From: Dmitry Torokhov Date: Thu, 6 Apr 2017 23:17:37 +0000 (-0700) Subject: Input: docs - update joystick documentation a bit X-Git-Tag: v4.12-rc1~109^2^2~15 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=4c79e98be5a9c0bf8fce183cfbe63624514502ef;p=linux.git Input: docs - update joystick documentation a bit Consolidate use instructions and userspace API notes into the same chapter; remove completely obsolete references, move into a separate subdirectory. Signed-off-by: Dmitry Torokhov --- diff --git a/Documentation/input/index.rst b/Documentation/input/index.rst index 5887c79173b8..b25a67198a65 100644 --- a/Documentation/input/index.rst +++ b/Documentation/input/index.rst @@ -2,8 +2,7 @@ The Linux Input Documentation ============================= -Core API -======== +Contents: .. toctree:: :maxdepth: 2 @@ -12,8 +11,7 @@ Core API input input-programming event-codes - joystick - joystick-api + joydev/index multi-touch-protocol gamepad gameport-programming diff --git a/Documentation/input/joydev/index.rst b/Documentation/input/joydev/index.rst new file mode 100644 index 000000000000..8d9666c7561c --- /dev/null +++ b/Documentation/input/joydev/index.rst @@ -0,0 +1,18 @@ +.. include:: + +====================== +Linux Joystick support +====================== + +:Copyright: |copy| 1996-2000 Vojtech Pavlik - Sponsored by SuSE + +.. class:: toc-title + + Table of Contents + +.. toctree:: + :maxdepth: 3 + :numbered: + + joystick + joystick-api diff --git a/Documentation/input/joystick-api.rst b/Documentation/input/joydev/joystick-api.rst similarity index 89% rename from Documentation/input/joystick-api.rst rename to Documentation/input/joydev/joystick-api.rst index 9b9d26833086..42edcfc6e8af 100644 --- a/Documentation/input/joystick-api.rst +++ b/Documentation/input/joydev/joystick-api.rst @@ -1,16 +1,36 @@ -========================== -Joystick API Documentation -========================== +===================== +Programming Interface +===================== :Author: Ragnar Hojland Espinosa - 7 Aug 1998 +Introduction +============ + +.. important:: + This document describes legacy ``js`` interface. Newer clients are + encouraged to switch to the generic event (``evdev``) interface. + +The 1.0 driver uses a new, event based approach to the joystick driver. +Instead of the user program polling for the joystick values, the joystick +driver now reports only any changes of its state. See joystick-api.txt, +joystick.h and jstest.c included in the joystick package for more +information. The joystick device can be used in either blocking or +nonblocking mode, and supports select() calls. + +For backward compatibility the old (v0.x) interface is still included. +Any call to the joystick driver using the old interface will return values +that are compatible to the old interface. This interface is still limited +to 2 axes, and applications using it usually decode only 2 buttons, although +the driver provides up to 32. + Initialization ============== Open the joystick device following the usual semantics (that is, with open). Since the driver now reports events instead of polling for changes, immediately after the open it will issue a series of synthetic events -(JS_EVENT_INIT) that you can read to check the initial state of the +(JS_EVENT_INIT) that you can read to obtain the initial state of the joystick. By default, the device is opened in blocking mode:: @@ -182,7 +202,7 @@ the actual state of the joystick. .. note:: - As for version 1.2.8, the queue is circular and able to hold 64 + As of version 1.2.8, the queue is circular and able to hold 64 events. You can increment this size bumping up JS_BUFF_SIZE in joystick.h and recompiling the driver. diff --git a/Documentation/input/joystick.rst b/Documentation/input/joydev/joystick.rst similarity index 86% rename from Documentation/input/joystick.rst rename to Documentation/input/joydev/joystick.rst index c9c175ffc2ff..b90705eb69b1 100644 --- a/Documentation/input/joystick.rst +++ b/Documentation/input/joydev/joystick.rst @@ -1,56 +1,17 @@ .. include:: -============================ -Linux Joystick driver v2.0.0 -============================ - -:Copyright: |copy| 1996-2000 Vojtech Pavlik - Sponsored by SuSE - - -Disclaimer -========== - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2 of the License, or (at your option) -any later version. - -This program is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along -with this program; if not, write to the Free Software Foundation, Inc., 59 -Temple Place, Suite 330, Boston, MA 02111-1307 USA - -Should you need to contact me, the author, you can do so either by e-mail -- mail your message to , or by paper mail: Vojtech Pavlik, -Simunkova 1594, Prague 8, 182 00 Czech Republic - -For your convenience, the GNU General Public License version 2 is included -in the package: See the file COPYING. - -Intro -===== +Introduction +============ The joystick driver for Linux provides support for a variety of joysticks and similar devices. It is based on a larger project aiming to support all input devices in Linux. -Should you encounter any problems while using the driver, or joysticks -this driver can't make complete use of, I'm very interested in hearing about -them. Bug reports and success stories are also welcome. - -The input project website is at: - - http://atrey.karlin.mff.cuni.cz/~vojtech/input/ - -There is also a mailing list for the driver at: +The mailing list for the project is: - listproc@atrey.karlin.mff.cuni.cz + linux-input@vger.kernel.org -send "subscribe linux-joystick Your Name" to subscribe to it. +send "subscribe linux-input" to majordomo@vger.kernel.org to subscribe to it. Usage ===== @@ -58,18 +19,22 @@ Usage For basic usage you just choose the right options in kernel config and you should be set. -inpututils ----------- +Utilities +--------- -For testing and other purposes (for example serial devices), a set of -utilities is available at the abovementioned website. I suggest you download -and install it before going on. +For testing and other purposes (for example serial devices), there is a set +of utilities, such as ``jstest``, ``jscal``, and ``evtest``, +usually packaged as ``joystick``, ``input-utils``, ``evtest``, and so on. + +``inputattach`` utility is required if your joystick is connected to a +serial port. Device nodes ------------ -For applications to be able to use the joysticks, -you'll have to manually create these nodes in /dev:: +For applications to be able to use the joysticks, device nodes should be +created in /dev. Normally it is done automatically by the system, but +it can also be done by hand:: cd /dev rm js* @@ -166,7 +131,6 @@ And add a line to your rc script executing that file:: This way, after the next reboot your joystick will remain calibrated. You can also add the ``jscal -p`` line to your shutdown script. - HW specific driver information ============================== @@ -467,6 +431,10 @@ future if I get an Amiga in the reach of my fingers. Game console and 8-bit pads and joysticks ----------------------------------------- +These pads and joysticks are not designed for PCs and other computers +Linux runs on, and usually require a special connector for attaching +them through a parallel port. + See :ref:`joystick-parport` for more info. SpaceTec/LabTec devices @@ -613,19 +581,3 @@ FAQ :Q: My joystick doesn't work with Quake / Quake 2. What's the cause? :A: Quake / Quake 2 don't support joystick. Use joy2key to simulate keypresses for them. - -Programming Interface -===================== - -The 1.0 driver uses a new, event based approach to the joystick driver. -Instead of the user program polling for the joystick values, the joystick -driver now reports only any changes of its state. See joystick-api.txt, -joystick.h and jstest.c included in the joystick package for more -information. The joystick device can be used in either blocking or -nonblocking mode and supports select() calls. - -For backward compatibility the old (v0.x) interface is still included. -Any call to the joystick driver using the old interface will return values -that are compatible to the old interface. This interface is still limited -to 2 axes, and applications using it usually decode only 2 buttons, although -the driver provides up to 32. diff --git a/Documentation/input/joystick-parport.rst b/Documentation/input/joystick-parport.rst index fa8cab584793..cc2ab871e701 100644 --- a/Documentation/input/joystick-parport.rst +++ b/Documentation/input/joystick-parport.rst @@ -2,9 +2,9 @@ .. _joystick-parport: -=================================== -Linux Joystick parport drivers v2.0 -=================================== +============================== +Parallel port Joystick Drivers +============================== :Copyright: |copy| 1998-2000 Vojtech Pavlik :Copyright: |copy| 1998 Andree Borrmann @@ -20,8 +20,8 @@ it will be true. So, use it at your own risk. The possible damages that can happen include burning your parallel port, and/or the sticks and joystick and maybe even more. Like when a lightning kills you it is not our problem. -Intro -===== +Introduction +============ The joystick parport drivers are used for joysticks and gamepads not originally designed for PCs and other computers Linux runs on. Because of @@ -582,7 +582,7 @@ use turbografx.map2 and turbografx.map3 as additional command line parameters for two more interfaces. PC parallel port pinout ------------------------ +======================= ::