On Tue, Sep 15, 2009 at 10:41:30PM +0530, Trilok Soni wrote: > Adding linux-input. > > On Tue, Sep 15, 2009 at 9:49 PM, Rick L. Vinyard, Jr. > <rvinyard@xxxxxxxxxxx> wrote: > > On the Logitech G13 there are a set of 10 special keys at the top of the > > device. > > > > I've written the driver so that it maintains a map from the general keys > > (G1-G22) to Linux' input subsystem keys. > > > > The map can be changed on the fly, allowing multiple keymaps to be loaded. > > > > As a side note I haven't provided for this functionality (multiple > > keymaps) in the driver since this can be maintained from userspace, but it > > does need to know about the currently loaded keymap so that when the raw > > HID events are parsed the appropriate EV_KEY events can be input. > > > > I could set it up so that the special keys also map to a KEY_* code. > > However, I'd prefer to set things up so that any G1-G22 key can be mapped > > to any input subsystem KEY_* code and not reserve a set of 10 from the > > current KEY_* codes for the 10 special keys. > > > > One way I was thinking of approaching this was to generate EV_MSC type > > events (with a MSC_RAW code) using the value to indicate the state > > (pressed/released) and special key. Doesn't HID already generate EV_MSC/MSC_SCAN for exactly this purpose so userspace knows what keys can be remapped? You may initially map all keys you don't know the usage to KEY_UNKNOWN. > > > > Another way to approach this would be to extend the KEY_* #defines with a > > special set of 10 codes for the 10 special keys. > > No, please don't do this. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
