Re: [PATCH v5 1/2] Input: gpio_keys.c: Added support for device-tree platform data
From: David Jander <hidden>
Date: 2011-06-23 14:09:24
On Thu, 23 Jun 2011 07:25:37 -0600 Grant Likely [off-list ref] wrote:
On Thu, Jun 23, 2011 at 6:39 AM, Alan Cox [off-list ref] wrote:quoted
quoted
quoted
+ - gpios: OF devcie-tree gpio specificatin. + - label: Descriptive name of the key. + - linux,code: Keycode to emit.The fact that this is the Linux internal keycode definitions still makes me nervous. Is there no existing standard for keycodes emitted by keyboard devices?There is but no standard lookup table. For Intel MID we do a translation between Linux key names in the firmware and keycodes but there isn't a generic helper for it.I suppose the Linux keycodes are exported out to userspace, and are therefore an ABI which will not change. Okay.
Right. If I am not mistaken, it started out being AT keyboard scancodes one day, but nowadays it is a huge (and very useful) list of all possible keyboard-like input events that can exist in linux. We use one such handy niche-code: CYCLE_WINDOWS. We couldn't use this code if we were forced to emulate some existing keyboard which probably wouldn't have this nifty key. It just fits perfectly the intended function of the key. I have openbox configured to handle it more or less like ALT+TAB. Best regards, -- David Jander Protonic Holland. -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html