor while reading it in)? Tom > Bus 001 Device 004: ID 074d:3556 Micronas GmbH > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 0 Interface > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 8 > idVendor 0x074d Micronas GmbH > idProduct 0x3556 > bcdDevice 0.05 > iManufacturer 1 Micronas > iProduct 2 UAC3556B > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 416 > bNumInterfaces 4 > bConfigurationValue 1 > iConfiguration 3 > bmAttributes 0xe0 > Self Powered > Remote Wakeup > MaxPower 0mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 1 Audio > bInterfaceSubClass 1 Control Device > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 10 > bDescriptorType 36 > bDescriptorSubtype 1 (HEADER) > bcdADC 1.00 > wTotalLength 125 > bInCollection 2 > baInterfaceNr( 0) 1 > baInterfaceNr( 1) 2 > AudioControl Interface Descriptor: > bLength 12 > bDescriptorType 36 > bDescriptorSubtype 2 (INPUT_TERMINAL) > bTerminalID 10 > wTerminalType 0x0201 Microphone > bAssocTerminal 0 > bNrChannels 2 > wChannelConfig 0x0003 > Left Front (L) > Right Front (R) > iChannelNames 0 > iTerminal 0 > AudioControl Interface Descriptor: > bLength 12 > bDescriptorType 36 > bDescriptorSubtype 2 (INPUT_TERMINAL) > bTerminalID 11 > wTerminalType 0x0603 Line Connector > bAssocTerminal 0 > bNrChannels 2 > wChannelConfig 0x0003 > Left Front (L) > Right Front (R) > iChannelNames 0 > iTerminal 0 > AudioControl Interface Descriptor: > bLength 12 > bDescriptorType 36 > bDescriptorSubtype 2 (INPUT_TERMINAL) > bTerminalID 12 > wTerminalType 0x0101 USB Streaming > bAssocTerminal 0 > bNrChannels 2 > wChannelConfig 0x0003 > Left Front (L) > Right Front (R) > iChannelNames 0 > iTerminal 0 > AudioControl Interface Descriptor: > bLength 13 > bDescriptorType 36 > bDescriptorSubtype 6 (FEATURE_UNIT) > bUnitID 2 > bSourceID 10 > bControlSize 2 > bmaControls( 0) 0x02 > bmaControls( 1) 0x00 > Volume > bmaControls( 0) 0x00 > bmaControls( 1) 0x00 > bmaControls( 0) 0x00 > bmaControls( 1) 0x00 > iFeature 0 > AudioControl Interface Descriptor: > bLength 13 > bDescriptorType 36 > bDescriptorSubtype 6 (FEATURE_UNIT) > bUnitID 3 > bSourceID 11 > bControlSize 2 > bmaControls( 0) 0x02 > bmaControls( 1) 0x00 > Volume > bmaControls( 0) 0x00 > bmaControls( 1) 0x00 > bmaControls( 0) 0x00 > bmaControls( 1) 0x00 > iFeature 0 > AudioControl Interface Descriptor: > bLength 13 > bDescriptorType 36 > bDescriptorSubtype 6 (FEATURE_UNIT) > bUnitID 1 > bSourceID 12 > bControlSize 2 > bmaControls( 0) 0x55 > bmaControls( 1) 0x01 > Mute > Bass > Treble > Automatic Gain > Bass Boost > bmaControls( 0) 0x02 > bmaControls( 1) 0x00 > Volume > bmaControls( 0) 0x02 > bmaControls( 1) 0x00 > Volume > iFeature 0 > AudioControl Interface Descriptor: > bLength 9 > bDescriptorType 36 > bDescriptorSubtype 3 (OUTPUT_TERMINAL) > bTerminalID 20 > wTerminalType 0x0301 Speaker > bAssocTerminal 0 > bSourceID 1 > iTerminal 0 > AudioControl Interface Descriptor: > bLength 9 > bDescriptorType 36 > bDescriptorSubtype 5 (SELECTOR_UNIT) > bUnitID 8 > bNrInPins 3 > baSource( 0) 1 > baSource( 1) 2 > baSource( 2) 3 > iSelector 0 > AudioControl Interface Descriptor: > bLength 13 > bDescriptorType 36 > bDescriptorSubtype 6 (FEATURE_UNIT) > bUnitID 6 > bSourceID 8 > bControlSize 2 > bmaControls( 0) 0x03 > bmaControls( 1) 0x00 > Mute > Volume > bmaControls( 0) 0x00 > bmaControls( 1) 0x00 > bmaControls( 0) 0x00 > bmaControls( 1) 0x00 > iFeature 0 > AudioControl Interface Descriptor: > bLength 9 > bDescriptorType 36 > bDescriptorSubtype 3 (OUTPUT_TERMINAL) > bTerminalID 13 > wTerminalType 0x0101 USB Streaming > bAssocTerminal 0 > bSourceID 6 > iTerminal 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 1 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 12 > bDelay 0 frames > wFormatTag 1 PCM > AudioControl Interface Descriptor: > bLength 14 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 0 Continuous > tLowerSamFreq 6400 > tUpperSamFreq 48000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x01 EP 1 OUT > bmAttributes 9 > Transfer Type Isochronous > Synch Type Adaptive > wMaxPacketSize 100 > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x01 > Sampling Frequency > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 1 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 2 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 12 > bDelay 0 frames > wFormatTag 1 PCM > AudioControl Interface Descriptor: > bLength 14 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 2 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 0 Continuous > tLowerSamFreq 6400 > tUpperSamFreq 48000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x01 EP 1 OUT > bmAttributes 9 > Transfer Type Isochronous > Synch Type Adaptive > wMaxPacketSize 200 > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x01 > Sampling Frequency > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 1 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 1 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 13 > bDelay 0 frames > wFormatTag 1 PCM > AudioControl Interface Descriptor: > bLength 14 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 1 > bBitResolution 8 > bSamFreqType 0 Continuous > tLowerSamFreq 6400 > tUpperSamFreq 48000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 9 > Transfer Type Isochronous > Synch Type Adaptive > wMaxPacketSize 50 > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x01 > Sampling Frequency > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 1 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 2 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 13 > bDelay 0 frames > wFormatTag 1 PCM > AudioControl Interface Descriptor: > bLength 14 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 1 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 0 Continuous > tLowerSamFreq 6400 > tUpperSamFreq 48000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 9 > Transfer Type Isochronous > Synch Type Adaptive > wMaxPacketSize 100 > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x01 > Sampling Frequency > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 1 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 3 > bNumEndpoints 1 > bInterfaceClass 1 Audio > bInterfaceSubClass 2 Streaming > bInterfaceProtocol 0 > iInterface 0 > AudioControl Interface Descriptor: > bLength 7 > bDescriptorType 36 > bDescriptorSubtype 1 (AS_GENERAL) > bTerminalLink 13 > bDelay 0 frames > wFormatTag 1 PCM > AudioControl Interface Descriptor: > bLength 14 > bDescriptorType 36 > bDescriptorSubtype 2 (FORMAT_TYPE) > bFormatType 1 (FORMAT_TYPE_I) > bNrChannels 2 > bSubframeSize 2 > bBitResolution 16 > bSamFreqType 0 Continuous > tLowerSamFreq 6400 > tUpperSamFreq 48000 > Endpoint Descriptor: > bLength 9 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 9 > Transfer Type Isochronous > Synch Type Adaptive > wMaxPacketSize 200 > bInterval 1 > bRefresh 0 > bSynchAddress 0 > AudioControl Endpoint Descriptor: > bLength 7 > bDescriptorType 37 > bDescriptorSubtype 1 (EP_GENERAL) > bmAttributes 0x01 > Sampling Frequency > bLockDelayUnits 2 Decoded PCM samples > wLockDelay 1 Decoded PCM samples > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 3 > bAlternateSetting 0 > bNumEndpoints 1 > bInterfaceClass 3 Human Interface Devices > bInterfaceSubClass 0 No Subclass > bInterfaceProtocol 0 None > iInterface 0 > HID Device Descriptor: > bLength 9 > bDescriptorType 33 > bcdHID 1.00 > bCountryCode 0 > bNumDescriptors 1 > bDescriptorType 34 Report > wDescriptorLength 39 > cannot get report descriptor > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 3 > Transfer Type Interrupt > Synch Type none > wMaxPacketSize 2 > bInterval 8 > Language IDs: (length=4) > 0409 English(US) > ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. 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