From: David Herrmann Date: Mon, 26 Aug 2013 17:14:46 +0000 (+0200) Subject: Input: introduce BTN/ABS bits for drums and guitars X-Git-Tag: v3.12-rc1~125^2~1^8~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61e00655e9cb82e034eb72b95a51072e718d14a7;p=pandora-kernel.git Input: introduce BTN/ABS bits for drums and guitars There are a bunch of guitar and drums devices out there that all report similar data. To avoid reporting this as BTN_MISC or ABS_MISC, we allocate some proper namespace for them. Note that most of these devices are toys and we cannot report any sophisticated physics via this API. I did some google-images research and tried to provide definitions that work with all common devices. That's why I went with 4 toms, 4 cymbals, one bass, one hi-hat. I haven't seen other drums and I doubt that we need any additions to that. Anyway, the naming-scheme is intentionally done in an extensible way. For guitars, we support 5 frets (normally aligned vertically, compared to the real horizontal layouts), a single strum-bar with up/down directions, an optional fret-board and a whammy-bar. Most of the devices provide pressure values so I went with ABS_* bits. If we ever support devices which only provide digital input, we have to decide whether to emulate pressure data or add additional BTN_* bits. If someone is not familiar with these devices, here are two pictures which provide almost all introduced interfaces (or try the given keywords with a google-image search): Guitar: ("guitar hero world tour guitar") http://images1.wikia.nocookie.net/__cb20120911023442/applezone/es/images/f/f9/Wii_Guitar.jpg Drums: ("guitar hero drums") http://oyster.ignimgs.com/franchises/images/03/55/35526_band-hero-drum-set-hands-on-20090929040735768.jpg Signed-off-by: David Herrmann Acked-by: Dmitry Torokhov Signed-off-by: Jiri Kosina --- Reading git-diff-tree failed