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    Subject[PATCH v3 0/1] HID: Report Descriptor in Sysfs
    Date
    This is version 3 of the patch, with binary data in the sysfs file instead
    of ASCII, as suggested by Alan Stern and Greg KH. Also now with
    documentation.

    Original Description:

    So I'd like to have access to the HID report descriptor in a sysfs entry, so
    I can read it without opening the device. hid-core seemed like the place to
    put it.

    Using the /sys/class links, for hidraw devices, this puts a new file,
    report_descriptor in the directory:
    /sys/class/hidraw/hidraw0/device/

    For my USB device (for example), the new file is in:
    /sys/bus/usb/devices/1-5.3:1.0/0003:046D:C216.0001/

    For my Bluetooth device, the new file is in:
    /sys/class/bluetooth/hci0/hci0:11/0005:054C:0268.0002/

    I'm not super confident that these file locations are the best place, but I
    made a best guess so that it could be discussed. The current location is
    where the hid-core stuff lives. Is there a reason these directories are
    named bus:vendor:product:id (instead of hid-core or something similar)? Is
    there a better way to do this?

    Alan.

    Alan Ott (1):
    hid: Add HID Report Descriptor to sysfs.

    Documentation/ABI/testing/sysfs-driver-hid | 10 ++++++++
    drivers/hid/hid-core.c | 33 ++++++++++++++++++++++++++++
    2 files changed, 43 insertions(+), 0 deletions(-)
    create mode 100644 Documentation/ABI/testing/sysfs-driver-hid




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