Hi Nicolas On Wed, Mar 28, 2012 at 1:15 PM, Nicolas Pouillon <npouillon@xxxxxxxxxx> wrote: > David, > > ----- Original Message ----- > >> >> + strncpy(hid->name, ev->u.create.name, 128); >> >> + hid->name[127] = 0; >> >> + hid->ll_driver = &uhid_hid_driver; >> >> + hid->hid_get_raw_report = uhid_hid_get_raw; >> >> + hid->hid_output_raw_report = uhid_hid_output_raw; >> >> + hid->bus = ev->u.create.bus; >> >> + hid->vendor = ev->u.create.vendor; >> >> + hid->product = ev->u.create.product; >> >> + hid->version = ev->u.create.version; >> >> + hid->country = ev->u.create.country; >> >> + hid->phys[0] = 0; >> >> + hid->uniq[0] = 0; >> >> + hid->driver_data = uhid; >> >> + hid->dev.parent = uhid->parent; >> > >> > Here we have to make sure that we have all required information provided >> > by userspace. Anything else that HID might require to work better. Or >> > that BR/EDR or LE provides additionally over USB. >> >> Beside phys and uniq I have copied all information that HIDP and >> USBHID use. I haven't found any other field that could be of interest >> here. We can also always add UHID_CREATE2 with additional fields to >> allow further additions (or use a "size" field as you suggested >> below). > > HID report descriptor may reference Physical Descriptor (HID 6.2.3) and > String Descriptor entries (USB 9.6.8, HID E.11). Physical Descriptor > blob could be another __user buffer + size in uhid_create_req. String > descriptor should probably be an event for querying strings. I haven't seen that hid-core uses them? I pass the report-descriptor to hid_parse_report() and I don't see a way to pass in the phys-desc or string-descriptors. Neither USBHID nor HIDP uses them or am I missing something here? Anyway, we can always add them with a UHID_CREATE_EXT or similar command later if hid-core adds support for them. > hidraw interface also offers access to Feature Reports, adding events > to send/receive and query (kernel querying uhid client) feature reports > could be of some interest. Yeah, I haven't implemented this (yet) and I return -EOPNOTSUPP. However, it's on my TODO list. Thanks! > Cheers, > -- > Nicolas Pouillon Thanks David -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
