On Mon, 30 Dec 2019, Pavel Balan wrote: > I am currently in the process of writing a driver for a laptop backlight > peripheral. It takes a HID feature request to activate - and according to the > way it works in Windows (thanks to pre-installed software packages), the > driver activates it on receiving a hot-key combination. > > Is there a paved, proper way to implement that functionality - provided the > built-in keyboard and the backlight are two separate devices? Hi Pavel, just to make sure I understand your question correctly -- you would like to know how to cleanly implement this scenario: once some special hotkey is pressed (is that a HID device? What usage / code mapping does the hotkey press produce?), create a HID report and send it to the device. Correct? It really depends whether that hotkey is something standard, or something vendor-specific. Thanks, -- Jiri Kosina SUSE Labs
