hi all:
I get the same message on kernel 3.16.0 and attach the device
information as well.
(from the description, the ep 0x82 did have different sample rate
configuration, but why uac cannot get it?)
appreciate your help,
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bDelay 1 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 29
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 1
bSubframeSize 2
bBitResolution 16
bSamFreqType 7 Discrete
tSamFreq[ 0] 8000
tSamFreq[ 1] 16000
tSamFreq[ 2] 22050
tSamFreq[ 3] 24000
tSamFreq[ 4] 32000
tSamFreq[ 5] 44100
tSamFreq[ 6] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0100 1x 256 bytes
bInterval 4
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
2014-09-12 13:46 GMT+08:00 vichy <vichy.kuo@xxxxxxxxx>:
> hi all:
> My kernel is 3.8.0.
> and when I plug in "microsoft LifeCam", I get message at the end of
> mail about cannot get min/max values from camera.
> is there any usb audio class initial sequence we need to check when
> this message pop out?
> Appreciate your help in advance,
>
>
>
> usb 3-1: new high-speed USB device number 2 using Platform-ehci
> Platform-ehci Platform-ehci.0: port 1 reset complete, port enabled
> Platform-ehci Platform-ehci.0: GetStatus port:1 status 00000d 0 ACK
> sig=se0 PEC PE CONNECT
> usb 3-1: skipped 1 descriptor after configuration
> usb 3-1: skipped 6 descriptors after interface
> usb 3-1: skipped 1 descriptor after endpoint
> usb 3-1: skipped 28 descriptors after interface
> usb 3-1: skipped 1 descriptor after endpoint
> usb 3-1: skipped 4 descriptors after interface
> usb 3-1: skipped 2 descriptors after interface
> usb 3-1: skipped 1 descriptor after endpoint
> usb 3-1: default language 0x0409
> usb 3-1: udev 2, busnum 3, minor = 257
> usb 3-1: New USB device found, idVendor=045e, idProduct=075d
> usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> usb 3-1: Product: Microsoft® LifeCam Cinema(TM)
> usb 3-1: Manufacturer: Microsoft
> usb 3-1: usb_probe_device
> usb 3-1: configuration #1 chosen from 1 choice
> usb 3-1: adding 3-1:1.0 (config #1, interface 0)
> uvcvideo 3-1:1.0: usb_probe_interface
> uvcvideo 3-1:1.0: usb_probe_interface - got id
> uvcvideo: Found UVC 1.00 device Microsoft® LifeCam Cinema(TM) (045e:075d)
> input: Microsoft® LifeCam Cinema(TM) as
> /devices/platform/Platform-ehci.0/usb3/3-1/3-1:1.0/input/input4
> usb 3-1: adding 3-1:1.1 (config #1, interface 1)
> usb 3-1: adding 3-1:1.2 (config #1, interface 2)
> snd-usb-audio 3-1:1.2: usb_probe_interface
> snd-usb-audio 3-1:1.2: usb_probe_interface - got id
> ALSA sound/usb/stream.c:682 2:3:1: add audio endpoint 0x82
> usb 3-1: khubd timed out on ep0in len=0/3
> ALSA sound/usb/clock.c:237 2:3:1: cannot get freq at ep 0x82
> ALSA sound/usb/mixer.c:1305 [5] FU [Mic Capture Switch] ch = 1, val = 0/1/1
> ALSA sound/usb/mixer.c:929 5:2: cannot get min/max values for control 2 (id 5)
> ALSA sound/usb/mixer.c:1305 [5] FU [Mic Capture Volume] ch = 1, val = 0/1/1
> ALSA sound/usb/mixer.c:929 5:2: cannot get min/max values for control 2 (id 5)
> usb 3-1: adding 3-1:1.3 (config #1, interface 3)
> hub 3-0:1.0: state 7 ports 1 chg 0000 evt 0002
> Platform-ehci Platform-ehci.0: GetStatus port:1 status 00000d 0 ACK
> sig=se0 PEC PE CONNECT
> hub 3-0:1.0: port 1 enable change, status 00000403
Attachment:
microsoft.cam.tar.bz
Description: application/bzip
