which handlers should bind to a device
From: Oliver Neukum <hidden>
Date: 2011-03-11 15:24:39
Hi,
I have a set of USB speakers which also implement HID:
bDescriptorType 34 Report
wDescriptorLength 59
Report Descriptor: (length is 59)
Item(Global): Usage Page, data= [ 0x0c ] 12
Consumer
Item(Local ): Usage, data= [ 0x01 ] 1
Consumer Control
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Usage Page, data= [ 0x0c ] 12
Consumer
Item(Local ): Usage, data= [ 0xe9 ] 233
Volume Increment
Item(Global): Usage Page, data= [ 0x0c ] 12
Consumer
Item(Local ): Usage, data= [ 0xea ] 234
Volume Decrement
Item(Global): Usage Page, data= [ 0x0c ] 12
Consumer
Item(Local ): Usage, data= [ 0xe2 ] 226
Mute
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x03 ] 3
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Main ): Input, data= [ 0x42 ] 66
Data Variable Absolute No_Wrap Linear
Preferred_State Null_State Non_Volatile Bitfield
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x05 ] 5
Item(Main ): Input, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x0c ] 12
Consumer
Item(Local ): Usage, data= [ 0x00 ] 0
Unassigned
Item(Global): Usage Page, data= [ 0x0c ] 12
Consumer
Item(Local ): Usage, data= [ 0x00 ] 0
Unassigned
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Main ): Output, data= [ 0x06 ] 6
Data Variable Relative No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x06 ] 6
Item(Main ): Output, data= [ 0x03 ] 3
Constant Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
According to the Usage Page the device is not a keyboard, yet the keyboard handler
binds. Is this really sensible?
I: Bus=0003 Vendor=0471 Product=0104 Version=0100
N: Name="Philips Electronics Philips USB Digital Speaker System"
P: Phys=usb-0000:00:1d.0-1/input2
S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb6/6-1/6-1:1.2/input/input15
U: Uniq=
H: Handlers=kbd event11
B: PROP=0
B: EV=13
B: KEY=e000000000000 0
B: MSC=10
Regards
Oliver