Re: [PATCH v5 1/2] Input: gpio_keys.c: Added support for device-tree platform data
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2011-06-23 18:01:38
On Thu, Jun 23, 2011 at 07:25:37AM -0600, Grant Likely 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, keycodes form ABI that will not change. Another option would be to use codes from HID usage tables but then they would have to be translated to Linux ones. -- Dmitry -- 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